avr32: upgrade to 2.6.25.6

SVN-Revision: 11450

4 files changed, 39979 insertions, 10876 deletions

diff --git a/target/linux/avr32/Makefile b/target/linux/avr32/Makefile
index 5a081f124d..96c5a104b2 100644
--- a/target/linux/avr32/Makefile
+++ b/target/linux/avr32/Makefile
@@ -10,7 +10,7 @@ ARCH:=avr32
 BOARD:=avr32
 BOARDNAME:=Atmel AVR32
 FEATURES:=squashfs
-LINUX_VERSION:=2.6.24.7
+LINUX_VERSION:=2.6.25.6
 
 include $(INCLUDE_DIR)/target.mk
 
diff --git a/target/linux/avr32/config-default b/target/linux/avr32/config-default
index ad676449fe..3fbfb59e89 100644
--- a/target/linux/avr32/config-default
+++ b/target/linux/avr32/config-default
@@ -7,10 +7,13 @@ CONFIG_AP700X_16_BIT_SMC=y
 # CONFIG_ARCH_HAVE_MEMORY_PRESENT is not set
 # CONFIG_ARCH_SPARSEMEM_ENABLE is not set
 # CONFIG_ARCH_SUPPORTS_MSI is not set
-CONFIG_ARCH_SUPPORTS_OPROFILE=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_AT32AP700X_WDT=m
 # CONFIG_ATMEL_PWM is not set
 # CONFIG_ATMEL_SSC is not set
-# CONFIG_ATMEL_TCLIB is not set
+CONFIG_ATMEL_TCB_CLKSRC=y
+CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
+CONFIG_ATMEL_TCLIB=y
 CONFIG_AVR32=y
 CONFIG_BASE_SMALL=0
 CONFIG_BITREVERSE=y
@@ -19,25 +22,38 @@ CONFIG_BOARD_ATNGW100=y
 # CONFIG_BOARD_ATSTK1000 is not set
 # CONFIG_BROADCOM_PHY is not set
 # CONFIG_BT is not set
+CONFIG_CLASSIC_RCU=y
 CONFIG_CPU_AT32AP7000=y
 CONFIG_CPU_AT32AP700X=y
 # CONFIG_CPU_FREQ is not set
+CONFIG_CRYPTO_AEAD=m
+CONFIG_CRYPTO_AUTHENC=m
+CONFIG_CRYPTO_GF128MUL=m
 # CONFIG_DEBUG_BUGVERBOSE is not set
 CONFIG_DW_DMAC=y
+# CONFIG_E1000E_ENABLED is not set
 CONFIG_ENTRY_ADDRESS=0x90000000
 # CONFIG_FIXED_PHY is not set
 CONFIG_FS_POSIX_ACL=y
+CONFIG_GENERIC_ALLOCATOR=y
 CONFIG_GENERIC_BUG=y
 CONFIG_GENERIC_CLOCKEVENTS=y
 CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
 CONFIG_GENERIC_GPIO=y
-# CONFIG_GEN_RTC is not set
 # CONFIG_GPIO_DEV is not set
+# CONFIG_GPIO_MCP23S08 is not set
+# CONFIG_GPIO_PCA953X is not set
+# CONFIG_GPIO_PCF857X is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT=y
 # CONFIG_HAVE_ARCH_BOOTMEM_NODE is not set
+CONFIG_HAVE_GPIO_LIB=y
+# CONFIG_HAVE_IDE is not set
+CONFIG_HAVE_KPROBES=y
+# CONFIG_HAVE_KRETPROBES is not set
+CONFIG_HAVE_OPROFILE=y
 # CONFIG_HW_RANDOM is not set
 CONFIG_I2C=y
 # CONFIG_I2C_ALGOBIT is not set
@@ -47,14 +63,23 @@ CONFIG_I2C_BOARDINFO=y
 # CONFIG_IBM_NEW_EMAC_RGMII is not set
 # CONFIG_IBM_NEW_EMAC_TAH is not set
 # CONFIG_IBM_NEW_EMAC_ZMII is not set
-# CONFIG_IDE is not set
 CONFIG_INITRAMFS_SOURCE=""
 # CONFIG_LEDS_ALIX is not set
 CONFIG_LEDS_GPIO=y
 CONFIG_LOADER_U_BOOT=y
 CONFIG_LOAD_ADDRESS=0x10000000
+CONFIG_LZO_COMPRESS=m
+CONFIG_LZO_DECOMPRESS=m
 CONFIG_MACB=y
 # CONFIG_MDIO_BITBANG is not set
+# CONFIG_MEMSTICK is not set
+CONFIG_MMC=m
+CONFIG_MMC_ATMELMCI=m
+CONFIG_MMC_BLOCK=m
+CONFIG_MMC_BLOCK_BOUNCE=y
+# CONFIG_MMC_DEBUG is not set
+# CONFIG_MMC_SPI is not set
+# CONFIG_MMC_UNSAFE_RESUME is not set
 CONFIG_MTD=y
 # CONFIG_MTD_ABSENT is not set
 CONFIG_MTD_BLKDEVS=y
@@ -104,16 +129,40 @@ CONFIG_MTD_PHYSMAP_START=0x80000000
 # CONFIG_NMI_DEBUGGING is not set
 CONFIG_NO_HZ=y
 # CONFIG_OWNERSHIP_TRACE is not set
-# CONFIG_PATA_AT32 is not set
 CONFIG_PERFORMANCE_COUNTERS=y
 CONFIG_PHYLIB=y
 CONFIG_PHYS_OFFSET=0x10000000
 CONFIG_PLATFORM_AT32AP=y
 # CONFIG_QSEMI_PHY is not set
-# CONFIG_RTC is not set
+# CONFIG_REALTEK_PHY is not set
+CONFIG_RTC_CLASS=m
+CONFIG_RTC_DRV_AT32AP700X=m
+# CONFIG_RTC_DRV_DS1307 is not set
+# CONFIG_RTC_DRV_DS1374 is not set
+# CONFIG_RTC_DRV_DS1553 is not set
+# CONFIG_RTC_DRV_DS1672 is not set
+# CONFIG_RTC_DRV_DS1742 is not set
+# CONFIG_RTC_DRV_ISL1208 is not set
+# CONFIG_RTC_DRV_M41T80 is not set
+# CONFIG_RTC_DRV_M48T59 is not set
+# CONFIG_RTC_DRV_M48T86 is not set
+# CONFIG_RTC_DRV_PCF8563 is not set
+# CONFIG_RTC_DRV_PCF8583 is not set
+# CONFIG_RTC_DRV_RS5C372 is not set
+# CONFIG_RTC_DRV_STK17TA8 is not set
+# CONFIG_RTC_DRV_TEST is not set
+# CONFIG_RTC_DRV_V3020 is not set
+# CONFIG_RTC_DRV_X1205 is not set
+CONFIG_RTC_INTF_DEV=y
+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_LIB=m
 CONFIG_RWSEM_GENERIC_SPINLOCK=y
 # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+# CONFIG_SCHED_HRTICK is not set
 CONFIG_SCSI_WAIT_SCAN=m
+# CONFIG_SDIO_UART is not set
 # CONFIG_SERIAL_8250 is not set
 CONFIG_SERIAL_ATMEL=y
 CONFIG_SERIAL_ATMEL_CONSOLE=y
@@ -122,6 +171,7 @@ CONFIG_SERIAL_ATMEL_PDC=y
 CONFIG_SLABINFO=y
 # CONFIG_SMSC_PHY is not set
 # CONFIG_SND_ATMEL_AC97 is not set
+# CONFIG_SOFT_WATCHDOG is not set
 # CONFIG_SPARSEMEM_STATIC is not set
 # CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
 CONFIG_SPI=y
@@ -133,11 +183,11 @@ CONFIG_SPI_MASTER=y
 CONFIG_SSB_POSSIBLE=y
 CONFIG_SUBARCH_AVR32B=y
 CONFIG_SYSVIPC_SYSCTL=y
+# CONFIG_THERMAL is not set
 CONFIG_TICK_ONESHOT=y
 # CONFIG_USB_ARCH_HAS_EHCI is not set
 # CONFIG_USB_ARCH_HAS_HCD is not set
 # CONFIG_USB_ARCH_HAS_OHCI is not set
-# CONFIG_USER_NS is not set
 # CONFIG_VGASTATE is not set
-# CONFIG_WATCHDOG is not set
+CONFIG_VIDEO_V4L2_COMMON=m
 CONFIG_ZONE_DMA_FLAG=0
diff --git a/target/linux/avr32/patches/100-git_sync.patch b/target/linux/avr32/patches/100-git_sync.patch
index 9c2d5ddf42..a840e45f38 100644
--- a/target/linux/avr32/patches/100-git_sync.patch
+++ b/target/linux/avr32/patches/100-git_sync.patch
@@ -1,5 +1,423 @@
---- /dev/null
-+++ b/arch/avr32/boards/atngw100/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91cap9_devices.c avr32-2.6/arch/arm/mach-at91/at91cap9_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91cap9_devices.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91cap9_devices.c	2008-06-12 15:09:38.603815938 +0200
+@@ -278,20 +278,25 @@
+  * -------------------------------------------------------------------- */
+ 
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+ 
+ #define NAND_BASE	AT91_CHIPSELECT_3
+ 
+ static struct resource nand_resources[] = {
+-	{
++	[0] = {
+ 		.start	= NAND_BASE,
+ 		.end	= NAND_BASE + SZ_256M - 1,
+ 		.flags	= IORESOURCE_MEM,
++	},
++	[1] = {
++		.start	= AT91_BASE_SYS + AT91_ECC,
++		.end	= AT91_BASE_SYS + AT91_ECC + SZ_512 - 1,
++		.flags	= IORESOURCE_MEM,
+ 	}
+ };
+ 
+ static struct platform_device at91cap9_nand_device = {
+-	.name		= "at91_nand",
++	.name		= "atmel_nand",
+ 	.id		= -1,
+ 	.dev		= {
+ 				.platform_data	= &nand_data,
+@@ -300,7 +305,7 @@
+ 	.num_resources	= ARRAY_SIZE(nand_resources),
+ };
+ 
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ 	unsigned long csa, mode;
+ 
+@@ -341,7 +346,7 @@
+ 	platform_device_register(&at91cap9_nand_device);
+ }
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+ 
+ /* --------------------------------------------------------------------
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91rm9200_devices.c avr32-2.6/arch/arm/mach-at91/at91rm9200_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91rm9200_devices.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91rm9200_devices.c	2008-06-12 15:09:38.603815938 +0200
+@@ -369,7 +369,7 @@
+  * -------------------------------------------------------------------- */
+ 
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+ 
+ #define NAND_BASE	AT91_CHIPSELECT_3
+ 
+@@ -382,7 +382,7 @@
+ };
+ 
+ static struct platform_device at91rm9200_nand_device = {
+-	.name		= "at91_nand",
++	.name		= "atmel_nand",
+ 	.id		= -1,
+ 	.dev		= {
+ 				.platform_data	= &nand_data,
+@@ -391,7 +391,7 @@
+ 	.num_resources	= ARRAY_SIZE(nand_resources),
+ };
+ 
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ 	unsigned int csa;
+ 
+@@ -429,7 +429,7 @@
+ 	platform_device_register(&at91rm9200_nand_device);
+ }
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+ 
+ 
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91sam9260_devices.c avr32-2.6/arch/arm/mach-at91/at91sam9260_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91sam9260_devices.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91sam9260_devices.c	2008-06-12 15:09:38.603815938 +0200
+@@ -283,20 +283,25 @@
+  * -------------------------------------------------------------------- */
+ 
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+ 
+ #define NAND_BASE	AT91_CHIPSELECT_3
+ 
+ static struct resource nand_resources[] = {
+-	{
++	[0] = {
+ 		.start	= NAND_BASE,
+ 		.end	= NAND_BASE + SZ_256M - 1,
+ 		.flags	= IORESOURCE_MEM,
++	},
++	[1] = {
++		.start	= AT91_BASE_SYS + AT91_ECC,
++		.end	= AT91_BASE_SYS + AT91_ECC + SZ_512 - 1,
++		.flags	= IORESOURCE_MEM,
+ 	}
+ };
+ 
+ static struct platform_device at91sam9260_nand_device = {
+-	.name		= "at91_nand",
++	.name		= "atmel_nand",
+ 	.id		= -1,
+ 	.dev		= {
+ 				.platform_data	= &nand_data,
+@@ -305,7 +310,7 @@
+ 	.num_resources	= ARRAY_SIZE(nand_resources),
+ };
+ 
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ 	unsigned long csa, mode;
+ 
+@@ -346,7 +351,7 @@
+ 	platform_device_register(&at91sam9260_nand_device);
+ }
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+ 
+ 
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91sam9261_devices.c avr32-2.6/arch/arm/mach-at91/at91sam9261_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91sam9261_devices.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91sam9261_devices.c	2008-06-12 15:09:38.607815889 +0200
+@@ -199,7 +199,7 @@
+  * -------------------------------------------------------------------- */
+ 
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+ 
+ #define NAND_BASE	AT91_CHIPSELECT_3
+ 
+@@ -211,8 +211,8 @@
+ 	}
+ };
+ 
+-static struct platform_device at91_nand_device = {
+-	.name		= "at91_nand",
++static struct platform_device atmel_nand_device = {
++	.name		= "atmel_nand",
+ 	.id		= -1,
+ 	.dev		= {
+ 				.platform_data	= &nand_data,
+@@ -221,7 +221,7 @@
+ 	.num_resources	= ARRAY_SIZE(nand_resources),
+ };
+ 
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ 	unsigned long csa, mode;
+ 
+@@ -262,11 +262,11 @@
+ 	at91_set_A_periph(AT91_PIN_PC1, 0);		/* NANDWE */
+ 
+ 	nand_data = *data;
+-	platform_device_register(&at91_nand_device);
++	platform_device_register(&atmel_nand_device);
+ }
+ 
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+ 
+ 
+@@ -539,6 +539,20 @@
+ 	at91_set_B_periph(AT91_PIN_PB28, 0);	/* LCDD23 */
+ #endif
+ 
++#ifdef CONFIG_FB_INTSRAM
++	{
++		void __iomem *fb;
++		struct resource *fb_res = &lcdc_resources[2];
++		size_t fb_len = fb_res->end - fb_res->start + 1;
++
++		fb = ioremap_writecombine(fb_res->start, fb_len);
++		if (fb) {
++			memset(fb, 0, fb_len);
++			iounmap(fb, fb_len);
++		}
++	}
++#endif
++
+ 	lcdc_data = *data;
+ 	platform_device_register(&at91_lcdc_device);
+ }
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91sam9263_devices.c avr32-2.6/arch/arm/mach-at91/at91sam9263_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91sam9263_devices.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91sam9263_devices.c	2008-06-12 15:09:38.607815889 +0200
+@@ -353,20 +353,25 @@
+  * -------------------------------------------------------------------- */
+ 
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+ 
+ #define NAND_BASE	AT91_CHIPSELECT_3
+ 
+ static struct resource nand_resources[] = {
+-	{
++	[0] = {
+ 		.start	= NAND_BASE,
+ 		.end	= NAND_BASE + SZ_256M - 1,
+ 		.flags	= IORESOURCE_MEM,
++	},
++	[1] = {
++		.start	= AT91_BASE_SYS + AT91_ECC0,
++		.end	= AT91_BASE_SYS + AT91_ECC0 + SZ_512 - 1,
++		.flags	= IORESOURCE_MEM,
+ 	}
+ };
+ 
+ static struct platform_device at91sam9263_nand_device = {
+-	.name		= "at91_nand",
++	.name		= "atmel_nand",
+ 	.id		= -1,
+ 	.dev		= {
+ 				.platform_data	= &nand_data,
+@@ -375,7 +380,7 @@
+ 	.num_resources	= ARRAY_SIZE(nand_resources),
+ };
+ 
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ 	unsigned long csa, mode;
+ 
+@@ -416,7 +421,7 @@
+ 	platform_device_register(&at91sam9263_nand_device);
+ }
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+ 
+ 
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/at91sam9rl_devices.c avr32-2.6/arch/arm/mach-at91/at91sam9rl_devices.c
+--- linux-2.6.25.6/arch/arm/mach-at91/at91sam9rl_devices.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/at91sam9rl_devices.c	2008-06-12 15:09:38.607815889 +0200
+@@ -100,20 +100,25 @@
+  * -------------------------------------------------------------------- */
+ 
+ #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
+-static struct at91_nand_data nand_data;
++static struct atmel_nand_data nand_data;
+ 
+ #define NAND_BASE	AT91_CHIPSELECT_3
+ 
+ static struct resource nand_resources[] = {
+-	{
++	[0] = {
+ 		.start	= NAND_BASE,
+ 		.end	= NAND_BASE + SZ_256M - 1,
+ 		.flags	= IORESOURCE_MEM,
++	},
++	[1] = {
++		.start	= AT91_BASE_SYS + AT91_ECC,
++		.end	= AT91_BASE_SYS + AT91_ECC + SZ_512 - 1,
++		.flags	= IORESOURCE_MEM,
+ 	}
+ };
+ 
+-static struct platform_device at91_nand_device = {
+-	.name		= "at91_nand",
++static struct platform_device atmel_nand_device = {
++	.name		= "atmel_nand",
+ 	.id		= -1,
+ 	.dev		= {
+ 				.platform_data	= &nand_data,
+@@ -122,7 +127,7 @@
+ 	.num_resources	= ARRAY_SIZE(nand_resources),
+ };
+ 
+-void __init at91_add_device_nand(struct at91_nand_data *data)
++void __init at91_add_device_nand(struct atmel_nand_data *data)
+ {
+ 	unsigned long csa;
+ 
+@@ -159,11 +164,11 @@
+ 	at91_set_A_periph(AT91_PIN_PB5, 0);		/* NANDWE */
+ 
+ 	nand_data = *data;
+-	platform_device_register(&at91_nand_device);
++	platform_device_register(&atmel_nand_device);
+ }
+ 
+ #else
+-void __init at91_add_device_nand(struct at91_nand_data *data) {}
++void __init at91_add_device_nand(struct atmel_nand_data *data) {}
+ #endif
+ 
+ 
+@@ -376,6 +381,20 @@
+ 	at91_set_B_periph(AT91_PIN_PC24, 0);	/* LCDD22 */
+ 	at91_set_B_periph(AT91_PIN_PC25, 0);	/* LCDD23 */
+ 
++#ifdef CONFIG_FB_INTSRAM
++	{
++		void __iomem *fb;
++		struct resource *fb_res = &lcdc_resources[2];
++		size_t fb_len = fb_res->end - fb_res->start + 1;
++
++		fb = ioremap_writecombine(fb_res->start, fb_len);
++		if (fb) {
++			memset(fb, 0, fb_len);
++			iounmap(fb, fb_len);
++		}
++	}
++#endif
++
+ 	lcdc_data = *data;
+ 	platform_device_register(&at91_lcdc_device);
+ }
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-cap9adk.c avr32-2.6/arch/arm/mach-at91/board-cap9adk.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-cap9adk.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-cap9adk.c	2008-06-12 15:09:38.607815889 +0200
+@@ -175,7 +175,7 @@
+ 	return cap9adk_nand_partitions;
+ }
+ 
+-static struct at91_nand_data __initdata cap9adk_nand_data = {
++static struct atmel_nand_data __initdata cap9adk_nand_data = {
+ 	.ale		= 21,
+ 	.cle		= 22,
+ //	.det_pin	= ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-dk.c avr32-2.6/arch/arm/mach-at91/board-dk.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-dk.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-dk.c	2008-06-12 15:09:38.611815840 +0200
+@@ -151,7 +151,7 @@
+ 	return dk_nand_partition;
+ }
+ 
+-static struct at91_nand_data __initdata dk_nand_data = {
++static struct atmel_nand_data __initdata dk_nand_data = {
+ 	.ale		= 22,
+ 	.cle		= 21,
+ 	.det_pin	= AT91_PIN_PB1,
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-kb9202.c avr32-2.6/arch/arm/mach-at91/board-kb9202.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-kb9202.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-kb9202.c	2008-06-12 15:09:38.611815840 +0200
+@@ -102,7 +102,7 @@
+ 	return kb9202_nand_partition;
+ }
+ 
+-static struct at91_nand_data __initdata kb9202_nand_data = {
++static struct atmel_nand_data __initdata kb9202_nand_data = {
+ 	.ale		= 22,
+ 	.cle		= 21,
+ 	// .det_pin	= ... not there
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-sam9260ek.c avr32-2.6/arch/arm/mach-at91/board-sam9260ek.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-sam9260ek.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-sam9260ek.c	2008-06-12 15:09:38.611815840 +0200
+@@ -146,7 +146,7 @@
+ 	return ek_nand_partition;
+ }
+ 
+-static struct at91_nand_data __initdata ek_nand_data = {
++static struct atmel_nand_data __initdata ek_nand_data = {
+ 	.ale		= 21,
+ 	.cle		= 22,
+ //	.det_pin	= ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-sam9261ek.c avr32-2.6/arch/arm/mach-at91/board-sam9261ek.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-sam9261ek.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-sam9261ek.c	2008-06-12 15:09:38.611815840 +0200
+@@ -189,7 +189,7 @@
+ 	return ek_nand_partition;
+ }
+ 
+-static struct at91_nand_data __initdata ek_nand_data = {
++static struct atmel_nand_data __initdata ek_nand_data = {
+ 	.ale		= 22,
+ 	.cle		= 21,
+ //	.det_pin	= ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-sam9263ek.c avr32-2.6/arch/arm/mach-at91/board-sam9263ek.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-sam9263ek.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-sam9263ek.c	2008-06-12 15:09:38.611815840 +0200
+@@ -192,7 +192,7 @@
+ 	return ek_nand_partition;
+ }
+ 
+-static struct at91_nand_data __initdata ek_nand_data = {
++static struct atmel_nand_data __initdata ek_nand_data = {
+ 	.ale		= 21,
+ 	.cle		= 22,
+ //	.det_pin	= ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/arm/mach-at91/board-sam9rlek.c avr32-2.6/arch/arm/mach-at91/board-sam9rlek.c
+--- linux-2.6.25.6/arch/arm/mach-at91/board-sam9rlek.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/arm/mach-at91/board-sam9rlek.c	2008-06-12 15:09:38.611815840 +0200
+@@ -93,7 +93,7 @@
+ 	return ek_nand_partition;
+ }
+ 
+-static struct at91_nand_data __initdata ek_nand_data = {
++static struct atmel_nand_data __initdata ek_nand_data = {
+ 	.ale		= 21,
+ 	.cle		= 22,
+ //	.det_pin	= ... not connected
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atngw100/Kconfig avr32-2.6/arch/avr32/boards/atngw100/Kconfig
+--- linux-2.6.25.6/arch/avr32/boards/atngw100/Kconfig	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/boards/atngw100/Kconfig	2008-06-12 15:09:38.711815728 +0200
 @@ -0,0 +1,12 @@
 +# NGW100 customization
 +
@@ -13,18 +431,24 @@
 +
 +	  Choose 'Y' here if you're having i2c-related problems and
 +	  want to rule out the i2c bus driver.
---- a/arch/avr32/boards/atngw100/setup.c
-+++ b/arch/avr32/boards/atngw100/setup.c
-@@ -20,7 +20,7 @@
- #include <asm/io.h>
- #include <asm/setup.h>
- 
--#include <asm/arch/at32ap7000.h>
-+#include <asm/arch/at32ap700x.h>
- #include <asm/arch/board.h>
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atngw100/setup.c avr32-2.6/arch/avr32/boards/atngw100/setup.c
+--- linux-2.6.25.6/arch/avr32/boards/atngw100/setup.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atngw100/setup.c	2008-06-12 15:09:38.711815728 +0200
+@@ -25,6 +25,13 @@
  #include <asm/arch/init.h>
  #include <asm/arch/portmux.h>
-@@ -37,11 +37,16 @@
+ 
++/* Oscillator frequencies. These are board-specific */
++unsigned long at32_board_osc_rates[3] = {
++	[0] = 32768,	/* 32.768 kHz on RTC osc */
++	[1] = 20000000,	/* 20 MHz on osc0 */
++	[2] = 12000000,	/* 12 MHz on osc1 */
++};
++
+ /* Initialized by bootloader-specific startup code. */
+ struct tag *bootloader_tags __initdata;
+ 
+@@ -37,11 +44,16 @@
  static struct spi_board_info spi0_board_info[] __initdata = {
  	{
  		.modalias	= "mtd_dataflash",
@@ -42,7 +466,7 @@
  /*
   * The next two functions should go away as the boot loader is
   * supposed to initialize the macb address registers with a valid
-@@ -124,6 +129,7 @@
+@@ -124,6 +136,7 @@
  	}
  };
  
@@ -50,7 +474,7 @@
  static struct i2c_gpio_platform_data i2c_gpio_data = {
  	.sda_pin		= GPIO_PIN_PA(6),
  	.scl_pin		= GPIO_PIN_PA(7),
-@@ -139,6 +145,7 @@
+@@ -139,6 +152,7 @@
  		.platform_data	= &i2c_gpio_data,
  	},
  };
@@ -58,7 +482,7 @@
  
  static int __init atngw100_init(void)
  {
-@@ -157,6 +164,7 @@
+@@ -157,6 +171,7 @@
  	set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
  
  	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
@@ -66,7 +490,7 @@
  	at32_add_device_usba(0, NULL);
  
  	for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {
-@@ -165,11 +173,15 @@
+@@ -165,11 +180,15 @@
  	}
  	platform_device_register(&ngw_gpio_leds);
  
@@ -82,64 +506,101 @@
  
  	return 0;
  }
---- a/arch/avr32/boards/atstk1000/atstk1000.h
-+++ b/arch/avr32/boards/atstk1000/atstk1000.h
-@@ -12,4 +12,6 @@
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1002.c avr32-2.6/arch/avr32/boards/atstk1000/atstk1002.c
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1002.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/atstk1002.c	2008-06-12 15:09:38.711815728 +0200
+@@ -1,7 +1,7 @@
+ /*
+- * ATSTK1002 daughterboard-specific init code
++ * ATSTK1002/ATSTK1006 daughterboard-specific init code
+  *
+- * Copyright (C) 2005-2006 Atmel Corporation
++ * Copyright (C) 2005-2007 Atmel Corporation
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -28,6 +28,80 @@
  
- extern struct atmel_lcdfb_info atstk1000_lcdc_data;
+ #include "atstk1000.h"
  
-+void atstk1000_setup_j2_leds(void);
++/* Oscillator frequencies. These are board specific */
++unsigned long at32_board_osc_rates[3] = {
++	[0] = 32768,	/* 32.768 kHz on RTC osc */
++	[1] = 20000000,	/* 20 MHz on osc0 */
++	[2] = 12000000,	/* 12 MHz on osc1 */
++};
 +
- #endif /* __ARCH_AVR32_BOARDS_ATSTK1000_ATSTK1000_H */
---- a/arch/avr32/boards/atstk1000/atstk1002.c
-+++ b/arch/avr32/boards/atstk1000/atstk1002.c
-@@ -11,7 +11,6 @@
- #include <linux/etherdevice.h>
- #include <linux/init.h>
- #include <linux/kernel.h>
--#include <linux/leds.h>
- #include <linux/platform_device.h>
- #include <linux/string.h>
- #include <linux/types.h>
-@@ -22,7 +21,7 @@
- 
- #include <asm/io.h>
- #include <asm/setup.h>
--#include <asm/arch/at32ap7000.h>
-+#include <asm/arch/at32ap700x.h>
- #include <asm/arch/board.h>
- #include <asm/arch/init.h>
- #include <asm/arch/portmux.h>
-@@ -49,18 +48,16 @@
- 	},
- };
- 
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
- static struct at73c213_board_info at73c213_data = {
- 	.ssc_id		= 0,
- 	.shortname	= "AVR32 STK1000 external DAC",
- };
- #endif
--#endif
- 
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
- static struct spi_board_info spi0_board_info[] __initdata = {
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
- 	{
- 		/* AT73C213 */
- 		.modalias	= "at73c213",
-@@ -80,12 +77,25 @@
- };
- #endif
++/*
++ * The ATSTK1006 daughterboard is very similar to the ATSTK1002. Both
++ * have the AT32AP7000 chip on board; the difference is that the
++ * STK1006 has 128 MB SDRAM (the STK1002 uses the 8 MB SDRAM chip on
++ * the STK1000 motherboard) and 256 MB NAND flash (the STK1002 has
++ * none.)
++ *
++ * The RAM difference is handled by the boot loader, so the only
++ * difference we end up handling here is the NAND flash.
++ */
++#ifdef CONFIG_BOARD_ATSTK1006
++#include <linux/mtd/partitions.h>
++#include <asm/arch/smc.h>
++
++static struct smc_timing nand_timing __initdata = {
++	.ncs_read_setup		= 0,
++	.nrd_setup		= 10,
++	.ncs_write_setup	= 0,
++	.nwe_setup		= 10,
++
++	.ncs_read_pulse		= 30,
++	.nrd_pulse		= 15,
++	.ncs_write_pulse	= 30,
++	.nwe_pulse		= 15,
++
++	.read_cycle		= 30,
++	.write_cycle		= 30,
++
++	.ncs_read_recover	= 0,
++	.nrd_recover		= 15,
++	.ncs_write_recover	= 0,
++	/* WE# high -> RE# low min 60 ns */
++	.nwe_recover		= 50,
++};
++
++static struct smc_config nand_config __initdata = {
++	.bus_width		= 1,
++	.nrd_controlled		= 1,
++	.nwe_controlled		= 1,
++	.nwait_mode		= 0,
++	.byte_write		= 0,
++	.tdf_cycles		= 2,
++	.tdf_mode		= 0,
++};
++
++static struct mtd_partition nand_partitions[] = {
++	{
++		.name		= "main",
++		.offset		= 0x00000000,
++		.size		= MTDPART_SIZ_FULL,
++	},
++};
++
++static struct mtd_partition *nand_part_info(int size, int *num_partitions)
++{
++	*num_partitions = ARRAY_SIZE(nand_partitions);
++	return nand_partitions;
++}
++
++static struct atmel_nand_data atstk1006_nand_data __initdata = {
++	.cle		= 21,
++	.ale		= 22,
++	.rdy_pin	= GPIO_PIN_PB(30),
++	.enable_pin	= GPIO_PIN_PB(29),
++	.partition_info	= nand_part_info,
++};
++#endif
  
--#ifdef CONFIG_BOARD_ATSTK1002_SPI1
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
- static struct spi_board_info spi1_board_info[] __initdata = { {
- 	/* patch in custom entries here */
+ struct eth_addr {
+ 	u8 addr[6];
+@@ -83,6 +157,19 @@
  } };
  #endif
  
@@ -159,125 +620,21 @@
  /*
   * The next two functions should go away as the boot loader is
   * supposed to initialize the macb address registers with a valid
-@@ -141,68 +151,8 @@
- 	clk_put(pclk);
- }
- 
--#ifdef CONFIG_BOARD_ATSTK1002_J2_LED
--
--static struct gpio_led stk_j2_led[] = {
--#ifdef CONFIG_BOARD_ATSTK1002_J2_LED8
--#define LEDSTRING "J2 jumpered to LED8"
--	{ .name = "led0:amber", .gpio = GPIO_PIN_PB( 8), },
--	{ .name = "led1:amber", .gpio = GPIO_PIN_PB( 9), },
--	{ .name = "led2:amber", .gpio = GPIO_PIN_PB(10), },
--	{ .name = "led3:amber", .gpio = GPIO_PIN_PB(13), },
--	{ .name = "led4:amber", .gpio = GPIO_PIN_PB(14), },
--	{ .name = "led5:amber", .gpio = GPIO_PIN_PB(15), },
--	{ .name = "led6:amber", .gpio = GPIO_PIN_PB(16), },
--	{ .name = "led7:amber", .gpio = GPIO_PIN_PB(30),
--			.default_trigger = "heartbeat", },
--#else	/* RGB */
--#define LEDSTRING "J2 jumpered to RGB LEDs"
--	{ .name = "r1:red",     .gpio = GPIO_PIN_PB( 8), },
--	{ .name = "g1:green",   .gpio = GPIO_PIN_PB(10), },
--	{ .name = "b1:blue",    .gpio = GPIO_PIN_PB(14), },
--
--	{ .name = "r2:red",     .gpio = GPIO_PIN_PB( 9),
--			.default_trigger = "heartbeat", },
--	{ .name = "g2:green",   .gpio = GPIO_PIN_PB(13), },
--	{ .name = "b2:blue",    .gpio = GPIO_PIN_PB(15),
--			.default_trigger = "heartbeat", },
--	/* PB16, PB30 unused */
--#endif
--};
--
--static struct gpio_led_platform_data stk_j2_led_data = {
--	.num_leds	= ARRAY_SIZE(stk_j2_led),
--	.leds		= stk_j2_led,
--};
--
--static struct platform_device stk_j2_led_dev = {
--	.name		= "leds-gpio",
--	.id		= 2,	/* gpio block J2 */
--	.dev		= {
--		.platform_data	= &stk_j2_led_data,
--	},
--};
--
--static void setup_j2_leds(void)
--{
--	unsigned	i;
--
--	for (i = 0; i < ARRAY_SIZE(stk_j2_led); i++)
--		at32_select_gpio(stk_j2_led[i].gpio, AT32_GPIOF_OUTPUT);
--
--	printk("STK1002: " LEDSTRING "\n");
--	platform_device_register(&stk_j2_led_dev);
--}
--
--#else
--static void setup_j2_leds(void)
--{
--}
--#endif
--
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
--static void __init at73c213_set_clk(struct at73c213_board_info *info)
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static void __init atstk1002_setup_extdac(void)
- {
- 	struct clk *gclk;
- 	struct clk *pll;
-@@ -220,7 +170,7 @@
- 	}
- 
- 	at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
--	info->dac_clk = gclk;
-+	at73c213_data.dac_clk = gclk;
- 
- err_set_clk:
- 	clk_put(pll);
-@@ -229,12 +179,16 @@
- err_gclk:
- 	return;
- }
--#endif
--#endif
-+#else
-+static void __init atstk1002_setup_extdac(void)
-+{
-+
-+}
-+#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
- 
- void __init setup_board(void)
- {
--#ifdef	CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
-+#ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
- 	at32_map_usart(0, 1);	/* USART 0/B: /dev/ttyS1, IRDA */
- #else
- 	at32_map_usart(1, 0);	/* USART 1/A: /dev/ttyS0, DB9 */
-@@ -271,7 +225,7 @@
+@@ -212,6 +299,12 @@
  
  	at32_add_system_devices();
  
--#ifdef	CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
-+#ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
++#ifdef CONFIG_BOARD_ATSTK1006
++	smc_set_timing(&nand_config, &nand_timing);
++	smc_set_configuration(3, &nand_config);
++	at32_add_device_nand(0, &atstk1006_nand_data);
++#endif
++
+ #ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
  	at32_add_device_usart(1);
  #else
- 	at32_add_device_usart(0);
-@@ -281,12 +235,16 @@
- #ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
- 	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
- #endif
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
- 	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
- #endif
--#ifdef CONFIG_BOARD_ATSTK1002_SPI1
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
+@@ -228,16 +321,30 @@
+ #ifdef CONFIG_BOARD_ATSTK100X_SPI1
  	at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
  #endif
 +	at32_add_device_twi(0, NULL, 0);
@@ -287,102 +644,48 @@
  #ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
  	set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
  #else
-@@ -294,18 +252,23 @@
- 			     fbmem_start, fbmem_size);
+ 	at32_add_device_lcdc(0, &atstk1000_lcdc_data,
+-			     fbmem_start, fbmem_size);
++			     fbmem_start, fbmem_size, 0);
  #endif
  	at32_add_device_usba(0, NULL);
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
--	at32_add_device_ssc(0, ATMEL_SSC_TX);
 +#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_AC97
 +	at32_add_device_ac97c(0);
 +#else
 +	at32_add_device_abdac(0);
- #endif
--
--	setup_j2_leds();
--
--#ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
--#ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
--	at73c213_set_clk(&at73c213_data);
-+#ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
-+	at32_add_device_ssc(0, ATMEL_SSC_TX);
++#endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
+ 	at32_add_device_ssc(0, ATMEL_SSC_TX);
  #endif
 +	at32_add_device_cf(0, 2, &cf0_data);
 +#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_PSIF
 +	at32_add_device_psif(0);
 +	at32_add_device_psif(1);
- #endif
- 
-+	atstk1000_setup_j2_leds();
-+	atstk1002_setup_extdac();
-+
- 	return 0;
- }
- postcore_initcall(atstk1002_init);
---- /dev/null
-+++ b/arch/avr32/boards/atstk1000/atstk1003.c
-@@ -0,0 +1,185 @@
-+/*
-+ * ATSTK1003 daughterboard-specific init code
-+ *
-+ * Copyright (C) 2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+#include <linux/string.h>
-+#include <linux/types.h>
-+
-+#include <linux/spi/at73c213.h>
-+#include <linux/spi/spi.h>
-+
-+#include <asm/setup.h>
-+
-+#include <asm/arch/at32ap700x.h>
-+#include <asm/arch/board.h>
-+#include <asm/arch/init.h>
-+#include <asm/arch/portmux.h>
-+
-+#include "atstk1000.h"
-+
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static struct at73c213_board_info at73c213_data = {
-+	.ssc_id		= 0,
-+	.shortname	= "AVR32 STK1000 external DAC",
-+};
-+#endif
-+
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
-+static struct spi_board_info spi0_board_info[] __initdata = {
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+	{
-+		/* AT73C213 */
-+		.modalias	= "at73c213",
-+		.max_speed_hz	= 200000,
-+		.chip_select	= 0,
-+		.mode		= SPI_MODE_1,
-+		.platform_data	= &at73c213_data,
-+	},
 +#endif
-+	/*
-+	 * We can control the LTV350QV LCD panel, but it isn't much
-+	 * point since we don't have an LCD controller...
-+	 */
+ 
+ 	atstk1000_setup_j2_leds();
+ 	atstk1002_setup_extdac();
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1003.c avr32-2.6/arch/avr32/boards/atstk1000/atstk1003.c
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1003.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/atstk1003.c	2008-06-12 15:09:38.711815728 +0200
+@@ -27,6 +27,13 @@
+ 
+ #include "atstk1000.h"
+ 
++/* Oscillator frequencies. These are board specific */
++unsigned long at32_board_osc_rates[3] = {
++	[0] = 32768,	/* 32.768 kHz on RTC osc */
++	[1] = 20000000,	/* 20 MHz on osc0 */
++	[2] = 12000000,	/* 12 MHz on osc1 */
 +};
-+#endif
-+
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
-+static struct spi_board_info spi1_board_info[] __initdata = { {
-+	/* patch in custom entries here */
-+} };
-+#endif
 +
+ #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
+ static struct at73c213_board_info at73c213_data = {
+ 	.ssc_id		= 0,
+@@ -59,6 +66,19 @@
+ } };
+ #endif
+ 
 +static struct cf_platform_data __initdata cf0_data = {
 +#ifdef CONFIG_BOARD_ATSTK1000_CF_HACKS
 +	.detect_pin	= CONFIG_BOARD_ATSTK1000_CF_DETECT_PIN,
@@ -396,399 +699,94 @@
 +	.cs		= 4,
 +};
 +
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static void __init atstk1003_setup_extdac(void)
-+{
-+	struct clk *gclk;
-+	struct clk *pll;
-+
-+	gclk = clk_get(NULL, "gclk0");
-+	if (IS_ERR(gclk))
-+		goto err_gclk;
-+	pll = clk_get(NULL, "pll0");
-+	if (IS_ERR(pll))
-+		goto err_pll;
-+
-+	if (clk_set_parent(gclk, pll)) {
-+		pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
-+		goto err_set_clk;
-+	}
-+
-+	at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
-+	at73c213_data.dac_clk = gclk;
-+
-+err_set_clk:
-+	clk_put(pll);
-+err_pll:
-+	clk_put(gclk);
-+err_gclk:
-+	return;
-+}
-+#else
-+static void __init atstk1003_setup_extdac(void)
-+{
-+
-+}
-+#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
-+
-+void __init setup_board(void)
-+{
-+#ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
-+	at32_map_usart(0, 1);	/* USART 0/B: /dev/ttyS1, IRDA */
-+#else
-+	at32_map_usart(1, 0);	/* USART 1/A: /dev/ttyS0, DB9 */
-+#endif
-+	/* USART 2/unused: expansion connector */
-+	at32_map_usart(3, 2);	/* USART 3/C: /dev/ttyS2, DB9 */
-+
-+	at32_setup_serial_console(0);
-+}
-+
-+static int __init atstk1003_init(void)
-+{
-+	/*
-+	 * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
-+	 * SDRAM-specific pins so that nobody messes with them.
-+	 */
-+	at32_reserve_pin(GPIO_PIN_PE(0));	/* DATA[16]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(1));	/* DATA[17]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(2));	/* DATA[18]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(3));	/* DATA[19]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(4));	/* DATA[20]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(5));	/* DATA[21]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(6));	/* DATA[22]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(7));	/* DATA[23]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(8));	/* DATA[24]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(9));	/* DATA[25]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(10));	/* DATA[26]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(11));	/* DATA[27]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(12));	/* DATA[28]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(13));	/* DATA[29]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(14));	/* DATA[30]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(15));	/* DATA[31]	*/
-+	at32_reserve_pin(GPIO_PIN_PE(26));	/* SDCS		*/
-+
-+	at32_add_system_devices();
-+
-+#ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
-+	at32_add_device_usart(1);
-+#else
-+	at32_add_device_usart(0);
-+#endif
-+	at32_add_device_usart(2);
-+
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
-+	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
-+#endif
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
-+	at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
-+#endif
-+#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
+ #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
+ static void __init atstk1003_setup_extdac(void)
+ {
+@@ -147,12 +167,22 @@
+ 	at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
+ #endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
+-	at32_add_device_mci(0);
 +	at32_add_device_mci(0, NULL);
-+#endif
-+	at32_add_device_usba(0, NULL);
+ #endif
+ 	at32_add_device_usba(0, NULL);
 +#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_AC97
 +	at32_add_device_ac97c(0);
 +#else
 +	at32_add_device_abdac(0);
 +#endif
-+#ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
-+	at32_add_device_ssc(0, ATMEL_SSC_TX);
-+#endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
+ 	at32_add_device_ssc(0, ATMEL_SSC_TX);
+ #endif
 +	at32_add_device_cf(0, 2, &cf0_data);
 +#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_PSIF
 +	at32_add_device_psif(0);
 +	at32_add_device_psif(1);
 +#endif
-+
-+	atstk1000_setup_j2_leds();
-+	atstk1003_setup_extdac();
-+
-+	return 0;
-+}
-+postcore_initcall(atstk1003_init);
---- /dev/null
-+++ b/arch/avr32/boards/atstk1000/atstk1004.c
-@@ -0,0 +1,156 @@
-+/*
-+ * ATSTK1003 daughterboard-specific init code
-+ *
-+ * Copyright (C) 2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+#include <linux/string.h>
-+#include <linux/types.h>
-+
-+#include <linux/spi/at73c213.h>
-+#include <linux/spi/spi.h>
-+
-+#include <video/atmel_lcdc.h>
-+
-+#include <asm/setup.h>
-+
-+#include <asm/arch/at32ap700x.h>
-+#include <asm/arch/board.h>
-+#include <asm/arch/init.h>
-+#include <asm/arch/portmux.h>
-+
-+#include "atstk1000.h"
-+
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static struct at73c213_board_info at73c213_data = {
-+	.ssc_id		= 0,
-+	.shortname	= "AVR32 STK1000 external DAC",
-+};
-+#endif
-+
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
-+static struct spi_board_info spi0_board_info[] __initdata = {
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+	{
-+		/* AT73C213 */
-+		.modalias	= "at73c213",
-+		.max_speed_hz	= 200000,
-+		.chip_select	= 0,
-+		.mode		= SPI_MODE_1,
-+		.platform_data	= &at73c213_data,
-+	},
-+#endif
-+	{
-+		/* QVGA display */
-+		.modalias	= "ltv350qv",
-+		.max_speed_hz	= 16000000,
-+		.chip_select	= 1,
-+		.mode		= SPI_MODE_3,
-+	},
+ 
+ 	atstk1000_setup_j2_leds();
+ 	atstk1003_setup_extdac();
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1004.c avr32-2.6/arch/avr32/boards/atstk1000/atstk1004.c
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/atstk1004.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/atstk1004.c	2008-06-12 15:09:38.715815679 +0200
+@@ -29,6 +29,13 @@
+ 
+ #include "atstk1000.h"
+ 
++/* Oscillator frequencies. These are board specific */
++unsigned long at32_board_osc_rates[3] = {
++	[0] = 32768,	/* 32.768 kHz on RTC osc */
++	[1] = 20000000,	/* 20 MHz on osc0 */
++	[2] = 12000000,	/* 12 MHz on osc1 */
 +};
-+#endif
-+
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
-+static struct spi_board_info spi1_board_info[] __initdata = { {
-+	/* patch in custom entries here */
-+} };
-+#endif
-+
-+#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
-+static void __init atstk1004_setup_extdac(void)
-+{
-+	struct clk *gclk;
-+	struct clk *pll;
-+
-+	gclk = clk_get(NULL, "gclk0");
-+	if (IS_ERR(gclk))
-+		goto err_gclk;
-+	pll = clk_get(NULL, "pll0");
-+	if (IS_ERR(pll))
-+		goto err_pll;
-+
-+	if (clk_set_parent(gclk, pll)) {
-+		pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
-+		goto err_set_clk;
-+	}
-+
-+	at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
-+	at73c213_data.dac_clk = gclk;
-+
-+err_set_clk:
-+	clk_put(pll);
-+err_pll:
-+	clk_put(gclk);
-+err_gclk:
-+	return;
-+}
-+#else
-+static void __init atstk1004_setup_extdac(void)
-+{
-+
-+}
-+#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
 +
-+void __init setup_board(void)
-+{
-+#ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
-+	at32_map_usart(0, 1);	/* USART 0/B: /dev/ttyS1, IRDA */
-+#else
-+	at32_map_usart(1, 0);	/* USART 1/A: /dev/ttyS0, DB9 */
-+#endif
-+	/* USART 2/unused: expansion connector */
-+	at32_map_usart(3, 2);	/* USART 3/C: /dev/ttyS2, DB9 */
-+
-+	at32_setup_serial_console(0);
-+}
-+
-+static int __init atstk1004_init(void)
-+{
-+	at32_add_system_devices();
-+
-+#ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
-+	at32_add_device_usart(1);
-+#else
-+	at32_add_device_usart(0);
-+#endif
-+	at32_add_device_usart(2);
-+
-+#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
-+	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
-+#endif
-+#ifdef CONFIG_BOARD_ATSTK100X_SPI1
-+	at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
-+#endif
-+#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
+ #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
+ static struct at73c213_board_info at73c213_data = {
+ 	.ssc_id		= 0,
+@@ -130,14 +137,23 @@
+ 	at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
+ #endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
+-	at32_add_device_mci(0);
 +	at32_add_device_mci(0, NULL);
-+#endif
-+	at32_add_device_lcdc(0, &atstk1000_lcdc_data,
-+			     fbmem_start, fbmem_size);
-+	at32_add_device_usba(0, NULL);
+ #endif
+ 	at32_add_device_lcdc(0, &atstk1000_lcdc_data,
+-			     fbmem_start, fbmem_size);
++			     fbmem_start, fbmem_size, 0);
+ 	at32_add_device_usba(0, NULL);
 +#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_AC97
 +	at32_add_device_ac97c(0);
 +#else
 +	at32_add_device_abdac(0);
 +#endif
-+#ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
-+	at32_add_device_ssc(0, ATMEL_SSC_TX);
-+#endif
+ #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
+ 	at32_add_device_ssc(0, ATMEL_SSC_TX);
+ #endif
 +#ifdef CONFIG_BOARD_ATSTK100X_ENABLE_PSIF
 +	at32_add_device_psif(0);
 +	at32_add_device_psif(1);
 +#endif
-+
-+	atstk1000_setup_j2_leds();
-+	atstk1004_setup_extdac();
-+
-+	return 0;
-+}
-+postcore_initcall(atstk1004_init);
---- a/arch/avr32/boards/atstk1000/Kconfig
-+++ b/arch/avr32/boards/atstk1000/Kconfig
-@@ -1,34 +1,53 @@
- # STK1000 customization
- 
--if BOARD_ATSTK1002
-+if BOARD_ATSTK1000
  
--config BOARD_ATSTK1002_CUSTOM
--	bool "Non-default STK-1002 jumper settings"
-+choice
-+	prompt "ATSTK1000 CPU daughterboard type"
-+	default BOARD_ATSTK1002
-+
-+config BOARD_ATSTK1002
-+	bool "ATSTK1002"
+ 	atstk1000_setup_j2_leds();
+ 	atstk1004_setup_extdac();
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/Kconfig avr32-2.6/arch/avr32/boards/atstk1000/Kconfig
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/Kconfig	2008-06-12 15:09:38.711815728 +0200
+@@ -18,6 +18,10 @@
+ 	bool "ATSTK1004"
+ 	select CPU_AT32AP7002
+ 
++config BOARD_ATSTK1006
++	bool "ATSTK1006"
 +	select CPU_AT32AP7000
 +
-+config BOARD_ATSTK1003
-+	bool "ATSTK1003"
-+	select CPU_AT32AP7001
-+
-+config BOARD_ATSTK1004
-+	bool "ATSTK1004"
-+	select CPU_AT32AP7002
-+
-+endchoice
-+
-+
-+config BOARD_ATSTK100X_CUSTOM
-+	bool "Non-default STK1002/STK1003/STK1004 jumper settings"
- 	help
- 	  You will normally leave the jumpers on the CPU card at their
- 	  default settings.  If you need to use certain peripherals,
- 	  you will need to change some of those jumpers.
- 
--if BOARD_ATSTK1002_CUSTOM
-+if BOARD_ATSTK100X_CUSTOM
- 
--config BOARD_ATSTK1002_SW1_CUSTOM
-+config BOARD_ATSTK100X_SW1_CUSTOM
- 	bool "SW1: use SSC1 (not SPI0)"
- 	help
- 	  This also prevents using the external DAC as an audio interface,
- 	  and means you can't initialize the on-board QVGA display.
- 
--config BOARD_ATSTK1002_SW2_CUSTOM
-+config BOARD_ATSTK100X_SW2_CUSTOM
- 	bool "SW2: use IRDA or TIMER0 (not UART-A, MMC/SD, and PS2-A)"
- 	help
- 	  If you change this you'll want an updated boot loader putting
- 	  the console on UART-C not UART-A.
- 
--config BOARD_ATSTK1002_SW3_CUSTOM
-+config BOARD_ATSTK100X_SW3_CUSTOM
- 	bool "SW3: use TIMER1 (not SSC0 and GCLK)"
- 	help
- 	  This also prevents using the external DAC as an audio interface.
- 
--config BOARD_ATSTK1002_SW4_CUSTOM
-+config BOARD_ATSTK100X_SW4_CUSTOM
- 	bool "SW4: use ISI/Camera (not GPIOs, SPI1, and PS2-B)"
- 	help
- 	  To use the camera interface you'll need a custom card (on the
-@@ -36,27 +55,29 @@
- 
- config BOARD_ATSTK1002_SW5_CUSTOM
- 	bool "SW5: use MACB1 (not LCDC)"
-+	depends on BOARD_ATSTK1002
- 
- config BOARD_ATSTK1002_SW6_CUSTOM
- 	bool "SW6: more GPIOs (not MACB0)"
-+	depends on BOARD_ATSTK1002
- 
- endif	# custom
- 
--config BOARD_ATSTK1002_SPI1
-+config BOARD_ATSTK100X_SPI1
- 	bool "Configure SPI1 controller"
--	depends on !BOARD_ATSTK1002_SW4_CUSTOM
-+	depends on !BOARD_ATSTK100X_SW4_CUSTOM
- 	help
- 	  All the signals for the second SPI controller are available on
- 	  GPIO lines and accessed through the J1 jumper block.  Say "y"
- 	  here to configure that SPI controller.
- 
--config BOARD_ATSTK1002_J2_LED
-+config BOARD_ATSTK1000_J2_LED
- 	bool
--	default BOARD_ATSTK1002_J2_LED8 || BOARD_ATSTK1002_J2_RGB
-+	default BOARD_ATSTK1000_J2_LED8 || BOARD_ATSTK1000_J2_RGB
- 
- choice
- 	prompt "LEDs connected to J2:"
--	depends on LEDS_GPIO && !BOARD_ATSTK1002_SW4_CUSTOM
-+	depends on LEDS_GPIO && !BOARD_ATSTK100X_SW4_CUSTOM
- 	optional
- 	help
- 	  Select this if you have jumpered the J2 jumper block to the
-@@ -64,16 +85,77 @@
- 	  IDC cable.  A default "heartbeat" trigger is provided, but
- 	  you can of course override this.
- 
--config BOARD_ATSTK1002_J2_LED8
-+config BOARD_ATSTK1000_J2_LED8
- 	bool "LED0..LED7"
- 	help
- 	  Select this if J2 is jumpered to LED0..LED7 amber leds.
+ endchoice
  
--config BOARD_ATSTK1002_J2_RGB
-+config BOARD_ATSTK1000_J2_RGB
- 	bool "RGB leds"
- 	help
- 	  Select this if J2 is jumpered to the RGB leds.
  
- endchoice
+@@ -102,4 +106,60 @@
+ 	depends on !BOARD_ATSTK100X_SW1_CUSTOM && !BOARD_ATSTK100X_SW3_CUSTOM
+ 	default y
  
--endif	# stk 1002
-+config BOARD_ATSTK1000_EXTDAC
-+	bool
-+	depends on !BOARD_ATSTK100X_SW1_CUSTOM && !BOARD_ATSTK100X_SW3_CUSTOM
-+	default y
-+
 +config BOARD_ATSTK100X_ENABLE_AC97
 +	bool "Use AC97C instead of ABDAC"
 +	help
@@ -845,203 +843,97 @@
 +	  Y if you have level convertion hardware or a PS/2 device capable of
 +	  operating on 3.3 volt.
 +
-+endif	# stk 1000
---- a/arch/avr32/boards/atstk1000/Makefile
-+++ b/arch/avr32/boards/atstk1000/Makefile
-@@ -1,2 +1,4 @@
- obj-y				+= setup.o flash.o
+ endif	# stk 1000
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/boards/atstk1000/Makefile avr32-2.6/arch/avr32/boards/atstk1000/Makefile
+--- linux-2.6.25.6/arch/avr32/boards/atstk1000/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/boards/atstk1000/Makefile	2008-06-12 15:09:38.711815728 +0200
+@@ -2,3 +2,4 @@
  obj-$(CONFIG_BOARD_ATSTK1002)	+= atstk1002.o
-+obj-$(CONFIG_BOARD_ATSTK1003)	+= atstk1003.o
-+obj-$(CONFIG_BOARD_ATSTK1004)	+= atstk1004.o
---- a/arch/avr32/boards/atstk1000/setup.c
-+++ b/arch/avr32/boards/atstk1000/setup.c
-@@ -10,13 +10,17 @@
- #include <linux/bootmem.h>
- #include <linux/fb.h>
- #include <linux/init.h>
-+#include <linux/platform_device.h>
- #include <linux/types.h>
- #include <linux/linkage.h>
- 
- #include <video/atmel_lcdc.h>
- 
- #include <asm/setup.h>
-+
-+#include <asm/arch/at32ap700x.h>
- #include <asm/arch/board.h>
-+#include <asm/arch/portmux.h>
- 
- #include "atstk1000.h"
- 
-@@ -61,3 +65,63 @@
- 	.default_monspecs	= &atstk1000_default_monspecs,
- 	.guard_time		= 2,
- };
-+
-+#ifdef CONFIG_BOARD_ATSTK1000_J2_LED
-+#include <linux/leds.h>
-+
-+static struct gpio_led stk1000_j2_led[] = {
-+#ifdef CONFIG_BOARD_ATSTK1000_J2_LED8
-+#define LEDSTRING "J2 jumpered to LED8"
-+	{ .name = "led0:amber", .gpio = GPIO_PIN_PB( 8), },
-+	{ .name = "led1:amber", .gpio = GPIO_PIN_PB( 9), },
-+	{ .name = "led2:amber", .gpio = GPIO_PIN_PB(10), },
-+	{ .name = "led3:amber", .gpio = GPIO_PIN_PB(13), },
-+	{ .name = "led4:amber", .gpio = GPIO_PIN_PB(14), },
-+	{ .name = "led5:amber", .gpio = GPIO_PIN_PB(15), },
-+	{ .name = "led6:amber", .gpio = GPIO_PIN_PB(16), },
-+	{ .name = "led7:amber", .gpio = GPIO_PIN_PB(30),
-+			.default_trigger = "heartbeat", },
-+#else	/* RGB */
-+#define LEDSTRING "J2 jumpered to RGB LEDs"
-+	{ .name = "r1:red",     .gpio = GPIO_PIN_PB( 8), },
-+	{ .name = "g1:green",   .gpio = GPIO_PIN_PB(10), },
-+	{ .name = "b1:blue",    .gpio = GPIO_PIN_PB(14), },
-+
-+	{ .name = "r2:red",     .gpio = GPIO_PIN_PB( 9),
-+			.default_trigger = "heartbeat", },
-+	{ .name = "g2:green",   .gpio = GPIO_PIN_PB(13), },
-+	{ .name = "b2:blue",    .gpio = GPIO_PIN_PB(15),
-+			.default_trigger = "heartbeat", },
-+	/* PB16, PB30 unused */
-+#endif
-+};
-+
-+static struct gpio_led_platform_data stk1000_j2_led_data = {
-+	.num_leds	= ARRAY_SIZE(stk1000_j2_led),
-+	.leds		= stk1000_j2_led,
-+};
-+
-+static struct platform_device stk1000_j2_led_dev = {
-+	.name		= "leds-gpio",
-+	.id		= 2,	/* gpio block J2 */
-+	.dev		= {
-+		.platform_data	= &stk1000_j2_led_data,
-+	},
-+};
-+
-+void __init atstk1000_setup_j2_leds(void)
-+{
-+	unsigned	i;
-+
-+	for (i = 0; i < ARRAY_SIZE(stk1000_j2_led); i++)
-+		at32_select_gpio(stk1000_j2_led[i].gpio, AT32_GPIOF_OUTPUT);
-+
-+	printk("STK1000: " LEDSTRING "\n");
-+	platform_device_register(&stk1000_j2_led_dev);
-+}
-+#else /* CONFIG_BOARD_ATSTK1000_J2_LED */
-+void __init atstk1000_setup_j2_leds(void)
-+{
-+
-+}
-+#endif /* CONFIG_BOARD_ATSTK1000_J2_LED */
---- a/arch/avr32/configs/atngw100_defconfig
-+++ b/arch/avr32/configs/atngw100_defconfig
-@@ -1,46 +1,52 @@
+ obj-$(CONFIG_BOARD_ATSTK1003)	+= atstk1003.o
+ obj-$(CONFIG_BOARD_ATSTK1004)	+= atstk1004.o
++obj-$(CONFIG_BOARD_ATSTK1006)	+= atstk1002.o
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atngw100_defconfig avr32-2.6/arch/avr32/configs/atngw100_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atngw100_defconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/configs/atngw100_defconfig	2008-06-12 15:09:38.715815679 +0200
+@@ -1,7 +1,7 @@
  #
  # Automatically generated make config: don't edit
--# Linux kernel version: 2.6.22-rc5
--# Sat Jun 23 15:40:05 2007
-+# Linux kernel version: 2.6.24
-+# Thu Mar  6 12:49:54 2008
+-# Linux kernel version: 2.6.24-rc7
+-# Wed Jan  9 23:20:41 2008
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:23:36 2008
  #
  CONFIG_AVR32=y
  CONFIG_GENERIC_GPIO=y
- CONFIG_GENERIC_HARDIRQS=y
-+CONFIG_STACKTRACE_SUPPORT=y
-+CONFIG_LOCKDEP_SUPPORT=y
-+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
- CONFIG_HARDIRQS_SW_RESEND=y
+@@ -13,10 +13,10 @@
  CONFIG_GENERIC_IRQ_PROBE=y
  CONFIG_RWSEM_GENERIC_SPINLOCK=y
  CONFIG_GENERIC_TIME=y
 +CONFIG_GENERIC_CLOCKEVENTS=y
-+# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+ # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
  # CONFIG_ARCH_HAS_ILOG2_U32 is not set
  # CONFIG_ARCH_HAS_ILOG2_U64 is not set
-+CONFIG_ARCH_SUPPORTS_OPROFILE=y
+-CONFIG_ARCH_SUPPORTS_OPROFILE=y
  CONFIG_GENERIC_HWEIGHT=y
  CONFIG_GENERIC_CALIBRATE_DELAY=y
  CONFIG_GENERIC_BUG=y
- CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
- 
- #
--# Code maturity level options
-+# General setup
- #
- CONFIG_EXPERIMENTAL=y
- CONFIG_BROKEN_ON_SMP=y
- CONFIG_INIT_ENV_ARG_LIMIT=32
--
--#
--# General setup
--#
- CONFIG_LOCALVERSION=""
- # CONFIG_LOCALVERSION_AUTO is not set
- CONFIG_SWAP=y
- CONFIG_SYSVIPC=y
--# CONFIG_IPC_NS is not set
- CONFIG_SYSVIPC_SYSCTL=y
- CONFIG_POSIX_MQUEUE=y
+@@ -37,17 +37,15 @@
  CONFIG_BSD_PROCESS_ACCT=y
  CONFIG_BSD_PROCESS_ACCT_V3=y
  # CONFIG_TASKSTATS is not set
--# CONFIG_UTS_NS is not set
-+# CONFIG_USER_NS is not set
-+# CONFIG_PID_NS is not set
+-# CONFIG_USER_NS is not set
+-# CONFIG_PID_NS is not set
  # CONFIG_AUDIT is not set
  # CONFIG_IKCONFIG is not set
  CONFIG_LOG_BUF_SHIFT=14
-+# CONFIG_CGROUPS is not set
-+CONFIG_FAIR_GROUP_SCHED=y
-+CONFIG_FAIR_USER_SCHED=y
-+# CONFIG_FAIR_CGROUP_SCHED is not set
+ # CONFIG_CGROUPS is not set
+-CONFIG_FAIR_GROUP_SCHED=y
+-CONFIG_FAIR_USER_SCHED=y
+-# CONFIG_FAIR_CGROUP_SCHED is not set
++# CONFIG_GROUP_SCHED is not set
  CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
  # CONFIG_RELAY is not set
++# CONFIG_NAMESPACES is not set
  CONFIG_BLK_DEV_INITRD=y
-@@ -61,35 +67,28 @@
+ CONFIG_INITRAMFS_SOURCE=""
+ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+@@ -61,11 +59,13 @@
+ CONFIG_PRINTK=y
+ CONFIG_BUG=y
+ CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
+ # CONFIG_BASE_FULL is not set
+ CONFIG_FUTEX=y
  CONFIG_ANON_INODES=y
  CONFIG_EPOLL=y
  CONFIG_SIGNALFD=y
--CONFIG_TIMERFD=y
++CONFIG_TIMERFD=y
  CONFIG_EVENTFD=y
  CONFIG_SHMEM=y
  CONFIG_VM_EVENT_COUNTERS=y
--# CONFIG_SLUB_DEBUG is not set
-+CONFIG_SLUB_DEBUG=y
+@@ -73,6 +73,14 @@
  # CONFIG_SLAB is not set
  CONFIG_SLUB=y
  # CONFIG_SLOB is not set
-+CONFIG_SLABINFO=y
++CONFIG_PROFILING=y
++# CONFIG_MARKERS is not set
++CONFIG_OPROFILE=m
++CONFIG_HAVE_OPROFILE=y
++CONFIG_KPROBES=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++CONFIG_PROC_PAGE_MONITOR=y
+ CONFIG_SLABINFO=y
  CONFIG_RT_MUTEXES=y
  # CONFIG_TINY_SHMEM is not set
- CONFIG_BASE_SMALL=1
--
--#
--# Loadable module support
--#
- CONFIG_MODULES=y
- CONFIG_MODULE_UNLOAD=y
- CONFIG_MODULE_FORCE_UNLOAD=y
- # CONFIG_MODVERSIONS is not set
- # CONFIG_MODULE_SRCVERSION_ALL is not set
- CONFIG_KMOD=y
--
--#
--# Block layer
--#
- CONFIG_BLOCK=y
- # CONFIG_LBD is not set
- # CONFIG_BLK_DEV_IO_TRACE is not set
- # CONFIG_LSF is not set
-+# CONFIG_BLK_DEV_BSG is not set
+@@ -101,10 +109,15 @@
+ CONFIG_DEFAULT_CFQ=y
+ # CONFIG_DEFAULT_NOOP is not set
+ CONFIG_DEFAULT_IOSCHED="cfq"
++CONFIG_CLASSIC_RCU=y
  
  #
- # IO Schedulers
-@@ -107,21 +106,28 @@
- #
  # System Type and features
  #
 +CONFIG_TICK_ONESHOT=y
@@ -1051,8 +943,7 @@
  CONFIG_SUBARCH_AVR32B=y
  CONFIG_MMU=y
  CONFIG_PERFORMANCE_COUNTERS=y
- CONFIG_PLATFORM_AT32AP=y
-+CONFIG_CPU_AT32AP700X=y
+@@ -113,6 +126,7 @@
  CONFIG_CPU_AT32AP7000=y
  # CONFIG_BOARD_ATSTK1000 is not set
  CONFIG_BOARD_ATNGW100=y
@@ -1060,226 +951,234 @@
  CONFIG_LOADER_U_BOOT=y
  
  #
- # Atmel AVR32 AP options
- #
--# CONFIG_AP7000_32_BIT_SMC is not set
--CONFIG_AP7000_16_BIT_SMC=y
--# CONFIG_AP7000_8_BIT_SMC is not set
-+# CONFIG_AP700X_32_BIT_SMC is not set
-+CONFIG_AP700X_16_BIT_SMC=y
-+# CONFIG_AP700X_8_BIT_SMC is not set
+@@ -121,6 +135,7 @@
+ # CONFIG_AP700X_32_BIT_SMC is not set
+ CONFIG_AP700X_16_BIT_SMC=y
+ # CONFIG_AP700X_8_BIT_SMC is not set
 +CONFIG_GPIO_DEV=y
  CONFIG_LOAD_ADDRESS=0x10000000
  CONFIG_ENTRY_ADDRESS=0x90000000
  CONFIG_PHYS_OFFSET=0x10000000
-@@ -141,10 +147,14 @@
- CONFIG_FLATMEM=y
- CONFIG_FLAT_NODE_MEM_MAP=y
- # CONFIG_SPARSEMEM_STATIC is not set
-+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
- CONFIG_SPLIT_PTLOCK_CPUS=4
- # CONFIG_RESOURCES_64BIT is not set
+@@ -146,16 +161,26 @@
  CONFIG_ZONE_DMA_FLAG=0
-+CONFIG_VIRT_TO_BUS=y
+ CONFIG_VIRT_TO_BUS=y
  # CONFIG_OWNERSHIP_TRACE is not set
-+# CONFIG_NMI_DEBUGGING is not set
++CONFIG_NMI_DEBUGGING=y
 +CONFIG_DW_DMAC=y
  # CONFIG_HZ_100 is not set
  CONFIG_HZ_250=y
  # CONFIG_HZ_300 is not set
-@@ -153,13 +163,31 @@
+ # CONFIG_HZ_1000 is not set
+ CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
  CONFIG_CMDLINE=""
  
  #
--# Bus options
-+# Power management options
+ # Power management options
  #
--# CONFIG_ARCH_SUPPORTS_MSI is not set
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++CONFIG_PM=y
++# CONFIG_PM_LEGACY is not set
++# CONFIG_PM_DEBUG is not set
++CONFIG_PM_SLEEP=y
++CONFIG_SUSPEND=y
++CONFIG_SUSPEND_FREEZER=y
  
  #
--# PCCARD (PCMCIA/CardBus) support
-+# CPU Frequency scaling
-+#
-+CONFIG_CPU_FREQ=y
-+CONFIG_CPU_FREQ_TABLE=y
-+# CONFIG_CPU_FREQ_DEBUG is not set
-+# CONFIG_CPU_FREQ_STAT is not set
-+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
-+CONFIG_CPU_FREQ_GOV_USERSPACE=y
-+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_AT32AP=y
-+
-+#
-+# Bus options
- #
-+# CONFIG_ARCH_SUPPORTS_MSI is not set
- # CONFIG_PCCARD is not set
- 
- #
-@@ -213,6 +241,7 @@
- CONFIG_INET_XFRM_MODE_TRANSPORT=y
- CONFIG_INET_XFRM_MODE_TUNNEL=y
- CONFIG_INET_XFRM_MODE_BEET=y
-+# CONFIG_INET_LRO is not set
- CONFIG_INET_DIAG=y
- CONFIG_INET_TCP_DIAG=y
- # CONFIG_TCP_CONG_ADVANCED is not set
-@@ -240,6 +269,7 @@
+ # CPU Frequency scaling
+@@ -164,9 +189,9 @@
+ CONFIG_CPU_FREQ_TABLE=y
+ # CONFIG_CPU_FREQ_DEBUG is not set
+ # CONFIG_CPU_FREQ_STAT is not set
+-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
++# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
++CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+ CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+ # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+@@ -202,6 +227,7 @@
+ CONFIG_XFRM_USER=y
+ # CONFIG_XFRM_SUB_POLICY is not set
+ # CONFIG_XFRM_MIGRATE is not set
++# CONFIG_XFRM_STATISTICS is not set
+ CONFIG_NET_KEY=y
+ # CONFIG_NET_KEY_MIGRATE is not set
+ CONFIG_INET=y
+@@ -260,82 +286,33 @@
  # CONFIG_NETWORK_SECMARK is not set
  CONFIG_NETFILTER=y
  # CONFIG_NETFILTER_DEBUG is not set
-+CONFIG_BRIDGE_NETFILTER=y
+-CONFIG_BRIDGE_NETFILTER=y
++# CONFIG_NETFILTER_ADVANCED is not set
  
  #
  # Core Netfilter Configuration
-@@ -252,6 +282,7 @@
- # CONFIG_NF_CONNTRACK_EVENTS is not set
- CONFIG_NF_CT_PROTO_GRE=m
- # CONFIG_NF_CT_PROTO_SCTP is not set
-+# CONFIG_NF_CT_PROTO_UDPLITE is not set
- CONFIG_NF_CONNTRACK_AMANDA=m
+ #
+-# CONFIG_NETFILTER_NETLINK is not set
+-CONFIG_NF_CONNTRACK_ENABLED=m
++CONFIG_NETFILTER_NETLINK=m
++CONFIG_NETFILTER_NETLINK_LOG=m
+ CONFIG_NF_CONNTRACK=m
+-CONFIG_NF_CT_ACCT=y
+-CONFIG_NF_CONNTRACK_MARK=y
+-# CONFIG_NF_CONNTRACK_EVENTS is not set
+-CONFIG_NF_CT_PROTO_GRE=m
+-# CONFIG_NF_CT_PROTO_SCTP is not set
+-# CONFIG_NF_CT_PROTO_UDPLITE is not set
+-CONFIG_NF_CONNTRACK_AMANDA=m
  CONFIG_NF_CONNTRACK_FTP=m
- CONFIG_NF_CONNTRACK_H323=m
-@@ -269,9 +300,11 @@
- CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
+-CONFIG_NF_CONNTRACK_H323=m
+ CONFIG_NF_CONNTRACK_IRC=m
+-CONFIG_NF_CONNTRACK_NETBIOS_NS=m
+-CONFIG_NF_CONNTRACK_PPTP=m
+-CONFIG_NF_CONNTRACK_SANE=m
+ CONFIG_NF_CONNTRACK_SIP=m
+-CONFIG_NF_CONNTRACK_TFTP=m
++CONFIG_NF_CT_NETLINK=m
+ CONFIG_NETFILTER_XTABLES=y
+-CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
+-# CONFIG_NETFILTER_XT_TARGET_CONNMARK is not set
+-# CONFIG_NETFILTER_XT_TARGET_DSCP is not set
+ CONFIG_NETFILTER_XT_TARGET_MARK=m
+-CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
  CONFIG_NETFILTER_XT_TARGET_NFLOG=m
- # CONFIG_NETFILTER_XT_TARGET_NOTRACK is not set
-+# CONFIG_NETFILTER_XT_TARGET_TRACE is not set
+-# CONFIG_NETFILTER_XT_TARGET_NOTRACK is not set
+-# CONFIG_NETFILTER_XT_TARGET_TRACE is not set
  CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
- CONFIG_NETFILTER_XT_MATCH_COMMENT=m
- CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
-+# CONFIG_NETFILTER_XT_MATCH_CONNLIMIT is not set
- CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
+-CONFIG_NETFILTER_XT_MATCH_COMMENT=m
+-CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
+-# CONFIG_NETFILTER_XT_MATCH_CONNLIMIT is not set
+-CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
  CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
- # CONFIG_NETFILTER_XT_MATCH_DCCP is not set
-@@ -284,6 +317,7 @@
+-# CONFIG_NETFILTER_XT_MATCH_DCCP is not set
+-# CONFIG_NETFILTER_XT_MATCH_DSCP is not set
+-CONFIG_NETFILTER_XT_MATCH_ESP=m
+-CONFIG_NETFILTER_XT_MATCH_HELPER=m
+-CONFIG_NETFILTER_XT_MATCH_LENGTH=m
+-CONFIG_NETFILTER_XT_MATCH_LIMIT=m
+-CONFIG_NETFILTER_XT_MATCH_MAC=m
  CONFIG_NETFILTER_XT_MATCH_MARK=m
  CONFIG_NETFILTER_XT_MATCH_POLICY=m
- CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
-+# CONFIG_NETFILTER_XT_MATCH_PHYSDEV is not set
- CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
- CONFIG_NETFILTER_XT_MATCH_QUOTA=m
- CONFIG_NETFILTER_XT_MATCH_REALM=m
-@@ -292,6 +326,8 @@
- CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
- CONFIG_NETFILTER_XT_MATCH_STRING=m
- CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
-+# CONFIG_NETFILTER_XT_MATCH_TIME is not set
-+# CONFIG_NETFILTER_XT_MATCH_U32 is not set
- CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
+-CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
+-# CONFIG_NETFILTER_XT_MATCH_PHYSDEV is not set
+-CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
+-CONFIG_NETFILTER_XT_MATCH_QUOTA=m
+-CONFIG_NETFILTER_XT_MATCH_REALM=m
+-# CONFIG_NETFILTER_XT_MATCH_SCTP is not set
+ CONFIG_NETFILTER_XT_MATCH_STATE=m
+-CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
+-CONFIG_NETFILTER_XT_MATCH_STRING=m
+-CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
+-# CONFIG_NETFILTER_XT_MATCH_TIME is not set
+-# CONFIG_NETFILTER_XT_MATCH_U32 is not set
+-CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
+ 
+ #
+ # IP: Netfilter Configuration
+ #
+ CONFIG_NF_CONNTRACK_IPV4=m
+ CONFIG_NF_CONNTRACK_PROC_COMPAT=y
+-# CONFIG_IP_NF_QUEUE is not set
+ CONFIG_IP_NF_IPTABLES=m
+-CONFIG_IP_NF_MATCH_IPRANGE=m
+-CONFIG_IP_NF_MATCH_TOS=m
+-CONFIG_IP_NF_MATCH_RECENT=m
+-CONFIG_IP_NF_MATCH_ECN=m
+-CONFIG_IP_NF_MATCH_AH=m
+-CONFIG_IP_NF_MATCH_TTL=m
+-CONFIG_IP_NF_MATCH_OWNER=m
+-CONFIG_IP_NF_MATCH_ADDRTYPE=m
+ CONFIG_IP_NF_FILTER=m
+ CONFIG_IP_NF_TARGET_REJECT=m
+ CONFIG_IP_NF_TARGET_LOG=m
+@@ -343,54 +320,25 @@
+ CONFIG_NF_NAT=m
+ CONFIG_NF_NAT_NEEDED=y
+ CONFIG_IP_NF_TARGET_MASQUERADE=m
+-CONFIG_IP_NF_TARGET_REDIRECT=m
+-CONFIG_IP_NF_TARGET_NETMAP=m
+-CONFIG_IP_NF_TARGET_SAME=m
+-CONFIG_NF_NAT_SNMP_BASIC=m
+-CONFIG_NF_NAT_PROTO_GRE=m
+ CONFIG_NF_NAT_FTP=m
+ CONFIG_NF_NAT_IRC=m
+-CONFIG_NF_NAT_TFTP=m
+-CONFIG_NF_NAT_AMANDA=m
+-CONFIG_NF_NAT_PPTP=m
+-CONFIG_NF_NAT_H323=m
++# CONFIG_NF_NAT_TFTP is not set
++# CONFIG_NF_NAT_AMANDA is not set
++# CONFIG_NF_NAT_PPTP is not set
++# CONFIG_NF_NAT_H323 is not set
+ CONFIG_NF_NAT_SIP=m
+ CONFIG_IP_NF_MANGLE=m
+-CONFIG_IP_NF_TARGET_TOS=m
+-CONFIG_IP_NF_TARGET_ECN=m
+-CONFIG_IP_NF_TARGET_TTL=m
+-CONFIG_IP_NF_TARGET_CLUSTERIP=m
+-CONFIG_IP_NF_RAW=m
+-CONFIG_IP_NF_ARPTABLES=m
+-CONFIG_IP_NF_ARPFILTER=m
+-CONFIG_IP_NF_ARP_MANGLE=m
  
  #
-@@ -359,13 +395,19 @@
+-# IPv6: Netfilter Configuration (EXPERIMENTAL)
++# IPv6: Netfilter Configuration
+ #
+ CONFIG_NF_CONNTRACK_IPV6=m
+-CONFIG_IP6_NF_QUEUE=m
+ CONFIG_IP6_NF_IPTABLES=m
+-CONFIG_IP6_NF_MATCH_RT=m
+-CONFIG_IP6_NF_MATCH_OPTS=m
+-CONFIG_IP6_NF_MATCH_FRAG=m
+-CONFIG_IP6_NF_MATCH_HL=m
+-CONFIG_IP6_NF_MATCH_OWNER=m
+ CONFIG_IP6_NF_MATCH_IPV6HEADER=m
+-CONFIG_IP6_NF_MATCH_AH=m
+-CONFIG_IP6_NF_MATCH_MH=m
+-CONFIG_IP6_NF_MATCH_EUI64=m
+ CONFIG_IP6_NF_FILTER=m
+ CONFIG_IP6_NF_TARGET_LOG=m
+ CONFIG_IP6_NF_TARGET_REJECT=m
  CONFIG_IP6_NF_MANGLE=m
- CONFIG_IP6_NF_TARGET_HL=m
- CONFIG_IP6_NF_RAW=m
-+
-+#
-+# Bridge: Netfilter Configuration
-+#
-+# CONFIG_BRIDGE_NF_EBTABLES is not set
+-CONFIG_IP6_NF_TARGET_HL=m
+-CONFIG_IP6_NF_RAW=m
+-
+-#
+-# Bridge: Netfilter Configuration
+-#
+-# CONFIG_BRIDGE_NF_EBTABLES is not set
  # CONFIG_IP_DCCP is not set
  # CONFIG_IP_SCTP is not set
  # CONFIG_TIPC is not set
- # CONFIG_ATM is not set
--# CONFIG_BRIDGE is not set
-+CONFIG_BRIDGE=m
- CONFIG_VLAN_8021Q=m
- # CONFIG_DECNET is not set
-+CONFIG_LLC=m
- # CONFIG_LLC2 is not set
- # CONFIG_IPX is not set
- # CONFIG_ATALK is not set
-@@ -373,10 +415,6 @@
- # CONFIG_LAPB is not set
+@@ -407,7 +355,6 @@
  # CONFIG_ECONET is not set
  # CONFIG_WAN_ROUTER is not set
--
--#
--# QoS and/or fair queueing
--#
  # CONFIG_NET_SCHED is not set
- CONFIG_NET_CLS_ROUTE=y
+-CONFIG_NET_CLS_ROUTE=y
  
-@@ -384,6 +422,7 @@
- # Network testing
  #
+ # Network testing
+@@ -415,6 +362,7 @@
  # CONFIG_NET_PKTGEN is not set
-+# CONFIG_NET_TCPPROBE is not set
+ # CONFIG_NET_TCPPROBE is not set
  # CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
  # CONFIG_IRDA is not set
  # CONFIG_BT is not set
-@@ -397,6 +436,7 @@
- # CONFIG_MAC80211 is not set
- # CONFIG_IEEE80211 is not set
- # CONFIG_RFKILL is not set
-+# CONFIG_NET_9P is not set
- 
- #
- # Device Drivers
-@@ -405,16 +445,13 @@
- #
- # Generic Driver Options
- #
-+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
- CONFIG_STANDALONE=y
- # CONFIG_PREVENT_FIRMWARE_BUILD is not set
- # CONFIG_FW_LOADER is not set
- # CONFIG_DEBUG_DRIVER is not set
- # CONFIG_DEBUG_DEVRES is not set
- # CONFIG_SYS_HYPERVISOR is not set
--
--#
--# Connector - unified userspace <-> kernelspace linker
--#
- # CONFIG_CONNECTOR is not set
- CONFIG_MTD=y
- # CONFIG_MTD_DEBUG is not set
-@@ -434,6 +471,7 @@
- # CONFIG_INFTL is not set
- # CONFIG_RFD_FTL is not set
- # CONFIG_SSFDC is not set
-+# CONFIG_MTD_OOPS is not set
- 
- #
- # RAM/ROM/Flash chip drivers
-@@ -493,20 +531,8 @@
- # UBI - Unsorted block images
- #
- # CONFIG_MTD_UBI is not set
--
--#
--# Parallel port support
--#
- # CONFIG_PARPORT is not set
--
--#
--# Plug and Play support
--#
--# CONFIG_PNPACPI is not set
--
--#
--# Block devices
--#
-+CONFIG_BLK_DEV=y
- # CONFIG_BLK_DEV_COW_COMMON is not set
- CONFIG_BLK_DEV_LOOP=m
- # CONFIG_BLK_DEV_CRYPTOLOOP is not set
-@@ -517,11 +543,13 @@
- CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
+ # CONFIG_AF_RXRPC is not set
+@@ -531,11 +479,18 @@
+ CONFIG_BLK_DEV_RAM=m
+ CONFIG_BLK_DEV_RAM_COUNT=16
+ CONFIG_BLK_DEV_RAM_SIZE=4096
+-CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
++# CONFIG_BLK_DEV_XIP is not set
  # CONFIG_CDROM_PKTCDVD is not set
  # CONFIG_ATA_OVER_ETH is not set
--
--#
--# Misc devices
--#
--# CONFIG_BLINK is not set
+-# CONFIG_MISC_DEVICES is not set
+-# CONFIG_IDE is not set
 +CONFIG_MISC_DEVICES=y
 +# CONFIG_ATMEL_PWM is not set
 +CONFIG_ATMEL_TCLIB=y
@@ -1287,87 +1186,34 @@
 +CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
 +# CONFIG_EEPROM_93CX6 is not set
 +# CONFIG_ATMEL_SSC is not set
- # CONFIG_IDE is not set
- 
- #
-@@ -529,30 +557,42 @@
- #
- # CONFIG_RAID_ATTRS is not set
- # CONFIG_SCSI is not set
-+# CONFIG_SCSI_DMA is not set
- # CONFIG_SCSI_NETLINK is not set
- # CONFIG_ATA is not set
--
--#
--# Multi-device support (RAID and LVM)
--#
- # CONFIG_MD is not set
--
--#
--# Network device support
--#
- CONFIG_NETDEVICES=y
-+# CONFIG_NETDEVICES_MULTIQUEUE is not set
- # CONFIG_DUMMY is not set
- # CONFIG_BONDING is not set
-+# CONFIG_MACVLAN is not set
- # CONFIG_EQUALIZER is not set
- CONFIG_TUN=m
--# CONFIG_PHYLIB is not set
-+# CONFIG_VETH is not set
-+CONFIG_PHYLIB=y
++# CONFIG_ENCLOSURE_SERVICES is not set
++# CONFIG_HAVE_IDE is not set
  
  #
--# Ethernet (10 or 100Mbit)
-+# MII PHY device drivers
- #
-+# CONFIG_MARVELL_PHY is not set
-+# CONFIG_DAVICOM_PHY is not set
-+# CONFIG_QSEMI_PHY is not set
-+# CONFIG_LXT_PHY is not set
-+# CONFIG_CICADA_PHY is not set
-+# CONFIG_VITESSE_PHY is not set
-+# CONFIG_SMSC_PHY is not set
-+# CONFIG_BROADCOM_PHY is not set
-+# CONFIG_ICPLUS_PHY is not set
-+# CONFIG_FIXED_PHY is not set
-+# CONFIG_MDIO_BITBANG is not set
+ # SCSI device support
+@@ -568,11 +523,13 @@
+ # CONFIG_SMSC_PHY is not set
+ # CONFIG_BROADCOM_PHY is not set
+ # CONFIG_ICPLUS_PHY is not set
++# CONFIG_REALTEK_PHY is not set
+ # CONFIG_FIXED_PHY is not set
+ # CONFIG_MDIO_BITBANG is not set
  CONFIG_NET_ETHERNET=y
--CONFIG_MII=y
-+# CONFIG_MII is not set
+ # CONFIG_MII is not set
  CONFIG_MACB=y
-+# CONFIG_IBM_NEW_EMAC_ZMII is not set
-+# CONFIG_IBM_NEW_EMAC_RGMII is not set
-+# CONFIG_IBM_NEW_EMAC_TAH is not set
-+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
-+# CONFIG_B44 is not set
- # CONFIG_NETDEV_1000 is not set
- # CONFIG_NETDEV_10000 is not set
- 
-@@ -571,21 +611,14 @@
- CONFIG_PPP_BSDCOMP=m
- CONFIG_PPP_MPPE=m
- CONFIG_PPPOE=m
-+# CONFIG_PPPOL2TP is not set
++# CONFIG_ENC28J60 is not set
+ # CONFIG_IBM_NEW_EMAC_ZMII is not set
+ # CONFIG_IBM_NEW_EMAC_RGMII is not set
+ # CONFIG_IBM_NEW_EMAC_TAH is not set
+@@ -599,7 +556,6 @@
+ # CONFIG_PPPOL2TP is not set
  # CONFIG_SLIP is not set
  CONFIG_SLHC=m
- # CONFIG_SHAPER is not set
+-# CONFIG_SHAPER is not set
  # CONFIG_NETCONSOLE is not set
  # CONFIG_NETPOLL is not set
  # CONFIG_NET_POLL_CONTROLLER is not set
--
--#
--# ISDN subsystem
--#
- # CONFIG_ISDN is not set
--
--#
--# Telephony Support
--#
- # CONFIG_PHONE is not set
- 
- #
-@@ -615,28 +648,57 @@
+@@ -633,6 +589,7 @@
  #
  CONFIG_SERIAL_ATMEL=y
  CONFIG_SERIAL_ATMEL_CONSOLE=y
@@ -1375,592 +1221,338 @@
  # CONFIG_SERIAL_ATMEL_TTYAT is not set
  CONFIG_SERIAL_CORE=y
  CONFIG_SERIAL_CORE_CONSOLE=y
- CONFIG_UNIX98_PTYS=y
+@@ -640,8 +597,6 @@
  # CONFIG_LEGACY_PTYS is not set
--
--#
--# IPMI
--#
  # CONFIG_IPMI_HANDLER is not set
--# CONFIG_WATCHDOG is not set
  # CONFIG_HW_RANDOM is not set
- # CONFIG_RTC is not set
- # CONFIG_GEN_RTC is not set
+-# CONFIG_RTC is not set
+-# CONFIG_GEN_RTC is not set
  # CONFIG_R3964 is not set
  # CONFIG_RAW_DRIVER is not set
--
--#
--# TPM devices
--#
  # CONFIG_TCG_TPM is not set
--# CONFIG_I2C is not set
-+CONFIG_I2C=m
-+CONFIG_I2C_BOARDINFO=y
-+CONFIG_I2C_CHARDEV=m
+@@ -659,6 +614,7 @@
+ #
+ # I2C Hardware Bus support
+ #
++CONFIG_I2C_ATMELTWI=m
+ CONFIG_I2C_GPIO=m
+ # CONFIG_I2C_OCORES is not set
+ # CONFIG_I2C_PARPORT_LIGHT is not set
+@@ -669,13 +625,12 @@
+ #
+ # Miscellaneous I2C Chip support
+ #
+-# CONFIG_SENSORS_DS1337 is not set
+-# CONFIG_SENSORS_DS1374 is not set
+ # CONFIG_DS1682 is not set
+ # CONFIG_SENSORS_EEPROM is not set
+ # CONFIG_SENSORS_PCF8574 is not set
+-# CONFIG_SENSORS_PCA9539 is not set
++# CONFIG_PCF8575 is not set
+ # CONFIG_SENSORS_PCF8591 is not set
++# CONFIG_TPS65010 is not set
+ # CONFIG_SENSORS_MAX6875 is not set
+ # CONFIG_SENSORS_TSL2550 is not set
+ # CONFIG_I2C_DEBUG_CORE is not set
+@@ -702,9 +657,27 @@
+ # CONFIG_SPI_AT25 is not set
+ CONFIG_SPI_SPIDEV=m
+ # CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
 +
 +#
-+# I2C Algorithms
++# GPIO Support
 +#
-+CONFIG_I2C_ALGOBIT=m
-+# CONFIG_I2C_ALGOPCF is not set
-+# CONFIG_I2C_ALGOPCA is not set
++# CONFIG_DEBUG_GPIO is not set
 +
 +#
-+# I2C Hardware Bus support
++# I2C GPIO expanders:
 +#
-+CONFIG_I2C_ATMELTWI=m
-+CONFIG_I2C_GPIO=m
-+# CONFIG_I2C_OCORES is not set
-+# CONFIG_I2C_PARPORT_LIGHT is not set
-+# CONFIG_I2C_SIMTEC is not set
-+# CONFIG_I2C_TAOS_EVM is not set
-+# CONFIG_I2C_STUB is not set
-+
-+#
-+# Miscellaneous I2C Chip support
-+#
-+# CONFIG_SENSORS_DS1337 is not set
-+# CONFIG_SENSORS_DS1374 is not set
-+# CONFIG_DS1682 is not set
-+# CONFIG_SENSORS_EEPROM is not set
-+# CONFIG_SENSORS_PCF8574 is not set
-+# CONFIG_SENSORS_PCA9539 is not set
-+# CONFIG_SENSORS_PCF8591 is not set
-+# CONFIG_SENSORS_MAX6875 is not set
-+# CONFIG_SENSORS_TSL2550 is not set
-+# CONFIG_I2C_DEBUG_CORE is not set
-+# CONFIG_I2C_DEBUG_ALGO is not set
-+# CONFIG_I2C_DEBUG_BUS is not set
-+# CONFIG_I2C_DEBUG_CHIP is not set
- 
- #
- # SPI support
-@@ -655,13 +717,25 @@
- # SPI Protocol Masters
- #
- # CONFIG_SPI_AT25 is not set
--# CONFIG_SPI_SPIDEV is not set
-+CONFIG_SPI_SPIDEV=m
-+# CONFIG_SPI_TLE62X0 is not set
-+# CONFIG_W1 is not set
-+# CONFIG_POWER_SUPPLY is not set
-+# CONFIG_HWMON is not set
-+CONFIG_WATCHDOG=y
-+# CONFIG_WATCHDOG_NOWAYOUT is not set
- 
- #
--# Dallas's 1-wire bus
-+# Watchdog Device Drivers
- #
--# CONFIG_W1 is not set
--# CONFIG_HWMON is not set
-+# CONFIG_SOFT_WATCHDOG is not set
-+CONFIG_AT32AP700X_WDT=y
++# CONFIG_GPIO_PCA953X is not set
++# CONFIG_GPIO_PCF857X is not set
 +
 +#
-+# Sonics Silicon Backplane
++# SPI GPIO expanders:
 +#
-+CONFIG_SSB_POSSIBLE=y
-+# CONFIG_SSB is not set
- 
- #
- # Multifunction device drivers
-@@ -678,23 +752,21 @@
- #
- # Graphics support
- #
-+# CONFIG_VGASTATE is not set
-+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
-+# CONFIG_FB is not set
- # CONFIG_BACKLIGHT_LCD_SUPPORT is not set
- 
- #
- # Display device support
- #
- # CONFIG_DISPLAY_SUPPORT is not set
--# CONFIG_VGASTATE is not set
--# CONFIG_FB is not set
++# CONFIG_GPIO_MCP23S08 is not set
+ # CONFIG_W1 is not set
+ # CONFIG_POWER_SUPPLY is not set
+ # CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
+ CONFIG_WATCHDOG=y
+ # CONFIG_WATCHDOG_NOWAYOUT is not set
  
+@@ -757,10 +730,6 @@
  #
- # Sound
+ # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
  #
- # CONFIG_SOUND is not set
 -
 -#
--# USB support
+-# USB Gadget Support
 -#
-+CONFIG_USB_SUPPORT=y
- # CONFIG_USB_ARCH_HAS_HCD is not set
- # CONFIG_USB_ARCH_HAS_OHCI is not set
- # CONFIG_USB_ARCH_HAS_EHCI is not set
-@@ -706,12 +778,48 @@
+ CONFIG_USB_GADGET=y
+ # CONFIG_USB_GADGET_DEBUG is not set
+ # CONFIG_USB_GADGET_DEBUG_FILES is not set
+@@ -787,21 +756,24 @@
+ # CONFIG_USB_FILE_STORAGE_TEST is not set
+ CONFIG_USB_G_SERIAL=m
+ # CONFIG_USB_MIDI_GADGET is not set
+-CONFIG_MMC=m
++# CONFIG_USB_G_PRINTER is not set
++CONFIG_MMC=y
+ # CONFIG_MMC_DEBUG is not set
+ # CONFIG_MMC_UNSAFE_RESUME is not set
+ 
  #
- # USB Gadget Support
+ # MMC/SD Card Drivers
  #
--# CONFIG_USB_GADGET is not set
--# CONFIG_MMC is not set
-+CONFIG_USB_GADGET=y
-+# CONFIG_USB_GADGET_DEBUG is not set
-+# CONFIG_USB_GADGET_DEBUG_FILES is not set
-+CONFIG_USB_GADGET_SELECTED=y
-+# CONFIG_USB_GADGET_AMD5536UDC is not set
-+CONFIG_USB_GADGET_ATMEL_USBA=y
-+CONFIG_USB_ATMEL_USBA=y
-+# CONFIG_USB_GADGET_FSL_USB2 is not set
-+# CONFIG_USB_GADGET_NET2280 is not set
-+# CONFIG_USB_GADGET_PXA2XX is not set
-+# CONFIG_USB_GADGET_M66592 is not set
-+# CONFIG_USB_GADGET_GOKU is not set
-+# CONFIG_USB_GADGET_LH7A40X is not set
-+# CONFIG_USB_GADGET_OMAP is not set
-+# CONFIG_USB_GADGET_S3C2410 is not set
-+# CONFIG_USB_GADGET_AT91 is not set
-+# CONFIG_USB_GADGET_DUMMY_HCD is not set
-+CONFIG_USB_GADGET_DUALSPEED=y
-+CONFIG_USB_ZERO=m
-+CONFIG_USB_ETH=m
-+CONFIG_USB_ETH_RNDIS=y
-+CONFIG_USB_GADGETFS=m
-+CONFIG_USB_FILE_STORAGE=m
-+# CONFIG_USB_FILE_STORAGE_TEST is not set
-+CONFIG_USB_G_SERIAL=m
-+# CONFIG_USB_MIDI_GADGET is not set
-+CONFIG_MMC=y
-+# CONFIG_MMC_DEBUG is not set
-+# CONFIG_MMC_UNSAFE_RESUME is not set
-+
-+#
-+# MMC/SD Card Drivers
-+#
+-CONFIG_MMC_BLOCK=m
 +CONFIG_MMC_BLOCK=y
-+# CONFIG_MMC_BLOCK_BOUNCE is not set
-+# CONFIG_SDIO_UART is not set
+ CONFIG_MMC_BLOCK_BOUNCE=y
+ # CONFIG_SDIO_UART is not set
  
  #
--# LED devices
-+# MMC/SD Host Controller Drivers
+ # MMC/SD Host Controller Drivers
  #
 +CONFIG_MMC_ATMELMCI=y
-+CONFIG_MMC_SPI=m
+ CONFIG_MMC_SPI=m
++# CONFIG_MEMSTICK is not set
  CONFIG_NEW_LEDS=y
  CONFIG_LEDS_CLASS=y
  
-@@ -726,53 +834,71 @@
- CONFIG_LEDS_TRIGGERS=y
- CONFIG_LEDS_TRIGGER_TIMER=y
- CONFIG_LEDS_TRIGGER_HEARTBEAT=y
--
-+CONFIG_RTC_LIB=y
-+CONFIG_RTC_CLASS=y
-+CONFIG_RTC_HCTOSYS=y
-+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
-+# CONFIG_RTC_DEBUG is not set
+@@ -844,19 +816,22 @@
+ # CONFIG_RTC_DRV_PCF8563 is not set
+ # CONFIG_RTC_DRV_PCF8583 is not set
+ # CONFIG_RTC_DRV_M41T80 is not set
++# CONFIG_RTC_DRV_S35390A is not set
  
  #
--# LED drivers
--#
--
--#
--# LED Triggers
--#
--
--#
--# InfiniBand support
-+# RTC interfaces
- #
-+CONFIG_RTC_INTF_SYSFS=y
-+CONFIG_RTC_INTF_PROC=y
-+CONFIG_RTC_INTF_DEV=y
-+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
-+# CONFIG_RTC_DRV_TEST is not set
- 
- #
--# EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
-+# I2C RTC drivers
+ # SPI RTC drivers
  #
-+# CONFIG_RTC_DRV_DS1307 is not set
-+# CONFIG_RTC_DRV_DS1374 is not set
-+# CONFIG_RTC_DRV_DS1672 is not set
-+# CONFIG_RTC_DRV_MAX6900 is not set
-+# CONFIG_RTC_DRV_RS5C372 is not set
-+# CONFIG_RTC_DRV_ISL1208 is not set
-+# CONFIG_RTC_DRV_X1205 is not set
-+# CONFIG_RTC_DRV_PCF8563 is not set
-+# CONFIG_RTC_DRV_PCF8583 is not set
-+# CONFIG_RTC_DRV_M41T80 is not set
- 
- #
--# Real Time Clock
-+# SPI RTC drivers
- #
--# CONFIG_RTC_CLASS is not set
+-# CONFIG_RTC_DRV_RS5C348 is not set
+ # CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
 +# CONFIG_RTC_DRV_RS5C348 is not set
-+# CONFIG_RTC_DRV_MAX6902 is not set
  
  #
--# DMA Engine support
-+# Platform RTC drivers
+ # Platform RTC drivers
  #
--# CONFIG_DMA_ENGINE is not set
-+# CONFIG_RTC_DRV_DS1553 is not set
++# CONFIG_RTC_DRV_DS1511 is not set
+ # CONFIG_RTC_DRV_DS1553 is not set
+-# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_DS1742 is not set
 +# CONFIG_RTC_DRV_STK17TA8 is not set
-+# CONFIG_RTC_DRV_DS1742 is not set
-+# CONFIG_RTC_DRV_M48T86 is not set
-+# CONFIG_RTC_DRV_M48T59 is not set
-+# CONFIG_RTC_DRV_V3020 is not set
- 
- #
--# DMA Clients
-+# on-CPU RTC drivers
- #
-+CONFIG_RTC_DRV_AT32AP700X=y
- 
- #
--# DMA Devices
-+# Userspace I/O
- #
-+# CONFIG_UIO is not set
- 
+ # CONFIG_RTC_DRV_M48T86 is not set
+ # CONFIG_RTC_DRV_M48T59 is not set
+ # CONFIG_RTC_DRV_V3020 is not set
+@@ -874,25 +849,23 @@
  #
  # File systems
  #
--CONFIG_EXT2_FS=y
-+CONFIG_EXT2_FS=m
+-CONFIG_EXT2_FS=m
++CONFIG_EXT2_FS=y
  # CONFIG_EXT2_FS_XATTR is not set
  # CONFIG_EXT2_FS_XIP is not set
--CONFIG_EXT3_FS=y
-+CONFIG_EXT3_FS=m
+-CONFIG_EXT3_FS=m
++CONFIG_EXT3_FS=y
  # CONFIG_EXT3_FS_XATTR is not set
  # CONFIG_EXT4DEV_FS is not set
--CONFIG_JBD=y
--# CONFIG_JBD_DEBUG is not set
-+CONFIG_JBD=m
+-CONFIG_JBD=m
++CONFIG_JBD=y
  # CONFIG_REISERFS_FS is not set
  # CONFIG_JFS_FS is not set
  # CONFIG_FS_POSIX_ACL is not set
-@@ -781,7 +907,8 @@
+ # CONFIG_XFS_FS is not set
+ # CONFIG_GFS2_FS is not set
  # CONFIG_OCFS2_FS is not set
- # CONFIG_MINIX_FS is not set
- # CONFIG_ROMFS_FS is not set
--# CONFIG_INOTIFY is not set
-+CONFIG_INOTIFY=y
-+CONFIG_INOTIFY_USER=y
+-# CONFIG_MINIX_FS is not set
+-# CONFIG_ROMFS_FS is not set
++# CONFIG_DNOTIFY is not set
+ CONFIG_INOTIFY=y
+ CONFIG_INOTIFY_USER=y
  # CONFIG_QUOTA is not set
- # CONFIG_DNOTIFY is not set
+-# CONFIG_DNOTIFY is not set
  # CONFIG_AUTOFS_FS is not set
-@@ -814,7 +941,6 @@
+ # CONFIG_AUTOFS4_FS is not set
+ CONFIG_FUSE_FS=m
+@@ -923,7 +896,7 @@
  CONFIG_TMPFS=y
  # CONFIG_TMPFS_POSIX_ACL is not set
  # CONFIG_HUGETLB_PAGE is not set
--CONFIG_RAMFS=y
- CONFIG_CONFIGFS_FS=y
+-CONFIG_CONFIGFS_FS=m
++CONFIG_CONFIGFS_FS=y
  
  #
-@@ -830,10 +956,12 @@
- CONFIG_JFFS2_FS=y
- CONFIG_JFFS2_FS_DEBUG=0
- CONFIG_JFFS2_FS_WRITEBUFFER=y
-+# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
- # CONFIG_JFFS2_SUMMARY is not set
- # CONFIG_JFFS2_FS_XATTR is not set
- # CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
- CONFIG_JFFS2_ZLIB=y
-+# CONFIG_JFFS2_LZO is not set
- CONFIG_JFFS2_RTIME=y
+ # Miscellaneous filesystems
+@@ -948,8 +921,10 @@
  # CONFIG_JFFS2_RUBIN is not set
  # CONFIG_CRAMFS is not set
-@@ -842,19 +970,21 @@
+ # CONFIG_VXFS_FS is not set
++# CONFIG_MINIX_FS is not set
+ # CONFIG_HPFS_FS is not set
  # CONFIG_QNX4FS_FS is not set
++# CONFIG_ROMFS_FS is not set
  # CONFIG_SYSV_FS is not set
  # CONFIG_UFS_FS is not set
--
--#
--# Network File Systems
--#
-+CONFIG_NETWORK_FILESYSTEMS=y
- CONFIG_NFS_FS=y
- CONFIG_NFS_V3=y
- # CONFIG_NFS_V3_ACL is not set
- # CONFIG_NFS_V4 is not set
- # CONFIG_NFS_DIRECTIO is not set
--# CONFIG_NFSD is not set
-+CONFIG_NFSD=m
-+CONFIG_NFSD_V3=y
-+# CONFIG_NFSD_V3_ACL is not set
-+# CONFIG_NFSD_V4 is not set
-+CONFIG_NFSD_TCP=y
- CONFIG_ROOT_NFS=y
- CONFIG_LOCKD=y
- CONFIG_LOCKD_V4=y
-+CONFIG_EXPORTFS=m
- CONFIG_NFS_COMMON=y
- CONFIG_SUNRPC=y
- # CONFIG_SUNRPC_BIND34 is not set
-@@ -871,23 +1001,18 @@
- # CONFIG_NCP_FS is not set
- # CONFIG_CODA_FS is not set
- # CONFIG_AFS_FS is not set
--# CONFIG_9P_FS is not set
- 
- #
- # Partition Types
- #
- # CONFIG_PARTITION_ADVANCED is not set
- CONFIG_MSDOS_PARTITION=y
--
--#
--# Native Language Support
--#
--CONFIG_NLS=y
-+CONFIG_NLS=m
- CONFIG_NLS_DEFAULT="iso8859-1"
--# CONFIG_NLS_CODEPAGE_437 is not set
-+CONFIG_NLS_CODEPAGE_437=m
- # CONFIG_NLS_CODEPAGE_737 is not set
- # CONFIG_NLS_CODEPAGE_775 is not set
--CONFIG_NLS_CODEPAGE_850=y
-+CONFIG_NLS_CODEPAGE_850=m
- # CONFIG_NLS_CODEPAGE_852 is not set
- # CONFIG_NLS_CODEPAGE_855 is not set
- # CONFIG_NLS_CODEPAGE_857 is not set
-@@ -908,7 +1033,7 @@
- # CONFIG_NLS_CODEPAGE_1250 is not set
- # CONFIG_NLS_CODEPAGE_1251 is not set
- # CONFIG_NLS_ASCII is not set
--CONFIG_NLS_ISO8859_1=y
-+CONFIG_NLS_ISO8859_1=m
- # CONFIG_NLS_ISO8859_2 is not set
- # CONFIG_NLS_ISO8859_3 is not set
- # CONFIG_NLS_ISO8859_4 is not set
-@@ -921,18 +1046,19 @@
- # CONFIG_NLS_ISO8859_15 is not set
- # CONFIG_NLS_KOI8_R is not set
+ CONFIG_NETWORK_FILESYSTEMS=y
+@@ -1030,11 +1005,6 @@
  # CONFIG_NLS_KOI8_U is not set
--CONFIG_NLS_UTF8=y
--
--#
--# Distributed Lock Manager
--#
-+CONFIG_NLS_UTF8=m
+ CONFIG_NLS_UTF8=m
  # CONFIG_DLM is not set
-+CONFIG_INSTRUMENTATION=y
-+CONFIG_PROFILING=y
-+CONFIG_OPROFILE=m
-+CONFIG_KPROBES=y
-+# CONFIG_MARKERS is not set
+-CONFIG_INSTRUMENTATION=y
+-CONFIG_PROFILING=y
+-CONFIG_OPROFILE=m
+-CONFIG_KPROBES=y
+-# CONFIG_MARKERS is not set
  
  #
  # Kernel hacking
- #
--CONFIG_TRACE_IRQFLAGS_SUPPORT=y
- # CONFIG_PRINTK_TIME is not set
-+CONFIG_ENABLE_WARN_DEPRECATED=y
- CONFIG_ENABLE_MUST_CHECK=y
- CONFIG_MAGIC_SYSRQ=y
- # CONFIG_UNUSED_SYMBOLS is not set
-@@ -941,12 +1067,17 @@
- CONFIG_DEBUG_KERNEL=y
- # CONFIG_DEBUG_SHIRQ is not set
- CONFIG_DETECT_SOFTLOCKUP=y
-+CONFIG_SCHED_DEBUG=y
+@@ -1053,6 +1023,7 @@
  # CONFIG_SCHEDSTATS is not set
  # CONFIG_TIMER_STATS is not set
-+# CONFIG_SLUB_DEBUG_ON is not set
+ # CONFIG_SLUB_DEBUG_ON is not set
++# CONFIG_SLUB_STATS is not set
  # CONFIG_DEBUG_RT_MUTEXES is not set
  # CONFIG_RT_MUTEX_TESTER is not set
  # CONFIG_DEBUG_SPINLOCK is not set
- # CONFIG_DEBUG_MUTEXES is not set
-+# CONFIG_DEBUG_LOCK_ALLOC is not set
-+# CONFIG_PROVE_LOCKING is not set
-+# CONFIG_LOCK_STAT is not set
- # CONFIG_DEBUG_SPINLOCK_SLEEP is not set
- # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
- # CONFIG_DEBUG_KOBJECT is not set
-@@ -954,21 +1085,21 @@
- # CONFIG_DEBUG_INFO is not set
- # CONFIG_DEBUG_VM is not set
+@@ -1069,9 +1040,10 @@
  # CONFIG_DEBUG_LIST is not set
-+# CONFIG_DEBUG_SG is not set
+ # CONFIG_DEBUG_SG is not set
  CONFIG_FRAME_POINTER=y
- # CONFIG_FORCED_INLINING is not set
-+# CONFIG_BOOT_PRINTK_DELAY is not set
+-# CONFIG_FORCED_INLINING is not set
+ # CONFIG_BOOT_PRINTK_DELAY is not set
  # CONFIG_RCU_TORTURE_TEST is not set
-+# CONFIG_LKDTM is not set
++# CONFIG_KPROBES_SANITY_TEST is not set
++# CONFIG_BACKTRACE_SELF_TEST is not set
+ # CONFIG_LKDTM is not set
  # CONFIG_FAULT_INJECTION is not set
--# CONFIG_KPROBES is not set
-+# CONFIG_SAMPLES is not set
- 
- #
- # Security options
- #
- # CONFIG_KEYS is not set
- # CONFIG_SECURITY is not set
--
--#
--# Cryptographic options
--#
-+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+ # CONFIG_SAMPLES is not set
+@@ -1084,7 +1056,9 @@
+ # CONFIG_SECURITY_FILE_CAPABILITIES is not set
  CONFIG_CRYPTO=y
  CONFIG_CRYPTO_ALGAPI=y
++CONFIG_CRYPTO_AEAD=y
  CONFIG_CRYPTO_BLKCIPHER=y
-@@ -989,6 +1120,7 @@
- CONFIG_CRYPTO_CBC=y
++# CONFIG_CRYPTO_SEQIV is not set
+ CONFIG_CRYPTO_HASH=y
+ CONFIG_CRYPTO_MANAGER=y
+ CONFIG_CRYPTO_HMAC=y
+@@ -1103,6 +1077,9 @@
  CONFIG_CRYPTO_PCBC=m
  # CONFIG_CRYPTO_LRW is not set
-+# CONFIG_CRYPTO_XTS is not set
+ # CONFIG_CRYPTO_XTS is not set
++# CONFIG_CRYPTO_CTR is not set
++# CONFIG_CRYPTO_GCM is not set
++# CONFIG_CRYPTO_CCM is not set
  # CONFIG_CRYPTO_CRYPTD is not set
  CONFIG_CRYPTO_DES=y
  # CONFIG_CRYPTO_FCRYPT is not set
-@@ -1002,15 +1134,14 @@
- CONFIG_CRYPTO_ARC4=m
+@@ -1117,12 +1094,14 @@
  # CONFIG_CRYPTO_KHAZAD is not set
  # CONFIG_CRYPTO_ANUBIS is not set
-+# CONFIG_CRYPTO_SEED is not set
+ # CONFIG_CRYPTO_SEED is not set
++# CONFIG_CRYPTO_SALSA20 is not set
  CONFIG_CRYPTO_DEFLATE=y
  # CONFIG_CRYPTO_MICHAEL_MIC is not set
  # CONFIG_CRYPTO_CRC32C is not set
  # CONFIG_CRYPTO_CAMELLIA is not set
  # CONFIG_CRYPTO_TEST is not set
--
--#
--# Hardware crypto devices
--#
-+# CONFIG_CRYPTO_AUTHENC is not set
-+CONFIG_CRYPTO_HW=y
+-# CONFIG_CRYPTO_AUTHENC is not set
++CONFIG_CRYPTO_AUTHENC=y
++# CONFIG_CRYPTO_LZO is not set
+ CONFIG_CRYPTO_HW=y
  
  #
- # Library routines
-@@ -1018,8 +1149,9 @@
- CONFIG_BITREVERSE=y
- CONFIG_CRC_CCITT=m
- # CONFIG_CRC16 is not set
--# CONFIG_CRC_ITU_T is not set
-+CONFIG_CRC_ITU_T=m
- CONFIG_CRC32=y
-+CONFIG_CRC7=m
+@@ -1137,10 +1116,7 @@
  # CONFIG_LIBCRC32C is not set
  CONFIG_ZLIB_INFLATE=y
  CONFIG_ZLIB_DEFLATE=y
---- a/arch/avr32/configs/atstk1002_defconfig
-+++ b/arch/avr32/configs/atstk1002_defconfig
-@@ -1,48 +1,49 @@
+-CONFIG_TEXTSEARCH=y
+-CONFIG_TEXTSEARCH_KMP=m
+-CONFIG_TEXTSEARCH_BM=m
+-CONFIG_TEXTSEARCH_FSM=m
++CONFIG_GENERIC_ALLOCATOR=y
+ CONFIG_PLIST=y
+ CONFIG_HAS_IOMEM=y
+ CONFIG_HAS_IOPORT=y
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atstk1002_defconfig avr32-2.6/arch/avr32/configs/atstk1002_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atstk1002_defconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/configs/atstk1002_defconfig	2008-06-12 15:09:38.715815679 +0200
+@@ -1,7 +1,7 @@
  #
  # Automatically generated make config: don't edit
--# Linux kernel version: 2.6.22-rc5
--# Sat Jun 23 15:32:08 2007
-+# Linux kernel version: 2.6.24
-+# Thu Mar  6 12:49:17 2008
+-# Linux kernel version: 2.6.24-rc7
+-# Wed Jan  9 23:07:43 2008
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:29:18 2008
  #
  CONFIG_AVR32=y
  CONFIG_GENERIC_GPIO=y
- CONFIG_GENERIC_HARDIRQS=y
-+CONFIG_STACKTRACE_SUPPORT=y
-+CONFIG_LOCKDEP_SUPPORT=y
-+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
- CONFIG_HARDIRQS_SW_RESEND=y
+@@ -13,10 +13,10 @@
  CONFIG_GENERIC_IRQ_PROBE=y
  CONFIG_RWSEM_GENERIC_SPINLOCK=y
  CONFIG_GENERIC_TIME=y
 +CONFIG_GENERIC_CLOCKEVENTS=y
-+# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+ # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
  # CONFIG_ARCH_HAS_ILOG2_U32 is not set
  # CONFIG_ARCH_HAS_ILOG2_U64 is not set
-+CONFIG_ARCH_SUPPORTS_OPROFILE=y
+-CONFIG_ARCH_SUPPORTS_OPROFILE=y
  CONFIG_GENERIC_HWEIGHT=y
  CONFIG_GENERIC_CALIBRATE_DELAY=y
  CONFIG_GENERIC_BUG=y
- CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
- 
- #
--# Code maturity level options
-+# General setup
- #
- CONFIG_EXPERIMENTAL=y
- CONFIG_BROKEN_ON_SMP=y
- CONFIG_INIT_ENV_ARG_LIMIT=32
--
--#
--# General setup
--#
- CONFIG_LOCALVERSION=""
- # CONFIG_LOCALVERSION_AUTO is not set
- CONFIG_SWAP=y
- CONFIG_SYSVIPC=y
--# CONFIG_IPC_NS is not set
- CONFIG_SYSVIPC_SYSCTL=y
+@@ -36,15 +36,15 @@
  CONFIG_POSIX_MQUEUE=y
--CONFIG_BSD_PROCESS_ACCT=y
--CONFIG_BSD_PROCESS_ACCT_V3=y
--CONFIG_TASKSTATS=y
--CONFIG_TASK_DELAY_ACCT=y
--# CONFIG_TASK_XACCT is not set
--# CONFIG_UTS_NS is not set
--CONFIG_AUDIT=y
-+# CONFIG_BSD_PROCESS_ACCT is not set
-+# CONFIG_TASKSTATS is not set
-+# CONFIG_USER_NS is not set
-+# CONFIG_PID_NS is not set
-+# CONFIG_AUDIT is not set
+ # CONFIG_BSD_PROCESS_ACCT is not set
+ # CONFIG_TASKSTATS is not set
+-# CONFIG_USER_NS is not set
+-# CONFIG_PID_NS is not set
+ # CONFIG_AUDIT is not set
  # CONFIG_IKCONFIG is not set
  CONFIG_LOG_BUF_SHIFT=14
-+# CONFIG_CGROUPS is not set
-+# CONFIG_FAIR_GROUP_SCHED is not set
+ # CONFIG_CGROUPS is not set
+-# CONFIG_FAIR_GROUP_SCHED is not set
++# CONFIG_GROUP_SCHED is not set
  CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
  CONFIG_RELAY=y
++# CONFIG_NAMESPACES is not set
  CONFIG_BLK_DEV_INITRD=y
-@@ -63,35 +64,28 @@
+ CONFIG_INITRAMFS_SOURCE=""
+ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+@@ -58,11 +58,13 @@
+ CONFIG_PRINTK=y
+ CONFIG_BUG=y
+ CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
+ # CONFIG_BASE_FULL is not set
+ CONFIG_FUTEX=y
  CONFIG_ANON_INODES=y
  CONFIG_EPOLL=y
  CONFIG_SIGNALFD=y
--CONFIG_TIMERFD=y
++CONFIG_TIMERFD=y
  CONFIG_EVENTFD=y
  CONFIG_SHMEM=y
  CONFIG_VM_EVENT_COUNTERS=y
--# CONFIG_SLUB_DEBUG is not set
-+CONFIG_SLUB_DEBUG=y
+@@ -70,6 +72,14 @@
  # CONFIG_SLAB is not set
  CONFIG_SLUB=y
  # CONFIG_SLOB is not set
-+CONFIG_SLABINFO=y
++CONFIG_PROFILING=y
++# CONFIG_MARKERS is not set
++CONFIG_OPROFILE=m
++CONFIG_HAVE_OPROFILE=y
++CONFIG_KPROBES=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++CONFIG_PROC_PAGE_MONITOR=y
+ CONFIG_SLABINFO=y
  CONFIG_RT_MUTEXES=y
  # CONFIG_TINY_SHMEM is not set
- CONFIG_BASE_SMALL=1
--
--#
--# Loadable module support
--#
- CONFIG_MODULES=y
- CONFIG_MODULE_UNLOAD=y
- # CONFIG_MODULE_FORCE_UNLOAD is not set
- # CONFIG_MODVERSIONS is not set
- # CONFIG_MODULE_SRCVERSION_ALL is not set
- # CONFIG_KMOD is not set
--
--#
--# Block layer
--#
- CONFIG_BLOCK=y
- # CONFIG_LBD is not set
- # CONFIG_BLK_DEV_IO_TRACE is not set
- # CONFIG_LSF is not set
-+# CONFIG_BLK_DEV_BSG is not set
- 
- #
- # IO Schedulers
-@@ -99,32 +93,49 @@
- CONFIG_IOSCHED_NOOP=y
- # CONFIG_IOSCHED_AS is not set
- # CONFIG_IOSCHED_DEADLINE is not set
--# CONFIG_IOSCHED_CFQ is not set
-+CONFIG_IOSCHED_CFQ=y
- # CONFIG_DEFAULT_AS is not set
- # CONFIG_DEFAULT_DEADLINE is not set
--# CONFIG_DEFAULT_CFQ is not set
--CONFIG_DEFAULT_NOOP=y
--CONFIG_DEFAULT_IOSCHED="noop"
-+CONFIG_DEFAULT_CFQ=y
-+# CONFIG_DEFAULT_NOOP is not set
-+CONFIG_DEFAULT_IOSCHED="cfq"
+@@ -98,10 +108,15 @@
+ CONFIG_DEFAULT_CFQ=y
+ # CONFIG_DEFAULT_NOOP is not set
+ CONFIG_DEFAULT_IOSCHED="cfq"
++CONFIG_CLASSIC_RCU=y
  
  #
  # System Type and features
@@ -1972,422 +1564,138 @@
  CONFIG_SUBARCH_AVR32B=y
  CONFIG_MMU=y
  CONFIG_PERFORMANCE_COUNTERS=y
- CONFIG_PLATFORM_AT32AP=y
-+CONFIG_CPU_AT32AP700X=y
- CONFIG_CPU_AT32AP7000=y
--CONFIG_BOARD_ATSTK1002=y
- CONFIG_BOARD_ATSTK1000=y
- # CONFIG_BOARD_ATNGW100 is not set
-+CONFIG_BOARD_ATSTK1002=y
-+# CONFIG_BOARD_ATSTK1003 is not set
-+# CONFIG_BOARD_ATSTK1004 is not set
-+# CONFIG_BOARD_ATSTK100X_CUSTOM is not set
-+# CONFIG_BOARD_ATSTK100X_SPI1 is not set
-+# CONFIG_BOARD_ATSTK1000_J2_LED is not set
-+# CONFIG_BOARD_ATSTK1000_J2_LED8 is not set
-+# CONFIG_BOARD_ATSTK1000_J2_RGB is not set
-+CONFIG_BOARD_ATSTK1000_EXTDAC=y
+@@ -113,12 +128,16 @@
+ CONFIG_BOARD_ATSTK1002=y
+ # CONFIG_BOARD_ATSTK1003 is not set
+ # CONFIG_BOARD_ATSTK1004 is not set
++# CONFIG_BOARD_ATSTK1006 is not set
+ # CONFIG_BOARD_ATSTK100X_CUSTOM is not set
+ # CONFIG_BOARD_ATSTK100X_SPI1 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED8 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_RGB is not set
+ CONFIG_BOARD_ATSTK1000_EXTDAC=y
 +# CONFIG_BOARD_ATSTK100X_ENABLE_AC97 is not set
 +# CONFIG_BOARD_ATSTK1000_CF_HACKS is not set
 +# CONFIG_BOARD_ATSTK100X_ENABLE_PSIF is not set
  CONFIG_LOADER_U_BOOT=y
  
  #
- # Atmel AVR32 AP options
- #
--# CONFIG_AP7000_32_BIT_SMC is not set
--CONFIG_AP7000_16_BIT_SMC=y
--# CONFIG_AP7000_8_BIT_SMC is not set
-+# CONFIG_AP700X_32_BIT_SMC is not set
-+CONFIG_AP700X_16_BIT_SMC=y
-+# CONFIG_AP700X_8_BIT_SMC is not set
+@@ -127,6 +146,7 @@
+ # CONFIG_AP700X_32_BIT_SMC is not set
+ CONFIG_AP700X_16_BIT_SMC=y
+ # CONFIG_AP700X_8_BIT_SMC is not set
 +CONFIG_GPIO_DEV=y
  CONFIG_LOAD_ADDRESS=0x10000000
  CONFIG_ENTRY_ADDRESS=0x90000000
  CONFIG_PHYS_OFFSET=0x10000000
-@@ -144,10 +155,14 @@
- CONFIG_FLATMEM=y
- CONFIG_FLAT_NODE_MEM_MAP=y
- # CONFIG_SPARSEMEM_STATIC is not set
-+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
- CONFIG_SPLIT_PTLOCK_CPUS=4
- # CONFIG_RESOURCES_64BIT is not set
+@@ -152,16 +172,26 @@
  CONFIG_ZONE_DMA_FLAG=0
-+CONFIG_VIRT_TO_BUS=y
+ CONFIG_VIRT_TO_BUS=y
  # CONFIG_OWNERSHIP_TRACE is not set
 +CONFIG_NMI_DEBUGGING=y
 +CONFIG_DW_DMAC=y
  # CONFIG_HZ_100 is not set
  CONFIG_HZ_250=y
  # CONFIG_HZ_300 is not set
-@@ -156,13 +171,31 @@
+ # CONFIG_HZ_1000 is not set
+ CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
  CONFIG_CMDLINE=""
  
  #
--# Bus options
-+# Power management options
- #
--# CONFIG_ARCH_SUPPORTS_MSI is not set
- 
- #
--# PCCARD (PCMCIA/CardBus) support
-+# CPU Frequency scaling
-+#
-+CONFIG_CPU_FREQ=y
-+CONFIG_CPU_FREQ_TABLE=y
-+# CONFIG_CPU_FREQ_DEBUG is not set
-+# CONFIG_CPU_FREQ_STAT is not set
-+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
-+CONFIG_CPU_FREQ_GOV_USERSPACE=y
-+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_AT32AP=y
-+
-+#
-+# Bus options
+ # Power management options
  #
-+# CONFIG_ARCH_SUPPORTS_MSI is not set
- # CONFIG_PCCARD is not set
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++CONFIG_PM=y
++# CONFIG_PM_LEGACY is not set
++# CONFIG_PM_DEBUG is not set
++CONFIG_PM_SLEEP=y
++CONFIG_SUSPEND=y
++CONFIG_SUSPEND_FREEZER=y
  
  #
-@@ -182,7 +215,12 @@
- CONFIG_PACKET=y
- CONFIG_PACKET_MMAP=y
- CONFIG_UNIX=y
--# CONFIG_NET_KEY is not set
-+CONFIG_XFRM=y
-+CONFIG_XFRM_USER=m
-+# CONFIG_XFRM_SUB_POLICY is not set
-+# CONFIG_XFRM_MIGRATE is not set
-+CONFIG_NET_KEY=m
-+# CONFIG_NET_KEY_MIGRATE is not set
+ # CPU Frequency scaling
+@@ -170,9 +200,9 @@
+ CONFIG_CPU_FREQ_TABLE=y
+ # CONFIG_CPU_FREQ_DEBUG is not set
+ # CONFIG_CPU_FREQ_STAT is not set
+-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
++# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
++CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+ CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+ # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+@@ -208,6 +238,7 @@
+ CONFIG_XFRM_USER=m
+ # CONFIG_XFRM_SUB_POLICY is not set
+ # CONFIG_XFRM_MIGRATE is not set
++# CONFIG_XFRM_STATISTICS is not set
+ CONFIG_NET_KEY=m
+ # CONFIG_NET_KEY_MIGRATE is not set
  CONFIG_INET=y
- # CONFIG_IP_MULTICAST is not set
- # CONFIG_IP_ADVANCED_ROUTER is not set
-@@ -191,36 +229,52 @@
- CONFIG_IP_PNP_DHCP=y
- # CONFIG_IP_PNP_BOOTP is not set
- # CONFIG_IP_PNP_RARP is not set
--# CONFIG_NET_IPIP is not set
--# CONFIG_NET_IPGRE is not set
-+CONFIG_NET_IPIP=m
-+CONFIG_NET_IPGRE=m
- # CONFIG_ARPD is not set
- # CONFIG_SYN_COOKIES is not set
--# CONFIG_INET_AH is not set
--# CONFIG_INET_ESP is not set
-+CONFIG_INET_AH=m
-+CONFIG_INET_ESP=m
- # CONFIG_INET_IPCOMP is not set
- # CONFIG_INET_XFRM_TUNNEL is not set
--# CONFIG_INET_TUNNEL is not set
--# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
--# CONFIG_INET_XFRM_MODE_TUNNEL is not set
--# CONFIG_INET_XFRM_MODE_BEET is not set
-+CONFIG_INET_TUNNEL=m
-+CONFIG_INET_XFRM_MODE_TRANSPORT=m
-+CONFIG_INET_XFRM_MODE_TUNNEL=m
-+CONFIG_INET_XFRM_MODE_BEET=m
-+# CONFIG_INET_LRO is not set
- CONFIG_INET_DIAG=y
- CONFIG_INET_TCP_DIAG=y
- # CONFIG_TCP_CONG_ADVANCED is not set
- CONFIG_TCP_CONG_CUBIC=y
- CONFIG_DEFAULT_TCP_CONG="cubic"
- # CONFIG_TCP_MD5SIG is not set
--# CONFIG_IPV6 is not set
--# CONFIG_INET6_XFRM_TUNNEL is not set
--# CONFIG_INET6_TUNNEL is not set
-+CONFIG_IPV6=m
-+# CONFIG_IPV6_PRIVACY is not set
-+# CONFIG_IPV6_ROUTER_PREF is not set
-+# CONFIG_IPV6_OPTIMISTIC_DAD is not set
-+CONFIG_INET6_AH=m
-+CONFIG_INET6_ESP=m
-+CONFIG_INET6_IPCOMP=m
-+# CONFIG_IPV6_MIP6 is not set
-+CONFIG_INET6_XFRM_TUNNEL=m
-+CONFIG_INET6_TUNNEL=m
-+CONFIG_INET6_XFRM_MODE_TRANSPORT=m
-+CONFIG_INET6_XFRM_MODE_TUNNEL=m
-+CONFIG_INET6_XFRM_MODE_BEET=m
-+# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
-+CONFIG_IPV6_SIT=m
-+CONFIG_IPV6_TUNNEL=m
-+# CONFIG_IPV6_MULTIPLE_TABLES is not set
- # CONFIG_NETWORK_SECMARK is not set
- # CONFIG_NETFILTER is not set
- # CONFIG_IP_DCCP is not set
- # CONFIG_IP_SCTP is not set
- # CONFIG_TIPC is not set
- # CONFIG_ATM is not set
--# CONFIG_BRIDGE is not set
-+CONFIG_BRIDGE=m
- # CONFIG_VLAN_8021Q is not set
- # CONFIG_DECNET is not set
-+CONFIG_LLC=m
- # CONFIG_LLC2 is not set
- # CONFIG_IPX is not set
- # CONFIG_ATALK is not set
-@@ -228,16 +282,13 @@
- # CONFIG_LAPB is not set
- # CONFIG_ECONET is not set
- # CONFIG_WAN_ROUTER is not set
--
--#
--# QoS and/or fair queueing
--#
- # CONFIG_NET_SCHED is not set
- 
- #
- # Network testing
- #
+@@ -279,6 +310,7 @@
  # CONFIG_NET_PKTGEN is not set
-+# CONFIG_NET_TCPPROBE is not set
+ # CONFIG_NET_TCPPROBE is not set
  # CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
  # CONFIG_IRDA is not set
  # CONFIG_BT is not set
-@@ -251,6 +302,7 @@
- # CONFIG_MAC80211 is not set
- # CONFIG_IEEE80211 is not set
- # CONFIG_RFKILL is not set
-+# CONFIG_NET_9P is not set
- 
- #
- # Device Drivers
-@@ -259,16 +311,13 @@
- #
- # Generic Driver Options
- #
-+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
- CONFIG_STANDALONE=y
- # CONFIG_PREVENT_FIRMWARE_BUILD is not set
- # CONFIG_FW_LOADER is not set
- # CONFIG_DEBUG_DRIVER is not set
- # CONFIG_DEBUG_DEVRES is not set
- # CONFIG_SYS_HYPERVISOR is not set
--
--#
--# Connector - unified userspace <-> kernelspace linker
--#
- # CONFIG_CONNECTOR is not set
- CONFIG_MTD=y
- # CONFIG_MTD_DEBUG is not set
-@@ -288,6 +337,7 @@
- # CONFIG_INFTL is not set
- # CONFIG_RFD_FTL is not set
- # CONFIG_SSFDC is not set
-+# CONFIG_MTD_OOPS is not set
- 
- #
- # RAM/ROM/Flash chip drivers
-@@ -327,6 +377,8 @@
- #
- # Self-contained MTD device drivers
- #
-+CONFIG_MTD_DATAFLASH=m
-+CONFIG_MTD_M25P80=m
- # CONFIG_MTD_SLRAM is not set
- # CONFIG_MTD_PHRAM is not set
- # CONFIG_MTD_MTDRAM is not set
-@@ -345,20 +397,8 @@
- # UBI - Unsorted block images
- #
- # CONFIG_MTD_UBI is not set
--
--#
--# Parallel port support
--#
- # CONFIG_PARPORT is not set
--
--#
--# Plug and Play support
--#
--# CONFIG_PNPACPI is not set
--
--#
--# Block devices
--#
-+CONFIG_BLK_DEV=y
- # CONFIG_BLK_DEV_COW_COMMON is not set
- CONFIG_BLK_DEV_LOOP=m
- # CONFIG_BLK_DEV_CRYPTOLOOP is not set
-@@ -369,42 +409,91 @@
- CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
+ # CONFIG_AF_RXRPC is not set
+@@ -395,13 +427,18 @@
+ CONFIG_BLK_DEV_RAM=m
+ CONFIG_BLK_DEV_RAM_COUNT=16
+ CONFIG_BLK_DEV_RAM_SIZE=4096
+-CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
++# CONFIG_BLK_DEV_XIP is not set
  # CONFIG_CDROM_PKTCDVD is not set
  # CONFIG_ATA_OVER_ETH is not set
--
--#
--# Misc devices
--#
--# CONFIG_BLINK is not set
-+CONFIG_MISC_DEVICES=y
+ CONFIG_MISC_DEVICES=y
 +CONFIG_ATMEL_PWM=m
 +CONFIG_ATMEL_TCLIB=y
 +CONFIG_ATMEL_TCB_CLKSRC=y
 +CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
-+# CONFIG_EEPROM_93CX6 is not set
-+CONFIG_ATMEL_SSC=m
- # CONFIG_IDE is not set
+ # CONFIG_EEPROM_93CX6 is not set
+ CONFIG_ATMEL_SSC=m
+-# CONFIG_IDE is not set
++# CONFIG_ENCLOSURE_SERVICES is not set
++# CONFIG_HAVE_IDE is not set
  
  #
  # SCSI device support
- #
- # CONFIG_RAID_ATTRS is not set
--# CONFIG_SCSI is not set
-+CONFIG_SCSI=m
-+CONFIG_SCSI_DMA=y
-+# CONFIG_SCSI_TGT is not set
- # CONFIG_SCSI_NETLINK is not set
--# CONFIG_ATA is not set
-+# CONFIG_SCSI_PROC_FS is not set
- 
- #
--# Multi-device support (RAID and LVM)
-+# SCSI support type (disk, tape, CD-ROM)
- #
--# CONFIG_MD is not set
-+CONFIG_BLK_DEV_SD=m
-+# CONFIG_CHR_DEV_ST is not set
-+# CONFIG_CHR_DEV_OSST is not set
-+CONFIG_BLK_DEV_SR=m
-+# CONFIG_BLK_DEV_SR_VENDOR is not set
-+# CONFIG_CHR_DEV_SG is not set
-+# CONFIG_CHR_DEV_SCH is not set
-+
-+#
-+# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
-+#
-+# CONFIG_SCSI_MULTI_LUN is not set
-+# CONFIG_SCSI_CONSTANTS is not set
-+# CONFIG_SCSI_LOGGING is not set
-+# CONFIG_SCSI_SCAN_ASYNC is not set
-+CONFIG_SCSI_WAIT_SCAN=m
- 
- #
--# Network device support
-+# SCSI Transports
- #
-+# CONFIG_SCSI_SPI_ATTRS is not set
-+# CONFIG_SCSI_FC_ATTRS is not set
-+# CONFIG_SCSI_ISCSI_ATTRS is not set
-+# CONFIG_SCSI_SAS_LIBSAS is not set
-+# CONFIG_SCSI_SRP_ATTRS is not set
-+# CONFIG_SCSI_LOWLEVEL is not set
-+CONFIG_ATA=m
-+# CONFIG_ATA_NONSTANDARD is not set
-+CONFIG_PATA_AT32=m
-+# CONFIG_PATA_PLATFORM is not set
-+# CONFIG_MD is not set
- CONFIG_NETDEVICES=y
--CONFIG_DUMMY=y
-+# CONFIG_NETDEVICES_MULTIQUEUE is not set
-+# CONFIG_DUMMY is not set
- # CONFIG_BONDING is not set
-+# CONFIG_MACVLAN is not set
- # CONFIG_EQUALIZER is not set
- CONFIG_TUN=m
--# CONFIG_PHYLIB is not set
-+# CONFIG_VETH is not set
-+CONFIG_PHYLIB=y
- 
- #
--# Ethernet (10 or 100Mbit)
-+# MII PHY device drivers
- #
-+# CONFIG_MARVELL_PHY is not set
-+# CONFIG_DAVICOM_PHY is not set
-+# CONFIG_QSEMI_PHY is not set
-+# CONFIG_LXT_PHY is not set
-+# CONFIG_CICADA_PHY is not set
-+# CONFIG_VITESSE_PHY is not set
-+# CONFIG_SMSC_PHY is not set
-+# CONFIG_BROADCOM_PHY is not set
-+# CONFIG_ICPLUS_PHY is not set
-+# CONFIG_FIXED_PHY is not set
-+# CONFIG_MDIO_BITBANG is not set
+@@ -444,6 +481,7 @@
+ # CONFIG_SCSI_LOWLEVEL is not set
+ CONFIG_ATA=m
+ # CONFIG_ATA_NONSTANDARD is not set
++# CONFIG_SATA_MV is not set
+ CONFIG_PATA_AT32=m
+ # CONFIG_PATA_PLATFORM is not set
+ # CONFIG_MD is not set
+@@ -469,11 +507,13 @@
+ # CONFIG_SMSC_PHY is not set
+ # CONFIG_BROADCOM_PHY is not set
+ # CONFIG_ICPLUS_PHY is not set
++# CONFIG_REALTEK_PHY is not set
+ # CONFIG_FIXED_PHY is not set
+ # CONFIG_MDIO_BITBANG is not set
  CONFIG_NET_ETHERNET=y
--CONFIG_MII=y
-+# CONFIG_MII is not set
+ # CONFIG_MII is not set
  CONFIG_MACB=y
-+# CONFIG_IBM_NEW_EMAC_ZMII is not set
-+# CONFIG_IBM_NEW_EMAC_RGMII is not set
-+# CONFIG_IBM_NEW_EMAC_TAH is not set
-+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
-+# CONFIG_B44 is not set
- # CONFIG_NETDEV_1000 is not set
- # CONFIG_NETDEV_10000 is not set
- 
-@@ -423,27 +512,54 @@
- CONFIG_PPP_BSDCOMP=m
- # CONFIG_PPP_MPPE is not set
- # CONFIG_PPPOE is not set
-+# CONFIG_PPPOL2TP is not set
++# CONFIG_ENC28J60 is not set
+ # CONFIG_IBM_NEW_EMAC_ZMII is not set
+ # CONFIG_IBM_NEW_EMAC_RGMII is not set
+ # CONFIG_IBM_NEW_EMAC_TAH is not set
+@@ -500,7 +540,6 @@
+ # CONFIG_PPPOL2TP is not set
  # CONFIG_SLIP is not set
  CONFIG_SLHC=m
- # CONFIG_SHAPER is not set
+-# CONFIG_SHAPER is not set
  # CONFIG_NETCONSOLE is not set
  # CONFIG_NETPOLL is not set
  # CONFIG_NET_POLL_CONTROLLER is not set
--
--#
--# ISDN subsystem
--#
- # CONFIG_ISDN is not set
--
--#
--# Telephony Support
--#
- # CONFIG_PHONE is not set
- 
- #
- # Input device support
- #
--# CONFIG_INPUT is not set
-+CONFIG_INPUT=m
-+# CONFIG_INPUT_FF_MEMLESS is not set
-+CONFIG_INPUT_POLLDEV=m
-+
-+#
-+# Userland interfaces
-+#
-+CONFIG_INPUT_MOUSEDEV=m
-+CONFIG_INPUT_MOUSEDEV_PSAUX=y
-+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
-+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
-+# CONFIG_INPUT_JOYDEV is not set
-+CONFIG_INPUT_EVDEV=m
-+# CONFIG_INPUT_EVBUG is not set
-+
-+#
-+# Input Device Drivers
-+#
-+CONFIG_INPUT_KEYBOARD=y
-+# CONFIG_KEYBOARD_ATKBD is not set
-+# CONFIG_KEYBOARD_SUNKBD is not set
-+# CONFIG_KEYBOARD_LKKBD is not set
-+# CONFIG_KEYBOARD_XTKBD is not set
-+# CONFIG_KEYBOARD_NEWTON is not set
-+# CONFIG_KEYBOARD_STOWAWAY is not set
-+CONFIG_KEYBOARD_GPIO=m
-+CONFIG_INPUT_MOUSE=y
-+# CONFIG_MOUSE_PS2 is not set
-+# CONFIG_MOUSE_SERIAL is not set
-+# CONFIG_MOUSE_VSXXXAA is not set
-+CONFIG_MOUSE_GPIO=m
-+# CONFIG_INPUT_JOYSTICK is not set
-+# CONFIG_INPUT_TABLET is not set
-+# CONFIG_INPUT_TOUCHSCREEN is not set
-+# CONFIG_INPUT_MISC is not set
- 
- #
- # Hardware I/O ports
-@@ -467,40 +583,94 @@
+@@ -568,6 +607,7 @@
  #
  CONFIG_SERIAL_ATMEL=y
  CONFIG_SERIAL_ATMEL_CONSOLE=y
@@ -2395,347 +1703,672 @@
  # CONFIG_SERIAL_ATMEL_TTYAT is not set
  CONFIG_SERIAL_CORE=y
  CONFIG_SERIAL_CORE_CONSOLE=y
- CONFIG_UNIX98_PTYS=y
+@@ -575,8 +615,6 @@
  # CONFIG_LEGACY_PTYS is not set
--
--#
--# IPMI
--#
  # CONFIG_IPMI_HANDLER is not set
--# CONFIG_WATCHDOG is not set
  # CONFIG_HW_RANDOM is not set
- # CONFIG_RTC is not set
- # CONFIG_GEN_RTC is not set
+-# CONFIG_RTC is not set
+-# CONFIG_GEN_RTC is not set
  # CONFIG_R3964 is not set
  # CONFIG_RAW_DRIVER is not set
-+# CONFIG_TCG_TPM is not set
-+CONFIG_I2C=m
-+CONFIG_I2C_BOARDINFO=y
-+CONFIG_I2C_CHARDEV=m
+ # CONFIG_TCG_TPM is not set
+@@ -594,6 +632,7 @@
+ #
+ # I2C Hardware Bus support
+ #
++CONFIG_I2C_ATMELTWI=m
+ CONFIG_I2C_GPIO=m
+ # CONFIG_I2C_OCORES is not set
+ # CONFIG_I2C_PARPORT_LIGHT is not set
+@@ -604,13 +643,12 @@
+ #
+ # Miscellaneous I2C Chip support
+ #
+-# CONFIG_SENSORS_DS1337 is not set
+-# CONFIG_SENSORS_DS1374 is not set
+ # CONFIG_DS1682 is not set
+ # CONFIG_SENSORS_EEPROM is not set
+ # CONFIG_SENSORS_PCF8574 is not set
+-# CONFIG_SENSORS_PCA9539 is not set
++# CONFIG_PCF8575 is not set
+ # CONFIG_SENSORS_PCF8591 is not set
++# CONFIG_TPS65010 is not set
+ # CONFIG_SENSORS_MAX6875 is not set
+ # CONFIG_SENSORS_TSL2550 is not set
+ # CONFIG_I2C_DEBUG_CORE is not set
+@@ -637,9 +675,27 @@
+ # CONFIG_SPI_AT25 is not set
+ CONFIG_SPI_SPIDEV=m
+ # CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
 +
 +#
-+# I2C Algorithms
++# GPIO Support
 +#
-+CONFIG_I2C_ALGOBIT=m
-+# CONFIG_I2C_ALGOPCF is not set
-+# CONFIG_I2C_ALGOPCA is not set
++# CONFIG_DEBUG_GPIO is not set
 +
 +#
-+# I2C Hardware Bus support
++# I2C GPIO expanders:
 +#
-+CONFIG_I2C_ATMELTWI=m
-+CONFIG_I2C_GPIO=m
-+# CONFIG_I2C_OCORES is not set
-+# CONFIG_I2C_PARPORT_LIGHT is not set
-+# CONFIG_I2C_SIMTEC is not set
-+# CONFIG_I2C_TAOS_EVM is not set
-+# CONFIG_I2C_STUB is not set
++# CONFIG_GPIO_PCA953X is not set
++# CONFIG_GPIO_PCF857X is not set
 +
 +#
-+# Miscellaneous I2C Chip support
++# SPI GPIO expanders:
 +#
-+# CONFIG_SENSORS_DS1337 is not set
-+# CONFIG_SENSORS_DS1374 is not set
-+# CONFIG_DS1682 is not set
-+# CONFIG_SENSORS_EEPROM is not set
-+# CONFIG_SENSORS_PCF8574 is not set
-+# CONFIG_SENSORS_PCA9539 is not set
-+# CONFIG_SENSORS_PCF8591 is not set
-+# CONFIG_SENSORS_MAX6875 is not set
-+# CONFIG_SENSORS_TSL2550 is not set
-+# CONFIG_I2C_DEBUG_CORE is not set
-+# CONFIG_I2C_DEBUG_ALGO is not set
-+# CONFIG_I2C_DEBUG_BUS is not set
-+# CONFIG_I2C_DEBUG_CHIP is not set
++# CONFIG_GPIO_MCP23S08 is not set
+ # CONFIG_W1 is not set
+ # CONFIG_POWER_SUPPLY is not set
+ # CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
+ CONFIG_WATCHDOG=y
+ # CONFIG_WATCHDOG_NOWAYOUT is not set
  
+@@ -732,12 +788,18 @@
  #
--# TPM devices
-+# SPI support
+ # Generic devices
  #
--# CONFIG_TCG_TPM is not set
--# CONFIG_I2C is not set
-+CONFIG_SPI=y
-+# CONFIG_SPI_DEBUG is not set
-+CONFIG_SPI_MASTER=y
++CONFIG_SND_AC97_CODEC=m
+ # CONFIG_SND_DUMMY is not set
+ # CONFIG_SND_MTPAV is not set
+ # CONFIG_SND_SERIAL_U16550 is not set
+ # CONFIG_SND_MPU401 is not set
  
  #
--# SPI support
-+# SPI Master Controller Drivers
++# AVR32 devices
++#
++CONFIG_SND_ATMEL_AC97=m
++
++#
+ # SPI devices
  #
--# CONFIG_SPI is not set
--# CONFIG_SPI_MASTER is not set
-+CONFIG_SPI_ATMEL=y
-+# CONFIG_SPI_BITBANG is not set
- 
+ CONFIG_SND_AT73C213=m
+@@ -753,9 +815,14 @@
  #
--# Dallas's 1-wire bus
-+# SPI Protocol Masters
+ 
  #
-+# CONFIG_SPI_AT25 is not set
-+CONFIG_SPI_SPIDEV=m
-+# CONFIG_SPI_TLE62X0 is not set
- # CONFIG_W1 is not set
-+# CONFIG_POWER_SUPPLY is not set
- # CONFIG_HWMON is not set
-+CONFIG_WATCHDOG=y
-+# CONFIG_WATCHDOG_NOWAYOUT is not set
-+
++# ALSA SoC audio for Freescale SOCs
 +#
-+# Watchdog Device Drivers
-+#
-+# CONFIG_SOFT_WATCHDOG is not set
-+CONFIG_AT32AP700X_WDT=y
 +
 +#
-+# Sonics Silicon Backplane
-+#
-+CONFIG_SSB_POSSIBLE=y
-+# CONFIG_SSB is not set
+ # Open Sound System
+ #
+ # CONFIG_SOUND_PRIME is not set
++CONFIG_AC97_BUS=m
+ # CONFIG_HID_SUPPORT is not set
+ CONFIG_USB_SUPPORT=y
+ # CONFIG_USB_ARCH_HAS_HCD is not set
+@@ -765,10 +832,6 @@
+ #
+ # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
+ #
+-
+-#
+-# USB Gadget Support
+-#
+ CONFIG_USB_GADGET=y
+ # CONFIG_USB_GADGET_DEBUG is not set
+ # CONFIG_USB_GADGET_DEBUG_FILES is not set
+@@ -796,27 +859,31 @@
+ # CONFIG_USB_FILE_STORAGE_TEST is not set
+ CONFIG_USB_G_SERIAL=m
+ # CONFIG_USB_MIDI_GADGET is not set
+-CONFIG_MMC=m
++# CONFIG_USB_G_PRINTER is not set
++CONFIG_MMC=y
+ # CONFIG_MMC_DEBUG is not set
+ # CONFIG_MMC_UNSAFE_RESUME is not set
  
  #
- # Multifunction device drivers
-@@ -517,23 +687,104 @@
+ # MMC/SD Card Drivers
  #
- # Graphics support
+-CONFIG_MMC_BLOCK=m
++CONFIG_MMC_BLOCK=y
+ CONFIG_MMC_BLOCK_BOUNCE=y
+ # CONFIG_SDIO_UART is not set
+ 
  #
--# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
-+# CONFIG_VGASTATE is not set
-+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
-+CONFIG_FB=y
-+# CONFIG_FIRMWARE_EDID is not set
-+# CONFIG_FB_DDC is not set
-+CONFIG_FB_CFB_FILLRECT=y
-+CONFIG_FB_CFB_COPYAREA=y
-+CONFIG_FB_CFB_IMAGEBLIT=y
-+# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
-+# CONFIG_FB_SYS_FILLRECT is not set
-+# CONFIG_FB_SYS_COPYAREA is not set
-+# CONFIG_FB_SYS_IMAGEBLIT is not set
-+# CONFIG_FB_SYS_FOPS is not set
-+CONFIG_FB_DEFERRED_IO=y
-+# CONFIG_FB_SVGALIB is not set
-+# CONFIG_FB_MACMODES is not set
-+# CONFIG_FB_BACKLIGHT is not set
-+# CONFIG_FB_MODE_HELPERS is not set
-+# CONFIG_FB_TILEBLITTING is not set
-+
-+#
-+# Frame buffer hardware drivers
-+#
-+# CONFIG_FB_S1D13XXX is not set
-+CONFIG_FB_ATMEL=y
-+# CONFIG_FB_VIRTUAL is not set
-+CONFIG_BACKLIGHT_LCD_SUPPORT=y
-+CONFIG_LCD_CLASS_DEVICE=y
-+CONFIG_LCD_LTV350QV=y
-+# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
+ # MMC/SD Host Controller Drivers
+ #
++CONFIG_MMC_ATMELMCI=y
+ CONFIG_MMC_SPI=m
++# CONFIG_MEMSTICK is not set
+ CONFIG_NEW_LEDS=y
+ CONFIG_LEDS_CLASS=m
  
  #
- # Display device support
+ # LED drivers
  #
- # CONFIG_DISPLAY_SUPPORT is not set
--# CONFIG_VGASTATE is not set
--# CONFIG_FB is not set
-+# CONFIG_LOGO is not set
++CONFIG_LEDS_ATMEL_PWM=m
+ CONFIG_LEDS_GPIO=m
+ 
+ #
+@@ -853,19 +920,22 @@
+ # CONFIG_RTC_DRV_PCF8563 is not set
+ # CONFIG_RTC_DRV_PCF8583 is not set
+ # CONFIG_RTC_DRV_M41T80 is not set
++# CONFIG_RTC_DRV_S35390A is not set
  
  #
- # Sound
+ # SPI RTC drivers
  #
--# CONFIG_SOUND is not set
-+CONFIG_SOUND=m
+-# CONFIG_RTC_DRV_RS5C348 is not set
+ # CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
++# CONFIG_RTC_DRV_RS5C348 is not set
+ 
+ #
+ # Platform RTC drivers
+ #
++# CONFIG_RTC_DRV_DS1511 is not set
+ # CONFIG_RTC_DRV_DS1553 is not set
+-# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_DS1742 is not set
++# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_M48T86 is not set
+ # CONFIG_RTC_DRV_M48T59 is not set
+ # CONFIG_RTC_DRV_V3020 is not set
+@@ -883,13 +953,13 @@
+ #
+ # File systems
+ #
+-CONFIG_EXT2_FS=m
++CONFIG_EXT2_FS=y
+ # CONFIG_EXT2_FS_XATTR is not set
+ # CONFIG_EXT2_FS_XIP is not set
+-CONFIG_EXT3_FS=m
++CONFIG_EXT3_FS=y
+ # CONFIG_EXT3_FS_XATTR is not set
+ # CONFIG_EXT4DEV_FS is not set
+-CONFIG_JBD=m
++CONFIG_JBD=y
+ # CONFIG_JBD_DEBUG is not set
+ # CONFIG_REISERFS_FS is not set
+ # CONFIG_JFS_FS is not set
+@@ -897,12 +967,10 @@
+ # CONFIG_XFS_FS is not set
+ # CONFIG_GFS2_FS is not set
+ # CONFIG_OCFS2_FS is not set
+-CONFIG_MINIX_FS=m
+-# CONFIG_ROMFS_FS is not set
++# CONFIG_DNOTIFY is not set
+ CONFIG_INOTIFY=y
+ CONFIG_INOTIFY_USER=y
+ # CONFIG_QUOTA is not set
+-# CONFIG_DNOTIFY is not set
+ # CONFIG_AUTOFS_FS is not set
+ # CONFIG_AUTOFS4_FS is not set
+ CONFIG_FUSE_FS=m
+@@ -933,7 +1001,7 @@
+ CONFIG_TMPFS=y
+ # CONFIG_TMPFS_POSIX_ACL is not set
+ # CONFIG_HUGETLB_PAGE is not set
+-# CONFIG_CONFIGFS_FS is not set
++CONFIG_CONFIGFS_FS=y
+ 
+ #
+ # Miscellaneous filesystems
+@@ -957,8 +1025,10 @@
+ # CONFIG_JFFS2_RUBIN is not set
+ # CONFIG_CRAMFS is not set
+ # CONFIG_VXFS_FS is not set
++CONFIG_MINIX_FS=m
+ # CONFIG_HPFS_FS is not set
+ # CONFIG_QNX4FS_FS is not set
++# CONFIG_ROMFS_FS is not set
+ # CONFIG_SYSV_FS is not set
+ # CONFIG_UFS_FS is not set
+ CONFIG_NETWORK_FILESYSTEMS=y
+@@ -1028,11 +1098,6 @@
+ # CONFIG_NLS_KOI8_U is not set
+ CONFIG_NLS_UTF8=m
+ # CONFIG_DLM is not set
+-CONFIG_INSTRUMENTATION=y
+-CONFIG_PROFILING=y
+-CONFIG_OPROFILE=m
+-CONFIG_KPROBES=y
+-# CONFIG_MARKERS is not set
+ 
+ #
+ # Kernel hacking
+@@ -1051,6 +1116,7 @@
+ # CONFIG_SCHEDSTATS is not set
+ # CONFIG_TIMER_STATS is not set
+ # CONFIG_SLUB_DEBUG_ON is not set
++# CONFIG_SLUB_STATS is not set
+ # CONFIG_DEBUG_RT_MUTEXES is not set
+ # CONFIG_RT_MUTEX_TESTER is not set
+ # CONFIG_DEBUG_SPINLOCK is not set
+@@ -1067,9 +1133,10 @@
+ # CONFIG_DEBUG_LIST is not set
+ # CONFIG_DEBUG_SG is not set
+ CONFIG_FRAME_POINTER=y
+-CONFIG_FORCED_INLINING=y
+ # CONFIG_BOOT_PRINTK_DELAY is not set
+ # CONFIG_RCU_TORTURE_TEST is not set
++# CONFIG_KPROBES_SANITY_TEST is not set
++# CONFIG_BACKTRACE_SELF_TEST is not set
+ # CONFIG_LKDTM is not set
+ # CONFIG_FAULT_INJECTION is not set
+ # CONFIG_SAMPLES is not set
+@@ -1082,7 +1149,9 @@
+ # CONFIG_SECURITY_FILE_CAPABILITIES is not set
+ CONFIG_CRYPTO=y
+ CONFIG_CRYPTO_ALGAPI=m
++CONFIG_CRYPTO_AEAD=m
+ CONFIG_CRYPTO_BLKCIPHER=m
++# CONFIG_CRYPTO_SEQIV is not set
+ CONFIG_CRYPTO_HASH=m
+ CONFIG_CRYPTO_MANAGER=m
+ CONFIG_CRYPTO_HMAC=m
+@@ -1101,6 +1170,9 @@
+ # CONFIG_CRYPTO_PCBC is not set
+ # CONFIG_CRYPTO_LRW is not set
+ # CONFIG_CRYPTO_XTS is not set
++# CONFIG_CRYPTO_CTR is not set
++# CONFIG_CRYPTO_GCM is not set
++# CONFIG_CRYPTO_CCM is not set
+ # CONFIG_CRYPTO_CRYPTD is not set
+ CONFIG_CRYPTO_DES=m
+ # CONFIG_CRYPTO_FCRYPT is not set
+@@ -1115,12 +1187,14 @@
+ # CONFIG_CRYPTO_KHAZAD is not set
+ # CONFIG_CRYPTO_ANUBIS is not set
+ # CONFIG_CRYPTO_SEED is not set
++# CONFIG_CRYPTO_SALSA20 is not set
+ CONFIG_CRYPTO_DEFLATE=m
+ # CONFIG_CRYPTO_MICHAEL_MIC is not set
+ # CONFIG_CRYPTO_CRC32C is not set
+ # CONFIG_CRYPTO_CAMELLIA is not set
+ # CONFIG_CRYPTO_TEST is not set
+-# CONFIG_CRYPTO_AUTHENC is not set
++CONFIG_CRYPTO_AUTHENC=m
++# CONFIG_CRYPTO_LZO is not set
+ # CONFIG_CRYPTO_HW is not set
+ 
+ #
+@@ -1135,6 +1209,7 @@
+ # CONFIG_LIBCRC32C is not set
+ CONFIG_ZLIB_INFLATE=y
+ CONFIG_ZLIB_DEFLATE=y
++CONFIG_GENERIC_ALLOCATOR=y
+ CONFIG_PLIST=y
+ CONFIG_HAS_IOMEM=y
+ CONFIG_HAS_IOPORT=y
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atstk1003_defconfig avr32-2.6/arch/avr32/configs/atstk1003_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atstk1003_defconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/configs/atstk1003_defconfig	2008-06-12 15:09:38.715815679 +0200
+@@ -1,7 +1,7 @@
+ #
+ # Automatically generated make config: don't edit
+-# Linux kernel version: 2.6.24-rc7
+-# Wed Jan  9 22:54:34 2008
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:33:36 2008
+ #
+ CONFIG_AVR32=y
+ CONFIG_GENERIC_GPIO=y
+@@ -13,10 +13,10 @@
+ CONFIG_GENERIC_IRQ_PROBE=y
+ CONFIG_RWSEM_GENERIC_SPINLOCK=y
+ CONFIG_GENERIC_TIME=y
++CONFIG_GENERIC_CLOCKEVENTS=y
+ # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+ # CONFIG_ARCH_HAS_ILOG2_U32 is not set
+ # CONFIG_ARCH_HAS_ILOG2_U64 is not set
+-CONFIG_ARCH_SUPPORTS_OPROFILE=y
+ CONFIG_GENERIC_HWEIGHT=y
+ CONFIG_GENERIC_CALIBRATE_DELAY=y
+ CONFIG_GENERIC_BUG=y
+@@ -39,17 +39,15 @@
+ CONFIG_TASKSTATS=y
+ CONFIG_TASK_DELAY_ACCT=y
+ # CONFIG_TASK_XACCT is not set
+-# CONFIG_USER_NS is not set
+-# CONFIG_PID_NS is not set
+ CONFIG_AUDIT=y
+ # CONFIG_IKCONFIG is not set
+ CONFIG_LOG_BUF_SHIFT=14
+ # CONFIG_CGROUPS is not set
+-CONFIG_FAIR_GROUP_SCHED=y
+-CONFIG_FAIR_USER_SCHED=y
+-# CONFIG_FAIR_CGROUP_SCHED is not set
++# CONFIG_GROUP_SCHED is not set
+ CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
+ CONFIG_RELAY=y
++# CONFIG_NAMESPACES is not set
+ CONFIG_BLK_DEV_INITRD=y
+ CONFIG_INITRAMFS_SOURCE=""
+ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+@@ -63,11 +61,13 @@
+ CONFIG_PRINTK=y
+ CONFIG_BUG=y
+ CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
+ # CONFIG_BASE_FULL is not set
+ CONFIG_FUTEX=y
+ CONFIG_ANON_INODES=y
+ CONFIG_EPOLL=y
+ CONFIG_SIGNALFD=y
++CONFIG_TIMERFD=y
+ CONFIG_EVENTFD=y
+ CONFIG_SHMEM=y
+ CONFIG_VM_EVENT_COUNTERS=y
+@@ -75,6 +75,14 @@
+ # CONFIG_SLAB is not set
+ CONFIG_SLUB=y
+ # CONFIG_SLOB is not set
++CONFIG_PROFILING=y
++# CONFIG_MARKERS is not set
++CONFIG_OPROFILE=m
++CONFIG_HAVE_OPROFILE=y
++CONFIG_KPROBES=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++CONFIG_PROC_PAGE_MONITOR=y
+ CONFIG_SLABINFO=y
+ CONFIG_RT_MUTEXES=y
+ # CONFIG_TINY_SHMEM is not set
+@@ -103,10 +111,15 @@
+ CONFIG_DEFAULT_CFQ=y
+ # CONFIG_DEFAULT_NOOP is not set
+ CONFIG_DEFAULT_IOSCHED="cfq"
++CONFIG_CLASSIC_RCU=y
+ 
+ #
+ # System Type and features
+ #
++CONFIG_TICK_ONESHOT=y
++CONFIG_NO_HZ=y
++CONFIG_HIGH_RES_TIMERS=y
++CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+ CONFIG_SUBARCH_AVR32B=y
+ CONFIG_MMU=y
+ CONFIG_PERFORMANCE_COUNTERS=y
+@@ -118,12 +131,16 @@
+ # CONFIG_BOARD_ATSTK1002 is not set
+ CONFIG_BOARD_ATSTK1003=y
+ # CONFIG_BOARD_ATSTK1004 is not set
++# CONFIG_BOARD_ATSTK1006 is not set
+ # CONFIG_BOARD_ATSTK100X_CUSTOM is not set
+ # CONFIG_BOARD_ATSTK100X_SPI1 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED8 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_RGB is not set
+ CONFIG_BOARD_ATSTK1000_EXTDAC=y
++# CONFIG_BOARD_ATSTK100X_ENABLE_AC97 is not set
++# CONFIG_BOARD_ATSTK1000_CF_HACKS is not set
++# CONFIG_BOARD_ATSTK100X_ENABLE_PSIF is not set
+ CONFIG_LOADER_U_BOOT=y
+ 
+ #
+@@ -132,6 +149,7 @@
+ # CONFIG_AP700X_32_BIT_SMC is not set
+ CONFIG_AP700X_16_BIT_SMC=y
+ # CONFIG_AP700X_8_BIT_SMC is not set
++CONFIG_GPIO_DEV=y
+ CONFIG_LOAD_ADDRESS=0x10000000
+ CONFIG_ENTRY_ADDRESS=0x90000000
+ CONFIG_PHYS_OFFSET=0x10000000
+@@ -157,16 +175,26 @@
+ CONFIG_ZONE_DMA_FLAG=0
+ CONFIG_VIRT_TO_BUS=y
+ # CONFIG_OWNERSHIP_TRACE is not set
++CONFIG_NMI_DEBUGGING=y
++CONFIG_DW_DMAC=y
+ # CONFIG_HZ_100 is not set
+ CONFIG_HZ_250=y
+ # CONFIG_HZ_300 is not set
+ # CONFIG_HZ_1000 is not set
+ CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
+ CONFIG_CMDLINE=""
+ 
+ #
+ # Power management options
+ #
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++CONFIG_PM=y
++# CONFIG_PM_LEGACY is not set
++# CONFIG_PM_DEBUG is not set
++CONFIG_PM_SLEEP=y
++CONFIG_SUSPEND=y
++CONFIG_SUSPEND_FREEZER=y
+ 
+ #
+ # CPU Frequency scaling
+@@ -175,9 +203,9 @@
+ CONFIG_CPU_FREQ_TABLE=y
+ # CONFIG_CPU_FREQ_DEBUG is not set
+ # CONFIG_CPU_FREQ_STAT is not set
+-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
++# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
++CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+ # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+ CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+ # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+@@ -260,6 +288,7 @@
+ # CONFIG_NET_PKTGEN is not set
+ # CONFIG_NET_TCPPROBE is not set
+ # CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
+ # CONFIG_IRDA is not set
+ # CONFIG_BT is not set
+ # CONFIG_AF_RXRPC is not set
+@@ -376,13 +405,18 @@
+ CONFIG_BLK_DEV_RAM=m
+ CONFIG_BLK_DEV_RAM_COUNT=16
+ CONFIG_BLK_DEV_RAM_SIZE=4096
+-CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
++# CONFIG_BLK_DEV_XIP is not set
+ # CONFIG_CDROM_PKTCDVD is not set
+ # CONFIG_ATA_OVER_ETH is not set
+ CONFIG_MISC_DEVICES=y
++CONFIG_ATMEL_PWM=m
++CONFIG_ATMEL_TCLIB=y
++CONFIG_ATMEL_TCB_CLKSRC=y
++CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
+ # CONFIG_EEPROM_93CX6 is not set
+ CONFIG_ATMEL_SSC=m
+-# CONFIG_IDE is not set
++# CONFIG_ENCLOSURE_SERVICES is not set
++# CONFIG_HAVE_IDE is not set
+ 
+ #
+ # SCSI device support
+@@ -427,6 +461,7 @@
+ # CONFIG_SCSI_DEBUG is not set
+ CONFIG_ATA=m
+ # CONFIG_ATA_NONSTANDARD is not set
++# CONFIG_SATA_MV is not set
+ CONFIG_PATA_AT32=m
+ # CONFIG_PATA_PLATFORM is not set
+ # CONFIG_MD is not set
+@@ -460,7 +495,6 @@
+ # CONFIG_PPPOL2TP is not set
+ # CONFIG_SLIP is not set
+ CONFIG_SLHC=m
+-# CONFIG_SHAPER is not set
+ # CONFIG_NETCONSOLE is not set
+ # CONFIG_NETPOLL is not set
+ # CONFIG_NET_POLL_CONTROLLER is not set
+@@ -528,6 +562,7 @@
+ #
+ CONFIG_SERIAL_ATMEL=y
+ CONFIG_SERIAL_ATMEL_CONSOLE=y
++CONFIG_SERIAL_ATMEL_PDC=y
+ # CONFIG_SERIAL_ATMEL_TTYAT is not set
+ CONFIG_SERIAL_CORE=y
+ CONFIG_SERIAL_CORE_CONSOLE=y
+@@ -535,8 +570,6 @@
+ # CONFIG_LEGACY_PTYS is not set
+ # CONFIG_IPMI_HANDLER is not set
+ # CONFIG_HW_RANDOM is not set
+-# CONFIG_RTC is not set
+-# CONFIG_GEN_RTC is not set
+ # CONFIG_R3964 is not set
+ # CONFIG_RAW_DRIVER is not set
+ # CONFIG_TCG_TPM is not set
+@@ -554,6 +587,7 @@
+ #
+ # I2C Hardware Bus support
+ #
++CONFIG_I2C_ATMELTWI=m
+ CONFIG_I2C_GPIO=m
+ # CONFIG_I2C_OCORES is not set
+ # CONFIG_I2C_PARPORT_LIGHT is not set
+@@ -564,13 +598,12 @@
+ #
+ # Miscellaneous I2C Chip support
+ #
+-# CONFIG_SENSORS_DS1337 is not set
+-# CONFIG_SENSORS_DS1374 is not set
+ # CONFIG_DS1682 is not set
+ # CONFIG_SENSORS_EEPROM is not set
+ # CONFIG_SENSORS_PCF8574 is not set
+-# CONFIG_SENSORS_PCA9539 is not set
++# CONFIG_PCF8575 is not set
+ # CONFIG_SENSORS_PCF8591 is not set
++# CONFIG_TPS65010 is not set
+ # CONFIG_SENSORS_MAX6875 is not set
+ # CONFIG_SENSORS_TSL2550 is not set
+ # CONFIG_I2C_DEBUG_CORE is not set
+@@ -597,9 +630,27 @@
+ # CONFIG_SPI_AT25 is not set
+ CONFIG_SPI_SPIDEV=m
+ # CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
 +
 +#
-+# Advanced Linux Sound Architecture
++# GPIO Support
 +#
-+CONFIG_SND=m
-+CONFIG_SND_TIMER=m
-+CONFIG_SND_PCM=m
-+# CONFIG_SND_SEQUENCER is not set
-+CONFIG_SND_OSSEMUL=y
-+CONFIG_SND_MIXER_OSS=m
-+CONFIG_SND_PCM_OSS=m
-+CONFIG_SND_PCM_OSS_PLUGINS=y
-+# CONFIG_SND_DYNAMIC_MINORS is not set
-+# CONFIG_SND_SUPPORT_OLD_API is not set
-+# CONFIG_SND_VERBOSE_PROCFS is not set
-+# CONFIG_SND_VERBOSE_PRINTK is not set
-+# CONFIG_SND_DEBUG is not set
++# CONFIG_DEBUG_GPIO is not set
 +
 +#
-+# Generic devices
++# I2C GPIO expanders:
 +#
-+CONFIG_SND_AC97_CODEC=m
-+# CONFIG_SND_DUMMY is not set
-+# CONFIG_SND_MTPAV is not set
-+# CONFIG_SND_SERIAL_U16550 is not set
-+# CONFIG_SND_MPU401 is not set
++# CONFIG_GPIO_PCA953X is not set
++# CONFIG_GPIO_PCF857X is not set
 +
 +#
-+# AVR32 devices
++# SPI GPIO expanders:
 +#
-+CONFIG_SND_ATMEL_AC97=m
++# CONFIG_GPIO_MCP23S08 is not set
+ # CONFIG_W1 is not set
+ # CONFIG_POWER_SUPPLY is not set
+ # CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
+ CONFIG_WATCHDOG=y
+ # CONFIG_WATCHDOG_NOWAYOUT is not set
  
+@@ -665,12 +716,18 @@
  #
--# USB support
-+# SPI devices
+ # Generic devices
  #
-+CONFIG_SND_AT73C213=m
-+CONFIG_SND_AT73C213_TARGET_BITRATE=48000
-+
-+#
-+# System on Chip audio support
++CONFIG_SND_AC97_CODEC=m
+ # CONFIG_SND_DUMMY is not set
+ # CONFIG_SND_MTPAV is not set
+ # CONFIG_SND_SERIAL_U16550 is not set
+ # CONFIG_SND_MPU401 is not set
+ 
+ #
++# AVR32 devices
 +#
-+# CONFIG_SND_SOC is not set
++CONFIG_SND_ATMEL_AC97=m
 +
 +#
-+# SoC Audio support for SuperH
+ # SPI devices
+ #
+ CONFIG_SND_AT73C213=m
+@@ -686,9 +743,14 @@
+ #
+ 
+ #
++# ALSA SoC audio for Freescale SOCs
 +#
 +
 +#
-+# Open Sound System
-+#
-+CONFIG_SOUND_PRIME=m
-+# CONFIG_SOUND_MSNDCLAS is not set
-+# CONFIG_SOUND_MSNDPIN is not set
-+CONFIG_SOUND_AT32_ABDAC=m
+ # Open Sound System
+ #
+ # CONFIG_SOUND_PRIME is not set
 +CONFIG_AC97_BUS=m
-+# CONFIG_HID_SUPPORT is not set
-+CONFIG_USB_SUPPORT=y
+ # CONFIG_HID_SUPPORT is not set
+ CONFIG_USB_SUPPORT=y
  # CONFIG_USB_ARCH_HAS_HCD is not set
- # CONFIG_USB_ARCH_HAS_OHCI is not set
- # CONFIG_USB_ARCH_HAS_EHCI is not set
-@@ -545,63 +796,137 @@
+@@ -698,10 +760,6 @@
  #
- # USB Gadget Support
+ # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
  #
--# CONFIG_USB_GADGET is not set
--# CONFIG_MMC is not set
 -
 -#
--# LED devices
+-# USB Gadget Support
 -#
--# CONFIG_NEW_LEDS is not set
-+CONFIG_USB_GADGET=y
-+# CONFIG_USB_GADGET_DEBUG is not set
-+# CONFIG_USB_GADGET_DEBUG_FILES is not set
-+# CONFIG_USB_GADGET_DEBUG_FS is not set
-+CONFIG_USB_GADGET_SELECTED=y
-+# CONFIG_USB_GADGET_AMD5536UDC is not set
-+CONFIG_USB_GADGET_ATMEL_USBA=y
-+CONFIG_USB_ATMEL_USBA=y
-+# CONFIG_USB_GADGET_FSL_USB2 is not set
-+# CONFIG_USB_GADGET_NET2280 is not set
-+# CONFIG_USB_GADGET_PXA2XX is not set
-+# CONFIG_USB_GADGET_M66592 is not set
-+# CONFIG_USB_GADGET_GOKU is not set
-+# CONFIG_USB_GADGET_LH7A40X is not set
-+# CONFIG_USB_GADGET_OMAP is not set
-+# CONFIG_USB_GADGET_S3C2410 is not set
-+# CONFIG_USB_GADGET_AT91 is not set
-+# CONFIG_USB_GADGET_DUMMY_HCD is not set
-+CONFIG_USB_GADGET_DUALSPEED=y
-+CONFIG_USB_ZERO=m
-+CONFIG_USB_ETH=m
-+CONFIG_USB_ETH_RNDIS=y
-+CONFIG_USB_GADGETFS=m
-+CONFIG_USB_FILE_STORAGE=m
-+# CONFIG_USB_FILE_STORAGE_TEST is not set
-+CONFIG_USB_G_SERIAL=m
-+# CONFIG_USB_MIDI_GADGET is not set
+ CONFIG_USB_GADGET=y
+ # CONFIG_USB_GADGET_DEBUG is not set
+ # CONFIG_USB_GADGET_DEBUG_FILES is not set
+@@ -729,27 +787,31 @@
+ # CONFIG_USB_FILE_STORAGE_TEST is not set
+ CONFIG_USB_G_SERIAL=m
+ # CONFIG_USB_MIDI_GADGET is not set
+-CONFIG_MMC=m
++# CONFIG_USB_G_PRINTER is not set
 +CONFIG_MMC=y
-+# CONFIG_MMC_DEBUG is not set
-+# CONFIG_MMC_UNSAFE_RESUME is not set
-+
-+#
-+# MMC/SD Card Drivers
-+#
-+CONFIG_MMC_BLOCK=y
-+# CONFIG_MMC_BLOCK_BOUNCE is not set
-+# CONFIG_SDIO_UART is not set
-+
-+#
-+# MMC/SD Host Controller Drivers
-+#
-+CONFIG_MMC_ATMELMCI=y
-+CONFIG_MMC_SPI=m
-+CONFIG_NEW_LEDS=y
-+CONFIG_LEDS_CLASS=m
+ # CONFIG_MMC_DEBUG is not set
+ # CONFIG_MMC_UNSAFE_RESUME is not set
  
  #
- # LED drivers
+ # MMC/SD Card Drivers
  #
-+CONFIG_LEDS_ATMEL_PWM=m
-+CONFIG_LEDS_GPIO=m
+-CONFIG_MMC_BLOCK=m
++CONFIG_MMC_BLOCK=y
+ # CONFIG_MMC_BLOCK_BOUNCE is not set
+ # CONFIG_SDIO_UART is not set
  
  #
- # LED Triggers
+ # MMC/SD Host Controller Drivers
  #
-+CONFIG_LEDS_TRIGGERS=y
-+CONFIG_LEDS_TRIGGER_TIMER=m
-+CONFIG_LEDS_TRIGGER_HEARTBEAT=m
-+CONFIG_RTC_LIB=y
-+CONFIG_RTC_CLASS=y
-+CONFIG_RTC_HCTOSYS=y
-+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
-+# CONFIG_RTC_DEBUG is not set
++CONFIG_MMC_ATMELMCI=y
+ CONFIG_MMC_SPI=m
++# CONFIG_MEMSTICK is not set
+ CONFIG_NEW_LEDS=y
+ CONFIG_LEDS_CLASS=y
  
  #
--# InfiniBand support
-+# RTC interfaces
+ # LED drivers
  #
-+CONFIG_RTC_INTF_SYSFS=y
-+CONFIG_RTC_INTF_PROC=y
-+CONFIG_RTC_INTF_DEV=y
-+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
-+# CONFIG_RTC_DRV_TEST is not set
++CONFIG_LEDS_ATMEL_PWM=m
+ CONFIG_LEDS_GPIO=y
  
  #
--# EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
-+# I2C RTC drivers
- #
-+# CONFIG_RTC_DRV_DS1307 is not set
-+# CONFIG_RTC_DRV_DS1374 is not set
-+# CONFIG_RTC_DRV_DS1672 is not set
-+# CONFIG_RTC_DRV_MAX6900 is not set
-+# CONFIG_RTC_DRV_RS5C372 is not set
-+# CONFIG_RTC_DRV_ISL1208 is not set
-+# CONFIG_RTC_DRV_X1205 is not set
-+# CONFIG_RTC_DRV_PCF8563 is not set
-+# CONFIG_RTC_DRV_PCF8583 is not set
-+# CONFIG_RTC_DRV_M41T80 is not set
+@@ -786,19 +848,22 @@
+ # CONFIG_RTC_DRV_PCF8563 is not set
+ # CONFIG_RTC_DRV_PCF8583 is not set
+ # CONFIG_RTC_DRV_M41T80 is not set
++# CONFIG_RTC_DRV_S35390A is not set
  
  #
--# Real Time Clock
-+# SPI RTC drivers
+ # SPI RTC drivers
  #
--# CONFIG_RTC_CLASS is not set
+-# CONFIG_RTC_DRV_RS5C348 is not set
+ # CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
 +# CONFIG_RTC_DRV_RS5C348 is not set
-+# CONFIG_RTC_DRV_MAX6902 is not set
  
  #
--# DMA Engine support
-+# Platform RTC drivers
+ # Platform RTC drivers
  #
--# CONFIG_DMA_ENGINE is not set
-+# CONFIG_RTC_DRV_DS1553 is not set
++# CONFIG_RTC_DRV_DS1511 is not set
+ # CONFIG_RTC_DRV_DS1553 is not set
+-# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_DS1742 is not set
 +# CONFIG_RTC_DRV_STK17TA8 is not set
-+# CONFIG_RTC_DRV_DS1742 is not set
-+# CONFIG_RTC_DRV_M48T86 is not set
-+# CONFIG_RTC_DRV_M48T59 is not set
-+# CONFIG_RTC_DRV_V3020 is not set
- 
- #
--# DMA Clients
-+# on-CPU RTC drivers
- #
-+CONFIG_RTC_DRV_AT32AP700X=y
- 
- #
--# DMA Devices
-+# Userspace I/O
- #
-+# CONFIG_UIO is not set
- 
+ # CONFIG_RTC_DRV_M48T86 is not set
+ # CONFIG_RTC_DRV_M48T59 is not set
+ # CONFIG_RTC_DRV_V3020 is not set
+@@ -816,13 +881,13 @@
  #
  # File systems
  #
@@ -2743,218 +2376,369 @@
 +CONFIG_EXT2_FS=y
  # CONFIG_EXT2_FS_XATTR is not set
  # CONFIG_EXT2_FS_XIP is not set
--# CONFIG_EXT3_FS is not set
+-CONFIG_EXT3_FS=m
 +CONFIG_EXT3_FS=y
-+# CONFIG_EXT3_FS_XATTR is not set
+ # CONFIG_EXT3_FS_XATTR is not set
  # CONFIG_EXT4DEV_FS is not set
+-CONFIG_JBD=m
 +CONFIG_JBD=y
-+# CONFIG_JBD_DEBUG is not set
+ # CONFIG_JBD_DEBUG is not set
  # CONFIG_REISERFS_FS is not set
  # CONFIG_JFS_FS is not set
- # CONFIG_FS_POSIX_ACL is not set
+@@ -830,12 +895,10 @@
  # CONFIG_XFS_FS is not set
  # CONFIG_GFS2_FS is not set
  # CONFIG_OCFS2_FS is not set
--CONFIG_MINIX_FS=m
-+# CONFIG_MINIX_FS is not set
- # CONFIG_ROMFS_FS is not set
+-# CONFIG_MINIX_FS is not set
+-# CONFIG_ROMFS_FS is not set
++# CONFIG_DNOTIFY is not set
  CONFIG_INOTIFY=y
  CONFIG_INOTIFY_USER=y
-@@ -609,7 +934,7 @@
- # CONFIG_DNOTIFY is not set
+ # CONFIG_QUOTA is not set
+-# CONFIG_DNOTIFY is not set
  # CONFIG_AUTOFS_FS is not set
  # CONFIG_AUTOFS4_FS is not set
--# CONFIG_FUSE_FS is not set
-+CONFIG_FUSE_FS=m
- 
- #
- # CD-ROM/DVD Filesystems
-@@ -637,8 +962,7 @@
+ CONFIG_FUSE_FS=m
+@@ -866,7 +929,7 @@
  CONFIG_TMPFS=y
  # CONFIG_TMPFS_POSIX_ACL is not set
  # CONFIG_HUGETLB_PAGE is not set
--CONFIG_RAMFS=y
 -CONFIG_CONFIGFS_FS=m
 +CONFIG_CONFIGFS_FS=y
  
  #
  # Miscellaneous filesystems
-@@ -652,11 +976,12 @@
- # CONFIG_EFS_FS is not set
- CONFIG_JFFS2_FS=y
- CONFIG_JFFS2_FS_DEBUG=0
--CONFIG_JFFS2_FS_WRITEBUFFER=y
-+# CONFIG_JFFS2_FS_WRITEBUFFER is not set
- # CONFIG_JFFS2_SUMMARY is not set
- # CONFIG_JFFS2_FS_XATTR is not set
- # CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
- CONFIG_JFFS2_ZLIB=y
-+# CONFIG_JFFS2_LZO is not set
- CONFIG_JFFS2_RTIME=y
+@@ -891,8 +954,10 @@
  # CONFIG_JFFS2_RUBIN is not set
  # CONFIG_CRAMFS is not set
-@@ -665,10 +990,7 @@
+ # CONFIG_VXFS_FS is not set
++# CONFIG_MINIX_FS is not set
+ # CONFIG_HPFS_FS is not set
  # CONFIG_QNX4FS_FS is not set
++# CONFIG_ROMFS_FS is not set
  # CONFIG_SYSV_FS is not set
  # CONFIG_UFS_FS is not set
--
--#
--# Network File Systems
--#
-+CONFIG_NETWORK_FILESYSTEMS=y
- CONFIG_NFS_FS=y
- CONFIG_NFS_V3=y
- # CONFIG_NFS_V3_ACL is not set
-@@ -688,17 +1010,12 @@
- # CONFIG_NCP_FS is not set
- # CONFIG_CODA_FS is not set
- # CONFIG_AFS_FS is not set
--# CONFIG_9P_FS is not set
- 
- #
- # Partition Types
- #
- # CONFIG_PARTITION_ADVANCED is not set
- CONFIG_MSDOS_PARTITION=y
--
--#
--# Native Language Support
--#
- CONFIG_NLS=m
- CONFIG_NLS_DEFAULT="iso8859-1"
- CONFIG_NLS_CODEPAGE_437=m
-@@ -739,17 +1056,18 @@
- # CONFIG_NLS_KOI8_R is not set
+ # CONFIG_NETWORK_FILESYSTEMS is not set
+@@ -943,11 +1008,6 @@
  # CONFIG_NLS_KOI8_U is not set
  CONFIG_NLS_UTF8=m
--
--#
--# Distributed Lock Manager
--#
  # CONFIG_DLM is not set
-+CONFIG_INSTRUMENTATION=y
-+CONFIG_PROFILING=y
-+CONFIG_OPROFILE=m
-+CONFIG_KPROBES=y
-+# CONFIG_MARKERS is not set
+-CONFIG_INSTRUMENTATION=y
+-CONFIG_PROFILING=y
+-CONFIG_OPROFILE=m
+-CONFIG_KPROBES=y
+-# CONFIG_MARKERS is not set
  
  #
  # Kernel hacking
- #
--CONFIG_TRACE_IRQFLAGS_SUPPORT=y
- # CONFIG_PRINTK_TIME is not set
-+CONFIG_ENABLE_WARN_DEPRECATED=y
- CONFIG_ENABLE_MUST_CHECK=y
- CONFIG_MAGIC_SYSRQ=y
- # CONFIG_UNUSED_SYMBOLS is not set
-@@ -758,12 +1076,17 @@
- CONFIG_DEBUG_KERNEL=y
- # CONFIG_DEBUG_SHIRQ is not set
- CONFIG_DETECT_SOFTLOCKUP=y
-+CONFIG_SCHED_DEBUG=y
+@@ -965,6 +1025,7 @@
+ CONFIG_SCHED_DEBUG=y
  # CONFIG_SCHEDSTATS is not set
  # CONFIG_TIMER_STATS is not set
-+# CONFIG_SLUB_DEBUG_ON is not set
++# CONFIG_SLUB_STATS is not set
  # CONFIG_DEBUG_RT_MUTEXES is not set
  # CONFIG_RT_MUTEX_TESTER is not set
  # CONFIG_DEBUG_SPINLOCK is not set
- # CONFIG_DEBUG_MUTEXES is not set
-+# CONFIG_DEBUG_LOCK_ALLOC is not set
-+# CONFIG_PROVE_LOCKING is not set
-+# CONFIG_LOCK_STAT is not set
- # CONFIG_DEBUG_SPINLOCK_SLEEP is not set
- # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
- # CONFIG_DEBUG_KOBJECT is not set
-@@ -771,22 +1094,63 @@
- # CONFIG_DEBUG_INFO is not set
- # CONFIG_DEBUG_VM is not set
+@@ -981,9 +1042,10 @@
  # CONFIG_DEBUG_LIST is not set
-+# CONFIG_DEBUG_SG is not set
+ # CONFIG_DEBUG_SG is not set
  CONFIG_FRAME_POINTER=y
- CONFIG_FORCED_INLINING=y
-+# CONFIG_BOOT_PRINTK_DELAY is not set
+-CONFIG_FORCED_INLINING=y
+ # CONFIG_BOOT_PRINTK_DELAY is not set
  # CONFIG_RCU_TORTURE_TEST is not set
-+# CONFIG_LKDTM is not set
++# CONFIG_KPROBES_SANITY_TEST is not set
++# CONFIG_BACKTRACE_SELF_TEST is not set
+ # CONFIG_LKDTM is not set
  # CONFIG_FAULT_INJECTION is not set
--# CONFIG_KPROBES is not set
-+# CONFIG_SAMPLES is not set
+ # CONFIG_SAMPLES is not set
+@@ -1009,6 +1071,7 @@
+ CONFIG_AUDIT_GENERIC=y
+ CONFIG_ZLIB_INFLATE=y
+ CONFIG_ZLIB_DEFLATE=y
++CONFIG_GENERIC_ALLOCATOR=y
+ CONFIG_PLIST=y
+ CONFIG_HAS_IOMEM=y
+ CONFIG_HAS_IOPORT=y
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atstk1004_defconfig avr32-2.6/arch/avr32/configs/atstk1004_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atstk1004_defconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/configs/atstk1004_defconfig	2008-06-12 15:09:38.719815350 +0200
+@@ -1,7 +1,7 @@
+ #
+ # Automatically generated make config: don't edit
+-# Linux kernel version: 2.6.24-rc7
+-# Wed Jan  9 23:04:20 2008
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:37:49 2008
+ #
+ CONFIG_AVR32=y
+ CONFIG_GENERIC_GPIO=y
+@@ -13,10 +13,10 @@
+ CONFIG_GENERIC_IRQ_PROBE=y
+ CONFIG_RWSEM_GENERIC_SPINLOCK=y
+ CONFIG_GENERIC_TIME=y
++CONFIG_GENERIC_CLOCKEVENTS=y
+ # CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+ # CONFIG_ARCH_HAS_ILOG2_U32 is not set
+ # CONFIG_ARCH_HAS_ILOG2_U64 is not set
+-CONFIG_ARCH_SUPPORTS_OPROFILE=y
+ CONFIG_GENERIC_HWEIGHT=y
+ CONFIG_GENERIC_CALIBRATE_DELAY=y
+ CONFIG_GENERIC_BUG=y
+@@ -34,15 +34,15 @@
+ # CONFIG_POSIX_MQUEUE is not set
+ # CONFIG_BSD_PROCESS_ACCT is not set
+ # CONFIG_TASKSTATS is not set
+-# CONFIG_USER_NS is not set
+-# CONFIG_PID_NS is not set
+ # CONFIG_AUDIT is not set
+ # CONFIG_IKCONFIG is not set
+ CONFIG_LOG_BUF_SHIFT=14
+ # CONFIG_CGROUPS is not set
+-# CONFIG_FAIR_GROUP_SCHED is not set
++# CONFIG_GROUP_SCHED is not set
+ CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
+ # CONFIG_RELAY is not set
++# CONFIG_NAMESPACES is not set
+ # CONFIG_BLK_DEV_INITRD is not set
+ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+ CONFIG_SYSCTL=y
+@@ -54,24 +54,37 @@
+ CONFIG_PRINTK=y
+ CONFIG_BUG=y
+ CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
+ # CONFIG_BASE_FULL is not set
+ # CONFIG_FUTEX is not set
+ # CONFIG_EPOLL is not set
+ # CONFIG_SIGNALFD is not set
++# CONFIG_TIMERFD is not set
+ # CONFIG_EVENTFD is not set
+ CONFIG_SHMEM=y
+ CONFIG_VM_EVENT_COUNTERS=y
+ # CONFIG_SLAB is not set
+ # CONFIG_SLUB is not set
+ CONFIG_SLOB=y
++# CONFIG_PROFILING is not set
++# CONFIG_MARKERS is not set
++CONFIG_HAVE_OPROFILE=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++# CONFIG_PROC_PAGE_MONITOR is not set
+ # CONFIG_TINY_SHMEM is not set
+ CONFIG_BASE_SMALL=1
+ # CONFIG_MODULES is not set
+ # CONFIG_BLOCK is not set
++CONFIG_CLASSIC_RCU=y
  
  #
- # Security options
+ # System Type and features
+ #
++# CONFIG_TICK_ONESHOT is not set
++# CONFIG_NO_HZ is not set
++# CONFIG_HIGH_RES_TIMERS is not set
++CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+ CONFIG_SUBARCH_AVR32B=y
+ CONFIG_MMU=y
+ CONFIG_PERFORMANCE_COUNTERS=y
+@@ -83,10 +96,14 @@
+ # CONFIG_BOARD_ATSTK1002 is not set
+ # CONFIG_BOARD_ATSTK1003 is not set
+ CONFIG_BOARD_ATSTK1004=y
++# CONFIG_BOARD_ATSTK1006 is not set
+ # CONFIG_BOARD_ATSTK100X_CUSTOM is not set
+ # CONFIG_BOARD_ATSTK100X_SPI1 is not set
+ # CONFIG_BOARD_ATSTK1000_J2_LED is not set
+ CONFIG_BOARD_ATSTK1000_EXTDAC=y
++# CONFIG_BOARD_ATSTK100X_ENABLE_AC97 is not set
++# CONFIG_BOARD_ATSTK1000_CF_HACKS is not set
++# CONFIG_BOARD_ATSTK100X_ENABLE_PSIF is not set
+ CONFIG_LOADER_U_BOOT=y
+ 
+ #
+@@ -95,6 +112,7 @@
+ # CONFIG_AP700X_32_BIT_SMC is not set
+ CONFIG_AP700X_16_BIT_SMC=y
+ # CONFIG_AP700X_8_BIT_SMC is not set
++# CONFIG_GPIO_DEV is not set
+ CONFIG_LOAD_ADDRESS=0x10000000
+ CONFIG_ENTRY_ADDRESS=0x90000000
+ CONFIG_PHYS_OFFSET=0x10000000
+@@ -120,34 +138,26 @@
+ CONFIG_ZONE_DMA_FLAG=0
+ CONFIG_VIRT_TO_BUS=y
+ # CONFIG_OWNERSHIP_TRACE is not set
++# CONFIG_NMI_DEBUGGING is not set
++CONFIG_DW_DMAC=y
+ # CONFIG_HZ_100 is not set
+ CONFIG_HZ_250=y
+ # CONFIG_HZ_300 is not set
+ # CONFIG_HZ_1000 is not set
+ CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
+ CONFIG_CMDLINE=""
+ 
+ #
+ # Power management options
+ #
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++# CONFIG_PM is not set
+ 
+ #
+ # CPU Frequency scaling
+ #
+-CONFIG_CPU_FREQ=y
+-CONFIG_CPU_FREQ_TABLE=y
+-# CONFIG_CPU_FREQ_DEBUG is not set
+-# CONFIG_CPU_FREQ_STAT is not set
+-CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
+-# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+-CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+-# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+-CONFIG_CPU_FREQ_GOV_USERSPACE=y
+-CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+-# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
+-CONFIG_CPU_FREQ_AT32AP=y
++# CONFIG_CPU_FREQ is not set
+ 
+ #
+ # Bus options
+@@ -222,6 +232,7 @@
+ #
+ # CONFIG_NET_PKTGEN is not set
+ # CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
+ # CONFIG_IRDA is not set
+ # CONFIG_BT is not set
+ # CONFIG_AF_RXRPC is not set
+@@ -321,6 +332,7 @@
+ # CONFIG_MTD_UBI is not set
+ # CONFIG_PARPORT is not set
+ # CONFIG_MISC_DEVICES is not set
++# CONFIG_HAVE_IDE is not set
+ 
+ #
+ # SCSI device support
+@@ -358,6 +370,7 @@
+ #
+ CONFIG_SERIAL_ATMEL=y
+ CONFIG_SERIAL_ATMEL_CONSOLE=y
++# CONFIG_SERIAL_ATMEL_PDC is not set
+ # CONFIG_SERIAL_ATMEL_TTYAT is not set
+ CONFIG_SERIAL_CORE=y
+ CONFIG_SERIAL_CORE_CONSOLE=y
+@@ -365,8 +378,6 @@
+ # CONFIG_LEGACY_PTYS is not set
+ # CONFIG_IPMI_HANDLER is not set
+ # CONFIG_HW_RANDOM is not set
+-# CONFIG_RTC is not set
+-# CONFIG_GEN_RTC is not set
+ # CONFIG_R3964 is not set
+ # CONFIG_TCG_TPM is not set
+ # CONFIG_I2C is not set
+@@ -389,9 +400,24 @@
+ # CONFIG_SPI_AT25 is not set
+ # CONFIG_SPI_SPIDEV is not set
+ # CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
++
++#
++# GPIO Support
++#
++
++#
++# I2C GPIO expanders:
++#
++
++#
++# SPI GPIO expanders:
++#
++# CONFIG_GPIO_MCP23S08 is not set
+ # CONFIG_W1 is not set
+ # CONFIG_POWER_SUPPLY is not set
+ # CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
+ CONFIG_WATCHDOG=y
+ # CONFIG_WATCHDOG_NOWAYOUT is not set
+ 
+@@ -471,10 +497,6 @@
+ #
+ # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
  #
- # CONFIG_KEYS is not set
- # CONFIG_SECURITY is not set
 -
 -#
--# Cryptographic options
+-# USB Gadget Support
 -#
--# CONFIG_CRYPTO is not set
-+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
-+CONFIG_CRYPTO=y
-+CONFIG_CRYPTO_ALGAPI=m
-+CONFIG_CRYPTO_BLKCIPHER=m
-+CONFIG_CRYPTO_HASH=m
-+CONFIG_CRYPTO_MANAGER=m
-+CONFIG_CRYPTO_HMAC=m
-+# CONFIG_CRYPTO_XCBC is not set
-+# CONFIG_CRYPTO_NULL is not set
-+# CONFIG_CRYPTO_MD4 is not set
-+CONFIG_CRYPTO_MD5=m
-+CONFIG_CRYPTO_SHA1=m
-+# CONFIG_CRYPTO_SHA256 is not set
-+# CONFIG_CRYPTO_SHA512 is not set
-+# CONFIG_CRYPTO_WP512 is not set
-+# CONFIG_CRYPTO_TGR192 is not set
-+# CONFIG_CRYPTO_GF128MUL is not set
-+# CONFIG_CRYPTO_ECB is not set
-+CONFIG_CRYPTO_CBC=m
-+# CONFIG_CRYPTO_PCBC is not set
-+# CONFIG_CRYPTO_LRW is not set
-+# CONFIG_CRYPTO_XTS is not set
-+# CONFIG_CRYPTO_CRYPTD is not set
-+CONFIG_CRYPTO_DES=m
-+# CONFIG_CRYPTO_FCRYPT is not set
-+# CONFIG_CRYPTO_BLOWFISH is not set
-+# CONFIG_CRYPTO_TWOFISH is not set
-+# CONFIG_CRYPTO_SERPENT is not set
-+# CONFIG_CRYPTO_AES is not set
-+# CONFIG_CRYPTO_CAST5 is not set
-+# CONFIG_CRYPTO_CAST6 is not set
-+# CONFIG_CRYPTO_TEA is not set
-+# CONFIG_CRYPTO_ARC4 is not set
-+# CONFIG_CRYPTO_KHAZAD is not set
-+# CONFIG_CRYPTO_ANUBIS is not set
-+# CONFIG_CRYPTO_SEED is not set
-+CONFIG_CRYPTO_DEFLATE=m
-+# CONFIG_CRYPTO_MICHAEL_MIC is not set
-+# CONFIG_CRYPTO_CRC32C is not set
-+# CONFIG_CRYPTO_CAMELLIA is not set
-+# CONFIG_CRYPTO_TEST is not set
-+# CONFIG_CRYPTO_AUTHENC is not set
-+# CONFIG_CRYPTO_HW is not set
+ CONFIG_USB_GADGET=y
+ # CONFIG_USB_GADGET_DEBUG_FILES is not set
+ CONFIG_USB_GADGET_SELECTED=y
+@@ -499,7 +521,9 @@
+ # CONFIG_USB_FILE_STORAGE is not set
+ # CONFIG_USB_G_SERIAL is not set
+ # CONFIG_USB_MIDI_GADGET is not set
++# CONFIG_USB_G_PRINTER is not set
+ # CONFIG_MMC is not set
++# CONFIG_MEMSTICK is not set
+ # CONFIG_NEW_LEDS is not set
+ CONFIG_RTC_LIB=y
+ CONFIG_RTC_CLASS=y
+@@ -519,15 +543,17 @@
+ #
+ # SPI RTC drivers
+ #
+-# CONFIG_RTC_DRV_RS5C348 is not set
+ # CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
++# CONFIG_RTC_DRV_RS5C348 is not set
  
  #
- # Library routines
-@@ -794,10 +1158,10 @@
- CONFIG_BITREVERSE=y
- CONFIG_CRC_CCITT=m
- # CONFIG_CRC16 is not set
--# CONFIG_CRC_ITU_T is not set
-+CONFIG_CRC_ITU_T=m
- CONFIG_CRC32=y
-+CONFIG_CRC7=m
+ # Platform RTC drivers
+ #
++# CONFIG_RTC_DRV_DS1511 is not set
+ # CONFIG_RTC_DRV_DS1553 is not set
+-# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_DS1742 is not set
++# CONFIG_RTC_DRV_STK17TA8 is not set
+ # CONFIG_RTC_DRV_M48T86 is not set
+ # CONFIG_RTC_DRV_M48T59 is not set
+ # CONFIG_RTC_DRV_V3020 is not set
+@@ -545,9 +571,9 @@
+ #
+ # File systems
+ #
++# CONFIG_DNOTIFY is not set
+ # CONFIG_INOTIFY is not set
+ # CONFIG_QUOTA is not set
+-# CONFIG_DNOTIFY is not set
+ # CONFIG_AUTOFS_FS is not set
+ # CONFIG_AUTOFS4_FS is not set
+ # CONFIG_FUSE_FS is not set
+@@ -580,7 +606,6 @@
+ # CONFIG_NETWORK_FILESYSTEMS is not set
+ # CONFIG_NLS is not set
+ # CONFIG_DLM is not set
+-# CONFIG_INSTRUMENTATION is not set
+ 
+ #
+ # Kernel hacking
+@@ -616,6 +641,7 @@
  # CONFIG_LIBCRC32C is not set
--CONFIG_AUDIT_GENERIC=y
  CONFIG_ZLIB_INFLATE=y
  CONFIG_ZLIB_DEFLATE=y
- CONFIG_PLIST=y
---- /dev/null
-+++ b/arch/avr32/configs/atstk1003_defconfig
-@@ -0,0 +1,1041 @@
++CONFIG_GENERIC_ALLOCATOR=y
+ CONFIG_HAS_IOMEM=y
+ CONFIG_HAS_IOPORT=y
+ CONFIG_HAS_DMA=y
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/configs/atstk1006_defconfig avr32-2.6/arch/avr32/configs/atstk1006_defconfig
+--- linux-2.6.25.6/arch/avr32/configs/atstk1006_defconfig	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/configs/atstk1006_defconfig	2008-06-12 15:09:38.719815350 +0200
+@@ -0,0 +1,1235 @@
 +#
 +# Automatically generated make config: don't edit
-+# Linux kernel version: 2.6.24
-+# Thu Mar  6 12:50:27 2008
++# Linux kernel version: 2.6.25.4
++# Wed Jun 11 15:40:45 2008
 +#
 +CONFIG_AVR32=y
 +CONFIG_GENERIC_GPIO=y
@@ -2970,7 +2754,6 @@
 +# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
 +# CONFIG_ARCH_HAS_ILOG2_U32 is not set
 +# CONFIG_ARCH_HAS_ILOG2_U64 is not set
-+CONFIG_ARCH_SUPPORTS_OPROFILE=y
 +CONFIG_GENERIC_HWEIGHT=y
 +CONFIG_GENERIC_CALIBRATE_DELAY=y
 +CONFIG_GENERIC_BUG=y
@@ -2988,22 +2771,17 @@
 +CONFIG_SYSVIPC=y
 +CONFIG_SYSVIPC_SYSCTL=y
 +CONFIG_POSIX_MQUEUE=y
-+CONFIG_BSD_PROCESS_ACCT=y
-+CONFIG_BSD_PROCESS_ACCT_V3=y
-+CONFIG_TASKSTATS=y
-+CONFIG_TASK_DELAY_ACCT=y
-+# CONFIG_TASK_XACCT is not set
-+# CONFIG_USER_NS is not set
-+# CONFIG_PID_NS is not set
-+CONFIG_AUDIT=y
++# CONFIG_BSD_PROCESS_ACCT is not set
++# CONFIG_TASKSTATS is not set
++# CONFIG_AUDIT is not set
 +# CONFIG_IKCONFIG is not set
 +CONFIG_LOG_BUF_SHIFT=14
 +# CONFIG_CGROUPS is not set
-+CONFIG_FAIR_GROUP_SCHED=y
-+CONFIG_FAIR_USER_SCHED=y
-+# CONFIG_FAIR_CGROUP_SCHED is not set
++# CONFIG_GROUP_SCHED is not set
 +CONFIG_SYSFS_DEPRECATED=y
++CONFIG_SYSFS_DEPRECATED_V2=y
 +CONFIG_RELAY=y
++# CONFIG_NAMESPACES is not set
 +CONFIG_BLK_DEV_INITRD=y
 +CONFIG_INITRAMFS_SOURCE=""
 +CONFIG_CC_OPTIMIZE_FOR_SIZE=y
@@ -3017,18 +2795,28 @@
 +CONFIG_PRINTK=y
 +CONFIG_BUG=y
 +CONFIG_ELF_CORE=y
++# CONFIG_COMPAT_BRK is not set
 +# CONFIG_BASE_FULL is not set
 +CONFIG_FUTEX=y
 +CONFIG_ANON_INODES=y
 +CONFIG_EPOLL=y
 +CONFIG_SIGNALFD=y
++CONFIG_TIMERFD=y
 +CONFIG_EVENTFD=y
 +CONFIG_SHMEM=y
 +CONFIG_VM_EVENT_COUNTERS=y
-+# CONFIG_SLUB_DEBUG is not set
++CONFIG_SLUB_DEBUG=y
 +# CONFIG_SLAB is not set
 +CONFIG_SLUB=y
 +# CONFIG_SLOB is not set
++CONFIG_PROFILING=y
++# CONFIG_MARKERS is not set
++CONFIG_OPROFILE=m
++CONFIG_HAVE_OPROFILE=y
++CONFIG_KPROBES=y
++CONFIG_HAVE_KPROBES=y
++# CONFIG_HAVE_KRETPROBES is not set
++CONFIG_PROC_PAGE_MONITOR=y
 +CONFIG_SLABINFO=y
 +CONFIG_RT_MUTEXES=y
 +# CONFIG_TINY_SHMEM is not set
@@ -3057,6 +2845,7 @@
 +CONFIG_DEFAULT_CFQ=y
 +# CONFIG_DEFAULT_NOOP is not set
 +CONFIG_DEFAULT_IOSCHED="cfq"
++CONFIG_CLASSIC_RCU=y
 +
 +#
 +# System Type and features
@@ -3070,12 +2859,13 @@
 +CONFIG_PERFORMANCE_COUNTERS=y
 +CONFIG_PLATFORM_AT32AP=y
 +CONFIG_CPU_AT32AP700X=y
-+CONFIG_CPU_AT32AP7001=y
++CONFIG_CPU_AT32AP7000=y
 +CONFIG_BOARD_ATSTK1000=y
 +# CONFIG_BOARD_ATNGW100 is not set
 +# CONFIG_BOARD_ATSTK1002 is not set
-+CONFIG_BOARD_ATSTK1003=y
++# CONFIG_BOARD_ATSTK1003 is not set
 +# CONFIG_BOARD_ATSTK1004 is not set
++CONFIG_BOARD_ATSTK1006=y
 +# CONFIG_BOARD_ATSTK100X_CUSTOM is not set
 +# CONFIG_BOARD_ATSTK100X_SPI1 is not set
 +# CONFIG_BOARD_ATSTK1000_J2_LED is not set
@@ -3126,11 +2916,19 @@
 +# CONFIG_HZ_300 is not set
 +# CONFIG_HZ_1000 is not set
 +CONFIG_HZ=250
++# CONFIG_SCHED_HRTICK is not set
 +CONFIG_CMDLINE=""
 +
 +#
 +# Power management options
 +#
++CONFIG_ARCH_SUSPEND_POSSIBLE=y
++CONFIG_PM=y
++# CONFIG_PM_LEGACY is not set
++# CONFIG_PM_DEBUG is not set
++CONFIG_PM_SLEEP=y
++CONFIG_SUSPEND=y
++CONFIG_SUSPEND_FREEZER=y
 +
 +#
 +# CPU Frequency scaling
@@ -3139,9 +2937,9 @@
 +CONFIG_CPU_FREQ_TABLE=y
 +# CONFIG_CPU_FREQ_DEBUG is not set
 +# CONFIG_CPU_FREQ_STAT is not set
-+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
++# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
 +# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
++CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
 +# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
 +CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
 +# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
@@ -3173,42 +2971,67 @@
 +CONFIG_PACKET=y
 +CONFIG_PACKET_MMAP=y
 +CONFIG_UNIX=y
-+# CONFIG_NET_KEY is not set
++CONFIG_XFRM=y
++CONFIG_XFRM_USER=m
++# CONFIG_XFRM_SUB_POLICY is not set
++# CONFIG_XFRM_MIGRATE is not set
++# CONFIG_XFRM_STATISTICS is not set
++CONFIG_NET_KEY=m
++# CONFIG_NET_KEY_MIGRATE is not set
 +CONFIG_INET=y
 +# CONFIG_IP_MULTICAST is not set
 +# CONFIG_IP_ADVANCED_ROUTER is not set
 +CONFIG_IP_FIB_HASH=y
-+# CONFIG_IP_PNP is not set
-+# CONFIG_NET_IPIP is not set
-+# CONFIG_NET_IPGRE is not set
++CONFIG_IP_PNP=y
++CONFIG_IP_PNP_DHCP=y
++# CONFIG_IP_PNP_BOOTP is not set
++# CONFIG_IP_PNP_RARP is not set
++CONFIG_NET_IPIP=m
++CONFIG_NET_IPGRE=m
 +# CONFIG_ARPD is not set
 +# CONFIG_SYN_COOKIES is not set
-+# CONFIG_INET_AH is not set
-+# CONFIG_INET_ESP is not set
++CONFIG_INET_AH=m
++CONFIG_INET_ESP=m
 +# CONFIG_INET_IPCOMP is not set
 +# CONFIG_INET_XFRM_TUNNEL is not set
-+# CONFIG_INET_TUNNEL is not set
-+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-+# CONFIG_INET_XFRM_MODE_BEET is not set
++CONFIG_INET_TUNNEL=m
++CONFIG_INET_XFRM_MODE_TRANSPORT=m
++CONFIG_INET_XFRM_MODE_TUNNEL=m
++CONFIG_INET_XFRM_MODE_BEET=m
 +# CONFIG_INET_LRO is not set
-+# CONFIG_INET_DIAG is not set
++CONFIG_INET_DIAG=y
++CONFIG_INET_TCP_DIAG=y
 +# CONFIG_TCP_CONG_ADVANCED is not set
 +CONFIG_TCP_CONG_CUBIC=y
 +CONFIG_DEFAULT_TCP_CONG="cubic"
 +# CONFIG_TCP_MD5SIG is not set
-+# CONFIG_IPV6 is not set
-+# CONFIG_INET6_XFRM_TUNNEL is not set
-+# CONFIG_INET6_TUNNEL is not set
++CONFIG_IPV6=m
++# CONFIG_IPV6_PRIVACY is not set
++# CONFIG_IPV6_ROUTER_PREF is not set
++# CONFIG_IPV6_OPTIMISTIC_DAD is not set
++CONFIG_INET6_AH=m
++CONFIG_INET6_ESP=m
++CONFIG_INET6_IPCOMP=m
++# CONFIG_IPV6_MIP6 is not set
++CONFIG_INET6_XFRM_TUNNEL=m
++CONFIG_INET6_TUNNEL=m
++CONFIG_INET6_XFRM_MODE_TRANSPORT=m
++CONFIG_INET6_XFRM_MODE_TUNNEL=m
++CONFIG_INET6_XFRM_MODE_BEET=m
++# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
++CONFIG_IPV6_SIT=m
++CONFIG_IPV6_TUNNEL=m
++# CONFIG_IPV6_MULTIPLE_TABLES is not set
 +# CONFIG_NETWORK_SECMARK is not set
 +# CONFIG_NETFILTER is not set
 +# CONFIG_IP_DCCP is not set
 +# CONFIG_IP_SCTP is not set
 +# CONFIG_TIPC is not set
 +# CONFIG_ATM is not set
-+# CONFIG_BRIDGE is not set
++CONFIG_BRIDGE=m
 +# CONFIG_VLAN_8021Q is not set
 +# CONFIG_DECNET is not set
++CONFIG_LLC=m
 +# CONFIG_LLC2 is not set
 +# CONFIG_IPX is not set
 +# CONFIG_ATALK is not set
@@ -3224,6 +3047,7 @@
 +# CONFIG_NET_PKTGEN is not set
 +# CONFIG_NET_TCPPROBE is not set
 +# CONFIG_HAMRADIO is not set
++# CONFIG_CAN is not set
 +# CONFIG_IRDA is not set
 +# CONFIG_BT is not set
 +# CONFIG_AF_RXRPC is not set
@@ -3324,13 +3148,32 @@
 +# CONFIG_MTD_DOC2000 is not set
 +# CONFIG_MTD_DOC2001 is not set
 +# CONFIG_MTD_DOC2001PLUS is not set
-+# CONFIG_MTD_NAND is not set
++CONFIG_MTD_NAND=y
++# CONFIG_MTD_NAND_VERIFY_WRITE is not set
++# CONFIG_MTD_NAND_ECC_SMC is not set
++# CONFIG_MTD_NAND_MUSEUM_IDS is not set
++CONFIG_MTD_NAND_IDS=y
++# CONFIG_MTD_NAND_DISKONCHIP is not set
++CONFIG_MTD_NAND_ATMEL=y
++CONFIG_MTD_NAND_ATMEL_ECC_HW=y
++# CONFIG_MTD_NAND_ATMEL_ECC_SOFT is not set
++# CONFIG_MTD_NAND_ATMEL_ECC_NONE is not set
++# CONFIG_MTD_NAND_NANDSIM is not set
++# CONFIG_MTD_NAND_PLATFORM is not set
 +# CONFIG_MTD_ONENAND is not set
 +
 +#
 +# UBI - Unsorted block images
 +#
-+# CONFIG_MTD_UBI is not set
++CONFIG_MTD_UBI=m
++CONFIG_MTD_UBI_WL_THRESHOLD=4096
++CONFIG_MTD_UBI_BEB_RESERVE=1
++CONFIG_MTD_UBI_GLUEBI=y
++
++#
++# UBI debugging options
++#
++# CONFIG_MTD_UBI_DEBUG is not set
 +# CONFIG_PARPORT is not set
 +CONFIG_BLK_DEV=y
 +# CONFIG_BLK_DEV_COW_COMMON is not set
@@ -3340,7 +3183,7 @@
 +CONFIG_BLK_DEV_RAM=m
 +CONFIG_BLK_DEV_RAM_COUNT=16
 +CONFIG_BLK_DEV_RAM_SIZE=4096
-+CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
++# CONFIG_BLK_DEV_XIP is not set
 +# CONFIG_CDROM_PKTCDVD is not set
 +# CONFIG_ATA_OVER_ETH is not set
 +CONFIG_MISC_DEVICES=y
@@ -3350,7 +3193,8 @@
 +CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
 +# CONFIG_EEPROM_93CX6 is not set
 +CONFIG_ATMEL_SSC=m
-+# CONFIG_IDE is not set
++# CONFIG_ENCLOSURE_SERVICES is not set
++# CONFIG_HAVE_IDE is not set
 +
 +#
 +# SCSI device support
@@ -3390,11 +3234,10 @@
 +# CONFIG_SCSI_ISCSI_ATTRS is not set
 +# CONFIG_SCSI_SAS_LIBSAS is not set
 +# CONFIG_SCSI_SRP_ATTRS is not set
-+CONFIG_SCSI_LOWLEVEL=y
-+# CONFIG_ISCSI_TCP is not set
-+# CONFIG_SCSI_DEBUG is not set
++# CONFIG_SCSI_LOWLEVEL is not set
 +CONFIG_ATA=m
 +# CONFIG_ATA_NONSTANDARD is not set
++# CONFIG_SATA_MV is not set
 +CONFIG_PATA_AT32=m
 +# CONFIG_PATA_PLATFORM is not set
 +# CONFIG_MD is not set
@@ -3404,9 +3247,34 @@
 +# CONFIG_BONDING is not set
 +# CONFIG_MACVLAN is not set
 +# CONFIG_EQUALIZER is not set
-+# CONFIG_TUN is not set
++CONFIG_TUN=m
 +# CONFIG_VETH is not set
-+# CONFIG_NET_ETHERNET is not set
++CONFIG_PHYLIB=y
++
++#
++# MII PHY device drivers
++#
++# CONFIG_MARVELL_PHY is not set
++# CONFIG_DAVICOM_PHY is not set
++# CONFIG_QSEMI_PHY is not set
++# CONFIG_LXT_PHY is not set
++# CONFIG_CICADA_PHY is not set
++# CONFIG_VITESSE_PHY is not set
++# CONFIG_SMSC_PHY is not set
++# CONFIG_BROADCOM_PHY is not set
++# CONFIG_ICPLUS_PHY is not set
++# CONFIG_REALTEK_PHY is not set
++# CONFIG_FIXED_PHY is not set
++# CONFIG_MDIO_BITBANG is not set
++CONFIG_NET_ETHERNET=y
++# CONFIG_MII is not set
++CONFIG_MACB=y
++# CONFIG_ENC28J60 is not set
++# CONFIG_IBM_NEW_EMAC_ZMII is not set
++# CONFIG_IBM_NEW_EMAC_RGMII is not set
++# CONFIG_IBM_NEW_EMAC_TAH is not set
++# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
++# CONFIG_B44 is not set
 +# CONFIG_NETDEV_1000 is not set
 +# CONFIG_NETDEV_10000 is not set
 +
@@ -3428,7 +3296,6 @@
 +# CONFIG_PPPOL2TP is not set
 +# CONFIG_SLIP is not set
 +CONFIG_SLHC=m
-+# CONFIG_SHAPER is not set
 +# CONFIG_NETCONSOLE is not set
 +# CONFIG_NETPOLL is not set
 +# CONFIG_NET_POLL_CONTROLLER is not set
@@ -3450,7 +3317,7 @@
 +CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
 +CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
 +# CONFIG_INPUT_JOYDEV is not set
-+# CONFIG_INPUT_EVDEV is not set
++CONFIG_INPUT_EVDEV=m
 +# CONFIG_INPUT_EVBUG is not set
 +
 +#
@@ -3504,8 +3371,6 @@
 +# CONFIG_LEGACY_PTYS is not set
 +# CONFIG_IPMI_HANDLER is not set
 +# CONFIG_HW_RANDOM is not set
-+# CONFIG_RTC is not set
-+# CONFIG_GEN_RTC is not set
 +# CONFIG_R3964 is not set
 +# CONFIG_RAW_DRIVER is not set
 +# CONFIG_TCG_TPM is not set
@@ -3534,13 +3399,12 @@
 +#
 +# Miscellaneous I2C Chip support
 +#
-+# CONFIG_SENSORS_DS1337 is not set
-+# CONFIG_SENSORS_DS1374 is not set
 +# CONFIG_DS1682 is not set
 +# CONFIG_SENSORS_EEPROM is not set
 +# CONFIG_SENSORS_PCF8574 is not set
-+# CONFIG_SENSORS_PCA9539 is not set
++# CONFIG_PCF8575 is not set
 +# CONFIG_SENSORS_PCF8591 is not set
++# CONFIG_TPS65010 is not set
 +# CONFIG_SENSORS_MAX6875 is not set
 +# CONFIG_SENSORS_TSL2550 is not set
 +# CONFIG_I2C_DEBUG_CORE is not set
@@ -3567,9 +3431,27 @@
 +# CONFIG_SPI_AT25 is not set
 +CONFIG_SPI_SPIDEV=m
 +# CONFIG_SPI_TLE62X0 is not set
++CONFIG_HAVE_GPIO_LIB=y
++
++#
++# GPIO Support
++#
++# CONFIG_DEBUG_GPIO is not set
++
++#
++# I2C GPIO expanders:
++#
++# CONFIG_GPIO_PCA953X is not set
++# CONFIG_GPIO_PCF857X is not set
++
++#
++# SPI GPIO expanders:
++#
++# CONFIG_GPIO_MCP23S08 is not set
 +# CONFIG_W1 is not set
 +# CONFIG_POWER_SUPPLY is not set
 +# CONFIG_HWMON is not set
++# CONFIG_THERMAL is not set
 +CONFIG_WATCHDOG=y
 +# CONFIG_WATCHDOG_NOWAYOUT is not set
 +
@@ -3602,13 +3484,40 @@
 +#
 +# CONFIG_VGASTATE is not set
 +# CONFIG_VIDEO_OUTPUT_CONTROL is not set
-+# CONFIG_FB is not set
-+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
++CONFIG_FB=y
++# CONFIG_FIRMWARE_EDID is not set
++# CONFIG_FB_DDC is not set
++CONFIG_FB_CFB_FILLRECT=y
++CONFIG_FB_CFB_COPYAREA=y
++CONFIG_FB_CFB_IMAGEBLIT=y
++# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
++# CONFIG_FB_SYS_FILLRECT is not set
++# CONFIG_FB_SYS_COPYAREA is not set
++# CONFIG_FB_SYS_IMAGEBLIT is not set
++# CONFIG_FB_SYS_FOPS is not set
++CONFIG_FB_DEFERRED_IO=y
++# CONFIG_FB_SVGALIB is not set
++# CONFIG_FB_MACMODES is not set
++# CONFIG_FB_BACKLIGHT is not set
++# CONFIG_FB_MODE_HELPERS is not set
++# CONFIG_FB_TILEBLITTING is not set
++
++#
++# Frame buffer hardware drivers
++#
++# CONFIG_FB_S1D13XXX is not set
++CONFIG_FB_ATMEL=y
++# CONFIG_FB_VIRTUAL is not set
++CONFIG_BACKLIGHT_LCD_SUPPORT=y
++CONFIG_LCD_CLASS_DEVICE=y
++CONFIG_LCD_LTV350QV=y
++# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
 +
 +#
 +# Display device support
 +#
 +# CONFIG_DISPLAY_SUPPORT is not set
++# CONFIG_LOGO is not set
 +
 +#
 +# Sound
@@ -3627,8 +3536,8 @@
 +CONFIG_SND_PCM_OSS=m
 +CONFIG_SND_PCM_OSS_PLUGINS=y
 +# CONFIG_SND_DYNAMIC_MINORS is not set
-+CONFIG_SND_SUPPORT_OLD_API=y
-+CONFIG_SND_VERBOSE_PROCFS=y
++# CONFIG_SND_SUPPORT_OLD_API is not set
++# CONFIG_SND_VERBOSE_PROCFS is not set
 +# CONFIG_SND_VERBOSE_PRINTK is not set
 +# CONFIG_SND_DEBUG is not set
 +
@@ -3662,6 +3571,10 @@
 +#
 +
 +#
++# ALSA SoC audio for Freescale SOCs
++#
++
++#
 +# Open Sound System
 +#
 +# CONFIG_SOUND_PRIME is not set
@@ -3675,14 +3588,10 @@
 +#
 +# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
 +#
-+
-+#
-+# USB Gadget Support
-+#
 +CONFIG_USB_GADGET=y
 +# CONFIG_USB_GADGET_DEBUG is not set
 +# CONFIG_USB_GADGET_DEBUG_FILES is not set
-+CONFIG_USB_GADGET_DEBUG_FS=y
++# CONFIG_USB_GADGET_DEBUG_FS is not set
 +CONFIG_USB_GADGET_SELECTED=y
 +# CONFIG_USB_GADGET_AMD5536UDC is not set
 +CONFIG_USB_GADGET_ATMEL_USBA=y
@@ -3706,6 +3615,7 @@
 +# CONFIG_USB_FILE_STORAGE_TEST is not set
 +CONFIG_USB_G_SERIAL=m
 +# CONFIG_USB_MIDI_GADGET is not set
++# CONFIG_USB_G_PRINTER is not set
 +CONFIG_MMC=y
 +# CONFIG_MMC_DEBUG is not set
 +# CONFIG_MMC_UNSAFE_RESUME is not set
@@ -3714,7 +3624,7 @@
 +# MMC/SD Card Drivers
 +#
 +CONFIG_MMC_BLOCK=y
-+# CONFIG_MMC_BLOCK_BOUNCE is not set
++CONFIG_MMC_BLOCK_BOUNCE=y
 +# CONFIG_SDIO_UART is not set
 +
 +#
@@ -3722,21 +3632,22 @@
 +#
 +CONFIG_MMC_ATMELMCI=y
 +CONFIG_MMC_SPI=m
++# CONFIG_MEMSTICK is not set
 +CONFIG_NEW_LEDS=y
-+CONFIG_LEDS_CLASS=y
++CONFIG_LEDS_CLASS=m
 +
 +#
 +# LED drivers
 +#
 +CONFIG_LEDS_ATMEL_PWM=m
-+CONFIG_LEDS_GPIO=y
++CONFIG_LEDS_GPIO=m
 +
 +#
 +# LED Triggers
 +#
 +CONFIG_LEDS_TRIGGERS=y
-+CONFIG_LEDS_TRIGGER_TIMER=y
-+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
++CONFIG_LEDS_TRIGGER_TIMER=m
++CONFIG_LEDS_TRIGGER_HEARTBEAT=m
 +CONFIG_RTC_LIB=y
 +CONFIG_RTC_CLASS=y
 +CONFIG_RTC_HCTOSYS=y
@@ -3765,19 +3676,22 @@
 +# CONFIG_RTC_DRV_PCF8563 is not set
 +# CONFIG_RTC_DRV_PCF8583 is not set
 +# CONFIG_RTC_DRV_M41T80 is not set
++# CONFIG_RTC_DRV_S35390A is not set
 +
 +#
 +# SPI RTC drivers
 +#
-+# CONFIG_RTC_DRV_RS5C348 is not set
 +# CONFIG_RTC_DRV_MAX6902 is not set
++# CONFIG_RTC_DRV_R9701 is not set
++# CONFIG_RTC_DRV_RS5C348 is not set
 +
 +#
 +# Platform RTC drivers
 +#
++# CONFIG_RTC_DRV_DS1511 is not set
 +# CONFIG_RTC_DRV_DS1553 is not set
-+# CONFIG_RTC_DRV_STK17TA8 is not set
 +# CONFIG_RTC_DRV_DS1742 is not set
++# CONFIG_RTC_DRV_STK17TA8 is not set
 +# CONFIG_RTC_DRV_M48T86 is not set
 +# CONFIG_RTC_DRV_M48T59 is not set
 +# CONFIG_RTC_DRV_V3020 is not set
@@ -3790,18 +3704,18 @@
 +#
 +# Userspace I/O
 +#
-+CONFIG_UIO=m
++# CONFIG_UIO is not set
 +
 +#
 +# File systems
 +#
-+CONFIG_EXT2_FS=m
++CONFIG_EXT2_FS=y
 +# CONFIG_EXT2_FS_XATTR is not set
 +# CONFIG_EXT2_FS_XIP is not set
-+CONFIG_EXT3_FS=m
++CONFIG_EXT3_FS=y
 +# CONFIG_EXT3_FS_XATTR is not set
 +# CONFIG_EXT4DEV_FS is not set
-+CONFIG_JBD=m
++CONFIG_JBD=y
 +# CONFIG_JBD_DEBUG is not set
 +# CONFIG_REISERFS_FS is not set
 +# CONFIG_JFS_FS is not set
@@ -3809,12 +3723,10 @@
 +# CONFIG_XFS_FS is not set
 +# CONFIG_GFS2_FS is not set
 +# CONFIG_OCFS2_FS is not set
-+# CONFIG_MINIX_FS is not set
-+# CONFIG_ROMFS_FS is not set
++# CONFIG_DNOTIFY is not set
 +CONFIG_INOTIFY=y
 +CONFIG_INOTIFY_USER=y
 +# CONFIG_QUOTA is not set
-+# CONFIG_DNOTIFY is not set
 +# CONFIG_AUTOFS_FS is not set
 +# CONFIG_AUTOFS4_FS is not set
 +CONFIG_FUSE_FS=m
@@ -3859,8 +3771,7 @@
 +# CONFIG_EFS_FS is not set
 +CONFIG_JFFS2_FS=y
 +CONFIG_JFFS2_FS_DEBUG=0
-+CONFIG_JFFS2_FS_WRITEBUFFER=y
-+# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
++# CONFIG_JFFS2_FS_WRITEBUFFER is not set
 +# CONFIG_JFFS2_SUMMARY is not set
 +# CONFIG_JFFS2_FS_XATTR is not set
 +# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
@@ -3870,11 +3781,32 @@
 +# CONFIG_JFFS2_RUBIN is not set
 +# CONFIG_CRAMFS is not set
 +# CONFIG_VXFS_FS is not set
++CONFIG_MINIX_FS=m
 +# CONFIG_HPFS_FS is not set
 +# CONFIG_QNX4FS_FS is not set
++# CONFIG_ROMFS_FS is not set
 +# CONFIG_SYSV_FS is not set
 +# CONFIG_UFS_FS is not set
-+# CONFIG_NETWORK_FILESYSTEMS is not set
++CONFIG_NETWORK_FILESYSTEMS=y
++CONFIG_NFS_FS=y
++CONFIG_NFS_V3=y
++# CONFIG_NFS_V3_ACL is not set
++# CONFIG_NFS_V4 is not set
++# CONFIG_NFS_DIRECTIO is not set
++# CONFIG_NFSD is not set
++CONFIG_ROOT_NFS=y
++CONFIG_LOCKD=y
++CONFIG_LOCKD_V4=y
++CONFIG_NFS_COMMON=y
++CONFIG_SUNRPC=y
++# CONFIG_SUNRPC_BIND34 is not set
++# CONFIG_RPCSEC_GSS_KRB5 is not set
++# CONFIG_RPCSEC_GSS_SPKM3 is not set
++# CONFIG_SMB_FS is not set
++# CONFIG_CIFS is not set
++# CONFIG_NCP_FS is not set
++# CONFIG_CODA_FS is not set
++# CONFIG_AFS_FS is not set
 +
 +#
 +# Partition Types
@@ -3922,11 +3854,6 @@
 +# CONFIG_NLS_KOI8_U is not set
 +CONFIG_NLS_UTF8=m
 +# CONFIG_DLM is not set
-+CONFIG_INSTRUMENTATION=y
-+CONFIG_PROFILING=y
-+CONFIG_OPROFILE=m
-+CONFIG_KPROBES=y
-+# CONFIG_MARKERS is not set
 +
 +#
 +# Kernel hacking
@@ -3944,6 +3871,8 @@
 +CONFIG_SCHED_DEBUG=y
 +# CONFIG_SCHEDSTATS is not set
 +# CONFIG_TIMER_STATS is not set
++# CONFIG_SLUB_DEBUG_ON is not set
++# CONFIG_SLUB_STATS is not set
 +# CONFIG_DEBUG_RT_MUTEXES is not set
 +# CONFIG_RT_MUTEX_TESTER is not set
 +# CONFIG_DEBUG_SPINLOCK is not set
@@ -3960,9 +3889,10 @@
 +# CONFIG_DEBUG_LIST is not set
 +# CONFIG_DEBUG_SG is not set
 +CONFIG_FRAME_POINTER=y
-+CONFIG_FORCED_INLINING=y
 +# CONFIG_BOOT_PRINTK_DELAY is not set
 +# CONFIG_RCU_TORTURE_TEST is not set
++# CONFIG_KPROBES_SANITY_TEST is not set
++# CONFIG_BACKTRACE_SELF_TEST is not set
 +# CONFIG_LKDTM is not set
 +# CONFIG_FAULT_INJECTION is not set
 +# CONFIG_SAMPLES is not set
@@ -3973,7 +3903,55 @@
 +# CONFIG_KEYS is not set
 +# CONFIG_SECURITY is not set
 +# CONFIG_SECURITY_FILE_CAPABILITIES is not set
-+# CONFIG_CRYPTO is not set
++CONFIG_CRYPTO=y
++CONFIG_CRYPTO_ALGAPI=m
++CONFIG_CRYPTO_AEAD=m
++CONFIG_CRYPTO_BLKCIPHER=m
++# CONFIG_CRYPTO_SEQIV is not set
++CONFIG_CRYPTO_HASH=m
++CONFIG_CRYPTO_MANAGER=m
++CONFIG_CRYPTO_HMAC=m
++# CONFIG_CRYPTO_XCBC is not set
++# CONFIG_CRYPTO_NULL is not set
++# CONFIG_CRYPTO_MD4 is not set
++CONFIG_CRYPTO_MD5=m
++CONFIG_CRYPTO_SHA1=m
++# CONFIG_CRYPTO_SHA256 is not set
++# CONFIG_CRYPTO_SHA512 is not set
++# CONFIG_CRYPTO_WP512 is not set
++# CONFIG_CRYPTO_TGR192 is not set
++# CONFIG_CRYPTO_GF128MUL is not set
++# CONFIG_CRYPTO_ECB is not set
++CONFIG_CRYPTO_CBC=m
++# CONFIG_CRYPTO_PCBC is not set
++# CONFIG_CRYPTO_LRW is not set
++# CONFIG_CRYPTO_XTS is not set
++# CONFIG_CRYPTO_CTR is not set
++# CONFIG_CRYPTO_GCM is not set
++# CONFIG_CRYPTO_CCM is not set
++# CONFIG_CRYPTO_CRYPTD is not set
++CONFIG_CRYPTO_DES=m
++# CONFIG_CRYPTO_FCRYPT is not set
++# CONFIG_CRYPTO_BLOWFISH is not set
++# CONFIG_CRYPTO_TWOFISH is not set
++# CONFIG_CRYPTO_SERPENT is not set
++# CONFIG_CRYPTO_AES is not set
++# CONFIG_CRYPTO_CAST5 is not set
++# CONFIG_CRYPTO_CAST6 is not set
++# CONFIG_CRYPTO_TEA is not set
++# CONFIG_CRYPTO_ARC4 is not set
++# CONFIG_CRYPTO_KHAZAD is not set
++# CONFIG_CRYPTO_ANUBIS is not set
++# CONFIG_CRYPTO_SEED is not set
++# CONFIG_CRYPTO_SALSA20 is not set
++CONFIG_CRYPTO_DEFLATE=m
++# CONFIG_CRYPTO_MICHAEL_MIC is not set
++# CONFIG_CRYPTO_CRC32C is not set
++# CONFIG_CRYPTO_CAMELLIA is not set
++# CONFIG_CRYPTO_TEST is not set
++CONFIG_CRYPTO_AUTHENC=m
++# CONFIG_CRYPTO_LZO is not set
++# CONFIG_CRYPTO_HW is not set
 +
 +#
 +# Library routines
@@ -3985,657 +3963,16 @@
 +CONFIG_CRC32=y
 +CONFIG_CRC7=m
 +# CONFIG_LIBCRC32C is not set
-+CONFIG_AUDIT_GENERIC=y
 +CONFIG_ZLIB_INFLATE=y
 +CONFIG_ZLIB_DEFLATE=y
++CONFIG_GENERIC_ALLOCATOR=y
 +CONFIG_PLIST=y
 +CONFIG_HAS_IOMEM=y
 +CONFIG_HAS_IOPORT=y
 +CONFIG_HAS_DMA=y
---- /dev/null
-+++ b/arch/avr32/configs/atstk1004_defconfig
-@@ -0,0 +1,639 @@
-+#
-+# Automatically generated make config: don't edit
-+# Linux kernel version: 2.6.24
-+# Thu Mar  6 12:51:05 2008
-+#
-+CONFIG_AVR32=y
-+CONFIG_GENERIC_GPIO=y
-+CONFIG_GENERIC_HARDIRQS=y
-+CONFIG_STACKTRACE_SUPPORT=y
-+CONFIG_LOCKDEP_SUPPORT=y
-+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
-+CONFIG_HARDIRQS_SW_RESEND=y
-+CONFIG_GENERIC_IRQ_PROBE=y
-+CONFIG_RWSEM_GENERIC_SPINLOCK=y
-+CONFIG_GENERIC_TIME=y
-+CONFIG_GENERIC_CLOCKEVENTS=y
-+# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
-+# CONFIG_ARCH_HAS_ILOG2_U32 is not set
-+# CONFIG_ARCH_HAS_ILOG2_U64 is not set
-+CONFIG_ARCH_SUPPORTS_OPROFILE=y
-+CONFIG_GENERIC_HWEIGHT=y
-+CONFIG_GENERIC_CALIBRATE_DELAY=y
-+CONFIG_GENERIC_BUG=y
-+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
-+
-+#
-+# General setup
-+#
-+CONFIG_EXPERIMENTAL=y
-+CONFIG_BROKEN_ON_SMP=y
-+CONFIG_INIT_ENV_ARG_LIMIT=32
-+CONFIG_LOCALVERSION=""
-+# CONFIG_LOCALVERSION_AUTO is not set
-+# CONFIG_SYSVIPC is not set
-+# CONFIG_POSIX_MQUEUE is not set
-+# CONFIG_BSD_PROCESS_ACCT is not set
-+# CONFIG_TASKSTATS is not set
-+# CONFIG_USER_NS is not set
-+# CONFIG_PID_NS is not set
-+# CONFIG_AUDIT is not set
-+# CONFIG_IKCONFIG is not set
-+CONFIG_LOG_BUF_SHIFT=14
-+# CONFIG_CGROUPS is not set
-+# CONFIG_FAIR_GROUP_SCHED is not set
-+CONFIG_SYSFS_DEPRECATED=y
-+# CONFIG_RELAY is not set
-+# CONFIG_BLK_DEV_INITRD is not set
-+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
-+CONFIG_SYSCTL=y
-+CONFIG_EMBEDDED=y
-+# CONFIG_SYSCTL_SYSCALL is not set
-+CONFIG_KALLSYMS=y
-+# CONFIG_KALLSYMS_EXTRA_PASS is not set
-+CONFIG_HOTPLUG=y
-+CONFIG_PRINTK=y
-+CONFIG_BUG=y
-+CONFIG_ELF_CORE=y
-+# CONFIG_BASE_FULL is not set
-+# CONFIG_FUTEX is not set
-+# CONFIG_EPOLL is not set
-+# CONFIG_SIGNALFD is not set
-+# CONFIG_EVENTFD is not set
-+CONFIG_SHMEM=y
-+CONFIG_VM_EVENT_COUNTERS=y
-+# CONFIG_SLAB is not set
-+# CONFIG_SLUB is not set
-+CONFIG_SLOB=y
-+# CONFIG_TINY_SHMEM is not set
-+CONFIG_BASE_SMALL=1
-+# CONFIG_MODULES is not set
-+# CONFIG_BLOCK is not set
-+
-+#
-+# System Type and features
-+#
-+CONFIG_TICK_ONESHOT=y
-+CONFIG_NO_HZ=y
-+CONFIG_HIGH_RES_TIMERS=y
-+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
-+CONFIG_SUBARCH_AVR32B=y
-+CONFIG_MMU=y
-+CONFIG_PERFORMANCE_COUNTERS=y
-+CONFIG_PLATFORM_AT32AP=y
-+CONFIG_CPU_AT32AP700X=y
-+CONFIG_CPU_AT32AP7002=y
-+CONFIG_BOARD_ATSTK1000=y
-+# CONFIG_BOARD_ATNGW100 is not set
-+# CONFIG_BOARD_ATSTK1002 is not set
-+# CONFIG_BOARD_ATSTK1003 is not set
-+CONFIG_BOARD_ATSTK1004=y
-+# CONFIG_BOARD_ATSTK100X_CUSTOM is not set
-+# CONFIG_BOARD_ATSTK100X_SPI1 is not set
-+# CONFIG_BOARD_ATSTK1000_J2_LED is not set
-+CONFIG_BOARD_ATSTK1000_EXTDAC=y
-+# CONFIG_BOARD_ATSTK100X_ENABLE_AC97 is not set
-+# CONFIG_BOARD_ATSTK1000_CF_HACKS is not set
-+# CONFIG_BOARD_ATSTK100X_ENABLE_PSIF is not set
-+CONFIG_LOADER_U_BOOT=y
-+
-+#
-+# Atmel AVR32 AP options
-+#
-+# CONFIG_AP700X_32_BIT_SMC is not set
-+CONFIG_AP700X_16_BIT_SMC=y
-+# CONFIG_AP700X_8_BIT_SMC is not set
-+# CONFIG_GPIO_DEV is not set
-+CONFIG_LOAD_ADDRESS=0x10000000
-+CONFIG_ENTRY_ADDRESS=0x90000000
-+CONFIG_PHYS_OFFSET=0x10000000
-+CONFIG_PREEMPT_NONE=y
-+# CONFIG_PREEMPT_VOLUNTARY is not set
-+# CONFIG_PREEMPT is not set
-+# CONFIG_HAVE_ARCH_BOOTMEM_NODE is not set
-+# CONFIG_ARCH_HAVE_MEMORY_PRESENT is not set
-+# CONFIG_NEED_NODE_MEMMAP_SIZE is not set
-+CONFIG_ARCH_FLATMEM_ENABLE=y
-+# CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
-+# CONFIG_ARCH_SPARSEMEM_ENABLE is not set
-+CONFIG_SELECT_MEMORY_MODEL=y
-+CONFIG_FLATMEM_MANUAL=y
-+# CONFIG_DISCONTIGMEM_MANUAL is not set
-+# CONFIG_SPARSEMEM_MANUAL is not set
-+CONFIG_FLATMEM=y
-+CONFIG_FLAT_NODE_MEM_MAP=y
-+# CONFIG_SPARSEMEM_STATIC is not set
-+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
-+CONFIG_SPLIT_PTLOCK_CPUS=4
-+# CONFIG_RESOURCES_64BIT is not set
-+CONFIG_ZONE_DMA_FLAG=0
-+CONFIG_VIRT_TO_BUS=y
-+# CONFIG_OWNERSHIP_TRACE is not set
-+# CONFIG_NMI_DEBUGGING is not set
-+# CONFIG_DW_DMAC is not set
-+# CONFIG_HZ_100 is not set
-+CONFIG_HZ_250=y
-+# CONFIG_HZ_300 is not set
-+# CONFIG_HZ_1000 is not set
-+CONFIG_HZ=250
-+CONFIG_CMDLINE=""
-+
-+#
-+# Power management options
-+#
-+
-+#
-+# CPU Frequency scaling
-+#
-+CONFIG_CPU_FREQ=y
-+CONFIG_CPU_FREQ_TABLE=y
-+# CONFIG_CPU_FREQ_DEBUG is not set
-+# CONFIG_CPU_FREQ_STAT is not set
-+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
-+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-+# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
-+CONFIG_CPU_FREQ_GOV_USERSPACE=y
-+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
-+CONFIG_CPU_FREQ_AT32AP=y
-+
-+#
-+# Bus options
-+#
-+# CONFIG_ARCH_SUPPORTS_MSI is not set
-+# CONFIG_PCCARD is not set
-+
-+#
-+# Executable file formats
-+#
-+CONFIG_BINFMT_ELF=y
-+# CONFIG_BINFMT_MISC is not set
-+
-+#
-+# Networking
-+#
-+CONFIG_NET=y
-+
-+#
-+# Networking options
-+#
-+CONFIG_PACKET=y
-+CONFIG_PACKET_MMAP=y
-+CONFIG_UNIX=y
-+# CONFIG_NET_KEY is not set
-+CONFIG_INET=y
-+# CONFIG_IP_MULTICAST is not set
-+# CONFIG_IP_ADVANCED_ROUTER is not set
-+CONFIG_IP_FIB_HASH=y
-+# CONFIG_IP_PNP is not set
-+# CONFIG_NET_IPIP is not set
-+# CONFIG_NET_IPGRE is not set
-+# CONFIG_ARPD is not set
-+# CONFIG_SYN_COOKIES is not set
-+# CONFIG_INET_AH is not set
-+# CONFIG_INET_ESP is not set
-+# CONFIG_INET_IPCOMP is not set
-+# CONFIG_INET_XFRM_TUNNEL is not set
-+# CONFIG_INET_TUNNEL is not set
-+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-+# CONFIG_INET_XFRM_MODE_BEET is not set
-+# CONFIG_INET_LRO is not set
-+# CONFIG_INET_DIAG is not set
-+# CONFIG_TCP_CONG_ADVANCED is not set
-+CONFIG_TCP_CONG_CUBIC=y
-+CONFIG_DEFAULT_TCP_CONG="cubic"
-+# CONFIG_TCP_MD5SIG is not set
-+# CONFIG_IPV6 is not set
-+# CONFIG_INET6_XFRM_TUNNEL is not set
-+# CONFIG_INET6_TUNNEL is not set
-+# CONFIG_NETWORK_SECMARK is not set
-+# CONFIG_NETFILTER is not set
-+# CONFIG_IP_DCCP is not set
-+# CONFIG_IP_SCTP is not set
-+# CONFIG_TIPC is not set
-+# CONFIG_ATM is not set
-+# CONFIG_BRIDGE is not set
-+# CONFIG_VLAN_8021Q is not set
-+# CONFIG_DECNET is not set
-+# CONFIG_LLC2 is not set
-+# CONFIG_IPX is not set
-+# CONFIG_ATALK is not set
-+# CONFIG_X25 is not set
-+# CONFIG_LAPB is not set
-+# CONFIG_ECONET is not set
-+# CONFIG_WAN_ROUTER is not set
-+# CONFIG_NET_SCHED is not set
-+
-+#
-+# Network testing
-+#
-+# CONFIG_NET_PKTGEN is not set
-+# CONFIG_HAMRADIO is not set
-+# CONFIG_IRDA is not set
-+# CONFIG_BT is not set
-+# CONFIG_AF_RXRPC is not set
-+
-+#
-+# Wireless
-+#
-+# CONFIG_CFG80211 is not set
-+# CONFIG_WIRELESS_EXT is not set
-+# CONFIG_MAC80211 is not set
-+# CONFIG_IEEE80211 is not set
-+# CONFIG_RFKILL is not set
-+# CONFIG_NET_9P is not set
-+
-+#
-+# Device Drivers
-+#
-+
-+#
-+# Generic Driver Options
-+#
-+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
-+CONFIG_STANDALONE=y
-+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
-+# CONFIG_FW_LOADER is not set
-+# CONFIG_SYS_HYPERVISOR is not set
-+# CONFIG_CONNECTOR is not set
-+CONFIG_MTD=y
-+# CONFIG_MTD_DEBUG is not set
-+# CONFIG_MTD_CONCAT is not set
-+CONFIG_MTD_PARTITIONS=y
-+# CONFIG_MTD_REDBOOT_PARTS is not set
-+CONFIG_MTD_CMDLINE_PARTS=y
-+
-+#
-+# User Modules And Translation Layers
-+#
-+CONFIG_MTD_CHAR=y
-+# CONFIG_MTD_OOPS is not set
-+
-+#
-+# RAM/ROM/Flash chip drivers
-+#
-+CONFIG_MTD_CFI=y
-+# CONFIG_MTD_JEDECPROBE is not set
-+CONFIG_MTD_GEN_PROBE=y
-+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
-+CONFIG_MTD_MAP_BANK_WIDTH_1=y
-+CONFIG_MTD_MAP_BANK_WIDTH_2=y
-+CONFIG_MTD_MAP_BANK_WIDTH_4=y
-+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
-+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
-+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
-+CONFIG_MTD_CFI_I1=y
-+CONFIG_MTD_CFI_I2=y
-+# CONFIG_MTD_CFI_I4 is not set
-+# CONFIG_MTD_CFI_I8 is not set
-+# CONFIG_MTD_CFI_INTELEXT is not set
-+CONFIG_MTD_CFI_AMDSTD=y
-+# CONFIG_MTD_CFI_STAA is not set
-+CONFIG_MTD_CFI_UTIL=y
-+# CONFIG_MTD_RAM is not set
-+# CONFIG_MTD_ROM is not set
-+# CONFIG_MTD_ABSENT is not set
-+
-+#
-+# Mapping drivers for chip access
-+#
-+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
-+CONFIG_MTD_PHYSMAP=y
-+CONFIG_MTD_PHYSMAP_START=0x8000000
-+CONFIG_MTD_PHYSMAP_LEN=0x0
-+CONFIG_MTD_PHYSMAP_BANKWIDTH=2
-+# CONFIG_MTD_PLATRAM is not set
-+
-+#
-+# Self-contained MTD device drivers
-+#
-+# CONFIG_MTD_DATAFLASH is not set
-+# CONFIG_MTD_M25P80 is not set
-+# CONFIG_MTD_SLRAM is not set
-+# CONFIG_MTD_PHRAM is not set
-+# CONFIG_MTD_MTDRAM is not set
-+
-+#
-+# Disk-On-Chip Device Drivers
-+#
-+# CONFIG_MTD_DOC2000 is not set
-+# CONFIG_MTD_DOC2001 is not set
-+# CONFIG_MTD_DOC2001PLUS is not set
-+# CONFIG_MTD_NAND is not set
-+# CONFIG_MTD_ONENAND is not set
-+
-+#
-+# UBI - Unsorted block images
-+#
-+# CONFIG_MTD_UBI is not set
-+# CONFIG_PARPORT is not set
-+CONFIG_MISC_DEVICES=y
-+# CONFIG_ATMEL_PWM is not set
-+CONFIG_ATMEL_TCLIB=y
-+CONFIG_ATMEL_TCB_CLKSRC=y
-+CONFIG_ATMEL_TCB_CLKSRC_BLOCK=0
-+# CONFIG_EEPROM_93CX6 is not set
-+# CONFIG_ATMEL_SSC is not set
-+
-+#
-+# SCSI device support
-+#
-+# CONFIG_SCSI_DMA is not set
-+# CONFIG_SCSI_NETLINK is not set
-+# CONFIG_NETDEVICES is not set
-+# CONFIG_ISDN is not set
-+# CONFIG_PHONE is not set
-+
-+#
-+# Input device support
-+#
-+# CONFIG_INPUT is not set
-+
-+#
-+# Hardware I/O ports
-+#
-+# CONFIG_SERIO is not set
-+# CONFIG_GAMEPORT is not set
-+
-+#
-+# Character devices
-+#
-+# CONFIG_VT is not set
-+# CONFIG_SERIAL_NONSTANDARD is not set
-+
-+#
-+# Serial drivers
-+#
-+# CONFIG_SERIAL_8250 is not set
-+
-+#
-+# Non-8250 serial port support
-+#
-+CONFIG_SERIAL_ATMEL=y
-+CONFIG_SERIAL_ATMEL_CONSOLE=y
-+# CONFIG_SERIAL_ATMEL_PDC is not set
-+# CONFIG_SERIAL_ATMEL_TTYAT is not set
-+CONFIG_SERIAL_CORE=y
-+CONFIG_SERIAL_CORE_CONSOLE=y
-+CONFIG_UNIX98_PTYS=y
-+# CONFIG_LEGACY_PTYS is not set
-+# CONFIG_IPMI_HANDLER is not set
-+# CONFIG_HW_RANDOM is not set
-+# CONFIG_RTC is not set
-+# CONFIG_GEN_RTC is not set
-+# CONFIG_R3964 is not set
-+# CONFIG_TCG_TPM is not set
-+# CONFIG_I2C is not set
-+
-+#
-+# SPI support
-+#
-+CONFIG_SPI=y
-+CONFIG_SPI_MASTER=y
-+
-+#
-+# SPI Master Controller Drivers
-+#
-+CONFIG_SPI_ATMEL=y
-+# CONFIG_SPI_BITBANG is not set
-+
-+#
-+# SPI Protocol Masters
-+#
-+# CONFIG_SPI_AT25 is not set
-+# CONFIG_SPI_SPIDEV is not set
-+# CONFIG_SPI_TLE62X0 is not set
-+# CONFIG_W1 is not set
-+# CONFIG_POWER_SUPPLY is not set
-+# CONFIG_HWMON is not set
-+CONFIG_WATCHDOG=y
-+# CONFIG_WATCHDOG_NOWAYOUT is not set
-+
-+#
-+# Watchdog Device Drivers
-+#
-+# CONFIG_SOFT_WATCHDOG is not set
-+CONFIG_AT32AP700X_WDT=y
-+
-+#
-+# Sonics Silicon Backplane
-+#
-+CONFIG_SSB_POSSIBLE=y
-+# CONFIG_SSB is not set
-+
-+#
-+# Multifunction device drivers
-+#
-+# CONFIG_MFD_SM501 is not set
-+
-+#
-+# Multimedia devices
-+#
-+# CONFIG_VIDEO_DEV is not set
-+# CONFIG_DVB_CORE is not set
-+# CONFIG_DAB is not set
-+
-+#
-+# Graphics support
-+#
-+# CONFIG_VGASTATE is not set
-+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
-+CONFIG_FB=y
-+# CONFIG_FIRMWARE_EDID is not set
-+# CONFIG_FB_DDC is not set
-+CONFIG_FB_CFB_FILLRECT=y
-+CONFIG_FB_CFB_COPYAREA=y
-+CONFIG_FB_CFB_IMAGEBLIT=y
-+# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
-+# CONFIG_FB_SYS_FILLRECT is not set
-+# CONFIG_FB_SYS_COPYAREA is not set
-+# CONFIG_FB_SYS_IMAGEBLIT is not set
-+# CONFIG_FB_SYS_FOPS is not set
-+CONFIG_FB_DEFERRED_IO=y
-+# CONFIG_FB_SVGALIB is not set
-+# CONFIG_FB_MACMODES is not set
-+# CONFIG_FB_BACKLIGHT is not set
-+# CONFIG_FB_MODE_HELPERS is not set
-+# CONFIG_FB_TILEBLITTING is not set
-+
-+#
-+# Frame buffer hardware drivers
-+#
-+# CONFIG_FB_S1D13XXX is not set
-+CONFIG_FB_ATMEL=y
-+# CONFIG_FB_VIRTUAL is not set
-+CONFIG_BACKLIGHT_LCD_SUPPORT=y
-+CONFIG_LCD_CLASS_DEVICE=y
-+CONFIG_LCD_LTV350QV=y
-+# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
-+
-+#
-+# Display device support
-+#
-+# CONFIG_DISPLAY_SUPPORT is not set
-+# CONFIG_LOGO is not set
-+
-+#
-+# Sound
-+#
-+# CONFIG_SOUND is not set
-+CONFIG_USB_SUPPORT=y
-+# CONFIG_USB_ARCH_HAS_HCD is not set
-+# CONFIG_USB_ARCH_HAS_OHCI is not set
-+# CONFIG_USB_ARCH_HAS_EHCI is not set
-+
-+#
-+# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
-+#
-+
-+#
-+# USB Gadget Support
-+#
-+CONFIG_USB_GADGET=y
-+# CONFIG_USB_GADGET_DEBUG_FILES is not set
-+CONFIG_USB_GADGET_SELECTED=y
-+# CONFIG_USB_GADGET_AMD5536UDC is not set
-+CONFIG_USB_GADGET_ATMEL_USBA=y
-+CONFIG_USB_ATMEL_USBA=y
-+# CONFIG_USB_GADGET_FSL_USB2 is not set
-+# CONFIG_USB_GADGET_NET2280 is not set
-+# CONFIG_USB_GADGET_PXA2XX is not set
-+# CONFIG_USB_GADGET_M66592 is not set
-+# CONFIG_USB_GADGET_GOKU is not set
-+# CONFIG_USB_GADGET_LH7A40X is not set
-+# CONFIG_USB_GADGET_OMAP is not set
-+# CONFIG_USB_GADGET_S3C2410 is not set
-+# CONFIG_USB_GADGET_AT91 is not set
-+# CONFIG_USB_GADGET_DUMMY_HCD is not set
-+CONFIG_USB_GADGET_DUALSPEED=y
-+# CONFIG_USB_ZERO is not set
-+CONFIG_USB_ETH=y
-+# CONFIG_USB_ETH_RNDIS is not set
-+# CONFIG_USB_GADGETFS is not set
-+# CONFIG_USB_FILE_STORAGE is not set
-+# CONFIG_USB_G_SERIAL is not set
-+# CONFIG_USB_MIDI_GADGET is not set
-+# CONFIG_MMC is not set
-+# CONFIG_NEW_LEDS is not set
-+CONFIG_RTC_LIB=y
-+CONFIG_RTC_CLASS=y
-+CONFIG_RTC_HCTOSYS=y
-+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
-+# CONFIG_RTC_DEBUG is not set
-+
-+#
-+# RTC interfaces
-+#
-+CONFIG_RTC_INTF_SYSFS=y
-+# CONFIG_RTC_INTF_PROC is not set
-+CONFIG_RTC_INTF_DEV=y
-+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
-+# CONFIG_RTC_DRV_TEST is not set
-+
-+#
-+# SPI RTC drivers
-+#
-+# CONFIG_RTC_DRV_RS5C348 is not set
-+# CONFIG_RTC_DRV_MAX6902 is not set
-+
-+#
-+# Platform RTC drivers
-+#
-+# CONFIG_RTC_DRV_DS1553 is not set
-+# CONFIG_RTC_DRV_STK17TA8 is not set
-+# CONFIG_RTC_DRV_DS1742 is not set
-+# CONFIG_RTC_DRV_M48T86 is not set
-+# CONFIG_RTC_DRV_M48T59 is not set
-+# CONFIG_RTC_DRV_V3020 is not set
-+
-+#
-+# on-CPU RTC drivers
-+#
-+CONFIG_RTC_DRV_AT32AP700X=y
-+
-+#
-+# Userspace I/O
-+#
-+# CONFIG_UIO is not set
-+
-+#
-+# File systems
-+#
-+# CONFIG_INOTIFY is not set
-+# CONFIG_QUOTA is not set
-+# CONFIG_DNOTIFY is not set
-+# CONFIG_AUTOFS_FS is not set
-+# CONFIG_AUTOFS4_FS is not set
-+# CONFIG_FUSE_FS is not set
-+
-+#
-+# Pseudo filesystems
-+#
-+CONFIG_PROC_FS=y
-+CONFIG_PROC_KCORE=y
-+CONFIG_PROC_SYSCTL=y
-+CONFIG_SYSFS=y
-+CONFIG_TMPFS=y
-+# CONFIG_TMPFS_POSIX_ACL is not set
-+# CONFIG_HUGETLB_PAGE is not set
-+# CONFIG_CONFIGFS_FS is not set
-+
-+#
-+# Miscellaneous filesystems
-+#
-+CONFIG_JFFS2_FS=y
-+CONFIG_JFFS2_FS_DEBUG=0
-+# CONFIG_JFFS2_FS_WRITEBUFFER is not set
-+# CONFIG_JFFS2_SUMMARY is not set
-+# CONFIG_JFFS2_FS_XATTR is not set
-+# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
-+CONFIG_JFFS2_ZLIB=y
-+# CONFIG_JFFS2_LZO is not set
-+CONFIG_JFFS2_RTIME=y
-+# CONFIG_JFFS2_RUBIN is not set
-+# CONFIG_NETWORK_FILESYSTEMS is not set
-+# CONFIG_NLS is not set
-+# CONFIG_DLM is not set
-+# CONFIG_INSTRUMENTATION is not set
-+
-+#
-+# Kernel hacking
-+#
-+# CONFIG_PRINTK_TIME is not set
-+CONFIG_ENABLE_WARN_DEPRECATED=y
-+CONFIG_ENABLE_MUST_CHECK=y
-+CONFIG_MAGIC_SYSRQ=y
-+# CONFIG_UNUSED_SYMBOLS is not set
-+# CONFIG_DEBUG_FS is not set
-+# CONFIG_HEADERS_CHECK is not set
-+# CONFIG_DEBUG_KERNEL is not set
-+# CONFIG_DEBUG_BUGVERBOSE is not set
-+# CONFIG_SAMPLES is not set
-+
-+#
-+# Security options
-+#
-+# CONFIG_KEYS is not set
-+# CONFIG_SECURITY is not set
-+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
-+# CONFIG_CRYPTO is not set
-+
-+#
-+# Library routines
-+#
-+CONFIG_BITREVERSE=y
-+# CONFIG_CRC_CCITT is not set
-+# CONFIG_CRC16 is not set
-+# CONFIG_CRC_ITU_T is not set
-+CONFIG_CRC32=y
-+# CONFIG_CRC7 is not set
-+# CONFIG_LIBCRC32C is not set
-+CONFIG_ZLIB_INFLATE=y
-+CONFIG_ZLIB_DEFLATE=y
-+CONFIG_HAS_IOMEM=y
-+CONFIG_HAS_IOPORT=y
-+CONFIG_HAS_DMA=y
---- /dev/null
-+++ b/arch/avr32/drivers/dw-dmac.c
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/drivers/dw-dmac.c avr32-2.6/arch/avr32/drivers/dw-dmac.c
+--- linux-2.6.25.6/arch/avr32/drivers/dw-dmac.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/drivers/dw-dmac.c	2008-06-12 15:09:38.719815350 +0200
 @@ -0,0 +1,761 @@
 +/*
 + * Driver for the Synopsys DesignWare DMA Controller
@@ -5398,8 +4735,9 @@
 +MODULE_DESCRIPTION("Synopsys DesignWare DMA Controller driver");
 +MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
 +MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/arch/avr32/drivers/dw-dmac.h
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/drivers/dw-dmac.h avr32-2.6/arch/avr32/drivers/dw-dmac.h
+--- linux-2.6.25.6/arch/avr32/drivers/dw-dmac.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/drivers/dw-dmac.h	2008-06-12 15:09:38.719815350 +0200
 @@ -0,0 +1,42 @@
 +/*
 + * Driver for the Synopsys DesignWare DMA Controller
@@ -5443,13 +4781,15 @@
 +#define DW_DMAC_CHAN_DSR	0x050
 +
 +#endif /* __AVR32_DW_DMAC_H__ */
---- /dev/null
-+++ b/arch/avr32/drivers/Makefile
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/drivers/Makefile avr32-2.6/arch/avr32/drivers/Makefile
+--- linux-2.6.25.6/arch/avr32/drivers/Makefile	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/drivers/Makefile	2008-06-12 15:09:38.719815350 +0200
 @@ -0,0 +1 @@
 +obj-$(CONFIG_DW_DMAC)			+= dw-dmac.o
---- a/arch/avr32/Kconfig
-+++ b/arch/avr32/Kconfig
-@@ -45,6 +45,9 @@
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/Kconfig avr32-2.6/arch/avr32/Kconfig
+--- linux-2.6.25.6/arch/avr32/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/Kconfig	2008-06-12 15:09:38.711815728 +0200
+@@ -47,6 +47,9 @@
  config GENERIC_TIME
  	def_bool y
  
@@ -5459,17 +4799,7 @@
  config RWSEM_XCHGADD_ALGORITHM
  	def_bool n
  
-@@ -54,6 +57,9 @@
- config ARCH_HAS_ILOG2_U64
- 	def_bool n
- 
-+config ARCH_SUPPORTS_OPROFILE
-+	def_bool y
-+
- config GENERIC_HWEIGHT
- 	def_bool y
- 
-@@ -68,6 +74,8 @@
+@@ -70,6 +73,8 @@
  
  menu "System Type and features"
  
@@ -5478,51 +4808,15 @@
  config SUBARCH_AVR32B
  	bool
  config MMU
-@@ -81,19 +89,23 @@
+@@ -83,6 +88,7 @@
  	select MMU
  	select PERFORMANCE_COUNTERS
+ 	select HAVE_GPIO_LIB
++	select GENERIC_ALLOCATOR
  
--choice
--	prompt "AVR32 CPU type"
--	default CPU_AT32AP7000
-+#
-+# CPU types
-+#
- 
--config CPU_AT32AP7000
--	bool "AT32AP7000"
-+# AP7000 derivatives
-+config CPU_AT32AP700X
-+	bool
- 	select PLATFORM_AT32AP
--endchoice
--
--#
--# CPU Daughterboards for ATSTK1000
--config BOARD_ATSTK1002
-+config CPU_AT32AP7000
-+	bool
-+	select CPU_AT32AP700X
-+config CPU_AT32AP7001
-+	bool
-+	select CPU_AT32AP700X
-+config CPU_AT32AP7002
- 	bool
-+	select CPU_AT32AP700X
- 
- choice
- 	prompt "AVR32 board type"
-@@ -101,15 +113,18 @@
- 
- config BOARD_ATSTK1000
- 	bool "ATSTK1000 evaluation board"
--	select BOARD_ATSTK1002 if CPU_AT32AP7000
- 
- config BOARD_ATNGW100
- 	bool "ATNGW100 Network Gateway"
-+	select CPU_AT32AP7000
- endchoice
- 
+ #
+ # CPU types
+@@ -117,6 +123,9 @@
  if BOARD_ATSTK1000
  source "arch/avr32/boards/atstk1000/Kconfig"
  endif
@@ -5532,39 +4826,10 @@
  
  choice
  	prompt "Boot loader type"
-@@ -123,15 +138,15 @@
- 
- config LOAD_ADDRESS
- 	hex
--	default 0x10000000 if LOADER_U_BOOT=y && CPU_AT32AP7000=y
-+	default 0x10000000 if LOADER_U_BOOT=y && CPU_AT32AP700X=y
- 
- config ENTRY_ADDRESS
- 	hex
--	default 0x90000000 if LOADER_U_BOOT=y && CPU_AT32AP7000=y
-+	default 0x90000000 if LOADER_U_BOOT=y && CPU_AT32AP700X=y
+@@ -180,6 +189,10 @@
+ 	  be dumped to the console when a Non-Maskable Interrupt
+ 	  happens.
  
- config PHYS_OFFSET
- 	hex
--	default 0x10000000 if CPU_AT32AP7000=y
-+	default 0x10000000 if CPU_AT32AP700X=y
- 
- source "kernel/Kconfig.preempt"
- 
-@@ -163,6 +178,20 @@
- 	  enabling Nexus-compliant debuggers to keep track of the PID of the
- 	  currently executing task.
- 
-+config NMI_DEBUGGING
-+	bool "NMI Debugging"
-+	default n
-+	help
-+	  Say Y here and pass the nmi_debug command-line parameter to
-+	  the kernel to turn on NMI debugging. Depending on the value
-+	  of the nmi_debug option, various pieces of information will
-+	  be dumped to the console when a Non-Maskable Interrupt
-+	  happens.
-+
 +config DW_DMAC
 +	tristate "Synopsys DesignWare DMA Controller support"
 +	default y if CPU_AT32AP7000
@@ -5572,228 +4837,43 @@
  # FPU emulation goes here
  
  source "kernel/Kconfig.hz"
-@@ -219,6 +248,8 @@
+@@ -196,6 +209,11 @@
  
- source "fs/Kconfig"
- 
-+source "kernel/Kconfig.instrumentation"
-+
- source "arch/avr32/Kconfig.debug"
+ menu "Power management options"
  
- source "security/Kconfig"
---- a/arch/avr32/Kconfig.debug
-+++ b/arch/avr32/Kconfig.debug
-@@ -6,14 +6,4 @@
- 
- source "lib/Kconfig.debug"
- 
--config KPROBES
--	bool "Kprobes"
--	depends on DEBUG_KERNEL
--	help
--	  Kprobes allows you to trap at almost any kernel address and
--          execute a callback function.  register_kprobe() establishes
--          a probepoint and specifies the callback.  Kprobes is useful
--          for kernel debugging, non-intrusive instrumentation and testing.
--          If in doubt, say "N".
--
- endmenu
---- a/arch/avr32/kernel/cpu.c
-+++ b/arch/avr32/kernel/cpu.c
-@@ -13,6 +13,7 @@
- #include <linux/percpu.h>
- #include <linux/param.h>
- #include <linux/errno.h>
-+#include <linux/clk.h>
- 
- #include <asm/setup.h>
- #include <asm/sysreg.h>
-@@ -187,9 +188,20 @@
- 
- subsys_initcall(topology_init);
- 
-+struct chip_id_map {
-+	u16	mid;
-+	u16	pn;
-+	const char *name;
-+};
-+
-+static const struct chip_id_map chip_names[] = {
-+	{ .mid = 0x1f, .pn = 0x1e82, .name = "AT32AP700x" },
-+};
-+#define NR_CHIP_NAMES ARRAY_SIZE(chip_names)
-+
- static const char *cpu_names[] = {
- 	"Morgan",
--	"AP7000",
-+	"AP7",
- };
- #define NR_CPU_NAMES ARRAY_SIZE(cpu_names)
- 
-@@ -206,12 +218,32 @@
- 	"MPU"
- };
- 
-+static const char *cpu_feature_flags[] = {
-+	"rmw", "dsp", "simd", "ocd", "perfctr", "java", "fpu",
-+};
-+
-+static const char *get_chip_name(struct avr32_cpuinfo *cpu)
-+{
-+	unsigned int i;
-+	unsigned int mid = avr32_get_manufacturer_id(cpu);
-+	unsigned int pn = avr32_get_product_number(cpu);
-+
-+	for (i = 0; i < NR_CHIP_NAMES; i++) {
-+		if (chip_names[i].mid == mid && chip_names[i].pn == pn)
-+			return chip_names[i].name;
-+	}
++config ARCH_SUSPEND_POSSIBLE
++	def_bool y
 +
-+	return "(unknown)";
-+}
++source "kernel/power/Kconfig"
 +
- void __init setup_processor(void)
- {
- 	unsigned long config0, config1;
- 	unsigned long features;
- 	unsigned cpu_id, cpu_rev, arch_id, arch_rev, mmu_type;
-+	unsigned device_id;
- 	unsigned tmp;
-+	unsigned i;
- 
- 	config0 = sysreg_read(CONFIG0);
- 	config1 = sysreg_read(CONFIG1);
-@@ -221,11 +253,14 @@
- 	arch_rev = SYSREG_BFEXT(AR, config0);
- 	mmu_type = SYSREG_BFEXT(MMUT, config0);
- 
-+	device_id = ocd_read(DID);
-+
- 	boot_cpu_data.arch_type = arch_id;
- 	boot_cpu_data.cpu_type = cpu_id;
- 	boot_cpu_data.arch_revision = arch_rev;
- 	boot_cpu_data.cpu_revision = cpu_rev;
- 	boot_cpu_data.tlb_config = mmu_type;
-+	boot_cpu_data.device_id = device_id;
- 
- 	tmp = SYSREG_BFEXT(ILSZ, config1);
- 	if (tmp) {
-@@ -247,41 +282,34 @@
- 		return;
- 	}
+ menu "CPU Frequency scaling"
  
--	printk ("CPU: %s [%02x] revision %d (%s revision %d)\n",
-+	printk ("CPU: %s chip revision %c\n", get_chip_name(&boot_cpu_data),
-+			avr32_get_chip_revision(&boot_cpu_data) + 'A');
-+	printk ("CPU: %s [%02x] core revision %d (%s arch revision %d)\n",
- 		cpu_names[cpu_id], cpu_id, cpu_rev,
- 		arch_names[arch_id], arch_rev);
- 	printk ("CPU: MMU configuration: %s\n", mmu_types[mmu_type]);
- 
- 	printk ("CPU: features:");
- 	features = 0;
--	if (config0 & SYSREG_BIT(CONFIG0_R)) {
-+	if (config0 & SYSREG_BIT(CONFIG0_R))
- 		features |= AVR32_FEATURE_RMW;
--		printk(" rmw");
--	}
--	if (config0 & SYSREG_BIT(CONFIG0_D)) {
-+	if (config0 & SYSREG_BIT(CONFIG0_D))
- 		features |= AVR32_FEATURE_DSP;
--		printk(" dsp");
--	}
--	if (config0 & SYSREG_BIT(CONFIG0_S)) {
-+	if (config0 & SYSREG_BIT(CONFIG0_S))
- 		features |= AVR32_FEATURE_SIMD;
--		printk(" simd");
--	}
--	if (config0 & SYSREG_BIT(CONFIG0_O)) {
-+	if (config0 & SYSREG_BIT(CONFIG0_O))
- 		features |= AVR32_FEATURE_OCD;
--		printk(" ocd");
--	}
--	if (config0 & SYSREG_BIT(CONFIG0_P)) {
-+	if (config0 & SYSREG_BIT(CONFIG0_P))
- 		features |= AVR32_FEATURE_PCTR;
--		printk(" perfctr");
--	}
--	if (config0 & SYSREG_BIT(CONFIG0_J)) {
-+	if (config0 & SYSREG_BIT(CONFIG0_J))
- 		features |= AVR32_FEATURE_JAVA;
--		printk(" java");
--	}
--	if (config0 & SYSREG_BIT(CONFIG0_F)) {
-+	if (config0 & SYSREG_BIT(CONFIG0_F))
- 		features |= AVR32_FEATURE_FPU;
--		printk(" fpu");
--	}
-+
-+	for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++)
-+		if (features & (1 << i))
-+			printk(" %s", cpu_feature_flags[i]);
+ source "drivers/cpufreq/Kconfig"
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/avr32_ksyms.c avr32-2.6/arch/avr32/kernel/avr32_ksyms.c
+--- linux-2.6.25.6/arch/avr32/kernel/avr32_ksyms.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/avr32_ksyms.c	2008-06-12 15:03:55.883815569 +0200
+@@ -29,7 +29,9 @@
+  */
+ EXPORT_SYMBOL(memset);
+ EXPORT_SYMBOL(memcpy);
 +
- 	printk("\n");
- 	boot_cpu_data.features = features;
- }
-@@ -291,6 +319,8 @@
- {
- 	unsigned int icache_size, dcache_size;
- 	unsigned int cpu = smp_processor_id();
-+	unsigned int freq;
-+	unsigned int i;
- 
- 	icache_size = boot_cpu_data.icache.ways *
- 		boot_cpu_data.icache.sets *
-@@ -301,15 +331,21 @@
- 
- 	seq_printf(m, "processor\t: %d\n", cpu);
- 
-+	seq_printf(m, "chip type\t: %s revision %c\n",
-+			get_chip_name(&boot_cpu_data),
-+			avr32_get_chip_revision(&boot_cpu_data) + 'A');
- 	if (boot_cpu_data.arch_type < NR_ARCH_NAMES)
--		seq_printf(m, "cpu family\t: %s revision %d\n",
-+		seq_printf(m, "cpu arch\t: %s revision %d\n",
- 			   arch_names[boot_cpu_data.arch_type],
- 			   boot_cpu_data.arch_revision);
- 	if (boot_cpu_data.cpu_type < NR_CPU_NAMES)
--		seq_printf(m, "cpu type\t: %s revision %d\n",
-+		seq_printf(m, "cpu core\t: %s revision %d\n",
- 			   cpu_names[boot_cpu_data.cpu_type],
- 			   boot_cpu_data.cpu_revision);
- 
-+	freq = (clk_get_rate(boot_cpu_data.clk) + 500) / 1000;
-+	seq_printf(m, "cpu MHz\t\t: %u.%03u\n", freq / 1000, freq % 1000);
-+
- 	seq_printf(m, "i-cache\t\t: %dK (%u ways x %u sets x %u)\n",
- 		   icache_size >> 10,
- 		   boot_cpu_data.icache.ways,
-@@ -320,7 +356,13 @@
- 		   boot_cpu_data.dcache.ways,
- 		   boot_cpu_data.dcache.sets,
- 		   boot_cpu_data.dcache.linesz);
--	seq_printf(m, "bogomips\t: %lu.%02lu\n",
-+
-+	seq_printf(m, "features\t:");
-+	for (i = 0; i < ARRAY_SIZE(cpu_feature_flags); i++)
-+		if (boot_cpu_data.features & (1 << i))
-+			seq_printf(m, " %s", cpu_feature_flags[i]);
-+
-+	seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
- 		   boot_cpu_data.loops_per_jiffy / (500000/HZ),
- 		   (boot_cpu_data.loops_per_jiffy / (5000/HZ)) % 100);
- 
-@@ -343,7 +385,7 @@
- 
- }
+ EXPORT_SYMBOL(clear_page);
++EXPORT_SYMBOL(copy_page);
  
--struct seq_operations cpuinfo_op = {
-+const struct seq_operations cpuinfo_op = {
- 	.start	= c_start,
- 	.next	= c_next,
- 	.stop	= c_stop,
---- /dev/null
-+++ b/arch/avr32/kernel/dma-controller.c
+ /*
+  * Userspace access stuff.
+@@ -41,6 +43,8 @@
+ EXPORT_SYMBOL(__strncpy_from_user);
+ EXPORT_SYMBOL(clear_user);
+ EXPORT_SYMBOL(__clear_user);
++EXPORT_SYMBOL(strnlen_user);
++
+ EXPORT_SYMBOL(csum_partial);
+ EXPORT_SYMBOL(csum_partial_copy_generic);
+ 
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/dma-controller.c avr32-2.6/arch/avr32/kernel/dma-controller.c
+--- linux-2.6.25.6/arch/avr32/kernel/dma-controller.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/kernel/dma-controller.c	2008-06-12 15:09:38.719815350 +0200
 @@ -0,0 +1,34 @@
 +/*
 + * Preliminary DMA controller framework for AVR32
@@ -5829,8 +4909,9 @@
 +	return NULL;
 +}
 +EXPORT_SYMBOL(find_dma_controller);
---- a/arch/avr32/kernel/entry-avr32b.S
-+++ b/arch/avr32/kernel/entry-avr32b.S
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/entry-avr32b.S avr32-2.6/arch/avr32/kernel/entry-avr32b.S
+--- linux-2.6.25.6/arch/avr32/kernel/entry-avr32b.S	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/entry-avr32b.S	2008-06-12 15:03:55.883815569 +0200
 @@ -741,26 +741,6 @@
  
  	.section .irq.text,"ax",@progbits
@@ -5858,330 +4939,21 @@
  	.global	irq_level0
  	.global	irq_level1
  	.global	irq_level2
---- a/arch/avr32/kernel/irq.c
-+++ b/arch/avr32/kernel/irq.c
-@@ -25,6 +25,17 @@
- 	printk("unexpected IRQ %u\n", irq);
- }
- 
-+/* May be overridden by platform code */
-+int __weak nmi_enable(void)
-+{
-+	return -ENOSYS;
-+}
-+
-+void __weak nmi_disable(void)
-+{
-+
-+}
-+
- #ifdef CONFIG_PROC_FS
- int show_interrupts(struct seq_file *p, void *v)
- {
---- a/arch/avr32/kernel/kprobes.c
-+++ b/arch/avr32/kernel/kprobes.c
-@@ -48,6 +48,7 @@
- void __kprobes arch_arm_kprobe(struct kprobe *p)
- {
- 	pr_debug("arming kprobe at %p\n", p->addr);
-+	ocd_enable(NULL);
- 	*p->addr = BREAKPOINT_INSTRUCTION;
- 	flush_icache_range((unsigned long)p->addr,
- 			   (unsigned long)p->addr + sizeof(kprobe_opcode_t));
-@@ -56,6 +57,7 @@
- void __kprobes arch_disarm_kprobe(struct kprobe *p)
- {
- 	pr_debug("disarming kprobe at %p\n", p->addr);
-+	ocd_disable(NULL);
- 	*p->addr = p->opcode;
- 	flush_icache_range((unsigned long)p->addr,
- 			   (unsigned long)p->addr + sizeof(kprobe_opcode_t));
-@@ -260,9 +262,6 @@
- 
- int __init arch_init_kprobes(void)
- {
--	printk("KPROBES: Enabling monitor mode (MM|DBE)...\n");
--	ocd_write(DC, (1 << OCD_DC_MM_BIT) | (1 << OCD_DC_DBE_BIT));
--
- 	/* TODO: Register kretprobe trampoline */
- 	return 0;
- }
---- a/arch/avr32/kernel/Makefile
-+++ b/arch/avr32/kernel/Makefile
-@@ -6,9 +6,11 @@
- 
- obj-$(CONFIG_SUBARCH_AVR32B)	+= entry-avr32b.o
- obj-y				+= syscall_table.o syscall-stubs.o irq.o
--obj-y				+= setup.o traps.o semaphore.o ptrace.o
-+obj-y				+= setup.o traps.o semaphore.o ocd.o ptrace.o
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/Makefile avr32-2.6/arch/avr32/kernel/Makefile
+--- linux-2.6.25.6/arch/avr32/kernel/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/Makefile	2008-06-12 15:09:38.719815350 +0200
+@@ -9,6 +9,7 @@
+ obj-y				+= setup.o traps.o semaphore.o ocd.o ptrace.o
  obj-y				+= signal.o sys_avr32.o process.o time.o
  obj-y				+= init_task.o switch_to.o cpu.o
 +obj-y				+= dma-controller.o
  obj-$(CONFIG_MODULES)		+= module.o avr32_ksyms.o
  obj-$(CONFIG_KPROBES)		+= kprobes.o
  obj-$(CONFIG_STACKTRACE)	+= stacktrace.o
-+obj-$(CONFIG_NMI_DEBUGGING)	+= nmi_debug.o
---- /dev/null
-+++ b/arch/avr32/kernel/nmi_debug.c
-@@ -0,0 +1,82 @@
-+/*
-+ * Copyright (C) 2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/delay.h>
-+#include <linux/kdebug.h>
-+#include <linux/notifier.h>
-+#include <linux/sched.h>
-+
-+#include <asm/irq.h>
-+
-+enum nmi_action {
-+	NMI_SHOW_STATE	= 1 << 0,
-+	NMI_SHOW_REGS	= 1 << 1,
-+	NMI_DIE		= 1 << 2,
-+	NMI_DEBOUNCE	= 1 << 3,
-+};
-+
-+static unsigned long nmi_actions;
-+
-+static int nmi_debug_notify(struct notifier_block *self,
-+		unsigned long val, void *data)
-+{
-+	struct die_args *args = data;
-+
-+	if (likely(val != DIE_NMI))
-+		return NOTIFY_DONE;
-+
-+	if (nmi_actions & NMI_SHOW_STATE)
-+		show_state();
-+	if (nmi_actions & NMI_SHOW_REGS)
-+		show_regs(args->regs);
-+	if (nmi_actions & NMI_DEBOUNCE)
-+		mdelay(10);
-+	if (nmi_actions & NMI_DIE)
-+		return NOTIFY_BAD;
-+
-+	return NOTIFY_OK;
-+}
-+
-+static struct notifier_block nmi_debug_nb = {
-+	.notifier_call = nmi_debug_notify,
-+};
-+
-+static int __init nmi_debug_setup(char *str)
-+{
-+	char *p, *sep;
-+
-+	register_die_notifier(&nmi_debug_nb);
-+	if (nmi_enable()) {
-+		printk(KERN_WARNING "Unable to enable NMI.\n");
-+		return 0;
-+	}
-+
-+	if (*str != '=')
-+		return 0;
-+
-+	for (p = str + 1; *p; p = sep + 1) {
-+		sep = strchr(p, ',');
-+		if (sep)
-+			*sep = 0;
-+		if (strcmp(p, "state") == 0)
-+			nmi_actions |= NMI_SHOW_STATE;
-+		else if (strcmp(p, "regs") == 0)
-+			nmi_actions |= NMI_SHOW_REGS;
-+		else if (strcmp(p, "debounce") == 0)
-+			nmi_actions |= NMI_DEBOUNCE;
-+		else if (strcmp(p, "die") == 0)
-+			nmi_actions |= NMI_DIE;
-+		else
-+			printk(KERN_WARNING "NMI: Unrecognized action `%s'\n",
-+				p);
-+		if (!sep)
-+			break;
-+	}
-+
-+	return 0;
-+}
-+__setup("nmi_debug", nmi_debug_setup);
---- /dev/null
-+++ b/arch/avr32/kernel/ocd.c
-@@ -0,0 +1,163 @@
-+/*
-+ * Copyright (C) 2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/init.h>
-+#include <linux/sched.h>
-+#include <linux/spinlock.h>
-+
-+#include <asm/ocd.h>
-+
-+static long ocd_count;
-+static spinlock_t ocd_lock;
-+
-+/**
-+ * ocd_enable - enable on-chip debugging
-+ * @child: task to be debugged
-+ *
-+ * If @child is non-NULL, ocd_enable() first checks if debugging has
-+ * already been enabled for @child, and if it has, does nothing.
-+ *
-+ * If @child is NULL (e.g. when debugging the kernel), or debugging
-+ * has not already been enabled for it, ocd_enable() increments the
-+ * reference count and enables the debugging hardware.
-+ */
-+void ocd_enable(struct task_struct *child)
-+{
-+	u32 dc;
-+
-+	if (child)
-+		pr_debug("ocd_enable: child=%s [%u]\n",
-+				child->comm, child->pid);
-+	else
-+		pr_debug("ocd_enable (no child)\n");
-+
-+	if (!child || !test_and_set_tsk_thread_flag(child, TIF_DEBUG)) {
-+		spin_lock(&ocd_lock);
-+		ocd_count++;
-+		dc = ocd_read(DC);
-+		dc |= (1 << OCD_DC_MM_BIT) | (1 << OCD_DC_DBE_BIT);
-+		ocd_write(DC, dc);
-+		spin_unlock(&ocd_lock);
-+	}
-+}
-+
-+/**
-+ * ocd_disable - disable on-chip debugging
-+ * @child: task that was being debugged, but isn't anymore
-+ *
-+ * If @child is non-NULL, ocd_disable() checks if debugging is enabled
-+ * for @child, and if it isn't, does nothing.
-+ *
-+ * If @child is NULL (e.g. when debugging the kernel), or debugging is
-+ * enabled, ocd_disable() decrements the reference count, and if it
-+ * reaches zero, disables the debugging hardware.
-+ */
-+void ocd_disable(struct task_struct *child)
-+{
-+	u32 dc;
-+
-+	if (!child)
-+		pr_debug("ocd_disable (no child)\n");
-+	else if (test_tsk_thread_flag(child, TIF_DEBUG))
-+		pr_debug("ocd_disable: child=%s [%u]\n",
-+				child->comm, child->pid);
-+
-+	if (!child || test_and_clear_tsk_thread_flag(child, TIF_DEBUG)) {
-+		spin_lock(&ocd_lock);
-+		ocd_count--;
-+
-+		WARN_ON(ocd_count < 0);
-+
-+		if (ocd_count <= 0) {
-+			dc = ocd_read(DC);
-+			dc &= ~((1 << OCD_DC_MM_BIT) | (1 << OCD_DC_DBE_BIT));
-+			ocd_write(DC, dc);
-+		}
-+		spin_unlock(&ocd_lock);
-+	}
-+}
-+
-+#ifdef CONFIG_DEBUG_FS
-+#include <linux/debugfs.h>
-+#include <linux/module.h>
-+
-+static struct dentry *ocd_debugfs_root;
-+static struct dentry *ocd_debugfs_DC;
-+static struct dentry *ocd_debugfs_DS;
-+static struct dentry *ocd_debugfs_count;
-+
-+static u64 ocd_DC_get(void *data)
-+{
-+	return ocd_read(DC);
-+}
-+static void ocd_DC_set(void *data, u64 val)
-+{
-+	ocd_write(DC, val);
-+}
-+DEFINE_SIMPLE_ATTRIBUTE(fops_DC, ocd_DC_get, ocd_DC_set, "0x%08llx\n");
-+
-+static u64 ocd_DS_get(void *data)
-+{
-+	return ocd_read(DS);
-+}
-+DEFINE_SIMPLE_ATTRIBUTE(fops_DS, ocd_DS_get, NULL, "0x%08llx\n");
-+
-+static u64 ocd_count_get(void *data)
-+{
-+	return ocd_count;
-+}
-+DEFINE_SIMPLE_ATTRIBUTE(fops_count, ocd_count_get, NULL, "%lld\n");
-+
-+static void ocd_debugfs_init(void)
-+{
-+	struct dentry *root;
-+
-+	root = debugfs_create_dir("ocd", NULL);
-+	if (IS_ERR(root) || !root)
-+		goto err_root;
-+	ocd_debugfs_root = root;
-+
-+	ocd_debugfs_DC = debugfs_create_file("DC", S_IRUSR | S_IWUSR,
-+				root, NULL, &fops_DC);
-+	if (!ocd_debugfs_DC)
-+		goto err_DC;
-+
-+	ocd_debugfs_DS = debugfs_create_file("DS", S_IRUSR, root,
-+				NULL, &fops_DS);
-+	if (!ocd_debugfs_DS)
-+		goto err_DS;
-+
-+	ocd_debugfs_count = debugfs_create_file("count", S_IRUSR, root,
-+				NULL, &fops_count);
-+	if (!ocd_debugfs_count)
-+		goto err_count;
-+
-+	return;
-+
-+err_count:
-+	debugfs_remove(ocd_debugfs_DS);
-+err_DS:
-+	debugfs_remove(ocd_debugfs_DC);
-+err_DC:
-+	debugfs_remove(ocd_debugfs_root);
-+err_root:
-+	printk(KERN_WARNING "OCD: Failed to create debugfs entries\n");
-+}
-+#else
-+static inline void ocd_debugfs_init(void)
-+{
-+
-+}
-+#endif
-+
-+static int __init ocd_init(void)
-+{
-+	spin_lock_init(&ocd_lock);
-+	ocd_debugfs_init();
-+	return 0;
-+}
-+arch_initcall(ocd_init);
---- a/arch/avr32/kernel/process.c
-+++ b/arch/avr32/kernel/process.c
-@@ -11,17 +11,18 @@
- #include <linux/fs.h>
- #include <linux/ptrace.h>
- #include <linux/reboot.h>
-+#include <linux/tick.h>
- #include <linux/uaccess.h>
- #include <linux/unistd.h>
- 
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/process.c avr32-2.6/arch/avr32/kernel/process.c
+--- linux-2.6.25.6/arch/avr32/kernel/process.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/process.c	2008-06-12 15:03:55.887814682 +0200
+@@ -18,11 +18,11 @@
  #include <asm/sysreg.h>
  #include <asm/ocd.h>
  
@@ -6195,61 +4967,19 @@
  /*
   * This file handles the architecture-dependent parts of process handling..
   */
-@@ -30,8 +31,10 @@
- {
- 	/* endless idle loop with no priority at all */
- 	while (1) {
-+		tick_nohz_stop_sched_tick();
- 		while (!need_resched())
- 			cpu_idle_sleep();
-+		tick_nohz_restart_sched_tick();
- 		preempt_enable_no_resched();
- 		schedule();
- 		preempt_disable();
-@@ -103,7 +106,7 @@
-  */
- void exit_thread(void)
- {
--	/* nothing to do */
-+	ocd_disable(current);
- }
- 
- void flush_thread(void)
-@@ -345,6 +348,10 @@
- 	p->thread.cpu_context.ksp = (unsigned long)childregs;
- 	p->thread.cpu_context.pc = (unsigned long)ret_from_fork;
- 
-+	clear_tsk_thread_flag(p, TIF_DEBUG);
-+	if ((clone_flags & CLONE_PTRACE) && test_thread_flag(TIF_DEBUG))
-+		ocd_enable(p);
-+
- 	return 0;
- }
+@@ -54,6 +54,8 @@
  
---- a/arch/avr32/kernel/ptrace.c
-+++ b/arch/avr32/kernel/ptrace.c
-@@ -58,6 +58,7 @@
+ void machine_power_off(void)
  {
- 	clear_tsk_thread_flag(child, TIF_SINGLE_STEP);
- 	clear_tsk_thread_flag(child, TIF_BREAKPOINT);
-+	ocd_disable(child);
++	if (pm_power_off)
++		pm_power_off();
  }
  
- /*
-@@ -144,10 +145,6 @@
- {
- 	int ret;
- 
--	pr_debug("ptrace: Enabling monitor mode...\n");
--	ocd_write(DC, ocd_read(DC) | (1 << OCD_DC_MM_BIT)
--			| (1 << OCD_DC_DBE_BIT));
--
- 	switch (request) {
- 	/* Read the word at location addr in the child process */
- 	case PTRACE_PEEKTEXT:
---- a/arch/avr32/kernel/setup.c
-+++ b/arch/avr32/kernel/setup.c
-@@ -273,6 +273,8 @@
+ void machine_restart(char *cmd)
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/setup.c avr32-2.6/arch/avr32/kernel/setup.c
+--- linux-2.6.25.6/arch/avr32/kernel/setup.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/setup.c	2008-06-12 15:03:55.887814682 +0200
+@@ -274,6 +274,8 @@
  			printk(KERN_WARNING
  			       "Failed to allocate framebuffer memory\n");
  			fbmem_size = 0;
@@ -6258,30 +4988,22 @@
  		}
  	}
  
---- a/arch/avr32/kernel/signal.c
-+++ b/arch/avr32/kernel/signal.c
-@@ -270,19 +270,12 @@
- 	if (!user_mode(regs))
- 		return 0;
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/signal.c avr32-2.6/arch/avr32/kernel/signal.c
+--- linux-2.6.25.6/arch/avr32/kernel/signal.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/signal.c	2008-06-12 15:09:38.719815350 +0200
+@@ -93,6 +93,9 @@
+ 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
+ 		goto badframe;
  
--	if (try_to_freeze()) {
--		signr = 0;
--		if (!signal_pending(current))
--			goto no_signal;
--	}
--
- 	if (test_thread_flag(TIF_RESTORE_SIGMASK))
- 		oldset = &current->saved_sigmask;
- 	else if (!oldset)
- 		oldset = &current->blocked;
- 
- 	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
--no_signal:
- 	if (syscall) {
- 		switch (regs->r12) {
- 		case -ERESTART_RESTARTBLOCK:
---- a/arch/avr32/kernel/time.c
-+++ b/arch/avr32/kernel/time.c
++	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
++		goto badframe;
++
+ 	pr_debug("Context restored: pc = %08lx, lr = %08lx, sp = %08lx\n",
+ 		 regs->pc, regs->lr, regs->sp);
+ 
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/kernel/time.c avr32-2.6/arch/avr32/kernel/time.c
+--- linux-2.6.25.6/arch/avr32/kernel/time.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/kernel/time.c	2008-06-12 15:03:55.887814682 +0200
 @@ -1,16 +1,12 @@
  /*
   * Copyright (C) 2004-2007 Atmel Corporation
@@ -6564,7 +5286,7 @@
 +	comparator.min_delta_ns = clockevent_delta2ns(50, &comparator) + 1;
  
 -static struct sysdev_class timer_class = {
--	set_kset_name("timer"),
+-	.name = "timer",
 -};
 +	sysreg_write(COMPARE, 0);
 +	timer_irqaction.dev_id = &comparator;
@@ -6592,2400 +5314,286 @@
  }
 -
 -device_initcall(init_timer_sysfs);
---- a/arch/avr32/kernel/traps.c
-+++ b/arch/avr32/kernel/traps.c
-@@ -9,6 +9,7 @@
- #include <linux/bug.h>
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/lib/io-readsb.S avr32-2.6/arch/avr32/lib/io-readsb.S
+--- linux-2.6.25.6/arch/avr32/lib/io-readsb.S	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/lib/io-readsb.S	2008-06-12 15:09:38.719815350 +0200
+@@ -41,7 +41,7 @@
+ 2:	sub	r10, -4
+ 	reteq	r12
+ 
+-3:	ld.uh	r8, r12[0]
++3:	ld.ub	r8, r12[0]
+ 	sub	r10, 1
+ 	st.b	r11++, r8
+ 	brne	3b
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/at32ap700x.c avr32-2.6/arch/avr32/mach-at32ap/at32ap700x.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/at32ap700x.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/at32ap700x.c	2008-06-12 15:09:38.723815860 +0200
+@@ -6,11 +6,13 @@
+  * published by the Free Software Foundation.
+  */
+ #include <linux/clk.h>
++#include <linux/delay.h>
+ #include <linux/fb.h>
  #include <linux/init.h>
- #include <linux/kallsyms.h>
-+#include <linux/kdebug.h>
- #include <linux/module.h>
- #include <linux/notifier.h>
- #include <linux/sched.h>
-@@ -107,9 +108,23 @@
+ #include <linux/platform_device.h>
+ #include <linux/dma-mapping.h>
+ #include <linux/spi/spi.h>
++#include <linux/usb/atmel_usba_udc.h>
  
- asmlinkage void do_nmi(unsigned long ecr, struct pt_regs *regs)
- {
--	printk(KERN_ALERT "Got Non-Maskable Interrupt, dumping regs\n");
--	show_regs_log_lvl(regs, KERN_ALERT);
--	show_stack_log_lvl(current, regs->sp, regs, KERN_ALERT);
-+	int ret;
-+
-+	nmi_enter();
-+
-+	ret = notify_die(DIE_NMI, "NMI", regs, 0, ecr, SIGINT);
-+	switch (ret) {
-+	case NOTIFY_OK:
-+	case NOTIFY_STOP:
-+		return;
-+	case NOTIFY_BAD:
-+		die("Fatal Non-Maskable Interrupt", regs, SIGINT);
-+	default:
-+		break;
-+	}
-+
-+	printk(KERN_ALERT "Got NMI, but nobody cared. Disabling...\n");
-+	nmi_disable();
- }
+ #include <asm/io.h>
+ #include <asm/irq.h>
+@@ -18,6 +20,7 @@
+ #include <asm/arch/at32ap700x.h>
+ #include <asm/arch/board.h>
+ #include <asm/arch/portmux.h>
++#include <asm/arch/sram.h>
+ 
+ #include <video/atmel_lcdc.h>
+ 
+@@ -91,25 +94,18 @@
+ 
+ static DEFINE_SPINLOCK(pm_lock);
  
- asmlinkage void do_critical_exception(unsigned long ecr, struct pt_regs *regs)
---- a/arch/avr32/mach-at32ap/at32ap7000.c
-+++ /dev/null
-@@ -1,1730 +0,0 @@
--/*
-- * Copyright (C) 2005-2006 Atmel Corporation
-- *
-- * This program is free software; you can redistribute it and/or modify
-- * it under the terms of the GNU General Public License version 2 as
-- * published by the Free Software Foundation.
-- */
--#include <linux/clk.h>
--#include <linux/fb.h>
--#include <linux/init.h>
--#include <linux/platform_device.h>
--#include <linux/dma-mapping.h>
--#include <linux/spi/spi.h>
--
--#include <asm/io.h>
--
--#include <asm/arch/at32ap7000.h>
--#include <asm/arch/board.h>
--#include <asm/arch/portmux.h>
--
--#include <video/atmel_lcdc.h>
--
--#include "clock.h"
--#include "hmatrix.h"
--#include "pio.h"
--#include "pm.h"
--
--
--#define PBMEM(base)					\
--	{						\
--		.start		= base,			\
--		.end		= base + 0x3ff,		\
--		.flags		= IORESOURCE_MEM,	\
--	}
--#define IRQ(num)					\
--	{						\
--		.start		= num,			\
--		.end		= num,			\
--		.flags		= IORESOURCE_IRQ,	\
--	}
--#define NAMED_IRQ(num, _name)				\
--	{						\
--		.start		= num,			\
--		.end		= num,			\
--		.name		= _name,		\
--		.flags		= IORESOURCE_IRQ,	\
--	}
--
--/* REVISIT these assume *every* device supports DMA, but several
-- * don't ... tc, smc, pio, rtc, watchdog, pwm, ps2, and more.
-- */
--#define DEFINE_DEV(_name, _id)					\
--static u64 _name##_id##_dma_mask = DMA_32BIT_MASK;		\
--static struct platform_device _name##_id##_device = {		\
--	.name		= #_name,				\
--	.id		= _id,					\
--	.dev		= {					\
--		.dma_mask = &_name##_id##_dma_mask,		\
--		.coherent_dma_mask = DMA_32BIT_MASK,		\
--	},							\
--	.resource	= _name##_id##_resource,		\
--	.num_resources	= ARRAY_SIZE(_name##_id##_resource),	\
--}
--#define DEFINE_DEV_DATA(_name, _id)				\
--static u64 _name##_id##_dma_mask = DMA_32BIT_MASK;		\
--static struct platform_device _name##_id##_device = {		\
--	.name		= #_name,				\
--	.id		= _id,					\
--	.dev		= {					\
--		.dma_mask = &_name##_id##_dma_mask,		\
--		.platform_data	= &_name##_id##_data,		\
--		.coherent_dma_mask = DMA_32BIT_MASK,		\
--	},							\
--	.resource	= _name##_id##_resource,		\
--	.num_resources	= ARRAY_SIZE(_name##_id##_resource),	\
--}
--
--#define select_peripheral(pin, periph, flags)			\
--	at32_select_periph(GPIO_PIN_##pin, GPIO_##periph, flags)
--
--#define DEV_CLK(_name, devname, bus, _index)			\
--static struct clk devname##_##_name = {				\
--	.name		= #_name,				\
--	.dev		= &devname##_device.dev,		\
--	.parent		= &bus##_clk,				\
--	.mode		= bus##_clk_mode,			\
--	.get_rate	= bus##_clk_get_rate,			\
--	.index		= _index,				\
--}
--
--static DEFINE_SPINLOCK(pm_lock);
--
 -unsigned long at32ap7000_osc_rates[3] = {
 -	[0] = 32768,
 -	/* FIXME: these are ATSTK1002-specific */
 -	[1] = 20000000,
 -	[2] = 12000000,
 -};
--
--static unsigned long osc_get_rate(struct clk *clk)
--{
++static struct clk osc0;
++static struct clk osc1;
+ 
+ static unsigned long osc_get_rate(struct clk *clk)
+ {
 -	return at32ap7000_osc_rates[clk->index];
--}
--
--static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
--{
--	unsigned long div, mul, rate;
--
++	return at32_board_osc_rates[clk->index];
+ }
+ 
+ static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
+ {
+ 	unsigned long div, mul, rate;
+ 
 -	if (!(control & PM_BIT(PLLEN)))
 -		return 0;
 -
--	div = PM_BFEXT(PLLDIV, control) + 1;
--	mul = PM_BFEXT(PLLMUL, control) + 1;
--
--	rate = clk->parent->get_rate(clk->parent);
--	rate = (rate + div / 2) / div;
--	rate *= mul;
--
--	return rate;
--}
--
--static unsigned long pll0_get_rate(struct clk *clk)
--{
--	u32 control;
--
--	control = pm_readl(PLL0);
--
--	return pll_get_rate(clk, control);
--}
--
--static unsigned long pll1_get_rate(struct clk *clk)
--{
--	u32 control;
--
--	control = pm_readl(PLL1);
--
--	return pll_get_rate(clk, control);
--}
--
--/*
-- * The AT32AP7000 has five primary clock sources: One 32kHz
-- * oscillator, two crystal oscillators and two PLLs.
-- */
--static struct clk osc32k = {
--	.name		= "osc32k",
--	.get_rate	= osc_get_rate,
--	.users		= 1,
--	.index		= 0,
--};
--static struct clk osc0 = {
--	.name		= "osc0",
--	.get_rate	= osc_get_rate,
--	.users		= 1,
--	.index		= 1,
--};
--static struct clk osc1 = {
--	.name		= "osc1",
--	.get_rate	= osc_get_rate,
--	.index		= 2,
--};
--static struct clk pll0 = {
--	.name		= "pll0",
--	.get_rate	= pll0_get_rate,
--	.parent		= &osc0,
--};
--static struct clk pll1 = {
--	.name		= "pll1",
--	.get_rate	= pll1_get_rate,
--	.parent		= &osc0,
--};
--
--/*
-- * The main clock can be either osc0 or pll0.  The boot loader may
-- * have chosen one for us, so we don't really know which one until we
-- * have a look at the SM.
-- */
--static struct clk *main_clock;
--
--/*
-- * Synchronous clocks are generated from the main clock. The clocks
-- * must satisfy the constraint
-- *   fCPU >= fHSB >= fPB
-- * i.e. each clock must not be faster than its parent.
-- */
--static unsigned long bus_clk_get_rate(struct clk *clk, unsigned int shift)
--{
--	return main_clock->get_rate(main_clock) >> shift;
--};
--
--static void cpu_clk_mode(struct clk *clk, int enabled)
--{
--	unsigned long flags;
--	u32 mask;
--
--	spin_lock_irqsave(&pm_lock, flags);
--	mask = pm_readl(CPU_MASK);
--	if (enabled)
--		mask |= 1 << clk->index;
--	else
--		mask &= ~(1 << clk->index);
--	pm_writel(CPU_MASK, mask);
--	spin_unlock_irqrestore(&pm_lock, flags);
--}
--
--static unsigned long cpu_clk_get_rate(struct clk *clk)
--{
--	unsigned long cksel, shift = 0;
--
--	cksel = pm_readl(CKSEL);
--	if (cksel & PM_BIT(CPUDIV))
--		shift = PM_BFEXT(CPUSEL, cksel) + 1;
--
--	return bus_clk_get_rate(clk, shift);
--}
--
--static long cpu_clk_set_rate(struct clk *clk, unsigned long rate, int apply)
--{
--	u32 control;
--	unsigned long parent_rate, child_div, actual_rate, div;
--
--	parent_rate = clk->parent->get_rate(clk->parent);
--	control = pm_readl(CKSEL);
--
--	if (control & PM_BIT(HSBDIV))
--		child_div = 1 << (PM_BFEXT(HSBSEL, control) + 1);
--	else
--		child_div = 1;
--
--	if (rate > 3 * (parent_rate / 4) || child_div == 1) {
--		actual_rate = parent_rate;
--		control &= ~PM_BIT(CPUDIV);
--	} else {
--		unsigned int cpusel;
--		div = (parent_rate + rate / 2) / rate;
--		if (div > child_div)
--			div = child_div;
--		cpusel = (div > 1) ? (fls(div) - 2) : 0;
--		control = PM_BIT(CPUDIV) | PM_BFINS(CPUSEL, cpusel, control);
--		actual_rate = parent_rate / (1 << (cpusel + 1));
--	}
--
--	pr_debug("clk %s: new rate %lu (actual rate %lu)\n",
--			clk->name, rate, actual_rate);
--
--	if (apply)
--		pm_writel(CKSEL, control);
--
--	return actual_rate;
--}
--
--static void hsb_clk_mode(struct clk *clk, int enabled)
--{
--	unsigned long flags;
--	u32 mask;
--
--	spin_lock_irqsave(&pm_lock, flags);
--	mask = pm_readl(HSB_MASK);
--	if (enabled)
--		mask |= 1 << clk->index;
--	else
--		mask &= ~(1 << clk->index);
--	pm_writel(HSB_MASK, mask);
--	spin_unlock_irqrestore(&pm_lock, flags);
--}
--
--static unsigned long hsb_clk_get_rate(struct clk *clk)
--{
--	unsigned long cksel, shift = 0;
--
--	cksel = pm_readl(CKSEL);
--	if (cksel & PM_BIT(HSBDIV))
--		shift = PM_BFEXT(HSBSEL, cksel) + 1;
--
--	return bus_clk_get_rate(clk, shift);
--}
--
--static void pba_clk_mode(struct clk *clk, int enabled)
--{
--	unsigned long flags;
--	u32 mask;
--
--	spin_lock_irqsave(&pm_lock, flags);
--	mask = pm_readl(PBA_MASK);
--	if (enabled)
--		mask |= 1 << clk->index;
--	else
--		mask &= ~(1 << clk->index);
--	pm_writel(PBA_MASK, mask);
--	spin_unlock_irqrestore(&pm_lock, flags);
--}
--
--static unsigned long pba_clk_get_rate(struct clk *clk)
--{
--	unsigned long cksel, shift = 0;
--
--	cksel = pm_readl(CKSEL);
--	if (cksel & PM_BIT(PBADIV))
--		shift = PM_BFEXT(PBASEL, cksel) + 1;
--
--	return bus_clk_get_rate(clk, shift);
--}
--
--static void pbb_clk_mode(struct clk *clk, int enabled)
--{
--	unsigned long flags;
--	u32 mask;
--
--	spin_lock_irqsave(&pm_lock, flags);
--	mask = pm_readl(PBB_MASK);
--	if (enabled)
--		mask |= 1 << clk->index;
--	else
--		mask &= ~(1 << clk->index);
--	pm_writel(PBB_MASK, mask);
--	spin_unlock_irqrestore(&pm_lock, flags);
--}
--
--static unsigned long pbb_clk_get_rate(struct clk *clk)
--{
--	unsigned long cksel, shift = 0;
--
--	cksel = pm_readl(CKSEL);
--	if (cksel & PM_BIT(PBBDIV))
--		shift = PM_BFEXT(PBBSEL, cksel) + 1;
--
--	return bus_clk_get_rate(clk, shift);
--}
--
--static struct clk cpu_clk = {
--	.name		= "cpu",
--	.get_rate	= cpu_clk_get_rate,
--	.set_rate	= cpu_clk_set_rate,
--	.users		= 1,
--};
--static struct clk hsb_clk = {
--	.name		= "hsb",
--	.parent		= &cpu_clk,
--	.get_rate	= hsb_clk_get_rate,
--};
--static struct clk pba_clk = {
--	.name		= "pba",
--	.parent		= &hsb_clk,
--	.mode		= hsb_clk_mode,
--	.get_rate	= pba_clk_get_rate,
--	.index		= 1,
--};
--static struct clk pbb_clk = {
--	.name		= "pbb",
--	.parent		= &hsb_clk,
--	.mode		= hsb_clk_mode,
--	.get_rate	= pbb_clk_get_rate,
--	.users		= 1,
--	.index		= 2,
--};
--
--/* --------------------------------------------------------------------
-- *  Generic Clock operations
-- * -------------------------------------------------------------------- */
--
--static void genclk_mode(struct clk *clk, int enabled)
--{
--	u32 control;
--
--	control = pm_readl(GCCTRL(clk->index));
--	if (enabled)
--		control |= PM_BIT(CEN);
--	else
--		control &= ~PM_BIT(CEN);
--	pm_writel(GCCTRL(clk->index), control);
--}
--
--static unsigned long genclk_get_rate(struct clk *clk)
--{
--	u32 control;
--	unsigned long div = 1;
--
--	control = pm_readl(GCCTRL(clk->index));
--	if (control & PM_BIT(DIVEN))
--		div = 2 * (PM_BFEXT(DIV, control) + 1);
--
--	return clk->parent->get_rate(clk->parent) / div;
--}
--
--static long genclk_set_rate(struct clk *clk, unsigned long rate, int apply)
--{
--	u32 control;
--	unsigned long parent_rate, actual_rate, div;
--
--	parent_rate = clk->parent->get_rate(clk->parent);
--	control = pm_readl(GCCTRL(clk->index));
--
--	if (rate > 3 * parent_rate / 4) {
--		actual_rate = parent_rate;
--		control &= ~PM_BIT(DIVEN);
--	} else {
--		div = (parent_rate + rate) / (2 * rate) - 1;
--		control = PM_BFINS(DIV, div, control) | PM_BIT(DIVEN);
--		actual_rate = parent_rate / (2 * (div + 1));
--	}
--
--	dev_dbg(clk->dev, "clk %s: new rate %lu (actual rate %lu)\n",
--		clk->name, rate, actual_rate);
--
--	if (apply)
--		pm_writel(GCCTRL(clk->index), control);
--
--	return actual_rate;
--}
--
--int genclk_set_parent(struct clk *clk, struct clk *parent)
--{
--	u32 control;
--
--	dev_dbg(clk->dev, "clk %s: new parent %s (was %s)\n",
--		clk->name, parent->name, clk->parent->name);
--
--	control = pm_readl(GCCTRL(clk->index));
--
--	if (parent == &osc1 || parent == &pll1)
--		control |= PM_BIT(OSCSEL);
--	else if (parent == &osc0 || parent == &pll0)
--		control &= ~PM_BIT(OSCSEL);
--	else
--		return -EINVAL;
--
--	if (parent == &pll0 || parent == &pll1)
--		control |= PM_BIT(PLLSEL);
--	else
--		control &= ~PM_BIT(PLLSEL);
--
--	pm_writel(GCCTRL(clk->index), control);
--	clk->parent = parent;
--
--	return 0;
--}
--
--static void __init genclk_init_parent(struct clk *clk)
--{
--	u32 control;
--	struct clk *parent;
--
--	BUG_ON(clk->index > 7);
--
--	control = pm_readl(GCCTRL(clk->index));
--	if (control & PM_BIT(OSCSEL))
--		parent = (control & PM_BIT(PLLSEL)) ? &pll1 : &osc1;
--	else
--		parent = (control & PM_BIT(PLLSEL)) ? &pll0 : &osc0;
--
--	clk->parent = parent;
--}
--
--/* --------------------------------------------------------------------
-- *  System peripherals
-- * -------------------------------------------------------------------- */
--static struct resource at32_pm0_resource[] = {
--	{
--		.start	= 0xfff00000,
--		.end	= 0xfff0007f,
--		.flags	= IORESOURCE_MEM,
--	},
--	IRQ(20),
--};
--
--static struct resource at32ap700x_rtc0_resource[] = {
--	{
--		.start	= 0xfff00080,
--		.end	= 0xfff000af,
--		.flags	= IORESOURCE_MEM,
--	},
--	IRQ(21),
--};
--
--static struct resource at32_wdt0_resource[] = {
--	{
--		.start	= 0xfff000b0,
--		.end	= 0xfff000cf,
--		.flags	= IORESOURCE_MEM,
--	},
--};
--
--static struct resource at32_eic0_resource[] = {
--	{
--		.start	= 0xfff00100,
--		.end	= 0xfff0013f,
--		.flags	= IORESOURCE_MEM,
--	},
--	IRQ(19),
--};
--
--DEFINE_DEV(at32_pm, 0);
--DEFINE_DEV(at32ap700x_rtc, 0);
--DEFINE_DEV(at32_wdt, 0);
--DEFINE_DEV(at32_eic, 0);
--
--/*
-- * Peripheral clock for PM, RTC, WDT and EIC. PM will ensure that this
-- * is always running.
-- */
--static struct clk at32_pm_pclk = {
--	.name		= "pclk",
--	.dev		= &at32_pm0_device.dev,
--	.parent		= &pbb_clk,
--	.mode		= pbb_clk_mode,
--	.get_rate	= pbb_clk_get_rate,
--	.users		= 1,
--	.index		= 0,
--};
--
--static struct resource intc0_resource[] = {
--	PBMEM(0xfff00400),
--};
--struct platform_device at32_intc0_device = {
--	.name		= "intc",
--	.id		= 0,
--	.resource	= intc0_resource,
--	.num_resources	= ARRAY_SIZE(intc0_resource),
--};
--DEV_CLK(pclk, at32_intc0, pbb, 1);
--
--static struct clk ebi_clk = {
--	.name		= "ebi",
--	.parent		= &hsb_clk,
--	.mode		= hsb_clk_mode,
--	.get_rate	= hsb_clk_get_rate,
--	.users		= 1,
--};
--static struct clk hramc_clk = {
--	.name		= "hramc",
--	.parent		= &hsb_clk,
--	.mode		= hsb_clk_mode,
--	.get_rate	= hsb_clk_get_rate,
--	.users		= 1,
--	.index		= 3,
--};
--
--static struct resource smc0_resource[] = {
--	PBMEM(0xfff03400),
--};
--DEFINE_DEV(smc, 0);
--DEV_CLK(pclk, smc0, pbb, 13);
--DEV_CLK(mck, smc0, hsb, 0);
--
--static struct platform_device pdc_device = {
--	.name		= "pdc",
--	.id		= 0,
--};
--DEV_CLK(hclk, pdc, hsb, 4);
--DEV_CLK(pclk, pdc, pba, 16);
--
--static struct clk pico_clk = {
--	.name		= "pico",
--	.parent		= &cpu_clk,
--	.mode		= cpu_clk_mode,
--	.get_rate	= cpu_clk_get_rate,
--	.users		= 1,
--};
--
--static struct resource dmaca0_resource[] = {
--	{
--		.start	= 0xff200000,
--		.end	= 0xff20ffff,
--		.flags	= IORESOURCE_MEM,
--	},
--	IRQ(2),
--};
--DEFINE_DEV(dmaca, 0);
--DEV_CLK(hclk, dmaca0, hsb, 10);
--
--/* --------------------------------------------------------------------
-- * HMATRIX
-- * -------------------------------------------------------------------- */
--
--static struct clk hmatrix_clk = {
--	.name		= "hmatrix_clk",
--	.parent		= &pbb_clk,
--	.mode		= pbb_clk_mode,
--	.get_rate	= pbb_clk_get_rate,
--	.index		= 2,
--	.users		= 1,
--};
--#define HMATRIX_BASE	((void __iomem *)0xfff00800)
--
--#define hmatrix_readl(reg)					\
--	__raw_readl((HMATRIX_BASE) + HMATRIX_##reg)
--#define hmatrix_writel(reg,value)				\
--	__raw_writel((value), (HMATRIX_BASE) + HMATRIX_##reg)
--
--/*
-- * Set bits in the HMATRIX Special Function Register (SFR) used by the
-- * External Bus Interface (EBI). This can be used to enable special
-- * features like CompactFlash support, NAND Flash support, etc. on
-- * certain chipselects.
-- */
--static inline void set_ebi_sfr_bits(u32 mask)
--{
--	u32 sfr;
--
--	clk_enable(&hmatrix_clk);
--	sfr = hmatrix_readl(SFR4);
--	sfr |= mask;
--	hmatrix_writel(SFR4, sfr);
--	clk_disable(&hmatrix_clk);
--}
--
--/* --------------------------------------------------------------------
-- *  System Timer/Counter (TC)
-- * -------------------------------------------------------------------- */
--static struct resource at32_systc0_resource[] = {
--	PBMEM(0xfff00c00),
--	IRQ(22),
--};
--struct platform_device at32_systc0_device = {
--	.name		= "systc",
--	.id		= 0,
--	.resource	= at32_systc0_resource,
--	.num_resources	= ARRAY_SIZE(at32_systc0_resource),
--};
--DEV_CLK(pclk, at32_systc0, pbb, 3);
--
--/* --------------------------------------------------------------------
-- *  PIO
-- * -------------------------------------------------------------------- */
--
--static struct resource pio0_resource[] = {
--	PBMEM(0xffe02800),
--	IRQ(13),
--};
--DEFINE_DEV(pio, 0);
--DEV_CLK(mck, pio0, pba, 10);
--
--static struct resource pio1_resource[] = {
--	PBMEM(0xffe02c00),
--	IRQ(14),
--};
--DEFINE_DEV(pio, 1);
--DEV_CLK(mck, pio1, pba, 11);
--
--static struct resource pio2_resource[] = {
--	PBMEM(0xffe03000),
--	IRQ(15),
--};
--DEFINE_DEV(pio, 2);
--DEV_CLK(mck, pio2, pba, 12);
--
--static struct resource pio3_resource[] = {
--	PBMEM(0xffe03400),
--	IRQ(16),
--};
--DEFINE_DEV(pio, 3);
--DEV_CLK(mck, pio3, pba, 13);
--
--static struct resource pio4_resource[] = {
--	PBMEM(0xffe03800),
--	IRQ(17),
--};
--DEFINE_DEV(pio, 4);
--DEV_CLK(mck, pio4, pba, 14);
--
--void __init at32_add_system_devices(void)
--{
--	platform_device_register(&at32_pm0_device);
--	platform_device_register(&at32_intc0_device);
--	platform_device_register(&at32ap700x_rtc0_device);
--	platform_device_register(&at32_wdt0_device);
--	platform_device_register(&at32_eic0_device);
--	platform_device_register(&smc0_device);
--	platform_device_register(&pdc_device);
--	platform_device_register(&dmaca0_device);
--
--	platform_device_register(&at32_systc0_device);
--
--	platform_device_register(&pio0_device);
--	platform_device_register(&pio1_device);
--	platform_device_register(&pio2_device);
--	platform_device_register(&pio3_device);
--	platform_device_register(&pio4_device);
--}
--
--/* --------------------------------------------------------------------
-- *  USART
-- * -------------------------------------------------------------------- */
--
--static struct atmel_uart_data atmel_usart0_data = {
--	.use_dma_tx	= 1,
--	.use_dma_rx	= 1,
--};
--static struct resource atmel_usart0_resource[] = {
--	PBMEM(0xffe00c00),
--	IRQ(6),
--};
--DEFINE_DEV_DATA(atmel_usart, 0);
--DEV_CLK(usart, atmel_usart0, pba, 3);
--
--static struct atmel_uart_data atmel_usart1_data = {
--	.use_dma_tx	= 1,
--	.use_dma_rx	= 1,
--};
--static struct resource atmel_usart1_resource[] = {
--	PBMEM(0xffe01000),
--	IRQ(7),
--};
--DEFINE_DEV_DATA(atmel_usart, 1);
--DEV_CLK(usart, atmel_usart1, pba, 4);
--
--static struct atmel_uart_data atmel_usart2_data = {
--	.use_dma_tx	= 1,
--	.use_dma_rx	= 1,
--};
--static struct resource atmel_usart2_resource[] = {
--	PBMEM(0xffe01400),
--	IRQ(8),
--};
--DEFINE_DEV_DATA(atmel_usart, 2);
--DEV_CLK(usart, atmel_usart2, pba, 5);
--
--static struct atmel_uart_data atmel_usart3_data = {
--	.use_dma_tx	= 1,
--	.use_dma_rx	= 1,
--};
--static struct resource atmel_usart3_resource[] = {
--	PBMEM(0xffe01800),
--	IRQ(9),
--};
--DEFINE_DEV_DATA(atmel_usart, 3);
--DEV_CLK(usart, atmel_usart3, pba, 6);
--
--static inline void configure_usart0_pins(void)
--{
--	select_peripheral(PA(8),  PERIPH_B, 0);	/* RXD	*/
--	select_peripheral(PA(9),  PERIPH_B, 0);	/* TXD	*/
--}
--
--static inline void configure_usart1_pins(void)
--{
--	select_peripheral(PA(17), PERIPH_A, 0);	/* RXD	*/
--	select_peripheral(PA(18), PERIPH_A, 0);	/* TXD	*/
--}
--
--static inline void configure_usart2_pins(void)
--{
--	select_peripheral(PB(26), PERIPH_B, 0);	/* RXD	*/
--	select_peripheral(PB(27), PERIPH_B, 0);	/* TXD	*/
--}
--
--static inline void configure_usart3_pins(void)
--{
--	select_peripheral(PB(18), PERIPH_B, 0);	/* RXD	*/
--	select_peripheral(PB(17), PERIPH_B, 0);	/* TXD	*/
--}
--
--static struct platform_device *__initdata at32_usarts[4];
--
--void __init at32_map_usart(unsigned int hw_id, unsigned int line)
--{
--	struct platform_device *pdev;
--
--	switch (hw_id) {
--	case 0:
--		pdev = &atmel_usart0_device;
--		configure_usart0_pins();
--		break;
--	case 1:
--		pdev = &atmel_usart1_device;
--		configure_usart1_pins();
--		break;
--	case 2:
--		pdev = &atmel_usart2_device;
--		configure_usart2_pins();
--		break;
--	case 3:
--		pdev = &atmel_usart3_device;
--		configure_usart3_pins();
--		break;
--	default:
--		return;
--	}
--
--	if (PXSEG(pdev->resource[0].start) == P4SEG) {
--		/* Addresses in the P4 segment are permanently mapped 1:1 */
--		struct atmel_uart_data *data = pdev->dev.platform_data;
--		data->regs = (void __iomem *)pdev->resource[0].start;
--	}
--
--	pdev->id = line;
--	at32_usarts[line] = pdev;
--}
--
--struct platform_device *__init at32_add_device_usart(unsigned int id)
--{
--	platform_device_register(at32_usarts[id]);
--	return at32_usarts[id];
--}
--
--struct platform_device *atmel_default_console_device;
--
--void __init at32_setup_serial_console(unsigned int usart_id)
--{
--	atmel_default_console_device = at32_usarts[usart_id];
--}
--
--/* --------------------------------------------------------------------
-- *  Ethernet
-- * -------------------------------------------------------------------- */
--
--static struct eth_platform_data macb0_data;
--static struct resource macb0_resource[] = {
--	PBMEM(0xfff01800),
--	IRQ(25),
--};
--DEFINE_DEV_DATA(macb, 0);
--DEV_CLK(hclk, macb0, hsb, 8);
--DEV_CLK(pclk, macb0, pbb, 6);
--
--static struct eth_platform_data macb1_data;
--static struct resource macb1_resource[] = {
--	PBMEM(0xfff01c00),
--	IRQ(26),
--};
--DEFINE_DEV_DATA(macb, 1);
--DEV_CLK(hclk, macb1, hsb, 9);
--DEV_CLK(pclk, macb1, pbb, 7);
--
--struct platform_device *__init
--at32_add_device_eth(unsigned int id, struct eth_platform_data *data)
--{
--	struct platform_device *pdev;
--
--	switch (id) {
--	case 0:
--		pdev = &macb0_device;
--
--		select_peripheral(PC(3),  PERIPH_A, 0);	/* TXD0	*/
--		select_peripheral(PC(4),  PERIPH_A, 0);	/* TXD1	*/
--		select_peripheral(PC(7),  PERIPH_A, 0);	/* TXEN	*/
--		select_peripheral(PC(8),  PERIPH_A, 0);	/* TXCK */
--		select_peripheral(PC(9),  PERIPH_A, 0);	/* RXD0	*/
--		select_peripheral(PC(10), PERIPH_A, 0);	/* RXD1	*/
--		select_peripheral(PC(13), PERIPH_A, 0);	/* RXER	*/
--		select_peripheral(PC(15), PERIPH_A, 0);	/* RXDV	*/
--		select_peripheral(PC(16), PERIPH_A, 0);	/* MDC	*/
--		select_peripheral(PC(17), PERIPH_A, 0);	/* MDIO	*/
--
--		if (!data->is_rmii) {
--			select_peripheral(PC(0),  PERIPH_A, 0);	/* COL	*/
--			select_peripheral(PC(1),  PERIPH_A, 0);	/* CRS	*/
--			select_peripheral(PC(2),  PERIPH_A, 0);	/* TXER	*/
--			select_peripheral(PC(5),  PERIPH_A, 0);	/* TXD2	*/
--			select_peripheral(PC(6),  PERIPH_A, 0);	/* TXD3 */
--			select_peripheral(PC(11), PERIPH_A, 0);	/* RXD2	*/
--			select_peripheral(PC(12), PERIPH_A, 0);	/* RXD3	*/
--			select_peripheral(PC(14), PERIPH_A, 0);	/* RXCK	*/
--			select_peripheral(PC(18), PERIPH_A, 0);	/* SPD	*/
--		}
--		break;
--
--	case 1:
--		pdev = &macb1_device;
--
--		select_peripheral(PD(13), PERIPH_B, 0);		/* TXD0	*/
--		select_peripheral(PD(14), PERIPH_B, 0);		/* TXD1	*/
--		select_peripheral(PD(11), PERIPH_B, 0);		/* TXEN	*/
--		select_peripheral(PD(12), PERIPH_B, 0);		/* TXCK */
--		select_peripheral(PD(10), PERIPH_B, 0);		/* RXD0	*/
--		select_peripheral(PD(6),  PERIPH_B, 0);		/* RXD1	*/
--		select_peripheral(PD(5),  PERIPH_B, 0);		/* RXER	*/
--		select_peripheral(PD(4),  PERIPH_B, 0);		/* RXDV	*/
--		select_peripheral(PD(3),  PERIPH_B, 0);		/* MDC	*/
--		select_peripheral(PD(2),  PERIPH_B, 0);		/* MDIO	*/
--
--		if (!data->is_rmii) {
--			select_peripheral(PC(19), PERIPH_B, 0);	/* COL	*/
--			select_peripheral(PC(23), PERIPH_B, 0);	/* CRS	*/
--			select_peripheral(PC(26), PERIPH_B, 0);	/* TXER	*/
--			select_peripheral(PC(27), PERIPH_B, 0);	/* TXD2	*/
--			select_peripheral(PC(28), PERIPH_B, 0);	/* TXD3 */
--			select_peripheral(PC(29), PERIPH_B, 0);	/* RXD2	*/
--			select_peripheral(PC(30), PERIPH_B, 0);	/* RXD3	*/
--			select_peripheral(PC(24), PERIPH_B, 0);	/* RXCK	*/
--			select_peripheral(PD(15), PERIPH_B, 0);	/* SPD	*/
--		}
--		break;
--
--	default:
--		return NULL;
--	}
--
--	memcpy(pdev->dev.platform_data, data, sizeof(struct eth_platform_data));
--	platform_device_register(pdev);
--
--	return pdev;
--}
--
--/* --------------------------------------------------------------------
-- *  SPI
-- * -------------------------------------------------------------------- */
--static struct resource atmel_spi0_resource[] = {
--	PBMEM(0xffe00000),
--	IRQ(3),
--};
--DEFINE_DEV(atmel_spi, 0);
--DEV_CLK(spi_clk, atmel_spi0, pba, 0);
--
--static struct resource atmel_spi1_resource[] = {
--	PBMEM(0xffe00400),
--	IRQ(4),
--};
--DEFINE_DEV(atmel_spi, 1);
--DEV_CLK(spi_clk, atmel_spi1, pba, 1);
--
--static void __init
--at32_spi_setup_slaves(unsigned int bus_num, struct spi_board_info *b,
--		      unsigned int n, const u8 *pins)
--{
--	unsigned int pin, mode;
--
--	for (; n; n--, b++) {
--		b->bus_num = bus_num;
--		if (b->chip_select >= 4)
--			continue;
--		pin = (unsigned)b->controller_data;
--		if (!pin) {
--			pin = pins[b->chip_select];
--			b->controller_data = (void *)pin;
--		}
--		mode = AT32_GPIOF_OUTPUT;
--		if (!(b->mode & SPI_CS_HIGH))
--			mode |= AT32_GPIOF_HIGH;
--		at32_select_gpio(pin, mode);
--	}
--}
--
--struct platform_device *__init
--at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n)
--{
--	/*
--	 * Manage the chipselects as GPIOs, normally using the same pins
--	 * the SPI controller expects; but boards can use other pins.
--	 */
--	static u8 __initdata spi0_pins[] =
--		{ GPIO_PIN_PA(3), GPIO_PIN_PA(4),
--		  GPIO_PIN_PA(5), GPIO_PIN_PA(20), };
--	static u8 __initdata spi1_pins[] =
--		{ GPIO_PIN_PB(2), GPIO_PIN_PB(3),
--		  GPIO_PIN_PB(4), GPIO_PIN_PA(27), };
--	struct platform_device *pdev;
--
--	switch (id) {
--	case 0:
--		pdev = &atmel_spi0_device;
--		select_peripheral(PA(0),  PERIPH_A, 0);	/* MISO	 */
--		select_peripheral(PA(1),  PERIPH_A, 0);	/* MOSI	 */
--		select_peripheral(PA(2),  PERIPH_A, 0);	/* SCK	 */
--		at32_spi_setup_slaves(0, b, n, spi0_pins);
--		break;
--
--	case 1:
--		pdev = &atmel_spi1_device;
--		select_peripheral(PB(0),  PERIPH_B, 0);	/* MISO  */
--		select_peripheral(PB(1),  PERIPH_B, 0);	/* MOSI  */
--		select_peripheral(PB(5),  PERIPH_B, 0);	/* SCK   */
--		at32_spi_setup_slaves(1, b, n, spi1_pins);
--		break;
--
--	default:
--		return NULL;
--	}
--
--	spi_register_board_info(b, n);
--	platform_device_register(pdev);
--	return pdev;
--}
--
--/* --------------------------------------------------------------------
-- *  TWI
-- * -------------------------------------------------------------------- */
--static struct resource atmel_twi0_resource[] __initdata = {
--	PBMEM(0xffe00800),
--	IRQ(5),
--};
--static struct clk atmel_twi0_pclk = {
--	.name		= "twi_pclk",
--	.parent		= &pba_clk,
--	.mode		= pba_clk_mode,
--	.get_rate	= pba_clk_get_rate,
--	.index		= 2,
--};
--
--struct platform_device *__init at32_add_device_twi(unsigned int id)
--{
--	struct platform_device *pdev;
--
--	if (id != 0)
--		return NULL;
--
--	pdev = platform_device_alloc("atmel_twi", id);
--	if (!pdev)
--		return NULL;
--
--	if (platform_device_add_resources(pdev, atmel_twi0_resource,
--				ARRAY_SIZE(atmel_twi0_resource)))
--		goto err_add_resources;
--
--	select_peripheral(PA(6),  PERIPH_A, 0);	/* SDA	*/
--	select_peripheral(PA(7),  PERIPH_A, 0);	/* SDL	*/
--
--	atmel_twi0_pclk.dev = &pdev->dev;
--
--	platform_device_add(pdev);
--	return pdev;
--
--err_add_resources:
--	platform_device_put(pdev);
--	return NULL;
--}
--
--/* --------------------------------------------------------------------
-- * MMC
-- * -------------------------------------------------------------------- */
--static struct resource atmel_mci0_resource[] __initdata = {
--	PBMEM(0xfff02400),
--	IRQ(28),
--};
--static struct clk atmel_mci0_pclk = {
--	.name		= "mci_clk",
--	.parent		= &pbb_clk,
--	.mode		= pbb_clk_mode,
--	.get_rate	= pbb_clk_get_rate,
--	.index		= 9,
--};
--
--struct platform_device *__init at32_add_device_mci(unsigned int id)
--{
--	struct platform_device *pdev;
--
--	if (id != 0)
--		return NULL;
--
--	pdev = platform_device_alloc("atmel_mci", id);
--	if (!pdev)
--		return NULL;
--
--	if (platform_device_add_resources(pdev, atmel_mci0_resource,
--				ARRAY_SIZE(atmel_mci0_resource)))
--		goto err_add_resources;
--
--	select_peripheral(PA(10), PERIPH_A, 0);	/* CLK	 */
--	select_peripheral(PA(11), PERIPH_A, 0);	/* CMD	 */
--	select_peripheral(PA(12), PERIPH_A, 0);	/* DATA0 */
--	select_peripheral(PA(13), PERIPH_A, 0);	/* DATA1 */
--	select_peripheral(PA(14), PERIPH_A, 0);	/* DATA2 */
--	select_peripheral(PA(15), PERIPH_A, 0);	/* DATA3 */
--
--	atmel_mci0_pclk.dev = &pdev->dev;
--
--	platform_device_add(pdev);
--	return pdev;
--
--err_add_resources:
--	platform_device_put(pdev);
--	return NULL;
--}
--
--/* --------------------------------------------------------------------
-- *  LCDC
-- * -------------------------------------------------------------------- */
--static struct atmel_lcdfb_info atmel_lcdfb0_data;
--static struct resource atmel_lcdfb0_resource[] = {
--	{
--		.start		= 0xff000000,
--		.end		= 0xff000fff,
--		.flags		= IORESOURCE_MEM,
--	},
--	IRQ(1),
--	{
--		/* Placeholder for pre-allocated fb memory */
--		.start		= 0x00000000,
--		.end		= 0x00000000,
--		.flags		= 0,
--	},
--};
--DEFINE_DEV_DATA(atmel_lcdfb, 0);
--DEV_CLK(hck1, atmel_lcdfb0, hsb, 7);
--static struct clk atmel_lcdfb0_pixclk = {
--	.name		= "lcdc_clk",
--	.dev		= &atmel_lcdfb0_device.dev,
--	.mode		= genclk_mode,
--	.get_rate	= genclk_get_rate,
--	.set_rate	= genclk_set_rate,
--	.set_parent	= genclk_set_parent,
--	.index		= 7,
--};
--
--struct platform_device *__init
--at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
--		     unsigned long fbmem_start, unsigned long fbmem_len)
--{
--	struct platform_device *pdev;
--	struct atmel_lcdfb_info *info;
--	struct fb_monspecs *monspecs;
--	struct fb_videomode *modedb;
--	unsigned int modedb_size;
--
--	/*
--	 * Do a deep copy of the fb data, monspecs and modedb. Make
--	 * sure all allocations are done before setting up the
--	 * portmux.
--	 */
--	monspecs = kmemdup(data->default_monspecs,
--			   sizeof(struct fb_monspecs), GFP_KERNEL);
--	if (!monspecs)
--		return NULL;
--
--	modedb_size = sizeof(struct fb_videomode) * monspecs->modedb_len;
--	modedb = kmemdup(monspecs->modedb, modedb_size, GFP_KERNEL);
--	if (!modedb)
--		goto err_dup_modedb;
--	monspecs->modedb = modedb;
--
--	switch (id) {
--	case 0:
--		pdev = &atmel_lcdfb0_device;
--		select_peripheral(PC(19), PERIPH_A, 0);	/* CC	  */
--		select_peripheral(PC(20), PERIPH_A, 0);	/* HSYNC  */
--		select_peripheral(PC(21), PERIPH_A, 0);	/* PCLK	  */
--		select_peripheral(PC(22), PERIPH_A, 0);	/* VSYNC  */
--		select_peripheral(PC(23), PERIPH_A, 0);	/* DVAL	  */
--		select_peripheral(PC(24), PERIPH_A, 0);	/* MODE	  */
--		select_peripheral(PC(25), PERIPH_A, 0);	/* PWR	  */
--		select_peripheral(PC(26), PERIPH_A, 0);	/* DATA0  */
--		select_peripheral(PC(27), PERIPH_A, 0);	/* DATA1  */
--		select_peripheral(PC(28), PERIPH_A, 0);	/* DATA2  */
--		select_peripheral(PC(29), PERIPH_A, 0);	/* DATA3  */
--		select_peripheral(PC(30), PERIPH_A, 0);	/* DATA4  */
--		select_peripheral(PC(31), PERIPH_A, 0);	/* DATA5  */
--		select_peripheral(PD(0),  PERIPH_A, 0);	/* DATA6  */
--		select_peripheral(PD(1),  PERIPH_A, 0);	/* DATA7  */
--		select_peripheral(PD(2),  PERIPH_A, 0);	/* DATA8  */
--		select_peripheral(PD(3),  PERIPH_A, 0);	/* DATA9  */
--		select_peripheral(PD(4),  PERIPH_A, 0);	/* DATA10 */
--		select_peripheral(PD(5),  PERIPH_A, 0);	/* DATA11 */
--		select_peripheral(PD(6),  PERIPH_A, 0);	/* DATA12 */
--		select_peripheral(PD(7),  PERIPH_A, 0);	/* DATA13 */
--		select_peripheral(PD(8),  PERIPH_A, 0);	/* DATA14 */
--		select_peripheral(PD(9),  PERIPH_A, 0);	/* DATA15 */
--		select_peripheral(PD(10), PERIPH_A, 0);	/* DATA16 */
--		select_peripheral(PD(11), PERIPH_A, 0);	/* DATA17 */
--		select_peripheral(PD(12), PERIPH_A, 0);	/* DATA18 */
--		select_peripheral(PD(13), PERIPH_A, 0);	/* DATA19 */
--		select_peripheral(PD(14), PERIPH_A, 0);	/* DATA20 */
--		select_peripheral(PD(15), PERIPH_A, 0);	/* DATA21 */
--		select_peripheral(PD(16), PERIPH_A, 0);	/* DATA22 */
--		select_peripheral(PD(17), PERIPH_A, 0);	/* DATA23 */
--
--		clk_set_parent(&atmel_lcdfb0_pixclk, &pll0);
--		clk_set_rate(&atmel_lcdfb0_pixclk, clk_get_rate(&pll0));
--		break;
--
--	default:
--		goto err_invalid_id;
--	}
--
--	if (fbmem_len) {
--		pdev->resource[2].start = fbmem_start;
--		pdev->resource[2].end = fbmem_start + fbmem_len - 1;
--		pdev->resource[2].flags = IORESOURCE_MEM;
--	}
--
--	info = pdev->dev.platform_data;
--	memcpy(info, data, sizeof(struct atmel_lcdfb_info));
--	info->default_monspecs = monspecs;
--
--	platform_device_register(pdev);
--	return pdev;
--
--err_invalid_id:
--	kfree(modedb);
--err_dup_modedb:
--	kfree(monspecs);
--	return NULL;
--}
--
--/* --------------------------------------------------------------------
-- *  SSC
-- * -------------------------------------------------------------------- */
--static struct resource ssc0_resource[] = {
--	PBMEM(0xffe01c00),
--	IRQ(10),
--};
--DEFINE_DEV(ssc, 0);
--DEV_CLK(pclk, ssc0, pba, 7);
--
--static struct resource ssc1_resource[] = {
--	PBMEM(0xffe02000),
--	IRQ(11),
--};
--DEFINE_DEV(ssc, 1);
--DEV_CLK(pclk, ssc1, pba, 8);
--
--static struct resource ssc2_resource[] = {
--	PBMEM(0xffe02400),
--	IRQ(12),
--};
--DEFINE_DEV(ssc, 2);
--DEV_CLK(pclk, ssc2, pba, 9);
--
--struct platform_device *__init
--at32_add_device_ssc(unsigned int id, unsigned int flags)
--{
--	struct platform_device *pdev;
--
--	switch (id) {
--	case 0:
--		pdev = &ssc0_device;
--		if (flags & ATMEL_SSC_RF)
--			select_peripheral(PA(21), PERIPH_A, 0);	/* RF */
--		if (flags & ATMEL_SSC_RK)
--			select_peripheral(PA(22), PERIPH_A, 0);	/* RK */
--		if (flags & ATMEL_SSC_TK)
--			select_peripheral(PA(23), PERIPH_A, 0);	/* TK */
--		if (flags & ATMEL_SSC_TF)
--			select_peripheral(PA(24), PERIPH_A, 0);	/* TF */
--		if (flags & ATMEL_SSC_TD)
--			select_peripheral(PA(25), PERIPH_A, 0);	/* TD */
--		if (flags & ATMEL_SSC_RD)
--			select_peripheral(PA(26), PERIPH_A, 0);	/* RD */
--		break;
--	case 1:
--		pdev = &ssc1_device;
--		if (flags & ATMEL_SSC_RF)
--			select_peripheral(PA(0), PERIPH_B, 0);	/* RF */
--		if (flags & ATMEL_SSC_RK)
--			select_peripheral(PA(1), PERIPH_B, 0);	/* RK */
--		if (flags & ATMEL_SSC_TK)
--			select_peripheral(PA(2), PERIPH_B, 0);	/* TK */
--		if (flags & ATMEL_SSC_TF)
--			select_peripheral(PA(3), PERIPH_B, 0);	/* TF */
--		if (flags & ATMEL_SSC_TD)
--			select_peripheral(PA(4), PERIPH_B, 0);	/* TD */
--		if (flags & ATMEL_SSC_RD)
--			select_peripheral(PA(5), PERIPH_B, 0);	/* RD */
--		break;
--	case 2:
--		pdev = &ssc2_device;
--		if (flags & ATMEL_SSC_TD)
--			select_peripheral(PB(13), PERIPH_A, 0);	/* TD */
--		if (flags & ATMEL_SSC_RD)
--			select_peripheral(PB(14), PERIPH_A, 0);	/* RD */
--		if (flags & ATMEL_SSC_TK)
--			select_peripheral(PB(15), PERIPH_A, 0);	/* TK */
--		if (flags & ATMEL_SSC_TF)
--			select_peripheral(PB(16), PERIPH_A, 0);	/* TF */
--		if (flags & ATMEL_SSC_RF)
--			select_peripheral(PB(17), PERIPH_A, 0);	/* RF */
--		if (flags & ATMEL_SSC_RK)
--			select_peripheral(PB(18), PERIPH_A, 0);	/* RK */
--		break;
--	default:
--		return NULL;
--	}
--
--	platform_device_register(pdev);
--	return pdev;
--}
--
--/* --------------------------------------------------------------------
-- *  USB Device Controller
-- * -------------------------------------------------------------------- */
--static struct resource usba0_resource[] __initdata = {
--	{
--		.start		= 0xff300000,
--		.end		= 0xff3fffff,
--		.flags		= IORESOURCE_MEM,
--	}, {
--		.start		= 0xfff03000,
--		.end		= 0xfff033ff,
--		.flags		= IORESOURCE_MEM,
--	},
--	IRQ(31),
--};
--static struct clk usba0_pclk = {
--	.name		= "pclk",
--	.parent		= &pbb_clk,
--	.mode		= pbb_clk_mode,
--	.get_rate	= pbb_clk_get_rate,
--	.index		= 12,
--};
--static struct clk usba0_hclk = {
--	.name		= "hclk",
--	.parent		= &hsb_clk,
--	.mode		= hsb_clk_mode,
--	.get_rate	= hsb_clk_get_rate,
--	.index		= 6,
--};
--
--struct platform_device *__init
--at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
--{
--	struct platform_device *pdev;
--
--	if (id != 0)
--		return NULL;
--
--	pdev = platform_device_alloc("atmel_usba_udc", 0);
--	if (!pdev)
--		return NULL;
--
--	if (platform_device_add_resources(pdev, usba0_resource,
--					  ARRAY_SIZE(usba0_resource)))
--		goto out_free_pdev;
--
--	if (data) {
--		if (platform_device_add_data(pdev, data, sizeof(*data)))
--			goto out_free_pdev;
--
--		if (data->vbus_pin != GPIO_PIN_NONE)
--			at32_select_gpio(data->vbus_pin, 0);
--	}
--
--	usba0_pclk.dev = &pdev->dev;
--	usba0_hclk.dev = &pdev->dev;
--
--	platform_device_add(pdev);
--
--	return pdev;
--
--out_free_pdev:
--	platform_device_put(pdev);
--	return NULL;
--}
--
--/* --------------------------------------------------------------------
-- * IDE / CompactFlash
-- * -------------------------------------------------------------------- */
--static struct resource at32_smc_cs4_resource[] __initdata = {
--	{
--		.start	= 0x04000000,
--		.end	= 0x07ffffff,
--		.flags	= IORESOURCE_MEM,
--	},
--	IRQ(~0UL), /* Magic IRQ will be overridden */
--};
--static struct resource at32_smc_cs5_resource[] __initdata = {
--	{
--		.start	= 0x20000000,
--		.end	= 0x23ffffff,
--		.flags	= IORESOURCE_MEM,
--	},
--	IRQ(~0UL), /* Magic IRQ will be overridden */
--};
--
--static int __init at32_init_ide_or_cf(struct platform_device *pdev,
--		unsigned int cs, unsigned int extint)
--{
--	static unsigned int extint_pin_map[4] __initdata = {
--		GPIO_PIN_PB(25),
--		GPIO_PIN_PB(26),
--		GPIO_PIN_PB(27),
--		GPIO_PIN_PB(28),
--	};
--	static bool common_pins_initialized __initdata = false;
--	unsigned int extint_pin;
--	int ret;
--
--	if (extint >= ARRAY_SIZE(extint_pin_map))
--		return -EINVAL;
--	extint_pin = extint_pin_map[extint];
--
--	switch (cs) {
--	case 4:
--		ret = platform_device_add_resources(pdev,
--				at32_smc_cs4_resource,
--				ARRAY_SIZE(at32_smc_cs4_resource));
--		if (ret)
--			return ret;
--
--		select_peripheral(PE(21), PERIPH_A, 0); /* NCS4   -> OE_N  */
--		set_ebi_sfr_bits(HMATRIX_BIT(CS4A));
--		break;
--	case 5:
--		ret = platform_device_add_resources(pdev,
--				at32_smc_cs5_resource,
--				ARRAY_SIZE(at32_smc_cs5_resource));
--		if (ret)
--			return ret;
--
--		select_peripheral(PE(22), PERIPH_A, 0); /* NCS5   -> OE_N  */
--		set_ebi_sfr_bits(HMATRIX_BIT(CS5A));
--		break;
--	default:
--		return -EINVAL;
--	}
--
--	if (!common_pins_initialized) {
--		select_peripheral(PE(19), PERIPH_A, 0);	/* CFCE1  -> CS0_N */
--		select_peripheral(PE(20), PERIPH_A, 0);	/* CFCE2  -> CS1_N */
--		select_peripheral(PE(23), PERIPH_A, 0); /* CFRNW  -> DIR   */
--		select_peripheral(PE(24), PERIPH_A, 0); /* NWAIT  <- IORDY */
--		common_pins_initialized = true;
--	}
--
--	at32_select_periph(extint_pin, GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
--
--	pdev->resource[1].start = EIM_IRQ_BASE + extint;
--	pdev->resource[1].end = pdev->resource[1].start;
--
--	return 0;
--}
--
--struct platform_device *__init
--at32_add_device_ide(unsigned int id, unsigned int extint,
--		    struct ide_platform_data *data)
--{
--	struct platform_device *pdev;
--
--	pdev = platform_device_alloc("at32_ide", id);
--	if (!pdev)
--		goto fail;
--
--	if (platform_device_add_data(pdev, data,
--				sizeof(struct ide_platform_data)))
--		goto fail;
--
--	if (at32_init_ide_or_cf(pdev, data->cs, extint))
--		goto fail;
--
--	platform_device_add(pdev);
--	return pdev;
--
--fail:
--	platform_device_put(pdev);
--	return NULL;
--}
--
--struct platform_device *__init
--at32_add_device_cf(unsigned int id, unsigned int extint,
--		    struct cf_platform_data *data)
--{
--	struct platform_device *pdev;
--
--	pdev = platform_device_alloc("at32_cf", id);
--	if (!pdev)
--		goto fail;
--
--	if (platform_device_add_data(pdev, data,
--				sizeof(struct cf_platform_data)))
--		goto fail;
--
--	if (at32_init_ide_or_cf(pdev, data->cs, extint))
--		goto fail;
--
--	if (data->detect_pin != GPIO_PIN_NONE)
--		at32_select_gpio(data->detect_pin, AT32_GPIOF_DEGLITCH);
--	if (data->reset_pin != GPIO_PIN_NONE)
--		at32_select_gpio(data->reset_pin, 0);
--	if (data->vcc_pin != GPIO_PIN_NONE)
--		at32_select_gpio(data->vcc_pin, 0);
--	/* READY is used as extint, so we can't select it as gpio */
--
--	platform_device_add(pdev);
--	return pdev;
--
--fail:
--	platform_device_put(pdev);
--	return NULL;
--}
--
--/* --------------------------------------------------------------------
-- * AC97C
-- * -------------------------------------------------------------------- */
--static struct resource atmel_ac97c0_resource[] __initdata = {
--	PBMEM(0xfff02800),
--	IRQ(29),
--};
--static struct clk atmel_ac97c0_pclk = {
--	.name		= "pclk",
--	.parent		= &pbb_clk,
--	.mode		= pbb_clk_mode,
--	.get_rate	= pbb_clk_get_rate,
--	.index		= 10,
--};
--
--struct platform_device *__init at32_add_device_ac97c(unsigned int id)
--{
--	struct platform_device *pdev;
--
--	if (id != 0)
--		return NULL;
--
--	pdev = platform_device_alloc("atmel_ac97c", id);
--	if (!pdev)
--		return NULL;
--
--	if (platform_device_add_resources(pdev, atmel_ac97c0_resource,
--				ARRAY_SIZE(atmel_ac97c0_resource)))
--		goto err_add_resources;
--
--	select_peripheral(PB(20), PERIPH_B, 0);	/* SYNC	*/
--	select_peripheral(PB(21), PERIPH_B, 0);	/* SDO	*/
--	select_peripheral(PB(22), PERIPH_B, 0);	/* SDI	*/
--	select_peripheral(PB(23), PERIPH_B, 0);	/* SCLK	*/
--
--	atmel_ac97c0_pclk.dev = &pdev->dev;
--
--	platform_device_add(pdev);
--	return pdev;
--
--err_add_resources:
--	platform_device_put(pdev);
--	return NULL;
--}
--
--/* --------------------------------------------------------------------
-- * ABDAC
-- * -------------------------------------------------------------------- */
--static struct resource abdac0_resource[] __initdata = {
--	PBMEM(0xfff02000),
--	IRQ(27),
--};
--static struct clk abdac0_pclk = {
--	.name		= "pclk",
--	.parent		= &pbb_clk,
--	.mode		= pbb_clk_mode,
--	.get_rate	= pbb_clk_get_rate,
--	.index		= 8,
--};
--static struct clk abdac0_sample_clk = {
--	.name		= "sample_clk",
--	.mode		= genclk_mode,
--	.get_rate	= genclk_get_rate,
--	.set_rate	= genclk_set_rate,
--	.set_parent	= genclk_set_parent,
--	.index		= 6,
--};
--
--struct platform_device *__init at32_add_device_abdac(unsigned int id)
--{
--	struct platform_device *pdev;
--
--	if (id != 0)
--		return NULL;
--
--	pdev = platform_device_alloc("abdac", id);
--	if (!pdev)
--		return NULL;
--
--	if (platform_device_add_resources(pdev, abdac0_resource,
--				ARRAY_SIZE(abdac0_resource)))
--		goto err_add_resources;
--
--	select_peripheral(PB(20), PERIPH_A, 0);	/* DATA1	*/
--	select_peripheral(PB(21), PERIPH_A, 0);	/* DATA0	*/
--	select_peripheral(PB(22), PERIPH_A, 0);	/* DATAN1	*/
--	select_peripheral(PB(23), PERIPH_A, 0);	/* DATAN0	*/
--
--	abdac0_pclk.dev = &pdev->dev;
--	abdac0_sample_clk.dev = &pdev->dev;
--
--	platform_device_add(pdev);
--	return pdev;
--
--err_add_resources:
--	platform_device_put(pdev);
--	return NULL;
--}
--
--/* --------------------------------------------------------------------
-- *  GCLK
-- * -------------------------------------------------------------------- */
--static struct clk gclk0 = {
--	.name		= "gclk0",
--	.mode		= genclk_mode,
--	.get_rate	= genclk_get_rate,
--	.set_rate	= genclk_set_rate,
--	.set_parent	= genclk_set_parent,
--	.index		= 0,
--};
--static struct clk gclk1 = {
--	.name		= "gclk1",
--	.mode		= genclk_mode,
--	.get_rate	= genclk_get_rate,
--	.set_rate	= genclk_set_rate,
--	.set_parent	= genclk_set_parent,
--	.index		= 1,
--};
--static struct clk gclk2 = {
--	.name		= "gclk2",
--	.mode		= genclk_mode,
--	.get_rate	= genclk_get_rate,
--	.set_rate	= genclk_set_rate,
--	.set_parent	= genclk_set_parent,
--	.index		= 2,
--};
--static struct clk gclk3 = {
--	.name		= "gclk3",
--	.mode		= genclk_mode,
--	.get_rate	= genclk_get_rate,
--	.set_rate	= genclk_set_rate,
--	.set_parent	= genclk_set_parent,
--	.index		= 3,
--};
--static struct clk gclk4 = {
--	.name		= "gclk4",
--	.mode		= genclk_mode,
--	.get_rate	= genclk_get_rate,
--	.set_rate	= genclk_set_rate,
--	.set_parent	= genclk_set_parent,
--	.index		= 4,
--};
--
--struct clk *at32_clock_list[] = {
--	&osc32k,
--	&osc0,
--	&osc1,
--	&pll0,
--	&pll1,
--	&cpu_clk,
--	&hsb_clk,
--	&pba_clk,
--	&pbb_clk,
--	&at32_pm_pclk,
--	&at32_intc0_pclk,
--	&hmatrix_clk,
--	&ebi_clk,
--	&hramc_clk,
--	&smc0_pclk,
--	&smc0_mck,
--	&pdc_hclk,
--	&pdc_pclk,
--	&dmaca0_hclk,
--	&pico_clk,
--	&pio0_mck,
--	&pio1_mck,
--	&pio2_mck,
--	&pio3_mck,
--	&pio4_mck,
--	&at32_systc0_pclk,
--	&atmel_usart0_usart,
--	&atmel_usart1_usart,
--	&atmel_usart2_usart,
--	&atmel_usart3_usart,
--	&macb0_hclk,
--	&macb0_pclk,
--	&macb1_hclk,
--	&macb1_pclk,
--	&atmel_spi0_spi_clk,
--	&atmel_spi1_spi_clk,
--	&atmel_twi0_pclk,
--	&atmel_mci0_pclk,
--	&atmel_lcdfb0_hck1,
--	&atmel_lcdfb0_pixclk,
--	&ssc0_pclk,
--	&ssc1_pclk,
--	&ssc2_pclk,
--	&usba0_hclk,
--	&usba0_pclk,
--	&atmel_ac97c0_pclk,
--	&abdac0_pclk,
--	&abdac0_sample_clk,
--	&gclk0,
--	&gclk1,
--	&gclk2,
--	&gclk3,
--	&gclk4,
--};
--unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list);
--
--void __init at32_portmux_init(void)
--{
--	at32_init_pio(&pio0_device);
--	at32_init_pio(&pio1_device);
--	at32_init_pio(&pio2_device);
--	at32_init_pio(&pio3_device);
--	at32_init_pio(&pio4_device);
--}
--
--void __init at32_clock_init(void)
--{
--	u32 cpu_mask = 0, hsb_mask = 0, pba_mask = 0, pbb_mask = 0;
--	int i;
--
--	if (pm_readl(MCCTRL) & PM_BIT(PLLSEL)) {
--		main_clock = &pll0;
--		cpu_clk.parent = &pll0;
--	} else {
--		main_clock = &osc0;
--		cpu_clk.parent = &osc0;
--	}
--
--	if (pm_readl(PLL0) & PM_BIT(PLLOSC))
--		pll0.parent = &osc1;
--	if (pm_readl(PLL1) & PM_BIT(PLLOSC))
--		pll1.parent = &osc1;
--
--	genclk_init_parent(&gclk0);
--	genclk_init_parent(&gclk1);
--	genclk_init_parent(&gclk2);
--	genclk_init_parent(&gclk3);
--	genclk_init_parent(&gclk4);
--	genclk_init_parent(&atmel_lcdfb0_pixclk);
--	genclk_init_parent(&abdac0_sample_clk);
--
--	/*
--	 * Turn on all clocks that have at least one user already, and
--	 * turn off everything else. We only do this for module
--	 * clocks, and even though it isn't particularly pretty to
--	 * check the address of the mode function, it should do the
--	 * trick...
--	 */
--	for (i = 0; i < ARRAY_SIZE(at32_clock_list); i++) {
--		struct clk *clk = at32_clock_list[i];
--
--		if (clk->users == 0)
--			continue;
--
--		if (clk->mode == &cpu_clk_mode)
--			cpu_mask |= 1 << clk->index;
--		else if (clk->mode == &hsb_clk_mode)
--			hsb_mask |= 1 << clk->index;
--		else if (clk->mode == &pba_clk_mode)
--			pba_mask |= 1 << clk->index;
--		else if (clk->mode == &pbb_clk_mode)
--			pbb_mask |= 1 << clk->index;
--	}
--
--	pm_writel(CPU_MASK, cpu_mask);
--	pm_writel(HSB_MASK, hsb_mask);
--	pm_writel(PBA_MASK, pba_mask);
--	pm_writel(PBB_MASK, pbb_mask);
--}
---- /dev/null
-+++ b/arch/avr32/mach-at32ap/at32ap700x.c
-@@ -0,0 +1,1944 @@
-+/*
-+ * Copyright (C) 2005-2006 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#include <linux/clk.h>
-+#include <linux/fb.h>
-+#include <linux/init.h>
-+#include <linux/platform_device.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/spi/spi.h>
-+#include <linux/usb/atmel_usba_udc.h>
-+
-+#include <asm/io.h>
-+#include <asm/irq.h>
-+
-+#include <asm/arch/at32ap700x.h>
-+#include <asm/arch/board.h>
-+#include <asm/arch/portmux.h>
-+
-+#include <video/atmel_lcdc.h>
-+
-+#include "clock.h"
-+#include "hmatrix.h"
-+#include "pio.h"
-+#include "pm.h"
-+
-+
-+#define PBMEM(base)					\
-+	{						\
-+		.start		= base,			\
-+		.end		= base + 0x3ff,		\
-+		.flags		= IORESOURCE_MEM,	\
-+	}
-+#define IRQ(num)					\
-+	{						\
-+		.start		= num,			\
-+		.end		= num,			\
-+		.flags		= IORESOURCE_IRQ,	\
-+	}
-+#define NAMED_IRQ(num, _name)				\
-+	{						\
-+		.start		= num,			\
-+		.end		= num,			\
-+		.name		= _name,		\
-+		.flags		= IORESOURCE_IRQ,	\
-+	}
-+
-+/* REVISIT these assume *every* device supports DMA, but several
-+ * don't ... tc, smc, pio, rtc, watchdog, pwm, ps2, and more.
-+ */
-+#define DEFINE_DEV(_name, _id)					\
-+static u64 _name##_id##_dma_mask = DMA_32BIT_MASK;		\
-+static struct platform_device _name##_id##_device = {		\
-+	.name		= #_name,				\
-+	.id		= _id,					\
-+	.dev		= {					\
-+		.dma_mask = &_name##_id##_dma_mask,		\
-+		.coherent_dma_mask = DMA_32BIT_MASK,		\
-+	},							\
-+	.resource	= _name##_id##_resource,		\
-+	.num_resources	= ARRAY_SIZE(_name##_id##_resource),	\
-+}
-+#define DEFINE_DEV_DATA(_name, _id)				\
-+static u64 _name##_id##_dma_mask = DMA_32BIT_MASK;		\
-+static struct platform_device _name##_id##_device = {		\
-+	.name		= #_name,				\
-+	.id		= _id,					\
-+	.dev		= {					\
-+		.dma_mask = &_name##_id##_dma_mask,		\
-+		.platform_data	= &_name##_id##_data,		\
-+		.coherent_dma_mask = DMA_32BIT_MASK,		\
-+	},							\
-+	.resource	= _name##_id##_resource,		\
-+	.num_resources	= ARRAY_SIZE(_name##_id##_resource),	\
-+}
-+
-+#define select_peripheral(pin, periph, flags)			\
-+	at32_select_periph(GPIO_PIN_##pin, GPIO_##periph, flags)
-+
-+#define DEV_CLK(_name, devname, bus, _index)			\
-+static struct clk devname##_##_name = {				\
-+	.name		= #_name,				\
-+	.dev		= &devname##_device.dev,		\
-+	.parent		= &bus##_clk,				\
-+	.mode		= bus##_clk_mode,			\
-+	.get_rate	= bus##_clk_get_rate,			\
-+	.index		= _index,				\
-+}
-+
-+static DEFINE_SPINLOCK(pm_lock);
-+
-+unsigned long at32ap7000_osc_rates[3] = {
-+	[0] = 32768,
-+	/* FIXME: these are ATSTK1002-specific */
-+	[1] = 20000000,
-+	[2] = 12000000,
-+};
-+
-+static unsigned long osc_get_rate(struct clk *clk)
-+{
-+	return at32ap7000_osc_rates[clk->index];
-+}
-+
-+static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
-+{
-+	unsigned long div, mul, rate;
-+
-+	if (!(control & PM_BIT(PLLEN)))
-+		return 0;
-+
-+	div = PM_BFEXT(PLLDIV, control) + 1;
-+	mul = PM_BFEXT(PLLMUL, control) + 1;
+ 	div = PM_BFEXT(PLLDIV, control) + 1;
+ 	mul = PM_BFEXT(PLLMUL, control) + 1;
+ 
+@@ -120,6 +116,71 @@
+ 	return rate;
+ }
+ 
++static long pll_set_rate(struct clk *clk, unsigned long rate,
++			 u32 *pll_ctrl)
++{
++	unsigned long mul;
++	unsigned long mul_best_fit = 0;
++	unsigned long div;
++	unsigned long div_min;
++	unsigned long div_max;
++	unsigned long div_best_fit = 0;
++	unsigned long base;
++	unsigned long pll_in;
++	unsigned long actual = 0;
++	unsigned long rate_error;
++	unsigned long rate_error_prev = ~0UL;
++	u32 ctrl;
++
++	/* Rate must be between 80 MHz and 200 Mhz. */
++	if (rate < 80000000UL || rate > 200000000UL)
++		return -EINVAL;
 +
-+	rate = clk->parent->get_rate(clk->parent);
-+	rate = (rate + div / 2) / div;
-+	rate *= mul;
++	ctrl = PM_BF(PLLOPT, 4);
++	base = clk->parent->get_rate(clk->parent);
 +
-+	return rate;
-+}
++	/* PLL input frequency must be between 6 MHz and 32 MHz. */
++	div_min = DIV_ROUND_UP(base, 32000000UL);
++	div_max = base / 6000000UL;
 +
-+static unsigned long pll0_get_rate(struct clk *clk)
-+{
-+	u32 control;
++	if (div_max < div_min)
++		return -EINVAL;
 +
-+	control = pm_readl(PLL0);
++	for (div = div_min; div <= div_max; div++) {
++		pll_in = (base + div / 2) / div;
++		mul = (rate + pll_in / 2) / pll_in;
 +
-+	return pll_get_rate(clk, control);
-+}
++		if (mul == 0)
++			continue;
 +
-+static unsigned long pll1_get_rate(struct clk *clk)
-+{
-+	u32 control;
++		actual = pll_in * mul;
++		rate_error = abs(actual - rate);
 +
-+	control = pm_readl(PLL1);
++		if (rate_error < rate_error_prev) {
++			mul_best_fit = mul;
++			div_best_fit = div;
++			rate_error_prev = rate_error;
++		}
 +
-+	return pll_get_rate(clk, control);
-+}
++		if (rate_error == 0)
++			break;
++	}
 +
-+/*
-+ * The AT32AP7000 has five primary clock sources: One 32kHz
-+ * oscillator, two crystal oscillators and two PLLs.
-+ */
-+static struct clk osc32k = {
-+	.name		= "osc32k",
-+	.get_rate	= osc_get_rate,
-+	.users		= 1,
-+	.index		= 0,
-+};
-+static struct clk osc0 = {
-+	.name		= "osc0",
-+	.get_rate	= osc_get_rate,
-+	.users		= 1,
-+	.index		= 1,
-+};
-+static struct clk osc1 = {
-+	.name		= "osc1",
-+	.get_rate	= osc_get_rate,
-+	.index		= 2,
-+};
-+static struct clk pll0 = {
-+	.name		= "pll0",
-+	.get_rate	= pll0_get_rate,
-+	.parent		= &osc0,
-+};
-+static struct clk pll1 = {
-+	.name		= "pll1",
-+	.get_rate	= pll1_get_rate,
-+	.parent		= &osc0,
-+};
++	if (div_best_fit == 0)
++		return -EINVAL;
 +
-+/*
-+ * The main clock can be either osc0 or pll0.  The boot loader may
-+ * have chosen one for us, so we don't really know which one until we
-+ * have a look at the SM.
-+ */
-+static struct clk *main_clock;
++	ctrl |= PM_BF(PLLMUL, mul_best_fit - 1);
++	ctrl |= PM_BF(PLLDIV, div_best_fit - 1);
++	ctrl |= PM_BF(PLLCOUNT, 16);
 +
-+/*
-+ * Synchronous clocks are generated from the main clock. The clocks
-+ * must satisfy the constraint
-+ *   fCPU >= fHSB >= fPB
-+ * i.e. each clock must not be faster than its parent.
-+ */
-+static unsigned long bus_clk_get_rate(struct clk *clk, unsigned int shift)
-+{
-+	return main_clock->get_rate(main_clock) >> shift;
-+};
++	if (clk->parent == &osc1)
++		ctrl |= PM_BIT(PLLOSC);
 +
-+static void cpu_clk_mode(struct clk *clk, int enabled)
-+{
-+	unsigned long flags;
-+	u32 mask;
++	*pll_ctrl = ctrl;
 +
-+	spin_lock_irqsave(&pm_lock, flags);
-+	mask = pm_readl(CPU_MASK);
-+	if (enabled)
-+		mask |= 1 << clk->index;
-+	else
-+		mask &= ~(1 << clk->index);
-+	pm_writel(CPU_MASK, mask);
-+	spin_unlock_irqrestore(&pm_lock, flags);
++	return actual;
 +}
 +
-+static unsigned long cpu_clk_get_rate(struct clk *clk)
+ static unsigned long pll0_get_rate(struct clk *clk)
+ {
+ 	u32 control;
+@@ -129,6 +190,41 @@
+ 	return pll_get_rate(clk, control);
+ }
+ 
++static void pll1_mode(struct clk *clk, int enabled)
 +{
-+	unsigned long cksel, shift = 0;
-+
-+	cksel = pm_readl(CKSEL);
-+	if (cksel & PM_BIT(CPUDIV))
-+		shift = PM_BFEXT(CPUSEL, cksel) + 1;
++	unsigned long timeout;
++	u32 status;
++	u32 ctrl;
 +
-+	return bus_clk_get_rate(clk, shift);
-+}
++	ctrl = pm_readl(PLL1);
 +
-+static long cpu_clk_set_rate(struct clk *clk, unsigned long rate, int apply)
-+{
-+	u32 control;
-+	unsigned long parent_rate, child_div, actual_rate, div;
++	if (enabled) {
++		if (!PM_BFEXT(PLLMUL, ctrl) && !PM_BFEXT(PLLDIV, ctrl)) {
++			pr_debug("clk %s: failed to enable, rate not set\n",
++					clk->name);
++			return;
++		}
 +
-+	parent_rate = clk->parent->get_rate(clk->parent);
-+	control = pm_readl(CKSEL);
++		ctrl |= PM_BIT(PLLEN);
++		pm_writel(PLL1, ctrl);
 +
-+	if (control & PM_BIT(HSBDIV))
-+		child_div = 1 << (PM_BFEXT(HSBSEL, control) + 1);
-+	else
-+		child_div = 1;
++		/* Wait for PLL lock. */
++		for (timeout = 10000; timeout; timeout--) {
++			status = pm_readl(ISR);
++			if (status & PM_BIT(LOCK1))
++				break;
++			udelay(10);
++		}
 +
-+	if (rate > 3 * (parent_rate / 4) || child_div == 1) {
-+		actual_rate = parent_rate;
-+		control &= ~PM_BIT(CPUDIV);
++		if (!(status & PM_BIT(LOCK1)))
++			printk(KERN_ERR "clk %s: timeout waiting for lock\n",
++					clk->name);
 +	} else {
-+		unsigned int cpusel;
-+		div = (parent_rate + rate / 2) / rate;
-+		if (div > child_div)
-+			div = child_div;
-+		cpusel = (div > 1) ? (fls(div) - 2) : 0;
-+		control = PM_BIT(CPUDIV) | PM_BFINS(CPUSEL, cpusel, control);
-+		actual_rate = parent_rate / (1 << (cpusel + 1));
++		ctrl &= ~PM_BIT(PLLEN);
++		pm_writel(PLL1, ctrl);
 +	}
-+
-+	pr_debug("clk %s: new rate %lu (actual rate %lu)\n",
-+			clk->name, rate, actual_rate);
-+
-+	if (apply)
-+		pm_writel(CKSEL, control);
-+
-+	return actual_rate;
-+}
-+
-+static void hsb_clk_mode(struct clk *clk, int enabled)
-+{
-+	unsigned long flags;
-+	u32 mask;
-+
-+	spin_lock_irqsave(&pm_lock, flags);
-+	mask = pm_readl(HSB_MASK);
-+	if (enabled)
-+		mask |= 1 << clk->index;
-+	else
-+		mask &= ~(1 << clk->index);
-+	pm_writel(HSB_MASK, mask);
-+	spin_unlock_irqrestore(&pm_lock, flags);
-+}
-+
-+static unsigned long hsb_clk_get_rate(struct clk *clk)
-+{
-+	unsigned long cksel, shift = 0;
-+
-+	cksel = pm_readl(CKSEL);
-+	if (cksel & PM_BIT(HSBDIV))
-+		shift = PM_BFEXT(HSBSEL, cksel) + 1;
-+
-+	return bus_clk_get_rate(clk, shift);
-+}
-+
-+static void pba_clk_mode(struct clk *clk, int enabled)
-+{
-+	unsigned long flags;
-+	u32 mask;
-+
-+	spin_lock_irqsave(&pm_lock, flags);
-+	mask = pm_readl(PBA_MASK);
-+	if (enabled)
-+		mask |= 1 << clk->index;
-+	else
-+		mask &= ~(1 << clk->index);
-+	pm_writel(PBA_MASK, mask);
-+	spin_unlock_irqrestore(&pm_lock, flags);
-+}
-+
-+static unsigned long pba_clk_get_rate(struct clk *clk)
-+{
-+	unsigned long cksel, shift = 0;
-+
-+	cksel = pm_readl(CKSEL);
-+	if (cksel & PM_BIT(PBADIV))
-+		shift = PM_BFEXT(PBASEL, cksel) + 1;
-+
-+	return bus_clk_get_rate(clk, shift);
-+}
-+
-+static void pbb_clk_mode(struct clk *clk, int enabled)
-+{
-+	unsigned long flags;
-+	u32 mask;
-+
-+	spin_lock_irqsave(&pm_lock, flags);
-+	mask = pm_readl(PBB_MASK);
-+	if (enabled)
-+		mask |= 1 << clk->index;
-+	else
-+		mask &= ~(1 << clk->index);
-+	pm_writel(PBB_MASK, mask);
-+	spin_unlock_irqrestore(&pm_lock, flags);
-+}
-+
-+static unsigned long pbb_clk_get_rate(struct clk *clk)
-+{
-+	unsigned long cksel, shift = 0;
-+
-+	cksel = pm_readl(CKSEL);
-+	if (cksel & PM_BIT(PBBDIV))
-+		shift = PM_BFEXT(PBBSEL, cksel) + 1;
-+
-+	return bus_clk_get_rate(clk, shift);
-+}
-+
-+static struct clk cpu_clk = {
-+	.name		= "cpu",
-+	.get_rate	= cpu_clk_get_rate,
-+	.set_rate	= cpu_clk_set_rate,
-+	.users		= 1,
-+};
-+static struct clk hsb_clk = {
-+	.name		= "hsb",
-+	.parent		= &cpu_clk,
-+	.get_rate	= hsb_clk_get_rate,
-+};
-+static struct clk pba_clk = {
-+	.name		= "pba",
-+	.parent		= &hsb_clk,
-+	.mode		= hsb_clk_mode,
-+	.get_rate	= pba_clk_get_rate,
-+	.index		= 1,
-+};
-+static struct clk pbb_clk = {
-+	.name		= "pbb",
-+	.parent		= &hsb_clk,
-+	.mode		= hsb_clk_mode,
-+	.get_rate	= pbb_clk_get_rate,
-+	.users		= 1,
-+	.index		= 2,
-+};
-+
-+/* --------------------------------------------------------------------
-+ *  Generic Clock operations
-+ * -------------------------------------------------------------------- */
-+
-+static void genclk_mode(struct clk *clk, int enabled)
-+{
-+	u32 control;
-+
-+	control = pm_readl(GCCTRL(clk->index));
-+	if (enabled)
-+		control |= PM_BIT(CEN);
-+	else
-+		control &= ~PM_BIT(CEN);
-+	pm_writel(GCCTRL(clk->index), control);
 +}
 +
-+static unsigned long genclk_get_rate(struct clk *clk)
-+{
-+	u32 control;
-+	unsigned long div = 1;
-+
-+	control = pm_readl(GCCTRL(clk->index));
-+	if (control & PM_BIT(DIVEN))
-+		div = 2 * (PM_BFEXT(DIV, control) + 1);
-+
-+	return clk->parent->get_rate(clk->parent) / div;
-+}
-+
-+static long genclk_set_rate(struct clk *clk, unsigned long rate, int apply)
+ static unsigned long pll1_get_rate(struct clk *clk)
+ {
+ 	u32 control;
+@@ -138,6 +234,49 @@
+ 	return pll_get_rate(clk, control);
+ }
+ 
++static long pll1_set_rate(struct clk *clk, unsigned long rate, int apply)
 +{
-+	u32 control;
-+	unsigned long parent_rate, actual_rate, div;
++	u32 ctrl = 0;
++	unsigned long actual_rate;
 +
-+	parent_rate = clk->parent->get_rate(clk->parent);
-+	control = pm_readl(GCCTRL(clk->index));
++	actual_rate = pll_set_rate(clk, rate, &ctrl);
 +
-+	if (rate > 3 * parent_rate / 4) {
-+		actual_rate = parent_rate;
-+		control &= ~PM_BIT(DIVEN);
-+	} else {
-+		div = (parent_rate + rate) / (2 * rate) - 1;
-+		control = PM_BFINS(DIV, div, control) | PM_BIT(DIVEN);
-+		actual_rate = parent_rate / (2 * (div + 1));
++	if (apply) {
++		if (actual_rate != rate)
++			return -EINVAL;
++		if (clk->users > 0)
++			return -EBUSY;
++		pr_debug(KERN_INFO "clk %s: new rate %lu (actual rate %lu)\n",
++				clk->name, rate, actual_rate);
++		pm_writel(PLL1, ctrl);
 +	}
 +
-+	dev_dbg(clk->dev, "clk %s: new rate %lu (actual rate %lu)\n",
-+		clk->name, rate, actual_rate);
-+
-+	if (apply)
-+		pm_writel(GCCTRL(clk->index), control);
-+
 +	return actual_rate;
 +}
 +
-+int genclk_set_parent(struct clk *clk, struct clk *parent)
++static int pll1_set_parent(struct clk *clk, struct clk *parent)
 +{
-+	u32 control;
++	u32 ctrl;
 +
-+	dev_dbg(clk->dev, "clk %s: new parent %s (was %s)\n",
-+		clk->name, parent->name, clk->parent->name);
++	if (clk->users > 0)
++		return -EBUSY;
 +
-+	control = pm_readl(GCCTRL(clk->index));
++	ctrl = pm_readl(PLL1);
++	WARN_ON(ctrl & PM_BIT(PLLEN));
 +
-+	if (parent == &osc1 || parent == &pll1)
-+		control |= PM_BIT(OSCSEL);
-+	else if (parent == &osc0 || parent == &pll0)
-+		control &= ~PM_BIT(OSCSEL);
++	if (parent == &osc0)
++		ctrl &= ~PM_BIT(PLLOSC);
++	else if (parent == &osc1)
++		ctrl |= PM_BIT(PLLOSC);
 +	else
 +		return -EINVAL;
 +
-+	if (parent == &pll0 || parent == &pll1)
-+		control |= PM_BIT(PLLSEL);
-+	else
-+		control &= ~PM_BIT(PLLSEL);
-+
-+	pm_writel(GCCTRL(clk->index), control);
++	pm_writel(PLL1, ctrl);
 +	clk->parent = parent;
 +
 +	return 0;
 +}
 +
-+static void __init genclk_init_parent(struct clk *clk)
-+{
-+	u32 control;
-+	struct clk *parent;
-+
-+	BUG_ON(clk->index > 7);
-+
-+	control = pm_readl(GCCTRL(clk->index));
-+	if (control & PM_BIT(OSCSEL))
-+		parent = (control & PM_BIT(PLLSEL)) ? &pll1 : &osc1;
-+	else
-+		parent = (control & PM_BIT(PLLSEL)) ? &pll0 : &osc0;
-+
-+	clk->parent = parent;
-+}
-+
-+/* --------------------------------------------------------------------
-+ *  System peripherals
-+ * -------------------------------------------------------------------- */
-+static struct resource at32_pm0_resource[] = {
-+	{
-+		.start	= 0xfff00000,
-+		.end	= 0xfff0007f,
-+		.flags	= IORESOURCE_MEM,
-+	},
-+	IRQ(20),
-+};
-+
-+static struct resource at32ap700x_rtc0_resource[] = {
-+	{
-+		.start	= 0xfff00080,
-+		.end	= 0xfff000af,
-+		.flags	= IORESOURCE_MEM,
-+	},
-+	IRQ(21),
-+};
-+
-+static struct resource at32_wdt0_resource[] = {
-+	{
-+		.start	= 0xfff000b0,
-+		.end	= 0xfff000cf,
-+		.flags	= IORESOURCE_MEM,
-+	},
-+};
-+
-+static struct resource at32_eic0_resource[] = {
-+	{
-+		.start	= 0xfff00100,
-+		.end	= 0xfff0013f,
-+		.flags	= IORESOURCE_MEM,
-+	},
-+	IRQ(19),
-+};
-+
-+DEFINE_DEV(at32_pm, 0);
-+DEFINE_DEV(at32ap700x_rtc, 0);
-+DEFINE_DEV(at32_wdt, 0);
-+DEFINE_DEV(at32_eic, 0);
-+
-+/*
-+ * Peripheral clock for PM, RTC, WDT and EIC. PM will ensure that this
-+ * is always running.
-+ */
-+static struct clk at32_pm_pclk = {
-+	.name		= "pclk",
-+	.dev		= &at32_pm0_device.dev,
-+	.parent		= &pbb_clk,
-+	.mode		= pbb_clk_mode,
-+	.get_rate	= pbb_clk_get_rate,
-+	.users		= 1,
-+	.index		= 0,
-+};
-+
-+static struct resource intc0_resource[] = {
-+	PBMEM(0xfff00400),
-+};
-+struct platform_device at32_intc0_device = {
-+	.name		= "intc",
-+	.id		= 0,
-+	.resource	= intc0_resource,
-+	.num_resources	= ARRAY_SIZE(intc0_resource),
-+};
-+DEV_CLK(pclk, at32_intc0, pbb, 1);
-+
-+static struct clk ebi_clk = {
-+	.name		= "ebi",
-+	.parent		= &hsb_clk,
-+	.mode		= hsb_clk_mode,
-+	.get_rate	= hsb_clk_get_rate,
-+	.users		= 1,
-+};
-+static struct clk hramc_clk = {
-+	.name		= "hramc",
-+	.parent		= &hsb_clk,
-+	.mode		= hsb_clk_mode,
-+	.get_rate	= hsb_clk_get_rate,
-+	.users		= 1,
-+	.index		= 3,
-+};
-+
-+static struct resource smc0_resource[] = {
-+	PBMEM(0xfff03400),
-+};
-+DEFINE_DEV(smc, 0);
-+DEV_CLK(pclk, smc0, pbb, 13);
-+DEV_CLK(mck, smc0, hsb, 0);
-+
-+static struct platform_device pdc_device = {
-+	.name		= "pdc",
-+	.id		= 0,
-+};
-+DEV_CLK(hclk, pdc, hsb, 4);
-+DEV_CLK(pclk, pdc, pba, 16);
-+
-+static struct clk pico_clk = {
-+	.name		= "pico",
-+	.parent		= &cpu_clk,
-+	.mode		= cpu_clk_mode,
-+	.get_rate	= cpu_clk_get_rate,
-+	.users		= 1,
-+};
-+
-+static struct resource dmaca0_resource[] = {
-+	{
-+		.start	= 0xff200000,
-+		.end	= 0xff20ffff,
-+		.flags	= IORESOURCE_MEM,
-+	},
-+	IRQ(2),
-+};
-+DEFINE_DEV(dmaca, 0);
-+DEV_CLK(hclk, dmaca0, hsb, 10);
-+
-+/* --------------------------------------------------------------------
-+ * HMATRIX
-+ * -------------------------------------------------------------------- */
-+
-+static struct clk hmatrix_clk = {
-+	.name		= "hmatrix_clk",
+ /*
+  * The AT32AP7000 has five primary clock sources: One 32kHz
+  * oscillator, two crystal oscillators and two PLLs.
+@@ -166,7 +305,10 @@
+ };
+ static struct clk pll1 = {
+ 	.name		= "pll1",
++	.mode		= pll1_mode,
+ 	.get_rate	= pll1_get_rate,
++	.set_rate	= pll1_set_rate,
++	.set_parent	= pll1_set_parent,
+ 	.parent		= &osc0,
+ };
+ 
+@@ -534,6 +676,14 @@
+ 	.users		= 1,
+ 	.index		= 3,
+ };
++static struct clk sdramc_clk = {
++	.name		= "sdramc_clk",
 +	.parent		= &pbb_clk,
 +	.mode		= pbb_clk_mode,
 +	.get_rate	= pbb_clk_get_rate,
-+	.index		= 2,
 +	.users		= 1,
++	.index		= 14,
 +};
-+#define HMATRIX_BASE	((void __iomem *)0xfff00800)
-+
-+#define hmatrix_readl(reg)					\
-+	__raw_readl((HMATRIX_BASE) + HMATRIX_##reg)
-+#define hmatrix_writel(reg,value)				\
-+	__raw_writel((value), (HMATRIX_BASE) + HMATRIX_##reg)
-+
-+/*
-+ * Set bits in the HMATRIX Special Function Register (SFR) used by the
-+ * External Bus Interface (EBI). This can be used to enable special
-+ * features like CompactFlash support, NAND Flash support, etc. on
-+ * certain chipselects.
-+ */
-+static inline void set_ebi_sfr_bits(u32 mask)
-+{
-+	u32 sfr;
-+
-+	clk_enable(&hmatrix_clk);
-+	sfr = hmatrix_readl(SFR4);
-+	sfr |= mask;
-+	hmatrix_writel(SFR4, sfr);
-+	clk_disable(&hmatrix_clk);
-+}
-+
-+/* --------------------------------------------------------------------
+ 
+ static struct resource smc0_resource[] = {
+ 	PBMEM(0xfff03400),
+@@ -605,19 +755,32 @@
+ }
+ 
+ /* --------------------------------------------------------------------
+- *  System Timer/Counter (TC)
 + *  Timer/Counter (TC)
-+ * -------------------------------------------------------------------- */
+  * -------------------------------------------------------------------- */
+-static struct resource at32_systc0_resource[] = {
 +
 +static struct resource at32_tcb0_resource[] = {
-+	PBMEM(0xfff00c00),
-+	IRQ(22),
-+};
+ 	PBMEM(0xfff00c00),
+ 	IRQ(22),
+ };
+-struct platform_device at32_systc0_device = {
+-	.name		= "systc",
 +static struct platform_device at32_tcb0_device = {
 +	.name		= "atmel_tcb",
-+	.id		= 0,
+ 	.id		= 0,
+-	.resource	= at32_systc0_resource,
+-	.num_resources	= ARRAY_SIZE(at32_systc0_resource),
 +	.resource	= at32_tcb0_resource,
 +	.num_resources	= ARRAY_SIZE(at32_tcb0_resource),
-+};
+ };
+-DEV_CLK(pclk, at32_systc0, pbb, 3);
 +DEV_CLK(t0_clk, at32_tcb0, pbb, 3);
 +
 +static struct resource at32_tcb1_resource[] = {
@@ -8999,68 +5607,23 @@
 +	.num_resources	= ARRAY_SIZE(at32_tcb1_resource),
 +};
 +DEV_CLK(t0_clk, at32_tcb1, pbb, 4);
-+
-+/* --------------------------------------------------------------------
-+ *  PIO
-+ * -------------------------------------------------------------------- */
-+
-+static struct resource pio0_resource[] = {
-+	PBMEM(0xffe02800),
-+	IRQ(13),
-+};
-+DEFINE_DEV(pio, 0);
-+DEV_CLK(mck, pio0, pba, 10);
-+
-+static struct resource pio1_resource[] = {
-+	PBMEM(0xffe02c00),
-+	IRQ(14),
-+};
-+DEFINE_DEV(pio, 1);
-+DEV_CLK(mck, pio1, pba, 11);
-+
-+static struct resource pio2_resource[] = {
-+	PBMEM(0xffe03000),
-+	IRQ(15),
-+};
-+DEFINE_DEV(pio, 2);
-+DEV_CLK(mck, pio2, pba, 12);
-+
-+static struct resource pio3_resource[] = {
-+	PBMEM(0xffe03400),
-+	IRQ(16),
-+};
-+DEFINE_DEV(pio, 3);
-+DEV_CLK(mck, pio3, pba, 13);
-+
-+static struct resource pio4_resource[] = {
-+	PBMEM(0xffe03800),
-+	IRQ(17),
-+};
-+DEFINE_DEV(pio, 4);
-+DEV_CLK(mck, pio4, pba, 14);
-+
-+void __init at32_add_system_devices(void)
-+{
-+	platform_device_register(&at32_pm0_device);
-+	platform_device_register(&at32_intc0_device);
-+	platform_device_register(&at32ap700x_rtc0_device);
-+	platform_device_register(&at32_wdt0_device);
-+	platform_device_register(&at32_eic0_device);
-+	platform_device_register(&smc0_device);
-+	platform_device_register(&pdc_device);
-+	platform_device_register(&dmaca0_device);
-+
+ 
+ /* --------------------------------------------------------------------
+  *  PIO
+@@ -669,7 +832,8 @@
+ 	platform_device_register(&pdc_device);
+ 	platform_device_register(&dmaca0_device);
+ 
+-	platform_device_register(&at32_systc0_device);
 +	platform_device_register(&at32_tcb0_device);
 +	platform_device_register(&at32_tcb1_device);
-+
-+	platform_device_register(&pio0_device);
-+	platform_device_register(&pio1_device);
-+	platform_device_register(&pio2_device);
-+	platform_device_register(&pio3_device);
-+	platform_device_register(&pio4_device);
-+}
-+
-+/* --------------------------------------------------------------------
+ 
+ 	platform_device_register(&pio0_device);
+ 	platform_device_register(&pio1_device);
+@@ -679,6 +843,81 @@
+ }
+ 
+ /* --------------------------------------------------------------------
 + *  PSIF
 + * -------------------------------------------------------------------- */
 +static struct resource atmel_psif0_resource[] __initdata = {
@@ -9136,391 +5699,62 @@
 +}
 +
 +/* --------------------------------------------------------------------
-+ *  USART
-+ * -------------------------------------------------------------------- */
-+
-+static struct atmel_uart_data atmel_usart0_data = {
-+	.use_dma_tx	= 1,
-+	.use_dma_rx	= 1,
-+};
-+static struct resource atmel_usart0_resource[] = {
-+	PBMEM(0xffe00c00),
-+	IRQ(6),
-+};
-+DEFINE_DEV_DATA(atmel_usart, 0);
-+DEV_CLK(usart, atmel_usart0, pba, 3);
-+
-+static struct atmel_uart_data atmel_usart1_data = {
-+	.use_dma_tx	= 1,
-+	.use_dma_rx	= 1,
-+};
-+static struct resource atmel_usart1_resource[] = {
-+	PBMEM(0xffe01000),
-+	IRQ(7),
-+};
-+DEFINE_DEV_DATA(atmel_usart, 1);
-+DEV_CLK(usart, atmel_usart1, pba, 4);
-+
-+static struct atmel_uart_data atmel_usart2_data = {
-+	.use_dma_tx	= 1,
-+	.use_dma_rx	= 1,
-+};
-+static struct resource atmel_usart2_resource[] = {
-+	PBMEM(0xffe01400),
-+	IRQ(8),
-+};
-+DEFINE_DEV_DATA(atmel_usart, 2);
-+DEV_CLK(usart, atmel_usart2, pba, 5);
-+
-+static struct atmel_uart_data atmel_usart3_data = {
-+	.use_dma_tx	= 1,
-+	.use_dma_rx	= 1,
-+};
-+static struct resource atmel_usart3_resource[] = {
-+	PBMEM(0xffe01800),
-+	IRQ(9),
-+};
-+DEFINE_DEV_DATA(atmel_usart, 3);
-+DEV_CLK(usart, atmel_usart3, pba, 6);
-+
-+static inline void configure_usart0_pins(void)
-+{
-+	select_peripheral(PA(8),  PERIPH_B, 0);	/* RXD	*/
-+	select_peripheral(PA(9),  PERIPH_B, 0);	/* TXD	*/
-+}
-+
-+static inline void configure_usart1_pins(void)
-+{
-+	select_peripheral(PA(17), PERIPH_A, 0);	/* RXD	*/
-+	select_peripheral(PA(18), PERIPH_A, 0);	/* TXD	*/
-+}
-+
-+static inline void configure_usart2_pins(void)
-+{
-+	select_peripheral(PB(26), PERIPH_B, 0);	/* RXD	*/
-+	select_peripheral(PB(27), PERIPH_B, 0);	/* TXD	*/
-+}
-+
-+static inline void configure_usart3_pins(void)
-+{
-+	select_peripheral(PB(18), PERIPH_B, 0);	/* RXD	*/
-+	select_peripheral(PB(17), PERIPH_B, 0);	/* TXD	*/
-+}
-+
-+static struct platform_device *__initdata at32_usarts[4];
-+
-+void __init at32_map_usart(unsigned int hw_id, unsigned int line)
-+{
-+	struct platform_device *pdev;
-+
-+	switch (hw_id) {
-+	case 0:
-+		pdev = &atmel_usart0_device;
-+		configure_usart0_pins();
-+		break;
-+	case 1:
-+		pdev = &atmel_usart1_device;
-+		configure_usart1_pins();
-+		break;
-+	case 2:
-+		pdev = &atmel_usart2_device;
-+		configure_usart2_pins();
-+		break;
-+	case 3:
-+		pdev = &atmel_usart3_device;
-+		configure_usart3_pins();
-+		break;
-+	default:
-+		return;
-+	}
-+
-+	if (PXSEG(pdev->resource[0].start) == P4SEG) {
-+		/* Addresses in the P4 segment are permanently mapped 1:1 */
-+		struct atmel_uart_data *data = pdev->dev.platform_data;
-+		data->regs = (void __iomem *)pdev->resource[0].start;
-+	}
-+
-+	pdev->id = line;
-+	at32_usarts[line] = pdev;
-+}
-+
-+struct platform_device *__init at32_add_device_usart(unsigned int id)
-+{
-+	platform_device_register(at32_usarts[id]);
-+	return at32_usarts[id];
-+}
-+
-+struct platform_device *atmel_default_console_device;
-+
-+void __init at32_setup_serial_console(unsigned int usart_id)
-+{
-+	atmel_default_console_device = at32_usarts[usart_id];
-+}
-+
-+/* --------------------------------------------------------------------
-+ *  Ethernet
-+ * -------------------------------------------------------------------- */
-+
-+#ifdef CONFIG_CPU_AT32AP7000
-+static struct eth_platform_data macb0_data;
-+static struct resource macb0_resource[] = {
-+	PBMEM(0xfff01800),
-+	IRQ(25),
-+};
-+DEFINE_DEV_DATA(macb, 0);
-+DEV_CLK(hclk, macb0, hsb, 8);
-+DEV_CLK(pclk, macb0, pbb, 6);
-+
-+static struct eth_platform_data macb1_data;
-+static struct resource macb1_resource[] = {
-+	PBMEM(0xfff01c00),
-+	IRQ(26),
-+};
-+DEFINE_DEV_DATA(macb, 1);
-+DEV_CLK(hclk, macb1, hsb, 9);
-+DEV_CLK(pclk, macb1, pbb, 7);
-+
-+struct platform_device *__init
-+at32_add_device_eth(unsigned int id, struct eth_platform_data *data)
-+{
-+	struct platform_device *pdev;
-+
-+	switch (id) {
-+	case 0:
-+		pdev = &macb0_device;
-+
-+		select_peripheral(PC(3),  PERIPH_A, 0);	/* TXD0	*/
-+		select_peripheral(PC(4),  PERIPH_A, 0);	/* TXD1	*/
-+		select_peripheral(PC(7),  PERIPH_A, 0);	/* TXEN	*/
-+		select_peripheral(PC(8),  PERIPH_A, 0);	/* TXCK */
-+		select_peripheral(PC(9),  PERIPH_A, 0);	/* RXD0	*/
-+		select_peripheral(PC(10), PERIPH_A, 0);	/* RXD1	*/
-+		select_peripheral(PC(13), PERIPH_A, 0);	/* RXER	*/
-+		select_peripheral(PC(15), PERIPH_A, 0);	/* RXDV	*/
-+		select_peripheral(PC(16), PERIPH_A, 0);	/* MDC	*/
-+		select_peripheral(PC(17), PERIPH_A, 0);	/* MDIO	*/
-+
-+		if (!data->is_rmii) {
-+			select_peripheral(PC(0),  PERIPH_A, 0);	/* COL	*/
-+			select_peripheral(PC(1),  PERIPH_A, 0);	/* CRS	*/
-+			select_peripheral(PC(2),  PERIPH_A, 0);	/* TXER	*/
-+			select_peripheral(PC(5),  PERIPH_A, 0);	/* TXD2	*/
-+			select_peripheral(PC(6),  PERIPH_A, 0);	/* TXD3 */
-+			select_peripheral(PC(11), PERIPH_A, 0);	/* RXD2	*/
-+			select_peripheral(PC(12), PERIPH_A, 0);	/* RXD3	*/
-+			select_peripheral(PC(14), PERIPH_A, 0);	/* RXCK	*/
-+			select_peripheral(PC(18), PERIPH_A, 0);	/* SPD	*/
-+		}
-+		break;
-+
-+	case 1:
-+		pdev = &macb1_device;
-+
-+		select_peripheral(PD(13), PERIPH_B, 0);		/* TXD0	*/
-+		select_peripheral(PD(14), PERIPH_B, 0);		/* TXD1	*/
-+		select_peripheral(PD(11), PERIPH_B, 0);		/* TXEN	*/
-+		select_peripheral(PD(12), PERIPH_B, 0);		/* TXCK */
-+		select_peripheral(PD(10), PERIPH_B, 0);		/* RXD0	*/
-+		select_peripheral(PD(6),  PERIPH_B, 0);		/* RXD1	*/
-+		select_peripheral(PD(5),  PERIPH_B, 0);		/* RXER	*/
-+		select_peripheral(PD(4),  PERIPH_B, 0);		/* RXDV	*/
-+		select_peripheral(PD(3),  PERIPH_B, 0);		/* MDC	*/
-+		select_peripheral(PD(2),  PERIPH_B, 0);		/* MDIO	*/
-+
-+		if (!data->is_rmii) {
-+			select_peripheral(PC(19), PERIPH_B, 0);	/* COL	*/
-+			select_peripheral(PC(23), PERIPH_B, 0);	/* CRS	*/
-+			select_peripheral(PC(26), PERIPH_B, 0);	/* TXER	*/
-+			select_peripheral(PC(27), PERIPH_B, 0);	/* TXD2	*/
-+			select_peripheral(PC(28), PERIPH_B, 0);	/* TXD3 */
-+			select_peripheral(PC(29), PERIPH_B, 0);	/* RXD2	*/
-+			select_peripheral(PC(30), PERIPH_B, 0);	/* RXD3	*/
-+			select_peripheral(PC(24), PERIPH_B, 0);	/* RXCK	*/
-+			select_peripheral(PD(15), PERIPH_B, 0);	/* SPD	*/
-+		}
-+		break;
-+
-+	default:
-+		return NULL;
-+	}
-+
-+	memcpy(pdev->dev.platform_data, data, sizeof(struct eth_platform_data));
-+	platform_device_register(pdev);
-+
-+	return pdev;
-+}
-+#endif
-+
-+/* --------------------------------------------------------------------
-+ *  SPI
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_spi0_resource[] = {
-+	PBMEM(0xffe00000),
-+	IRQ(3),
-+};
-+DEFINE_DEV(atmel_spi, 0);
-+DEV_CLK(spi_clk, atmel_spi0, pba, 0);
-+
-+static struct resource atmel_spi1_resource[] = {
-+	PBMEM(0xffe00400),
-+	IRQ(4),
-+};
-+DEFINE_DEV(atmel_spi, 1);
-+DEV_CLK(spi_clk, atmel_spi1, pba, 1);
-+
-+static void __init
-+at32_spi_setup_slaves(unsigned int bus_num, struct spi_board_info *b,
-+		      unsigned int n, const u8 *pins)
-+{
-+	unsigned int pin, mode;
-+
-+	for (; n; n--, b++) {
-+		b->bus_num = bus_num;
-+		if (b->chip_select >= 4)
-+			continue;
-+		pin = (unsigned)b->controller_data;
-+		if (!pin) {
-+			pin = pins[b->chip_select];
-+			b->controller_data = (void *)pin;
-+		}
-+		mode = AT32_GPIOF_OUTPUT;
-+		if (!(b->mode & SPI_CS_HIGH))
-+			mode |= AT32_GPIOF_HIGH;
-+		at32_select_gpio(pin, mode);
-+	}
-+}
-+
-+struct platform_device *__init
-+at32_add_device_spi(unsigned int id, struct spi_board_info *b, unsigned int n)
-+{
-+	/*
-+	 * Manage the chipselects as GPIOs, normally using the same pins
-+	 * the SPI controller expects; but boards can use other pins.
-+	 */
-+	static u8 __initdata spi0_pins[] =
-+		{ GPIO_PIN_PA(3), GPIO_PIN_PA(4),
-+		  GPIO_PIN_PA(5), GPIO_PIN_PA(20), };
-+	static u8 __initdata spi1_pins[] =
-+		{ GPIO_PIN_PB(2), GPIO_PIN_PB(3),
-+		  GPIO_PIN_PB(4), GPIO_PIN_PA(27), };
-+	struct platform_device *pdev;
-+
-+	switch (id) {
-+	case 0:
-+		pdev = &atmel_spi0_device;
-+		select_peripheral(PA(0),  PERIPH_A, 0);	/* MISO	 */
-+		select_peripheral(PA(1),  PERIPH_A, 0);	/* MOSI	 */
-+		select_peripheral(PA(2),  PERIPH_A, 0);	/* SCK	 */
-+		at32_spi_setup_slaves(0, b, n, spi0_pins);
-+		break;
-+
-+	case 1:
-+		pdev = &atmel_spi1_device;
-+		select_peripheral(PB(0),  PERIPH_B, 0);	/* MISO  */
-+		select_peripheral(PB(1),  PERIPH_B, 0);	/* MOSI  */
-+		select_peripheral(PB(5),  PERIPH_B, 0);	/* SCK   */
-+		at32_spi_setup_slaves(1, b, n, spi1_pins);
-+		break;
-+
-+	default:
-+		return NULL;
-+	}
-+
-+	spi_register_board_info(b, n);
-+	platform_device_register(pdev);
-+	return pdev;
-+}
-+
-+/* --------------------------------------------------------------------
-+ *  TWI
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_twi0_resource[] __initdata = {
-+	PBMEM(0xffe00800),
-+	IRQ(5),
-+};
-+static struct clk atmel_twi0_pclk = {
-+	.name		= "twi_pclk",
-+	.parent		= &pba_clk,
-+	.mode		= pba_clk_mode,
-+	.get_rate	= pba_clk_get_rate,
-+	.index		= 2,
-+};
-+
+  *  USART
+  * -------------------------------------------------------------------- */
+ 
+@@ -989,7 +1228,9 @@
+ 	.index		= 2,
+ };
+ 
+-struct platform_device *__init at32_add_device_twi(unsigned int id)
 +struct platform_device *__init at32_add_device_twi(unsigned int id,
 +						    struct i2c_board_info *b,
 +						    unsigned int n)
-+{
-+	struct platform_device *pdev;
-+
-+	if (id != 0)
-+		return NULL;
-+
-+	pdev = platform_device_alloc("atmel_twi", id);
-+	if (!pdev)
-+		return NULL;
-+
-+	if (platform_device_add_resources(pdev, atmel_twi0_resource,
-+				ARRAY_SIZE(atmel_twi0_resource)))
-+		goto err_add_resources;
-+
-+	select_peripheral(PA(6),  PERIPH_A, 0);	/* SDA	*/
-+	select_peripheral(PA(7),  PERIPH_A, 0);	/* SDL	*/
-+
-+	atmel_twi0_pclk.dev = &pdev->dev;
-+
+ {
+ 	struct platform_device *pdev;
+ 
+@@ -1009,6 +1250,9 @@
+ 
+ 	atmel_twi0_pclk.dev = &pdev->dev;
+ 
 +	if (b)
 +		i2c_register_board_info(id, b, n);
 +
-+	platform_device_add(pdev);
-+	return pdev;
-+
-+err_add_resources:
-+	platform_device_put(pdev);
-+	return NULL;
-+}
-+
-+/* --------------------------------------------------------------------
-+ * MMC
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_mci0_resource[] __initdata = {
-+	PBMEM(0xfff02400),
-+	IRQ(28),
-+};
-+static struct clk atmel_mci0_pclk = {
-+	.name		= "mci_clk",
-+	.parent		= &pbb_clk,
-+	.mode		= pbb_clk_mode,
-+	.get_rate	= pbb_clk_get_rate,
-+	.index		= 9,
-+};
-+
+ 	platform_device_add(pdev);
+ 	return pdev;
+ 
+@@ -1032,7 +1276,8 @@
+ 	.index		= 9,
+ };
+ 
+-struct platform_device *__init at32_add_device_mci(unsigned int id)
 +struct platform_device *__init
 +at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
-+{
-+	struct platform_device *pdev;
-+
-+	if (id != 0)
-+		return NULL;
-+
-+	pdev = platform_device_alloc("atmel_mci", id);
-+	if (!pdev)
+ {
+ 	struct platform_device *pdev;
+ 
+@@ -1041,11 +1286,15 @@
+ 
+ 	pdev = platform_device_alloc("atmel_mci", id);
+ 	if (!pdev)
+-		return NULL;
 +		goto fail;
-+
-+	if (platform_device_add_resources(pdev, atmel_mci0_resource,
-+				ARRAY_SIZE(atmel_mci0_resource)))
+ 
+ 	if (platform_device_add_resources(pdev, atmel_mci0_resource,
+ 				ARRAY_SIZE(atmel_mci0_resource)))
+-		goto err_add_resources;
 +		goto fail;
 +
 +	if (data && platform_device_add_data(pdev, data,
 +				sizeof(struct mci_platform_data)))
 +		goto fail;
-+
-+	select_peripheral(PA(10), PERIPH_A, 0);	/* CLK	 */
-+	select_peripheral(PA(11), PERIPH_A, 0);	/* CMD	 */
-+	select_peripheral(PA(12), PERIPH_A, 0);	/* DATA0 */
-+	select_peripheral(PA(13), PERIPH_A, 0);	/* DATA1 */
-+	select_peripheral(PA(14), PERIPH_A, 0);	/* DATA2 */
-+	select_peripheral(PA(15), PERIPH_A, 0);	/* DATA3 */
-+
+ 
+ 	select_peripheral(PA(10), PERIPH_A, 0);	/* CLK	 */
+ 	select_peripheral(PA(11), PERIPH_A, 0);	/* CMD	 */
+@@ -1054,12 +1303,19 @@
+ 	select_peripheral(PA(14), PERIPH_A, 0);	/* DATA2 */
+ 	select_peripheral(PA(15), PERIPH_A, 0);	/* DATA3 */
+ 
 +	if (data) {
 +		if (data->detect_pin != GPIO_PIN_NONE)
 +			at32_select_gpio(data->detect_pin, 0);
@@ -9528,303 +5762,139 @@
 +			at32_select_gpio(data->wp_pin, 0);
 +	}
 +
-+	atmel_mci0_pclk.dev = &pdev->dev;
-+
-+	platform_device_add(pdev);
-+	return pdev;
-+
+ 	atmel_mci0_pclk.dev = &pdev->dev;
+ 
+ 	platform_device_add(pdev);
+ 	return pdev;
+ 
+-err_add_resources:
 +fail:
-+	platform_device_put(pdev);
-+	return NULL;
-+}
-+
-+/* --------------------------------------------------------------------
-+ *  LCDC
-+ * -------------------------------------------------------------------- */
-+#if defined(CONFIG_CPU_AT32AP7000) || defined(CONFIG_CPU_AT32AP7002)
-+static struct atmel_lcdfb_info atmel_lcdfb0_data;
-+static struct resource atmel_lcdfb0_resource[] = {
-+	{
-+		.start		= 0xff000000,
-+		.end		= 0xff000fff,
-+		.flags		= IORESOURCE_MEM,
-+	},
-+	IRQ(1),
-+	{
-+		/* Placeholder for pre-allocated fb memory */
-+		.start		= 0x00000000,
-+		.end		= 0x00000000,
-+		.flags		= 0,
-+	},
-+};
-+DEFINE_DEV_DATA(atmel_lcdfb, 0);
-+DEV_CLK(hck1, atmel_lcdfb0, hsb, 7);
-+static struct clk atmel_lcdfb0_pixclk = {
-+	.name		= "lcdc_clk",
-+	.dev		= &atmel_lcdfb0_device.dev,
-+	.mode		= genclk_mode,
-+	.get_rate	= genclk_get_rate,
-+	.set_rate	= genclk_set_rate,
-+	.set_parent	= genclk_set_parent,
-+	.index		= 7,
-+};
-+
-+struct platform_device *__init
-+at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
-+		     unsigned long fbmem_start, unsigned long fbmem_len)
-+{
-+	struct platform_device *pdev;
-+	struct atmel_lcdfb_info *info;
-+	struct fb_monspecs *monspecs;
-+	struct fb_videomode *modedb;
-+	unsigned int modedb_size;
-+
-+	/*
-+	 * Do a deep copy of the fb data, monspecs and modedb. Make
-+	 * sure all allocations are done before setting up the
-+	 * portmux.
-+	 */
-+	monspecs = kmemdup(data->default_monspecs,
-+			   sizeof(struct fb_monspecs), GFP_KERNEL);
-+	if (!monspecs)
-+		return NULL;
-+
-+	modedb_size = sizeof(struct fb_videomode) * monspecs->modedb_len;
-+	modedb = kmemdup(monspecs->modedb, modedb_size, GFP_KERNEL);
-+	if (!modedb)
-+		goto err_dup_modedb;
-+	monspecs->modedb = modedb;
-+
-+	switch (id) {
-+	case 0:
-+		pdev = &atmel_lcdfb0_device;
-+		select_peripheral(PC(19), PERIPH_A, 0);	/* CC	  */
-+		select_peripheral(PC(20), PERIPH_A, 0);	/* HSYNC  */
-+		select_peripheral(PC(21), PERIPH_A, 0);	/* PCLK	  */
-+		select_peripheral(PC(22), PERIPH_A, 0);	/* VSYNC  */
-+		select_peripheral(PC(23), PERIPH_A, 0);	/* DVAL	  */
-+		select_peripheral(PC(24), PERIPH_A, 0);	/* MODE	  */
-+		select_peripheral(PC(25), PERIPH_A, 0);	/* PWR	  */
-+		select_peripheral(PC(26), PERIPH_A, 0);	/* DATA0  */
-+		select_peripheral(PC(27), PERIPH_A, 0);	/* DATA1  */
-+		select_peripheral(PC(28), PERIPH_A, 0);	/* DATA2  */
-+		select_peripheral(PC(29), PERIPH_A, 0);	/* DATA3  */
-+		select_peripheral(PC(30), PERIPH_A, 0);	/* DATA4  */
-+		select_peripheral(PC(31), PERIPH_A, 0);	/* DATA5  */
-+		select_peripheral(PD(0),  PERIPH_A, 0);	/* DATA6  */
-+		select_peripheral(PD(1),  PERIPH_A, 0);	/* DATA7  */
-+		select_peripheral(PD(2),  PERIPH_A, 0);	/* DATA8  */
-+		select_peripheral(PD(3),  PERIPH_A, 0);	/* DATA9  */
-+		select_peripheral(PD(4),  PERIPH_A, 0);	/* DATA10 */
-+		select_peripheral(PD(5),  PERIPH_A, 0);	/* DATA11 */
-+		select_peripheral(PD(6),  PERIPH_A, 0);	/* DATA12 */
-+		select_peripheral(PD(7),  PERIPH_A, 0);	/* DATA13 */
-+		select_peripheral(PD(8),  PERIPH_A, 0);	/* DATA14 */
-+		select_peripheral(PD(9),  PERIPH_A, 0);	/* DATA15 */
-+		select_peripheral(PD(10), PERIPH_A, 0);	/* DATA16 */
-+		select_peripheral(PD(11), PERIPH_A, 0);	/* DATA17 */
-+		select_peripheral(PD(12), PERIPH_A, 0);	/* DATA18 */
-+		select_peripheral(PD(13), PERIPH_A, 0);	/* DATA19 */
-+		select_peripheral(PD(14), PERIPH_A, 0);	/* DATA20 */
-+		select_peripheral(PD(15), PERIPH_A, 0);	/* DATA21 */
-+		select_peripheral(PD(16), PERIPH_A, 0);	/* DATA22 */
-+		select_peripheral(PD(17), PERIPH_A, 0);	/* DATA23 */
-+
-+		clk_set_parent(&atmel_lcdfb0_pixclk, &pll0);
-+		clk_set_rate(&atmel_lcdfb0_pixclk, clk_get_rate(&pll0));
-+		break;
-+
-+	default:
-+		goto err_invalid_id;
-+	}
-+
-+	if (fbmem_len) {
-+		pdev->resource[2].start = fbmem_start;
-+		pdev->resource[2].end = fbmem_start + fbmem_len - 1;
-+		pdev->resource[2].flags = IORESOURCE_MEM;
-+	}
-+
-+	info = pdev->dev.platform_data;
-+	memcpy(info, data, sizeof(struct atmel_lcdfb_info));
-+	info->default_monspecs = monspecs;
-+
-+	platform_device_register(pdev);
-+	return pdev;
-+
-+err_invalid_id:
-+	kfree(modedb);
-+err_dup_modedb:
-+	kfree(monspecs);
-+	return NULL;
-+}
-+#endif
-+
-+/* --------------------------------------------------------------------
-+ *  PWM
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_pwm0_resource[] __initdata = {
-+	PBMEM(0xfff01400),
-+	IRQ(24),
-+};
-+static struct clk atmel_pwm0_mck = {
-+	.name		= "mck",
-+	.parent		= &pbb_clk,
-+	.mode		= pbb_clk_mode,
-+	.get_rate	= pbb_clk_get_rate,
-+	.index		= 5,
-+};
-+
-+struct platform_device *__init at32_add_device_pwm(u32 mask)
-+{
-+	struct platform_device *pdev;
-+
-+	if (!mask)
-+		return NULL;
-+
-+	pdev = platform_device_alloc("atmel_pwm", 0);
-+	if (!pdev)
-+		return NULL;
-+
-+	if (platform_device_add_resources(pdev, atmel_pwm0_resource,
-+				ARRAY_SIZE(atmel_pwm0_resource)))
-+		goto out_free_pdev;
-+
-+	if (platform_device_add_data(pdev, &mask, sizeof(mask)))
-+		goto out_free_pdev;
-+
-+	if (mask & (1 << 0))
-+		select_peripheral(PA(28), PERIPH_A, 0);
-+	if (mask & (1 << 1))
-+		select_peripheral(PA(29), PERIPH_A, 0);
-+	if (mask & (1 << 2))
-+		select_peripheral(PA(21), PERIPH_B, 0);
-+	if (mask & (1 << 3))
-+		select_peripheral(PA(22), PERIPH_B, 0);
-+
-+	atmel_pwm0_mck.dev = &pdev->dev;
-+
-+	platform_device_add(pdev);
-+
-+	return pdev;
-+
-+out_free_pdev:
-+	platform_device_put(pdev);
-+	return NULL;
-+}
-+
-+/* --------------------------------------------------------------------
-+ *  SSC
-+ * -------------------------------------------------------------------- */
-+static struct resource ssc0_resource[] = {
-+	PBMEM(0xffe01c00),
-+	IRQ(10),
-+};
-+DEFINE_DEV(ssc, 0);
-+DEV_CLK(pclk, ssc0, pba, 7);
-+
-+static struct resource ssc1_resource[] = {
-+	PBMEM(0xffe02000),
-+	IRQ(11),
-+};
-+DEFINE_DEV(ssc, 1);
-+DEV_CLK(pclk, ssc1, pba, 8);
-+
-+static struct resource ssc2_resource[] = {
-+	PBMEM(0xffe02400),
-+	IRQ(12),
-+};
-+DEFINE_DEV(ssc, 2);
-+DEV_CLK(pclk, ssc2, pba, 9);
-+
-+struct platform_device *__init
-+at32_add_device_ssc(unsigned int id, unsigned int flags)
-+{
-+	struct platform_device *pdev;
-+
-+	switch (id) {
-+	case 0:
-+		pdev = &ssc0_device;
-+		if (flags & ATMEL_SSC_RF)
-+			select_peripheral(PA(21), PERIPH_A, 0);	/* RF */
-+		if (flags & ATMEL_SSC_RK)
-+			select_peripheral(PA(22), PERIPH_A, 0);	/* RK */
-+		if (flags & ATMEL_SSC_TK)
-+			select_peripheral(PA(23), PERIPH_A, 0);	/* TK */
-+		if (flags & ATMEL_SSC_TF)
-+			select_peripheral(PA(24), PERIPH_A, 0);	/* TF */
-+		if (flags & ATMEL_SSC_TD)
-+			select_peripheral(PA(25), PERIPH_A, 0);	/* TD */
-+		if (flags & ATMEL_SSC_RD)
-+			select_peripheral(PA(26), PERIPH_A, 0);	/* RD */
-+		break;
-+	case 1:
-+		pdev = &ssc1_device;
-+		if (flags & ATMEL_SSC_RF)
-+			select_peripheral(PA(0), PERIPH_B, 0);	/* RF */
-+		if (flags & ATMEL_SSC_RK)
-+			select_peripheral(PA(1), PERIPH_B, 0);	/* RK */
-+		if (flags & ATMEL_SSC_TK)
-+			select_peripheral(PA(2), PERIPH_B, 0);	/* TK */
-+		if (flags & ATMEL_SSC_TF)
-+			select_peripheral(PA(3), PERIPH_B, 0);	/* TF */
-+		if (flags & ATMEL_SSC_TD)
-+			select_peripheral(PA(4), PERIPH_B, 0);	/* TD */
-+		if (flags & ATMEL_SSC_RD)
-+			select_peripheral(PA(5), PERIPH_B, 0);	/* RD */
-+		break;
-+	case 2:
-+		pdev = &ssc2_device;
-+		if (flags & ATMEL_SSC_TD)
-+			select_peripheral(PB(13), PERIPH_A, 0);	/* TD */
-+		if (flags & ATMEL_SSC_RD)
-+			select_peripheral(PB(14), PERIPH_A, 0);	/* RD */
-+		if (flags & ATMEL_SSC_TK)
-+			select_peripheral(PB(15), PERIPH_A, 0);	/* TK */
-+		if (flags & ATMEL_SSC_TF)
-+			select_peripheral(PB(16), PERIPH_A, 0);	/* TF */
-+		if (flags & ATMEL_SSC_RF)
-+			select_peripheral(PB(17), PERIPH_A, 0);	/* RF */
-+		if (flags & ATMEL_SSC_RK)
-+			select_peripheral(PB(18), PERIPH_A, 0);	/* RK */
-+		break;
-+	default:
-+		return NULL;
-+	}
-+
-+	platform_device_register(pdev);
-+	return pdev;
-+}
-+
-+/* --------------------------------------------------------------------
-+ *  USB Device Controller
-+ * -------------------------------------------------------------------- */
-+static struct resource usba0_resource[] __initdata = {
-+	{
-+		.start		= 0xff300000,
-+		.end		= 0xff3fffff,
-+		.flags		= IORESOURCE_MEM,
-+	}, {
-+		.start		= 0xfff03000,
-+		.end		= 0xfff033ff,
-+		.flags		= IORESOURCE_MEM,
-+	},
-+	IRQ(31),
-+};
-+static struct clk usba0_pclk = {
-+	.name		= "pclk",
-+	.parent		= &pbb_clk,
-+	.mode		= pbb_clk_mode,
-+	.get_rate	= pbb_clk_get_rate,
-+	.index		= 12,
-+};
-+static struct clk usba0_hclk = {
-+	.name		= "hclk",
-+	.parent		= &hsb_clk,
-+	.mode		= hsb_clk_mode,
-+	.get_rate	= hsb_clk_get_rate,
-+	.index		= 6,
-+};
+ 	platform_device_put(pdev);
+ 	return NULL;
+ }
+@@ -1097,7 +1353,8 @@
+ 
+ struct platform_device *__init
+ at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
+-		     unsigned long fbmem_start, unsigned long fbmem_len)
++		     unsigned long fbmem_start, unsigned long fbmem_len,
++		     unsigned int pin_config)
+ {
+ 	struct platform_device *pdev;
+ 	struct atmel_lcdfb_info *info;
+@@ -1124,37 +1381,77 @@
+ 	switch (id) {
+ 	case 0:
+ 		pdev = &atmel_lcdfb0_device;
+-		select_peripheral(PC(19), PERIPH_A, 0);	/* CC	  */
+-		select_peripheral(PC(20), PERIPH_A, 0);	/* HSYNC  */
+-		select_peripheral(PC(21), PERIPH_A, 0);	/* PCLK	  */
+-		select_peripheral(PC(22), PERIPH_A, 0);	/* VSYNC  */
+-		select_peripheral(PC(23), PERIPH_A, 0);	/* DVAL	  */
+-		select_peripheral(PC(24), PERIPH_A, 0);	/* MODE	  */
+-		select_peripheral(PC(25), PERIPH_A, 0);	/* PWR	  */
+-		select_peripheral(PC(26), PERIPH_A, 0);	/* DATA0  */
+-		select_peripheral(PC(27), PERIPH_A, 0);	/* DATA1  */
+-		select_peripheral(PC(28), PERIPH_A, 0);	/* DATA2  */
+-		select_peripheral(PC(29), PERIPH_A, 0);	/* DATA3  */
+-		select_peripheral(PC(30), PERIPH_A, 0);	/* DATA4  */
+-		select_peripheral(PC(31), PERIPH_A, 0);	/* DATA5  */
+-		select_peripheral(PD(0),  PERIPH_A, 0);	/* DATA6  */
+-		select_peripheral(PD(1),  PERIPH_A, 0);	/* DATA7  */
+-		select_peripheral(PD(2),  PERIPH_A, 0);	/* DATA8  */
+-		select_peripheral(PD(3),  PERIPH_A, 0);	/* DATA9  */
+-		select_peripheral(PD(4),  PERIPH_A, 0);	/* DATA10 */
+-		select_peripheral(PD(5),  PERIPH_A, 0);	/* DATA11 */
+-		select_peripheral(PD(6),  PERIPH_A, 0);	/* DATA12 */
+-		select_peripheral(PD(7),  PERIPH_A, 0);	/* DATA13 */
+-		select_peripheral(PD(8),  PERIPH_A, 0);	/* DATA14 */
+-		select_peripheral(PD(9),  PERIPH_A, 0);	/* DATA15 */
+-		select_peripheral(PD(10), PERIPH_A, 0);	/* DATA16 */
+-		select_peripheral(PD(11), PERIPH_A, 0);	/* DATA17 */
+-		select_peripheral(PD(12), PERIPH_A, 0);	/* DATA18 */
+-		select_peripheral(PD(13), PERIPH_A, 0);	/* DATA19 */
+-		select_peripheral(PD(14), PERIPH_A, 0);	/* DATA20 */
+-		select_peripheral(PD(15), PERIPH_A, 0);	/* DATA21 */
+-		select_peripheral(PD(16), PERIPH_A, 0);	/* DATA22 */
+-		select_peripheral(PD(17), PERIPH_A, 0);	/* DATA23 */
 +
++		switch (pin_config) {
++		case 0:
++			select_peripheral(PC(19), PERIPH_A, 0);	/* CC	  */
++			select_peripheral(PC(20), PERIPH_A, 0);	/* HSYNC  */
++			select_peripheral(PC(21), PERIPH_A, 0);	/* PCLK	  */
++			select_peripheral(PC(22), PERIPH_A, 0);	/* VSYNC  */
++			select_peripheral(PC(23), PERIPH_A, 0);	/* DVAL	  */
++			select_peripheral(PC(24), PERIPH_A, 0);	/* MODE	  */
++			select_peripheral(PC(25), PERIPH_A, 0);	/* PWR	  */
++			select_peripheral(PC(26), PERIPH_A, 0);	/* DATA0  */
++			select_peripheral(PC(27), PERIPH_A, 0);	/* DATA1  */
++			select_peripheral(PC(28), PERIPH_A, 0);	/* DATA2  */
++			select_peripheral(PC(29), PERIPH_A, 0);	/* DATA3  */
++			select_peripheral(PC(30), PERIPH_A, 0);	/* DATA4  */
++			select_peripheral(PC(31), PERIPH_A, 0);	/* DATA5  */
++			select_peripheral(PD(0),  PERIPH_A, 0);	/* DATA6  */
++			select_peripheral(PD(1),  PERIPH_A, 0);	/* DATA7  */
++			select_peripheral(PD(2),  PERIPH_A, 0);	/* DATA8  */
++			select_peripheral(PD(3),  PERIPH_A, 0);	/* DATA9  */
++			select_peripheral(PD(4),  PERIPH_A, 0);	/* DATA10 */
++			select_peripheral(PD(5),  PERIPH_A, 0);	/* DATA11 */
++			select_peripheral(PD(6),  PERIPH_A, 0);	/* DATA12 */
++			select_peripheral(PD(7),  PERIPH_A, 0);	/* DATA13 */
++			select_peripheral(PD(8),  PERIPH_A, 0);	/* DATA14 */
++			select_peripheral(PD(9),  PERIPH_A, 0);	/* DATA15 */
++			select_peripheral(PD(10), PERIPH_A, 0);	/* DATA16 */
++			select_peripheral(PD(11), PERIPH_A, 0);	/* DATA17 */
++			select_peripheral(PD(12), PERIPH_A, 0);	/* DATA18 */
++			select_peripheral(PD(13), PERIPH_A, 0);	/* DATA19 */
++			select_peripheral(PD(14), PERIPH_A, 0);	/* DATA20 */
++			select_peripheral(PD(15), PERIPH_A, 0);	/* DATA21 */
++			select_peripheral(PD(16), PERIPH_A, 0);	/* DATA22 */
++			select_peripheral(PD(17), PERIPH_A, 0);	/* DATA23 */
++			break;
++		case 1:
++			select_peripheral(PE(0),  PERIPH_B, 0);	/* CC	  */
++			select_peripheral(PC(20), PERIPH_A, 0);	/* HSYNC  */
++			select_peripheral(PC(21), PERIPH_A, 0);	/* PCLK	  */
++			select_peripheral(PC(22), PERIPH_A, 0);	/* VSYNC  */
++			select_peripheral(PE(1),  PERIPH_B, 0);	/* DVAL	  */
++			select_peripheral(PE(2),  PERIPH_B, 0);	/* MODE	  */
++			select_peripheral(PC(25), PERIPH_A, 0);	/* PWR	  */
++			select_peripheral(PE(3),  PERIPH_B, 0);	/* DATA0  */
++			select_peripheral(PE(4),  PERIPH_B, 0);	/* DATA1  */
++			select_peripheral(PE(5),  PERIPH_B, 0);	/* DATA2  */
++			select_peripheral(PE(6),  PERIPH_B, 0);	/* DATA3  */
++			select_peripheral(PE(7),  PERIPH_B, 0);	/* DATA4  */
++			select_peripheral(PC(31), PERIPH_A, 0);	/* DATA5  */
++			select_peripheral(PD(0),  PERIPH_A, 0);	/* DATA6  */
++			select_peripheral(PD(1),  PERIPH_A, 0);	/* DATA7  */
++			select_peripheral(PE(8),  PERIPH_B, 0);	/* DATA8  */
++			select_peripheral(PE(9),  PERIPH_B, 0);	/* DATA9  */
++			select_peripheral(PE(10), PERIPH_B, 0);	/* DATA10 */
++			select_peripheral(PE(11), PERIPH_B, 0);	/* DATA11 */
++			select_peripheral(PE(12), PERIPH_B, 0);	/* DATA12 */
++			select_peripheral(PD(7),  PERIPH_A, 0);	/* DATA13 */
++			select_peripheral(PD(8),  PERIPH_A, 0);	/* DATA14 */
++			select_peripheral(PD(9),  PERIPH_A, 0);	/* DATA15 */
++			select_peripheral(PE(13), PERIPH_B, 0);	/* DATA16 */
++			select_peripheral(PE(14), PERIPH_B, 0);	/* DATA17 */
++			select_peripheral(PE(15), PERIPH_B, 0);	/* DATA18 */
++			select_peripheral(PE(16), PERIPH_B, 0);	/* DATA19 */
++			select_peripheral(PE(17), PERIPH_B, 0);	/* DATA20 */
++			select_peripheral(PE(18), PERIPH_B, 0);	/* DATA21 */
++			select_peripheral(PD(16), PERIPH_A, 0);	/* DATA22 */
++			select_peripheral(PD(17), PERIPH_A, 0);	/* DATA23 */
++			break;
++		default:
++			goto err_invalid_id;
++		}
+ 
+ 		clk_set_parent(&atmel_lcdfb0_pixclk, &pll0);
+ 		clk_set_rate(&atmel_lcdfb0_pixclk, clk_get_rate(&pll0));
+@@ -1351,9 +1648,39 @@
+ 	.index		= 6,
+ };
+ 
 +#define EP(nam, idx, maxpkt, maxbk, dma, isoc)			\
 +	[idx] = {						\
 +		.name		= nam,				\
@@ -9847,9 +5917,9 @@
 +
 +#undef EP
 +
-+struct platform_device *__init
-+at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
-+{
+ struct platform_device *__init
+ at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
+ {
 +	/*
 +	 * pdata doesn't have room for any endpoints, so we need to
 +	 * append room for the ones we need right after it.
@@ -9858,24 +5928,24 @@
 +		struct usba_platform_data pdata;
 +		struct usba_ep_data ep[7];
 +	} usba_data;
-+	struct platform_device *pdev;
-+
-+	if (id != 0)
-+		return NULL;
-+
-+	pdev = platform_device_alloc("atmel_usba_udc", 0);
-+	if (!pdev)
-+		return NULL;
-+
-+	if (platform_device_add_resources(pdev, usba0_resource,
-+					  ARRAY_SIZE(usba0_resource)))
-+		goto out_free_pdev;
-+
+ 	struct platform_device *pdev;
+ 
+ 	if (id != 0)
+@@ -1367,13 +1694,20 @@
+ 					  ARRAY_SIZE(usba0_resource)))
+ 		goto out_free_pdev;
+ 
+-	if (data) {
+-		if (platform_device_add_data(pdev, data, sizeof(*data)))
+-			goto out_free_pdev;
 +	if (data)
 +		usba_data.pdata.vbus_pin = data->vbus_pin;
 +	else
 +		usba_data.pdata.vbus_pin = -EINVAL;
-+
+ 
+-		if (data->vbus_pin != GPIO_PIN_NONE)
+-			at32_select_gpio(data->vbus_pin, 0);
+-	}
 +	data = &usba_data.pdata;
 +	data->num_ep = ARRAY_SIZE(at32_usba_ep);
 +	memcpy(data->ep, at32_usba_ep, sizeof(at32_usba_ep));
@@ -9885,147 +5955,55 @@
 +
 +	if (data->vbus_pin >= 0)
 +		at32_select_gpio(data->vbus_pin, 0);
-+
-+	usba0_pclk.dev = &pdev->dev;
-+	usba0_hclk.dev = &pdev->dev;
-+
-+	platform_device_add(pdev);
-+
-+	return pdev;
-+
-+out_free_pdev:
-+	platform_device_put(pdev);
-+	return NULL;
-+}
-+
-+/* --------------------------------------------------------------------
-+ * IDE / CompactFlash
+ 
+ 	usba0_pclk.dev = &pdev->dev;
+ 	usba0_hclk.dev = &pdev->dev;
+@@ -1526,6 +1860,58 @@
+ #endif
+ 
+ /* --------------------------------------------------------------------
++ * NAND Flash / SmartMedia
 + * -------------------------------------------------------------------- */
-+#if defined(CONFIG_CPU_AT32AP7000) || defined(CONFIG_CPU_AT32AP7001)
-+static struct resource at32_smc_cs4_resource[] __initdata = {
++static struct resource smc_cs3_resource[] __initdata = {
 +	{
-+		.start	= 0x04000000,
-+		.end	= 0x07ffffff,
++		.start	= 0x0c000000,
++		.end	= 0x0fffffff,
 +		.flags	= IORESOURCE_MEM,
-+	},
-+	IRQ(~0UL), /* Magic IRQ will be overridden */
-+};
-+static struct resource at32_smc_cs5_resource[] __initdata = {
-+	{
-+		.start	= 0x20000000,
-+		.end	= 0x23ffffff,
++	}, {
++		.start	= 0xfff03c00,
++		.end	= 0xfff03fff,
 +		.flags	= IORESOURCE_MEM,
 +	},
-+	IRQ(~0UL), /* Magic IRQ will be overridden */
 +};
 +
-+static int __init at32_init_ide_or_cf(struct platform_device *pdev,
-+		unsigned int cs, unsigned int extint)
-+{
-+	static unsigned int extint_pin_map[4] __initdata = {
-+		GPIO_PIN_PB(25),
-+		GPIO_PIN_PB(26),
-+		GPIO_PIN_PB(27),
-+		GPIO_PIN_PB(28),
-+	};
-+	static bool common_pins_initialized __initdata = false;
-+	unsigned int extint_pin;
-+	int ret;
-+
-+	if (extint >= ARRAY_SIZE(extint_pin_map))
-+		return -EINVAL;
-+	extint_pin = extint_pin_map[extint];
-+
-+	switch (cs) {
-+	case 4:
-+		ret = platform_device_add_resources(pdev,
-+				at32_smc_cs4_resource,
-+				ARRAY_SIZE(at32_smc_cs4_resource));
-+		if (ret)
-+			return ret;
-+
-+		select_peripheral(PE(21), PERIPH_A, 0); /* NCS4   -> OE_N  */
-+		set_ebi_sfr_bits(HMATRIX_BIT(CS4A));
-+		break;
-+	case 5:
-+		ret = platform_device_add_resources(pdev,
-+				at32_smc_cs5_resource,
-+				ARRAY_SIZE(at32_smc_cs5_resource));
-+		if (ret)
-+			return ret;
-+
-+		select_peripheral(PE(22), PERIPH_A, 0); /* NCS5   -> OE_N  */
-+		set_ebi_sfr_bits(HMATRIX_BIT(CS5A));
-+		break;
-+	default:
-+		return -EINVAL;
-+	}
-+
-+	if (!common_pins_initialized) {
-+		select_peripheral(PE(19), PERIPH_A, 0);	/* CFCE1  -> CS0_N */
-+		select_peripheral(PE(20), PERIPH_A, 0);	/* CFCE2  -> CS1_N */
-+		select_peripheral(PE(23), PERIPH_A, 0); /* CFRNW  -> DIR   */
-+		select_peripheral(PE(24), PERIPH_A, 0); /* NWAIT  <- IORDY */
-+		common_pins_initialized = true;
-+	}
-+
-+	at32_select_periph(extint_pin, GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
-+
-+	pdev->resource[1].start = EIM_IRQ_BASE + extint;
-+	pdev->resource[1].end = pdev->resource[1].start;
-+
-+	return 0;
-+}
-+
 +struct platform_device *__init
-+at32_add_device_ide(unsigned int id, unsigned int extint,
-+		    struct ide_platform_data *data)
++at32_add_device_nand(unsigned int id, struct atmel_nand_data *data)
 +{
 +	struct platform_device *pdev;
 +
-+	pdev = platform_device_alloc("at32_ide", id);
-+	if (!pdev)
-+		goto fail;
-+
-+	if (platform_device_add_data(pdev, data,
-+				sizeof(struct ide_platform_data)))
-+		goto fail;
-+
-+	if (at32_init_ide_or_cf(pdev, data->cs, extint))
-+		goto fail;
-+
-+	platform_device_add(pdev);
-+	return pdev;
-+
-+fail:
-+	platform_device_put(pdev);
-+	return NULL;
-+}
-+
-+struct platform_device *__init
-+at32_add_device_cf(unsigned int id, unsigned int extint,
-+		    struct cf_platform_data *data)
-+{
-+	struct platform_device *pdev;
++	if (id != 0 || !data)
++		return NULL;
 +
-+	pdev = platform_device_alloc("at32_cf", id);
++	pdev = platform_device_alloc("atmel_nand", id);
 +	if (!pdev)
 +		goto fail;
 +
-+	if (platform_device_add_data(pdev, data,
-+				sizeof(struct cf_platform_data)))
++	if (platform_device_add_resources(pdev, smc_cs3_resource,
++				ARRAY_SIZE(smc_cs3_resource)))
 +		goto fail;
 +
-+	if (at32_init_ide_or_cf(pdev, data->cs, extint))
++	if (platform_device_add_data(pdev, data,
++				sizeof(struct atmel_nand_data)))
 +		goto fail;
 +
-+	if (data->detect_pin != GPIO_PIN_NONE)
-+		at32_select_gpio(data->detect_pin, AT32_GPIOF_DEGLITCH);
-+	if (data->reset_pin != GPIO_PIN_NONE)
-+		at32_select_gpio(data->reset_pin, 0);
-+	if (data->vcc_pin != GPIO_PIN_NONE)
-+		at32_select_gpio(data->vcc_pin, 0);
-+	/* READY is used as extint, so we can't select it as gpio */
++	set_ebi_sfr_bits(HMATRIX_BIT(CS3A));
++	if (data->enable_pin)
++		at32_select_gpio(data->enable_pin,
++				AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
++	if (data->rdy_pin)
++		at32_select_gpio(data->rdy_pin, 0);
++	if (data->det_pin)
++		at32_select_gpio(data->det_pin, 0);
 +
 +	platform_device_add(pdev);
 +	return pdev;
@@ -10034,218 +6012,55 @@
 +	platform_device_put(pdev);
 +	return NULL;
 +}
-+#endif
 +
 +/* --------------------------------------------------------------------
-+ * AC97C
-+ * -------------------------------------------------------------------- */
-+static struct resource atmel_ac97c0_resource[] __initdata = {
-+	PBMEM(0xfff02800),
-+	IRQ(29),
-+};
-+static struct clk atmel_ac97c0_pclk = {
-+	.name		= "pclk",
-+	.parent		= &pbb_clk,
-+	.mode		= pbb_clk_mode,
-+	.get_rate	= pbb_clk_get_rate,
-+	.index		= 10,
-+};
-+
-+struct platform_device *__init at32_add_device_ac97c(unsigned int id)
-+{
-+	struct platform_device *pdev;
-+
-+	if (id != 0)
-+		return NULL;
-+
-+	pdev = platform_device_alloc("atmel_ac97c", id);
-+	if (!pdev)
-+		return NULL;
-+
-+	if (platform_device_add_resources(pdev, atmel_ac97c0_resource,
-+				ARRAY_SIZE(atmel_ac97c0_resource)))
-+		goto err_add_resources;
-+
-+	select_peripheral(PB(20), PERIPH_B, 0);	/* SYNC	*/
-+	select_peripheral(PB(21), PERIPH_B, 0);	/* SDO	*/
-+	select_peripheral(PB(22), PERIPH_B, 0);	/* SDI	*/
-+	select_peripheral(PB(23), PERIPH_B, 0);	/* SCLK	*/
-+
-+	atmel_ac97c0_pclk.dev = &pdev->dev;
-+
-+	platform_device_add(pdev);
-+	return pdev;
-+
-+err_add_resources:
-+	platform_device_put(pdev);
-+	return NULL;
-+}
-+
-+/* --------------------------------------------------------------------
-+ * ABDAC
-+ * -------------------------------------------------------------------- */
-+static struct resource abdac0_resource[] __initdata = {
-+	PBMEM(0xfff02000),
-+	IRQ(27),
-+};
-+static struct clk abdac0_pclk = {
-+	.name		= "pclk",
-+	.parent		= &pbb_clk,
-+	.mode		= pbb_clk_mode,
-+	.get_rate	= pbb_clk_get_rate,
-+	.index		= 8,
-+};
-+static struct clk abdac0_sample_clk = {
-+	.name		= "sample_clk",
-+	.mode		= genclk_mode,
-+	.get_rate	= genclk_get_rate,
-+	.set_rate	= genclk_set_rate,
-+	.set_parent	= genclk_set_parent,
-+	.index		= 6,
-+};
-+
-+struct platform_device *__init at32_add_device_abdac(unsigned int id)
-+{
-+	struct platform_device *pdev;
-+
-+	if (id != 0)
-+		return NULL;
-+
-+	pdev = platform_device_alloc("abdac", id);
-+	if (!pdev)
-+		return NULL;
-+
-+	if (platform_device_add_resources(pdev, abdac0_resource,
-+				ARRAY_SIZE(abdac0_resource)))
-+		goto err_add_resources;
-+
-+	select_peripheral(PB(20), PERIPH_A, 0);	/* DATA1	*/
-+	select_peripheral(PB(21), PERIPH_A, 0);	/* DATA0	*/
-+	select_peripheral(PB(22), PERIPH_A, 0);	/* DATAN1	*/
-+	select_peripheral(PB(23), PERIPH_A, 0);	/* DATAN0	*/
-+
-+	abdac0_pclk.dev = &pdev->dev;
-+	abdac0_sample_clk.dev = &pdev->dev;
-+
-+	platform_device_add(pdev);
-+	return pdev;
-+
-+err_add_resources:
-+	platform_device_put(pdev);
-+	return NULL;
-+}
-+
-+/* --------------------------------------------------------------------
-+ *  GCLK
-+ * -------------------------------------------------------------------- */
-+static struct clk gclk0 = {
-+	.name		= "gclk0",
-+	.mode		= genclk_mode,
-+	.get_rate	= genclk_get_rate,
-+	.set_rate	= genclk_set_rate,
-+	.set_parent	= genclk_set_parent,
-+	.index		= 0,
-+};
-+static struct clk gclk1 = {
-+	.name		= "gclk1",
-+	.mode		= genclk_mode,
-+	.get_rate	= genclk_get_rate,
-+	.set_rate	= genclk_set_rate,
-+	.set_parent	= genclk_set_parent,
-+	.index		= 1,
-+};
-+static struct clk gclk2 = {
-+	.name		= "gclk2",
-+	.mode		= genclk_mode,
-+	.get_rate	= genclk_get_rate,
-+	.set_rate	= genclk_set_rate,
-+	.set_parent	= genclk_set_parent,
-+	.index		= 2,
-+};
-+static struct clk gclk3 = {
-+	.name		= "gclk3",
-+	.mode		= genclk_mode,
-+	.get_rate	= genclk_get_rate,
-+	.set_rate	= genclk_set_rate,
-+	.set_parent	= genclk_set_parent,
-+	.index		= 3,
-+};
-+static struct clk gclk4 = {
-+	.name		= "gclk4",
-+	.mode		= genclk_mode,
-+	.get_rate	= genclk_get_rate,
-+	.set_rate	= genclk_set_rate,
-+	.set_parent	= genclk_set_parent,
-+	.index		= 4,
-+};
-+
-+struct clk *at32_clock_list[] = {
-+	&osc32k,
-+	&osc0,
-+	&osc1,
-+	&pll0,
-+	&pll1,
-+	&cpu_clk,
-+	&hsb_clk,
-+	&pba_clk,
-+	&pbb_clk,
-+	&at32_pm_pclk,
-+	&at32_intc0_pclk,
-+	&hmatrix_clk,
-+	&ebi_clk,
-+	&hramc_clk,
-+	&smc0_pclk,
-+	&smc0_mck,
-+	&pdc_hclk,
-+	&pdc_pclk,
-+	&dmaca0_hclk,
-+	&pico_clk,
-+	&pio0_mck,
-+	&pio1_mck,
-+	&pio2_mck,
-+	&pio3_mck,
-+	&pio4_mck,
+  * AC97C
+  * -------------------------------------------------------------------- */
+ static struct resource atmel_ac97c0_resource[] __initdata = {
+@@ -1683,6 +2069,7 @@
+ 	&hmatrix_clk,
+ 	&ebi_clk,
+ 	&hramc_clk,
++	&sdramc_clk,
+ 	&smc0_pclk,
+ 	&smc0_mck,
+ 	&pdc_hclk,
+@@ -1694,7 +2081,10 @@
+ 	&pio2_mck,
+ 	&pio3_mck,
+ 	&pio4_mck,
+-	&at32_systc0_pclk,
 +	&at32_tcb0_t0_clk,
 +	&at32_tcb1_t0_clk,
 +	&atmel_psif0_pclk,
 +	&atmel_psif1_pclk,
-+	&atmel_usart0_usart,
-+	&atmel_usart1_usart,
-+	&atmel_usart2_usart,
-+	&atmel_usart3_usart,
-+	&atmel_pwm0_mck,
-+#if defined(CONFIG_CPU_AT32AP7000)
-+	&macb0_hclk,
-+	&macb0_pclk,
-+	&macb1_hclk,
-+	&macb1_pclk,
-+#endif
-+	&atmel_spi0_spi_clk,
-+	&atmel_spi1_spi_clk,
-+	&atmel_twi0_pclk,
-+	&atmel_mci0_pclk,
-+#if defined(CONFIG_CPU_AT32AP7000) || defined(CONFIG_CPU_AT32AP7002)
-+	&atmel_lcdfb0_hck1,
-+	&atmel_lcdfb0_pixclk,
-+#endif
-+	&ssc0_pclk,
-+	&ssc1_pclk,
-+	&ssc2_pclk,
-+	&usba0_hclk,
-+	&usba0_pclk,
-+	&atmel_ac97c0_pclk,
-+	&abdac0_pclk,
-+	&abdac0_sample_clk,
-+	&gclk0,
-+	&gclk1,
-+	&gclk2,
-+	&gclk3,
-+	&gclk4,
-+};
-+unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list);
+ 	&atmel_usart0_usart,
+ 	&atmel_usart1_usart,
+ 	&atmel_usart2_usart,
+@@ -1730,16 +2120,7 @@
+ };
+ unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list);
+ 
+-void __init at32_portmux_init(void)
+-{
+-	at32_init_pio(&pio0_device);
+-	at32_init_pio(&pio1_device);
+-	at32_init_pio(&pio2_device);
+-	at32_init_pio(&pio3_device);
+-	at32_init_pio(&pio4_device);
+-}
+-
+-void __init at32_clock_init(void)
++void __init setup_platform(void)
+ {
+ 	u32 cpu_mask = 0, hsb_mask = 0, pba_mask = 0, pbb_mask = 0;
+ 	int i;
+@@ -1794,4 +2175,36 @@
+ 	pm_writel(HSB_MASK, hsb_mask);
+ 	pm_writel(PBA_MASK, pba_mask);
+ 	pm_writel(PBB_MASK, pbb_mask);
 +
-+void __init at32_portmux_init(void)
-+{
++	/* Initialize the port muxes */
 +	at32_init_pio(&pio0_device);
 +	at32_init_pio(&pio1_device);
 +	at32_init_pio(&pio2_device);
@@ -10253,187 +6068,103 @@
 +	at32_init_pio(&pio4_device);
 +}
 +
-+void __init at32_clock_init(void)
++struct gen_pool *sram_pool;
++
++static int __init sram_init(void)
 +{
-+	u32 cpu_mask = 0, hsb_mask = 0, pba_mask = 0, pbb_mask = 0;
-+	int i;
++	struct gen_pool *pool;
 +
-+	if (pm_readl(MCCTRL) & PM_BIT(PLLSEL)) {
-+		main_clock = &pll0;
-+		cpu_clk.parent = &pll0;
-+	} else {
-+		main_clock = &osc0;
-+		cpu_clk.parent = &osc0;
-+	}
-+
-+	if (pm_readl(PLL0) & PM_BIT(PLLOSC))
-+		pll0.parent = &osc1;
-+	if (pm_readl(PLL1) & PM_BIT(PLLOSC))
-+		pll1.parent = &osc1;
-+
-+	genclk_init_parent(&gclk0);
-+	genclk_init_parent(&gclk1);
-+	genclk_init_parent(&gclk2);
-+	genclk_init_parent(&gclk3);
-+	genclk_init_parent(&gclk4);
-+#if defined(CONFIG_CPU_AT32AP7000) || defined(CONFIG_CPU_AT32AP7002)
-+	genclk_init_parent(&atmel_lcdfb0_pixclk);
-+#endif
-+	genclk_init_parent(&abdac0_sample_clk);
++	/* 1KiB granularity */
++	pool = gen_pool_create(10, -1);
++	if (!pool)
++		goto fail;
 +
-+	/*
-+	 * Turn on all clocks that have at least one user already, and
-+	 * turn off everything else. We only do this for module
-+	 * clocks, and even though it isn't particularly pretty to
-+	 * check the address of the mode function, it should do the
-+	 * trick...
-+	 */
-+	for (i = 0; i < ARRAY_SIZE(at32_clock_list); i++) {
-+		struct clk *clk = at32_clock_list[i];
++	if (gen_pool_add(pool, 0x24000000, 0x8000, -1))
++		goto err_pool_add;
 +
-+		if (clk->users == 0)
-+			continue;
++	sram_pool = pool;
++	return 0;
 +
-+		if (clk->mode == &cpu_clk_mode)
-+			cpu_mask |= 1 << clk->index;
-+		else if (clk->mode == &hsb_clk_mode)
-+			hsb_mask |= 1 << clk->index;
-+		else if (clk->mode == &pba_clk_mode)
-+			pba_mask |= 1 << clk->index;
-+		else if (clk->mode == &pbb_clk_mode)
-+			pbb_mask |= 1 << clk->index;
-+	}
-+
-+	pm_writel(CPU_MASK, cpu_mask);
-+	pm_writel(HSB_MASK, hsb_mask);
-+	pm_writel(PBA_MASK, pba_mask);
-+	pm_writel(PBB_MASK, pbb_mask);
-+}
---- a/arch/avr32/mach-at32ap/extint.c
-+++ b/arch/avr32/mach-at32ap/extint.c
-@@ -26,16 +26,10 @@
- #define EIC_MODE				0x0014
- #define EIC_EDGE				0x0018
- #define EIC_LEVEL				0x001c
--#define EIC_TEST				0x0020
- #define EIC_NMIC				0x0024
- 
--/* Bitfields in TEST */
--#define EIC_TESTEN_OFFSET			31
--#define EIC_TESTEN_SIZE				1
++err_pool_add:
++	gen_pool_destroy(pool);
++fail:
++	pr_err("Failed to create SRAM pool\n");
++	return -ENOMEM;
+ }
++core_initcall(sram_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/at32ap.c avr32-2.6/arch/avr32/mach-at32ap/at32ap.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/at32ap.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/at32ap.c	1970-01-01 01:00:00.000000000 +0100
+@@ -1,56 +0,0 @@
+-/*
+- * Copyright (C) 2006 Atmel Corporation
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 as
+- * published by the Free Software Foundation.
+- */
 -
- /* Bitfields in NMIC */
--#define EIC_EN_OFFSET				0
--#define EIC_EN_SIZE				1
-+#define EIC_NMIC_ENABLE				(1 << 0)
- 
- /* Bit manipulation macros */
- #define EIC_BIT(name)					\
-@@ -63,6 +57,9 @@
- 	unsigned int first_irq;
- };
- 
-+static struct eic *nmi_eic;
-+static bool nmi_enabled;
-+
- static void eic_ack_irq(unsigned int irq)
- {
- 	struct eic *eic = get_irq_chip_data(irq);
-@@ -133,8 +130,11 @@
- 		eic_writel(eic, EDGE, edge);
- 		eic_writel(eic, LEVEL, level);
- 
--		if (flow_type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
-+		if (flow_type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) {
- 			flow_type |= IRQ_LEVEL;
-+			__set_irq_handler_unlocked(irq, handle_level_irq);
-+		} else
-+			__set_irq_handler_unlocked(irq, handle_edge_irq);
- 		desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
- 		desc->status |= flow_type;
- 	}
-@@ -154,9 +154,8 @@
- static void demux_eic_irq(unsigned int irq, struct irq_desc *desc)
+-#include <linux/clk.h>
+-#include <linux/err.h>
+-#include <linux/init.h>
+-#include <linux/platform_device.h>
+-
+-#include <asm/arch/init.h>
+-
+-void __init setup_platform(void)
+-{
+-	at32_clock_init();
+-	at32_portmux_init();
+-}
+-
+-static int __init pdc_probe(struct platform_device *pdev)
+-{
+-	struct clk *pclk, *hclk;
+-
+-	pclk = clk_get(&pdev->dev, "pclk");
+-	if (IS_ERR(pclk)) {
+-		dev_err(&pdev->dev, "no pclk defined\n");
+-		return PTR_ERR(pclk);
+-	}
+-	hclk = clk_get(&pdev->dev, "hclk");
+-	if (IS_ERR(hclk)) {
+-		dev_err(&pdev->dev, "no hclk defined\n");
+-		clk_put(pclk);
+-		return PTR_ERR(hclk);
+-	}
+-
+-	clk_enable(pclk);
+-	clk_enable(hclk);
+-
+-	dev_info(&pdev->dev, "Atmel Peripheral DMA Controller enabled\n");
+-	return 0;
+-}
+-
+-static struct platform_driver pdc_driver = {
+-	.probe		= pdc_probe,
+-	.driver		= {
+-		.name	= "pdc",
+-	},
+-};
+-
+-static int __init pdc_init(void)
+-{
+-	return platform_driver_register(&pdc_driver);
+-}
+-arch_initcall(pdc_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/cpufreq.c avr32-2.6/arch/avr32/mach-at32ap/cpufreq.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/cpufreq.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/cpufreq.c	2008-06-12 15:03:55.891816030 +0200
+@@ -108,5 +108,4 @@
  {
- 	struct eic *eic = desc->handler_data;
--	struct irq_desc *ext_desc;
- 	unsigned long status, pending;
--	unsigned int i, ext_irq;
-+	unsigned int i;
- 
- 	status = eic_readl(eic, ISR);
- 	pending = status & eic_readl(eic, IMR);
-@@ -165,15 +164,28 @@
- 		i = fls(pending) - 1;
- 		pending &= ~(1 << i);
- 
--		ext_irq = i + eic->first_irq;
--		ext_desc = irq_desc + ext_irq;
--		if (ext_desc->status & IRQ_LEVEL)
--			handle_level_irq(ext_irq, ext_desc);
--		else
--			handle_edge_irq(ext_irq, ext_desc);
-+		generic_handle_irq(i + eic->first_irq);
- 	}
+ 	return cpufreq_register_driver(&at32_driver);
  }
- 
-+int nmi_enable(void)
-+{
-+	nmi_enabled = true;
-+
-+	if (nmi_eic)
-+		eic_writel(nmi_eic, NMIC, EIC_NMIC_ENABLE);
-+
-+	return 0;
-+}
-+
-+void nmi_disable(void)
-+{
-+	if (nmi_eic)
-+		eic_writel(nmi_eic, NMIC, 0);
-+
-+	nmi_enabled = false;
-+}
-+
- static int __init eic_probe(struct platform_device *pdev)
- {
- 	struct eic *eic;
-@@ -214,14 +226,13 @@
- 	pattern = eic_readl(eic, MODE);
- 	nr_irqs = fls(pattern);
- 
--	/* Trigger on falling edge unless overridden by driver */
--	eic_writel(eic, MODE, 0UL);
-+	/* Trigger on low level unless overridden by driver */
- 	eic_writel(eic, EDGE, 0UL);
-+	eic_writel(eic, LEVEL, 0UL);
- 
- 	eic->chip = &eic_chip;
- 
- 	for (i = 0; i < nr_irqs; i++) {
--		/* NOTE the handler we set here is ignored by the demux */
- 		set_irq_chip_and_handler(eic->first_irq + i, &eic_chip,
- 					 handle_level_irq);
- 		set_irq_chip_data(eic->first_irq + i, eic);
-@@ -230,6 +241,16 @@
- 	set_irq_chained_handler(int_irq, demux_eic_irq);
- 	set_irq_data(int_irq, eic);
- 
-+	if (pdev->id == 0) {
-+		nmi_eic = eic;
-+		if (nmi_enabled)
-+			/*
-+			 * Someone tried to enable NMI before we were
-+			 * ready. Do it now.
-+			 */
-+			nmi_enable();
-+	}
-+
- 	dev_info(&pdev->dev,
- 		 "External Interrupt Controller at 0x%p, IRQ %u\n",
- 		 eic->regs, int_irq);
---- /dev/null
-+++ b/arch/avr32/mach-at32ap/gpio-dev.c
+-
+-arch_initcall(at32_cpufreq_init);
++late_initcall(at32_cpufreq_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/gpio-dev.c avr32-2.6/arch/avr32/mach-at32ap/gpio-dev.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/gpio-dev.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/gpio-dev.c	2008-06-12 15:09:38.723815860 +0200
 @@ -0,0 +1,573 @@
 +/*
 + * GPIO /dev and configfs interface
@@ -11008,46 +6739,128 @@
 +	return err;
 +}
 +late_initcall(gpio_dev_init);
---- a/arch/avr32/mach-at32ap/intc.c
-+++ b/arch/avr32/mach-at32ap/intc.c
-@@ -13,7 +13,6 @@
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/hsmc.c avr32-2.6/arch/avr32/mach-at32ap/hsmc.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/hsmc.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/hsmc.c	2008-06-12 15:09:38.723815860 +0200
+@@ -278,4 +278,4 @@
+ {
+ 	return platform_driver_register(&hsmc_driver);
+ }
+-arch_initcall(hsmc_init);
++core_initcall(hsmc_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/intc.c avr32-2.6/arch/avr32/mach-at32ap/intc.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/intc.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/intc.c	2008-06-12 15:09:38.723815860 +0200
+@@ -1,5 +1,5 @@
+ /*
+- * Copyright (C) 2006 Atmel Corporation
++ * Copyright (C) 2006, 2008 Atmel Corporation
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -12,15 +12,20 @@
+ #include <linux/interrupt.h>
  #include <linux/irq.h>
  #include <linux/platform_device.h>
++#include <linux/sysdev.h>
  
 -#include <asm/intc.h>
  #include <asm/io.h>
  
  #include "intc.h"
---- a/arch/avr32/mach-at32ap/Kconfig
-+++ b/arch/avr32/mach-at32ap/Kconfig
-@@ -3,9 +3,9 @@
- menu "Atmel AVR32 AP options"
- 
- choice
--	prompt "AT32AP7000 static memory bus width"
--	depends on CPU_AT32AP7000
--	default AP7000_16_BIT_SMC
-+	prompt "AT32AP700x static memory bus width"
-+	depends on CPU_AT32AP700X
-+	default AP700X_16_BIT_SMC
- 	help
- 	  Define the width of the AP7000 external static memory interface.
- 	  This is used to determine how to mangle the address and/or data
-@@ -15,17 +15,24 @@
- 	  width for all chip selects, excluding the flash (which is using
- 	  raw access and is thus not affected by any of this.)
  
--config AP7000_32_BIT_SMC
-+config AP700X_32_BIT_SMC
- 	bool "32 bit"
+ struct intc {
+-	void __iomem	*regs;
+-	struct irq_chip	chip;
++	void __iomem		*regs;
++	struct irq_chip		chip;
++	struct sys_device	sysdev;
++#ifdef CONFIG_PM
++	unsigned long		suspend_ipr;
++	unsigned long		saved_ipr[64];
++#endif
+ };
  
--config AP7000_16_BIT_SMC
-+config AP700X_16_BIT_SMC
- 	bool "16 bit"
+ extern struct platform_device at32_intc0_device;
+@@ -137,6 +142,74 @@
+ 	panic("Interrupt controller initialization failed!\n");
+ }
  
--config AP7000_8_BIT_SMC
-+config AP700X_8_BIT_SMC
- 	bool "8 bit"
++#ifdef CONFIG_PM
++void intc_set_suspend_handler(unsigned long offset)
++{
++	intc0.suspend_ipr = offset;
++}
++
++static int intc_suspend(struct sys_device *sdev, pm_message_t state)
++{
++	struct intc *intc = container_of(sdev, struct intc, sysdev);
++	int i;
++
++	if (unlikely(!irqs_disabled())) {
++		pr_err("intc_suspend: called with interrupts enabled\n");
++		return -EINVAL;
++	}
++
++	if (unlikely(!intc->suspend_ipr)) {
++		pr_err("intc_suspend: suspend_ipr not initialized\n");
++		return -EINVAL;
++	}
++
++	for (i = 0; i < 64; i++) {
++		intc->saved_ipr[i] = intc_readl(intc, INTPR0 + 4 * i);
++		intc_writel(intc, INTPR0 + 4 * i, intc->suspend_ipr);
++	}
++
++	return 0;
++}
++
++static int intc_resume(struct sys_device *sdev)
++{
++	struct intc *intc = container_of(sdev, struct intc, sysdev);
++	int i;
++
++	WARN_ON(!irqs_disabled());
++
++	for (i = 0; i < 64; i++)
++		intc_writel(intc, INTPR0 + 4 * i, intc->saved_ipr[i]);
++
++	return 0;
++}
++#else
++#define intc_suspend	NULL
++#define intc_resume	NULL
++#endif
++
++static struct sysdev_class intc_class = {
++	.name		= "intc",
++	.suspend	= intc_suspend,
++	.resume		= intc_resume,
++};
++
++static int __init intc_init_sysdev(void)
++{
++	int ret;
++
++	ret = sysdev_class_register(&intc_class);
++	if (ret)
++		return ret;
++
++	intc0.sysdev.id = 0;
++	intc0.sysdev.cls = &intc_class;
++	ret = sysdev_register(&intc0.sysdev);
++
++	return ret;
++}
++device_initcall(intc_init_sysdev);
++
+ unsigned long intc_get_pending(unsigned int group)
+ {
+ 	return intc_readl(&intc0, INTREQ0 + 4 * group);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/Kconfig avr32-2.6/arch/avr32/mach-at32ap/Kconfig
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/Kconfig	2008-06-12 15:09:38.719815350 +0200
+@@ -26,6 +26,13 @@
  
  endchoice
  
@@ -11061,18 +6874,78 @@
  endmenu
  
  endif # PLATFORM_AT32AP
---- a/arch/avr32/mach-at32ap/Makefile
-+++ b/arch/avr32/mach-at32ap/Makefile
-@@ -1,4 +1,4 @@
- obj-y				+= at32ap.o clock.o intc.o extint.o pio.o hsmc.o
--obj-$(CONFIG_CPU_AT32AP7000)	+= at32ap7000.o
--obj-$(CONFIG_CPU_AT32AP7000)	+= time-tc.o
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/Makefile avr32-2.6/arch/avr32/mach-at32ap/Makefile
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/Makefile	2008-06-12 15:09:38.719815350 +0200
+@@ -1,4 +1,9 @@
+-obj-y				+= at32ap.o clock.o intc.o extint.o pio.o hsmc.o
+-obj-$(CONFIG_CPU_AT32AP700X)	+= at32ap700x.o
+-obj-$(CONFIG_CPU_AT32AP700X)	+= time-tc.o
++obj-y				+= pdc.o clock.o intc.o extint.o pio.o hsmc.o
 +obj-$(CONFIG_CPU_AT32AP700X)	+= at32ap700x.o pm-at32ap700x.o
  obj-$(CONFIG_CPU_FREQ_AT32AP)	+= cpufreq.o
 +obj-$(CONFIG_GPIO_DEV)		+= gpio-dev.o
---- a/arch/avr32/mach-at32ap/pio.c
-+++ b/arch/avr32/mach-at32ap/pio.c
-@@ -162,6 +162,82 @@
++obj-$(CONFIG_PM)		+= pm.o
++
++ifeq ($(CONFIG_PM_DEBUG),y)
++CFLAGS_pm.o	+= -DDEBUG
++endif
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/pdc.c avr32-2.6/arch/avr32/mach-at32ap/pdc.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/pdc.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/pdc.c	2008-06-12 15:09:38.723815860 +0200
+@@ -0,0 +1,48 @@
++/*
++ * Copyright (C) 2006 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/init.h>
++#include <linux/platform_device.h>
++
++static int __init pdc_probe(struct platform_device *pdev)
++{
++	struct clk *pclk, *hclk;
++
++	pclk = clk_get(&pdev->dev, "pclk");
++	if (IS_ERR(pclk)) {
++		dev_err(&pdev->dev, "no pclk defined\n");
++		return PTR_ERR(pclk);
++	}
++	hclk = clk_get(&pdev->dev, "hclk");
++	if (IS_ERR(hclk)) {
++		dev_err(&pdev->dev, "no hclk defined\n");
++		clk_put(pclk);
++		return PTR_ERR(hclk);
++	}
++
++	clk_enable(pclk);
++	clk_enable(hclk);
++
++	dev_info(&pdev->dev, "Atmel Peripheral DMA Controller enabled\n");
++	return 0;
++}
++
++static struct platform_driver pdc_driver = {
++	.probe		= pdc_probe,
++	.driver		= {
++		.name	= "pdc",
++	},
++};
++
++static int __init pdc_init(void)
++{
++	return platform_driver_register(&pdc_driver);
++}
++arch_initcall(pdc_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/pio.c avr32-2.6/arch/avr32/mach-at32ap/pio.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/pio.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/pio.c	2008-06-12 15:09:38.723815860 +0200
+@@ -157,6 +157,82 @@
  	dump_stack();
  }
  
@@ -11155,9 +7028,19 @@
  /*--------------------------------------------------------------------------*/
  
  /* GPIO API */
---- /dev/null
-+++ b/arch/avr32/mach-at32ap/pm-at32ap700x.S
-@@ -0,0 +1,66 @@
+@@ -318,6 +394,8 @@
+ 		const char *label;
+ 
+ 		label = gpiochip_is_requested(chip, i);
++		if (!label && (imr & mask))
++			label = "[irq]";
+ 		if (!label)
+ 			continue;
+ 
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/pm-at32ap700x.S avr32-2.6/arch/avr32/mach-at32ap/pm-at32ap700x.S
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/pm-at32ap700x.S	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/pm-at32ap700x.S	2008-06-12 15:09:38.723815860 +0200
+@@ -0,0 +1,174 @@
 +/*
 + * Low-level Power Management code.
 + *
@@ -11172,6 +7055,12 @@
 +#include <asm/thread_info.h>
 +#include <asm/arch/pm.h>
 +
++#include "pm.h"
++#include "sdramc.h"
++
++/* Same as 0xfff00000 but fits in a 21 bit signed immediate */
++#define PM_BASE	-0x100000
++
 +	.section .bss, "wa", @nobits
 +	.global	disable_idle_sleep
 +	.type	disable_idle_sleep, @object
@@ -11224,8 +7113,440 @@
 +	unmask_interrupts
 +	retal	r12
 +	.size	cpu_idle_skip_sleep, . - cpu_idle_skip_sleep
---- a/arch/avr32/mach-at32ap/time-tc.c
-+++ /dev/null
++
++#ifdef CONFIG_PM
++	.section .init.text, "ax", @progbits
++
++	.global	pm_exception
++	.type	pm_exception, @function
++pm_exception:
++	/*
++	 * Exceptions are masked when we switch to this handler, so
++	 * we'll only get "unrecoverable" exceptions (offset 0.)
++	 */
++	sub	r12, pc, . - .Lpanic_msg
++	lddpc	pc, .Lpanic_addr
++
++	.align	2
++.Lpanic_addr:
++	.long	panic
++.Lpanic_msg:
++	.asciz	"Unrecoverable exception during suspend\n"
++	.size	pm_exception, . - pm_exception
++
++	.global	pm_irq0
++	.type	pm_irq0, @function
++pm_irq0:
++	/* Disable interrupts and return after the sleep instruction */
++	mfsr	r9, SYSREG_RSR_INT0
++	mtsr	SYSREG_RAR_INT0, r8
++	sbr	r9, SYSREG_GM_OFFSET
++	mtsr	SYSREG_RSR_INT0, r9
++	rete
++
++	/*
++	 * void cpu_enter_standby(unsigned long sdramc_base)
++	 *
++	 * Enter PM_SUSPEND_STANDBY mode. At this point, all drivers
++	 * are suspended and interrupts are disabled. Interrupts
++	 * marked as 'wakeup' event sources may still come along and
++	 * get us out of here.
++	 *
++	 * The SDRAM will be put into self-refresh mode (which does
++	 * not require a clock from the CPU), and the CPU will be put
++	 * into "frozen" mode (HSB bus stopped). The SDRAM controller
++	 * will automatically bring the SDRAM into normal mode on the
++	 * first access, and the power manager will automatically
++	 * start the HSB and CPU clocks upon a wakeup event.
++	 *
++	 * This code uses the same "skip sleep" technique as above.
++	 * It is very important that we jump directly to
++	 * cpu_after_sleep after the sleep instruction since that's
++	 * where we'll end up if the interrupt handler decides that we
++	 * need to skip the sleep instruction.
++	 */
++	.global	pm_standby
++	.type	pm_standby, @function
++pm_standby:
++	/*
++	 * interrupts are already masked at this point, and EVBA
++	 * points to pm_exception above.
++	 */
++	ld.w	r10, r12[SDRAMC_LPR]
++	sub	r8, pc, . - 1f		/* return address for irq handler */
++	mov	r11, SDRAMC_LPR_LPCB_SELF_RFR
++	bfins	r10, r11, 0, 2		/* LPCB <- self Refresh */
++	sync	0			/* flush write buffer */
++	st.w	r12[SDRAMC_LPR], r11	/* put SDRAM in self-refresh mode */
++	ld.w	r11, r12[SDRAMC_LPR]
++	unmask_interrupts
++	sleep	CPU_SLEEP_FROZEN
++1:	mask_interrupts
++	retal	r12
++	.size	pm_standby, . - pm_standby
++
++	.global	pm_suspend_to_ram
++	.type	pm_suspend_to_ram, @function
++pm_suspend_to_ram:
++	/*
++	 * interrupts are already masked at this point, and EVBA
++	 * points to pm_exception above.
++	 */
++	mov	r11, 0
++	cache	r11[2], 8		/* clean all dcache lines */
++	sync	0			/* flush write buffer */
++	ld.w	r10, r12[SDRAMC_LPR]
++	sub	r8, pc, . - 1f		/* return address for irq handler */
++	mov	r11, SDRAMC_LPR_LPCB_SELF_RFR
++	bfins	r10, r11, 0, 2		/* LPCB <- self refresh */
++	st.w	r12[SDRAMC_LPR], r10	/* put SDRAM in self-refresh mode */
++	ld.w	r11, r12[SDRAMC_LPR]
++
++	unmask_interrupts
++	sleep	CPU_SLEEP_STOP
++1:	mask_interrupts
++
++	retal	r12
++	.size	pm_suspend_to_ram, . - pm_suspend_to_ram
++
++	.global	pm_sram_end
++	.type	pm_sram_end, @function
++pm_sram_end:
++	.size	pm_sram_end, 0
++
++#endif /* CONFIG_PM */
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/pm.c avr32-2.6/arch/avr32/mach-at32ap/pm.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/pm.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/pm.c	2008-06-12 15:09:38.723815860 +0200
+@@ -0,0 +1,245 @@
++/*
++ * AVR32 AP Power Management
++ *
++ * Copyright (C) 2008 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ */
++#include <linux/io.h>
++#include <linux/suspend.h>
++#include <linux/vmalloc.h>
++
++#include <asm/cacheflush.h>
++#include <asm/sysreg.h>
++
++#include <asm/arch/pm.h>
++#include <asm/arch/sram.h>
++
++/* FIXME: This is only valid for AP7000 */
++#define SDRAMC_BASE	0xfff03800
++
++#include "sdramc.h"
++
++#define SRAM_PAGE_FLAGS	(SYSREG_BIT(TLBELO_D) | SYSREG_BF(SZ, 1)	\
++				| SYSREG_BF(AP, 3) | SYSREG_BIT(G))
++
++
++static unsigned long	pm_sram_start;
++static size_t		pm_sram_size;
++static struct vm_struct	*pm_sram_area;
++
++static void (*avr32_pm_enter_standby)(unsigned long sdramc_base);
++static void (*avr32_pm_enter_str)(unsigned long sdramc_base);
++
++/*
++ * Must be called with interrupts disabled. Exceptions will be masked
++ * on return (i.e. all exceptions will be "unrecoverable".)
++ */
++static void *avr32_pm_map_sram(void)
++{
++	unsigned long	vaddr;
++	unsigned long	page_addr;
++	u32		tlbehi;
++	u32		mmucr;
++
++	vaddr = (unsigned long)pm_sram_area->addr;
++	page_addr = pm_sram_start & PAGE_MASK;
++
++	/*
++	 * Mask exceptions and grab the first TLB entry. We won't be
++	 * needing it while sleeping.
++	 */
++	asm volatile("ssrf	%0" : : "i"(SYSREG_EM_OFFSET) : "memory");
++
++	mmucr = sysreg_read(MMUCR);
++	tlbehi = sysreg_read(TLBEHI);
++	sysreg_write(MMUCR, SYSREG_BFINS(DRP, 0, mmucr));
++
++	tlbehi = SYSREG_BF(ASID, SYSREG_BFEXT(ASID, tlbehi));
++	tlbehi |= vaddr & PAGE_MASK;
++	tlbehi |= SYSREG_BIT(TLBEHI_V);
++
++	sysreg_write(TLBELO, page_addr | SRAM_PAGE_FLAGS);
++	sysreg_write(TLBEHI, tlbehi);
++	__builtin_tlbw();
++
++	return (void *)(vaddr + pm_sram_start - page_addr);
++}
++
++/*
++ * Must be called with interrupts disabled. Exceptions will be
++ * unmasked on return.
++ */
++static void avr32_pm_unmap_sram(void)
++{
++	u32	mmucr;
++	u32	tlbehi;
++	u32	tlbarlo;
++
++	/* Going to update TLB entry at index 0 */
++	mmucr = sysreg_read(MMUCR);
++	tlbehi = sysreg_read(TLBEHI);
++	sysreg_write(MMUCR, SYSREG_BFINS(DRP, 0, mmucr));
++
++	/* Clear the "valid" bit */
++	tlbehi = SYSREG_BF(ASID, SYSREG_BFEXT(ASID, tlbehi));
++	sysreg_write(TLBEHI, tlbehi);
++
++	/* Mark it as "not accessed" */
++	tlbarlo = sysreg_read(TLBARLO);
++	sysreg_write(TLBARLO, tlbarlo | 0x80000000U);
++
++	/* Update the TLB */
++	__builtin_tlbw();
++
++	/* Unmask exceptions */
++	asm volatile("csrf	%0" : : "i"(SYSREG_EM_OFFSET) : "memory");
++}
++
++static int avr32_pm_valid_state(suspend_state_t state)
++{
++	switch (state) {
++	case PM_SUSPEND_ON:
++	case PM_SUSPEND_STANDBY:
++	case PM_SUSPEND_MEM:
++		return 1;
++
++	default:
++		return 0;
++	}
++}
++
++static int avr32_pm_enter(suspend_state_t state)
++{
++	u32		lpr_saved;
++	u32		evba_saved;
++	void		*sram;
++
++	switch (state) {
++	case PM_SUSPEND_STANDBY:
++		sram = avr32_pm_map_sram();
++
++		/* Switch to in-sram exception handlers */
++		evba_saved = sysreg_read(EVBA);
++		sysreg_write(EVBA, (unsigned long)sram);
++
++		/*
++		 * Save the LPR register so that we can re-enable
++		 * SDRAM Low Power mode on resume.
++		 */
++		lpr_saved = sdramc_readl(LPR);
++		pr_debug("%s: Entering standby...\n", __func__);
++		avr32_pm_enter_standby(SDRAMC_BASE);
++		sdramc_writel(LPR, lpr_saved);
++
++		/* Switch back to regular exception handlers */
++		sysreg_write(EVBA, evba_saved);
++
++		avr32_pm_unmap_sram();
++		break;
++
++	case PM_SUSPEND_MEM:
++		sram = avr32_pm_map_sram();
++
++		/* Switch to in-sram exception handlers */
++		evba_saved = sysreg_read(EVBA);
++		sysreg_write(EVBA, (unsigned long)sram);
++
++		/*
++		 * Save the LPR register so that we can re-enable
++		 * SDRAM Low Power mode on resume.
++		 */
++		lpr_saved = sdramc_readl(LPR);
++		pr_debug("%s: Entering suspend-to-ram...\n", __func__);
++		avr32_pm_enter_str(SDRAMC_BASE);
++		sdramc_writel(LPR, lpr_saved);
++
++		/* Switch back to regular exception handlers */
++		sysreg_write(EVBA, evba_saved);
++
++		avr32_pm_unmap_sram();
++		break;
++
++	case PM_SUSPEND_ON:
++		pr_debug("%s: Entering idle...\n", __func__);
++		cpu_enter_idle();
++		break;
++
++	default:
++		pr_debug("%s: Invalid suspend state %d\n", __func__, state);
++		goto out;
++	}
++
++	pr_debug("%s: wakeup\n", __func__);
++
++out:
++	return 0;
++}
++
++static struct platform_suspend_ops avr32_pm_ops = {
++	.valid	= avr32_pm_valid_state,
++	.enter	= avr32_pm_enter,
++};
++
++static unsigned long avr32_pm_offset(void *symbol)
++{
++	extern u8 pm_exception[];
++
++	return (unsigned long)symbol - (unsigned long)pm_exception;
++}
++
++static int __init avr32_pm_init(void)
++{
++	extern u8 pm_exception[];
++	extern u8 pm_irq0[];
++	extern u8 pm_standby[];
++	extern u8 pm_suspend_to_ram[];
++	extern u8 pm_sram_end[];
++	void *dst;
++
++	/*
++	 * To keep things simple, we depend on not needing more than a
++	 * single page.
++	 */
++	pm_sram_size = avr32_pm_offset(pm_sram_end);
++	if (pm_sram_size > PAGE_SIZE)
++		goto err;
++
++	pm_sram_start = sram_alloc(pm_sram_size);
++	if (!pm_sram_start)
++		goto err_alloc_sram;
++
++	/* Grab a virtual area we can use later on. */
++	pm_sram_area = get_vm_area(pm_sram_size, VM_IOREMAP);
++	if (!pm_sram_area)
++		goto err_vm_area;
++	pm_sram_area->phys_addr = pm_sram_start;
++
++	local_irq_disable();
++	dst = avr32_pm_map_sram();
++	memcpy(dst, pm_exception, pm_sram_size);
++	flush_dcache_region(dst, pm_sram_size);
++	invalidate_icache_region(dst, pm_sram_size);
++	avr32_pm_unmap_sram();
++	local_irq_enable();
++
++	avr32_pm_enter_standby = dst + avr32_pm_offset(pm_standby);
++	avr32_pm_enter_str = dst + avr32_pm_offset(pm_suspend_to_ram);
++	intc_set_suspend_handler(avr32_pm_offset(pm_irq0));
++
++	suspend_set_ops(&avr32_pm_ops);
++
++	printk("AVR32 AP Power Management enabled\n");
++
++	return 0;
++
++err_vm_area:
++	sram_free(pm_sram_start, pm_sram_size);
++err_alloc_sram:
++err:
++	pr_err("AVR32 Power Management initialization failed\n");
++	return -ENOMEM;
++}
++arch_initcall(avr32_pm_init);
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/sdramc.h avr32-2.6/arch/avr32/mach-at32ap/sdramc.h
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/sdramc.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/arch/avr32/mach-at32ap/sdramc.h	2008-06-12 15:09:38.723815860 +0200
+@@ -0,0 +1,76 @@
++/*
++ * Register definitions for the AT32AP SDRAM Controller
++ *
++ * Copyright (C) 2008 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ */
++
++/* Register offsets */
++#define SDRAMC_MR			0x0000
++#define SDRAMC_TR			0x0004
++#define SDRAMC_CR			0x0008
++#define SDRAMC_HSR			0x000c
++#define SDRAMC_LPR			0x0010
++#define SDRAMC_IER			0x0014
++#define SDRAMC_IDR			0x0018
++#define SDRAMC_IMR			0x001c
++#define SDRAMC_ISR			0x0020
++#define SDRAMC_MDR			0x0024
++
++/* MR - Mode Register */
++#define SDRAMC_MR_MODE_NORMAL		(  0 <<  0)
++#define SDRAMC_MR_MODE_NOP		(  1 <<  0)
++#define SDRAMC_MR_MODE_BANKS_PRECHARGE	(  2 <<  0)
++#define SDRAMC_MR_MODE_LOAD_MODE	(  3 <<  0)
++#define SDRAMC_MR_MODE_AUTO_REFRESH	(  4 <<  0)
++#define SDRAMC_MR_MODE_EXT_LOAD_MODE	(  5 <<  0)
++#define SDRAMC_MR_MODE_POWER_DOWN	(  6 <<  0)
++
++/* CR - Configuration Register */
++#define SDRAMC_CR_NC_8_BITS		(  0 <<  0)
++#define SDRAMC_CR_NC_9_BITS		(  1 <<  0)
++#define SDRAMC_CR_NC_10_BITS		(  2 <<  0)
++#define SDRAMC_CR_NC_11_BITS		(  3 <<  0)
++#define SDRAMC_CR_NR_11_BITS		(  0 <<  2)
++#define SDRAMC_CR_NR_12_BITS		(  1 <<  2)
++#define SDRAMC_CR_NR_13_BITS		(  2 <<  2)
++#define SDRAMC_CR_NB_2_BANKS		(  0 <<  4)
++#define SDRAMC_CR_NB_4_BANKS		(  1 <<  4)
++#define SDRAMC_CR_CAS(x)		((x) <<  5)
++#define SDRAMC_CR_DBW_32_BITS		(  0 <<  7)
++#define SDRAMC_CR_DBW_16_BITS		(  1 <<  7)
++#define SDRAMC_CR_TWR(x)		((x) <<  8)
++#define SDRAMC_CR_TRC(x)		((x) << 12)
++#define SDRAMC_CR_TRP(x)		((x) << 16)
++#define SDRAMC_CR_TRCD(x)		((x) << 20)
++#define SDRAMC_CR_TRAS(x)		((x) << 24)
++#define SDRAMC_CR_TXSR(x)		((x) << 28)
++
++/* HSR - High Speed Register */
++#define SDRAMC_HSR_DA			(  1 <<  0)
++
++/* LPR - Low Power Register */
++#define SDRAMC_LPR_LPCB_INHIBIT		(  0 <<  0)
++#define SDRAMC_LPR_LPCB_SELF_RFR	(  1 <<  0)
++#define SDRAMC_LPR_LPCB_PDOWN		(  2 <<  0)
++#define SDRAMC_LPR_LPCB_DEEP_PDOWN	(  3 <<  0)
++#define SDRAMC_LPR_PASR(x)		((x) <<  4)
++#define SDRAMC_LPR_TCSR(x)		((x) <<  8)
++#define SDRAMC_LPR_DS(x)		((x) << 10)
++#define SDRAMC_LPR_TIMEOUT(x)		((x) << 12)
++
++/* IER/IDR/IMR/ISR - Interrupt Enable/Disable/Mask/Status Register */
++#define SDRAMC_ISR_RES			(  1 <<  0)
++
++/* MDR - Memory Device Register */
++#define SDRAMC_MDR_MD_SDRAM		(  0 <<  0)
++#define SDRAMC_MDR_MD_LOW_PWR_SDRAM	(  1 <<  0)
++
++/* Register access macros */
++#define sdramc_readl(reg) \
++	__raw_readl((void __iomem __force *)SDRAMC_BASE + SDRAMC_##reg)
++#define sdramc_writel(reg, value) \
++	__raw_writel(value, (void __iomem __force *)SDRAMC_BASE + SDRAMC_##reg)
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mach-at32ap/time-tc.c avr32-2.6/arch/avr32/mach-at32ap/time-tc.c
+--- linux-2.6.25.6/arch/avr32/mach-at32ap/time-tc.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mach-at32ap/time-tc.c	1970-01-01 01:00:00.000000000 +0100
 @@ -1,218 +0,0 @@
 -/*
 - * Copyright (C) 2004-2007 Atmel Corporation
@@ -11445,343 +7766,485 @@
 -
 -	return IRQ_NONE;
 -}
---- a/arch/avr32/Makefile
-+++ b/arch/avr32/Makefile
-@@ -16,7 +16,7 @@
- CFLAGS_MODULE	+= -mno-relax
- LDFLAGS_vmlinux	+= --relax
- 
--cpuflags-$(CONFIG_CPU_AT32AP7000)	+= -mcpu=ap7000
-+cpuflags-$(CONFIG_PLATFORM_AT32AP)	+= -march=ap
- 
- KBUILD_CFLAGS	+= $(cpuflags-y)
- KBUILD_AFLAGS	+= $(cpuflags-y)
-@@ -31,6 +31,8 @@
- core-$(CONFIG_LOADER_U_BOOT)		+= arch/avr32/boot/u-boot/
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/Makefile avr32-2.6/arch/avr32/Makefile
+--- linux-2.6.25.6/arch/avr32/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/Makefile	2008-06-12 15:09:38.711815728 +0200
+@@ -32,6 +32,7 @@
  core-y					+= arch/avr32/kernel/
  core-y					+= arch/avr32/mm/
-+drivers-$(CONFIG_OPROFILE)		+= arch/avr32/oprofile/
+ drivers-$(CONFIG_OPROFILE)		+= arch/avr32/oprofile/
 +drivers-y				+= arch/avr32/drivers/
  libs-y					+= arch/avr32/lib/
  
  archincdir-$(CONFIG_PLATFORM_AT32AP)	:= arch-at32ap
---- a/arch/avr32/mm/dma-coherent.c
-+++ b/arch/avr32/mm/dma-coherent.c
-@@ -41,6 +41,13 @@
- 	struct page *page, *free, *end;
- 	int order;
- 
-+	/* Following is a work-around (a.k.a. hack) to prevent pages
-+	 * with __GFP_COMP being passed to split_page() which cannot
-+	 * handle them.  The real problem is that this flag probably
-+	 * should be 0 on AVR32 as it is not supported on this
-+	 * platform--see CONFIG_HUGETLB_PAGE. */
-+	gfp &= ~(__GFP_COMP);
-+
- 	size = PAGE_ALIGN(size);
- 	order = get_order(size);
- 
---- a/arch/avr32/mm/fault.c
-+++ b/arch/avr32/mm/fault.c
-@@ -189,6 +189,8 @@
- 
- 	page = sysreg_read(PTBR);
- 	printk(KERN_ALERT "ptbr = %08lx", page);
-+	if (address >= TASK_SIZE)
-+		page = (unsigned long)swapper_pg_dir;
- 	if (page) {
- 		page = ((unsigned long *)page)[address >> 22];
- 		printk(" pgd = %08lx", page);
---- a/arch/avr32/mm/tlb.c
-+++ b/arch/avr32/mm/tlb.c
-@@ -348,7 +348,7 @@
- 	return 0;
- }
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/mm/init.c avr32-2.6/arch/avr32/mm/init.c
+--- linux-2.6.25.6/arch/avr32/mm/init.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/mm/init.c	2008-06-12 15:09:38.727815811 +0200
+@@ -11,6 +11,7 @@
+ #include <linux/swap.h>
+ #include <linux/init.h>
+ #include <linux/mmzone.h>
++#include <linux/module.h>
+ #include <linux/bootmem.h>
+ #include <linux/pagemap.h>
+ #include <linux/nodemask.h>
+@@ -28,15 +29,13 @@
+ pgd_t swapper_pg_dir[PTRS_PER_PGD];
  
--static struct seq_operations tlb_ops = {
-+static const struct seq_operations tlb_ops = {
- 	.start		= tlb_start,
- 	.next		= tlb_next,
- 	.stop		= tlb_stop,
---- /dev/null
-+++ b/arch/avr32/oprofile/Makefile
-@@ -0,0 +1,8 @@
-+obj-$(CONFIG_OPROFILE) += oprofile.o
-+
-+oprofile-y		:= $(addprefix ../../../drivers/oprofile/,	\
-+				oprof.o cpu_buffer.o buffer_sync.o	\
-+				event_buffer.o oprofile_files.o		\
-+				oprofilefs.o oprofile_stats.o		\
-+				timer_int.o)
-+oprofile-y		+= op_model_avr32.o
---- /dev/null
-+++ b/arch/avr32/oprofile/op_model_avr32.c
-@@ -0,0 +1,234 @@
-+/*
-+ * AVR32 Performance Counter Driver
-+ *
-+ * Copyright (C) 2005-2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ *
-+ * Author: Ronny Pedersen
-+ */
-+#include <linux/errno.h>
-+#include <linux/interrupt.h>
-+#include <linux/irq.h>
-+#include <linux/oprofile.h>
-+#include <linux/sched.h>
-+#include <linux/types.h>
-+
-+#include <asm/sysreg.h>
-+#include <asm/system.h>
-+
-+#define AVR32_PERFCTR_IRQ_GROUP	0
-+#define AVR32_PERFCTR_IRQ_LINE	1
-+
-+enum { PCCNT, PCNT0, PCNT1, NR_counter };
-+
-+struct avr32_perf_counter {
-+	unsigned long	enabled;
-+	unsigned long	event;
-+	unsigned long	count;
-+	unsigned long	unit_mask;
-+	unsigned long	kernel;
-+	unsigned long	user;
-+
-+	u32		ie_mask;
-+	u32		flag_mask;
-+};
-+
-+static struct avr32_perf_counter counter[NR_counter] = {
-+	{
-+		.ie_mask	= SYSREG_BIT(IEC),
-+		.flag_mask	= SYSREG_BIT(FC),
-+	}, {
-+		.ie_mask	= SYSREG_BIT(IE0),
-+		.flag_mask	= SYSREG_BIT(F0),
-+	}, {
-+		.ie_mask	= SYSREG_BIT(IE1),
-+		.flag_mask	= SYSREG_BIT(F1),
-+	},
-+};
-+
-+static void avr32_perf_counter_reset(void)
-+{
-+	/* Reset all counter and disable/clear all interrupts */
-+	sysreg_write(PCCR, (SYSREG_BIT(PCCR_R)
-+				| SYSREG_BIT(PCCR_C)
-+				| SYSREG_BIT(FC)
-+				| SYSREG_BIT(F0)
-+				| SYSREG_BIT(F1)));
-+}
-+
-+static irqreturn_t avr32_perf_counter_interrupt(int irq, void *dev_id)
-+{
-+	struct avr32_perf_counter *ctr = dev_id;
-+	struct pt_regs *regs;
-+	u32 pccr;
-+
-+	if (likely(!(intc_get_pending(AVR32_PERFCTR_IRQ_GROUP)
-+					& (1 << AVR32_PERFCTR_IRQ_LINE))))
-+		return IRQ_NONE;
-+
-+	regs = get_irq_regs();
-+	pccr = sysreg_read(PCCR);
-+
-+	/* Clear the interrupt flags we're about to handle */
-+	sysreg_write(PCCR, pccr);
-+
-+	/* PCCNT */
-+	if (ctr->enabled && (pccr & ctr->flag_mask)) {
-+		sysreg_write(PCCNT, -ctr->count);
-+		oprofile_add_sample(regs, PCCNT);
-+	}
-+	ctr++;
-+	/* PCNT0 */
-+	if (ctr->enabled && (pccr & ctr->flag_mask)) {
-+		sysreg_write(PCNT0, -ctr->count);
-+		oprofile_add_sample(regs, PCNT0);
-+	}
-+	ctr++;
-+	/* PCNT1 */
-+	if (ctr->enabled && (pccr & ctr->flag_mask)) {
-+		sysreg_write(PCNT1, -ctr->count);
-+		oprofile_add_sample(regs, PCNT1);
-+	}
-+
-+	return IRQ_HANDLED;
-+}
-+
-+static int avr32_perf_counter_create_files(struct super_block *sb,
-+		struct dentry *root)
-+{
-+	struct dentry *dir;
-+	unsigned int i;
-+	char filename[4];
-+
-+	for (i = 0; i < NR_counter; i++) {
-+		snprintf(filename, sizeof(filename), "%u", i);
-+		dir = oprofilefs_mkdir(sb, root, filename);
-+
-+		oprofilefs_create_ulong(sb, dir, "enabled",
-+				&counter[i].enabled);
-+		oprofilefs_create_ulong(sb, dir, "event",
-+				&counter[i].event);
-+		oprofilefs_create_ulong(sb, dir, "count",
-+				&counter[i].count);
-+
-+		/* Dummy entries */
-+		oprofilefs_create_ulong(sb, dir, "kernel",
-+				&counter[i].kernel);
-+		oprofilefs_create_ulong(sb, dir, "user",
-+				&counter[i].user);
-+		oprofilefs_create_ulong(sb, dir, "unit_mask",
-+				&counter[i].unit_mask);
-+	}
-+
-+	return 0;
-+}
-+
-+static int avr32_perf_counter_setup(void)
-+{
-+	struct avr32_perf_counter *ctr;
-+	u32 pccr;
-+	int ret;
-+	int i;
-+
-+	pr_debug("avr32_perf_counter_setup\n");
-+
-+	if (sysreg_read(PCCR) & SYSREG_BIT(PCCR_E)) {
-+		printk(KERN_ERR
-+			"oprofile: setup: perf counter already enabled\n");
-+		return -EBUSY;
-+	}
-+
-+	ret = request_irq(AVR32_PERFCTR_IRQ_GROUP,
-+			avr32_perf_counter_interrupt, IRQF_SHARED,
-+			"oprofile", counter);
-+	if (ret)
-+		return ret;
-+
-+	avr32_perf_counter_reset();
-+
-+	pccr = 0;
-+	for (i = PCCNT; i < NR_counter; i++) {
-+		ctr = &counter[i];
-+		if (!ctr->enabled)
-+			continue;
-+
-+		pr_debug("enabling counter %d...\n", i);
-+
-+		pccr |= ctr->ie_mask;
-+
-+		switch (i) {
-+		case PCCNT:
-+			/* PCCNT always counts cycles, so no events */
-+			sysreg_write(PCCNT, -ctr->count);
-+			break;
-+		case PCNT0:
-+			pccr |= SYSREG_BF(CONF0, ctr->event);
-+			sysreg_write(PCNT0, -ctr->count);
-+			break;
-+		case PCNT1:
-+			pccr |= SYSREG_BF(CONF1, ctr->event);
-+			sysreg_write(PCNT1, -ctr->count);
-+			break;
-+		}
-+	}
-+
-+	pr_debug("oprofile: writing 0x%x to PCCR...\n", pccr);
-+
-+	sysreg_write(PCCR, pccr);
-+
-+	return 0;
-+}
-+
-+static void avr32_perf_counter_shutdown(void)
-+{
-+	pr_debug("avr32_perf_counter_shutdown\n");
-+
-+	avr32_perf_counter_reset();
-+	free_irq(AVR32_PERFCTR_IRQ_GROUP, counter);
-+}
-+
-+static int avr32_perf_counter_start(void)
-+{
-+	pr_debug("avr32_perf_counter_start\n");
-+
-+	sysreg_write(PCCR, sysreg_read(PCCR) | SYSREG_BIT(PCCR_E));
-+
-+	return 0;
-+}
-+
-+static void avr32_perf_counter_stop(void)
-+{
-+	pr_debug("avr32_perf_counter_stop\n");
-+
-+	sysreg_write(PCCR, sysreg_read(PCCR) & ~SYSREG_BIT(PCCR_E));
-+}
-+
-+static struct oprofile_operations avr32_perf_counter_ops __initdata = {
-+	.create_files	= avr32_perf_counter_create_files,
-+	.setup		= avr32_perf_counter_setup,
-+	.shutdown	= avr32_perf_counter_shutdown,
-+	.start		= avr32_perf_counter_start,
-+	.stop		= avr32_perf_counter_stop,
-+	.cpu_type	= "avr32",
-+};
-+
-+int __init oprofile_arch_init(struct oprofile_operations *ops)
-+{
-+	if (!(current_cpu_data.features & AVR32_FEATURE_PCTR))
-+		return -ENODEV;
-+
-+	memcpy(ops, &avr32_perf_counter_ops,
-+			sizeof(struct oprofile_operations));
-+
-+	printk(KERN_INFO "oprofile: using AVR32 performance monitoring.\n");
-+
-+	return 0;
-+}
-+
-+void oprofile_arch_exit(void)
-+{
-+
-+}
---- a/Documentation/kernel-parameters.txt
-+++ b/Documentation/kernel-parameters.txt
-@@ -34,6 +34,7 @@
- 	ALSA	ALSA sound support is enabled.
- 	APIC	APIC support is enabled.
- 	APM	Advanced Power Management support is enabled.
-+	AVR32	AVR32 architecture is enabled.
- 	AX25	Appropriate AX.25 support is enabled.
- 	BLACKFIN Blackfin architecture is enabled.
- 	DRM	Direct Rendering Management support is enabled.
-@@ -1124,6 +1125,10 @@
- 			of returning the full 64-bit number.
- 			The default is to return 64-bit inode numbers.
+ struct page *empty_zero_page;
++EXPORT_SYMBOL(empty_zero_page);
  
-+	nmi_debug=	[KNL,AVR32] Specify one or more actions to take
-+			when a NMI is triggered.
-+			Format: [state][,regs][,debounce][,die]
-+
- 	nmi_watchdog=	[KNL,BUGS=X86-32] Debugging features for SMP kernels
+ /*
+  * Cache of MMU context last used.
+  */
+ unsigned long mmu_context_cache = NO_CONTEXT;
  
- 	no387		[BUGS=X86-32] Tells the kernel to use the 387 maths
---- a/drivers/clocksource/Makefile
-+++ b/drivers/clocksource/Makefile
+-#define START_PFN	(NODE_DATA(0)->bdata->node_boot_start >> PAGE_SHIFT)
+-#define MAX_LOW_PFN	(NODE_DATA(0)->bdata->node_low_pfn)
+-
+ void show_mem(void)
+ {
+ 	int total = 0, reserved = 0, cached = 0;
+diff --exclude=.git -urN linux-2.6.25.6/arch/avr32/oprofile/op_model_avr32.c avr32-2.6/arch/avr32/oprofile/op_model_avr32.c
+--- linux-2.6.25.6/arch/avr32/oprofile/op_model_avr32.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/arch/avr32/oprofile/op_model_avr32.c	2008-06-12 15:03:55.895816260 +0200
+@@ -16,7 +16,6 @@
+ #include <linux/sched.h>
+ #include <linux/types.h>
+ 
+-#include <asm/intc.h>
+ #include <asm/sysreg.h>
+ #include <asm/system.h>
+ 
+diff --exclude=.git -urN linux-2.6.25.6/Documentation/ABI/stable/sysfs-class-ubi avr32-2.6/Documentation/ABI/stable/sysfs-class-ubi
+--- linux-2.6.25.6/Documentation/ABI/stable/sysfs-class-ubi	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/Documentation/ABI/stable/sysfs-class-ubi	2008-06-12 15:03:55.427814470 +0200
+@@ -0,0 +1,212 @@
++What:		/sys/class/ubi/
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		The ubi/ class sub-directory belongs to the UBI subsystem and
++		provides general UBI information, per-UBI device information
++		and per-UBI volume information.
++
++What:		/sys/class/ubi/version
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		This file contains version of the latest supported UBI on-media
++		format. Currently it is 1, and there is no plan to change this.
++		However, if in the future UBI needs on-flash format changes
++		which cannot be done in a compatible manner, a new format
++		version will be added. So this is a mechanism for possible
++		future backward-compatible (but forward-incompatible)
++		improvements.
++
++What:		/sys/class/ubiX/
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		The /sys/class/ubi0, /sys/class/ubi1, etc directories describe
++		UBI devices (UBI device 0, 1, etc). They contain general UBI
++		device information and per UBI volume information (each UBI
++		device may have many UBI volumes)
++
++What:		/sys/class/ubi/ubiX/avail_eraseblocks
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Amount of available logical eraseblock. For example, one may
++		create a new UBI volume which has this amount of logical
++		eraseblocks.
++
++What:		/sys/class/ubi/ubiX/bad_peb_count
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Count of bad physical eraseblocks on the underlying MTD device.
++
++What:		/sys/class/ubi/ubiX/bgt_enabled
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Contains ASCII "0\n" if the UBI background thread is disabled,
++		and ASCII "1\n" if it is enabled.
++
++What:		/sys/class/ubi/ubiX/dev
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Major and minor numbers of the character device corresponding
++		to this UBI device (in <major>:<minor> format).
++
++What:		/sys/class/ubi/ubiX/eraseblock_size
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Maximum logical eraseblock size this UBI device may provide. UBI
++		volumes may have smaller logical eraseblock size because of their
++		alignment.
++
++What:		/sys/class/ubi/ubiX/max_ec
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Maximum physical eraseblock erase counter value.
++
++What:		/sys/class/ubi/ubiX/max_vol_count
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Maximum number of volumes which this UBI device may have.
++
++What:		/sys/class/ubi/ubiX/min_io_size
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Minimum input/output unit size. All the I/O may only be done
++		in fractions of the contained number.
++
++What:		/sys/class/ubi/ubiX/mtd_num
++Date:		January 2008
++KernelVersion:	2.6.25
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Number of the underlying MTD device.
++
++What:		/sys/class/ubi/ubiX/reserved_for_bad
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Number of physical eraseblocks reserved for bad block handling.
++
++What:		/sys/class/ubi/ubiX/total_eraseblocks
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Total number of good (not marked as bad) physical eraseblocks on
++		the underlying MTD device.
++
++What:		/sys/class/ubi/ubiX/volumes_count
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Count of volumes on this UBI device.
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		The /sys/class/ubi/ubiX/ubiX_0/, /sys/class/ubi/ubiX/ubiX_1/,
++		etc directories describe UBI volumes on UBI device X (volumes
++		0, 1, etc).
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/alignment
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Volume alignment - the value the logical eraseblock size of
++		this volume has to be aligned on. For example, 2048 means that
++		logical eraseblock size is multiple of 2048. In other words,
++		volume logical eraseblock size is UBI device logical eraseblock
++		size aligned to the alignment value.
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/corrupted
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Contains ASCII "0\n" if the UBI volume is OK, and ASCII "1\n"
++		if it is corrupted (e.g., due to an interrupted volume update).
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/data_bytes
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		The amount of data this volume contains. This value makes sense
++		only for static volumes, and for dynamic volume it equivalent
++		to the total volume size in bytes.
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/dev
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Major and minor numbers of the character device corresponding
++		to this UBI volume (in <major>:<minor> format).
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/name
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Volume name.
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/reserved_ebs
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Count of physical eraseblock reserved for this volume.
++		Equivalent to the volume size in logical eraseblocks.
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/type
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Volume type. Contains ASCII "dynamic\n" for dynamic volumes and
++		"static\n" for static volumes.
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/upd_marker
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Contains ASCII "0\n" if the update marker is not set for this
++		volume, and "1\n" if it is set. The update marker is set when
++		volume update starts, and cleaned when it ends. So the presence
++		of the update marker indicates that the volume is being updated
++		at the moment of the update was interrupted. The later may be
++		checked using the "corrupted" sysfs file.
++
++What:		/sys/class/ubi/ubiX/ubiX_Y/usable_eb_size
++Date:		July 2006
++KernelVersion:	2.6.22
++Contact:	Artem Bityutskiy <dedekind@infradead.org>
++Description:
++		Logical eraseblock size of this volume. Equivalent to logical
++		eraseblock size of the device aligned on the volume alignment
++		value.
+diff --exclude=.git -urN linux-2.6.25.6/Documentation/filesystems/ubifs.txt avr32-2.6/Documentation/filesystems/ubifs.txt
+--- linux-2.6.25.6/Documentation/filesystems/ubifs.txt	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/Documentation/filesystems/ubifs.txt	2008-06-12 15:09:38.451815572 +0200
+@@ -0,0 +1,163 @@
++Introduction
++=============
++
++UBIFS file-system stands for UBI File System. UBI stands for "Unsorted
++Block Images". UBIFS is a flash file system, which means it is designed
++to work with flash devices. It is important to understand, that UBIFS
++is completely different to any traditional file-system in Linux, like
++Ext2, XFS, JFS, etc. UBIFS represents a separate class of file-systems
++which work with MTD devices, not block devices. The other Linux
++file-system of this class is JFFS2.
++
++To make it more clear, here is a small comparison of MTD devices and
++block devices.
++
++1 MTD devices represent flash devices and they consist of eraseblocks of
++  rather large size, typically about 128KiB. Block devices consist of
++  small blocks, typically 512 bytes.
++2 MTD devices support 3 main operations - read from some offset within an
++  eraseblock, write to some offset within an eraseblock, and erase a whole
++  eraseblock. Block  devices support 2 main operations - read a whole
++  block and write a whole block.
++3 The whole eraseblock has to be erased before it becomes possible to
++  re-write its contents. Blocks may be just re-written.
++4 Eraseblocks become worn out after some number of erase cycles -
++  typically 100K-1G for SLC NAND and NOR flashes, and 1K-10K for MLC
++  NAND flashes. Blocks do not have the wear-out property.
++5 Eraseblocks may become bad (only on NAND flashes) and software should
++  deal with this. Blocks on hard drives typically do not become bad,
++  because hardware has mechanisms to substitute bad blocks, at least in
++  modern LBA disks.
++
++It should be quite obvious why UBIFS is very different to traditional
++file-systems.
++
++UBIFS works on top of UBI. UBI is a separate software layer which may be
++found in drivers/mtd/ubi. UBI is basically a volume management and
++wear-leveling layer. It provides so called UBI volumes which is a higher
++level abstraction than a MTD device. The programming model of UBI devices
++is very similar to MTD devices - they still consist of large eraseblocks,
++they have read/write/erase operations, but UBI devices are devoid of
++limitations like wear and bad blocks (items 4 and 5 in the above list).
++
++In a sense, UBIFS is a next generation of JFFS2 file-system, but it is
++very different and incompatible to JFFS2. The following are the main
++differences.
++
++* JFFS2 works on top of MTD devices, UBIFS depends on UBI and works on
++  top of UBI volumes.
++* JFFS2 does not have on-media index and has to build it while mounting,
++  which requires full media scan. UBIFS maintains the FS indexing
++  information on the flash media and does not require full media scan,
++  so it mounts many times faster than JFFS2.
++* JFFS2 is a write-through file-system, while UBIFS supports write-back,
++  which makes UBIFS much faster on writes.
++
++Similarly to JFFS2, UBIFS supports on-the-flight compression which makes
++it possible to fit quite a lot of data to the flash.
++
++Similarly to JFFS2, UBIFS is tolerant of unclean reboots and power-cuts.
++It does not need stuff like ckfs.ext2. UBIFS automatically replays its
++journal and recovers from crashes, ensuring that the on-flash data
++structures are consistent.
++
++UBIFS scales logarithmically (most of the data structures it uses are
++trees), so the mount time and memory consumption do not linearly depend
++on the flash size, like in case of JFFS2. This is because UBIFS
++maintains the FS index on the flash media. However, UBIFS depends on
++UBI, which scales linearly. So overall UBI/UBIFS stack scales linearly.
++Nevertheless, UBI/UBIFS scales considerably better than JFFS2.
++
++The authors of UBIFS believe, that it is possible to develop UBI2 which
++would scale logarithmically as well. UBI2 would support the same API as UBI,
++but it would be binary incompatible to UBI. So UBIFS would not need to be
++changed to use UBI2
++
++
++Mount options
++=============
++
++(*) == default.
++
++norm_unmount (*)	commit on unmount; the journal is committed
++			when the file-system is unmounted so that the
++			next mount does not have to replay the journal
++			and it becomes very fast;
++fast_unmount		do not commit on unmount; this option makes
++			unmount faster, but the next mount slower
++			because of the need to replay the journal.
++
++
++Quick usage instructions
++========================
++
++The UBI volume to mount is specified using "ubiX_Y" or "ubiX:NAME" syntax,
++where "X" is UBI device number, "Y" is UBI volume number, and "NAME" is
++UBI volume name.
++
++Mount volume 0 on UBI device 0 to /mnt/ubifs:
++$ mount -t ubifs ubi0_0 /mnt/ubifs
++
++Mount "rootfs" volume of UBI device 0 to /mnt/ubifs ("rootfs" is volume
++name):
++$ mount -t ubifs ubi0:rootfs /mnt/ubifs
++
++The following is an example of the kernel boot arguments to attach mtd0
++to UBI and mount volume "rootfs":
++ubi.mtd=0 root=ubi0:rootfs rootfstype=ubifs
++
++
++Module Parameters for Debugging
++===============================
++
++When UBIFS has been compiled with debugging enabled, there are 3 module
++parameters that are available to control aspects of testing and debugging.
++The parameters are unsigned integers where each bit controls an option.
++The parameters are:
++
++debug_msgs	Selects which debug messages to display, as follows:
++
++		Message Type				Flag value
++
++		General messages			1
++		Journal messages			2
++		Mount messages				4
++		Commit messages				8
++		LEB search messages			16
++		Budgeting messages			32
++		Garbage collection messages		64
++		Tree Node Cache (TNC) messages		128
++		LEB properties (lprops) messages	256
++		Input/output messages			512
++		Log messages				1024
++		Scan messages				2048
++		Recovery messages			4096
++
++debug_chks	Selects extra checks that UBIFS can do while running:
++
++		Check					Flag value
++
++		General checks				1
++		Check Tree Node Cache (TNC)		2
++		Check indexing tree size		4
++		Check orphan area			8
++		Check old indexing tree			16
++		Check LEB properties (lprops)		32
++
++debug_tsts	Selects a mode of testing, as follows:
++
++		Test mode				Flag value
++
++		Force in-the-gaps method		2
++		Failure mode for recovery testing	4
++
++For example, set debug_msgs to 5 to display General messages and Mount
++messages.
++
++
++References
++==========
++
++UBIFS documentation and FAQ/HOWTO at the MTD web site:
++http://www.linux-mtd.infradead.org/doc/ubifs.html
++http://www.linux-mtd.infradead.org/faq/ubifs.html
+diff --exclude=.git -urN linux-2.6.25.6/drivers/char/Kconfig avr32-2.6/drivers/char/Kconfig
+--- linux-2.6.25.6/drivers/char/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/char/Kconfig	2008-06-12 15:09:40.071816052 +0200
+@@ -706,7 +706,7 @@
+ 
+ config RTC
+ 	tristate "Enhanced Real Time Clock Support"
+-	depends on !PPC && !PARISC && !IA64 && !M68K && !SPARC && !FRV && !ARM && !SUPERH && !S390
++	depends on !PPC && !PARISC && !IA64 && !M68K && !SPARC && !FRV && !ARM && !SUPERH && !S390 && !AVR32
+ 	---help---
+ 	  If you say Y here and create a character special file /dev/rtc with
+ 	  major number 10 and minor number 135 using mknod ("man mknod"), you
+@@ -776,7 +776,7 @@
+ 
+ config GEN_RTC
+ 	tristate "Generic /dev/rtc emulation"
+-	depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH
++	depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH && !AVR32
+ 	---help---
+ 	  If you say Y here and create a character special file /dev/rtc with
+ 	  major number 10 and minor number 135 using mknod ("man mknod"), you
+diff --exclude=.git -urN linux-2.6.25.6/drivers/char/keyboard.c avr32-2.6/drivers/char/keyboard.c
+--- linux-2.6.25.6/drivers/char/keyboard.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/char/keyboard.c	2008-06-12 15:09:40.243816452 +0200
+@@ -1033,7 +1033,8 @@
+ #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
+     defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
+     defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
+-    (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
++    (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\
++    defined(CONFIG_AVR32)
+ 
+ #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
+ 			((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
+diff --exclude=.git -urN linux-2.6.25.6/drivers/clocksource/Makefile avr32-2.6/drivers/clocksource/Makefile
+--- linux-2.6.25.6/drivers/clocksource/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/clocksource/Makefile	2008-06-12 15:03:58.475816394 +0200
 @@ -1,3 +1,4 @@
 +obj-$(CONFIG_ATMEL_TCB_CLKSRC)	+= tcb_clksrc.o
  obj-$(CONFIG_X86_CYCLONE_TIMER)	+= cyclone.o
  obj-$(CONFIG_X86_PM_TIMER)	+= acpi_pm.o
  obj-$(CONFIG_SCx200HR_TIMER)	+= scx200_hrt.o
---- /dev/null
-+++ b/drivers/clocksource/tcb_clksrc.c
-@@ -0,0 +1,305 @@
+diff --exclude=.git -urN linux-2.6.25.6/drivers/clocksource/tcb_clksrc.c avr32-2.6/drivers/clocksource/tcb_clksrc.c
+--- linux-2.6.25.6/drivers/clocksource/tcb_clksrc.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/clocksource/tcb_clksrc.c	2008-06-12 15:03:58.479814669 +0200
+@@ -0,0 +1,302 @@
 +#include <linux/init.h>
 +#include <linux/clocksource.h>
 +#include <linux/clockchips.h>
@@ -11964,10 +8427,8 @@
 +	.handler	= ch2_irq,
 +};
 +
-+static void __init setup_clkevents(struct atmel_tc *tc,
-+		struct clk *t0_clk, int clk32k_divisor_idx)
++static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
 +{
-+	struct platform_device *pdev = tc->pdev;
 +	struct clk *t2_clk = tc->clk[2];
 +	int irq = tc->irq[2];
 +
@@ -11989,8 +8450,7 @@
 +
 +#else /* !CONFIG_GENERIC_CLOCKEVENTS */
 +
-+static void __init setup_clkevents(struct atmel_tc *tc,
-+		struct clk *t0_clk, int clk32k_divisor_idx)
++static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
 +{
 +	/* NOTHING */
 +}
@@ -12004,7 +8464,7 @@
 +
 +	struct platform_device *pdev;
 +	struct atmel_tc *tc;
-+	struct clk *t0_clk, *t1_clk;
++	struct clk *t0_clk;
 +	u32 rate, divided_rate = 0;
 +	int best_divisor_idx = -1;
 +	int clk32k_divisor_idx = -1;
@@ -12082,13 +8542,14 @@
 +	clocksource_register(&clksrc);
 +
 +	/* channel 2:  periodic and oneshot timer support */
-+	setup_clkevents(tc, t0_clk, clk32k_divisor_idx);
++	setup_clkevents(tc, clk32k_divisor_idx);
 +
 +	return 0;
 +}
 +arch_initcall(tcb_clksrc_init);
---- /dev/null
-+++ b/drivers/i2c/busses/i2c-atmeltwi.c
+diff --exclude=.git -urN linux-2.6.25.6/drivers/i2c/busses/i2c-atmeltwi.c avr32-2.6/drivers/i2c/busses/i2c-atmeltwi.c
+--- linux-2.6.25.6/drivers/i2c/busses/i2c-atmeltwi.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/i2c/busses/i2c-atmeltwi.c	2008-06-12 15:09:40.391816588 +0200
 @@ -0,0 +1,436 @@
 +/*
 + * i2c Support for Atmel's Two-Wire Interface (TWI)
@@ -12526,8 +8987,9 @@
 +MODULE_AUTHOR("Espen Krangnes");
 +MODULE_DESCRIPTION("I2C driver for Atmel TWI");
 +MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/i2c/busses/i2c-atmeltwi.h
+diff --exclude=.git -urN linux-2.6.25.6/drivers/i2c/busses/i2c-atmeltwi.h avr32-2.6/drivers/i2c/busses/i2c-atmeltwi.h
+--- linux-2.6.25.6/drivers/i2c/busses/i2c-atmeltwi.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/i2c/busses/i2c-atmeltwi.h	2008-06-12 15:09:40.391816588 +0200
 @@ -0,0 +1,117 @@
 +/*
 + * Register definitions for the Atmel Two-Wire Interface
@@ -12646,8 +9108,9 @@
 +	__raw_writel((value), (port)->regs + TWI_##reg)
 +
 +#endif /* __ATMELTWI_H__ */
---- a/drivers/i2c/busses/Kconfig
-+++ b/drivers/i2c/busses/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/drivers/i2c/busses/Kconfig avr32-2.6/drivers/i2c/busses/Kconfig
+--- linux-2.6.25.6/drivers/i2c/busses/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/i2c/busses/Kconfig	2008-06-12 15:09:40.383816128 +0200
 @@ -88,6 +88,14 @@
  	  to support combined I2C messages.  Use the i2c-gpio driver
  	  unless your system can cope with those limitations.
@@ -12663,9 +9126,10 @@
  config I2C_AU1550
  	tristate "Au1550/Au1200 SMBus interface"
  	depends on SOC_AU1550 || SOC_AU1200
---- a/drivers/i2c/busses/Makefile
-+++ b/drivers/i2c/busses/Makefile
-@@ -53,6 +53,7 @@
+diff --exclude=.git -urN linux-2.6.25.6/drivers/i2c/busses/Makefile avr32-2.6/drivers/i2c/busses/Makefile
+--- linux-2.6.25.6/drivers/i2c/busses/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/i2c/busses/Makefile	2008-06-12 15:09:40.383816128 +0200
+@@ -52,6 +52,7 @@
  obj-$(CONFIG_I2C_VOODOO3)	+= i2c-voodoo3.o
  obj-$(CONFIG_SCx200_ACB)	+= scx200_acb.o
  obj-$(CONFIG_SCx200_I2C)	+= scx200_i2c.o
@@ -12673,8 +9137,9 @@
  
  ifeq ($(CONFIG_I2C_DEBUG_BUS),y)
  EXTRA_CFLAGS += -DDEBUG
---- /dev/null
-+++ b/drivers/input/serio/at32psif.c
+diff --exclude=.git -urN linux-2.6.25.6/drivers/input/serio/at32psif.c avr32-2.6/drivers/input/serio/at32psif.c
+--- linux-2.6.25.6/drivers/input/serio/at32psif.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/input/serio/at32psif.c	2008-06-12 15:09:40.619816021 +0200
 @@ -0,0 +1,351 @@
 +/*
 + * Copyright (C) 2007 Atmel Corporation
@@ -13027,8 +9492,9 @@
 +MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
 +MODULE_DESCRIPTION("Atmel AVR32 PSIF PS/2 driver");
 +MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/input/serio/at32psif.h
+diff --exclude=.git -urN linux-2.6.25.6/drivers/input/serio/at32psif.h avr32-2.6/drivers/input/serio/at32psif.h
+--- linux-2.6.25.6/drivers/input/serio/at32psif.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/input/serio/at32psif.h	2008-06-12 15:09:40.619816021 +0200
 @@ -0,0 +1,82 @@
 +/*
 + * Copyright (C) 2007 Atmel Corporation
@@ -13112,8 +9578,9 @@
 +	__raw_writel((value), (port)->regs + PSIF_##reg)
 +
 +#endif /* _AT32PSIF_H */
---- a/drivers/input/serio/Kconfig
-+++ b/drivers/input/serio/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/drivers/input/serio/Kconfig avr32-2.6/drivers/input/serio/Kconfig
+--- linux-2.6.25.6/drivers/input/serio/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/input/serio/Kconfig	2008-06-12 15:09:40.615815791 +0200
 @@ -88,6 +88,17 @@
  	  To compile this driver as a module, choose M here: the
  	  module will be called rpckbd.
@@ -13132,8 +9599,9 @@
  config SERIO_AMBAKMI
  	tristate "AMBA KMI keyboard controller"
  	depends on ARM_AMBA
---- a/drivers/input/serio/Makefile
-+++ b/drivers/input/serio/Makefile
+diff --exclude=.git -urN linux-2.6.25.6/drivers/input/serio/Makefile avr32-2.6/drivers/input/serio/Makefile
+--- linux-2.6.25.6/drivers/input/serio/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/input/serio/Makefile	2008-06-12 15:03:58.919815686 +0200
 @@ -12,6 +12,7 @@
  obj-$(CONFIG_SERIO_RPCKBD)	+= rpckbd.o
  obj-$(CONFIG_SERIO_SA1111)	+= sa1111ps2.o
@@ -13142,604 +9610,9 @@
  obj-$(CONFIG_SERIO_Q40KBD)	+= q40kbd.o
  obj-$(CONFIG_SERIO_GSCPS2)	+= gscps2.o
  obj-$(CONFIG_HP_SDC)		+= hp_sdc.o
---- a/drivers/leds/Kconfig
-+++ b/drivers/leds/Kconfig
-@@ -18,6 +18,13 @@
- 
- comment "LED drivers"
- 
-+config LEDS_ATMEL_PWM
-+	tristate "LED Support using Atmel PWM outputs"
-+	depends on LEDS_CLASS && ATMEL_PWM
-+	help
-+	  This option enables support for LEDs driven using outputs
-+	  of the dedicated PWM controller found on newer Atmel SOCs.
-+
- config LEDS_CORGI
- 	tristate "LED Support for the Sharp SL-C7x0 series"
- 	depends on LEDS_CLASS && PXA_SHARP_C7xx
---- /dev/null
-+++ b/drivers/leds/leds-atmel-pwm.c
-@@ -0,0 +1,155 @@
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+#include <linux/leds.h>
-+#include <linux/io.h>
-+#include <linux/atmel_pwm.h>
-+
-+
-+struct pwmled {
-+	struct led_classdev	cdev;
-+	struct pwm_channel	pwmc;
-+	struct gpio_led		*desc;
-+	u32			mult;
-+	u8			active_low;
-+};
-+
-+
-+/*
-+ * For simplicity, we use "brightness" as if it were a linear function
-+ * of PWM duty cycle.  However, a logarithmic function of duty cycle is
-+ * probably a better match for perceived brightness: two is half as bright
-+ * as four, four is half as bright as eight, etc
-+ */
-+static void pwmled_brightness(struct led_classdev *cdev, enum led_brightness b)
-+{
-+	struct pwmled		 *led;
-+
-+	/* update the duty cycle for the *next* period */
-+	led = container_of(cdev, struct pwmled, cdev);
-+	pwm_channel_writel(&led->pwmc, PWM_CUPD, led->mult * (unsigned) b);
-+}
-+
-+/*
-+ * NOTE:  we reuse the platform_data structure of GPIO leds,
-+ * but repurpose its "gpio" number as a PWM channel number.
-+ */
-+static int __init pwmled_probe(struct platform_device *pdev)
-+{
-+	const struct gpio_led_platform_data	*pdata;
-+	struct pwmled				*leds;
-+	unsigned				i;
-+	int					status;
-+
-+	pdata = pdev->dev.platform_data;
-+	if (!pdata || pdata->num_leds < 1)
-+		return -ENODEV;
-+
-+	leds = kcalloc(pdata->num_leds, sizeof(*leds), GFP_KERNEL);
-+	if (!leds)
-+		return -ENOMEM;
-+
-+	for (i = 0; i < pdata->num_leds; i++) {
-+		struct pwmled		*led = leds + i;
-+		const struct gpio_led	*dat = pdata->leds + i;
-+		u32			tmp;
-+
-+		led->cdev.name = dat->name;
-+		led->cdev.brightness = LED_OFF;
-+		led->cdev.brightness_set = pwmled_brightness;
-+		led->cdev.default_trigger = dat->default_trigger;
-+
-+		led->active_low = dat->active_low;
-+
-+		status = pwm_channel_alloc(dat->gpio, &led->pwmc);
-+		if (status < 0)
-+			goto err;
-+
-+		/*
-+		 * Prescale clock by 2^x, so PWM counts in low MHz.
-+		 * Start each cycle with the LED active, so increasing
-+		 * the duty cycle gives us more time on (== brighter).
-+		 */
-+		tmp = 5;
-+		if (!led->active_low)
-+			tmp |= PWM_CPR_CPOL;
-+		pwm_channel_writel(&led->pwmc, PWM_CMR, tmp);
-+
-+		/*
-+		 * Pick a period so PWM cycles at 100+ Hz; and a multiplier
-+		 * for scaling duty cycle:  brightness * mult.
-+		 */
-+		tmp = (led->pwmc.mck / (1 << 5)) / 100;
-+		tmp /= 255;
-+		led->mult = tmp;
-+		pwm_channel_writel(&led->pwmc, PWM_CDTY,
-+				led->cdev.brightness * 255);
-+		pwm_channel_writel(&led->pwmc, PWM_CPRD,
-+				LED_FULL * tmp);
-+
-+		pwm_channel_enable(&led->pwmc);
-+
-+		/* Hand it over to the LED framework */
-+		status = led_classdev_register(&pdev->dev, &led->cdev);
-+		if (status < 0) {
-+			pwm_channel_free(&led->pwmc);
-+			goto err;
-+		}
-+	}
-+
-+	platform_set_drvdata(pdev, leds);
-+	return 0;
-+
-+err:
-+	while (i-- > 0) {
-+		led_classdev_unregister(&leds[i].cdev);
-+		pwm_channel_free(&leds[i].pwmc);
-+	}
-+	kfree(leds);
-+
-+	return status;
-+}
-+
-+static int __exit pwmled_remove(struct platform_device *pdev)
-+{
-+	const struct gpio_led_platform_data	*pdata;
-+	struct pwmled				*leds;
-+	unsigned				i;
-+
-+	pdata = pdev->dev.platform_data;
-+	leds = platform_get_drvdata(pdev);
-+
-+	for (i = 0; i < pdata->num_leds; i++) {
-+		struct pwmled		*led = leds + i;
-+
-+		led_classdev_unregister(&led->cdev);
-+		pwm_channel_free(&led->pwmc);
-+	}
-+
-+	kfree(leds);
-+	platform_set_drvdata(pdev, NULL);
-+	return 0;
-+}
-+
-+static struct platform_driver pwmled_driver = {
-+	.driver = {
-+		.name =		"leds-atmel-pwm",
-+		.owner =	THIS_MODULE,
-+	},
-+	/* REVISIT add suspend() and resume() methods */
-+	.remove =	__exit_p(pwmled_remove),
-+};
-+
-+static int __init modinit(void)
-+{
-+	return platform_driver_probe(&pwmled_driver, pwmled_probe);
-+}
-+module_init(modinit);
-+
-+static void __exit modexit(void)
-+{
-+	platform_driver_unregister(&pwmled_driver);
-+}
-+module_exit(modexit);
-+
-+MODULE_DESCRIPTION("Driver for LEDs with PWM-controlled brightness");
-+MODULE_LICENSE("GPL");
---- a/drivers/leds/Makefile
-+++ b/drivers/leds/Makefile
-@@ -5,6 +5,7 @@
- obj-$(CONFIG_LEDS_TRIGGERS)		+= led-triggers.o
- 
- # LED Platform Drivers
-+obj-$(CONFIG_LEDS_ATMEL_PWM)		+= leds-atmel-pwm.o
- obj-$(CONFIG_LEDS_CORGI)		+= leds-corgi.o
- obj-$(CONFIG_LEDS_LOCOMO)		+= leds-locomo.o
- obj-$(CONFIG_LEDS_SPITZ)		+= leds-spitz.o
---- /dev/null
-+++ b/drivers/misc/atmel_pwm.c
-@@ -0,0 +1,409 @@
-+#include <linux/module.h>
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/io.h>
-+#include <linux/interrupt.h>
-+#include <linux/platform_device.h>
-+#include <linux/atmel_pwm.h>
-+
-+
-+/*
-+ * This is a simple driver for the PWM controller found in various newer
-+ * Atmel SOCs, including the AVR32 series and the AT91sam9263.
-+ *
-+ * Chips with current Linux ports have only 4 PWM channels, out of max 32.
-+ * AT32UC3A and AT32UC3B chips have 7 channels (but currently no Linux).
-+ * Docs are inconsistent about the width of the channel counter registers;
-+ * it's at least 16 bits, but several places say 20 bits.
-+ */
-+#define	PWM_NCHAN	4		/* max 32 */
-+
-+struct pwm {
-+	spinlock_t		lock;
-+	struct platform_device	*pdev;
-+	u32			mask;
-+	int			irq;
-+	void __iomem		*base;
-+	struct clk		*clk;
-+	struct pwm_channel	*channel[PWM_NCHAN];
-+	void			(*handler[PWM_NCHAN])(struct pwm_channel *);
-+};
-+
-+
-+/* global PWM controller registers */
-+#define PWM_MR		0x00
-+#define PWM_ENA		0x04
-+#define PWM_DIS		0x08
-+#define PWM_SR		0x0c
-+#define PWM_IER		0x10
-+#define PWM_IDR		0x14
-+#define PWM_IMR		0x18
-+#define PWM_ISR		0x1c
-+
-+static inline void pwm_writel(const struct pwm *p, unsigned offset, u32 val)
-+{
-+	__raw_writel(val, p->base + offset);
-+}
-+
-+static inline u32 pwm_readl(const struct pwm *p, unsigned offset)
-+{
-+	return __raw_readl(p->base + offset);
-+}
-+
-+static inline void __iomem *pwmc_regs(const struct pwm *p, int index)
-+{
-+	return p->base + 0x200 + index * 0x20;
-+}
-+
-+static struct pwm *pwm;
-+
-+static void pwm_dumpregs(struct pwm_channel *ch, char *tag)
-+{
-+	struct device	*dev = &pwm->pdev->dev;
-+
-+	dev_dbg(dev, "%s: mr %08x, sr %08x, imr %08x\n",
-+		tag,
-+		pwm_readl(pwm, PWM_MR),
-+		pwm_readl(pwm, PWM_SR),
-+		pwm_readl(pwm, PWM_IMR));
-+	dev_dbg(dev,
-+		"pwm ch%d - mr %08x, dty %u, prd %u, cnt %u\n",
-+		ch->index,
-+		pwm_channel_readl(ch, PWM_CMR),
-+		pwm_channel_readl(ch, PWM_CDTY),
-+		pwm_channel_readl(ch, PWM_CPRD),
-+		pwm_channel_readl(ch, PWM_CCNT));
-+}
-+
-+
-+/**
-+ * pwm_channel_alloc - allocate an unused PWM channel
-+ * @index: identifies the channel
-+ * @ch: structure to be initialized
-+ *
-+ * Drivers allocate PWM channels according to the board's wiring, and
-+ * matching board-specific setup code.  Returns zero or negative errno.
-+ */
-+int pwm_channel_alloc(int index, struct pwm_channel *ch)
-+{
-+	unsigned long	flags;
-+	int		status = 0;
-+
-+	/* insist on PWM init, with this signal pinned out */
-+	if (!pwm || !(pwm->mask & 1 << index))
-+		return -ENODEV;
-+
-+	if (index < 0 || index >= PWM_NCHAN || !ch)
-+		return -EINVAL;
-+	memset(ch, 0, sizeof *ch);
-+
-+	spin_lock_irqsave(&pwm->lock, flags);
-+	if (pwm->channel[index])
-+		status = -EBUSY;
-+	else {
-+		clk_enable(pwm->clk);
-+
-+		ch->regs = pwmc_regs(pwm, index);
-+		ch->index = index;
-+
-+		/* REVISIT: ap7000 seems to go 2x as fast as we expect!! */
-+		ch->mck = clk_get_rate(pwm->clk);
-+
-+		pwm->channel[index] = ch;
-+		pwm->handler[index] = NULL;
-+
-+		/* channel and irq are always disabled when we return */
-+		pwm_writel(pwm, PWM_DIS, 1 << index);
-+		pwm_writel(pwm, PWM_IDR, 1 << index);
-+	}
-+	spin_unlock_irqrestore(&pwm->lock, flags);
-+	return status;
-+}
-+EXPORT_SYMBOL(pwm_channel_alloc);
-+
-+static int pwmcheck(struct pwm_channel *ch)
-+{
-+	int		index;
-+
-+	if (!pwm)
-+		return -ENODEV;
-+	if (!ch)
-+		return -EINVAL;
-+	index = ch->index;
-+	if (index < 0 || index >= PWM_NCHAN || pwm->channel[index] != ch)
-+		return -EINVAL;
-+
-+	return index;
-+}
-+
-+/**
-+ * pwm_channel_free - release a previously allocated channel
-+ * @ch: the channel being released
-+ *
-+ * The channel is completely shut down (counter and IRQ disabled),
-+ * and made available for re-use.  Returns zero, or negative errno.
-+ */
-+int pwm_channel_free(struct pwm_channel *ch)
-+{
-+	unsigned long	flags;
-+	int		t;
-+
-+	spin_lock_irqsave(&pwm->lock, flags);
-+	t = pwmcheck(ch);
-+	if (t >= 0) {
-+		pwm->channel[t] = NULL;
-+		pwm->handler[t] = NULL;
-+
-+		/* channel and irq are always disabled when we return */
-+		pwm_writel(pwm, PWM_DIS, 1 << t);
-+		pwm_writel(pwm, PWM_IDR, 1 << t);
-+
-+		clk_disable(pwm->clk);
-+		t = 0;
-+	}
-+	spin_unlock_irqrestore(&pwm->lock, flags);
-+	return t;
-+}
-+EXPORT_SYMBOL(pwm_channel_free);
-+
-+int __pwm_channel_onoff(struct pwm_channel *ch, int enabled)
-+{
-+	unsigned long	flags;
-+	int		t;
-+
-+	/* OMITTED FUNCTIONALITY:  starting several channels in synch */
-+
-+	spin_lock_irqsave(&pwm->lock, flags);
-+	t = pwmcheck(ch);
-+	if (t >= 0) {
-+		pwm_writel(pwm, enabled ? PWM_ENA : PWM_DIS, 1 << t);
-+		t = 0;
-+		pwm_dumpregs(ch, enabled ? "enable" : "disable");
-+	}
-+	spin_unlock_irqrestore(&pwm->lock, flags);
-+
-+	return t;
-+}
-+EXPORT_SYMBOL(__pwm_channel_onoff);
-+
-+/**
-+ * pwm_clk_alloc - allocate and configure CLKA or CLKB
-+ * @prescale: from 0..10, the power of two used to divide MCK
-+ * @div: from 1..255, the linear divisor to use
-+ *
-+ * Returns PWM_CPR_CLKA, PWM_CPR_CLKB, or negative errno.  The allocated
-+ * clock will run with a period of (2^prescale * div) / MCK, or twice as
-+ * long if center aligned PWM output is used.  The clock must later be
-+ * deconfigured using pwm_clk_free().
-+ */
-+int pwm_clk_alloc(unsigned prescale, unsigned div)
-+{
-+	unsigned long	flags;
-+	u32		mr;
-+	u32		val = (prescale << 8) | div;
-+	int		ret = -EBUSY;
-+
-+	if (prescale >= 10 || div == 0 || div > 255)
-+		return -EINVAL;
-+
-+	spin_lock_irqsave(&pwm->lock, flags);
-+	mr = pwm_readl(pwm, PWM_MR);
-+	if ((mr & 0xffff) == 0) {
-+		mr |= val;
-+		ret = PWM_CPR_CLKA;
-+	}
-+	if ((mr & (0xffff << 16)) == 0) {
-+		mr |= val << 16;
-+		ret = PWM_CPR_CLKB;
-+	}
-+	if (ret > 0)
-+		pwm_writel(pwm, PWM_MR, mr);
-+	spin_unlock_irqrestore(&pwm->lock, flags);
-+	return ret;
-+}
-+EXPORT_SYMBOL(pwm_clk_alloc);
-+
-+/**
-+ * pwm_clk_free - deconfigure and release CLKA or CLKB
-+ *
-+ * Reverses the effect of pwm_clk_alloc().
-+ */
-+void pwm_clk_free(unsigned clk)
-+{
-+	unsigned long	flags;
-+	u32		mr;
-+
-+	spin_lock_irqsave(&pwm->lock, flags);
-+	mr = pwm_readl(pwm, PWM_MR);
-+	if (clk == PWM_CPR_CLKA)
-+		pwm_writel(pwm, PWM_MR, mr & ~(0xffff << 0));
-+	if (clk == PWM_CPR_CLKB)
-+		pwm_writel(pwm, PWM_MR, mr & ~(0xffff << 16));
-+	spin_unlock_irqrestore(&pwm->lock, flags);
-+}
-+EXPORT_SYMBOL(pwm_clk_free);
-+
-+/**
-+ * pwm_channel_handler - manage channel's IRQ handler
-+ * @ch: the channel
-+ * @handler: the handler to use, possibly NULL
-+ *
-+ * If the handler is non-null, the handler will be called after every
-+ * period of this PWM channel.  If the handler is null, this channel
-+ * won't generate an IRQ.
-+ */
-+int pwm_channel_handler(struct pwm_channel *ch,
-+		void (*handler)(struct pwm_channel *ch))
-+{
-+	unsigned long	flags;
-+	int		t;
-+
-+	spin_lock_irqsave(&pwm->lock, flags);
-+	t = pwmcheck(ch);
-+	if (t >= 0) {
-+		pwm->handler[t] = handler;
-+		pwm_writel(pwm, handler ? PWM_IER : PWM_IDR, 1 << t);
-+		t = 0;
-+	}
-+	spin_unlock_irqrestore(&pwm->lock, flags);
-+
-+	return t;
-+}
-+EXPORT_SYMBOL(pwm_channel_handler);
-+
-+static irqreturn_t pwm_irq(int id, void *_pwm)
-+{
-+	struct pwm	*p = _pwm;
-+	irqreturn_t	handled = IRQ_NONE;
-+	u32		irqstat;
-+	int		index;
-+
-+	spin_lock(&p->lock);
-+
-+	/* ack irqs, then handle them */
-+	irqstat = pwm_readl(pwm, PWM_ISR);
-+
-+	while (irqstat) {
-+		struct pwm_channel *ch;
-+		void (*handler)(struct pwm_channel *ch);
-+
-+		index = ffs(irqstat) - 1;
-+		irqstat &= ~(1 << index);
-+		ch = pwm->channel[index];
-+		handler = pwm->handler[index];
-+		if (handler && ch) {
-+			spin_unlock(&p->lock);
-+			handler(ch);
-+			spin_lock(&p->lock);
-+			handled = IRQ_HANDLED;
-+		}
-+	}
-+
-+	spin_unlock(&p->lock);
-+	return handled;
-+}
-+
-+static int __init pwm_probe(struct platform_device *pdev)
-+{
-+	struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	int irq = platform_get_irq(pdev, 0);
-+	u32 *mp = pdev->dev.platform_data;
-+	struct pwm *p;
-+	int status = -EIO;
-+
-+	if (pwm)
-+		return -EBUSY;
-+	if (!r || irq < 0 || !mp || !*mp)
-+		return -ENODEV;
-+	if (*mp & ~((1<<PWM_NCHAN)-1)) {
-+		dev_warn(&pdev->dev, "mask 0x%x ... more than %d channels\n",
-+			*mp, PWM_NCHAN);
-+		return -EINVAL;
-+	}
-+
-+	p = kzalloc(sizeof(*p), GFP_KERNEL);
-+	if (!p)
-+		return -ENOMEM;
-+
-+	spin_lock_init(&p->lock);
-+	p->pdev = pdev;
-+	p->mask = *mp;
-+	p->irq = irq;
-+	p->base = ioremap(r->start, r->end - r->start + 1);
-+	if (!p->base)
-+		goto fail;
-+	p->clk = clk_get(&pdev->dev, "mck");
-+	if (IS_ERR(p->clk)) {
-+		status = PTR_ERR(p->clk);
-+		p->clk = NULL;
-+		goto fail;
-+	}
-+
-+	status = request_irq(irq, pwm_irq, 0, pdev->name, p);
-+	if (status < 0)
-+		goto fail;
-+
-+	pwm = p;
-+	platform_set_drvdata(pdev, p);
-+
-+	return 0;
-+
-+fail:
-+	if (p->clk)
-+		clk_put(p->clk);
-+	if (p->base)
-+		iounmap(p->base);
-+
-+	kfree(p);
-+	return status;
-+}
-+
-+static int __exit pwm_remove(struct platform_device *pdev)
-+{
-+	struct pwm *p = platform_get_drvdata(pdev);
-+
-+	if (p != pwm)
-+		return -EINVAL;
-+
-+	clk_enable(pwm->clk);
-+	pwm_writel(pwm, PWM_DIS, (1 << PWM_NCHAN) - 1);
-+	pwm_writel(pwm, PWM_IDR, (1 << PWM_NCHAN) - 1);
-+	clk_disable(pwm->clk);
-+
-+	pwm = NULL;
-+
-+	free_irq(p->irq, p);
-+	clk_put(p->clk);
-+	iounmap(p->base);
-+	kfree(p);
-+
-+	return 0;
-+}
-+
-+static struct platform_driver atmel_pwm_driver = {
-+	.driver = {
-+		.name = "atmel_pwm",
-+		.owner = THIS_MODULE,
-+	},
-+	.remove = __exit_p(pwm_remove),
-+
-+	/* NOTE: PWM can keep running in AVR32 "idle" and "frozen" states;
-+	 * and all AT91sam9263 states, albeit at reduced clock rate if
-+	 * MCK becomes the slow clock (i.e. what Linux labels STR).
-+	 */
-+};
-+
-+static int __init pwm_init(void)
-+{
-+	return platform_driver_probe(&atmel_pwm_driver, pwm_probe);
-+}
-+module_init(pwm_init);
-+
-+static void __exit pwm_exit(void)
-+{
-+	platform_driver_unregister(&atmel_pwm_driver);
-+}
-+module_exit(pwm_exit);
-+
-+MODULE_DESCRIPTION("Driver for AT32/AT91 PWM module");
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/misc/atmel_tclib.c
+diff --exclude=.git -urN linux-2.6.25.6/drivers/misc/atmel_tclib.c avr32-2.6/drivers/misc/atmel_tclib.c
+--- linux-2.6.25.6/drivers/misc/atmel_tclib.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/misc/atmel_tclib.c	2008-06-12 15:03:59.515815344 +0200
 @@ -0,0 +1,161 @@
 +#include <linux/atmel_tc.h>
 +#include <linux/clk.h>
@@ -13902,21 +9775,13 @@
 +	return platform_driver_probe(&tc_driver, tc_probe);
 +}
 +arch_initcall(tc_init);
---- a/drivers/misc/Kconfig
-+++ b/drivers/misc/Kconfig
-@@ -13,6 +13,48 @@
- 
- if MISC_DEVICES
+diff --exclude=.git -urN linux-2.6.25.6/drivers/misc/Kconfig avr32-2.6/drivers/misc/Kconfig
+--- linux-2.6.25.6/drivers/misc/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/misc/Kconfig	2008-06-12 15:09:41.067816939 +0200
+@@ -22,6 +22,39 @@
+ 	  purposes including software controlled power-efficent backlights
+ 	  on LCD displays, motor control, and waveform generation.
  
-+config ATMEL_PWM
-+	tristate "Atmel AT32/AT91 PWM support"
-+	depends on AVR32 || ARCH_AT91
-+	help
-+	  This option enables device driver support for the PWM channels
-+	  on certain Atmel prcoessors.  Pulse Width Modulation is used for
-+	  purposes including software controlled power-efficent backlights
-+	  on LCD displays, motor control, and waveform generation.
-+
 +config ATMEL_TCLIB
 +	bool "Atmel AT32/AT91 Timer/Counter Library"
 +	depends on (AVR32 || ARCH_AT91)
@@ -13953,20 +9818,20 @@
  config IBM_ASM
  	tristate "Device driver for IBM RSA service processor"
  	depends on X86 && PCI && INPUT && EXPERIMENTAL
---- a/drivers/misc/Makefile
-+++ b/drivers/misc/Makefile
-@@ -7,7 +7,9 @@
- obj-$(CONFIG_HDPU_FEATURES)	+= hdpuftrs/
- obj-$(CONFIG_MSI_LAPTOP)     += msi-laptop.o
+diff --exclude=.git -urN linux-2.6.25.6/drivers/misc/Makefile avr32-2.6/drivers/misc/Makefile
+--- linux-2.6.25.6/drivers/misc/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/misc/Makefile	2008-06-12 15:09:41.067816939 +0200
+@@ -10,6 +10,7 @@
  obj-$(CONFIG_ASUS_LAPTOP)     += asus-laptop.o
-+obj-$(CONFIG_ATMEL_PWM)		+= atmel_pwm.o
+ obj-$(CONFIG_ATMEL_PWM)		+= atmel_pwm.o
  obj-$(CONFIG_ATMEL_SSC)		+= atmel-ssc.o
 +obj-$(CONFIG_ATMEL_TCLIB)	+= atmel_tclib.o
+ obj-$(CONFIG_TC1100_WMI)	+= tc1100-wmi.o
  obj-$(CONFIG_LKDTM)		+= lkdtm.o
  obj-$(CONFIG_TIFM_CORE)       	+= tifm_core.o
- obj-$(CONFIG_TIFM_7XX1)       	+= tifm_7xx1.o
---- /dev/null
-+++ b/drivers/mmc/host/atmel-mci.c
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mmc/host/atmel-mci.c avr32-2.6/drivers/mmc/host/atmel-mci.c
+--- linux-2.6.25.6/drivers/mmc/host/atmel-mci.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mmc/host/atmel-mci.c	2008-06-12 15:09:41.083816184 +0200
 @@ -0,0 +1,1220 @@
 +/*
 + * Atmel MultiMedia Card Interface driver
@@ -15188,8 +11053,9 @@
 +
 +MODULE_DESCRIPTION("Atmel Multimedia Card Interface driver");
 +MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/drivers/mmc/host/atmel-mci.h
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mmc/host/atmel-mci.h avr32-2.6/drivers/mmc/host/atmel-mci.h
+--- linux-2.6.25.6/drivers/mmc/host/atmel-mci.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mmc/host/atmel-mci.h	2008-06-12 15:09:41.083816184 +0200
 @@ -0,0 +1,192 @@
 +/*
 + * Atmel MultiMedia Card Interface driver
@@ -15383,8 +11249,9 @@
 +	__raw_writel((value), (port)->regs + MCI_##reg)
 +
 +#endif /* __DRIVERS_MMC_ATMEL_MCI_H__ */
---- a/drivers/mmc/host/Kconfig
-+++ b/drivers/mmc/host/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mmc/host/Kconfig avr32-2.6/drivers/mmc/host/Kconfig
+--- linux-2.6.25.6/drivers/mmc/host/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mmc/host/Kconfig	2008-06-12 15:09:41.083816184 +0200
 @@ -91,6 +91,16 @@
  
  	  If unsure, say N.
@@ -15402,8 +11269,9 @@
  config MMC_IMX
  	tristate "Motorola i.MX Multimedia Card Interface support"
  	depends on ARCH_IMX
---- a/drivers/mmc/host/Makefile
-+++ b/drivers/mmc/host/Makefile
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mmc/host/Makefile avr32-2.6/drivers/mmc/host/Makefile
+--- linux-2.6.25.6/drivers/mmc/host/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mmc/host/Makefile	2008-06-12 15:09:41.083816184 +0200
 @@ -15,6 +15,7 @@
  obj-$(CONFIG_MMC_AU1X)		+= au1xmmc.o
  obj-$(CONFIG_MMC_OMAP)		+= omap.o
@@ -15412,103 +11280,2352 @@
  obj-$(CONFIG_MMC_TIFM_SD)	+= tifm_sd.o
  obj-$(CONFIG_MMC_SPI)		+= mmc_spi.o
  
---- a/drivers/mtd/chips/cfi_cmdset_0001.c
-+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
-@@ -50,6 +50,7 @@
- #define I82802AC	0x00ac
- #define MANUFACTURER_ST         0x0020
- #define M50LPW080       0x002F
-+#define AT49BV640D	0x02de
- 
- static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
- static int cfi_intelext_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
-@@ -157,6 +158,47 @@
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/at91_nand.c avr32-2.6/drivers/mtd/nand/at91_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/at91_nand.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/at91_nand.c	1970-01-01 01:00:00.000000000 +0100
+@@ -1,236 +0,0 @@
+-/*
+- * drivers/mtd/nand/at91_nand.c
+- *
+- *  Copyright (C) 2003 Rick Bronson
+- *
+- *  Derived from drivers/mtd/nand/autcpu12.c
+- *	 Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
+- *
+- *  Derived from drivers/mtd/spia.c
+- *	 Copyright (C) 2000 Steven J. Hill (sjhill@cotw.com)
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 as
+- * published by the Free Software Foundation.
+- *
+- */
+-
+-#include <linux/slab.h>
+-#include <linux/module.h>
+-#include <linux/platform_device.h>
+-#include <linux/mtd/mtd.h>
+-#include <linux/mtd/nand.h>
+-#include <linux/mtd/partitions.h>
+-
+-#include <asm/io.h>
+-#include <asm/sizes.h>
+-
+-#include <asm/hardware.h>
+-#include <asm/arch/board.h>
+-#include <asm/arch/gpio.h>
+-
+-struct at91_nand_host {
+-	struct nand_chip	nand_chip;
+-	struct mtd_info		mtd;
+-	void __iomem		*io_base;
+-	struct at91_nand_data	*board;
+-};
+-
+-/*
+- * Hardware specific access to control-lines
+- */
+-static void at91_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+-{
+-	struct nand_chip *nand_chip = mtd->priv;
+-	struct at91_nand_host *host = nand_chip->priv;
+-
+-	if (cmd == NAND_CMD_NONE)
+-		return;
+-
+-	if (ctrl & NAND_CLE)
+-		writeb(cmd, host->io_base + (1 << host->board->cle));
+-	else
+-		writeb(cmd, host->io_base + (1 << host->board->ale));
+-}
+-
+-/*
+- * Read the Device Ready pin.
+- */
+-static int at91_nand_device_ready(struct mtd_info *mtd)
+-{
+-	struct nand_chip *nand_chip = mtd->priv;
+-	struct at91_nand_host *host = nand_chip->priv;
+-
+-	return at91_get_gpio_value(host->board->rdy_pin);
+-}
+-
+-/*
+- * Enable NAND.
+- */
+-static void at91_nand_enable(struct at91_nand_host *host)
+-{
+-	if (host->board->enable_pin)
+-		at91_set_gpio_value(host->board->enable_pin, 0);
+-}
+-
+-/*
+- * Disable NAND.
+- */
+-static void at91_nand_disable(struct at91_nand_host *host)
+-{
+-	if (host->board->enable_pin)
+-		at91_set_gpio_value(host->board->enable_pin, 1);
+-}
+-
+-#ifdef CONFIG_MTD_PARTITIONS
+-const char *part_probes[] = { "cmdlinepart", NULL };
+-#endif
+-
+-/*
+- * Probe for the NAND device.
+- */
+-static int __init at91_nand_probe(struct platform_device *pdev)
+-{
+-	struct at91_nand_host *host;
+-	struct mtd_info *mtd;
+-	struct nand_chip *nand_chip;
+-	int res;
+-
+-#ifdef CONFIG_MTD_PARTITIONS
+-	struct mtd_partition *partitions = NULL;
+-	int num_partitions = 0;
+-#endif
+-
+-	/* Allocate memory for the device structure (and zero it) */
+-	host = kzalloc(sizeof(struct at91_nand_host), GFP_KERNEL);
+-	if (!host) {
+-		printk(KERN_ERR "at91_nand: failed to allocate device structure.\n");
+-		return -ENOMEM;
+-	}
+-
+-	host->io_base = ioremap(pdev->resource[0].start,
+-				pdev->resource[0].end - pdev->resource[0].start + 1);
+-	if (host->io_base == NULL) {
+-		printk(KERN_ERR "at91_nand: ioremap failed\n");
+-		kfree(host);
+-		return -EIO;
+-	}
+-
+-	mtd = &host->mtd;
+-	nand_chip = &host->nand_chip;
+-	host->board = pdev->dev.platform_data;
+-
+-	nand_chip->priv = host;		/* link the private data structures */
+-	mtd->priv = nand_chip;
+-	mtd->owner = THIS_MODULE;
+-
+-	/* Set address of NAND IO lines */
+-	nand_chip->IO_ADDR_R = host->io_base;
+-	nand_chip->IO_ADDR_W = host->io_base;
+-	nand_chip->cmd_ctrl = at91_nand_cmd_ctrl;
+-
+-	if (host->board->rdy_pin)
+-		nand_chip->dev_ready = at91_nand_device_ready;
+-
+-	nand_chip->ecc.mode = NAND_ECC_SOFT;	/* enable ECC */
+-	nand_chip->chip_delay = 20;		/* 20us command delay time */
+-
+-	if (host->board->bus_width_16)		/* 16-bit bus width */
+-		nand_chip->options |= NAND_BUSWIDTH_16;
+-
+-	platform_set_drvdata(pdev, host);
+-	at91_nand_enable(host);
+-
+-	if (host->board->det_pin) {
+-		if (at91_get_gpio_value(host->board->det_pin)) {
+-			printk ("No SmartMedia card inserted.\n");
+-			res = ENXIO;
+-			goto out;
+-		}
+-	}
+-
+-	/* Scan to find existance of the device */
+-	if (nand_scan(mtd, 1)) {
+-		res = -ENXIO;
+-		goto out;
+-	}
+-
+-#ifdef CONFIG_MTD_PARTITIONS
+-#ifdef CONFIG_MTD_CMDLINE_PARTS
+-	mtd->name = "at91_nand";
+-	num_partitions = parse_mtd_partitions(mtd, part_probes,
+-					      &partitions, 0);
+-#endif
+-	if (num_partitions <= 0 && host->board->partition_info)
+-		partitions = host->board->partition_info(mtd->size,
+-							 &num_partitions);
+-
+-	if ((!partitions) || (num_partitions == 0)) {
+-		printk(KERN_ERR "at91_nand: No parititions defined, or unsupported device.\n");
+-		res = ENXIO;
+-		goto release;
+-	}
+-
+-	res = add_mtd_partitions(mtd, partitions, num_partitions);
+-#else
+-	res = add_mtd_device(mtd);
+-#endif
+-
+-	if (!res)
+-		return res;
+-
+-release:
+-	nand_release(mtd);
+-out:
+-	at91_nand_disable(host);
+-	platform_set_drvdata(pdev, NULL);
+-	iounmap(host->io_base);
+-	kfree(host);
+-	return res;
+-}
+-
+-/*
+- * Remove a NAND device.
+- */
+-static int __devexit at91_nand_remove(struct platform_device *pdev)
+-{
+-	struct at91_nand_host *host = platform_get_drvdata(pdev);
+-	struct mtd_info *mtd = &host->mtd;
+-
+-	nand_release(mtd);
+-
+-	at91_nand_disable(host);
+-
+-	iounmap(host->io_base);
+-	kfree(host);
+-
+-	return 0;
+-}
+-
+-static struct platform_driver at91_nand_driver = {
+-	.probe		= at91_nand_probe,
+-	.remove		= at91_nand_remove,
+-	.driver		= {
+-		.name	= "at91_nand",
+-		.owner	= THIS_MODULE,
+-	},
+-};
+-
+-static int __init at91_nand_init(void)
+-{
+-	return platform_driver_register(&at91_nand_driver);
+-}
+-
+-
+-static void __exit at91_nand_exit(void)
+-{
+-	platform_driver_unregister(&at91_nand_driver);
+-}
+-
+-
+-module_init(at91_nand_init);
+-module_exit(at91_nand_exit);
+-
+-MODULE_LICENSE("GPL");
+-MODULE_AUTHOR("Rick Bronson");
+-MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91RM9200");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/atmel_nand.c avr32-2.6/drivers/mtd/nand/atmel_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/atmel_nand.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mtd/nand/atmel_nand.c	2008-06-12 15:09:41.107815889 +0200
+@@ -0,0 +1,650 @@
++/*
++ *  Copyright (C) 2003 Rick Bronson
++ *
++ *  Derived from drivers/mtd/nand/autcpu12.c
++ *	 Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
++ *
++ *  Derived from drivers/mtd/spia.c
++ *	 Copyright (C) 2000 Steven J. Hill (sjhill@cotw.com)
++ *
++ *
++ *  Add Hardware ECC support for AT91SAM9260 / AT91SAM9263
++ *     Richard Genoud (richard.genoud@gmail.com), Adeneo Copyright (C) 2007
++ *
++ *     Derived from Das U-Boot source code
++ *     		(u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c)
++ *     (C) Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas
++ *
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ */
++
++#include <linux/slab.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/nand.h>
++#include <linux/mtd/partitions.h>
++
++#include <linux/gpio.h>
++#include <linux/io.h>
++
++#include <asm/arch/board.h>
++#include <asm/arch/cpu.h>
++
++#ifdef CONFIG_MTD_NAND_ATMEL_ECC_HW
++#define hard_ecc	1
++#else
++#define hard_ecc	0
++#endif
++
++#ifdef CONFIG_MTD_NAND_ATMEL_ECC_NONE
++#define no_ecc		1
++#else
++#define no_ecc		0
++#endif
++
++/* Register access macros */
++#define ecc_readl(add, reg)				\
++	__raw_readl(add + ATMEL_ECC_##reg)
++#define ecc_writel(add, reg, value)			\
++	__raw_writel((value), add + ATMEL_ECC_##reg)
++
++#include "atmel_nand_ecc.h"	/* Hardware ECC registers */
++
++/* oob layout for large page size
++ * bad block info is on bytes 0 and 1
++ * the bytes have to be consecutives to avoid
++ * several NAND_CMD_RNDOUT during read
++ */
++static struct nand_ecclayout atmel_oobinfo_large = {
++	.eccbytes = 4,
++	.eccpos = {60, 61, 62, 63},
++	.oobfree = {
++		{2, 58}
++	},
++};
++
++/* oob layout for small page size
++ * bad block info is on bytes 4 and 5
++ * the bytes have to be consecutives to avoid
++ * several NAND_CMD_RNDOUT during read
++ */
++static struct nand_ecclayout atmel_oobinfo_small = {
++	.eccbytes = 4,
++	.eccpos = {0, 1, 2, 3},
++	.oobfree = {
++		{6, 10}
++	},
++};
++
++struct atmel_nand_host {
++	struct nand_chip	nand_chip;
++	struct mtd_info		mtd;
++	void __iomem		*io_base;
++	struct atmel_nand_data	*board;
++	struct device		*dev;
++	void __iomem		*ecc;
++};
++
++/*
++ * Enable NAND.
++ */
++static void atmel_nand_enable(struct atmel_nand_host *host)
++{
++	if (host->board->enable_pin)
++		gpio_set_value(host->board->enable_pin, 0);
++}
++
++/*
++ * Disable NAND.
++ */
++static void atmel_nand_disable(struct atmel_nand_host *host)
++{
++	if (host->board->enable_pin)
++		gpio_set_value(host->board->enable_pin, 1);
++}
++
++/*
++ * Hardware specific access to control-lines
++ */
++static void atmel_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
++{
++	struct nand_chip *nand_chip = mtd->priv;
++	struct atmel_nand_host *host = nand_chip->priv;
++
++	if (ctrl & NAND_CTRL_CHANGE) {
++		if (ctrl & NAND_NCE)
++			atmel_nand_enable(host);
++		else
++			atmel_nand_disable(host);
++	}
++	if (cmd == NAND_CMD_NONE)
++		return;
++
++	if (ctrl & NAND_CLE)
++		writeb(cmd, host->io_base + (1 << host->board->cle));
++	else
++		writeb(cmd, host->io_base + (1 << host->board->ale));
++}
++
++/*
++ * Read the Device Ready pin.
++ */
++static int atmel_nand_device_ready(struct mtd_info *mtd)
++{
++	struct nand_chip *nand_chip = mtd->priv;
++	struct atmel_nand_host *host = nand_chip->priv;
++
++	return gpio_get_value(host->board->rdy_pin);
++}
++
++/*
++ * Minimal-overhead PIO for data access.
++ */
++static void atmel_read_buf(struct mtd_info *mtd, u8 *buf, int len)
++{
++	struct nand_chip	*nand_chip = mtd->priv;
++
++	__raw_readsb(nand_chip->IO_ADDR_R, buf, len);
++}
++
++static void atmel_read_buf16(struct mtd_info *mtd, u8 *buf, int len)
++{
++	struct nand_chip	*nand_chip = mtd->priv;
++
++	__raw_readsw(nand_chip->IO_ADDR_R, buf, len / 2);
++}
++
++static void atmel_write_buf(struct mtd_info *mtd, const u8 *buf, int len)
++{
++	struct nand_chip	*nand_chip = mtd->priv;
++
++	__raw_writesb(nand_chip->IO_ADDR_W, buf, len);
++}
++
++static void atmel_write_buf16(struct mtd_info *mtd, const u8 *buf, int len)
++{
++	struct nand_chip	*nand_chip = mtd->priv;
++
++	__raw_writesw(nand_chip->IO_ADDR_W, buf, len / 2);
++}
++
++/*
++ * write oob for small pages
++ */
++static int atmel_nand_write_oob_512(struct mtd_info *mtd,
++		struct nand_chip *chip, int page)
++{
++	int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
++	int eccsize = chip->ecc.size, length = mtd->oobsize;
++	int len, pos, status = 0;
++	const uint8_t *bufpoi = chip->oob_poi;
++
++	pos = eccsize + chunk;
++
++	chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page);
++	len = min_t(int, length, chunk);
++	chip->write_buf(mtd, bufpoi, len);
++	bufpoi += len;
++	length -= len;
++	if (length > 0)
++		chip->write_buf(mtd, bufpoi, length);
++
++	chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
++	status = chip->waitfunc(mtd, chip);
++
++	return status & NAND_STATUS_FAIL ? -EIO : 0;
++
++}
++
++/*
++ * read oob for small pages
++ */
++static int atmel_nand_read_oob_512(struct mtd_info *mtd,
++		struct nand_chip *chip,	int page, int sndcmd)
++{
++	if (sndcmd) {
++		chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
++		sndcmd = 0;
++	}
++	chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
++	return sndcmd;
++}
++
++/*
++ * Calculate HW ECC
++ *
++ * function called after a write
++ *
++ * mtd:        MTD block structure
++ * dat:        raw data (unused)
++ * ecc_code:   buffer for ECC
++ */
++static int atmel_nand_calculate(struct mtd_info *mtd,
++		const u_char *dat, unsigned char *ecc_code)
++{
++	struct nand_chip *nand_chip = mtd->priv;
++	struct atmel_nand_host *host = nand_chip->priv;
++	uint32_t *eccpos = nand_chip->ecc.layout->eccpos;
++	unsigned int ecc_value;
++
++	/* get the first 2 ECC bytes */
++	ecc_value = ecc_readl(host->ecc, PR);
++
++	ecc_code[eccpos[0]] = ecc_value & 0xFF;
++	ecc_code[eccpos[1]] = (ecc_value >> 8) & 0xFF;
++
++	/* get the last 2 ECC bytes */
++	ecc_value = ecc_readl(host->ecc, NPR) & ATMEL_ECC_NPARITY;
++
++	ecc_code[eccpos[2]] = ecc_value & 0xFF;
++	ecc_code[eccpos[3]] = (ecc_value >> 8) & 0xFF;
++
++	return 0;
++}
++
++/*
++ * HW ECC read page function
++ *
++ * mtd:        mtd info structure
++ * chip:       nand chip info structure
++ * buf:        buffer to store read data
++ */
++static int atmel_nand_read_page(struct mtd_info *mtd,
++		struct nand_chip *chip, uint8_t *buf)
++{
++	int eccsize = chip->ecc.size;
++	int eccbytes = chip->ecc.bytes;
++	uint32_t *eccpos = chip->ecc.layout->eccpos;
++	uint8_t *p = buf;
++	uint8_t *oob = chip->oob_poi;
++	uint8_t *ecc_pos;
++	int stat;
++
++	/*
++	 * Errata: ALE is incorrectly wired up to the ECC controller
++	 * on the AP7000, so it will include the address cycles in the
++	 * ECC calculation.
++	 *
++	 * Workaround: Reset the parity registers before reading the
++	 * actual data.
++	 */
++	if (cpu_is_at32ap7000()) {
++		struct atmel_nand_host *host = chip->priv;
++		ecc_writel(host->ecc, CR, ATMEL_ECC_RST);
++	}
++
++	/* read the page */
++	chip->read_buf(mtd, p, eccsize);
++
++	/* move to ECC position if needed */
++	if (eccpos[0] != 0) {
++		/* This only works on large pages
++		 * because the ECC controller waits for
++		 * NAND_CMD_RNDOUTSTART after the
++		 * NAND_CMD_RNDOUT.
++		 * anyway, for small pages, the eccpos[0] == 0
++		 */
++		chip->cmdfunc(mtd, NAND_CMD_RNDOUT,
++				mtd->writesize + eccpos[0], -1);
++	}
++
++	/* the ECC controller needs to read the ECC just after the data */
++	ecc_pos = oob + eccpos[0];
++	chip->read_buf(mtd, ecc_pos, eccbytes);
++
++	/* check if there's an error */
++	stat = chip->ecc.correct(mtd, p, oob, NULL);
++
++	if (stat < 0)
++		mtd->ecc_stats.failed++;
++	else
++		mtd->ecc_stats.corrected += stat;
++
++	/* get back to oob start (end of page) */
++	chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1);
++
++	/* read the oob */
++	chip->read_buf(mtd, oob, mtd->oobsize);
++
++	return 0;
++}
++
++/*
++ * HW ECC Correction
++ *
++ * function called after a read
++ *
++ * mtd:        MTD block structure
++ * dat:        raw data read from the chip
++ * read_ecc:   ECC from the chip (unused)
++ * isnull:     unused
++ *
++ * Detect and correct a 1 bit error for a page
++ */
++static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat,
++		u_char *read_ecc, u_char *isnull)
++{
++	struct nand_chip *nand_chip = mtd->priv;
++	struct atmel_nand_host *host = nand_chip->priv;
++	unsigned int ecc_status;
++	unsigned int ecc_word, ecc_bit;
++
++	/* get the status from the Status Register */
++	ecc_status = ecc_readl(host->ecc, SR);
++
++	/* if there's no error */
++	if (likely(!(ecc_status & ATMEL_ECC_RECERR)))
++		return 0;
++
++	/* get error bit offset (4 bits) */
++	ecc_bit = ecc_readl(host->ecc, PR) & ATMEL_ECC_BITADDR;
++	/* get word address (12 bits) */
++	ecc_word = ecc_readl(host->ecc, PR) & ATMEL_ECC_WORDADDR;
++	ecc_word >>= 4;
++
++	/* if there are multiple errors */
++	if (ecc_status & ATMEL_ECC_MULERR) {
++		/* check if it is a freshly erased block
++		 * (filled with 0xff) */
++		if ((ecc_bit == ATMEL_ECC_BITADDR)
++				&& (ecc_word == (ATMEL_ECC_WORDADDR >> 4))) {
++			/* the block has just been erased, return OK */
++			return 0;
++		}
++		/* it doesn't seems to be a freshly
++		 * erased block.
++		 * We can't correct so many errors */
++		dev_dbg(host->dev, "atmel_nand : multiple errors detected."
++				" Unable to correct.\n");
++		return -EIO;
++	}
++
++	/* if there's a single bit error : we can correct it */
++	if (ecc_status & ATMEL_ECC_ECCERR) {
++		/* there's nothing much to do here.
++		 * the bit error is on the ECC itself.
++		 */
++		dev_dbg(host->dev, "atmel_nand : one bit error on ECC code."
++				" Nothing to correct\n");
++		return 0;
++	}
++
++	dev_dbg(host->dev, "atmel_nand : one bit error on data."
++			" (word offset in the page :"
++			" 0x%x bit offset : 0x%x)\n",
++			ecc_word, ecc_bit);
++	/* correct the error */
++	if (nand_chip->options & NAND_BUSWIDTH_16) {
++		/* 16 bits words */
++		((unsigned short *) dat)[ecc_word] ^= (1 << ecc_bit);
++	} else {
++		/* 8 bits words */
++		dat[ecc_word] ^= (1 << ecc_bit);
++	}
++	dev_dbg(host->dev, "atmel_nand : error corrected\n");
++	return 1;
++}
++
++/*
++ * Enable HW ECC : unused on most chips
++ */
++static void atmel_nand_hwctl(struct mtd_info *mtd, int mode)
++{
++	if (cpu_is_at32ap7000()) {
++		struct nand_chip *nand_chip = mtd->priv;
++		struct atmel_nand_host *host = nand_chip->priv;
++		ecc_writel(host->ecc, CR, ATMEL_ECC_RST);
++	}
++}
++
++#ifdef CONFIG_MTD_PARTITIONS
++static const char *part_probes[] = { "cmdlinepart", NULL };
++#endif
++
++/*
++ * Probe for the NAND device.
++ */
++static int __init atmel_nand_probe(struct platform_device *pdev)
++{
++	struct atmel_nand_host *host;
++	struct mtd_info *mtd;
++	struct nand_chip *nand_chip;
++	struct resource *regs;
++	struct resource *mem;
++	int res;
++
++#ifdef CONFIG_MTD_PARTITIONS
++	struct mtd_partition *partitions = NULL;
++	int num_partitions = 0;
++#endif
++
++	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (!mem) {
++		printk(KERN_ERR "atmel_nand: can't get I/O resource mem\n");
++		return -ENXIO;
++	}
++
++	/* Allocate memory for the device structure (and zero it) */
++	host = kzalloc(sizeof(struct atmel_nand_host), GFP_KERNEL);
++	if (!host) {
++		printk(KERN_ERR "atmel_nand: failed to allocate device structure.\n");
++		return -ENOMEM;
++	}
++
++	host->io_base = ioremap(mem->start, mem->end - mem->start + 1);
++	if (host->io_base == NULL) {
++		printk(KERN_ERR "atmel_nand: ioremap failed\n");
++		res = -EIO;
++		goto err_nand_ioremap;
++	}
++
++	mtd = &host->mtd;
++	nand_chip = &host->nand_chip;
++	host->board = pdev->dev.platform_data;
++	host->dev = &pdev->dev;
++
++	nand_chip->priv = host;		/* link the private data structures */
++	mtd->priv = nand_chip;
++	mtd->owner = THIS_MODULE;
++
++	/* Set address of NAND IO lines */
++	nand_chip->IO_ADDR_R = host->io_base;
++	nand_chip->IO_ADDR_W = host->io_base;
++	nand_chip->cmd_ctrl = atmel_nand_cmd_ctrl;
++
++	if (host->board->rdy_pin)
++		nand_chip->dev_ready = atmel_nand_device_ready;
++
++	regs = platform_get_resource(pdev, IORESOURCE_MEM, 1);
++	if (!regs && hard_ecc) {
++		printk(KERN_ERR "atmel_nand: can't get I/O resource "
++				"regs\nFalling back on software ECC\n");
++	}
++
++	nand_chip->ecc.mode = NAND_ECC_SOFT;	/* enable ECC */
++	if (no_ecc)
++		nand_chip->ecc.mode = NAND_ECC_NONE;
++	if (hard_ecc && regs) {
++		host->ecc = ioremap(regs->start, regs->end - regs->start + 1);
++		if (host->ecc == NULL) {
++			printk(KERN_ERR "atmel_nand: ioremap failed\n");
++			res = -EIO;
++			goto err_ecc_ioremap;
++		}
++		nand_chip->ecc.mode = NAND_ECC_HW_SYNDROME;
++		nand_chip->ecc.calculate = atmel_nand_calculate;
++		nand_chip->ecc.correct = atmel_nand_correct;
++		nand_chip->ecc.hwctl = atmel_nand_hwctl;
++		nand_chip->ecc.read_page = atmel_nand_read_page;
++		nand_chip->ecc.bytes = 4;
++		nand_chip->ecc.prepad = 0;
++		nand_chip->ecc.postpad = 0;
++	}
++
++	nand_chip->chip_delay = 20;		/* 20us command delay time */
++
++	if (host->board->bus_width_16) {	/* 16-bit bus width */
++		nand_chip->options |= NAND_BUSWIDTH_16;
++		nand_chip->read_buf = atmel_read_buf16;
++		nand_chip->write_buf = atmel_write_buf16;
++	} else {
++		nand_chip->read_buf = atmel_read_buf;
++		nand_chip->write_buf = atmel_write_buf;
++	}
++
++	platform_set_drvdata(pdev, host);
++	atmel_nand_enable(host);
++
++	if (host->board->det_pin) {
++		if (gpio_get_value(host->board->det_pin)) {
++			printk("No SmartMedia card inserted.\n");
++			res = ENXIO;
++			goto err_no_card;
++		}
++	}
++
++	/* first scan to find the device and get the page size */
++	if (nand_scan_ident(mtd, 1)) {
++		res = -ENXIO;
++		goto err_scan_ident;
++	}
++
++	if (nand_chip->ecc.mode == NAND_ECC_HW_SYNDROME) {
++		/* ECC is calculated for the whole page (1 step) */
++		nand_chip->ecc.size = mtd->writesize;
++
++		/* set ECC page size and oob layout */
++		switch (mtd->writesize) {
++		case 512:
++			nand_chip->ecc.layout = &atmel_oobinfo_small;
++			nand_chip->ecc.read_oob = atmel_nand_read_oob_512;
++			nand_chip->ecc.write_oob = atmel_nand_write_oob_512;
++			ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_528);
++			break;
++		case 1024:
++			nand_chip->ecc.layout = &atmel_oobinfo_large;
++			ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_1056);
++			break;
++		case 2048:
++			nand_chip->ecc.layout = &atmel_oobinfo_large;
++			ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_2112);
++			break;
++		case 4096:
++			nand_chip->ecc.layout = &atmel_oobinfo_large;
++			ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_4224);
++			break;
++		default:
++			/* page size not handled by HW ECC */
++			/* switching back to soft ECC */
++			nand_chip->ecc.mode = NAND_ECC_SOFT;
++			nand_chip->ecc.calculate = NULL;
++			nand_chip->ecc.correct = NULL;
++			nand_chip->ecc.hwctl = NULL;
++			nand_chip->ecc.read_page = NULL;
++			nand_chip->ecc.postpad = 0;
++			nand_chip->ecc.prepad = 0;
++			nand_chip->ecc.bytes = 0;
++			break;
++		}
++	}
++
++	/* second phase scan */
++	if (nand_scan_tail(mtd)) {
++		res = -ENXIO;
++		goto err_scan_tail;
++	}
++
++#ifdef CONFIG_MTD_PARTITIONS
++#ifdef CONFIG_MTD_CMDLINE_PARTS
++	mtd->name = "atmel_nand";
++	num_partitions = parse_mtd_partitions(mtd, part_probes,
++					      &partitions, 0);
++#endif
++	if (num_partitions <= 0 && host->board->partition_info)
++		partitions = host->board->partition_info(mtd->size,
++							 &num_partitions);
++
++	if ((!partitions) || (num_partitions == 0)) {
++		printk(KERN_ERR "atmel_nand: No parititions defined, or unsupported device.\n");
++		res = ENXIO;
++		goto err_no_partitions;
++	}
++
++	res = add_mtd_partitions(mtd, partitions, num_partitions);
++#else
++	res = add_mtd_device(mtd);
++#endif
++
++	if (!res)
++		return res;
++
++#ifdef CONFIG_MTD_PARTITIONS
++err_no_partitions:
++#endif
++	nand_release(mtd);
++err_scan_tail:
++err_scan_ident:
++err_no_card:
++	atmel_nand_disable(host);
++	platform_set_drvdata(pdev, NULL);
++	if (host->ecc)
++		iounmap(host->ecc);
++err_ecc_ioremap:
++	iounmap(host->io_base);
++err_nand_ioremap:
++	kfree(host);
++	return res;
++}
++
++/*
++ * Remove a NAND device.
++ */
++static int __exit atmel_nand_remove(struct platform_device *pdev)
++{
++	struct atmel_nand_host *host = platform_get_drvdata(pdev);
++	struct mtd_info *mtd = &host->mtd;
++
++	nand_release(mtd);
++
++	atmel_nand_disable(host);
++
++	if (host->ecc)
++		iounmap(host->ecc);
++	iounmap(host->io_base);
++	kfree(host);
++
++	return 0;
++}
++
++static struct platform_driver atmel_nand_driver = {
++	.remove		= __exit_p(atmel_nand_remove),
++	.driver		= {
++		.name	= "atmel_nand",
++		.owner	= THIS_MODULE,
++	},
++};
++
++static int __init atmel_nand_init(void)
++{
++	return platform_driver_probe(&atmel_nand_driver, atmel_nand_probe);
++}
++
++
++static void __exit atmel_nand_exit(void)
++{
++	platform_driver_unregister(&atmel_nand_driver);
++}
++
++
++module_init(atmel_nand_init);
++module_exit(atmel_nand_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Rick Bronson");
++MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91 / AVR32");
++MODULE_ALIAS("platform:atmel_nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/atmel_nand_ecc.h avr32-2.6/drivers/mtd/nand/atmel_nand_ecc.h
+--- linux-2.6.25.6/drivers/mtd/nand/atmel_nand_ecc.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mtd/nand/atmel_nand_ecc.h	2008-06-12 15:09:41.111815840 +0200
+@@ -0,0 +1,36 @@
++/*
++ * Error Corrected Code Controller (ECC) - System peripherals regsters.
++ * Based on AT91SAM9260 datasheet revision B.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License as published by the
++ * Free Software Foundation; either version 2 of the License, or (at your
++ * option) any later version.
++ */
++
++#ifndef ATMEL_NAND_ECC_H
++#define ATMEL_NAND_ECC_H
++
++#define ATMEL_ECC_CR		0x00			/* Control register */
++#define		ATMEL_ECC_RST		(1 << 0)		/* Reset parity */
++
++#define ATMEL_ECC_MR		0x04			/* Mode register */
++#define		ATMEL_ECC_PAGESIZE	(3 << 0)		/* Page Size */
++#define			ATMEL_ECC_PAGESIZE_528		(0)
++#define			ATMEL_ECC_PAGESIZE_1056		(1)
++#define			ATMEL_ECC_PAGESIZE_2112		(2)
++#define			ATMEL_ECC_PAGESIZE_4224		(3)
++
++#define ATMEL_ECC_SR		0x08			/* Status register */
++#define		ATMEL_ECC_RECERR		(1 << 0)		/* Recoverable Error */
++#define		ATMEL_ECC_ECCERR		(1 << 1)		/* ECC Single Bit Error */
++#define		ATMEL_ECC_MULERR		(1 << 2)		/* Multiple Errors */
++
++#define ATMEL_ECC_PR		0x0c			/* Parity register */
++#define		ATMEL_ECC_BITADDR	(0xf << 0)		/* Bit Error Address */
++#define		ATMEL_ECC_WORDADDR	(0xfff << 4)		/* Word Error Address */
++
++#define ATMEL_ECC_NPR		0x10			/* NParity register */
++#define		ATMEL_ECC_NPARITY	(0xffff << 0)		/* NParity */
++
++#endif
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/bf5xx_nand.c avr32-2.6/drivers/mtd/nand/bf5xx_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/bf5xx_nand.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/bf5xx_nand.c	2008-06-12 15:09:41.111815840 +0200
+@@ -803,3 +803,4 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR(DRV_AUTHOR);
+ MODULE_DESCRIPTION(DRV_DESC);
++MODULE_ALIAS("platform:" DRV_NAME);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/Kconfig avr32-2.6/drivers/mtd/nand/Kconfig
+--- linux-2.6.25.6/drivers/mtd/nand/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/Kconfig	2008-06-12 15:09:41.107815889 +0200
+@@ -272,12 +272,54 @@
+ 
+ 	  If you say "m", the module will be called "cs553x_nand.ko".
+ 
+-config MTD_NAND_AT91
+-	bool "Support for NAND Flash / SmartMedia on AT91"
+-	depends on ARCH_AT91
++config MTD_NAND_ATMEL
++	bool "Support for NAND Flash / SmartMedia on AT91 and AVR32"
++	depends on ARCH_AT91 || AVR32
+ 	help
+ 	  Enables support for NAND Flash / Smart Media Card interface
+-	  on Atmel AT91 processors.
++	  on Atmel AT91 and AVR32 processors.
++choice
++	prompt "ECC management for NAND Flash / SmartMedia on AT91 / AVR32"
++	depends on MTD_NAND_ATMEL
++
++config MTD_NAND_ATMEL_ECC_HW
++	bool "Hardware ECC"
++	depends on ARCH_AT91SAM9263 || ARCH_AT91SAM9260 || AVR32
++	help
++	  Use hardware ECC instead of software ECC when the chip
++	  supports it.
++
++	  The hardware ECC controller is capable of single bit error
++	  correction and 2-bit random detection per page.
++
++	  NB : hardware and software ECC schemes are incompatible.
++	  If you switch from one to another, you'll have to erase your
++	  mtd partition.
++
++	  If unsure, say Y
++
++config MTD_NAND_ATMEL_ECC_SOFT
++	bool "Software ECC"
++	help
++	  Use software ECC.
++
++	  NB : hardware and software ECC schemes are incompatible.
++	  If you switch from one to another, you'll have to erase your
++	  mtd partition.
++
++config MTD_NAND_ATMEL_ECC_NONE
++	bool "No ECC (testing only, DANGEROUS)"
++	depends on DEBUG_KERNEL
++	help
++	  No ECC will be used.
++	  It's not a good idea and it should be reserved for testing
++	  purpose only.
++
++	  If unsure, say N
++
++	  endchoice
++
++endchoice
+ 
+ config MTD_NAND_CM_X270
+ 	tristate "Support for NAND Flash on CM-X270 modules"
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/Makefile avr32-2.6/drivers/mtd/nand/Makefile
+--- linux-2.6.25.6/drivers/mtd/nand/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/Makefile	2008-06-12 15:09:41.107815889 +0200
+@@ -24,7 +24,7 @@
+ obj-$(CONFIG_MTD_NAND_NANDSIM)		+= nandsim.o
+ obj-$(CONFIG_MTD_NAND_CS553X)		+= cs553x_nand.o
+ obj-$(CONFIG_MTD_NAND_NDFC)		+= ndfc.o
+-obj-$(CONFIG_MTD_NAND_AT91)		+= at91_nand.o
++obj-$(CONFIG_MTD_NAND_ATMEL)		+= atmel_nand.o
+ obj-$(CONFIG_MTD_NAND_CM_X270)		+= cmx270_nand.o
+ obj-$(CONFIG_MTD_NAND_BASLER_EXCITE)	+= excite_nandflash.o
+ obj-$(CONFIG_MTD_NAND_PLATFORM)		+= plat_nand.o
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/ndfc.c avr32-2.6/drivers/mtd/nand/ndfc.c
+--- linux-2.6.25.6/drivers/mtd/nand/ndfc.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/ndfc.c	2008-06-12 15:03:59.579815954 +0200
+@@ -317,3 +317,5 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
+ MODULE_DESCRIPTION("Platform driver for NDFC");
++MODULE_ALIAS("platform:ndfc-chip");
++MODULE_ALIAS("platform:ndfc-nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/orion_nand.c avr32-2.6/drivers/mtd/nand/orion_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/orion_nand.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/orion_nand.c	2008-06-12 15:09:41.115816070 +0200
+@@ -169,3 +169,4 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Tzachi Perelstein");
+ MODULE_DESCRIPTION("NAND glue for Orion platforms");
++MODULE_ALIAS("platform:orion_nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/plat_nand.c avr32-2.6/drivers/mtd/nand/plat_nand.c
+--- linux-2.6.25.6/drivers/mtd/nand/plat_nand.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/plat_nand.c	2008-06-12 15:09:41.115816070 +0200
+@@ -150,3 +150,4 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Vitaly Wool");
+ MODULE_DESCRIPTION("Simple generic NAND driver");
++MODULE_ALIAS("platform:gen_nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/nand/s3c2410.c avr32-2.6/drivers/mtd/nand/s3c2410.c
+--- linux-2.6.25.6/drivers/mtd/nand/s3c2410.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/nand/s3c2410.c	2008-06-12 15:09:41.115816070 +0200
+@@ -927,3 +927,6 @@
+ MODULE_LICENSE("GPL");
+ MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+ MODULE_DESCRIPTION("S3C24XX MTD NAND driver");
++MODULE_ALIAS("platform:s3c2410-nand");
++MODULE_ALIAS("platform:s3c2412-nand");
++MODULE_ALIAS("platform:s3c2440-nand");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/build.c avr32-2.6/drivers/mtd/ubi/build.c
+--- linux-2.6.25.6/drivers/mtd/ubi/build.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/build.c	2008-06-12 15:09:41.119815462 +0200
+@@ -355,15 +355,34 @@
  }
- #endif
  
-+/* Atmel chips don't use the same PRI format as Intel chips */
-+static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
-+{
-+	struct map_info *map = mtd->priv;
-+	struct cfi_private *cfi = map->fldrv_priv;
-+	struct cfi_pri_intelext *extp = cfi->cmdset_priv;
-+	struct cfi_pri_atmel atmel_pri;
-+	uint32_t features = 0;
-+
-+	/* Reverse byteswapping */
-+	extp->FeatureSupport = cpu_to_le32(extp->FeatureSupport);
-+	extp->BlkStatusRegMask = cpu_to_le16(extp->BlkStatusRegMask);
-+	extp->ProtRegAddr = cpu_to_le16(extp->ProtRegAddr);
-+
-+	memcpy(&atmel_pri, extp, sizeof(atmel_pri));
-+	memset((char *)extp + 5, 0, sizeof(*extp) - 5);
-+
-+	printk(KERN_ERR "atmel Features: %02x\n", atmel_pri.Features);
-+
-+	if (atmel_pri.Features & 0x01) /* chip erase supported */
-+		features |= (1<<0);
-+	if (atmel_pri.Features & 0x02) /* erase suspend supported */
-+		features |= (1<<1);
-+	if (atmel_pri.Features & 0x04) /* program suspend supported */
-+		features |= (1<<2);
-+	if (atmel_pri.Features & 0x08) /* simultaneous operations supported */
-+		features |= (1<<9);
-+	if (atmel_pri.Features & 0x20) /* page mode read supported */
-+		features |= (1<<7);
-+	if (atmel_pri.Features & 0x40) /* queued erase supported */
-+		features |= (1<<4);
-+	if (atmel_pri.Features & 0x80) /* Protection bits supported */
-+		features |= (1<<6);
-+
-+	extp->FeatureSupport = features;
-+
-+	/* burst write mode not supported */
-+	cfi->cfiq->BufWriteTimeoutTyp = 0;
-+	cfi->cfiq->BufWriteTimeoutMax = 0;
-+}
-+
- #ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
- /* Some Intel Strata Flash prior to FPO revision C has bugs in this area */
- static void fixup_intel_strataflash(struct mtd_info *mtd, void* param)
-@@ -234,6 +276,7 @@
+ /**
++ * free_user_volumes - free all user volumes.
++ * @ubi: UBI device description object
++ *
++ * Normally the volumes are freed at the release function of the volume device
++ * objects. However, on error paths the volumes have to be freed before the
++ * device objects have been initialized.
++ */
++static void free_user_volumes(struct ubi_device *ubi)
++{
++	int i;
++
++	for (i = 0; i < ubi->vtbl_slots; i++)
++		if (ubi->volumes[i]) {
++			kfree(ubi->volumes[i]->eba_tbl);
++			kfree(ubi->volumes[i]);
++		}
++}
++
++/**
+  * uif_init - initialize user interfaces for an UBI device.
+  * @ubi: UBI device description object
+  *
+  * This function returns zero in case of success and a negative error code in
+- * case of failure.
++ * case of failure. Note, this function destroys all volumes if it failes.
+  */
+ static int uif_init(struct ubi_device *ubi)
+ {
+-	int i, err;
++	int i, err, do_free = 0;
+ 	dev_t dev;
+ 
+ 	sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num);
+@@ -410,10 +429,13 @@
+ 
+ out_volumes:
+ 	kill_volumes(ubi);
++	do_free = 0;
+ out_sysfs:
+ 	ubi_sysfs_close(ubi);
+ 	cdev_del(&ubi->cdev);
+ out_unreg:
++	if (do_free)
++		free_user_volumes(ubi);
+ 	unregister_chrdev_region(ubi->cdev.dev, ubi->vtbl_slots + 1);
+ 	ubi_err("cannot initialize UBI %s, error %d", ubi->ubi_name, err);
+ 	return err;
+@@ -422,6 +444,10 @@
+ /**
+  * uif_close - close user interfaces for an UBI device.
+  * @ubi: UBI device description object
++ *
++ * Note, since this function un-registers UBI volume device objects (@vol->dev),
++ * the memory allocated voe the volumes is freed as well (in the release
++ * function).
+  */
+ static void uif_close(struct ubi_device *ubi)
+ {
+@@ -432,6 +458,21 @@
  }
  
- static struct cfi_fixup cfi_fixup_table[] = {
-+	{ CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
- #ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
- 	{ CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL },
+ /**
++ * free_internal_volumes - free internal volumes.
++ * @ubi: UBI device description object
++ */
++static void free_internal_volumes(struct ubi_device *ubi)
++{
++	int i;
++
++	for (i = ubi->vtbl_slots;
++	     i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {
++		kfree(ubi->volumes[i]->eba_tbl);
++		kfree(ubi->volumes[i]);
++	}
++}
++
++/**
+  * attach_by_scanning - attach an MTD device using scanning method.
+  * @ubi: UBI device descriptor
+  *
+@@ -475,6 +516,7 @@
+ out_wl:
+ 	ubi_wl_close(ubi);
+ out_vtbl:
++	free_internal_volumes(ubi);
+ 	vfree(ubi->vtbl);
+ out_si:
+ 	ubi_scan_destroy_si(si);
+@@ -530,7 +572,11 @@
+ 	ubi->min_io_size = ubi->mtd->writesize;
+ 	ubi->hdrs_min_io_size = ubi->mtd->writesize >> ubi->mtd->subpage_sft;
+ 
+-	/* Make sure minimal I/O unit is power of 2 */
++	/*
++	 * Make sure minimal I/O unit is power of 2. Note, there is no
++	 * fundamental reason for this assumption. It is just an optimization
++	 * which allows us to avoid costly division operations.
++	 */
+ 	if (!is_power_of_2(ubi->min_io_size)) {
+ 		ubi_err("min. I/O unit (%d) is not power of 2",
+ 			ubi->min_io_size);
+@@ -581,7 +627,7 @@
+ 	if (ubi->vid_hdr_offset < UBI_EC_HDR_SIZE ||
+ 	    ubi->leb_start < ubi->vid_hdr_offset + UBI_VID_HDR_SIZE ||
+ 	    ubi->leb_start > ubi->peb_size - UBI_VID_HDR_SIZE ||
+-	    ubi->leb_start % ubi->min_io_size) {
++	    ubi->leb_start & (ubi->min_io_size - 1)) {
+ 		ubi_err("bad VID header (%d) or data offsets (%d)",
+ 			ubi->vid_hdr_offset, ubi->leb_start);
+ 		return -EINVAL;
+@@ -606,8 +652,16 @@
+ 		ubi->ro_mode = 1;
+ 	}
+ 
+-	dbg_msg("leb_size         %d", ubi->leb_size);
+-	dbg_msg("ro_mode          %d", ubi->ro_mode);
++	ubi_msg("physical eraseblock size:   %d bytes (%d KiB)",
++		ubi->peb_size, ubi->peb_size >> 10);
++	ubi_msg("logical eraseblock size:    %d bytes", ubi->leb_size);
++	ubi_msg("smallest flash I/O unit:    %d", ubi->min_io_size);
++	if (ubi->hdrs_min_io_size != ubi->min_io_size)
++		ubi_msg("sub-page size:              %d",
++			ubi->hdrs_min_io_size);
++	ubi_msg("VID header offset:          %d (aligned %d)",
++		ubi->vid_hdr_offset, ubi->vid_hdr_aloffset);
++	ubi_msg("data offset:                %d", ubi->leb_start);
+ 
+ 	/*
+ 	 * Note, ideally, we have to initialize ubi->bad_peb_count here. But
+@@ -638,7 +692,7 @@
+ 
+ 	/*
+ 	 * Clear the auto-resize flag in the volume in-memory copy of the
+-	 * volume table, and 'ubi_resize_volume()' will propogate this change
++	 * volume table, and 'ubi_resize_volume()' will propagate this change
+ 	 * to the flash.
+ 	 */
+ 	ubi->vtbl[vol_id].flags &= ~UBI_VTBL_AUTORESIZE_FLG;
+@@ -647,7 +701,7 @@
+ 		struct ubi_vtbl_record vtbl_rec;
+ 
+ 		/*
+-		 * No avalilable PEBs to re-size the volume, clear the flag on
++		 * No available PEBs to re-size the volume, clear the flag on
+ 		 * flash and exit.
+ 		 */
+ 		memcpy(&vtbl_rec, &ubi->vtbl[vol_id],
+@@ -680,7 +734,7 @@
+  *
+  * This function attaches MTD device @mtd_dev to UBI and assign @ubi_num number
+  * to the newly created UBI device, unless @ubi_num is %UBI_DEV_NUM_AUTO, in
+- * which case this function finds a vacant device nubert and assings it
++ * which case this function finds a vacant device number and assigns it
+  * automatically. Returns the new UBI device number in case of success and a
+  * negative error code in case of failure.
+  *
+@@ -690,7 +744,7 @@
+ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
+ {
+ 	struct ubi_device *ubi;
+-	int i, err;
++	int i, err, do_free = 1;
+ 
+ 	/*
+ 	 * Check if we already have the same MTD device attached.
+@@ -755,8 +809,7 @@
+ 	mutex_init(&ubi->volumes_mutex);
+ 	spin_lock_init(&ubi->volumes_lock);
+ 
+-	dbg_msg("attaching mtd%d to ubi%d: VID header offset %d",
+-		mtd->index, ubi_num, vid_hdr_offset);
++	ubi_msg("attaching mtd%d to ubi%d", mtd->index, ubi_num);
+ 
+ 	err = io_init(ubi);
+ 	if (err)
+@@ -791,7 +844,7 @@
+ 
+ 	err = uif_init(ubi);
+ 	if (err)
+-		goto out_detach;
++		goto out_nofree;
+ 
+ 	ubi->bgt_thread = kthread_create(ubi_thread, ubi, ubi->bgt_name);
+ 	if (IS_ERR(ubi->bgt_thread)) {
+@@ -804,15 +857,8 @@
+ 	ubi_msg("attached mtd%d to ubi%d", mtd->index, ubi_num);
+ 	ubi_msg("MTD device name:            \"%s\"", mtd->name);
+ 	ubi_msg("MTD device size:            %llu MiB", ubi->flash_size >> 20);
+-	ubi_msg("physical eraseblock size:   %d bytes (%d KiB)",
+-		ubi->peb_size, ubi->peb_size >> 10);
+-	ubi_msg("logical eraseblock size:    %d bytes", ubi->leb_size);
+ 	ubi_msg("number of good PEBs:        %d", ubi->good_peb_count);
+ 	ubi_msg("number of bad PEBs:         %d", ubi->bad_peb_count);
+-	ubi_msg("smallest flash I/O unit:    %d", ubi->min_io_size);
+-	ubi_msg("VID header offset:          %d (aligned %d)",
+-		ubi->vid_hdr_offset, ubi->vid_hdr_aloffset);
+-	ubi_msg("data offset:                %d", ubi->leb_start);
+ 	ubi_msg("max. allowed volumes:       %d", ubi->vtbl_slots);
+ 	ubi_msg("wear-leveling threshold:    %d", CONFIG_MTD_UBI_WL_THRESHOLD);
+ 	ubi_msg("number of internal volumes: %d", UBI_INT_VOL_COUNT);
+@@ -835,9 +881,13 @@
+ 
+ out_uif:
+ 	uif_close(ubi);
++out_nofree:
++	do_free = 0;
+ out_detach:
+-	ubi_eba_close(ubi);
+ 	ubi_wl_close(ubi);
++	if (do_free)
++		free_user_volumes(ubi);
++	free_internal_volumes(ubi);
+ 	vfree(ubi->vtbl);
+ out_free:
+ 	vfree(ubi->peb_buf1);
+@@ -899,8 +949,8 @@
+ 		kthread_stop(ubi->bgt_thread);
+ 
+ 	uif_close(ubi);
+-	ubi_eba_close(ubi);
+ 	ubi_wl_close(ubi);
++	free_internal_volumes(ubi);
+ 	vfree(ubi->vtbl);
+ 	put_mtd_device(ubi->mtd);
+ 	vfree(ubi->peb_buf1);
+@@ -950,8 +1000,7 @@
+ 	BUILD_BUG_ON(sizeof(struct ubi_vid_hdr) != 64);
+ 
+ 	if (mtd_devs > UBI_MAX_DEVICES) {
+-		printk(KERN_ERR "UBI error: too many MTD devices, "
+-		       "maximum is %d\n", UBI_MAX_DEVICES);
++		ubi_err("too many MTD devices, maximum is %d", UBI_MAX_DEVICES);
+ 		return -EINVAL;
+ 	}
+ 
+@@ -959,25 +1008,25 @@
+ 	ubi_class = class_create(THIS_MODULE, UBI_NAME_STR);
+ 	if (IS_ERR(ubi_class)) {
+ 		err = PTR_ERR(ubi_class);
+-		printk(KERN_ERR "UBI error: cannot create UBI class\n");
++		ubi_err("cannot create UBI class");
+ 		goto out;
+ 	}
+ 
+ 	err = class_create_file(ubi_class, &ubi_version);
+ 	if (err) {
+-		printk(KERN_ERR "UBI error: cannot create sysfs file\n");
++		ubi_err("cannot create sysfs file");
+ 		goto out_class;
+ 	}
+ 
+ 	err = misc_register(&ubi_ctrl_cdev);
+ 	if (err) {
+-		printk(KERN_ERR "UBI error: cannot register device\n");
++		ubi_err("cannot register device");
+ 		goto out_version;
+ 	}
+ 
+ 	ubi_wl_entry_slab = kmem_cache_create("ubi_wl_entry_slab",
+-						sizeof(struct ubi_wl_entry),
+-						0, 0, NULL);
++					      sizeof(struct ubi_wl_entry),
++					      0, 0, NULL);
+ 	if (!ubi_wl_entry_slab)
+ 		goto out_dev_unreg;
+ 
+@@ -1000,8 +1049,7 @@
+ 		mutex_unlock(&ubi_devices_mutex);
+ 		if (err < 0) {
+ 			put_mtd_device(mtd);
+-			printk(KERN_ERR "UBI error: cannot attach mtd%d\n",
+-			       mtd->index);
++			ubi_err("cannot attach mtd%d", mtd->index);
+ 			goto out_detach;
+ 		}
+ 	}
+@@ -1023,7 +1071,7 @@
+ out_class:
+ 	class_destroy(ubi_class);
+ out:
+-	printk(KERN_ERR "UBI error: cannot initialize UBI, error %d\n", err);
++	ubi_err("UBI error: cannot initialize UBI, error %d", err);
+ 	return err;
+ }
+ module_init(ubi_init);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/cdev.c avr32-2.6/drivers/mtd/ubi/cdev.c
+--- linux-2.6.25.6/drivers/mtd/ubi/cdev.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/cdev.c	2008-06-12 15:09:41.119815462 +0200
+@@ -290,7 +290,7 @@
+ 	off = do_div(tmp, vol->usable_leb_size);
+ 	lnum = tmp;
+ 
+-	if (off % ubi->min_io_size) {
++	if (off & (ubi->min_io_size - 1)) {
+ 		dbg_err("unaligned position");
+ 		return -EINVAL;
+ 	}
+@@ -299,7 +299,7 @@
+ 		count_save = count = vol->used_bytes - *offp;
+ 
+ 	/* We can write only in fractions of the minimum I/O unit */
+-	if (count % ubi->min_io_size) {
++	if (count & (ubi->min_io_size - 1)) {
+ 		dbg_err("unaligned write length");
+ 		return -EINVAL;
+ 	}
+@@ -559,7 +559,7 @@
+ 	if (req->alignment > ubi->leb_size)
+ 		goto bad;
+ 
+-	n = req->alignment % ubi->min_io_size;
++	n = req->alignment & (ubi->min_io_size - 1);
+ 	if (req->alignment != 1 && n)
+ 		goto bad;
+ 
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/debug.h avr32-2.6/drivers/mtd/ubi/debug.h
+--- linux-2.6.25.6/drivers/mtd/ubi/debug.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/debug.h	2008-06-12 15:09:41.123815692 +0200
+@@ -99,8 +99,10 @@
+ #ifdef CONFIG_MTD_UBI_DEBUG_MSG_BLD
+ /* Initialization and build messages */
+ #define dbg_bld(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
++#define UBI_IO_DEBUG 1
+ #else
+ #define dbg_bld(fmt, ...) ({})
++#define UBI_IO_DEBUG 0
  #endif
---- a/drivers/mtd/chips/cfi_cmdset_0002.c
-+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
-@@ -186,6 +186,10 @@
- 		extp->TopBottom = 2;
+ 
+ #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_BITFLIPS
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/eba.c avr32-2.6/drivers/mtd/ubi/eba.c
+--- linux-2.6.25.6/drivers/mtd/ubi/eba.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/eba.c	2008-06-12 15:09:41.123815692 +0200
+@@ -752,7 +752,7 @@
+ 		/* If this is the last LEB @len may be unaligned */
+ 		len = ALIGN(data_size, ubi->min_io_size);
  	else
- 		extp->TopBottom = 3;
-+
-+	/* burst write mode not supported */
-+	cfi->cfiq->BufWriteTimeoutTyp = 0;
-+	cfi->cfiq->BufWriteTimeoutMax = 0;
+-		ubi_assert(len % ubi->min_io_size == 0);
++		ubi_assert(!(len & (ubi->min_io_size - 1)));
+ 
+ 	vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS);
+ 	if (!vid_hdr)
+@@ -1233,20 +1233,3 @@
+ 	}
+ 	return err;
  }
+-
+-/**
+- * ubi_eba_close - close EBA unit.
+- * @ubi: UBI device description object
+- */
+-void ubi_eba_close(const struct ubi_device *ubi)
+-{
+-	int i, num_volumes = ubi->vtbl_slots + UBI_INT_VOL_COUNT;
+-
+-	dbg_eba("close EBA unit");
+-
+-	for (i = 0; i < num_volumes; i++) {
+-		if (!ubi->volumes[i])
+-			continue;
+-		kfree(ubi->volumes[i]->eba_tbl);
+-	}
+-}
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/gluebi.c avr32-2.6/drivers/mtd/ubi/gluebi.c
+--- linux-2.6.25.6/drivers/mtd/ubi/gluebi.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/gluebi.c	2008-06-12 15:03:59.587815297 +0200
+@@ -291,11 +291,12 @@
+ 	/*
+ 	 * In case of dynamic volume, MTD device size is just volume size. In
+ 	 * case of a static volume the size is equivalent to the amount of data
+-	 * bytes, which is zero at this moment and will be changed after volume
+-	 * update.
++	 * bytes.
+ 	 */
+ 	if (vol->vol_type == UBI_DYNAMIC_VOLUME)
+ 		mtd->size = vol->usable_leb_size * vol->reserved_pebs;
++	else
++		mtd->size = vol->used_bytes;
+ 
+ 	if (add_mtd_device(mtd)) {
+ 		ubi_err("cannot not add MTD device\n");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/io.c avr32-2.6/drivers/mtd/ubi/io.c
+--- linux-2.6.25.6/drivers/mtd/ubi/io.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/io.c	2008-06-12 15:03:59.587815297 +0200
+@@ -631,6 +631,8 @@
+ 
+ 	dbg_io("read EC header from PEB %d", pnum);
+ 	ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
++	if (UBI_IO_DEBUG)
++		verbose = 1;
+ 
+ 	err = ubi_io_read(ubi, ec_hdr, pnum, 0, UBI_EC_HDR_SIZE);
+ 	if (err) {
+@@ -904,6 +906,8 @@
+ 
+ 	dbg_io("read VID header from PEB %d", pnum);
+ 	ubi_assert(pnum >= 0 &&  pnum < ubi->peb_count);
++	if (UBI_IO_DEBUG)
++		verbose = 1;
+ 
+ 	p = (char *)vid_hdr - ubi->vid_hdr_shift;
+ 	err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset,
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/kapi.c avr32-2.6/drivers/mtd/ubi/kapi.c
+--- linux-2.6.25.6/drivers/mtd/ubi/kapi.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/kapi.c	2008-06-12 15:09:41.123815692 +0200
+@@ -397,8 +397,8 @@
+ 		return -EROFS;
+ 
+ 	if (lnum < 0 || lnum >= vol->reserved_pebs || offset < 0 || len < 0 ||
+-	    offset + len > vol->usable_leb_size || offset % ubi->min_io_size ||
+-	    len % ubi->min_io_size)
++	    offset + len > vol->usable_leb_size ||
++	    offset & (ubi->min_io_size - 1) || len & (ubi->min_io_size - 1))
+ 		return -EINVAL;
+ 
+ 	if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
+@@ -447,7 +447,7 @@
+ 		return -EROFS;
+ 
+ 	if (lnum < 0 || lnum >= vol->reserved_pebs || len < 0 ||
+-	    len > vol->usable_leb_size || len % ubi->min_io_size)
++	    len > vol->usable_leb_size || len & (ubi->min_io_size - 1))
+ 		return -EINVAL;
+ 
+ 	if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/Kconfig avr32-2.6/drivers/mtd/ubi/Kconfig
+--- linux-2.6.25.6/drivers/mtd/ubi/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/Kconfig	2008-06-12 15:03:59.583815905 +0200
+@@ -24,8 +24,13 @@
+ 	  erase counter value and the lowest erase counter value of eraseblocks
+ 	  of UBI devices. When this threshold is exceeded, UBI starts performing
+ 	  wear leveling by means of moving data from eraseblock with low erase
+-	  counter to eraseblocks with high erase counter. Leave the default
+-	  value if unsure.
++	  counter to eraseblocks with high erase counter.
++
++	  The default value should be OK for SLC NAND flashes, NOR flashes and
++	  other flashes which have eraseblock life-cycle 100000 or more.
++	  However, in case of MLC NAND flashes which typically have eraseblock
++	  life-cycle less then 10000, the threshold should be lessened (e.g.,
++	  to 128 or 256, although it does not have to be power of 2).
+ 
+ config MTD_UBI_BEB_RESERVE
+ 	int "Percentage of reserved eraseblocks for bad eraseblocks handling"
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/misc.c avr32-2.6/drivers/mtd/ubi/misc.c
+--- linux-2.6.25.6/drivers/mtd/ubi/misc.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/misc.c	2008-06-12 15:09:41.123815692 +0200
+@@ -37,7 +37,7 @@
+ {
+ 	int i;
+ 
+-	ubi_assert(length % ubi->min_io_size == 0);
++	ubi_assert(!(length & (ubi->min_io_size - 1)));
+ 
+ 	for (i = length - 1; i >= 0; i--)
+ 		if (((const uint8_t *)buf)[i] != 0xFF)
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/scan.c avr32-2.6/drivers/mtd/ubi/scan.c
+--- linux-2.6.25.6/drivers/mtd/ubi/scan.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/scan.c	2008-06-12 15:03:59.587815297 +0200
+@@ -42,6 +42,7 @@
+ 
+ #include <linux/err.h>
+ #include <linux/crc32.h>
++#include <asm/div64.h>
+ #include "ubi.h"
  
- static void fixup_use_secsi(struct mtd_info *mtd, void *param)
-@@ -218,6 +222,7 @@
+ #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID
+@@ -92,27 +93,6 @@
  }
  
- static struct cfi_fixup cfi_fixup_table[] = {
-+	{ CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
- #ifdef AMD_BOOTLOC_BUG
- 	{ CFI_MFR_AMD, CFI_ID_ANY, fixup_amd_bootblock, NULL },
- #endif
-@@ -230,7 +235,6 @@
- #if !FORCE_WORD_WRITE
- 	{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, },
- #endif
--	{ CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
- 	{ 0, 0, NULL, NULL }
+ /**
+- * commit_to_mean_value - commit intermediate results to the final mean erase
+- * counter value.
+- * @si: scanning information
+- *
+- * This is a helper function which calculates partial mean erase counter mean
+- * value and adds it to the resulting mean value. As we can work only in
+- * integer arithmetic and we want to calculate the mean value of erase counter
+- * accurately, we first sum erase counter values in @si->ec_sum variable and
+- * count these components in @si->ec_count. If this temporary @si->ec_sum is
+- * going to overflow, we calculate the partial mean value
+- * (@si->ec_sum/@si->ec_count) and add it to @si->mean_ec.
+- */
+-static void commit_to_mean_value(struct ubi_scan_info *si)
+-{
+-	si->ec_sum /= si->ec_count;
+-	if (si->ec_sum % si->ec_count >= si->ec_count / 2)
+-		si->mean_ec += 1;
+-	si->mean_ec += si->ec_sum;
+-}
+-
+-/**
+  * validate_vid_hdr - check that volume identifier header is correct and
+  * consistent.
+  * @vid_hdr: the volume identifier header to check
+@@ -901,15 +881,8 @@
+ 
+ adjust_mean_ec:
+ 	if (!ec_corr) {
+-		if (si->ec_sum + ec < ec) {
+-			commit_to_mean_value(si);
+-			si->ec_sum = 0;
+-			si->ec_count = 0;
+-		} else {
+-			si->ec_sum += ec;
+-			si->ec_count += 1;
+-		}
+-
++		si->ec_sum += ec;
++		si->ec_count += 1;
+ 		if (ec > si->max_ec)
+ 			si->max_ec = ec;
+ 		if (ec < si->min_ec)
+@@ -965,9 +938,11 @@
+ 
+ 	dbg_msg("scanning is finished");
+ 
+-	/* Finish mean erase counter calculations */
+-	if (si->ec_count)
+-		commit_to_mean_value(si);
++	/* Calculate mean erase counter */
++	if (si->ec_count) {
++		do_div(si->ec_sum, si->ec_count);
++		si->mean_ec = si->ec_sum;
++	}
+ 
+ 	if (si->is_empty)
+ 		ubi_msg("empty MTD device detected");
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/scan.h avr32-2.6/drivers/mtd/ubi/scan.h
+--- linux-2.6.25.6/drivers/mtd/ubi/scan.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/scan.h	2008-06-12 15:03:59.587815297 +0200
+@@ -124,7 +124,7 @@
+ 	int max_ec;
+ 	unsigned long long max_sqnum;
+ 	int mean_ec;
+-	int ec_sum;
++	uint64_t ec_sum;
+ 	int ec_count;
  };
- static struct cfi_fixup jedec_fixup_table[] = {
---- /dev/null
-+++ b/drivers/pcmcia/at32_cf.c
+ 
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/ubi.h avr32-2.6/drivers/mtd/ubi/ubi.h
+--- linux-2.6.25.6/drivers/mtd/ubi/ubi.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/ubi.h	2008-06-12 15:09:41.123815692 +0200
+@@ -37,10 +37,9 @@
+ #include <linux/string.h>
+ #include <linux/vmalloc.h>
+ #include <linux/mtd/mtd.h>
+-
+-#include <mtd/ubi-header.h>
+ #include <linux/mtd/ubi.h>
+ 
++#include "ubi-media.h"
+ #include "scan.h"
+ #include "debug.h"
+ 
+@@ -478,7 +477,6 @@
+ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
+ 		     struct ubi_vid_hdr *vid_hdr);
+ int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si);
+-void ubi_eba_close(const struct ubi_device *ubi);
+ 
+ /* wl.c */
+ int ubi_wl_get_peb(struct ubi_device *ubi, int dtype);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/ubi-media.h avr32-2.6/drivers/mtd/ubi/ubi-media.h
+--- linux-2.6.25.6/drivers/mtd/ubi/ubi-media.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/mtd/ubi/ubi-media.h	2008-06-12 15:03:59.587815297 +0200
+@@ -0,0 +1,372 @@
++/*
++ * Copyright (c) International Business Machines Corp., 2006
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
++ * the GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Thomas Gleixner
++ *          Frank Haverkamp
++ *          Oliver Lohmann
++ *          Andreas Arnez
++ */
++
++/*
++ * This file defines the layout of UBI headers and all the other UBI on-flash
++ * data structures.
++ */
++
++#ifndef __UBI_MEDIA_H__
++#define __UBI_MEDIA_H__
++
++#include <asm/byteorder.h>
++
++/* The version of UBI images supported by this implementation */
++#define UBI_VERSION 1
++
++/* The highest erase counter value supported by this implementation */
++#define UBI_MAX_ERASECOUNTER 0x7FFFFFFF
++
++/* The initial CRC32 value used when calculating CRC checksums */
++#define UBI_CRC32_INIT 0xFFFFFFFFU
++
++/* Erase counter header magic number (ASCII "UBI#") */
++#define UBI_EC_HDR_MAGIC  0x55424923
++/* Volume identifier header magic number (ASCII "UBI!") */
++#define UBI_VID_HDR_MAGIC 0x55424921
++
++/*
++ * Volume type constants used in the volume identifier header.
++ *
++ * @UBI_VID_DYNAMIC: dynamic volume
++ * @UBI_VID_STATIC: static volume
++ */
++enum {
++	UBI_VID_DYNAMIC = 1,
++	UBI_VID_STATIC  = 2
++};
++
++/*
++ * Volume flags used in the volume table record.
++ *
++ * @UBI_VTBL_AUTORESIZE_FLG: auto-resize this volume
++ *
++ * %UBI_VTBL_AUTORESIZE_FLG flag can be set only for one volume in the volume
++ * table. UBI automatically re-sizes the volume which has this flag and makes
++ * the volume to be of largest possible size. This means that if after the
++ * initialization UBI finds out that there are available physical eraseblocks
++ * present on the device, it automatically appends all of them to the volume
++ * (the physical eraseblocks reserved for bad eraseblocks handling and other
++ * reserved physical eraseblocks are not taken). So, if there is a volume with
++ * the %UBI_VTBL_AUTORESIZE_FLG flag set, the amount of available logical
++ * eraseblocks will be zero after UBI is loaded, because all of them will be
++ * reserved for this volume. Note, the %UBI_VTBL_AUTORESIZE_FLG bit is cleared
++ * after the volume had been initialized.
++ *
++ * The auto-resize feature is useful for device production purposes. For
++ * example, different NAND flash chips may have different amount of initial bad
++ * eraseblocks, depending of particular chip instance. Manufacturers of NAND
++ * chips usually guarantee that the amount of initial bad eraseblocks does not
++ * exceed certain percent, e.g. 2%. When one creates an UBI image which will be
++ * flashed to the end devices in production, he does not know the exact amount
++ * of good physical eraseblocks the NAND chip on the device will have, but this
++ * number is required to calculate the volume sized and put them to the volume
++ * table of the UBI image. In this case, one of the volumes (e.g., the one
++ * which will store the root file system) is marked as "auto-resizable", and
++ * UBI will adjust its size on the first boot if needed.
++ *
++ * Note, first UBI reserves some amount of physical eraseblocks for bad
++ * eraseblock handling, and then re-sizes the volume, not vice-versa. This
++ * means that the pool of reserved physical eraseblocks will always be present.
++ */
++enum {
++	UBI_VTBL_AUTORESIZE_FLG = 0x01,
++};
++
++/*
++ * Compatibility constants used by internal volumes.
++ *
++ * @UBI_COMPAT_DELETE: delete this internal volume before anything is written
++ * to the flash
++ * @UBI_COMPAT_RO: attach this device in read-only mode
++ * @UBI_COMPAT_PRESERVE: preserve this internal volume - do not touch its
++ * physical eraseblocks, don't allow the wear-leveling unit to move them
++ * @UBI_COMPAT_REJECT: reject this UBI image
++ */
++enum {
++	UBI_COMPAT_DELETE   = 1,
++	UBI_COMPAT_RO       = 2,
++	UBI_COMPAT_PRESERVE = 4,
++	UBI_COMPAT_REJECT   = 5
++};
++
++/* Sizes of UBI headers */
++#define UBI_EC_HDR_SIZE  sizeof(struct ubi_ec_hdr)
++#define UBI_VID_HDR_SIZE sizeof(struct ubi_vid_hdr)
++
++/* Sizes of UBI headers without the ending CRC */
++#define UBI_EC_HDR_SIZE_CRC  (UBI_EC_HDR_SIZE  - sizeof(__be32))
++#define UBI_VID_HDR_SIZE_CRC (UBI_VID_HDR_SIZE - sizeof(__be32))
++
++/**
++ * struct ubi_ec_hdr - UBI erase counter header.
++ * @magic: erase counter header magic number (%UBI_EC_HDR_MAGIC)
++ * @version: version of UBI implementation which is supposed to accept this
++ * UBI image
++ * @padding1: reserved for future, zeroes
++ * @ec: the erase counter
++ * @vid_hdr_offset: where the VID header starts
++ * @data_offset: where the user data start
++ * @padding2: reserved for future, zeroes
++ * @hdr_crc: erase counter header CRC checksum
++ *
++ * The erase counter header takes 64 bytes and has a plenty of unused space for
++ * future usage. The unused fields are zeroed. The @version field is used to
++ * indicate the version of UBI implementation which is supposed to be able to
++ * work with this UBI image. If @version is greater then the current UBI
++ * version, the image is rejected. This may be useful in future if something
++ * is changed radically. This field is duplicated in the volume identifier
++ * header.
++ *
++ * The @vid_hdr_offset and @data_offset fields contain the offset of the the
++ * volume identifier header and user data, relative to the beginning of the
++ * physical eraseblock. These values have to be the same for all physical
++ * eraseblocks.
++ */
++struct ubi_ec_hdr {
++	__be32  magic;
++	__u8    version;
++	__u8    padding1[3];
++	__be64  ec; /* Warning: the current limit is 31-bit anyway! */
++	__be32  vid_hdr_offset;
++	__be32  data_offset;
++	__u8    padding2[36];
++	__be32  hdr_crc;
++} __attribute__ ((packed));
++
++/**
++ * struct ubi_vid_hdr - on-flash UBI volume identifier header.
++ * @magic: volume identifier header magic number (%UBI_VID_HDR_MAGIC)
++ * @version: UBI implementation version which is supposed to accept this UBI
++ * image (%UBI_VERSION)
++ * @vol_type: volume type (%UBI_VID_DYNAMIC or %UBI_VID_STATIC)
++ * @copy_flag: if this logical eraseblock was copied from another physical
++ * eraseblock (for wear-leveling reasons)
++ * @compat: compatibility of this volume (%0, %UBI_COMPAT_DELETE,
++ * %UBI_COMPAT_IGNORE, %UBI_COMPAT_PRESERVE, or %UBI_COMPAT_REJECT)
++ * @vol_id: ID of this volume
++ * @lnum: logical eraseblock number
++ * @leb_ver: version of this logical eraseblock (IMPORTANT: obsolete, to be
++ * removed, kept only for not breaking older UBI users)
++ * @data_size: how many bytes of data this logical eraseblock contains
++ * @used_ebs: total number of used logical eraseblocks in this volume
++ * @data_pad: how many bytes at the end of this physical eraseblock are not
++ * used
++ * @data_crc: CRC checksum of the data stored in this logical eraseblock
++ * @padding1: reserved for future, zeroes
++ * @sqnum: sequence number
++ * @padding2: reserved for future, zeroes
++ * @hdr_crc: volume identifier header CRC checksum
++ *
++ * The @sqnum is the value of the global sequence counter at the time when this
++ * VID header was created. The global sequence counter is incremented each time
++ * UBI writes a new VID header to the flash, i.e. when it maps a logical
++ * eraseblock to a new physical eraseblock. The global sequence counter is an
++ * unsigned 64-bit integer and we assume it never overflows. The @sqnum
++ * (sequence number) is used to distinguish between older and newer versions of
++ * logical eraseblocks.
++ *
++ * There are 2 situations when there may be more then one physical eraseblock
++ * corresponding to the same logical eraseblock, i.e., having the same @vol_id
++ * and @lnum values in the volume identifier header. Suppose we have a logical
++ * eraseblock L and it is mapped to the physical eraseblock P.
++ *
++ * 1. Because UBI may erase physical eraseblocks asynchronously, the following
++ * situation is possible: L is asynchronously erased, so P is scheduled for
++ * erasure, then L is written to,i.e. mapped to another physical eraseblock P1,
++ * so P1 is written to, then an unclean reboot happens. Result - there are 2
++ * physical eraseblocks P and P1 corresponding to the same logical eraseblock
++ * L. But P1 has greater sequence number, so UBI picks P1 when it attaches the
++ * flash.
++ *
++ * 2. From time to time UBI moves logical eraseblocks to other physical
++ * eraseblocks for wear-leveling reasons. If, for example, UBI moves L from P
++ * to P1, and an unclean reboot happens before P is physically erased, there
++ * are two physical eraseblocks P and P1 corresponding to L and UBI has to
++ * select one of them when the flash is attached. The @sqnum field says which
++ * PEB is the original (obviously P will have lower @sqnum) and the copy. But
++ * it is not enough to select the physical eraseblock with the higher sequence
++ * number, because the unclean reboot could have happen in the middle of the
++ * copying process, so the data in P is corrupted. It is also not enough to
++ * just select the physical eraseblock with lower sequence number, because the
++ * data there may be old (consider a case if more data was added to P1 after
++ * the copying). Moreover, the unclean reboot may happen when the erasure of P
++ * was just started, so it result in unstable P, which is "mostly" OK, but
++ * still has unstable bits.
++ *
++ * UBI uses the @copy_flag field to indicate that this logical eraseblock is a
++ * copy. UBI also calculates data CRC when the data is moved and stores it at
++ * the @data_crc field of the copy (P1). So when UBI needs to pick one physical
++ * eraseblock of two (P or P1), the @copy_flag of the newer one (P1) is
++ * examined. If it is cleared, the situation* is simple and the newer one is
++ * picked. If it is set, the data CRC of the copy (P1) is examined. If the CRC
++ * checksum is correct, this physical eraseblock is selected (P1). Otherwise
++ * the older one (P) is selected.
++ *
++ * Note, there is an obsolete @leb_ver field which was used instead of @sqnum
++ * in the past. But it is not used anymore and we keep it in order to be able
++ * to deal with old UBI images. It will be removed at some point.
++ *
++ * There are 2 sorts of volumes in UBI: user volumes and internal volumes.
++ * Internal volumes are not seen from outside and are used for various internal
++ * UBI purposes. In this implementation there is only one internal volume - the
++ * layout volume. Internal volumes are the main mechanism of UBI extensions.
++ * For example, in future one may introduce a journal internal volume. Internal
++ * volumes have their own reserved range of IDs.
++ *
++ * The @compat field is only used for internal volumes and contains the "degree
++ * of their compatibility". It is always zero for user volumes. This field
++ * provides a mechanism to introduce UBI extensions and to be still compatible
++ * with older UBI binaries. For example, if someone introduced a journal in
++ * future, he would probably use %UBI_COMPAT_DELETE compatibility for the
++ * journal volume.  And in this case, older UBI binaries, which know nothing
++ * about the journal volume, would just delete this volume and work perfectly
++ * fine. This is similar to what Ext2fs does when it is fed by an Ext3fs image
++ * - it just ignores the Ext3fs journal.
++ *
++ * The @data_crc field contains the CRC checksum of the contents of the logical
++ * eraseblock if this is a static volume. In case of dynamic volumes, it does
++ * not contain the CRC checksum as a rule. The only exception is when the
++ * data of the physical eraseblock was moved by the wear-leveling unit, then
++ * the wear-leveling unit calculates the data CRC and stores it in the
++ * @data_crc field. And of course, the @copy_flag is %in this case.
++ *
++ * The @data_size field is used only for static volumes because UBI has to know
++ * how many bytes of data are stored in this eraseblock. For dynamic volumes,
++ * this field usually contains zero. The only exception is when the data of the
++ * physical eraseblock was moved to another physical eraseblock for
++ * wear-leveling reasons. In this case, UBI calculates CRC checksum of the
++ * contents and uses both @data_crc and @data_size fields. In this case, the
++ * @data_size field contains data size.
++ *
++ * The @used_ebs field is used only for static volumes and indicates how many
++ * eraseblocks the data of the volume takes. For dynamic volumes this field is
++ * not used and always contains zero.
++ *
++ * The @data_pad is calculated when volumes are created using the alignment
++ * parameter. So, effectively, the @data_pad field reduces the size of logical
++ * eraseblocks of this volume. This is very handy when one uses block-oriented
++ * software (say, cramfs) on top of the UBI volume.
++ */
++struct ubi_vid_hdr {
++	__be32  magic;
++	__u8    version;
++	__u8    vol_type;
++	__u8    copy_flag;
++	__u8    compat;
++	__be32  vol_id;
++	__be32  lnum;
++	__be32  leb_ver; /* obsolete, to be removed, don't use */
++	__be32  data_size;
++	__be32  used_ebs;
++	__be32  data_pad;
++	__be32  data_crc;
++	__u8    padding1[4];
++	__be64  sqnum;
++	__u8    padding2[12];
++	__be32  hdr_crc;
++} __attribute__ ((packed));
++
++/* Internal UBI volumes count */
++#define UBI_INT_VOL_COUNT 1
++
++/*
++ * Starting ID of internal volumes. There is reserved room for 4096 internal
++ * volumes.
++ */
++#define UBI_INTERNAL_VOL_START (0x7FFFFFFF - 4096)
++
++/* The layout volume contains the volume table */
++
++#define UBI_LAYOUT_VOLUME_ID     UBI_INTERNAL_VOL_START
++#define UBI_LAYOUT_VOLUME_TYPE   UBI_VID_DYNAMIC
++#define UBI_LAYOUT_VOLUME_ALIGN  1
++#define UBI_LAYOUT_VOLUME_EBS    2
++#define UBI_LAYOUT_VOLUME_NAME   "layout volume"
++#define UBI_LAYOUT_VOLUME_COMPAT UBI_COMPAT_REJECT
++
++/* The maximum number of volumes per one UBI device */
++#define UBI_MAX_VOLUMES 128
++
++/* The maximum volume name length */
++#define UBI_VOL_NAME_MAX 127
++
++/* Size of the volume table record */
++#define UBI_VTBL_RECORD_SIZE sizeof(struct ubi_vtbl_record)
++
++/* Size of the volume table record without the ending CRC */
++#define UBI_VTBL_RECORD_SIZE_CRC (UBI_VTBL_RECORD_SIZE - sizeof(__be32))
++
++/**
++ * struct ubi_vtbl_record - a record in the volume table.
++ * @reserved_pebs: how many physical eraseblocks are reserved for this volume
++ * @alignment: volume alignment
++ * @data_pad: how many bytes are unused at the end of the each physical
++ * eraseblock to satisfy the requested alignment
++ * @vol_type: volume type (%UBI_DYNAMIC_VOLUME or %UBI_STATIC_VOLUME)
++ * @upd_marker: if volume update was started but not finished
++ * @name_len: volume name length
++ * @name: the volume name
++ * @flags: volume flags (%UBI_VTBL_AUTORESIZE_FLG)
++ * @padding: reserved, zeroes
++ * @crc: a CRC32 checksum of the record
++ *
++ * The volume table records are stored in the volume table, which is stored in
++ * the layout volume. The layout volume consists of 2 logical eraseblock, each
++ * of which contains a copy of the volume table (i.e., the volume table is
++ * duplicated). The volume table is an array of &struct ubi_vtbl_record
++ * objects indexed by the volume ID.
++ *
++ * If the size of the logical eraseblock is large enough to fit
++ * %UBI_MAX_VOLUMES records, the volume table contains %UBI_MAX_VOLUMES
++ * records. Otherwise, it contains as many records as it can fit (i.e., size of
++ * logical eraseblock divided by sizeof(struct ubi_vtbl_record)).
++ *
++ * The @upd_marker flag is used to implement volume update. It is set to %1
++ * before update and set to %0 after the update. So if the update operation was
++ * interrupted, UBI knows that the volume is corrupted.
++ *
++ * The @alignment field is specified when the volume is created and cannot be
++ * later changed. It may be useful, for example, when a block-oriented file
++ * system works on top of UBI. The @data_pad field is calculated using the
++ * logical eraseblock size and @alignment. The alignment must be multiple to the
++ * minimal flash I/O unit. If @alignment is 1, all the available space of
++ * the physical eraseblocks is used.
++ *
++ * Empty records contain all zeroes and the CRC checksum of those zeroes.
++ */
++struct ubi_vtbl_record {
++	__be32  reserved_pebs;
++	__be32  alignment;
++	__be32  data_pad;
++	__u8    vol_type;
++	__u8    upd_marker;
++	__be16  name_len;
++	__u8    name[UBI_VOL_NAME_MAX+1];
++	__u8    flags;
++	__u8    padding[23];
++	__be32  crc;
++} __attribute__ ((packed));
++
++#endif /* !__UBI_MEDIA_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/upd.c avr32-2.6/drivers/mtd/ubi/upd.c
+--- linux-2.6.25.6/drivers/mtd/ubi/upd.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/upd.c	2008-06-12 15:09:41.123815692 +0200
+@@ -237,10 +237,10 @@
+ 	int err;
+ 
+ 	if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
+-		len = ALIGN(len, ubi->min_io_size);
+-		memset(buf + len, 0xFF, len - len);
++		int l = ALIGN(len, ubi->min_io_size);
+ 
+-		len = ubi_calc_data_len(ubi, buf, len);
++		memset(buf + len, 0xFF, l - len);
++		len = ubi_calc_data_len(ubi, buf, l);
+ 		if (len == 0) {
+ 			dbg_msg("all %d bytes contain 0xFF - skip", len);
+ 			return 0;
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/vmt.c avr32-2.6/drivers/mtd/ubi/vmt.c
+--- linux-2.6.25.6/drivers/mtd/ubi/vmt.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/vmt.c	2008-06-12 15:09:41.123815692 +0200
+@@ -127,6 +127,7 @@
+ {
+ 	struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
+ 
++	kfree(vol->eba_tbl);
+ 	kfree(vol);
+ }
+ 
+@@ -201,7 +202,7 @@
+  */
+ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
+ {
+-	int i, err, vol_id = req->vol_id, dont_free = 0;
++	int i, err, vol_id = req->vol_id, do_free = 1;
+ 	struct ubi_volume *vol;
+ 	struct ubi_vtbl_record vtbl_rec;
+ 	uint64_t bytes;
+@@ -365,14 +366,14 @@
+ 
+ out_sysfs:
+ 	/*
+-	 * We have registered our device, we should not free the volume*
++	 * We have registered our device, we should not free the volume
+ 	 * description object in this function in case of an error - it is
+ 	 * freed by the release function.
+ 	 *
+ 	 * Get device reference to prevent the release function from being
+ 	 * called just after sysfs has been closed.
+ 	 */
+-	dont_free = 1;
++	do_free = 0;
+ 	get_device(&vol->dev);
+ 	volume_sysfs_close(vol);
+ out_gluebi:
+@@ -382,17 +383,18 @@
+ out_cdev:
+ 	cdev_del(&vol->cdev);
+ out_mapping:
+-	kfree(vol->eba_tbl);
++	if (do_free)
++		kfree(vol->eba_tbl);
+ out_acc:
+ 	spin_lock(&ubi->volumes_lock);
+ 	ubi->rsvd_pebs -= vol->reserved_pebs;
+ 	ubi->avail_pebs += vol->reserved_pebs;
+ out_unlock:
+ 	spin_unlock(&ubi->volumes_lock);
+-	if (dont_free)
+-		put_device(&vol->dev);
+-	else
++	if (do_free)
+ 		kfree(vol);
++	else
++		put_device(&vol->dev);
+ 	ubi_err("cannot create volume %d, error %d", vol_id, err);
+ 	return err;
+ }
+@@ -445,8 +447,6 @@
+ 			goto out_err;
+ 	}
+ 
+-	kfree(vol->eba_tbl);
+-	vol->eba_tbl = NULL;
+ 	cdev_del(&vol->cdev);
+ 	volume_sysfs_close(vol);
+ 
+@@ -727,7 +727,7 @@
+ 		goto fail;
+ 	}
+ 
+-	n = vol->alignment % ubi->min_io_size;
++	n = vol->alignment & (ubi->min_io_size - 1);
+ 	if (vol->alignment != 1 && n) {
+ 		ubi_err("alignment is not multiple of min I/O unit");
+ 		goto fail;
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/vtbl.c avr32-2.6/drivers/mtd/ubi/vtbl.c
+--- linux-2.6.25.6/drivers/mtd/ubi/vtbl.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/vtbl.c	2008-06-12 15:09:41.127815922 +0200
+@@ -127,7 +127,7 @@
+ 		      const struct ubi_vtbl_record *vtbl)
+ {
+ 	int i, n, reserved_pebs, alignment, data_pad, vol_type, name_len;
+-	int upd_marker;
++	int upd_marker, err;
+ 	uint32_t crc;
+ 	const char *name;
+ 
+@@ -153,7 +153,7 @@
+ 		if (reserved_pebs == 0) {
+ 			if (memcmp(&vtbl[i], &empty_vtbl_record,
+ 						UBI_VTBL_RECORD_SIZE)) {
+-				dbg_err("bad empty record");
++				err = 2;
+ 				goto bad;
+ 			}
+ 			continue;
+@@ -161,56 +161,57 @@
+ 
+ 		if (reserved_pebs < 0 || alignment < 0 || data_pad < 0 ||
+ 		    name_len < 0) {
+-			dbg_err("negative values");
++			err = 3;
+ 			goto bad;
+ 		}
+ 
+ 		if (alignment > ubi->leb_size || alignment == 0) {
+-			dbg_err("bad alignment");
++			err = 4;
+ 			goto bad;
+ 		}
+ 
+-		n = alignment % ubi->min_io_size;
++		n = alignment & (ubi->min_io_size - 1);
+ 		if (alignment != 1 && n) {
+-			dbg_err("alignment is not multiple of min I/O unit");
++			err = 5;
+ 			goto bad;
+ 		}
+ 
+ 		n = ubi->leb_size % alignment;
+ 		if (data_pad != n) {
+ 			dbg_err("bad data_pad, has to be %d", n);
++			err = 6;
+ 			goto bad;
+ 		}
+ 
+ 		if (vol_type != UBI_VID_DYNAMIC && vol_type != UBI_VID_STATIC) {
+-			dbg_err("bad vol_type");
++			err = 7;
+ 			goto bad;
+ 		}
+ 
+ 		if (upd_marker != 0 && upd_marker != 1) {
+-			dbg_err("bad upd_marker");
++			err = 8;
+ 			goto bad;
+ 		}
+ 
+ 		if (reserved_pebs > ubi->good_peb_count) {
+ 			dbg_err("too large reserved_pebs, good PEBs %d",
+ 				ubi->good_peb_count);
++			err = 9;
+ 			goto bad;
+ 		}
+ 
+ 		if (name_len > UBI_VOL_NAME_MAX) {
+-			dbg_err("too long volume name, max %d",
+-				UBI_VOL_NAME_MAX);
++			err = 10;
+ 			goto bad;
+ 		}
+ 
+ 		if (name[0] == '\0') {
+-			dbg_err("NULL volume name");
++			err = 11;
+ 			goto bad;
+ 		}
+ 
+ 		if (name_len != strnlen(name, name_len + 1)) {
+-			dbg_err("bad name_len");
++			err = 12;
+ 			goto bad;
+ 		}
+ 	}
+@@ -235,7 +236,7 @@
+ 	return 0;
+ 
+ bad:
+-	ubi_err("volume table check failed, record %d", i);
++	ubi_err("volume table check failed: record %d, error %d", i, err);
+ 	ubi_dbg_dump_vtbl_record(&vtbl[i], i);
+ 	return -EINVAL;
+ }
+@@ -384,7 +385,16 @@
+ 		err = ubi_io_read_data(ubi, leb[seb->lnum], seb->pnum, 0,
+ 				       ubi->vtbl_size);
+ 		if (err == UBI_IO_BITFLIPS || err == -EBADMSG)
+-			/* Scrub the PEB later */
++			/*
++			 * Scrub the PEB later. Note, -EBADMSG indicates an
++			 * uncorrectable ECC error, but we have our own CRC and
++			 * the data will be checked later. If the data is OK,
++			 * the PEB will be scrubbed (because we set
++			 * seb->scrub). If the data is not OK, the contents of
++			 * the PEB will be recovered from the second copy, and
++			 * seb->scrub will be cleared in
++			 * 'ubi_scan_add_used()'.
++			 */
+ 			seb->scrub = 1;
+ 		else if (err)
+ 			goto out_free;
+@@ -620,30 +630,32 @@
+ static int check_sv(const struct ubi_volume *vol,
+ 		    const struct ubi_scan_volume *sv)
+ {
++	int err;
++
+ 	if (sv->highest_lnum >= vol->reserved_pebs) {
+-		dbg_err("bad highest_lnum");
++		err = 1;
+ 		goto bad;
+ 	}
+ 	if (sv->leb_count > vol->reserved_pebs) {
+-		dbg_err("bad leb_count");
++		err = 2;
+ 		goto bad;
+ 	}
+ 	if (sv->vol_type != vol->vol_type) {
+-		dbg_err("bad vol_type");
++		err = 3;
+ 		goto bad;
+ 	}
+ 	if (sv->used_ebs > vol->reserved_pebs) {
+-		dbg_err("bad used_ebs");
++		err = 4;
+ 		goto bad;
+ 	}
+ 	if (sv->data_pad != vol->data_pad) {
+-		dbg_err("bad data_pad");
++		err = 5;
+ 		goto bad;
+ 	}
+ 	return 0;
+ 
+ bad:
+-	ubi_err("bad scanning information");
++	ubi_err("bad scanning information, error %d", err);
+ 	ubi_dbg_dump_sv(sv);
+ 	ubi_dbg_dump_vol_info(vol);
+ 	return -EINVAL;
+@@ -672,14 +684,13 @@
+ 		return -EINVAL;
+ 	}
+ 
+-	if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT&&
++	if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT &&
+ 	    si->highest_vol_id < UBI_INTERNAL_VOL_START) {
+ 		ubi_err("too large volume ID %d found by scanning",
+ 			si->highest_vol_id);
+ 		return -EINVAL;
+ 	}
+ 
+-
+ 	for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {
+ 		cond_resched();
+ 
+diff --exclude=.git -urN linux-2.6.25.6/drivers/mtd/ubi/wl.c avr32-2.6/drivers/mtd/ubi/wl.c
+--- linux-2.6.25.6/drivers/mtd/ubi/wl.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/mtd/ubi/wl.c	2008-06-12 15:09:41.127815922 +0200
+@@ -1368,7 +1368,7 @@
+ 		int err;
+ 
+ 		if (kthread_should_stop())
+-			goto out;
++			break;
+ 
+ 		if (try_to_freeze())
+ 			continue;
+@@ -1403,7 +1403,6 @@
+ 		cond_resched();
+ 	}
+ 
+-out:
+ 	dbg_wl("background thread \"%s\" is killed", ubi->bgt_name);
+ 	return 0;
+ }
+diff --exclude=.git -urN linux-2.6.25.6/drivers/net/macb.c avr32-2.6/drivers/net/macb.c
+--- linux-2.6.25.6/drivers/net/macb.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/net/macb.c	2008-06-12 15:09:41.343816061 +0200
+@@ -1277,8 +1277,45 @@
+ 	return 0;
+ }
+ 
++#ifdef CONFIG_PM
++static int macb_suspend(struct platform_device *pdev, pm_message_t state)
++{
++	struct net_device *netdev = platform_get_drvdata(pdev);
++	struct macb *bp = netdev_priv(netdev);
++
++	netif_device_detach(netdev);
++
++#ifndef CONFIG_ARCH_AT91
++	clk_disable(bp->hclk);
++#endif
++	clk_disable(bp->pclk);
++
++	return 0;
++}
++
++static int macb_resume(struct platform_device *pdev)
++{
++	struct net_device *netdev = platform_get_drvdata(pdev);
++	struct macb *bp = netdev_priv(netdev);
++
++	clk_enable(bp->pclk);
++#ifndef CONFIG_ARCH_AT91
++	clk_enable(bp->hclk);
++#endif
++
++	netif_device_attach(netdev);
++
++	return 0;
++}
++#else
++#define macb_suspend	NULL
++#define macb_resume	NULL
++#endif
++
+ static struct platform_driver macb_driver = {
+ 	.remove		= __exit_p(macb_remove),
++	.suspend	= macb_suspend,
++	.resume		= macb_resume,
+ 	.driver		= {
+ 		.name		= "macb",
+ 	},
+diff --exclude=.git -urN linux-2.6.25.6/drivers/parport/Kconfig avr32-2.6/drivers/parport/Kconfig
+--- linux-2.6.25.6/drivers/parport/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/parport/Kconfig	2008-06-12 15:04:01.310815768 +0200
+@@ -36,7 +36,7 @@
+ config PARPORT_PC
+ 	tristate "PC-style hardware"
+ 	depends on (!SPARC64 || PCI) && !SPARC32 && !M32R && !FRV && \
+-		(!M68K || ISA) && !MN10300
++		(!M68K || ISA) && !MN10300 && !AVR32
+ 	---help---
+ 	  You should say Y here if you have a PC-style parallel port. All
+ 	  IBM PC compatible computers and some Alphas have PC-style
+diff --exclude=.git -urN linux-2.6.25.6/drivers/pcmcia/at32_cf.c avr32-2.6/drivers/pcmcia/at32_cf.c
+--- linux-2.6.25.6/drivers/pcmcia/at32_cf.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/drivers/pcmcia/at32_cf.c	2008-06-12 15:09:42.047816626 +0200
 @@ -0,0 +1,533 @@
 +/*
 + * Driver for AVR32 Static Memory Controller: CompactFlash support
@@ -16043,9 +14160,10 @@
 +MODULE_LICENSE("GPL");
 +MODULE_DESCRIPTION("Driver for SMC PCMCIA interface");
 +MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
---- a/drivers/pcmcia/Kconfig
-+++ b/drivers/pcmcia/Kconfig
-@@ -276,6 +276,13 @@
+diff --exclude=.git -urN linux-2.6.25.6/drivers/pcmcia/Kconfig avr32-2.6/drivers/pcmcia/Kconfig
+--- linux-2.6.25.6/drivers/pcmcia/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/pcmcia/Kconfig	2008-06-12 15:09:42.047816626 +0200
+@@ -277,6 +277,13 @@
  	  Say Y here to support the CompactFlash controller on the
  	  PA Semi Electra eval board.
  
@@ -16059,8 +14177,9 @@
  config PCCARD_NONSTATIC
  	tristate
  
---- a/drivers/pcmcia/Makefile
-+++ b/drivers/pcmcia/Makefile
+diff --exclude=.git -urN linux-2.6.25.6/drivers/pcmcia/Makefile avr32-2.6/drivers/pcmcia/Makefile
+--- linux-2.6.25.6/drivers/pcmcia/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/pcmcia/Makefile	2008-06-12 15:09:42.047816626 +0200
 @@ -38,6 +38,7 @@
  obj-$(CONFIG_OMAP_CF)				+= omap_cf.o
  obj-$(CONFIG_AT91_CF)				+= at91_cf.o
@@ -16069,1525 +14188,192 @@
  
  sa11xx_core-y					+= soc_common.o sa11xx_base.o
  pxa2xx_core-y					+= soc_common.o pxa2xx_base.o
---- a/drivers/serial/atmel_serial.c
-+++ b/drivers/serial/atmel_serial.c
-@@ -7,6 +7,8 @@
-  *  Based on drivers/char/serial_sa1100.c, by Deep Blue Solutions Ltd.
-  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
-  *
-+ *  DMA support added by Chip Coldwell.
-+ *
-  * This program is free software; you can redistribute it and/or modify
-  * it under the terms of the GNU General Public License as published by
-  * the Free Software Foundation; either version 2 of the License, or
-@@ -33,7 +35,9 @@
- #include <linux/sysrq.h>
- #include <linux/tty_flip.h>
- #include <linux/platform_device.h>
-+#include <linux/dma-mapping.h>
- #include <linux/atmel_pdc.h>
-+#include <linux/atmel_serial.h>
- 
- #include <asm/io.h>
- 
-@@ -45,7 +49,9 @@
- #include <asm/arch/gpio.h>
- #endif
- 
--#include "atmel_serial.h"
-+#define PDC_BUFFER_SIZE		512
-+/* Revisit: We should calculate this based on the actual port settings */
-+#define PDC_RX_TIMEOUT		(3 * 10)		/* 3 bytes */
- 
- #if defined(CONFIG_SERIAL_ATMEL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
- #define SUPPORT_SYSRQ
-@@ -74,6 +80,7 @@
- 
- #define ATMEL_ISR_PASS_LIMIT	256
- 
-+/* UART registers. CR is write-only, hence no GET macro */
- #define UART_PUT_CR(port,v)	__raw_writel(v, (port)->membase + ATMEL_US_CR)
- #define UART_GET_MR(port)	__raw_readl((port)->membase + ATMEL_US_MR)
- #define UART_PUT_MR(port,v)	__raw_writel(v, (port)->membase + ATMEL_US_MR)
-@@ -87,8 +94,6 @@
- #define UART_PUT_BRGR(port,v)	__raw_writel(v, (port)->membase + ATMEL_US_BRGR)
- #define UART_PUT_RTOR(port,v)	__raw_writel(v, (port)->membase + ATMEL_US_RTOR)
- 
--// #define UART_GET_CR(port)	__raw_readl((port)->membase + ATMEL_US_CR)		// is write-only
--
-  /* PDC registers */
- #define UART_PUT_PTCR(port,v)	__raw_writel(v, (port)->membase + ATMEL_PDC_PTCR)
- #define UART_GET_PTSR(port)	__raw_readl((port)->membase + ATMEL_PDC_PTSR)
-@@ -101,12 +106,24 @@
- 
- #define UART_PUT_TPR(port,v)	__raw_writel(v, (port)->membase + ATMEL_PDC_TPR)
- #define UART_PUT_TCR(port,v)	__raw_writel(v, (port)->membase + ATMEL_PDC_TCR)
--//#define UART_PUT_TNPR(port,v)	__raw_writel(v, (port)->membase + ATMEL_PDC_TNPR)
--//#define UART_PUT_TNCR(port,v)	__raw_writel(v, (port)->membase + ATMEL_PDC_TNCR)
- 
- static int (*atmel_open_hook)(struct uart_port *);
- static void (*atmel_close_hook)(struct uart_port *);
- 
-+struct atmel_dma_buffer {
-+	unsigned char	*buf;
-+	dma_addr_t	dma_addr;
-+	unsigned int	dma_size;
-+	unsigned int	ofs;
-+};
-+
-+struct atmel_uart_char {
-+	u16		status;
-+	u16		ch;
-+};
-+
-+#define ATMEL_SERIAL_RINGSIZE 1024
-+
- /*
-  * We wrap our port structure around the generic uart_port.
-  */
-@@ -115,6 +132,19 @@
- 	struct clk		*clk;		/* uart clock */
- 	unsigned short		suspended;	/* is port suspended? */
- 	int			break_active;	/* break being received */
-+
-+	short			use_dma_rx;	/* enable PDC receiver */
-+	short			pdc_rx_idx;	/* current PDC RX buffer */
-+	struct atmel_dma_buffer	pdc_rx[2];	/* PDC receier */
-+
-+	short			use_dma_tx;	/* enable PDC transmitter */
-+	struct atmel_dma_buffer	pdc_tx;		/* PDC transmitter */
-+
-+	struct tasklet_struct	tasklet;
-+	unsigned int		irq_status;
-+	unsigned int		irq_status_prev;
-+
-+	struct circ_buf		rx_ring;
+diff --exclude=.git -urN linux-2.6.25.6/drivers/serial/atmel_serial.c avr32-2.6/drivers/serial/atmel_serial.c
+--- linux-2.6.25.6/drivers/serial/atmel_serial.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/serial/atmel_serial.c	2008-06-12 15:09:42.514816054 +0200
+@@ -1440,6 +1440,15 @@
  };
  
- static struct atmel_uart_port atmel_ports[ATMEL_MAX_UART];
-@@ -123,6 +153,38 @@
- static struct console atmel_console;
- #endif
- 
-+static inline struct atmel_uart_port *
-+to_atmel_uart_port(struct uart_port *uart)
-+{
-+	return container_of(uart, struct atmel_uart_port, uart);
-+}
-+
-+#ifdef CONFIG_SERIAL_ATMEL_PDC
-+static bool atmel_use_dma_rx(struct uart_port *port)
-+{
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+
-+	return atmel_port->use_dma_rx;
-+}
-+
-+static bool atmel_use_dma_tx(struct uart_port *port)
+ #ifdef CONFIG_PM
++static bool atmel_serial_clk_will_stop(void)
 +{
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+
-+	return atmel_port->use_dma_tx;
-+}
++#ifdef CONFIG_ARCH_AT91
++	return at91_suspend_entering_slow_clock();
 +#else
-+static bool atmel_use_dma_rx(struct uart_port *port)
-+{
 +	return false;
-+}
-+
-+static bool atmel_use_dma_tx(struct uart_port *port)
-+{
-+	return false;
-+}
 +#endif
++}
 +
- /*
-  * Return TIOCSER_TEMT when transmitter FIFO and Shift register is empty.
-  */
-@@ -142,8 +204,8 @@
- #ifdef CONFIG_ARCH_AT91RM9200
- 	if (cpu_is_at91rm9200()) {
- 		/*
--		 * AT91RM9200 Errata #39: RTS0 is not internally connected to PA21.
--		 *  We need to drive the pin manually.
-+		 * AT91RM9200 Errata #39: RTS0 is not internally connected
-+		 * to PA21. We need to drive the pin manually.
- 		 */
- 		if (port->mapbase == AT91RM9200_BASE_US0) {
- 			if (mctrl & TIOCM_RTS)
-@@ -204,7 +266,12 @@
-  */
- static void atmel_stop_tx(struct uart_port *port)
- {
--	UART_PUT_IDR(port, ATMEL_US_TXRDY);
-+	if (atmel_use_dma_tx(port)) {
-+		/* disable PDC transmit */
-+		UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
-+		UART_PUT_IDR(port, ATMEL_US_ENDTX | ATMEL_US_TXBUFE);
-+	} else
-+		UART_PUT_IDR(port, ATMEL_US_TXRDY);
- }
- 
- /*
-@@ -212,7 +279,17 @@
-  */
- static void atmel_start_tx(struct uart_port *port)
- {
--	UART_PUT_IER(port, ATMEL_US_TXRDY);
-+	if (atmel_use_dma_tx(port)) {
-+		if (UART_GET_PTSR(port) & ATMEL_PDC_TXTEN)
-+			/* The transmitter is already running.  Yes, we
-+			   really need this.*/
-+			return;
-+
-+		UART_PUT_IER(port, ATMEL_US_ENDTX | ATMEL_US_TXBUFE);
-+		/* re-enable PDC transmit */
-+		UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
-+	} else
-+		UART_PUT_IER(port, ATMEL_US_TXRDY);
- }
- 
- /*
-@@ -220,7 +297,12 @@
-  */
- static void atmel_stop_rx(struct uart_port *port)
+ static int atmel_serial_suspend(struct platform_device *pdev,
+ 				pm_message_t state)
  {
--	UART_PUT_IDR(port, ATMEL_US_RXRDY);
-+	if (atmel_use_dma_rx(port)) {
-+		/* disable PDC receive */
-+		UART_PUT_PTCR(port, ATMEL_PDC_RXTDIS);
-+		UART_PUT_IDR(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
-+	} else
-+		UART_PUT_IDR(port, ATMEL_US_RXRDY);
- }
+@@ -1447,7 +1456,7 @@
+ 	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
  
- /*
-@@ -228,7 +310,8 @@
-  */
- static void atmel_enable_ms(struct uart_port *port)
- {
--	UART_PUT_IER(port, ATMEL_US_RIIC | ATMEL_US_DSRIC | ATMEL_US_DCDIC | ATMEL_US_CTSIC);
-+	UART_PUT_IER(port, ATMEL_US_RIIC | ATMEL_US_DSRIC
-+			| ATMEL_US_DCDIC | ATMEL_US_CTSIC);
- }
+ 	if (device_may_wakeup(&pdev->dev)
+-	    && !at91_suspend_entering_slow_clock())
++	    && !atmel_serial_clk_will_stop())
+ 		enable_irq_wake(port->irq);
+ 	else {
+ 		uart_suspend_port(&atmel_uart, port);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/spi/atmel_spi.c avr32-2.6/drivers/spi/atmel_spi.c
+--- linux-2.6.25.6/drivers/spi/atmel_spi.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/spi/atmel_spi.c	2008-06-12 15:09:42.542815989 +0200
+@@ -51,9 +51,7 @@
+ 	u8			stopping;
+ 	struct list_head	queue;
+ 	struct spi_transfer	*current_transfer;
+-	unsigned long		current_remaining_bytes;
+-	struct spi_transfer	*next_transfer;
+-	unsigned long		next_remaining_bytes;
++	unsigned long		remaining_bytes;
  
- /*
-@@ -243,22 +326,63 @@
+ 	void			*buffer;
+ 	dma_addr_t		buffer_dma;
+@@ -133,48 +131,6 @@
+ 		gpio_set_value(gpio, !active);
  }
  
- /*
-+ * Stores the incoming character in the ring buffer
-+ */
-+static void
-+atmel_buffer_rx_char(struct uart_port *port, unsigned int status,
-+		     unsigned int ch)
-+{
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+	struct circ_buf *ring = &atmel_port->rx_ring;
-+	struct atmel_uart_char *c;
-+
-+	if (!CIRC_SPACE(ring->head, ring->tail, ATMEL_SERIAL_RINGSIZE))
-+		/* Buffer overflow, ignore char */
-+		return;
-+
-+	c = &((struct atmel_uart_char *)ring->buf)[ring->head];
-+	c->status	= status;
-+	c->ch		= ch;
-+
-+	/* Make sure the character is stored before we update head. */
-+	smp_wmb();
-+
-+	ring->head = (ring->head + 1) & (ATMEL_SERIAL_RINGSIZE - 1);
-+}
-+
-+/*
-+ * Deal with parity, framing and overrun errors.
-+ */
-+static void atmel_pdc_rxerr(struct uart_port *port, unsigned int status)
-+{
-+	/* clear error */
-+	UART_PUT_CR(port, ATMEL_US_RSTSTA);
-+
-+	if (status & ATMEL_US_RXBRK) {
-+		/* ignore side-effect */
-+		status &= ~(ATMEL_US_PARE | ATMEL_US_FRAME);
-+		port->icount.brk++;
-+	}
-+	if (status & ATMEL_US_PARE)
-+		port->icount.parity++;
-+	if (status & ATMEL_US_FRAME)
-+		port->icount.frame++;
-+	if (status & ATMEL_US_OVRE)
-+		port->icount.overrun++;
-+}
-+
-+/*
-  * Characters received (called from interrupt handler)
-  */
- static void atmel_rx_chars(struct uart_port *port)
- {
--	struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
--	struct tty_struct *tty = port->info->tty;
--	unsigned int status, ch, flg;
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+	unsigned int status, ch;
- 
- 	status = UART_GET_CSR(port);
- 	while (status & ATMEL_US_RXRDY) {
- 		ch = UART_GET_CHAR(port);
- 
--		port->icount.rx++;
--
--		flg = TTY_NORMAL;
--
- 		/*
- 		 * note that the error handling code is
- 		 * out of the main execution path
-@@ -266,15 +390,14 @@
- 		if (unlikely(status & (ATMEL_US_PARE | ATMEL_US_FRAME
- 				       | ATMEL_US_OVRE | ATMEL_US_RXBRK)
- 			     || atmel_port->break_active)) {
--			UART_PUT_CR(port, ATMEL_US_RSTSTA);	/* clear error */
-+
-+			/* clear error */
-+			UART_PUT_CR(port, ATMEL_US_RSTSTA);
-+
- 			if (status & ATMEL_US_RXBRK
- 			    && !atmel_port->break_active) {
--				status &= ~(ATMEL_US_PARE | ATMEL_US_FRAME);	/* ignore side-effect */
--				port->icount.brk++;
- 				atmel_port->break_active = 1;
- 				UART_PUT_IER(port, ATMEL_US_RXBRK);
--				if (uart_handle_break(port))
--					goto ignore_char;
- 			} else {
- 				/*
- 				 * This is either the end-of-break
-@@ -287,52 +410,30 @@
- 				status &= ~ATMEL_US_RXBRK;
- 				atmel_port->break_active = 0;
- 			}
--			if (status & ATMEL_US_PARE)
--				port->icount.parity++;
--			if (status & ATMEL_US_FRAME)
--				port->icount.frame++;
--			if (status & ATMEL_US_OVRE)
--				port->icount.overrun++;
--
--			status &= port->read_status_mask;
+-static inline int atmel_spi_xfer_is_last(struct spi_message *msg,
+-					struct spi_transfer *xfer)
+-{
+-	return msg->transfers.prev == &xfer->transfer_list;
+-}
 -
--			if (status & ATMEL_US_RXBRK)
--				flg = TTY_BREAK;
--			else if (status & ATMEL_US_PARE)
--				flg = TTY_PARITY;
--			else if (status & ATMEL_US_FRAME)
--				flg = TTY_FRAME;
- 		}
- 
--		if (uart_handle_sysrq_char(port, ch))
--			goto ignore_char;
+-static inline int atmel_spi_xfer_can_be_chained(struct spi_transfer *xfer)
+-{
+-	return xfer->delay_usecs == 0 && !xfer->cs_change;
+-}
 -
--		uart_insert_char(port, status, ATMEL_US_OVRE, ch, flg);
+-static void atmel_spi_next_xfer_data(struct spi_master *master,
+-				struct spi_transfer *xfer,
+-				dma_addr_t *tx_dma,
+-				dma_addr_t *rx_dma,
+-				u32 *plen)
+-{
+-	struct atmel_spi	*as = spi_master_get_devdata(master);
+-	u32			len = *plen;
 -
--	ignore_char:
-+		atmel_buffer_rx_char(port, status, ch);
- 		status = UART_GET_CSR(port);
- 	}
- 
--	tty_flip_buffer_push(tty);
-+	tasklet_schedule(&atmel_port->tasklet);
- }
- 
- /*
-- * Transmit characters (called from interrupt handler)
-+ * Transmit characters (called from tasklet with TXRDY interrupt
-+ * disabled)
-  */
- static void atmel_tx_chars(struct uart_port *port)
- {
- 	struct circ_buf *xmit = &port->info->xmit;
- 
--	if (port->x_char) {
-+	if (port->x_char && UART_GET_CSR(port) & ATMEL_US_TXRDY) {
- 		UART_PUT_CHAR(port, port->x_char);
- 		port->icount.tx++;
- 		port->x_char = 0;
--		return;
- 	}
--	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
--		atmel_stop_tx(port);
-+	if (uart_circ_empty(xmit) || uart_tx_stopped(port))
- 		return;
+-	/* use scratch buffer only when rx or tx data is unspecified */
+-	if (xfer->rx_buf)
+-		*rx_dma = xfer->rx_dma + xfer->len - len;
+-	else {
+-		*rx_dma = as->buffer_dma;
+-		if (len > BUFFER_SIZE)
+-			len = BUFFER_SIZE;
 -	}
- 
- 	while (UART_GET_CSR(port) & ATMEL_US_TXRDY) {
- 		UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
-@@ -345,8 +446,88 @@
- 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- 		uart_write_wakeup(port);
- 
--	if (uart_circ_empty(xmit))
--		atmel_stop_tx(port);
-+	if (!uart_circ_empty(xmit))
-+		UART_PUT_IER(port, ATMEL_US_TXRDY);
-+}
-+
-+/*
-+ * receive interrupt handler.
-+ */
-+static void
-+atmel_handle_receive(struct uart_port *port, unsigned int pending)
-+{
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+
-+	if (atmel_use_dma_rx(port)) {
-+		/*
-+		 * PDC receive. Just schedule the tasklet and let it
-+		 * figure out the details.
-+		 *
-+		 * TODO: We're not handling error flags correctly at
-+		 * the moment.
-+		 */
-+		if (pending & (ATMEL_US_ENDRX | ATMEL_US_TIMEOUT)) {
-+			UART_PUT_IDR(port, (ATMEL_US_ENDRX
-+						| ATMEL_US_TIMEOUT));
-+			tasklet_schedule(&atmel_port->tasklet);
-+		}
-+
-+		if (pending & (ATMEL_US_RXBRK | ATMEL_US_OVRE |
-+				ATMEL_US_FRAME | ATMEL_US_PARE))
-+			atmel_pdc_rxerr(port, pending);
-+	}
-+
-+	/* Interrupt receive */
-+	if (pending & ATMEL_US_RXRDY)
-+		atmel_rx_chars(port);
-+	else if (pending & ATMEL_US_RXBRK) {
-+		/*
-+		 * End of break detected. If it came along with a
-+		 * character, atmel_rx_chars will handle it.
-+		 */
-+		UART_PUT_CR(port, ATMEL_US_RSTSTA);
-+		UART_PUT_IDR(port, ATMEL_US_RXBRK);
-+		atmel_port->break_active = 0;
-+	}
-+}
-+
-+/*
-+ * transmit interrupt handler. (Transmit is IRQF_NODELAY safe)
-+ */
-+static void
-+atmel_handle_transmit(struct uart_port *port, unsigned int pending)
-+{
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+
-+	if (atmel_use_dma_tx(port)) {
-+		/* PDC transmit */
-+		if (pending & (ATMEL_US_ENDTX | ATMEL_US_TXBUFE)) {
-+			UART_PUT_IDR(port, ATMEL_US_ENDTX | ATMEL_US_TXBUFE);
-+			tasklet_schedule(&atmel_port->tasklet);
-+		}
-+	} else {
-+		/* Interrupt transmit */
-+		if (pending & ATMEL_US_TXRDY) {
-+			UART_PUT_IDR(port, ATMEL_US_TXRDY);
-+			tasklet_schedule(&atmel_port->tasklet);
-+		}
-+	}
-+}
-+
-+/*
-+ * status flags interrupt handler.
-+ */
-+static void
-+atmel_handle_status(struct uart_port *port, unsigned int pending,
-+		    unsigned int status)
-+{
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+
-+	if (pending & (ATMEL_US_RIIC | ATMEL_US_DSRIC | ATMEL_US_DCDIC
-+				| ATMEL_US_CTSIC)) {
-+		atmel_port->irq_status = status;
-+		tasklet_schedule(&atmel_port->tasklet);
-+	}
- }
- 
- /*
-@@ -355,47 +536,255 @@
- static irqreturn_t atmel_interrupt(int irq, void *dev_id)
- {
- 	struct uart_port *port = dev_id;
--	struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
- 	unsigned int status, pending, pass_counter = 0;
- 
--	status = UART_GET_CSR(port);
--	pending = status & UART_GET_IMR(port);
--	while (pending) {
--		/* Interrupt receive */
--		if (pending & ATMEL_US_RXRDY)
--			atmel_rx_chars(port);
--		else if (pending & ATMEL_US_RXBRK) {
-+	do {
-+		status = UART_GET_CSR(port);
-+		pending = status & UART_GET_IMR(port);
-+		if (!pending)
-+			break;
-+
-+		atmel_handle_receive(port, pending);
-+		atmel_handle_status(port, pending, status);
-+		atmel_handle_transmit(port, pending);
-+	} while (pass_counter++ < ATMEL_ISR_PASS_LIMIT);
-+
-+	return IRQ_HANDLED;
-+}
-+
-+/*
-+ * Called from tasklet with ENDTX and TXBUFE interrupts disabled.
-+ */
-+static void atmel_tx_dma(struct uart_port *port)
-+{
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+	struct circ_buf *xmit = &port->info->xmit;
-+	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;
-+	int count;
-+
-+	xmit->tail += pdc->ofs;
-+	xmit->tail &= UART_XMIT_SIZE - 1;
-+
-+	port->icount.tx += pdc->ofs;
-+	pdc->ofs = 0;
-+
-+	if (!uart_circ_empty(xmit)) {
-+		/* more to transmit - setup next transfer */
-+
-+		/* disable PDC transmit */
-+		UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
-+		dma_sync_single_for_device(port->dev,
-+					   pdc->dma_addr,
-+					   pdc->dma_size,
-+					   DMA_TO_DEVICE);
-+
-+		count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
-+		pdc->ofs = count;
-+
-+		UART_PUT_TPR(port, pdc->dma_addr + xmit->tail);
-+		UART_PUT_TCR(port, count);
-+		/* re-enable PDC transmit and interrupts */
-+		UART_PUT_PTCR(port, ATMEL_PDC_TXTEN);
-+		UART_PUT_IER(port, ATMEL_US_ENDTX | ATMEL_US_TXBUFE);
-+	} else {
-+		/* nothing left to transmit - disable the transmitter */
-+
-+		/* disable PDC transmit */
-+		UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
-+	}
-+
-+	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-+		uart_write_wakeup(port);
-+}
-+
-+static void atmel_rx_from_ring(struct uart_port *port)
-+{
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+	struct circ_buf *ring = &atmel_port->rx_ring;
-+	unsigned int flg;
-+	unsigned int status;
-+
-+	while (ring->head != ring->tail) {
-+		struct atmel_uart_char c;
-+
-+		/* Make sure c is loaded after head. */
-+		smp_rmb();
-+
-+		c = ((struct atmel_uart_char *)ring->buf)[ring->tail];
-+
-+		ring->tail = (ring->tail + 1) & (ATMEL_SERIAL_RINGSIZE - 1);
-+
-+		port->icount.rx++;
-+		status = c.status;
-+		flg = TTY_NORMAL;
-+
-+		/*
-+		 * note that the error handling code is
-+		 * out of the main execution path
-+		 */
-+		if (unlikely(status & (ATMEL_US_PARE | ATMEL_US_FRAME
-+				       | ATMEL_US_OVRE | ATMEL_US_RXBRK))) {
-+			if (status & ATMEL_US_RXBRK) {
-+				/* ignore side-effect */
-+				status &= ~(ATMEL_US_PARE | ATMEL_US_FRAME);
-+
-+				port->icount.brk++;
-+				if (uart_handle_break(port))
-+					continue;
-+			}
-+			if (status & ATMEL_US_PARE)
-+				port->icount.parity++;
-+			if (status & ATMEL_US_FRAME)
-+				port->icount.frame++;
-+			if (status & ATMEL_US_OVRE)
-+				port->icount.overrun++;
-+
-+			status &= port->read_status_mask;
-+
-+			if (status & ATMEL_US_RXBRK)
-+				flg = TTY_BREAK;
-+			else if (status & ATMEL_US_PARE)
-+				flg = TTY_PARITY;
-+			else if (status & ATMEL_US_FRAME)
-+				flg = TTY_FRAME;
-+		}
-+
-+
-+		if (uart_handle_sysrq_char(port, c.ch))
-+			continue;
-+
-+		uart_insert_char(port, status, ATMEL_US_OVRE, c.ch, flg);
-+	}
-+
-+	/*
-+	 * Drop the lock here since it might end up calling
-+	 * uart_start(), which takes the lock.
-+	 */
-+	spin_unlock(&port->lock);
-+	tty_flip_buffer_push(port->info->tty);
-+	spin_lock(&port->lock);
-+}
-+
-+static void atmel_rx_from_dma(struct uart_port *port)
-+{
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+	struct tty_struct *tty = port->info->tty;
-+	struct atmel_dma_buffer *pdc;
-+	int rx_idx = atmel_port->pdc_rx_idx;
-+	unsigned int head;
-+	unsigned int tail;
-+	unsigned int count;
-+
-+	do {
-+		/* Reset the UART timeout early so that we don't miss one */
-+		UART_PUT_CR(port, ATMEL_US_STTTO);
-+
-+		pdc = &atmel_port->pdc_rx[rx_idx];
-+		head = UART_GET_RPR(port) - pdc->dma_addr;
-+		tail = pdc->ofs;
-+
-+		/* If the PDC has switched buffers, RPR won't contain
-+		 * any address within the current buffer. Since head
-+		 * is unsigned, we just need a one-way comparison to
-+		 * find out.
-+		 *
-+		 * In this case, we just need to consume the entire
-+		 * buffer and resubmit it for DMA. This will clear the
-+		 * ENDRX bit as well, so that we can safely re-enable
-+		 * all interrupts below.
-+		 */
-+		head = min(head, pdc->dma_size);
-+
-+		if (likely(head != tail)) {
-+			dma_sync_single_for_cpu(port->dev, pdc->dma_addr,
-+					pdc->dma_size, DMA_FROM_DEVICE);
-+
- 			/*
--			 * End of break detected. If it came along
--			 * with a character, atmel_rx_chars will
--			 * handle it.
-+			 * head will only wrap around when we recycle
-+			 * the DMA buffer, and when that happens, we
-+			 * explicitly set tail to 0. So head will
-+			 * always be greater than tail.
- 			 */
--			UART_PUT_CR(port, ATMEL_US_RSTSTA);
--			UART_PUT_IDR(port, ATMEL_US_RXBRK);
--			atmel_port->break_active = 0;
-+			count = head - tail;
-+
-+			tty_insert_flip_string(tty, pdc->buf + pdc->ofs, count);
-+
-+			dma_sync_single_for_device(port->dev, pdc->dma_addr,
-+					pdc->dma_size, DMA_FROM_DEVICE);
-+
-+			port->icount.rx += count;
-+			pdc->ofs = head;
-+		}
-+
-+		/*
-+		 * If the current buffer is full, we need to check if
-+		 * the next one contains any additional data.
-+		 */
-+		if (head >= pdc->dma_size) {
-+			pdc->ofs = 0;
-+			UART_PUT_RNPR(port, pdc->dma_addr);
-+			UART_PUT_RNCR(port, pdc->dma_size);
-+
-+			rx_idx = !rx_idx;
-+			atmel_port->pdc_rx_idx = rx_idx;
- 		}
-+	} while (head >= pdc->dma_size);
-+
-+	/*
-+	 * Drop the lock here since it might end up calling
-+	 * uart_start(), which takes the lock.
-+	 */
-+	spin_unlock(&port->lock);
-+	tty_flip_buffer_push(tty);
-+	spin_lock(&port->lock);
-+
-+	UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
-+}
- 
--		// TODO: All reads to CSR will clear these interrupts!
--		if (pending & ATMEL_US_RIIC) port->icount.rng++;
--		if (pending & ATMEL_US_DSRIC) port->icount.dsr++;
--		if (pending & ATMEL_US_DCDIC)
-+/*
-+ * tasklet handling tty stuff outside the interrupt handler.
-+ */
-+static void atmel_tasklet_func(unsigned long data)
-+{
-+	struct uart_port *port = (struct uart_port *)data;
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+	unsigned int status;
-+	unsigned int status_change;
-+
-+	/* The interrupt handler does not take the lock */
-+	spin_lock(&port->lock);
-+
-+	if (atmel_use_dma_tx(port))
-+		atmel_tx_dma(port);
-+	else
-+		atmel_tx_chars(port);
-+
-+	status = atmel_port->irq_status;
-+	status_change = status ^ atmel_port->irq_status_prev;
-+
-+	if (status_change & (ATMEL_US_RI | ATMEL_US_DSR
-+				| ATMEL_US_DCD | ATMEL_US_CTS)) {
-+		/* TODO: All reads to CSR will clear these interrupts! */
-+		if (status_change & ATMEL_US_RI)
-+			port->icount.rng++;
-+		if (status_change & ATMEL_US_DSR)
-+			port->icount.dsr++;
-+		if (status_change & ATMEL_US_DCD)
- 			uart_handle_dcd_change(port, !(status & ATMEL_US_DCD));
--		if (pending & ATMEL_US_CTSIC)
-+		if (status_change & ATMEL_US_CTS)
- 			uart_handle_cts_change(port, !(status & ATMEL_US_CTS));
--		if (pending & (ATMEL_US_RIIC | ATMEL_US_DSRIC | ATMEL_US_DCDIC | ATMEL_US_CTSIC))
--			wake_up_interruptible(&port->info->delta_msr_wait);
--
--		/* Interrupt transmit */
--		if (pending & ATMEL_US_TXRDY)
--			atmel_tx_chars(port);
- 
--		if (pass_counter++ > ATMEL_ISR_PASS_LIMIT)
--			break;
-+		wake_up_interruptible(&port->info->delta_msr_wait);
- 
--		status = UART_GET_CSR(port);
--		pending = status & UART_GET_IMR(port);
-+		atmel_port->irq_status_prev = status;
- 	}
--	return IRQ_HANDLED;
-+
-+	if (atmel_use_dma_rx(port))
-+		atmel_rx_from_dma(port);
-+	else
-+		atmel_rx_from_ring(port);
-+
-+	spin_unlock(&port->lock);
- }
- 
- /*
-@@ -403,6 +792,8 @@
-  */
- static int atmel_startup(struct uart_port *port)
- {
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+	struct tty_struct *tty = port->info->tty;
- 	int retval;
- 
- 	/*
-@@ -415,13 +806,64 @@
- 	/*
- 	 * Allocate the IRQ
- 	 */
--	retval = request_irq(port->irq, atmel_interrupt, IRQF_SHARED, "atmel_serial", port);
-+	retval = request_irq(port->irq, atmel_interrupt, IRQF_SHARED,
-+			tty ? tty->name : "atmel_serial", port);
- 	if (retval) {
- 		printk("atmel_serial: atmel_startup - Can't get irq\n");
- 		return retval;
- 	}
- 
- 	/*
-+	 * Initialize DMA (if necessary)
-+	 */
-+	if (atmel_use_dma_rx(port)) {
-+		int i;
-+
-+		for (i = 0; i < 2; i++) {
-+			struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];
-+
-+			pdc->buf = kmalloc(PDC_BUFFER_SIZE, GFP_KERNEL);
-+			if (pdc->buf == NULL) {
-+				if (i != 0) {
-+					dma_unmap_single(port->dev,
-+						atmel_port->pdc_rx[0].dma_addr,
-+						PDC_BUFFER_SIZE,
-+						DMA_FROM_DEVICE);
-+					kfree(atmel_port->pdc_rx[0].buf);
-+				}
-+				free_irq(port->irq, port);
-+				return -ENOMEM;
-+			}
-+			pdc->dma_addr = dma_map_single(port->dev,
-+						       pdc->buf,
-+						       PDC_BUFFER_SIZE,
-+						       DMA_FROM_DEVICE);
-+			pdc->dma_size = PDC_BUFFER_SIZE;
-+			pdc->ofs = 0;
-+		}
-+
-+		atmel_port->pdc_rx_idx = 0;
-+
-+		UART_PUT_RPR(port, atmel_port->pdc_rx[0].dma_addr);
-+		UART_PUT_RCR(port, PDC_BUFFER_SIZE);
-+
-+		UART_PUT_RNPR(port, atmel_port->pdc_rx[1].dma_addr);
-+		UART_PUT_RNCR(port, PDC_BUFFER_SIZE);
-+	}
-+	if (atmel_use_dma_tx(port)) {
-+		struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;
-+		struct circ_buf *xmit = &port->info->xmit;
-+
-+		pdc->buf = xmit->buf;
-+		pdc->dma_addr = dma_map_single(port->dev,
-+					       pdc->buf,
-+					       UART_XMIT_SIZE,
-+					       DMA_TO_DEVICE);
-+		pdc->dma_size = UART_XMIT_SIZE;
-+		pdc->ofs = 0;
-+	}
-+
-+	/*
- 	 * If there is a specific "open" function (to register
- 	 * control line interrupts)
- 	 */
-@@ -437,9 +879,21 @@
- 	 * Finally, enable the serial port
- 	 */
- 	UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
--	UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);		/* enable xmit & rcvr */
-+	/* enable xmit & rcvr */
-+	UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
- 
--	UART_PUT_IER(port, ATMEL_US_RXRDY);		/* enable receive only */
-+	if (atmel_use_dma_rx(port)) {
-+		/* set UART timeout */
-+		UART_PUT_RTOR(port, PDC_RX_TIMEOUT);
-+		UART_PUT_CR(port, ATMEL_US_STTTO);
-+
-+		UART_PUT_IER(port, ATMEL_US_ENDRX | ATMEL_US_TIMEOUT);
-+		/* enable PDC controller */
-+		UART_PUT_PTCR(port, ATMEL_PDC_RXTEN);
-+	} else {
-+		/* enable receive only */
-+		UART_PUT_IER(port, ATMEL_US_RXRDY);
-+	}
- 
- 	return 0;
- }
-@@ -449,6 +903,38 @@
-  */
- static void atmel_shutdown(struct uart_port *port)
- {
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-+	/*
-+	 * Ensure everything is stopped.
-+	 */
-+	atmel_stop_rx(port);
-+	atmel_stop_tx(port);
-+
-+	/*
-+	 * Shut-down the DMA.
-+	 */
-+	if (atmel_use_dma_rx(port)) {
-+		int i;
-+
-+		for (i = 0; i < 2; i++) {
-+			struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];
-+
-+			dma_unmap_single(port->dev,
-+					 pdc->dma_addr,
-+					 pdc->dma_size,
-+					 DMA_FROM_DEVICE);
-+			kfree(pdc->buf);
-+		}
-+	}
-+	if (atmel_use_dma_tx(port)) {
-+		struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;
-+
-+		dma_unmap_single(port->dev,
-+				 pdc->dma_addr,
-+				 pdc->dma_size,
-+				 DMA_TO_DEVICE);
-+	}
-+
- 	/*
- 	 * Disable all interrupts, port and break condition.
- 	 */
-@@ -471,45 +957,48 @@
- /*
-  * Power / Clock management.
-  */
--static void atmel_serial_pm(struct uart_port *port, unsigned int state, unsigned int oldstate)
-+static void atmel_serial_pm(struct uart_port *port, unsigned int state,
-+			    unsigned int oldstate)
- {
--	struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- 
- 	switch (state) {
--		case 0:
--			/*
--			 * Enable the peripheral clock for this serial port.
--			 * This is called on uart_open() or a resume event.
--			 */
--			clk_enable(atmel_port->clk);
--			break;
--		case 3:
--			/*
--			 * Disable the peripheral clock for this serial port.
--			 * This is called on uart_close() or a suspend event.
--			 */
--			clk_disable(atmel_port->clk);
--			break;
--		default:
--			printk(KERN_ERR "atmel_serial: unknown pm %d\n", state);
-+	case 0:
-+		/*
-+		 * Enable the peripheral clock for this serial port.
-+		 * This is called on uart_open() or a resume event.
-+		 */
-+		clk_enable(atmel_port->clk);
-+		break;
-+	case 3:
-+		/*
-+		 * Disable the peripheral clock for this serial port.
-+		 * This is called on uart_close() or a suspend event.
-+		 */
-+		clk_disable(atmel_port->clk);
-+		break;
-+	default:
-+		printk(KERN_ERR "atmel_serial: unknown pm %d\n", state);
- 	}
- }
- 
- /*
-  * Change the port parameters
-  */
--static void atmel_set_termios(struct uart_port *port, struct ktermios * termios, struct ktermios * old)
-+static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
-+			      struct ktermios *old)
- {
- 	unsigned long flags;
- 	unsigned int mode, imr, quot, baud;
- 
- 	/* Get current mode register */
--	mode = UART_GET_MR(port) & ~(ATMEL_US_USCLKS | ATMEL_US_CHRL | ATMEL_US_NBSTOP | ATMEL_US_PAR);
-+	mode = UART_GET_MR(port) & ~(ATMEL_US_USCLKS | ATMEL_US_CHRL
-+					| ATMEL_US_NBSTOP | ATMEL_US_PAR);
- 
--	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
-+	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16);
- 	quot = uart_get_divisor(port, baud);
- 
--	if (quot > 65535) {		/* BRGR is 16-bit, so switch to slower clock */
-+	if (quot > 65535) {	/* BRGR is 16-bit, so switch to slower clock */
- 		quot /= 8;
- 		mode |= ATMEL_US_USCLKS_MCK_DIV8;
- 	}
-@@ -536,18 +1025,17 @@
- 
- 	/* parity */
- 	if (termios->c_cflag & PARENB) {
--		if (termios->c_cflag & CMSPAR) {			/* Mark or Space parity */
-+		/* Mark or Space parity */
-+		if (termios->c_cflag & CMSPAR) {
- 			if (termios->c_cflag & PARODD)
- 				mode |= ATMEL_US_PAR_MARK;
- 			else
- 				mode |= ATMEL_US_PAR_SPACE;
--		}
--		else if (termios->c_cflag & PARODD)
-+		} else if (termios->c_cflag & PARODD)
- 			mode |= ATMEL_US_PAR_ODD;
- 		else
- 			mode |= ATMEL_US_PAR_EVEN;
+-	if (xfer->tx_buf)
+-		*tx_dma = xfer->tx_dma + xfer->len - len;
+-	else {
+-		*tx_dma = as->buffer_dma;
+-		if (len > BUFFER_SIZE)
+-			len = BUFFER_SIZE;
+-		memset(as->buffer, 0, len);
+-		dma_sync_single_for_device(&as->pdev->dev,
+-				as->buffer_dma, len, DMA_TO_DEVICE);
 -	}
--	else
-+	} else
- 		mode |= ATMEL_US_PAR_NONE;
- 
- 	spin_lock_irqsave(&port->lock, flags);
-@@ -558,6 +1046,10 @@
- 	if (termios->c_iflag & (BRKINT | PARMRK))
- 		port->read_status_mask |= ATMEL_US_RXBRK;
- 
-+	if (atmel_use_dma_rx(port))
-+		/* need to enable error interrupts */
-+		UART_PUT_IER(port, port->read_status_mask);
-+
- 	/*
- 	 * Characters to ignore
- 	 */
-@@ -573,16 +1065,16 @@
- 		if (termios->c_iflag & IGNPAR)
- 			port->ignore_status_mask |= ATMEL_US_OVRE;
- 	}
 -
--	// TODO: Ignore all characters if CREAD is set.
-+	/* TODO: Ignore all characters if CREAD is set.*/
- 
- 	/* update the per-port timeout */
- 	uart_update_timeout(port, termios->c_cflag, baud);
- 
--	/* disable interrupts and drain transmitter */
--	imr = UART_GET_IMR(port);	/* get interrupt mask */
--	UART_PUT_IDR(port, -1);		/* disable all interrupts */
--	while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY)) { barrier(); }
-+	/* save/disable interrupts and drain transmitter */
-+	imr = UART_GET_IMR(port);
-+	UART_PUT_IDR(port, -1);
-+	while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY))
-+		cpu_relax();
- 
- 	/* disable receiver and transmitter */
- 	UART_PUT_CR(port, ATMEL_US_TXDIS | ATMEL_US_RXDIS);
-@@ -708,7 +1200,8 @@
- /*
-  * Configure the port from the platform device resource info.
-  */
--static void __devinit atmel_init_port(struct atmel_uart_port *atmel_port, struct platform_device *pdev)
-+static void __devinit atmel_init_port(struct atmel_uart_port *atmel_port,
-+				      struct platform_device *pdev)
- {
- 	struct uart_port *port = &atmel_port->uart;
- 	struct atmel_uart_data *data = pdev->dev.platform_data;
-@@ -723,6 +1216,11 @@
- 	port->mapbase	= pdev->resource[0].start;
- 	port->irq	= pdev->resource[1].start;
- 
-+	tasklet_init(&atmel_port->tasklet, atmel_tasklet_func,
-+			(unsigned long)port);
-+
-+	memset(&atmel_port->rx_ring, 0, sizeof(atmel_port->rx_ring));
-+
- 	if (data->regs)
- 		/* Already mapped by setup code */
- 		port->membase = data->regs;
-@@ -731,11 +1229,17 @@
- 		port->membase	= NULL;
- 	}
- 
--	if (!atmel_port->clk) {		/* for console, the clock could already be configured */
-+	/* for console, the clock could already be configured */
-+	if (!atmel_port->clk) {
- 		atmel_port->clk = clk_get(&pdev->dev, "usart");
- 		clk_enable(atmel_port->clk);
- 		port->uartclk = clk_get_rate(atmel_port->clk);
- 	}
-+
-+	atmel_port->use_dma_rx = data->use_dma_rx;
-+	atmel_port->use_dma_tx = data->use_dma_tx;
-+	if (atmel_use_dma_tx(port))
-+		port->fifosize = PDC_BUFFER_SIZE;
- }
- 
- /*
-@@ -755,12 +1259,11 @@
- 	atmel_pops.set_wake	= fns->set_wake;
- }
- 
+-	*plen = len;
+-}
 -
- #ifdef CONFIG_SERIAL_ATMEL_CONSOLE
- static void atmel_console_putchar(struct uart_port *port, int ch)
- {
- 	while (!(UART_GET_CSR(port) & ATMEL_US_TXRDY))
--		barrier();
-+		cpu_relax();
- 	UART_PUT_CHAR(port, ch);
- }
- 
-@@ -773,38 +1276,40 @@
- 	unsigned int status, imr;
- 
- 	/*
--	 *	First, save IMR and then disable interrupts
-+	 * First, save IMR and then disable interrupts
- 	 */
--	imr = UART_GET_IMR(port);	/* get interrupt mask */
-+	imr = UART_GET_IMR(port);
- 	UART_PUT_IDR(port, ATMEL_US_RXRDY | ATMEL_US_TXRDY);
- 
- 	uart_console_write(port, s, count, atmel_console_putchar);
- 
- 	/*
--	 *	Finally, wait for transmitter to become empty
--	 *	and restore IMR
-+	 * Finally, wait for transmitter to become empty
-+	 * and restore IMR
- 	 */
- 	do {
- 		status = UART_GET_CSR(port);
- 	} while (!(status & ATMEL_US_TXRDY));
--	UART_PUT_IER(port, imr);	/* set interrupts back the way they were */
-+	/* set interrupts back the way they were */
-+	UART_PUT_IER(port, imr);
- }
- 
- /*
-- * If the port was already initialised (eg, by a boot loader), try to determine
-- * the current setup.
-+ * If the port was already initialised (eg, by a boot loader),
-+ * try to determine the current setup.
-  */
--static void __init atmel_console_get_options(struct uart_port *port, int *baud, int *parity, int *bits)
-+static void __init atmel_console_get_options(struct uart_port *port, int *baud,
-+					     int *parity, int *bits)
- {
- 	unsigned int mr, quot;
- 
--// TODO: CR is a write-only register
--//	unsigned int cr;
--//
--//	cr = UART_GET_CR(port) & (ATMEL_US_RXEN | ATMEL_US_TXEN);
--//	if (cr == (ATMEL_US_RXEN | ATMEL_US_TXEN)) {
--//		/* ok, the port was enabled */
--//	}
-+	/*
-+	 * If the baud rate generator isn't running, the port wasn't
-+	 * initialized by the boot loader.
-+	 */
-+	quot = UART_GET_BRGR(port);
-+	if (!quot)
-+		return;
- 
- 	mr = UART_GET_MR(port) & ATMEL_US_CHRL;
- 	if (mr == ATMEL_US_CHRL_8)
-@@ -824,7 +1329,6 @@
- 	 * lower than one of those, as it would make us fall through
- 	 * to a much lower baud rate than we really want.
- 	 */
--	quot = UART_GET_BRGR(port);
- 	*baud = port->uartclk / (16 * (quot - 1));
- }
- 
-@@ -836,10 +1340,12 @@
- 	int parity = 'n';
- 	int flow = 'n';
- 
--	if (port->membase == 0)		/* Port not initialized yet - delay setup */
-+	if (port->membase == NULL) {
-+		/* Port not initialized yet - delay setup */
- 		return -ENODEV;
-+	}
- 
--	UART_PUT_IDR(port, -1);				/* disable interrupts */
-+	UART_PUT_IDR(port, -1);
- 	UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX);
- 	UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN);
- 
-@@ -871,13 +1377,16 @@
- static int __init atmel_console_init(void)
- {
- 	if (atmel_default_console_device) {
--		add_preferred_console(ATMEL_DEVICENAME, atmel_default_console_device->id, NULL);
--		atmel_init_port(&(atmel_ports[atmel_default_console_device->id]), atmel_default_console_device);
-+		add_preferred_console(ATMEL_DEVICENAME,
-+				      atmel_default_console_device->id, NULL);
-+		atmel_init_port(&atmel_ports[atmel_default_console_device->id],
-+				atmel_default_console_device);
- 		register_console(&atmel_console);
- 	}
- 
- 	return 0;
- }
-+
- console_initcall(atmel_console_init);
- 
  /*
-@@ -885,34 +1394,48 @@
-  */
- static int __init atmel_late_console_init(void)
- {
--	if (atmel_default_console_device && !(atmel_console.flags & CON_ENABLED))
-+	if (atmel_default_console_device
-+	    && !(atmel_console.flags & CON_ENABLED))
- 		register_console(&atmel_console);
- 
- 	return 0;
- }
-+
- core_initcall(atmel_late_console_init);
- 
-+static inline bool atmel_is_console_port(struct uart_port *port)
-+{
-+	return port->cons && port->cons->index == port->line;
-+}
-+
- #else
- #define ATMEL_CONSOLE_DEVICE	NULL
-+
-+static inline bool atmel_is_console_port(struct uart_port *port)
-+{
-+	return false;
-+}
- #endif
- 
- static struct uart_driver atmel_uart = {
--	.owner			= THIS_MODULE,
--	.driver_name		= "atmel_serial",
--	.dev_name		= ATMEL_DEVICENAME,
--	.major			= SERIAL_ATMEL_MAJOR,
--	.minor			= MINOR_START,
--	.nr			= ATMEL_MAX_UART,
--	.cons			= ATMEL_CONSOLE_DEVICE,
-+	.owner		= THIS_MODULE,
-+	.driver_name	= "atmel_serial",
-+	.dev_name	= ATMEL_DEVICENAME,
-+	.major		= SERIAL_ATMEL_MAJOR,
-+	.minor		= MINOR_START,
-+	.nr		= ATMEL_MAX_UART,
-+	.cons		= ATMEL_CONSOLE_DEVICE,
- };
- 
- #ifdef CONFIG_PM
--static int atmel_serial_suspend(struct platform_device *pdev, pm_message_t state)
-+static int atmel_serial_suspend(struct platform_device *pdev,
-+				pm_message_t state)
- {
- 	struct uart_port *port = platform_get_drvdata(pdev);
--	struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- 
--	if (device_may_wakeup(&pdev->dev) && !at91_suspend_entering_slow_clock())
-+	if (device_may_wakeup(&pdev->dev)
-+	    && !at91_suspend_entering_slow_clock())
- 		enable_irq_wake(port->irq);
- 	else {
- 		uart_suspend_port(&atmel_uart, port);
-@@ -925,13 +1448,12 @@
- static int atmel_serial_resume(struct platform_device *pdev)
+  * Submit next transfer for DMA.
+  * lock is held, spi irq is blocked
+@@ -184,78 +140,53 @@
  {
- 	struct uart_port *port = platform_get_drvdata(pdev);
--	struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+ 	struct atmel_spi	*as = spi_master_get_devdata(master);
+ 	struct spi_transfer	*xfer;
+-	u32			len, remaining, total;
++	u32			len;
+ 	dma_addr_t		tx_dma, rx_dma;
  
- 	if (atmel_port->suspended) {
- 		uart_resume_port(&atmel_uart, port);
- 		atmel_port->suspended = 0;
--	}
+-	if (!as->current_transfer)
+-		xfer = list_entry(msg->transfers.next,
+-				struct spi_transfer, transfer_list);
+-	else if (!as->next_transfer)
+-		xfer = list_entry(as->current_transfer->transfer_list.next,
+-				struct spi_transfer, transfer_list);
 -	else
-+	} else
- 		disable_irq_wake(port->irq);
- 
- 	return 0;
-@@ -944,15 +1466,40 @@
- static int __devinit atmel_serial_probe(struct platform_device *pdev)
- {
- 	struct atmel_uart_port *port;
-+	void *data;
- 	int ret;
- 
-+	BUILD_BUG_ON(!is_power_of_2(ATMEL_SERIAL_RINGSIZE));
-+
- 	port = &atmel_ports[pdev->id];
- 	atmel_init_port(port, pdev);
- 
-+	if (!atmel_use_dma_rx(&port->uart)) {
-+		ret = -ENOMEM;
-+		data = kmalloc(sizeof(struct atmel_uart_char)
-+				* ATMEL_SERIAL_RINGSIZE, GFP_KERNEL);
-+		if (!data)
-+			goto err_alloc_ring;
-+		port->rx_ring.buf = data;
-+	}
-+
- 	ret = uart_add_one_port(&atmel_uart, &port->uart);
--	if (!ret) {
--		device_init_wakeup(&pdev->dev, 1);
--		platform_set_drvdata(pdev, port);
-+	if (ret)
-+		goto err_add_port;
-+
-+	device_init_wakeup(&pdev->dev, 1);
-+	platform_set_drvdata(pdev, port);
-+
-+	return 0;
-+
-+err_add_port:
-+	kfree(port->rx_ring.buf);
-+	port->rx_ring.buf = NULL;
-+err_alloc_ring:
-+	if (!atmel_is_console_port(&port->uart)) {
-+		clk_disable(port->clk);
-+		clk_put(port->clk);
-+		port->clk = NULL;
- 	}
- 
- 	return ret;
-@@ -961,19 +1508,21 @@
- static int __devexit atmel_serial_remove(struct platform_device *pdev)
- {
- 	struct uart_port *port = platform_get_drvdata(pdev);
--	struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port;
-+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- 	int ret = 0;
- 
--	clk_disable(atmel_port->clk);
--	clk_put(atmel_port->clk);
+-		xfer = NULL;
 -
- 	device_init_wakeup(&pdev->dev, 0);
- 	platform_set_drvdata(pdev, NULL);
- 
--	if (port) {
--		ret = uart_remove_one_port(&atmel_uart, port);
--		kfree(port);
--	}
-+	ret = uart_remove_one_port(&atmel_uart, port);
-+
-+	tasklet_kill(&atmel_port->tasklet);
-+	kfree(atmel_port->rx_ring.buf);
-+
-+	/* "port" is allocated statically, so we shouldn't free it */
-+
-+	clk_disable(atmel_port->clk);
-+	clk_put(atmel_port->clk);
- 
- 	return ret;
- }
---- a/drivers/serial/atmel_serial.h
-+++ /dev/null
-@@ -1,127 +0,0 @@
--/*
-- * drivers/serial/atmel_serial.h
-- *
-- * Copyright (C) 2005 Ivan Kokshaysky
-- * Copyright (C) SAN People
-- *
-- * USART registers.
-- * Based on AT91RM9200 datasheet revision E.
-- *
-- * This program is free software; you can redistribute it and/or modify
-- * it under the terms of the GNU General Public License as published by
-- * the Free Software Foundation; either version 2 of the License, or
-- * (at your option) any later version.
-- */
--
--#ifndef ATMEL_SERIAL_H
--#define ATMEL_SERIAL_H
--
--#define ATMEL_US_CR		0x00			/* Control Register */
--#define		ATMEL_US_RSTRX		(1 <<  2)		/* Reset Receiver */
--#define		ATMEL_US_RSTTX		(1 <<  3)		/* Reset Transmitter */
--#define		ATMEL_US_RXEN		(1 <<  4)		/* Receiver Enable */
--#define		ATMEL_US_RXDIS		(1 <<  5)		/* Receiver Disable */
--#define		ATMEL_US_TXEN		(1 <<  6)		/* Transmitter Enable */
--#define		ATMEL_US_TXDIS		(1 <<  7)		/* Transmitter Disable */
--#define		ATMEL_US_RSTSTA		(1 <<  8)		/* Reset Status Bits */
--#define		ATMEL_US_STTBRK		(1 <<  9)		/* Start Break */
--#define		ATMEL_US_STPBRK		(1 << 10)		/* Stop Break */
--#define		ATMEL_US_STTTO		(1 << 11)		/* Start Time-out */
--#define		ATMEL_US_SENDA		(1 << 12)		/* Send Address */
--#define		ATMEL_US_RSTIT		(1 << 13)		/* Reset Iterations */
--#define		ATMEL_US_RSTNACK	(1 << 14)		/* Reset Non Acknowledge */
--#define		ATMEL_US_RETTO		(1 << 15)		/* Rearm Time-out */
--#define		ATMEL_US_DTREN		(1 << 16)		/* Data Terminal Ready Enable [AT91RM9200 only] */
--#define		ATMEL_US_DTRDIS		(1 << 17)		/* Data Terminal Ready Disable [AT91RM9200 only] */
--#define		ATMEL_US_RTSEN		(1 << 18)		/* Request To Send Enable */
--#define		ATMEL_US_RTSDIS		(1 << 19)		/* Request To Send Disable */
--
--#define ATMEL_US_MR		0x04			/* Mode Register */
--#define		ATMEL_US_USMODE		(0xf <<  0)		/* Mode of the USART */
--#define			ATMEL_US_USMODE_NORMAL		0
--#define			ATMEL_US_USMODE_RS485		1
--#define			ATMEL_US_USMODE_HWHS		2
--#define			ATMEL_US_USMODE_MODEM		3
--#define			ATMEL_US_USMODE_ISO7816_T0	4
--#define			ATMEL_US_USMODE_ISO7816_T1	6
--#define			ATMEL_US_USMODE_IRDA		8
--#define		ATMEL_US_USCLKS		(3   <<  4)		/* Clock Selection */
--#define			ATMEL_US_USCLKS_MCK		(0 <<  4)
--#define			ATMEL_US_USCLKS_MCK_DIV8	(1 <<  4)
--#define			ATMEL_US_USCLKS_SCK		(3 <<  4)
--#define		ATMEL_US_CHRL		(3   <<  6)		/* Character Length */
--#define			ATMEL_US_CHRL_5			(0 <<  6)
--#define			ATMEL_US_CHRL_6			(1 <<  6)
--#define			ATMEL_US_CHRL_7			(2 <<  6)
--#define			ATMEL_US_CHRL_8			(3 <<  6)
--#define		ATMEL_US_SYNC		(1 <<  8)		/* Synchronous Mode Select */
--#define		ATMEL_US_PAR		(7 <<  9)		/* Parity Type */
--#define			ATMEL_US_PAR_EVEN		(0 <<  9)
--#define			ATMEL_US_PAR_ODD		(1 <<  9)
--#define			ATMEL_US_PAR_SPACE		(2 <<  9)
--#define			ATMEL_US_PAR_MARK		(3 <<  9)
--#define			ATMEL_US_PAR_NONE		(4 <<  9)
--#define			ATMEL_US_PAR_MULTI_DROP		(6 <<  9)
--#define		ATMEL_US_NBSTOP		(3 << 12)		/* Number of Stop Bits */
--#define			ATMEL_US_NBSTOP_1		(0 << 12)
--#define			ATMEL_US_NBSTOP_1_5		(1 << 12)
--#define			ATMEL_US_NBSTOP_2		(2 << 12)
--#define		ATMEL_US_CHMODE		(3 << 14)		/* Channel Mode */
--#define			ATMEL_US_CHMODE_NORMAL		(0 << 14)
--#define			ATMEL_US_CHMODE_ECHO		(1 << 14)
--#define			ATMEL_US_CHMODE_LOC_LOOP	(2 << 14)
--#define			ATMEL_US_CHMODE_REM_LOOP	(3 << 14)
--#define		ATMEL_US_MSBF		(1 << 16)		/* Bit Order */
--#define		ATMEL_US_MODE9		(1 << 17)		/* 9-bit Character Length */
--#define		ATMEL_US_CLKO		(1 << 18)		/* Clock Output Select */
--#define		ATMEL_US_OVER		(1 << 19)		/* Oversampling Mode */
--#define		ATMEL_US_INACK		(1 << 20)		/* Inhibit Non Acknowledge */
--#define		ATMEL_US_DSNACK		(1 << 21)		/* Disable Successive NACK */
--#define		ATMEL_US_MAX_ITER	(7 << 24)		/* Max Iterations */
--#define		ATMEL_US_FILTER		(1 << 28)		/* Infrared Receive Line Filter */
--
--#define ATMEL_US_IER		0x08			/* Interrupt Enable Register */
--#define		ATMEL_US_RXRDY		(1 <<  0)		/* Receiver Ready */
--#define		ATMEL_US_TXRDY		(1 <<  1)		/* Transmitter Ready */
--#define		ATMEL_US_RXBRK		(1 <<  2)		/* Break Received / End of Break */
--#define		ATMEL_US_ENDRX		(1 <<  3)		/* End of Receiver Transfer */
--#define		ATMEL_US_ENDTX		(1 <<  4)		/* End of Transmitter Transfer */
--#define		ATMEL_US_OVRE		(1 <<  5)		/* Overrun Error */
--#define		ATMEL_US_FRAME		(1 <<  6)		/* Framing Error */
--#define		ATMEL_US_PARE		(1 <<  7)		/* Parity Error */
--#define		ATMEL_US_TIMEOUT	(1 <<  8)		/* Receiver Time-out */
--#define		ATMEL_US_TXEMPTY	(1 <<  9)		/* Transmitter Empty */
--#define		ATMEL_US_ITERATION	(1 << 10)		/* Max number of Repetitions Reached */
--#define		ATMEL_US_TXBUFE		(1 << 11)		/* Transmission Buffer Empty */
--#define		ATMEL_US_RXBUFF		(1 << 12)		/* Reception Buffer Full */
--#define		ATMEL_US_NACK		(1 << 13)		/* Non Acknowledge */
--#define		ATMEL_US_RIIC		(1 << 16)		/* Ring Indicator Input Change [AT91RM9200 only] */
--#define		ATMEL_US_DSRIC		(1 << 17)		/* Data Set Ready Input Change [AT91RM9200 only] */
--#define		ATMEL_US_DCDIC		(1 << 18)		/* Data Carrier Detect Input Change [AT91RM9200 only] */
--#define		ATMEL_US_CTSIC		(1 << 19)		/* Clear to Send Input Change */
--#define		ATMEL_US_RI		(1 << 20)		/* RI */
--#define		ATMEL_US_DSR		(1 << 21)		/* DSR */
--#define		ATMEL_US_DCD		(1 << 22)		/* DCD */
--#define		ATMEL_US_CTS		(1 << 23)		/* CTS */
--
--#define ATMEL_US_IDR		0x0c			/* Interrupt Disable Register */
--#define ATMEL_US_IMR		0x10			/* Interrupt Mask Register */
--#define ATMEL_US_CSR		0x14			/* Channel Status Register */
--#define ATMEL_US_RHR		0x18			/* Receiver Holding Register */
--#define ATMEL_US_THR		0x1c			/* Transmitter Holding Register */
--#define		ATMEL_US_SYNH		(1 << 15)		/* Transmit/Receive Sync [AT91SAM9261 only] */
+-	if (xfer) {
+-		len = xfer->len;
+-		atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
+-		remaining = xfer->len - len;
 -
--#define ATMEL_US_BRGR		0x20			/* Baud Rate Generator Register */
--#define		ATMEL_US_CD		(0xffff << 0)		/* Clock Divider */
+-		spi_writel(as, RPR, rx_dma);
+-		spi_writel(as, TPR, tx_dma);
 -
--#define ATMEL_US_RTOR		0x24			/* Receiver Time-out Register */
--#define		ATMEL_US_TO		(0xffff << 0)		/* Time-out Value */
+-		if (msg->spi->bits_per_word > 8)
+-			len >>= 1;
+-		spi_writel(as, RCR, len);
+-		spi_writel(as, TCR, len);
 -
--#define ATMEL_US_TTGR		0x28			/* Transmitter Timeguard Register */
--#define		ATMEL_US_TG		(0xff << 0)		/* Timeguard Value */
--
--#define ATMEL_US_FIDI		0x40			/* FI DI Ratio Register */
--#define ATMEL_US_NER		0x44			/* Number of Errors Register */
--#define ATMEL_US_IF		0x4c			/* IrDA Filter Register */
--
--#endif
---- a/drivers/serial/Kconfig
-+++ b/drivers/serial/Kconfig
-@@ -380,6 +380,21 @@
- 	  console is the device which receives all kernel messages and
- 	  warnings and which allows logins in single user mode).
- 
-+config SERIAL_ATMEL_PDC
-+	bool "Support DMA transfers on AT91 / AT32 serial port"
-+	depends on SERIAL_ATMEL
-+	default y
-+	help
-+	  Say Y here if you wish to use the PDC to do DMA transfers to
-+	  and from the Atmel AT91 / AT32 serial port. In order to
-+	  actually use DMA transfers, make sure that the use_dma_tx
-+	  and use_dma_rx members in the atmel_uart_data struct is set
-+	  appropriately for each port.
-+
-+	  Note that break and error handling currently doesn't work
-+	  properly when DMA is enabled. Make sure that ports where
-+	  this matters don't use DMA.
-+
- config SERIAL_ATMEL_TTYAT
- 	bool "Install as device ttyATn instead of ttySn"
- 	depends on SERIAL_ATMEL=y
---- a/drivers/spi/atmel_spi.c
-+++ b/drivers/spi/atmel_spi.c
-@@ -51,7 +51,9 @@
- 	u8			stopping;
- 	struct list_head	queue;
- 	struct spi_transfer	*current_transfer;
--	unsigned long		remaining_bytes;
-+	unsigned long		current_remaining_bytes;
-+	struct spi_transfer	*next_transfer;
-+	unsigned long		next_remaining_bytes;
- 
- 	void			*buffer;
- 	dma_addr_t		buffer_dma;
-@@ -113,6 +115,16 @@
- 	unsigned gpio = (unsigned) spi->controller_data;
- 	unsigned active = spi->mode & SPI_CS_HIGH;
- 	u32 mr;
-+	int i;
-+	u32 csr;
-+	u32 cpol = (spi->mode & SPI_CPOL) ? SPI_BIT(CPOL) : 0;
-+
-+	/* Make sure clock polarity is correct */
-+	for (i = 0; i < spi->master->num_chipselect; i++) {
-+		csr = spi_readl(as, CSR0 + 4 * i);
-+		if ((csr ^ cpol) & SPI_BIT(CPOL))
-+			spi_writel(as, CSR0 + 4 * i, csr ^ SPI_BIT(CPOL));
-+	}
- 
- 	/* only deactivate *this* device; sometimes transfers to
- 	 * another device may be active when this routine is called.
-@@ -131,6 +143,48 @@
- 		gpio_set_value(gpio, !active);
- }
+-		dev_dbg(&msg->spi->dev,
+-			"  start xfer %p: len %u tx %p/%08x rx %p/%08x\n",
+-			xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
+-			xfer->rx_buf, xfer->rx_dma);
+-	} else {
+-		xfer = as->next_transfer;
+-		remaining = as->next_remaining_bytes;
++	xfer = as->current_transfer;
++	if (!xfer || as->remaining_bytes == 0) {
++		if (xfer)
++			xfer = list_entry(xfer->transfer_list.next,
++					struct spi_transfer, transfer_list);
++		else
++			xfer = list_entry(msg->transfers.next,
++					struct spi_transfer, transfer_list);
++		as->remaining_bytes = xfer->len;
++		as->current_transfer = xfer;
+ 	}
  
-+static inline int atmel_spi_xfer_is_last(struct spi_message *msg,
-+					struct spi_transfer *xfer)
-+{
-+	return msg->transfers.prev == &xfer->transfer_list;
-+}
-+
-+static inline int atmel_spi_xfer_can_be_chained(struct spi_transfer *xfer)
-+{
-+	return xfer->delay_usecs == 0 && !xfer->cs_change;
-+}
-+
-+static void atmel_spi_next_xfer_data(struct spi_master *master,
-+				struct spi_transfer *xfer,
-+				dma_addr_t *tx_dma,
-+				dma_addr_t *rx_dma,
-+				u32 *plen)
-+{
-+	struct atmel_spi	*as = spi_master_get_devdata(master);
-+	u32			len = *plen;
-+
+-	as->current_transfer = xfer;
+-	as->current_remaining_bytes = remaining;
+-
+-	if (remaining > 0)
+-		len = remaining;
+-	else if (!atmel_spi_xfer_is_last(msg, xfer)
+-			&& atmel_spi_xfer_can_be_chained(xfer)) {
+-		xfer = list_entry(xfer->transfer_list.next,
+-				struct spi_transfer, transfer_list);
+-		len = xfer->len;
+-	} else
+-		xfer = NULL;
++	len = as->remaining_bytes;
+ 
+-	as->next_transfer = xfer;
++	tx_dma = xfer->tx_dma + xfer->len - len;
++	rx_dma = xfer->rx_dma + xfer->len - len;
+ 
+-	if (xfer) {
+-		total = len;
+-		atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
+-		as->next_remaining_bytes = total - len;
+-
+-		spi_writel(as, RNPR, rx_dma);
+-		spi_writel(as, TNPR, tx_dma);
+-
+-		if (msg->spi->bits_per_word > 8)
+-			len >>= 1;
+-		spi_writel(as, RNCR, len);
+-		spi_writel(as, TNCR, len);
+-
+-		dev_dbg(&msg->spi->dev,
+-			"  next xfer %p: len %u tx %p/%08x rx %p/%08x\n",
+-			xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
+-			xfer->rx_buf, xfer->rx_dma);
+-	} else {
+-		spi_writel(as, RNCR, 0);
+-		spi_writel(as, TNCR, 0);
 +	/* use scratch buffer only when rx or tx data is unspecified */
-+	if (xfer->rx_buf)
-+		*rx_dma = xfer->rx_dma + xfer->len - len;
-+	else {
-+		*rx_dma = as->buffer_dma;
++	if (!xfer->rx_buf) {
++		rx_dma = as->buffer_dma;
 +		if (len > BUFFER_SIZE)
 +			len = BUFFER_SIZE;
-+	}
-+	if (xfer->tx_buf)
-+		*tx_dma = xfer->tx_dma + xfer->len - len;
-+	else {
-+		*tx_dma = as->buffer_dma;
+ 	}
++	if (!xfer->tx_buf) {
++		tx_dma = as->buffer_dma;
 +		if (len > BUFFER_SIZE)
 +			len = BUFFER_SIZE;
 +		memset(as->buffer, 0, len);
@@ -17595,194 +14381,69 @@
 +				as->buffer_dma, len, DMA_TO_DEVICE);
 +	}
 +
-+	*plen = len;
-+}
-+
- /*
-  * Submit next transfer for DMA.
-  * lock is held, spi irq is blocked
-@@ -140,53 +194,78 @@
- {
- 	struct atmel_spi	*as = spi_master_get_devdata(master);
- 	struct spi_transfer	*xfer;
--	u32			len;
-+	u32			len, remaining, total;
- 	dma_addr_t		tx_dma, rx_dma;
++	spi_writel(as, RPR, rx_dma);
++	spi_writel(as, TPR, tx_dma);
  
--	xfer = as->current_transfer;
--	if (!xfer || as->remaining_bytes == 0) {
--		if (xfer)
--			xfer = list_entry(xfer->transfer_list.next,
--					struct spi_transfer, transfer_list);
--		else
--			xfer = list_entry(msg->transfers.next,
--					struct spi_transfer, transfer_list);
--		as->remaining_bytes = xfer->len;
--		as->current_transfer = xfer;
-+	if (!as->current_transfer)
-+		xfer = list_entry(msg->transfers.next,
-+				struct spi_transfer, transfer_list);
-+	else if (!as->next_transfer)
-+		xfer = list_entry(as->current_transfer->transfer_list.next,
-+				struct spi_transfer, transfer_list);
-+	else
-+		xfer = NULL;
-+
-+	if (xfer) {
-+		len = xfer->len;
-+		atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
-+		remaining = xfer->len - len;
+-	/* REVISIT: We're waiting for ENDRX before we start the next
++	as->remaining_bytes -= len;
++	if (msg->spi->bits_per_word > 8)
++		len >>= 1;
 +
-+		spi_writel(as, RPR, rx_dma);
-+		spi_writel(as, TPR, tx_dma);
-+
-+		if (msg->spi->bits_per_word > 8)
-+			len >>= 1;
-+		spi_writel(as, RCR, len);
-+		spi_writel(as, TCR, len);
-+
-+		dev_dbg(&msg->spi->dev,
-+			"  start xfer %p: len %u tx %p/%08x rx %p/%08x\n",
-+			xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
-+			xfer->rx_buf, xfer->rx_dma);
-+	} else {
-+		xfer = as->next_transfer;
-+		remaining = as->next_remaining_bytes;
- 	}
- 
--	len = as->remaining_bytes;
-+	as->current_transfer = xfer;
-+	as->current_remaining_bytes = remaining;
- 
--	tx_dma = xfer->tx_dma + xfer->len - len;
--	rx_dma = xfer->rx_dma + xfer->len - len;
-+	if (remaining > 0)
-+		len = remaining;
-+	else if (!atmel_spi_xfer_is_last(msg, xfer)
-+			&& atmel_spi_xfer_can_be_chained(xfer)) {
-+		xfer = list_entry(xfer->transfer_list.next,
-+				struct spi_transfer, transfer_list);
-+		len = xfer->len;
-+	} else
-+		xfer = NULL;
- 
--	/* use scratch buffer only when rx or tx data is unspecified */
--	if (!xfer->rx_buf) {
--		rx_dma = as->buffer_dma;
--		if (len > BUFFER_SIZE)
--			len = BUFFER_SIZE;
--	}
--	if (!xfer->tx_buf) {
--		tx_dma = as->buffer_dma;
--		if (len > BUFFER_SIZE)
--			len = BUFFER_SIZE;
--		memset(as->buffer, 0, len);
--		dma_sync_single_for_device(&as->pdev->dev,
--				as->buffer_dma, len, DMA_TO_DEVICE);
--	}
-+	as->next_transfer = xfer;
- 
--	spi_writel(as, RPR, rx_dma);
--	spi_writel(as, TPR, tx_dma);
-+	if (xfer) {
-+		total = len;
-+		atmel_spi_next_xfer_data(master, xfer, &tx_dma, &rx_dma, &len);
-+		as->next_remaining_bytes = total - len;
-+
-+		spi_writel(as, RNPR, rx_dma);
-+		spi_writel(as, TNPR, tx_dma);
-+
-+		if (msg->spi->bits_per_word > 8)
-+			len >>= 1;
-+		spi_writel(as, RNCR, len);
-+		spi_writel(as, TNCR, len);
-+
-+		dev_dbg(&msg->spi->dev,
-+			"  next xfer %p: len %u tx %p/%08x rx %p/%08x\n",
-+			xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
-+			xfer->rx_buf, xfer->rx_dma);
-+	} else {
-+		spi_writel(as, RNCR, 0);
-+		spi_writel(as, TNCR, 0);
-+	}
- 
--	as->remaining_bytes -= len;
--	if (msg->spi->bits_per_word > 8)
--		len >>= 1;
--
--	/* REVISIT: when xfer->delay_usecs == 0, the PDC "next transfer"
--	 * mechanism might help avoid the IRQ latency between transfers
--	 * (and improve the nCS0 errata handling on at91rm9200 chips)
--	 *
--	 * We're also waiting for ENDRX before we start the next
-+	/* REVISIT: We're waiting for ENDRX before we start the next
++	/* REVISIT: when xfer->delay_usecs == 0, the PDC "next transfer"
++	 * mechanism might help avoid the IRQ latency between transfers
++	 * (and improve the nCS0 errata handling on at91rm9200 chips)
++	 *
++	 * We're also waiting for ENDRX before we start the next
  	 * transfer because we need to handle some difficult timing
  	 * issues otherwise. If we wait for ENDTX in one transfer and
  	 * then starts waiting for ENDRX in the next, it's difficult
-@@ -196,17 +275,7 @@
+@@ -265,7 +196,17 @@
  	 *
  	 * It should be doable, though. Just not now...
  	 */
--	spi_writel(as, TNCR, 0);
--	spi_writel(as, RNCR, 0);
++	spi_writel(as, TNCR, 0);
++	spi_writel(as, RNCR, 0);
  	spi_writel(as, IER, SPI_BIT(ENDRX) | SPI_BIT(OVRES));
--
--	dev_dbg(&msg->spi->dev,
--		"  start xfer %p: len %u tx %p/%08x rx %p/%08x imr %03x\n",
--		xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
--		xfer->rx_buf, xfer->rx_dma, spi_readl(as, IMR));
--
--	spi_writel(as, RCR, len);
--	spi_writel(as, TCR, len);
++
++	dev_dbg(&msg->spi->dev,
++		"  start xfer %p: len %u tx %p/%08x rx %p/%08x imr %03x\n",
++		xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
++		xfer->rx_buf, xfer->rx_dma, spi_readl(as, IMR));
++
++	spi_writel(as, RCR, len);
++	spi_writel(as, TCR, len);
  	spi_writel(as, PTCR, SPI_BIT(TXTEN) | SPI_BIT(RXTEN));
  }
  
-@@ -304,6 +373,7 @@
+@@ -363,7 +304,6 @@
  	spin_lock(&as->lock);
  
  	as->current_transfer = NULL;
-+	as->next_transfer = NULL;
+-	as->next_transfer = NULL;
  
  	/* continue if needed */
  	if (list_empty(&as->queue) || as->stopping)
-@@ -387,7 +457,7 @@
+@@ -447,7 +387,7 @@
  
  		spi_writel(as, IDR, pending);
  
--		if (as->remaining_bytes == 0) {
-+		if (as->current_remaining_bytes == 0) {
+-		if (as->current_remaining_bytes == 0) {
++		if (as->remaining_bytes == 0) {
  			msg->actual_length += xfer->len;
  
  			if (!msg->is_dma_mapped)
-@@ -397,7 +467,7 @@
+@@ -457,7 +397,7 @@
  			if (xfer->delay_usecs)
  				udelay(xfer->delay_usecs);
  
--			if (msg->transfers.prev == &xfer->transfer_list) {
-+			if (atmel_spi_xfer_is_last(msg, xfer)) {
+-			if (atmel_spi_xfer_is_last(msg, xfer)) {
++			if (msg->transfers.prev == &xfer->transfer_list) {
  				/* report completed message */
  				atmel_spi_msg_done(master, as, msg, 0,
  						xfer->cs_change);
-@@ -500,9 +570,14 @@
- 	if (!(spi->mode & SPI_CPHA))
- 		csr |= SPI_BIT(NCPHA);
- 
--	/* TODO: DLYBS and DLYBCT */
--	csr |= SPI_BF(DLYBS, 10);
--	csr |= SPI_BF(DLYBCT, 10);
-+	/* DLYBS is mostly irrelevant since we manage chipselect using GPIOs.
-+	 *
-+	 * DLYBCT would add delays between words, slowing down transfers.
-+	 * It could potentially be useful to cope with DMA bottlenecks, but
-+	 * in those cases it's probably best to just use a lower bitrate.
-+	 */
-+	csr |= SPI_BF(DLYBS, 0);
-+	csr |= SPI_BF(DLYBCT, 0);
- 
- 	/* chipselect must have been muxed as GPIO (e.g. in board setup) */
- 	npcs_pin = (unsigned int)spi->controller_data;
---- a/drivers/usb/gadget/atmel_usba_udc.c
-+++ b/drivers/usb/gadget/atmel_usba_udc.c
+diff --exclude=.git -urN linux-2.6.25.6/drivers/usb/gadget/atmel_usba_udc.c avr32-2.6/drivers/usb/gadget/atmel_usba_udc.c
+--- linux-2.6.25.6/drivers/usb/gadget/atmel_usba_udc.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/usb/gadget/atmel_usba_udc.c	2008-06-12 15:09:42.586816287 +0200
 @@ -18,6 +18,7 @@
  #include <linux/platform_device.h>
  #include <linux/usb/ch9.h>
@@ -17799,14 +14460,15 @@
  
  #ifdef CONFIG_USB_GADGET_DEBUG_FS
  #include <linux/debugfs.h>
-@@ -324,53 +326,6 @@
+@@ -324,53 +326,28 @@
  	return 1;
  }
  
 -static void copy_to_fifo(void __iomem *fifo, const void *buf, int len)
 -{
 -	unsigned long tmp;
--
++#if defined(CONFIG_AVR32)
+ 
 -	DBG(DBG_FIFO, "copy to FIFO (len %d):\n", len);
 -	for (; len > 0; len -= 4, buf += 4, fifo += 4) {
 -		tmp = *(unsigned long *)buf;
@@ -17823,10 +14485,17 @@
 -			break;
 -		}
 -	}
--}
--
++static void toggle_bias(int is_on)
++{
+ }
+ 
 -static void copy_from_fifo(void *buf, void __iomem *fifo, int len)
--{
++#elif defined(CONFIG_ARCH_AT91)
++
++#include <asm/arch/at91_pmc.h>
++
++static void toggle_bias(int is_on)
+ {
 -	union {
 -		unsigned long *w;
 -		unsigned char *b;
@@ -17848,12 +14517,20 @@
 -			} while (--len);
 -		}
 -	}
--}
--
++	unsigned int uckr = at91_sys_read(AT91_CKGR_UCKR);
++
++	if (is_on)
++		at91_sys_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN);
++	else
++		at91_sys_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN));
+ }
+ 
++#endif /* CONFIG_ARCH_AT91 */
++
  static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req)
  {
  	unsigned int transaction_len;
-@@ -387,7 +342,7 @@
+@@ -387,7 +364,7 @@
  		ep->ep.name, req, transaction_len,
  		req->last_transaction ? ", done" : "");
  
@@ -17862,7 +14539,7 @@
  	usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
  	req->req.actual += transaction_len;
  }
-@@ -476,7 +431,7 @@
+@@ -476,7 +453,7 @@
  			bytecount = req->req.length - req->req.actual;
  		}
  
@@ -17871,7 +14548,7 @@
  				ep->fifo, bytecount);
  		req->req.actual += bytecount;
  
-@@ -1029,33 +984,6 @@
+@@ -1029,33 +1006,6 @@
  	.set_selfpowered	= usba_udc_set_selfpowered,
  };
  
@@ -17905,7 +14582,7 @@
  static struct usb_endpoint_descriptor usba_ep0_desc = {
  	.bLength = USB_DT_ENDPOINT_SIZE,
  	.bDescriptorType = USB_DT_ENDPOINT,
-@@ -1074,7 +1002,6 @@
+@@ -1074,7 +1024,6 @@
  static struct usba_udc the_udc = {
  	.gadget	= {
  		.ops		= &usba_udc_ops,
@@ -17913,7 +14590,7 @@
  		.ep_list	= LIST_HEAD_INIT(the_udc.gadget.ep_list),
  		.is_dualspeed	= 1,
  		.name		= "atmel_usba_udc",
-@@ -1231,7 +1158,7 @@
+@@ -1231,7 +1180,7 @@
  		} else {
  			usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE);
  			usba_writel(udc, TST, USBA_TST_PKT_MODE);
@@ -17922,7 +14599,14 @@
  					sizeof(test_packet_buffer));
  			usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
  			dev_info(dev, "Entering Test_Packet mode...\n");
-@@ -1539,7 +1466,7 @@
+@@ -1530,13 +1479,13 @@
+ 		DBG(DBG_HW, "Packet length: %u\n", pkt_len);
+ 		if (pkt_len != sizeof(crq)) {
+ 			pr_warning("udc: Invalid packet length %u "
+-				"(expected %lu)\n", pkt_len, sizeof(crq));
++				"(expected %zu)\n", pkt_len, sizeof(crq));
+ 			set_protocol_stall(udc, ep);
+ 			return;
  		}
  
  		DBG(DBG_FIFO, "Copying ctrl request from 0x%p:\n", ep->fifo);
@@ -17931,7 +14615,60 @@
  
  		/* Free up one bank in the FIFO so that we can
  		 * generate or receive a reply right away. */
-@@ -1911,7 +1838,7 @@
+@@ -1688,6 +1637,7 @@
+ 	DBG(DBG_INT, "irq, status=%#08x\n", status);
+ 
+ 	if (status & USBA_DET_SUSPEND) {
++		toggle_bias(0);
+ 		usba_writel(udc, INT_CLR, USBA_DET_SUSPEND);
+ 		DBG(DBG_BUS, "Suspend detected\n");
+ 		if (udc->gadget.speed != USB_SPEED_UNKNOWN
+@@ -1699,6 +1649,7 @@
+ 	}
+ 
+ 	if (status & USBA_WAKE_UP) {
++		toggle_bias(1);
+ 		usba_writel(udc, INT_CLR, USBA_WAKE_UP);
+ 		DBG(DBG_BUS, "Wake Up CPU detected\n");
+ 	}
+@@ -1792,12 +1743,14 @@
+ 	vbus = gpio_get_value(udc->vbus_pin);
+ 	if (vbus != udc->vbus_prev) {
+ 		if (vbus) {
+-			usba_writel(udc, CTRL, USBA_EN_USBA);
++			toggle_bias(1);
++			usba_writel(udc, CTRL, USBA_ENABLE_MASK);
+ 			usba_writel(udc, INT_ENB, USBA_END_OF_RESET);
+ 		} else {
+ 			udc->gadget.speed = USB_SPEED_UNKNOWN;
+ 			reset_all_endpoints(udc);
+-			usba_writel(udc, CTRL, 0);
++			toggle_bias(0);
++			usba_writel(udc, CTRL, USBA_DISABLE_MASK);
+ 			spin_unlock(&udc->lock);
+ 			udc->driver->disconnect(&udc->gadget);
+ 			spin_lock(&udc->lock);
+@@ -1850,7 +1803,8 @@
+ 	/* If Vbus is present, enable the controller and wait for reset */
+ 	spin_lock_irqsave(&udc->lock, flags);
+ 	if (vbus_is_present(udc) && udc->vbus_prev == 0) {
+-		usba_writel(udc, CTRL, USBA_EN_USBA);
++		toggle_bias(1);
++		usba_writel(udc, CTRL, USBA_ENABLE_MASK);
+ 		usba_writel(udc, INT_ENB, USBA_END_OF_RESET);
+ 	}
+ 	spin_unlock_irqrestore(&udc->lock, flags);
+@@ -1883,7 +1837,8 @@
+ 	spin_unlock_irqrestore(&udc->lock, flags);
+ 
+ 	/* This will also disable the DP pullup */
+-	usba_writel(udc, CTRL, 0);
++	toggle_bias(0);
++	usba_writel(udc, CTRL, USBA_DISABLE_MASK);
+ 
+ 	driver->unbind(&udc->gadget);
+ 	udc->gadget.dev.driver = NULL;
+@@ -1908,7 +1863,7 @@
  
  	regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID);
  	fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID);
@@ -17940,8 +14677,13 @@
  		return -ENXIO;
  
  	irq = platform_get_irq(pdev, 0);
-@@ -1959,16 +1886,44 @@
- 	usba_writel(udc, CTRL, 0);
+@@ -1953,19 +1908,48 @@
+ 
+ 	/* Make sure we start from a clean slate */
+ 	clk_enable(pclk);
+-	usba_writel(udc, CTRL, 0);
++	toggle_bias(0);
++	usba_writel(udc, CTRL, USBA_DISABLE_MASK);
  	clk_disable(pclk);
  
 +	usba_ep = kmalloc(sizeof(struct usba_ep) * pdata->num_ep,
@@ -17986,7 +14728,7 @@
  
  		list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
  	}
-@@ -1987,7 +1942,7 @@
+@@ -1984,7 +1968,7 @@
  		goto err_device_add;
  	}
  
@@ -17995,7 +14737,7 @@
  		if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) {
  			udc->vbus_pin = pdata->vbus_pin;
  
-@@ -2007,7 +1962,7 @@
+@@ -2004,7 +1988,7 @@
  	}
  
  	usba_init_debugfs(udc);
@@ -18004,7 +14746,7 @@
  		usba_ep_init_debugfs(udc, &usba_ep[i]);
  
  	return 0;
-@@ -2015,6 +1970,8 @@
+@@ -2012,6 +1996,8 @@
  err_device_add:
  	free_irq(irq, udc);
  err_request_irq:
@@ -18013,7 +14755,7 @@
  	iounmap(udc->fifo);
  err_map_fifo:
  	iounmap(udc->regs);
-@@ -2032,10 +1989,11 @@
+@@ -2029,10 +2015,11 @@
  {
  	struct usba_udc *udc;
  	int i;
@@ -18026,17 +14768,53 @@
  		usba_ep_cleanup_debugfs(&usba_ep[i]);
  	usba_cleanup_debugfs(udc);
  
---- a/drivers/video/atmel_lcdfb.c
-+++ b/drivers/video/atmel_lcdfb.c
-@@ -16,6 +16,7 @@
- #include <linux/fb.h>
- #include <linux/init.h>
- #include <linux/delay.h>
-+#include <linux/backlight.h>
+@@ -2040,6 +2027,7 @@
+ 		gpio_free(udc->vbus_pin);
  
- #include <asm/arch/board.h>
- #include <asm/arch/cpu.h>
-@@ -37,7 +38,9 @@
+ 	free_irq(udc->irq, udc);
++	kfree(usba_ep);
+ 	iounmap(udc->fifo);
+ 	iounmap(udc->regs);
+ 	clk_put(udc->hclk);
+diff --exclude=.git -urN linux-2.6.25.6/drivers/usb/gadget/atmel_usba_udc.h avr32-2.6/drivers/usb/gadget/atmel_usba_udc.h
+--- linux-2.6.25.6/drivers/usb/gadget/atmel_usba_udc.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/usb/gadget/atmel_usba_udc.h	2008-06-12 15:04:02.443815949 +0200
+@@ -41,6 +41,15 @@
+ #define USBA_EN_USBA				(1 <<  8)
+ #define USBA_DETACH				(1 <<  9)
+ #define USBA_REMOTE_WAKE_UP			(1 << 10)
++#define USBA_PULLD_DIS				(1 << 11)
++
++#if defined(CONFIG_AVR32)
++#define USBA_ENABLE_MASK			USBA_EN_USBA
++#define USBA_DISABLE_MASK			0
++#elif defined(CONFIG_ARCH_AT91)
++#define USBA_ENABLE_MASK			(USBA_EN_USBA | USBA_PULLD_DIS)
++#define USBA_DISABLE_MASK			USBA_DETACH
++#endif /* CONFIG_ARCH_AT91 */
+ 
+ /* Bitfields in FNUM */
+ #define USBA_MICRO_FRAME_NUM_OFFSET		0
+diff --exclude=.git -urN linux-2.6.25.6/drivers/usb/gadget/Kconfig avr32-2.6/drivers/usb/gadget/Kconfig
+--- linux-2.6.25.6/drivers/usb/gadget/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/usb/gadget/Kconfig	2008-06-12 15:09:42.582816057 +0200
+@@ -118,10 +118,10 @@
+ config USB_GADGET_ATMEL_USBA
+ 	boolean "Atmel USBA"
+ 	select USB_GADGET_DUALSPEED
+-	depends on AVR32
++	depends on AVR32 || ARCH_AT91CAP9
+ 	help
+ 	  USBA is the integrated high-speed USB Device controller on
+-	  the AT32AP700x processors from Atmel.
++	  the AT32AP700x and AT91CAP9 processors from Atmel.
+ 
+ config USB_ATMEL_USBA
+ 	tristate
+diff --exclude=.git -urN linux-2.6.25.6/drivers/video/atmel_lcdfb.c avr32-2.6/drivers/video/atmel_lcdfb.c
+--- linux-2.6.25.6/drivers/video/atmel_lcdfb.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/drivers/video/atmel_lcdfb.c	2008-06-12 15:09:43.343816340 +0200
+@@ -38,7 +38,9 @@
  #endif
  
  #if defined(CONFIG_ARCH_AT91)
@@ -18047,357 +14825,32539 @@
  
  static inline void atmel_lcdfb_update_dma2d(struct atmel_lcdfb_info *sinfo,
  					struct fb_var_screeninfo *var)
-@@ -69,12 +72,113 @@
+@@ -176,7 +178,7 @@
+ 	.type		= FB_TYPE_PACKED_PIXELS,
+ 	.visual		= FB_VISUAL_TRUECOLOR,
+ 	.xpanstep	= 0,
+-	.ypanstep	= 0,
++	.ypanstep	= 1,
+ 	.ywrapstep	= 0,
+ 	.accel		= FB_ACCEL_NONE,
+ };
+@@ -250,6 +252,8 @@
+ 		return -ENOMEM;
+ 	}
+ 
++	memset(info->screen_base, 0, info->fix.smem_len);
++
+ 	return 0;
  }
- #endif
  
-+static const u32 contrast_ctr = ATMEL_LCDC_PS_DIV8
-+		| ATMEL_LCDC_POL_POSITIVE
-+		| ATMEL_LCDC_ENA_PWMENABLE;
+@@ -634,7 +638,6 @@
+ 	struct fb_info *info = sinfo->info;
+ 	int ret = 0;
+ 
+-	memset_io(info->screen_base, 0, info->fix.smem_len);
+ 	info->var.activate |= FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW;
+ 
+ 	dev_info(info->device,
+@@ -764,6 +767,11 @@
+ 		info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
+ 		if (!info->screen_base)
+ 			goto release_intmem;
 +
-+#ifdef CONFIG_BACKLIGHT_ATMEL_LCDC
++		/*
++		 * Don't clear the framebuffer -- someone may have set
++		 * up a splash image.
++		 */
+ 	} else {
+ 		/* alocate memory buffer */
+ 		ret = atmel_lcdfb_alloc_video_memory(sinfo);
+diff --exclude=.git -urN linux-2.6.25.6/fs/fs-writeback.c avr32-2.6/fs/fs-writeback.c
+--- linux-2.6.25.6/fs/fs-writeback.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/fs/fs-writeback.c	2008-06-12 15:09:44.531816544 +0200
+@@ -385,8 +385,6 @@
+  * WB_SYNC_HOLD is a hack for sys_sync(): reattach the inode to sb->s_dirty so
+  * that it can be located for waiting on in __writeback_single_inode().
+  *
+- * Called under inode_lock.
+- *
+  * If `bdi' is non-zero then we're being asked to writeback a specific queue.
+  * This function assumes that the blockdev superblock's inodes are backed by
+  * a variety of queues, so all inodes are searched.  For other superblocks,
+@@ -402,11 +400,12 @@
+  * on the writer throttling path, and we get decent balancing between many
+  * throttled threads: we don't want them all piling up on inode_sync_wait.
+  */
+-static void
+-sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
++void generic_sync_sb_inodes(struct super_block *sb,
++				struct writeback_control *wbc)
+ {
+ 	const unsigned long start = jiffies;	/* livelock avoidance */
+ 
++	spin_lock(&inode_lock);
+ 	if (!wbc->for_kupdate || list_empty(&sb->s_io))
+ 		queue_io(sb, wbc->older_than_this);
+ 
+@@ -485,8 +484,16 @@
+ 		if (!list_empty(&sb->s_more_io))
+ 			wbc->more_io = 1;
+ 	}
++	spin_unlock(&inode_lock);
+ 	return;		/* Leave any unwritten inodes on s_io */
+ }
++EXPORT_SYMBOL_GPL(generic_sync_sb_inodes);
 +
-+/* some bl->props field just changed */
-+static int atmel_bl_update_status(struct backlight_device *bl)
++static void sync_sb_inodes(struct super_block *sb,
++				struct writeback_control *wbc)
 +{
-+	struct atmel_lcdfb_info *sinfo = bl_get_data(bl);
-+	int			power = sinfo->bl_power;
-+	int			brightness = bl->props.brightness;
++	generic_sync_sb_inodes(sb, wbc);
++}
+ 
+ /*
+  * Start writeback of dirty pagecache data against all unlocked inodes.
+@@ -526,11 +533,8 @@
+ 			 * be unmounted by the time it is released.
+ 			 */
+ 			if (down_read_trylock(&sb->s_umount)) {
+-				if (sb->s_root) {
+-					spin_lock(&inode_lock);
++				if (sb->s_root)
+ 					sync_sb_inodes(sb, wbc);
+-					spin_unlock(&inode_lock);
+-				}
+ 				up_read(&sb->s_umount);
+ 			}
+ 			spin_lock(&sb_lock);
+@@ -568,9 +572,7 @@
+ 			(inodes_stat.nr_inodes - inodes_stat.nr_unused) +
+ 			nr_dirty + nr_unstable;
+ 	wbc.nr_to_write += wbc.nr_to_write / 2;		/* Bit more for luck */
+-	spin_lock(&inode_lock);
+ 	sync_sb_inodes(sb, &wbc);
+-	spin_unlock(&inode_lock);
+ }
+ 
+ /*
+diff --exclude=.git -urN linux-2.6.25.6/fs/Kconfig avr32-2.6/fs/Kconfig
+--- linux-2.6.25.6/fs/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/fs/Kconfig	2008-06-12 15:09:43.915816293 +0200
+@@ -1347,6 +1347,9 @@
+ 
+ endchoice
+ 
++# UBIFS File system configuration
++source "fs/ubifs/Kconfig"
++
+ config CRAMFS
+ 	tristate "Compressed ROM file system support (cramfs)"
+ 	depends on BLOCK
+diff --exclude=.git -urN linux-2.6.25.6/fs/Makefile avr32-2.6/fs/Makefile
+--- linux-2.6.25.6/fs/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/fs/Makefile	2008-06-12 15:09:43.915816293 +0200
+@@ -100,6 +100,7 @@
+ obj-$(CONFIG_UFS_FS)		+= ufs/
+ obj-$(CONFIG_EFS_FS)		+= efs/
+ obj-$(CONFIG_JFFS2_FS)		+= jffs2/
++obj-$(CONFIG_UBIFS_FS)		+= ubifs/
+ obj-$(CONFIG_AFFS_FS)		+= affs/
+ obj-$(CONFIG_ROMFS_FS)		+= romfs/
+ obj-$(CONFIG_QNX4FS_FS)		+= qnx4/
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/budget.c avr32-2.6/fs/ubifs/budget.c
+--- linux-2.6.25.6/fs/ubifs/budget.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/budget.c	2008-06-12 15:09:45.311815896 +0200
+@@ -0,0 +1,863 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements the budgeting unit which is responsible for UBIFS space
++ * management.
++ *
++ * Factors such as compression, wasted space at the ends of LEBs, space in other
++ * journal heads, the effect of updates on the index, and so on, make it
++ * impossible to accurately predict the amount of space needed. Consequently
++ * approximations are used.
++ */
++
++#include "ubifs.h"
++#include <linux/writeback.h>
++#include <asm/div64.h>
 +
-+	/* REVISIT there may be a meaningful difference between
-+	 * fb_blank and power ... there seem to be some cases
-+	 * this doesn't handle correctly.
++/*
++ * When pessimistic budget calculations say that there is no enough space,
++ * UBIFS starts writing back dirty inodes and pages, doing garbage collection,
++ * or committing. The below constants define maximum number of times UBIFS
++ * repeats the operations.
++ */
++#define MAX_SHRINK_RETRIES 8
++#define MAX_GC_RETRIES     4
++#define MAX_CMT_RETRIES    2
++#define MAX_NOSPC_RETRIES  1
++
++/*
++ * The below constant defines amount of dirty pages which should be written
++ * back at when trying to shrink the liability.
++ */
++#define NR_TO_WRITE 16
++
++/**
++ * struct retries_info - information about re-tries while making free space.
++ * @prev_liability: previous liability
++ * @shrink_cnt: how many times the liability was shrinked
++ * @shrink_retries: count of liability shrink re-tries (increased when
++ *                  liability does not shrink)
++ * @try_gc: GC should be tried first
++ * @gc_retries: how many times GC was run
++ * @cmt_retries: how many times commit has been done
++ * @nospc_retries: how many times GC returned %-ENOSPC
++ *
++ * Since we consider budgeting to be the fast-path, and this structure has to
++ * be allocated on stack and zeroed out, we make it smaller using bit-fields.
++ */
++struct retries_info {
++	long long prev_liability;
++	unsigned int shrink_cnt;
++	unsigned int shrink_retries:5;
++	unsigned int try_gc:1;
++	unsigned int gc_retries:4;
++	unsigned int cmt_retries:3;
++	unsigned int nospc_retries:1;
++};
++
++/**
++ * shrink_liability - write-back some dirty pages/inodes.
++ * @c: UBIFS file-system description object
++ * @nr_to_write: how many dirty pages to write-back
++ *
++ * This function shrinks UBIFS liability by means of writing back some amount
++ * of dirty inodes and their pages. Returns the amount of pages which were
++ * written back. The returned value does not include dirty inodes which were
++ * synchronized.
++ *
++ * Note, this function synchronizes even VFS inodes which are locked
++ * (@i_mutex) by the caller of the budgeting function, because write-back does
++ * not touch @i_mutex.
++ */
++static int shrink_liability(struct ubifs_info *c, int nr_to_write)
++{
++	struct writeback_control wbc = {
++		.sync_mode   = WB_SYNC_NONE,
++		.range_end   = LLONG_MAX,
++		.nr_to_write = nr_to_write,
++	};
++
++	generic_sync_sb_inodes(c->vfs_sb, &wbc);
++	dbg_budg("%ld pages were written back", nr_to_write - wbc.nr_to_write);
++	return nr_to_write - wbc.nr_to_write;
++}
++
++
++/**
++ * run_gc - run garbage collector.
++ * @c: UBIFS file-system description object
++ *
++ * This function runs garbage collector to make some more free space. Returns
++ * zero if a free LEB has been produced, %-EAGAIN if commit is required, and a
++ * negative error code in case of failure.
++ */
++static int run_gc(struct ubifs_info *c)
++{
++	int err, lnum;
++
++	/* Make some free space by garbage-collecting dirty space */
++	down_read(&c->commit_sem);
++	lnum = ubifs_garbage_collect(c, 1);
++	up_read(&c->commit_sem);
++	if (lnum < 0)
++		return lnum;
++
++	/* GC freed one LEB, return it to lprops */
++	dbg_budg("GC freed LEB %d", lnum);
++	err = ubifs_return_leb(c, lnum);
++	if (err)
++		return err;
++
++	return 0;
++}
++
++/**
++ * make_free_space - make more free space on the file-system.
++ * @c: UBIFS file-system description object
++ * @ri: information about previous invocations of this function
++ *
++ * This function is called when an operation cannot be budgeted because there
++ * is supposedly no free space. But in most cases there is some free space:
++ *   o budgeting is pessimistic, so it always budgets more then it is actually
++ *     needed, so shrinking the liability is one way to make free space - the
++ *     cached data will take less space then it was budgeted for;
++ *   o GC may turn some dark space into free space (budgeting treats dark space
++ *     as not available);
++ *   o commit may free some LEB, i.e., turn freeable LEBs into free LEBs.
++ *
++ * So this function tries to do the above. Returns %-EAGAIN if some free space
++ * was presumably made and the caller has to re-try budgeting the operation.
++ * Returns %-ENOSPC if it couldn't do more free space, and other negative error
++ * codes on failures.
++ */
++static int make_free_space(struct ubifs_info *c, struct retries_info *ri)
++{
++	int err;
++
++	/*
++	 * If we have some dirty pages and inodes (liability), try to write
++	 * them back unless this was tried too many times without effect
++	 * already.
 +	 */
-+	if (bl->props.fb_blank != sinfo->bl_power)
-+		power = bl->props.fb_blank;
-+	else if (bl->props.power != sinfo->bl_power)
-+		power = bl->props.power;
++	if (ri->shrink_retries < MAX_SHRINK_RETRIES && !ri->try_gc) {
++		long long liability;
++
++		spin_lock(&c->space_lock);
++		liability = c->budg_idx_growth + c->budg_data_growth +
++			    c->budg_dd_growth;
++		spin_unlock(&c->space_lock);
++
++		if (ri->prev_liability >= liability) {
++			/* Liability does not shrink, next time try GC then */
++			ri->shrink_retries += 1;
++			if (ri->gc_retries < MAX_GC_RETRIES)
++				ri->try_gc = 1;
++			dbg_budg("liability did not shrink: retries %d of %d",
++				 ri->shrink_retries, MAX_SHRINK_RETRIES);
++		}
 +
-+	if (brightness < 0 && power == FB_BLANK_UNBLANK)
-+		brightness = lcdc_readl(sinfo, ATMEL_LCDC_CONTRAST_VAL);
-+	else if (power != FB_BLANK_UNBLANK)
-+		brightness = 0;
++		dbg_budg("force write-back (count %d)", ri->shrink_cnt);
++		shrink_liability(c, NR_TO_WRITE + ri->shrink_cnt);
 +
-+	lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_VAL, brightness);
-+	lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR,
-+			brightness ? contrast_ctr : 0);
++		ri->prev_liability = liability;
++		ri->shrink_cnt += 1;
++		return -EAGAIN;
++	}
++
++	/*
++	 * Try to run garbage collector unless it was already tried too many
++	 * times.
++	 */
++	if (ri->gc_retries < MAX_GC_RETRIES) {
++		ri->gc_retries += 1;
++		dbg_budg("run GC, retries %d of %d",
++			 ri->gc_retries, MAX_GC_RETRIES);
++
++		ri->try_gc = 0;
++		err = run_gc(c);
++		if (!err)
++			return -EAGAIN;
++
++		if (err == -EAGAIN) {
++			dbg_budg("GC asked to commit");
++			err = ubifs_run_commit(c);
++			if (err)
++				return err;
++			return -EAGAIN;
++		}
++
++		if (err != -ENOSPC)
++			return err;
++
++		/*
++		 * GC could not make any progress. If this is the first time,
++		 * then it makes sense to try to commit, because it might make
++		 * some dirty space.
++		 */
++		dbg_budg("GC returned -ENOSPC, retries %d",
++			 ri->nospc_retries);
++		if (ri->nospc_retries >= MAX_NOSPC_RETRIES)
++			return err;
++		ri->nospc_retries += 1;
++	}
++
++	/* Neither GC nor write-back helped, try to commit */
++	if (ri->cmt_retries < MAX_CMT_RETRIES) {
++		ri->cmt_retries += 1;
++		dbg_budg("run commit, retries %d of %d",
++			 ri->cmt_retries, MAX_CMT_RETRIES);
++		err = ubifs_run_commit(c);
++		if (err)
++			return err;
++		return -EAGAIN;
++	}
++
++	return -ENOSPC;
++}
++
++/**
++ * ubifs_calc_min_idx_lebs - calculate amount of eraseblocks for the index.
++ * @c: UBIFS file-system description object
++ *
++ * This function calculates and returns the number of eraseblocks which should
++ * be kept for index usage.
++ */
++int ubifs_calc_min_idx_lebs(struct ubifs_info *c)
++{
++	int ret;
++	uint64_t idx_size;
 +
-+	bl->props.fb_blank = bl->props.power = sinfo->bl_power = power;
++	idx_size = c->old_idx_sz + c->budg_idx_growth + c->budg_uncommitted_idx;
++
++	/* And make sure we have twice the index size of space reserved */
++	idx_size <<= 1;
++
++	/*
++	 * We do not maintain 'old_idx_size' as 'old_idx_lebs'/'old_idx_bytes'
++	 * pair, nor similarly the two variables for the new index size, so we
++	 * have to do this costly 64-bit division on fast-path.
++	 */
++	if (do_div(idx_size, c->leb_size - c->max_idx_node_sz))
++		ret = idx_size + 1;
++	else
++		ret = idx_size;
++	/*
++	 * The index head is not available for the in-the-gaps method, so add an
++	 * extra LEB to compensate.
++	 */
++	ret += 1;
++	/*
++	 * At present the index needs at least 2 LEBs: one for the index head
++	 * and one for in-the-gaps method (which currently does not cater for
++	 * the index head and so excludes it from consideration).
++	 */
++	if (ret < 2)
++		ret = 2;
++	return ret;
++}
++
++/**
++ * ubifs_calc_available - calculate available FS space.
++ * @c: UBIFS file-system description object
++ *
++ * This function calculates and returns amount of FS space available for use.
++ */
++long long ubifs_calc_available(const struct ubifs_info *c)
++{
++	long long available, subtract_lebs;
++
++	/*
++	 * Force the amount available to the total size reported if the used
++	 * space is zero.
++	 */
++	if (c->lst.total_used <= UBIFS_INO_NODE_SZ &&
++	    c->budg_data_growth + c->budg_dd_growth == 0) {
++		/* Do the same calculation as for c->block_cnt */
++		available = c->main_lebs - 2;
++		available *= c->leb_size - c->dark_wm;
++		return available;
++	}
++
++	available = c->main_bytes - c->lst.total_used;
++
++	/*
++	 * Now 'available' contains theoretically available flash space
++	 * assuming there is no index, so we have to subtract the space which
++	 * is reserved for the index.
++	 */
++	subtract_lebs = c->min_idx_lebs;
++
++	/* Take into account that GC reserves one LEB for its own needs */
++	subtract_lebs += 1;
++
++	/*
++	 * The GC journal head LEB is not really accessible. And since
++	 * different write types go to different heads, we may count only on
++	 * one head's space.
++	 */
++	subtract_lebs += c->jhead_cnt - 1;
++
++	/* We also reserve one LEB for deletions, which bypass budgeting */
++	subtract_lebs += 1;
++
++	available -= subtract_lebs * c->leb_size;
++
++	/* Subtract the dead space which is not available for use */
++	available -= c->lst.total_dead;
++
++	/*
++	 * Subtract dark space, which might or might not be usable - it depends
++	 * on the data which we have on the media and which will be written. If
++	 * this is a lot of uncompressed or not-compressible data, the dark
++	 * space cannot be used.
++	 */
++	available -= c->lst.total_dark;
++
++	/*
++	 * However, there is more dark space. The index may be bigger than
++	 * min_idx_lebs. Those extra LEBs are assumed to be available, but
++	 * their dark space is not included in total_dark, so it is subtracted
++	 * here.
++	 */
++	if (c->lst.idx_lebs > c->min_idx_lebs) {
++		subtract_lebs = c->lst.idx_lebs - c->min_idx_lebs;
++		available -= subtract_lebs * c->dark_wm;
++	}
++
++	/* The calculations are rough and may end up with a negative number */
++	return available > 0 ? available : 0;
++}
++
++/**
++ * rp_can_write - check whether the user is allowed to write.
++ * @c: UBIFS file-system description object
++ * @avail: available space on FS
++ *
++ * UBIFS has so-called "reserved pool" which is flash space reserved
++ * for the superuser and for uses whose UID/GID is recorded in UBIFS superblock.
++ * This function checks whether current user is allowed to write
++ * to the file-system - it returns %1 if there is plenty of space or the user
++ * is eligible to use the reserved pool and %0 otherwise.
++ */
++static int rp_can_write(struct ubifs_info *c, long long avail)
++{
++	if (avail > c->rp_size || current->fsuid == c->rp_uid ||
++	    capable(CAP_SYS_RESOURCE) ||
++	    (c->rp_gid != 0 && in_group_p(c->rp_gid)))
++		return 1;
++
++	return 0;
++}
++
++/**
++ * do_budget_space - reserve flash space for index and data growth.
++ * @c: UBIFS file-system description object
++ *
++ * This function makes sure UBIFS has enough free eraseblocks for index growth
++ * and data.
++ *
++ * When budgeting index space, UBIFS reserves twice as more LEBs as the index
++ * would take if it was consolidated and written to the flash. This guarantees
++ * that the "in-the-gaps" commit method always succeeds and UBIFS will always
++ * be able to commit dirty index. So this function basically adds amount of
++ * budgeted index space to the size of the current index, multiplies this by 2,
++ * and makes sure this does not exceed the amount of free eraseblocks.
++ *
++ * Notes about @c->min_idx_lebs and @c->lst.idx_lebs variables:
++ * o @c->lst.idx_lebs is the number of LEBs the index currently uses. It might
++ *    be large, because UBIFS does not do any index consolidation as long as
++ *    there is free space. IOW, the index may take a lot of LEBs, but the LEBs
++ *    will contain a lot of dirt.
++ * o @c->min_idx_lebs is the the index presumably takes. IOW, the index may be
++ *   consolidated to take up to @c->min_idx_lebs LEBs.
++ *
++ * This function returns zero in case of success, and %-ENOSPC in case of
++ * failure.
++ */
++static int do_budget_space(struct ubifs_info *c)
++{
++	long long outstanding, available;
++	int lebs, rsvd_idx_lebs, min_idx_lebs;
++
++	/* First budget index space */
++	min_idx_lebs = ubifs_calc_min_idx_lebs(c);
++
++	/* Now 'min_idx_lebs' contains number of LEBs to reserve */
++	if (min_idx_lebs > c->lst.idx_lebs)
++		rsvd_idx_lebs = min_idx_lebs - c->lst.idx_lebs;
++	else
++		rsvd_idx_lebs = 0;
++
++	/*
++	 * The number of LEBs that are available to be used by the index is:
++	 *
++	 *    @c->lst.empty_lebs + @c->freeable_cnt + @c->idx_gc_cnt -
++	 *    @c->lst.taken_empty_lebs
++	 *
++	 * @empty_lebs are available because they are empty. @freeable_cnt are
++	 * available because they contain only free and dirty space and the
++	 * index allocation always occurs after wbufs are synch'ed.
++	 * @idx_gc_cnt are available because they are index LEBs that have been
++	 * garbage collected (including trivial GC) and are awaiting the commit
++	 * before they can be unmapped - note that the in-the-gaps method will
++	 * grab these if it needs them. @taken_empty_lebs are empty_lebs that
++	 * have already been allocated for some purpose (also includes those
++	 * LEBs on the @idx_gc list).
++	 *
++	 * Note, @taken_empty_lebs may temporarily be higher by one because of
++	 * the way we serialize LEB allocations and budgeting. See a comment in
++	 * 'ubifs_find_free_space()'.
++	 */
++	lebs = c->lst.empty_lebs + c->freeable_cnt + c->idx_gc_cnt -
++	       c->lst.taken_empty_lebs;
++	if (unlikely(rsvd_idx_lebs > lebs)) {
++		dbg_budg("out of indexing space: min_idx_lebs %d (old %d), "
++			 "rsvd_idx_lebs %d", min_idx_lebs, c->min_idx_lebs,
++			 rsvd_idx_lebs);
++		return -ENOSPC;
++	}
++
++	available = ubifs_calc_available(c);
++	outstanding = c->budg_data_growth + c->budg_dd_growth;
++
++	if (unlikely(available < outstanding)) {
++		dbg_budg("out of data space: available %lld, outstanding %lld",
++			 available, outstanding);
++		return -ENOSPC;
++	}
++
++	if (!rp_can_write(c, available - outstanding))
++		return -ENOSPC;
++
++	c->min_idx_lebs = min_idx_lebs;
++	return 0;
++}
++
++/**
++ * calc_idx_growth - calculate approximate index growth from budgeting request.
++ * @c: UBIFS file-system description object
++ * @req: budgeting request
++ *
++ * For now we assume each new node adds one znode. But this is rather poor
++ * approximation, though.
++ */
++static int calc_idx_growth(const struct ubifs_info *c,
++			   const struct ubifs_budget_req *req)
++{
++	int znodes;
++
++	znodes = req->new_ino + (req->new_page << UBIFS_BLOCKS_PER_PAGE_SHIFT) +
++		 req->new_dent;
++	return znodes * c->max_idx_node_sz;
++}
++
++/**
++ * calc_data_growth - calculate approximate amount of new data from budgeting
++ * request.
++ * @c: UBIFS file-system description object
++ * @req: budgeting request
++ */
++static int calc_data_growth(const struct ubifs_info *c,
++			    const struct ubifs_budget_req *req)
++{
++	int data_growth;
++
++	data_growth = req->new_ino  ? c->inode_budget : 0;
++	if (req->new_page)
++		data_growth += c->page_budget;
++	if (req->new_dent)
++		data_growth += c->dent_budget;
++	data_growth += req->new_ino_d;
++
++	return data_growth;
++}
++
++/**
++ * calc_dd_growth - calculate approximate amount of data which makes other data
++ * dirty from budgeting request.
++ * @c: UBIFS file-system description object
++ * @req: budgeting request
++ */
++static int calc_dd_growth(const struct ubifs_info *c,
++			  const struct ubifs_budget_req *req)
++{
++	int dd_growth;
++
++	dd_growth = req->dirtied_page ? c->page_budget : 0;
++
++	if (req->dirtied_ino)
++		dd_growth += c->inode_budget << (req->dirtied_ino - 1);
++	if (req->mod_dent)
++		dd_growth += c->dent_budget;
++	dd_growth += req->dirtied_ino_d;
++
++	return dd_growth;
++}
++
++/**
++ * ubifs_budget_space - ensure there is enough space to complete an operation.
++ * @c: UBIFS file-system description object
++ * @req: budget request
++ *
++ * This function allocates budget for an operation. It uses pessimistic
++ * approximation of how much flash space the operation needs. The goal of this
++ * function is to make sure UBIFS always has flash space to flush all dirty
++ * pages, dirty inodes, and dirty znodes (liability). This function may force
++ * commit, garbage-collection or write-back. Returns zero in case of success,
++ * %-ENOSPC if there is no free space and other negative error codes in case of
++ * failures.
++ */
++int ubifs_budget_space(struct ubifs_info *c, struct ubifs_budget_req *req)
++{
++	int uninitialized_var(cmt_retries), uninitialized_var(wb_retries);
++	int err, idx_growth, data_growth, dd_growth;
++	struct retries_info ri;
++
++	data_growth = calc_data_growth(c, req);
++	dd_growth = calc_dd_growth(c, req);
++	if (!data_growth && !dd_growth)
++		return 0;
++	idx_growth = calc_idx_growth(c, req);
++	memset(&ri, 0, sizeof(struct retries_info));
++
++again:
++	spin_lock(&c->space_lock);
++	ubifs_assert(c->budg_idx_growth >= 0);
++	ubifs_assert(c->budg_data_growth >= 0);
++	ubifs_assert(c->budg_dd_growth >= 0);
++
++	c->budg_idx_growth += idx_growth;
++	c->budg_data_growth += data_growth;
++	c->budg_dd_growth += dd_growth;
++
++	err = do_budget_space(c);
++	if (unlikely(err)) {
++		/* Restore the old values */
++		c->budg_idx_growth -= idx_growth;
++		c->budg_data_growth -= data_growth;
++		c->budg_dd_growth -= dd_growth;
++		spin_unlock(&c->space_lock);
++
++		goto make_space;
++	}
++
++	req->idx_growth = idx_growth;
++	req->data_growth = data_growth;
++	req->dd_growth = dd_growth;
++	spin_unlock(&c->space_lock);
 +
 +	return 0;
++
++make_space:
++	err = make_free_space(c, &ri);
++	if (err == -EAGAIN) {
++		dbg_budg("try again");
++		cond_resched();
++		goto again;
++	} else if (err == -ENOSPC)
++		dbg_budg("FS is full, -ENOSPC");
++	else
++		ubifs_err("cannot budget space, error %d", err);
++
++	return err;
 +}
 +
-+static int atmel_bl_get_brightness(struct backlight_device *bl)
++/**
++ * ubifs_release_budget - release budgeted free space.
++ * @c: UBIFS file-system description object
++ * @req: budget request
++ *
++ * This function releases the space budgeted by 'ubifs_budget_space()'. Note,
++ * since the index changes (which were budgeted for in @req->idx_growth) will
++ * only be written to the media on commit, this function moves the index budget
++ * from @c->budg_idx_growth to @c->budg_uncommitted_idx. The latter will be
++ * zeroed by the commit operation.
++ */
++void ubifs_release_budget(struct ubifs_info *c, struct ubifs_budget_req *req)
 +{
-+	struct atmel_lcdfb_info *sinfo = bl_get_data(bl);
++	if (!req->data_growth && !req->dd_growth)
++		return;
 +
-+	return lcdc_readl(sinfo, ATMEL_LCDC_CONTRAST_VAL);
++	if (req->idx_growth == -1)
++		req->idx_growth = calc_idx_growth(c, req);
++
++	spin_lock(&c->space_lock);
++	c->budg_idx_growth -= req->idx_growth;
++	c->budg_uncommitted_idx += req->idx_growth;
++	c->budg_data_growth -= req->data_growth;
++	c->budg_dd_growth -= req->dd_growth;
++	c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
++
++	ubifs_assert(c->budg_idx_growth >= 0);
++	ubifs_assert(c->budg_data_growth >= 0);
++	ubifs_assert(c->min_idx_lebs < c->main_lebs);
++	spin_unlock(&c->space_lock);
++}
++
++/**
++ * ubifs_convert_page_budget - convert budget of a new page.
++ * @c: UBIFS file-system description object
++ *
++ * This function converts budget which was allocated for a new page of data to
++ * the budget of changing an existing page of data. The latter is not larger
++ * then the former, so this function only does simple re-calculation and does
++ * not involve any write-back.
++ */
++void ubifs_convert_page_budget(struct ubifs_info *c)
++{
++	spin_lock(&c->space_lock);
++	/* Release the index growth reservation */
++	c->budg_idx_growth -= c->max_idx_node_sz << UBIFS_BLOCKS_PER_PAGE_SHIFT;
++	/* Release the data growth reservation */
++	c->budg_data_growth -= c->page_budget;
++	/* Increase the dirty data growth reservation instead */
++	c->budg_dd_growth += c->page_budget;
++	/* And re-calculate the indexing space reservation */
++	c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
++	spin_unlock(&c->space_lock);
 +}
 +
-+static struct backlight_ops atmel_lcdc_bl_ops = {
-+	.update_status = atmel_bl_update_status,
-+	.get_brightness = atmel_bl_get_brightness,
++/**
++ * ubifs_budget_inode_op - budget an operation on inode.
++ * @c: UBIFS file-system description object
++ * @inode: VFS inode which will be made dirty by the operation
++ * @req: budget request of the operation
++ *
++ * This function is called to get budget for an operation which changes an
++ * inode. The inode may be in dirty or clean state. The former means there is
++ * no need to allocate the budget as it has already been allocated before. The
++ * latter means that the inode change budget has to be allocated.
++ *
++ * The caller has to pass the inode which is going to be changed. This function
++ * acquires budget the for as described in @req plus the budget for changing
++ * the inode dirty, if needed. Returns zero in case of success, %-ENOSPC if
++ * there is no more flash space, and other negative error codes in case of
++ * failure.
++ *
++ * Note, upon exit, this function leaves the inode locked, and the
++ * 'ubifs_release_ino_dirty()' or 'ubifs_release_ino_clean()' function has to
++ * be called to unlock it.
++ */
++int ubifs_budget_inode_op(struct ubifs_info *c, struct inode *inode,
++			      struct ubifs_budget_req *req)
++{
++	struct ubifs_inode *ui = ubifs_inode(inode);
++	int err, old = req->dirtied_ino;
++
++	ubifs_assert(req->dirtied_ino <= 3);
++	ubifs_assert(req->dirtied_ino_d <= UBIFS_MAX_INO_DATA * 3);
++
++again:
++	/*
++	 * If the inode is clean, it will be dirtied by this operation and we
++	 * have to budget for this.
++	 */
++	req->dirtied_ino += !ui->dirty;
++	if (req->dirtied_ino > old)
++		req->dirtied_ino_d += ui->data_len;
++
++	/*
++	 * Note, if the budget request does not actually request anything
++	 * (i.e., @req contains only zeroes), 'ubifs_budget_space()' will
++	 * return almost straight away.
++	 */
++	err = ubifs_budget_space(c, req);
++	if (unlikely(err))
++		return err;
++
++	mutex_lock(&ui->budg_mutex);
++
++	if (req->dirtied_ino != old + !ui->dirty) {
++		/* The inode has probably been written back meanwhile */
++		ubifs_release_budget(c, req);
++		mutex_unlock(&ui->budg_mutex);
++		req->dirtied_ino = old;
++		req->dirtied_ino_d -= ui->data_len;
++		goto again;
++	}
++
++	UBIFS_DBG(ui->budgeted = 1);
++	return 0;
++}
++
++/**
++ * ubifs_release_ino_dirty - release budget of a "dirtying" operation.
++ * @c: UBIFS file-system description object
++ * @inode: VFS inode the operation worked on
++ * @req: budget to release
++ *
++ * This function has to be called at the end of VFS operations which acquired
++ * budget via 'ubifs_budget_inode_op()'. It assumes that the inode has been
++ * marked as dirty and will be synchronized later by write-back, so it does not
++ * release the budget of the inode.
++ *
++ * Note, this function also avoids releasing page budgets which are released
++ * separately.
++ */
++void ubifs_release_ino_dirty(struct ubifs_info *c, struct inode *inode,
++				struct ubifs_budget_req *req)
++{
++	ubifs_assert(req->dirtied_ino <= 4);
++	ubifs_assert(req->dirtied_ino_d <= UBIFS_MAX_INO_DATA * 4);
++	ubifs_assert(req->idx_growth >= 0);
++	ubifs_assert(req->data_growth >= 0);
++	ubifs_assert(req->dd_growth >= 0);
++
++	if (req->dirtied_ino) {
++		req->dd_growth -= c->inode_budget;
++		req->dd_growth -= req->dirtied_ino_d;
++	}
++
++	if (req->dirtied_page) {
++		req->dd_growth -= c->page_budget;
++		ubifs_assert(req->new_page == 0);
++	} else if (req->new_page) {
++		req->idx_growth -=
++			c->max_idx_node_sz << UBIFS_BLOCKS_PER_PAGE_SHIFT;
++		req->data_growth -= c->page_budget;
++		ubifs_assert(req->dirtied_page == 0);
++	}
++
++	ubifs_assert(req->dd_growth >= 0);
++	ubifs_release_budget(c, req);
++	mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++}
++
++/**
++ * ubifs_cancel_ino_op - cancel budget of an operation on inode.
++ * @c: UBIFS file-system description object
++ * @inode: VFS inode the operation worked on
++ * @req: budget to release
++ *
++ * This function has to be called if the operation failed and whole budget has
++ * to be released, including the budget for inode which would had been
++ * dirtied. It is important not to mark the inode dirty before calling this
++ * function.
++ */
++void ubifs_cancel_ino_op(struct ubifs_info *c, struct inode *inode,
++			 struct ubifs_budget_req *req)
++{
++	ubifs_assert(req->dirtied_ino <= 4);
++	ubifs_assert(req->dirtied_ino_d <= UBIFS_MAX_INO_DATA * 4);
++	ubifs_assert(req->idx_growth >= 0);
++	ubifs_assert(req->data_growth >= 0);
++	ubifs_assert(req->dd_growth >= 0);
++
++	ubifs_release_budget(c, req);
++	mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++}
++
++/**
++ * ubifs_release_ino_clean - release budget of a "cleaning" operation.
++ * @c: UBIFS file-system description object
++ * @inode: VFS inode the operation worked on
++ * @req: budget to release
++ *
++ * This function has to be called at the end of VFS operations which acquired
++ * budget via 'ubifs_budget_inode_op()'. It assumed the operation synchronized
++ * the inode, so it marks the inode clean, unlocks it and releases whole budget.
++ *
++ * Note, this function also avoids releasing page budgets which are released
++ * separately.
++ */
++void ubifs_release_ino_clean(struct ubifs_info *c, struct inode *inode,
++			     struct ubifs_budget_req *req)
++{
++	struct ubifs_inode *ui = ubifs_inode(inode);
++
++	ubifs_assert(req->dirtied_ino <= 4);
++	ubifs_assert(req->dirtied_ino_d <= UBIFS_MAX_INO_DATA * 4);
++	ubifs_assert(req->idx_growth >= 0);
++	ubifs_assert(req->data_growth >= 0);
++	ubifs_assert(req->dd_growth >= 0);
++	ubifs_assert(!req->dirtied_page);
++	ubifs_assert(!req->new_page);
++	UBIFS_DBG(ui->budgeted = 0);
++
++	ubifs_release_budget(c, req);
++	if (ui->dirty) {
++		ui->dirty = 0;
++		/*
++		 * Note, VFS still treats the inode as dirty and
++		 * 'ubifs_write_inode()' will be called, but it'll do nothing
++		 * because @ui->dirty is %0.
++		 */
++		atomic_long_dec(&c->dirty_ino_cnt);
++	}
++	mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++}
++
++/**
++ * ubifs_release_new_page_budget - release budget of a new page.
++ * @c: UBIFS file-system description object
++ *
++ * This is a helper function which releases budget corresponding to the budget
++ * of one new page of data.
++ */
++void ubifs_release_new_page_budget(struct ubifs_info *c)
++{
++	struct ubifs_budget_req req = { .new_page = 1,
++					.idx_growth = -1,
++					.data_growth = c->page_budget };
++
++	ubifs_release_budget(c, &req);
++}
++
++/**
++ * ubifs_budg_get_free_space - return amount of free space.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns amount of free space on the file-system.
++ */
++long long ubifs_budg_get_free_space(struct ubifs_info *c)
++{
++	int min_idx_lebs, rsvd_idx_lebs;
++	long long available, outstanding, free;
++
++	/* Do exactly the same calculations as in 'do_budget_space()' */
++	spin_lock(&c->space_lock);
++	min_idx_lebs = ubifs_calc_min_idx_lebs(c);
++
++	if (min_idx_lebs > c->lst.idx_lebs)
++		rsvd_idx_lebs = min_idx_lebs - c->lst.idx_lebs;
++	else
++		rsvd_idx_lebs = 0;
++
++	if (rsvd_idx_lebs > c->lst.empty_lebs + c->freeable_cnt + c->idx_gc_cnt
++				- c->lst.taken_empty_lebs) {
++		spin_unlock(&c->space_lock);
++		return 0;
++	}
++
++	c->min_idx_lebs = min_idx_lebs;
++	available = ubifs_calc_available(c);
++	outstanding = c->budg_data_growth + c->budg_dd_growth;
++	spin_unlock(&c->space_lock);
++
++	if (available > outstanding)
++		free = ubifs_reported_space(c, available - outstanding);
++	else
++		free = 0;
++
++	return free;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/commit.c avr32-2.6/fs/ubifs/commit.c
+--- linux-2.6.25.6/fs/ubifs/commit.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/commit.c	2008-06-12 15:09:45.311815896 +0200
+@@ -0,0 +1,677 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements functions that manage the running of the commit process.
++ * Each affected module has its own functions to accomplish their part in the
++ * commit and those functions are called here.
++ *
++ * The commit is the process whereby all updates to the index and LEB properties
++ * are written out together and the journal becomes empty. This keeps the
++ * file system consistent - at all times the state can be recreated by reading
++ * the index and LEB properties and then replaying the journal.
++ *
++ * The commit is split into two parts named "commit start" and "commit end".
++ * During commit start, the commit process has exclusive access to the journal
++ * by holding the commit semaphore down for writing. As few I/O operations as
++ * possible are performed during commit start, instead the nodes that are to be
++ * written are merely identified. During commit end, the commit semaphore is no
++ * longer held and the journal is again in operation, allowing users to continue
++ * to use the file system while the bulk of the commit I/O is performed. The
++ * purpose of this two-step approach is to prevent the commit from causing any
++ * latency blips. Note that in any case, the commit does not prevent lookups
++ * (as permitted by the TNC mutex), or access to VFS data structures e.g. page
++ * cache.
++ */
++
++#include <linux/freezer.h>
++#include <linux/kthread.h>
++#include "ubifs.h"
++
++/**
++ * do_commit - commit the journal.
++ * @c: UBIFS file-system description object
++ *
++ * This function implements UBIFS commit. It has to be called with commit lock
++ * locked. Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int do_commit(struct ubifs_info *c)
++{
++	int err, new_ltail_lnum, old_ltail_lnum, i;
++	struct ubifs_zbranch zroot;
++	struct ubifs_lp_stats lst;
++
++	dbg_cmt("start");
++	if (c->ro_media) {
++		err = -EROFS;
++		goto out_up;
++	}
++
++	/* Sync all write buffers (necessary for recovery) */
++	for (i = 0; i < c->jhead_cnt; i++) {
++		err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++		if (err)
++			goto out_up;
++	}
++
++	err = ubifs_gc_start_commit(c);
++	if (err)
++		goto out_up;
++	err = dbg_check_lprops(c);
++	if (err)
++		goto out_up;
++	err = ubifs_log_start_commit(c, &new_ltail_lnum);
++	if (err)
++		goto out_up;
++	err = ubifs_tnc_start_commit(c, &zroot);
++	if (err)
++		goto out_up;
++	err = ubifs_lpt_start_commit(c);
++	if (err)
++		goto out_up;
++	err = ubifs_orphan_start_commit(c);
++	if (err)
++		goto out_up;
++
++	ubifs_get_lp_stats(c, &lst);
++
++	up_write(&c->commit_sem);
++
++	err = ubifs_tnc_end_commit(c);
++	if (err)
++		goto out;
++	err = ubifs_lpt_end_commit(c);
++	if (err)
++		goto out;
++	err = ubifs_orphan_end_commit(c);
++	if (err)
++		goto out;
++	old_ltail_lnum = c->ltail_lnum;
++	err = ubifs_log_end_commit(c, new_ltail_lnum);
++	if (err)
++		goto out;
++	err = dbg_check_old_index(c, &zroot);
++	if (err)
++		goto out;
++
++	mutex_lock(&c->mst_mutex);
++	c->mst_node->cmt_no      = cpu_to_le64(++c->cmt_no);
++	c->mst_node->log_lnum    = cpu_to_le32(new_ltail_lnum);
++	c->mst_node->root_lnum   = cpu_to_le32(zroot.lnum);
++	c->mst_node->root_offs   = cpu_to_le32(zroot.offs);
++	c->mst_node->root_len    = cpu_to_le32(zroot.len);
++	c->mst_node->ihead_lnum  = cpu_to_le32(c->ihead_lnum);
++	c->mst_node->ihead_offs  = cpu_to_le32(c->ihead_offs);
++	c->mst_node->index_size  = cpu_to_le64(c->old_idx_sz);
++	c->mst_node->lpt_lnum    = cpu_to_le32(c->lpt_lnum);
++	c->mst_node->lpt_offs    = cpu_to_le32(c->lpt_offs);
++	c->mst_node->nhead_lnum  = cpu_to_le32(c->nhead_lnum);
++	c->mst_node->nhead_offs  = cpu_to_le32(c->nhead_offs);
++	c->mst_node->ltab_lnum   = cpu_to_le32(c->ltab_lnum);
++	c->mst_node->ltab_offs   = cpu_to_le32(c->ltab_offs);
++	c->mst_node->lsave_lnum  = cpu_to_le32(c->lsave_lnum);
++	c->mst_node->lsave_offs  = cpu_to_le32(c->lsave_offs);
++	c->mst_node->lscan_lnum  = cpu_to_le32(c->lscan_lnum);
++	c->mst_node->empty_lebs  = cpu_to_le32(lst.empty_lebs);
++	c->mst_node->idx_lebs    = cpu_to_le32(lst.idx_lebs);
++	c->mst_node->total_free  = cpu_to_le64(lst.total_free);
++	c->mst_node->total_dirty = cpu_to_le64(lst.total_dirty);
++	c->mst_node->total_used  = cpu_to_le64(lst.total_used);
++	c->mst_node->total_dead  = cpu_to_le64(lst.total_dead);
++	c->mst_node->total_dark  = cpu_to_le64(lst.total_dark);
++	if (c->no_orphs)
++		c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS);
++	else
++		c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_NO_ORPHS);
++	err = ubifs_write_master(c);
++	mutex_unlock(&c->mst_mutex);
++	if (err)
++		goto out;
++
++	err = ubifs_log_post_commit(c, old_ltail_lnum);
++	if (err)
++		goto out;
++	err = ubifs_gc_end_commit(c);
++	if (err)
++		goto out;
++	err = ubifs_lpt_post_commit(c);
++	if (err)
++		goto out;
++
++	spin_lock(&c->cs_lock);
++	c->cmt_state = COMMIT_RESTING;
++	wake_up(&c->cmt_wq);
++	dbg_cmt("commit end");
++	spin_unlock(&c->cs_lock);
++
++	return 0;
++
++out_up:
++	up_write(&c->commit_sem);
++out:
++	ubifs_err("commit failed, error %d", err);
++	spin_lock(&c->cs_lock);
++	c->cmt_state = COMMIT_BROKEN;
++	wake_up(&c->cmt_wq);
++	spin_unlock(&c->cs_lock);
++	ubifs_ro_mode(c, err);
++	return err;
++}
++
++/**
++ * run_bg_commit - run background commit if it is needed.
++ * @c: UBIFS file-system description object
++ *
++ * This function runs background commit if it is needed. Returns zero in case
++ * of success and a negative error code in case of failure.
++ */
++static int run_bg_commit(struct ubifs_info *c)
++{
++	spin_lock(&c->cs_lock);
++	/*
++	 * Run background commit only if background commit was requested or if
++	 * commit is required.
++	 */
++	if (c->cmt_state != COMMIT_BACKGROUND &&
++	    c->cmt_state != COMMIT_REQUIRED)
++		goto out;
++	spin_unlock(&c->cs_lock);
++
++	down_write(&c->commit_sem);
++	spin_lock(&c->cs_lock);
++	if (c->cmt_state == COMMIT_REQUIRED)
++		c->cmt_state = COMMIT_RUNNING_REQUIRED;
++	else if (c->cmt_state == COMMIT_BACKGROUND)
++		c->cmt_state = COMMIT_RUNNING_BACKGROUND;
++	else
++		goto out_cmt_unlock;
++	spin_unlock(&c->cs_lock);
++
++	return do_commit(c);
++
++out_cmt_unlock:
++	up_write(&c->commit_sem);
++out:
++	spin_unlock(&c->cs_lock);
++	return 0;
++}
++
++/**
++ * ubifs_bg_thread - UBIFS background thread function.
++ * @info: points to the file-system description object
++ *
++ * This function implements various file-system background activities:
++ * o when a write-buffer timer expires it synchronizes the appropriate
++ *   write-buffer;
++ * o when the journal is about to be full, it starts in-advance commit.
++ *
++ * Note, other stuff like background garbage collection may be added here in
++ * future.
++ */
++int ubifs_bg_thread(void *info)
++{
++	int err;
++	struct ubifs_info *c = info;
++
++	ubifs_msg("background thread \"%s\" started, PID %d",
++		  c->bgt_name, current->pid);
++	set_freezable();
++
++	while (1) {
++		if (kthread_should_stop())
++			break;
++
++		if (try_to_freeze())
++			continue;
++
++		set_current_state(TASK_INTERRUPTIBLE);
++		/* Check if there is something to do */
++		if (!c->need_bgt) {
++			/*
++			 * Nothing prevents us from going sleep now and
++			 * be never woken up and block the task which
++			 * could wait in 'kthread_stop()' forever.
++			 */
++			if (kthread_should_stop())
++				break;
++			schedule();
++			continue;
++		} else
++			__set_current_state(TASK_RUNNING);
++
++		c->need_bgt = 0;
++		err = ubifs_bg_wbufs_sync(c);
++		if (err)
++			ubifs_ro_mode(c, err);
++
++		run_bg_commit(c);
++		cond_resched();
++	}
++
++	dbg_msg("background thread \"%s\" stops", c->bgt_name);
++	return 0;
++}
++
++/**
++ * ubifs_commit_required - set commit state to "required".
++ * @c: UBIFS file-system description object
++ *
++ * This function is called if a commit is required but cannot be done from the
++ * calling function, so it is just flagged instead.
++ */
++void ubifs_commit_required(struct ubifs_info *c)
++{
++	spin_lock(&c->cs_lock);
++	switch (c->cmt_state) {
++	case COMMIT_RESTING:
++	case COMMIT_BACKGROUND:
++		dbg_cmt("old: %s, new: %s", dbg_cstate(c->cmt_state),
++			dbg_cstate(COMMIT_REQUIRED));
++		c->cmt_state = COMMIT_REQUIRED;
++		break;
++	case COMMIT_RUNNING_BACKGROUND:
++		dbg_cmt("old: %s, new: %s", dbg_cstate(c->cmt_state),
++			dbg_cstate(COMMIT_RUNNING_REQUIRED));
++		c->cmt_state = COMMIT_RUNNING_REQUIRED;
++		break;
++	case COMMIT_REQUIRED:
++	case COMMIT_RUNNING_REQUIRED:
++	case COMMIT_BROKEN:
++		break;
++	}
++	spin_unlock(&c->cs_lock);
++}
++
++/**
++ * ubifs_request_bg_commit - notify the background thread to do a commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function is called if the journal is full enough to make a commit
++ * worthwhile, so background thread is kicked to start it.
++ */
++void ubifs_request_bg_commit(struct ubifs_info *c)
++{
++	spin_lock(&c->cs_lock);
++	if (c->cmt_state == COMMIT_RESTING) {
++		dbg_cmt("old: %s, new: %s", dbg_cstate(c->cmt_state),
++			dbg_cstate(COMMIT_BACKGROUND));
++		c->cmt_state = COMMIT_BACKGROUND;
++		spin_unlock(&c->cs_lock);
++		ubifs_wake_up_bgt(c);
++	} else
++		spin_unlock(&c->cs_lock);
++}
++
++/**
++ * wait_for_commit - wait for commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function sleeps until the commit operation is no longer running.
++ */
++static int wait_for_commit(struct ubifs_info *c)
++{
++	dbg_cmt("pid %d goes sleep", current->pid);
++
++	/*
++	 * The following sleeps if the condition is false, and will be woken
++	 * when the commit ends. It is possible, although very unlikely, that we
++	 * will wake up and see the subsequent commit running, rather than the
++	 * one we were waiting for, and go back to sleep.  However, we will be
++	 * woken again, so there is no danger of sleeping forever.
++	 */
++	wait_event(c->cmt_wq, c->cmt_state != COMMIT_RUNNING_BACKGROUND &&
++			      c->cmt_state != COMMIT_RUNNING_REQUIRED);
++	dbg_cmt("commit finished, pid %d woke up", current->pid);
++	return 0;
++}
++
++/**
++ * ubifs_run_commit - run or wait for commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function runs commit and returns zero in case of success and a negative
++ * error code in case of failure.
++ */
++int ubifs_run_commit(struct ubifs_info *c)
++{
++	int err = 0;
++
++	spin_lock(&c->cs_lock);
++	if (c->cmt_state == COMMIT_BROKEN) {
++		err = -EINVAL;
++		goto out;
++	}
++
++	if (c->cmt_state == COMMIT_RUNNING_BACKGROUND)
++		/*
++		 * We set the commit state to 'running required' to indicate
++		 * that we want it to complete as quickly as possible.
++		 */
++		c->cmt_state = COMMIT_RUNNING_REQUIRED;
++
++	if (c->cmt_state == COMMIT_RUNNING_REQUIRED) {
++		spin_unlock(&c->cs_lock);
++		return wait_for_commit(c);
++	}
++	spin_unlock(&c->cs_lock);
++
++	/* Ok, the commit is indeed needed */
++
++	down_write(&c->commit_sem);
++	spin_lock(&c->cs_lock);
++	/*
++	 * Since we unlocked 'c->cs_lock', the state may have changed, so
++	 * re-check it.
++	 */
++	if (c->cmt_state == COMMIT_BROKEN) {
++		err = -EINVAL;
++		goto out_cmt_unlock;
++	}
++
++	if (c->cmt_state == COMMIT_RUNNING_BACKGROUND)
++		c->cmt_state = COMMIT_RUNNING_REQUIRED;
++
++	if (c->cmt_state == COMMIT_RUNNING_REQUIRED) {
++		up_write(&c->commit_sem);
++		spin_unlock(&c->cs_lock);
++		return wait_for_commit(c);
++	}
++	c->cmt_state = COMMIT_RUNNING_REQUIRED;
++	spin_unlock(&c->cs_lock);
++
++	err = do_commit(c);
++	return err;
++
++out_cmt_unlock:
++	up_write(&c->commit_sem);
++out:
++	spin_unlock(&c->cs_lock);
++	return err;
++}
++
++/**
++ * ubifs_gc_should_commit - determine if it is time for GC to run commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function is called by garbage collection to determine if commit should
++ * be run. If commit state is @COMMIT_BACKGROUND, which means that the journal
++ * is full enough to start commit, this function returns true. It is not
++ * absolutely necessary to commit yet, but it feels like this should be better
++ * then to keep doing GC. This function returns %1 if GC has to initiate commit
++ * and %0 if not.
++ */
++int ubifs_gc_should_commit(struct ubifs_info *c)
++{
++	int ret = 0;
++
++	spin_lock(&c->cs_lock);
++	if (c->cmt_state == COMMIT_BACKGROUND) {
++		dbg_cmt("commit required now");
++		c->cmt_state = COMMIT_REQUIRED;
++	} else
++		dbg_cmt("commit not requested");
++	if (c->cmt_state == COMMIT_REQUIRED)
++		ret = 1;
++	spin_unlock(&c->cs_lock);
++	return ret;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * struct idx_node - hold index nodes during index tree traversal.
++ * @list: list
++ * @iip: index in parent (slot number of this indexing node in the parent
++ *       indexing node)
++ * @upper_key: all keys in this indexing node have to be less or equivalent to
++ *             this key
++ * @idx: index node (8-byte aligned because all node structures must be 8-byte
++ *       aligned)
++ */
++struct idx_node {
++	struct list_head list;
++	int iip;
++	union ubifs_key upper_key;
++	struct ubifs_idx_node idx __attribute__((aligned(8)));
++};
++
++/**
++ * dbg_old_index_check_init - get information for the next old index check.
++ * @c: UBIFS file-system description object
++ * @zroot: root of the index
++ *
++ * This function records information about the index that will be needed for the
++ * next old index check i.e. 'dbg_check_old_index()'.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot)
++{
++	struct ubifs_idx_node *idx;
++	int lnum, offs, len, err = 0;
++
++	c->old_zroot = *zroot;
++
++	lnum = c->old_zroot.lnum;
++	offs = c->old_zroot.offs;
++	len = c->old_zroot.len;
++
++	idx = kmalloc(c->max_idx_node_sz, GFP_NOFS);
++	if (!idx)
++		return -ENOMEM;
++
++	err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs);
++	if (err)
++		goto out;
++
++	c->old_zroot_level = le16_to_cpu(idx->level);
++	c->old_zroot_sqnum = le64_to_cpu(idx->ch.sqnum);
++out:
++	kfree(idx);
++	return err;
++}
++
++/**
++ * dbg_check_old_index - check the old copy of the index.
++ * @c: UBIFS file-system description object
++ * @zroot: root of the new index
++ *
++ * In order to be able to recover from an unclean unmount, a complete copy of
++ * the index must exist on flash. This is the "old" index. The commit process
++ * must write the "new" index to flash without overwriting or destroying any
++ * part of the old index. This function is run at commit end in order to check
++ * that the old index does indeed exist completely intact.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
++{
++	int lnum, offs, len, err = 0, uninitialized_var(last_level), child_cnt;
++	int first = 1, iip;
++	union ubifs_key lower_key, upper_key, l_key, u_key;
++	unsigned long long uninitialized_var(last_sqnum);
++	struct ubifs_idx_node *idx;
++	struct list_head list;
++	struct idx_node *i;
++	size_t sz;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_OLD_IDX))
++		goto out;
++
++	INIT_LIST_HEAD(&list);
++
++	sz = sizeof(struct idx_node) + ubifs_idx_node_sz(c, c->fanout) -
++	     UBIFS_IDX_NODE_SZ;
++
++	/* Start at the old zroot */
++	lnum = c->old_zroot.lnum;
++	offs = c->old_zroot.offs;
++	len = c->old_zroot.len;
++	iip = 0;
++
++	/*
++	 * Traverse the index tree preorder depth-first i.e. do a node and then
++	 * its subtrees from left to right.
++	 */
++	while (1) {
++		struct ubifs_branch *br;
++
++		/* Get the next index node */
++		i = kmalloc(sz, GFP_NOFS);
++		if (!i) {
++			err = -ENOMEM;
++			goto out_free;
++		}
++		i->iip = iip;
++		/* Keep the index nodes on our path in a linked list */
++		list_add_tail(&i->list, &list);
++		/* Read the index node */
++		idx = &i->idx;
++		err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs);
++		if (err)
++			goto out_free;
++		/* Validate index node */
++		child_cnt = le16_to_cpu(idx->child_cnt);
++		if (child_cnt < 1 || child_cnt > c->fanout) {
++			err = 1;
++			goto out_dump;
++		}
++		if (first) {
++			first = 0;
++			/* Check root level and sqnum */
++			if (le16_to_cpu(idx->level) != c->old_zroot_level) {
++				err = 2;
++				goto out_dump;
++			}
++			if (le64_to_cpu(idx->ch.sqnum) != c->old_zroot_sqnum) {
++				err = 3;
++				goto out_dump;
++			}
++			/* Set last values as though root had a parent */
++			last_level = le16_to_cpu(idx->level) + 1;
++			last_sqnum = le64_to_cpu(idx->ch.sqnum) + 1;
++			key_read(c, ubifs_idx_key(c, idx), &lower_key);
++			highest_ino_key(c, &upper_key, INUM_WATERMARK);
++		}
++		key_copy(c, &upper_key, &i->upper_key);
++		if (le16_to_cpu(idx->level) != last_level - 1) {
++			err = 3;
++			goto out_dump;
++		}
++		/*
++		 * The index is always written bottom up hence a child's sqnum
++		 * is always less than the parents.
++		 */
++		if (le64_to_cpu(idx->ch.sqnum) >= last_sqnum) {
++			err = 4;
++			goto out_dump;
++		}
++		/* Check key range */
++		key_read(c, ubifs_idx_key(c, idx), &l_key);
++		br = ubifs_idx_branch(c, idx, child_cnt - 1);
++		key_read(c, &br->key, &u_key);
++		if (keys_cmp(c, &lower_key, &l_key) > 0) {
++			err = 5;
++			goto out_dump;
++		}
++		if (keys_cmp(c, &upper_key, &u_key) < 0) {
++			err = 6;
++			goto out_dump;
++		}
++		if (keys_cmp(c, &upper_key, &u_key) == 0)
++			if (!is_hash_key(c, &u_key)) {
++				err = 7;
++				goto out_dump;
++			}
++		/* Go to next index node */
++		if (le16_to_cpu(idx->level) == 0) {
++			/* At the bottom, so go up until can go right */
++			while (1) {
++				/* Drop the bottom of the list */
++				list_del(&i->list);
++				kfree(i);
++				/* No more list means we are done */
++				if (list_empty(&list))
++					goto out;
++				/* Look at the new bottom */
++				i = list_entry(list.prev, struct idx_node,
++					       list);
++				idx = &i->idx;
++				/* Can we go right */
++				if (iip + 1 < le16_to_cpu(idx->child_cnt)) {
++					iip = iip + 1;
++					break;
++				} else
++					/* Nope, so go up again */
++					iip = i->iip;
++			}
++		} else
++			/* Go down left */
++			iip = 0;
++		/*
++		 * We have the parent in 'idx' and now we set up for reading the
++		 * child pointed to by slot 'iip'.
++		 */
++		last_level = le16_to_cpu(idx->level);
++		last_sqnum = le64_to_cpu(idx->ch.sqnum);
++		br = ubifs_idx_branch(c, idx, iip);
++		lnum = le32_to_cpu(br->lnum);
++		offs = le32_to_cpu(br->offs);
++		len = le32_to_cpu(br->len);
++		key_read(c, &br->key, &lower_key);
++		if (iip + 1 < le16_to_cpu(idx->child_cnt)) {
++			br = ubifs_idx_branch(c, idx, iip + 1);
++			key_read(c, &br->key, &upper_key);
++		} else
++			key_copy(c, &i->upper_key, &upper_key);
++	}
++out:
++	err = dbg_old_index_check_init(c, zroot);
++	if (err)
++		goto out_free;
++
++	return 0;
++
++out_dump:
++	dbg_err("dumping index node (iip=%d)", i->iip);
++	dbg_dump_node(c, idx);
++	list_del(&i->list);
++	kfree(i);
++	if (!list_empty(&list)) {
++		i = list_entry(list.prev, struct idx_node, list);
++		dbg_err("dumping parent index node");
++		dbg_dump_node(c, &i->idx);
++	}
++out_free:
++	while (!list_empty(&list)) {
++		i = list_entry(list.next, struct idx_node, list);
++		list_del(&i->list);
++		kfree(i);
++	}
++	ubifs_err("failed, error %d", err);
++	if (err > 0)
++		err = -EINVAL;
++	return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/compress.c avr32-2.6/fs/ubifs/compress.c
+--- linux-2.6.25.6/fs/ubifs/compress.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/compress.c	2008-06-12 15:09:45.315815846 +0200
+@@ -0,0 +1,253 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ * Copyright (C) 2006, 2007 University of Szeged, Hungary
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ *          Zoltan Sogor
++ */
++
++/*
++ * This file provides a single place to access to compression and
++ * decompression.
++ */
++
++#include <linux/crypto.h>
++#include "ubifs.h"
++
++/* Fake description object for the "none" compressor */
++static struct ubifs_compressor none_compr = {
++	.compr_type = UBIFS_COMPR_NONE,
++	.name = "no compression",
++	.capi_name = "",
++};
++
++#ifdef CONFIG_UBIFS_FS_LZO
++static DEFINE_MUTEX(lzo_mutex);
++
++static struct ubifs_compressor lzo_compr = {
++	.compr_type = UBIFS_COMPR_LZO,
++	.comp_mutex = &lzo_mutex,
++	.name = "LZO",
++	.capi_name = "lzo",
++};
++#else
++static struct ubifs_compressor lzo_compr = {
++	.compr_type = UBIFS_COMPR_LZO,
++	.name = "LZO",
++};
++#endif
++
++#ifdef CONFIG_UBIFS_FS_ZLIB
++static DEFINE_MUTEX(deflate_mutex);
++static DEFINE_MUTEX(inflate_mutex);
++
++static struct ubifs_compressor zlib_compr = {
++	.compr_type = UBIFS_COMPR_ZLIB,
++	.comp_mutex = &deflate_mutex,
++	.decomp_mutex = &inflate_mutex,
++	.name = "zlib",
++	.capi_name = "deflate",
 +};
++#else
++static struct ubifs_compressor zlib_compr = {
++	.compr_type = UBIFS_COMPR_ZLIB,
++	.name = "zlib",
++};
++#endif
++
++/* All UBIFS compressors */
++struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT];
++
++/**
++ * ubifs_compress - compress data.
++ * @in_buf: data to compress
++ * @in_len: length of the data to compress
++ * @out_buf: output buffer where compressed data should be stored
++ * @out_len: output buffer length is returned here
++ * @compr_type: type of compression to use on enter, actually used compression
++ *              type on exit
++ *
++ * This function compresses input buffer @in_buf of length @in_len and stores
++ * the result in the output buffer @out_buf and the resulting length in
++ * @out_len. If the input buffer does not compress, it is just copied to the
++ * @out_buf. The same happens if @compr_type is %UBIFS_COMPR_NONE or if
++ * compression error occurred.
++ *
++ * Note, if the input buffer was not compressed, it is copied to the output
++ * buffer and %UBIFS_COMPR_NONE is returned in @compr_type.
++ *
++ * This functions returns %0 on success or a negative error code on failure.
++ */
++void ubifs_compress(const void *in_buf, int in_len, void *out_buf, int *out_len,
++		    int *compr_type)
++{
++	int err;
++	struct ubifs_compressor *compr = ubifs_compressors[*compr_type];
++
++	if (*compr_type == UBIFS_COMPR_NONE)
++		goto no_compr;
++
++	/* If the input data is small, do not even try to compress it */
++	if (in_len < UBIFS_MIN_COMPR_LEN)
++		goto no_compr;
++
++	if (compr->comp_mutex)
++		mutex_lock(compr->comp_mutex);
++	err = crypto_comp_compress(compr->cc, in_buf, in_len, out_buf,
++				   out_len);
++	if (compr->comp_mutex)
++		mutex_unlock(compr->comp_mutex);
++	if (unlikely(err)) {
++		ubifs_warn("cannot compress %d bytes, compressor %s, "
++			   "error %d, leave data uncompressed",
++			   in_len, compr->name, err);
++		 goto no_compr;
++	}
++
++	/*
++	 * Presently, we just require that compression results in less data,
++	 * rather than any defined minimum compression ratio or amount.
++	 */
++	if (ALIGN(*out_len, 8) >= ALIGN(in_len, 8))
++		goto no_compr;
++
++	return;
++
++no_compr:
++	memcpy(out_buf, in_buf, in_len);
++	*out_len = in_len;
++	*compr_type = UBIFS_COMPR_NONE;
++}
++
++/**
++ * ubifs_decompress - decompress data.
++ * @in_buf: data to decompress
++ * @in_len: length of the data to decompress
++ * @out_buf: output buffer where decompressed data should
++ * @out_len: output length is returned here
++ * @compr_type: type of compression
++ *
++ * This function decompresses data from buffer @in_buf into buffer @out_buf.
++ * The length of the uncompressed data is returned in @out_len. This functions
++ * returns %0 on success or a negative error code on failure.
++ */
++int ubifs_decompress(const void *in_buf, int in_len, void *out_buf,
++		     int *out_len, int compr_type)
++{
++	int err;
++	struct ubifs_compressor *compr;
++
++	if (unlikely(compr_type < 0 || compr_type >= UBIFS_COMPR_TYPES_CNT)) {
++		ubifs_err("invalid compression type %d", compr_type);
++		return -EINVAL;
++	}
++
++	compr = ubifs_compressors[compr_type];
++
++	if (unlikely(!compr->capi_name)) {
++		ubifs_err("%s compression is not compiled in", compr->name);
++		return -EINVAL;
++	}
++
++	if (compr_type == UBIFS_COMPR_NONE) {
++		memcpy(out_buf, in_buf, in_len);
++		*out_len = in_len;
++		return 0;
++	}
++
++	if (compr->decomp_mutex)
++		mutex_lock(compr->decomp_mutex);
++	err = crypto_comp_decompress(compr->cc, in_buf, in_len, out_buf,
++				     out_len);
++	if (compr->decomp_mutex)
++		mutex_unlock(compr->decomp_mutex);
++	if (err)
++		ubifs_err("cannot decompress %d bytes, compressor %s, "
++			  "error %d", in_len, compr->name, err);
++
++	return err;
++}
++
++/**
++ * compr_init - initialize a compressor.
++ * @compr: compressor description object
++ *
++ * This function initializes the requested compressor and returns zero in case
++ * of success or a negative error code in case of failure.
++ */
++static int __init compr_init(struct ubifs_compressor *compr)
++{
++	if (compr->capi_name) {
++		compr->cc = crypto_alloc_comp(compr->capi_name, 0, 0);
++		if (IS_ERR(compr->cc)) {
++			ubifs_err("cannot initialize compressor %s, error %ld",
++				  compr->name, PTR_ERR(compr->cc));
++			return PTR_ERR(compr->cc);
++		}
++	}
++
++	ubifs_compressors[compr->compr_type] = compr;
++	return 0;
++}
++
++/**
++ * compr_exit - de-initialize a compressor.
++ * @compr: compressor description object
++ */
++static void compr_exit(struct ubifs_compressor *compr)
++{
++	if (compr->capi_name)
++		crypto_free_comp(compr->cc);
++	return;
++}
++
++/**
++ * ubifs_compressors_init - initialize UBIFS compressors.
++ *
++ * This function initializes the compressor which were compiled in. Returns
++ * zero in case of success and a negative error code in case of failure.
++ */
++int __init ubifs_compressors_init(void)
++{
++	int err;
++
++	err = compr_init(&lzo_compr);
++	if (err)
++		return err;
++
++	err = compr_init(&zlib_compr);
++	if (err)
++		goto out_lzo;
++
++	ubifs_compressors[UBIFS_COMPR_NONE] = &none_compr;
++	return 0;
++
++out_lzo:
++	compr_exit(&lzo_compr);
++	return err;
++}
++
++/**
++ * ubifs_compressors_exit - de-initialize UBIFS compressors.
++ */
++void __exit ubifs_compressors_exit(void)
++{
++	compr_exit(&lzo_compr);
++	compr_exit(&zlib_compr);
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/debug.c avr32-2.6/fs/ubifs/debug.c
+--- linux-2.6.25.6/fs/ubifs/debug.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/debug.c	2008-06-12 15:09:45.315815846 +0200
+@@ -0,0 +1,2210 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file implements most of the debugging stuff which is compiled in only
++ * when it is enabled. But some debugging check functions are implemented in
++ * corresponding subsystem, just because they are closely related and utilize
++ * various local functions of those subsystems.
++ */
++
++#define UBIFS_DBG_PRESERVE_UBI
++
++#include "ubifs.h"
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++DEFINE_SPINLOCK(dbg_lock);
++
++static char dbg_key_buf0[128];
++static char dbg_key_buf1[128];
 +
-+static void init_backlight(struct atmel_lcdfb_info *sinfo)
++unsigned int ubifs_msg_flags = UBIFS_MSG_FLAGS_DEFAULT;
++unsigned int ubifs_chk_flags = UBIFS_CHK_FLAGS_DEFAULT;
++unsigned int ubifs_tst_flags;
++
++module_param_named(debug_msgs, ubifs_msg_flags, uint, S_IRUGO | S_IWUSR);
++module_param_named(debug_chks, ubifs_chk_flags, uint, S_IRUGO | S_IWUSR);
++module_param_named(debug_tsts, ubifs_tst_flags, uint, S_IRUGO | S_IWUSR);
++
++MODULE_PARM_DESC(debug_msgs, "Debug message type flags");
++MODULE_PARM_DESC(debug_chks, "Debug check flags");
++MODULE_PARM_DESC(debug_tsts, "Debug special test flags");
++
++static const char *get_key_fmt(int fmt)
++{
++	switch (fmt) {
++	case UBIFS_SIMPLE_KEY_FMT:
++		return "simple";
++	default:
++		return "unknown/invalid format";
++	}
++}
++
++static const char *get_key_hash(int hash)
++{
++	switch (hash) {
++	case UBIFS_KEY_HASH_R5:
++		return "R5";
++	case UBIFS_KEY_HASH_TEST:
++		return "test";
++	default:
++		return "unknown/invalid name hash";
++	}
++}
++
++static const char *get_key_type(int type)
++{
++	switch (type) {
++	case UBIFS_INO_KEY:
++		return "inode";
++	case UBIFS_DENT_KEY:
++		return "direntry";
++	case UBIFS_XENT_KEY:
++		return "xentry";
++	case UBIFS_DATA_KEY:
++		return "data";
++	case UBIFS_TRUN_KEY:
++		return "truncate";
++	default:
++		return "unknown/invalid key";
++	}
++}
++
++static void sprintf_key(const struct ubifs_info *c, const union ubifs_key *key,
++			char *buffer)
++{
++	char *p = buffer;
++	int type = key_type(c, key);
++
++	if (c->key_fmt == UBIFS_SIMPLE_KEY_FMT) {
++		switch (type) {
++		case UBIFS_INO_KEY:
++			sprintf(p, "(%lu, %s)", key_inum(c, key),
++			       get_key_type(type));
++			break;
++		case UBIFS_DENT_KEY:
++		case UBIFS_XENT_KEY:
++			sprintf(p, "(%lu, %s, %#08x)", key_inum(c, key),
++				get_key_type(type), key_hash(c, key));
++			break;
++		case UBIFS_DATA_KEY:
++			sprintf(p, "(%lu, %s, %u)", key_inum(c, key),
++				get_key_type(type), key_block(c, key));
++			break;
++		case UBIFS_TRUN_KEY:
++			sprintf(p, "(%lu, %s)",
++				key_inum(c, key), get_key_type(type));
++			break;
++		default:
++			sprintf(p, "(bad key type: %#08x, %#08x)",
++				key->u32[0], key->u32[1]);
++		}
++	} else
++		sprintf(p, "bad key format %d", c->key_fmt);
++}
++
++const char *dbg_key_str0(const struct ubifs_info *c, const union ubifs_key *key)
++{
++	/* dbg_lock must be held */
++	sprintf_key(c, key, dbg_key_buf0);
++	return dbg_key_buf0;
++}
++
++const char *dbg_key_str1(const struct ubifs_info *c, const union ubifs_key *key)
++{
++	/* dbg_lock must be held */
++	sprintf_key(c, key, dbg_key_buf1);
++	return dbg_key_buf1;
++}
++
++const char *dbg_ntype(int type)
++{
++	switch (type) {
++	case UBIFS_PAD_NODE:
++		return "padding node";
++	case UBIFS_SB_NODE:
++		return "superblock node";
++	case UBIFS_MST_NODE:
++		return "master node";
++	case UBIFS_REF_NODE:
++		return "reference node";
++	case UBIFS_INO_NODE:
++		return "inode node";
++	case UBIFS_DENT_NODE:
++		return "direntry node";
++	case UBIFS_XENT_NODE:
++		return "xentry node";
++	case UBIFS_DATA_NODE:
++		return "data node";
++	case UBIFS_TRUN_NODE:
++		return "truncate node";
++	case UBIFS_IDX_NODE:
++		return "indexing node";
++	case UBIFS_CS_NODE:
++		return "commit start node";
++	case UBIFS_ORPH_NODE:
++		return "orphan node";
++	default:
++		return "unknown node";
++	}
++}
++
++static const char *dbg_gtype(int type)
 +{
-+	struct backlight_device	*bl;
++	switch (type) {
++	case UBIFS_NO_NODE_GROUP:
++		return "no node group";
++	case UBIFS_IN_NODE_GROUP:
++		return "in node group";
++	case UBIFS_LAST_OF_NODE_GROUP:
++		return "last of node group";
++	default:
++		return "unknown";
++	}
++}
++
++const char *dbg_cstate(int cmt_state)
++{
++	switch (cmt_state) {
++	case COMMIT_RESTING:
++		return "commit resting";
++	case COMMIT_BACKGROUND:
++		return "background commit requested";
++	case COMMIT_REQUIRED:
++		return "commit required";
++	case COMMIT_RUNNING_BACKGROUND:
++		return "BACKGROUND commit running";
++	case COMMIT_RUNNING_REQUIRED:
++		return "commit running and required";
++	case COMMIT_BROKEN:
++		return "broken commit";
++	default:
++		return "unknown commit state";
++	}
++}
 +
-+	sinfo->bl_power = FB_BLANK_UNBLANK;
++static void dump_ch(const struct ubifs_ch *ch)
++{
++	printk(KERN_DEBUG "\tmagic          %#x\n", le32_to_cpu(ch->magic));
++	printk(KERN_DEBUG "\tcrc            %#x\n", le32_to_cpu(ch->crc));
++	printk(KERN_DEBUG "\tnode_type      %d (%s)\n", ch->node_type,
++	       dbg_ntype(ch->node_type));
++	printk(KERN_DEBUG "\tgroup_type     %d (%s)\n", ch->group_type,
++	       dbg_gtype(ch->group_type));
++	printk(KERN_DEBUG "\tsqnum          %llu\n",
++	       (unsigned long long)le64_to_cpu(ch->sqnum));
++	printk(KERN_DEBUG "\tlen            %u\n", le32_to_cpu(ch->len));
++}
++
++void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode)
++{
++	const struct ubifs_inode *ui = ubifs_inode(inode);
++
++	printk(KERN_DEBUG "inode      %lu\n", inode->i_ino);
++	printk(KERN_DEBUG "size       %llu\n",
++	       (unsigned long long)i_size_read(inode));
++	printk(KERN_DEBUG "nlink      %u\n", inode->i_nlink);
++	printk(KERN_DEBUG "uid        %u\n", (unsigned int)inode->i_uid);
++	printk(KERN_DEBUG "gid        %u\n", (unsigned int)inode->i_gid);
++	printk(KERN_DEBUG "atime      %u.%u\n",
++	       (unsigned int)inode->i_atime.tv_sec,
++	       (unsigned int)inode->i_atime.tv_nsec);
++	printk(KERN_DEBUG "mtime      %u.%u\n",
++	       (unsigned int)inode->i_mtime.tv_sec,
++	       (unsigned int)inode->i_mtime.tv_nsec);
++	printk(KERN_DEBUG "ctime       %u.%u\n",
++	       (unsigned int)inode->i_ctime.tv_sec,
++	       (unsigned int)inode->i_ctime.tv_nsec);
++	printk(KERN_DEBUG "creat_sqnum %llu\n", ui->creat_sqnum);
++	printk(KERN_DEBUG "xattr_size  %lld\n", ui->xattr_size);
++	printk(KERN_DEBUG "xattr_cnt   %d\n", ui->xattr_cnt);
++	printk(KERN_DEBUG "xattr_names %d\n", ui->xattr_names);
++	printk(KERN_DEBUG "dirty       %u\n", ui->dirty);
++	printk(KERN_DEBUG "xattr       %u\n", ui->xattr);
++	printk(KERN_DEBUG "flags       %d\n", ui->flags);
++	printk(KERN_DEBUG "compr_type  %d\n", ui->compr_type);
++	printk(KERN_DEBUG "data_len    %d\n", ui->data_len);
++}
++
++void dbg_dump_node(const struct ubifs_info *c, const void *node)
++{
++	int i, n;
++	union ubifs_key key;
++	const struct ubifs_ch *ch = node;
++
++	if (dbg_failure_mode)
++		return;
 +
-+	if (sinfo->backlight)
++	/* If the magic is incorrect, just hexdump the first bytes */
++	if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC) {
++		printk(KERN_DEBUG "Not a node, first %zu bytes:", UBIFS_CH_SZ);
++		print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
++			       (void *)node, UBIFS_CH_SZ, 1);
 +		return;
++	}
++
++	spin_lock(&dbg_lock);
++	dump_ch(node);
++
++	switch (ch->node_type) {
++	case UBIFS_PAD_NODE:
++	{
++		const struct ubifs_pad_node *pad = node;
++
++		printk(KERN_DEBUG "\tpad_len        %u\n",
++		       le32_to_cpu(pad->pad_len));
++		break;
++	}
++	case UBIFS_SB_NODE:
++	{
++		const struct ubifs_sb_node *sup = node;
++		unsigned int sup_flags = le32_to_cpu(sup->flags);
++
++		printk(KERN_DEBUG "\tkey_hash       %d (%s)\n",
++		       (int)sup->key_hash, get_key_hash(sup->key_hash));
++		printk(KERN_DEBUG "\tkey_fmt        %d (%s)\n",
++		       (int)sup->key_fmt, get_key_fmt(sup->key_fmt));
++		printk(KERN_DEBUG "\tflags          %#x\n", sup_flags);
++		printk(KERN_DEBUG "\t  big_lpt      %u\n",
++		       !!(sup_flags & UBIFS_FLG_BIGLPT));
++		printk(KERN_DEBUG "\tmin_io_size    %u\n",
++		       le32_to_cpu(sup->min_io_size));
++		printk(KERN_DEBUG "\tleb_size       %u\n",
++		       le32_to_cpu(sup->leb_size));
++		printk(KERN_DEBUG "\tleb_cnt        %u\n",
++		       le32_to_cpu(sup->leb_cnt));
++		printk(KERN_DEBUG "\tmax_leb_cnt    %u\n",
++		       le32_to_cpu(sup->max_leb_cnt));
++		printk(KERN_DEBUG "\tmax_bud_bytes  %llu\n",
++		       (unsigned long long)le64_to_cpu(sup->max_bud_bytes));
++		printk(KERN_DEBUG "\tlog_lebs       %u\n",
++		       le32_to_cpu(sup->log_lebs));
++		printk(KERN_DEBUG "\tlpt_lebs       %u\n",
++		       le32_to_cpu(sup->lpt_lebs));
++		printk(KERN_DEBUG "\torph_lebs      %u\n",
++		       le32_to_cpu(sup->orph_lebs));
++		printk(KERN_DEBUG "\tjhead_cnt      %u\n",
++		       le32_to_cpu(sup->jhead_cnt));
++		printk(KERN_DEBUG "\tfanout         %u\n",
++		       le32_to_cpu(sup->fanout));
++		printk(KERN_DEBUG "\tlsave_cnt      %u\n",
++		       le32_to_cpu(sup->lsave_cnt));
++		printk(KERN_DEBUG "\tdefault_compr  %u\n",
++		       (int)le16_to_cpu(sup->default_compr));
++		printk(KERN_DEBUG "\trp_size        %llu\n",
++		       (unsigned long long)le64_to_cpu(sup->rp_size));
++		printk(KERN_DEBUG "\trp_uid         %u\n",
++		       le32_to_cpu(sup->rp_uid));
++		printk(KERN_DEBUG "\trp_gid         %u\n",
++		       le32_to_cpu(sup->rp_gid));
++		printk(KERN_DEBUG "\tfmt_version    %u\n",
++		       le32_to_cpu(sup->fmt_version));
++		printk(KERN_DEBUG "\ttime_gran      %u\n",
++		       le32_to_cpu(sup->time_gran));
++		printk(KERN_DEBUG "\tUUID           %02X%02X%02X%02X-%02X%02X"
++		       "-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n",
++		       sup->uuid[0], sup->uuid[1], sup->uuid[2], sup->uuid[3],
++		       sup->uuid[4], sup->uuid[5], sup->uuid[6], sup->uuid[7],
++		       sup->uuid[8], sup->uuid[9], sup->uuid[10], sup->uuid[11],
++		       sup->uuid[12], sup->uuid[13], sup->uuid[14],
++		       sup->uuid[15]);
++		break;
++	}
++	case UBIFS_MST_NODE:
++	{
++		const struct ubifs_mst_node *mst = node;
++
++		printk(KERN_DEBUG "\thighest_inum   %llu\n",
++		       (unsigned long long)le64_to_cpu(mst->highest_inum));
++		printk(KERN_DEBUG "\tcommit number  %llu\n",
++		       (unsigned long long)le64_to_cpu(mst->cmt_no));
++		printk(KERN_DEBUG "\tflags          %#x\n",
++		       le32_to_cpu(mst->flags));
++		printk(KERN_DEBUG "\tlog_lnum       %u\n",
++		       le32_to_cpu(mst->log_lnum));
++		printk(KERN_DEBUG "\troot_lnum      %u\n",
++		       le32_to_cpu(mst->root_lnum));
++		printk(KERN_DEBUG "\troot_offs      %u\n",
++		       le32_to_cpu(mst->root_offs));
++		printk(KERN_DEBUG "\troot_len       %u\n",
++		       le32_to_cpu(mst->root_len));
++		printk(KERN_DEBUG "\tgc_lnum        %u\n",
++		       le32_to_cpu(mst->gc_lnum));
++		printk(KERN_DEBUG "\tihead_lnum     %u\n",
++		       le32_to_cpu(mst->ihead_lnum));
++		printk(KERN_DEBUG "\tihead_offs     %u\n",
++		       le32_to_cpu(mst->ihead_offs));
++		printk(KERN_DEBUG "\tindex_size     %u\n",
++		       le32_to_cpu(mst->index_size));
++		printk(KERN_DEBUG "\tlpt_lnum       %u\n",
++		       le32_to_cpu(mst->lpt_lnum));
++		printk(KERN_DEBUG "\tlpt_offs       %u\n",
++		       le32_to_cpu(mst->lpt_offs));
++		printk(KERN_DEBUG "\tnhead_lnum     %u\n",
++		       le32_to_cpu(mst->nhead_lnum));
++		printk(KERN_DEBUG "\tnhead_offs     %u\n",
++		       le32_to_cpu(mst->nhead_offs));
++		printk(KERN_DEBUG "\tltab_lnum      %u\n",
++		       le32_to_cpu(mst->ltab_lnum));
++		printk(KERN_DEBUG "\tltab_offs      %u\n",
++		       le32_to_cpu(mst->ltab_offs));
++		printk(KERN_DEBUG "\tlsave_lnum     %u\n",
++		       le32_to_cpu(mst->lsave_lnum));
++		printk(KERN_DEBUG "\tlsave_offs     %u\n",
++		       le32_to_cpu(mst->lsave_offs));
++		printk(KERN_DEBUG "\tlscan_lnum     %u\n",
++		       le32_to_cpu(mst->lscan_lnum));
++		printk(KERN_DEBUG "\tleb_cnt        %u\n",
++		       le32_to_cpu(mst->leb_cnt));
++		printk(KERN_DEBUG "\tempty_lebs     %u\n",
++		       le32_to_cpu(mst->empty_lebs));
++		printk(KERN_DEBUG "\tidx_lebs       %u\n",
++		       le32_to_cpu(mst->idx_lebs));
++		printk(KERN_DEBUG "\ttotal_free     %llu\n",
++		       (unsigned long long)le64_to_cpu(mst->total_free));
++		printk(KERN_DEBUG "\ttotal_dirty    %llu\n",
++		       (unsigned long long)le64_to_cpu(mst->total_dirty));
++		printk(KERN_DEBUG "\ttotal_used     %llu\n",
++		       (unsigned long long)le64_to_cpu(mst->total_used));
++		printk(KERN_DEBUG "\ttotal_dead     %llu\n",
++		       (unsigned long long)le64_to_cpu(mst->total_dead));
++		printk(KERN_DEBUG "\ttotal_dark     %llu\n",
++		       (unsigned long long)le64_to_cpu(mst->total_dark));
++		break;
++	}
++	case UBIFS_REF_NODE:
++	{
++		const struct ubifs_ref_node *ref = node;
++
++		printk(KERN_DEBUG "\tlnum           %u\n",
++		       le32_to_cpu(ref->lnum));
++		printk(KERN_DEBUG "\toffs           %u\n",
++		       le32_to_cpu(ref->offs));
++		printk(KERN_DEBUG "\tjhead          %u\n",
++		       le32_to_cpu(ref->jhead));
++		break;
++	}
++	case UBIFS_INO_NODE:
++	{
++		const struct ubifs_ino_node *ino = node;
++
++		key_read(c, &ino->key, &key);
++		printk(KERN_DEBUG "\tkey            %s\n", DBGKEY(&key));
++		printk(KERN_DEBUG "\tcreat_sqnum    %llu\n",
++		       (unsigned long long)le64_to_cpu(ino->creat_sqnum));
++		printk(KERN_DEBUG "\tsize           %llu\n",
++		       (unsigned long long)le64_to_cpu(ino->size));
++		printk(KERN_DEBUG "\tnlink          %u\n",
++		       le32_to_cpu(ino->nlink));
++		printk(KERN_DEBUG "\tatime          %lld.%u\n",
++		       (long long)le64_to_cpu(ino->atime_sec),
++		       le32_to_cpu(ino->atime_nsec));
++		printk(KERN_DEBUG "\tmtime          %lld.%u\n",
++		       (long long)le64_to_cpu(ino->mtime_sec),
++		       le32_to_cpu(ino->mtime_nsec));
++		printk(KERN_DEBUG "\tctime          %lld.%u\n",
++		       (long long)le64_to_cpu(ino->ctime_sec),
++		       le32_to_cpu(ino->ctime_nsec));
++		printk(KERN_DEBUG "\tuid            %u\n",
++		       le32_to_cpu(ino->uid));
++		printk(KERN_DEBUG "\tgid            %u\n",
++		       le32_to_cpu(ino->gid));
++		printk(KERN_DEBUG "\tmode           %u\n",
++		       le32_to_cpu(ino->mode));
++		printk(KERN_DEBUG "\tflags          %#x\n",
++		       le32_to_cpu(ino->flags));
++		printk(KERN_DEBUG "\txattr_cnt      %u\n",
++		       le32_to_cpu(ino->xattr_cnt));
++		printk(KERN_DEBUG "\txattr_size     %llu\n",
++		       (unsigned long long)le64_to_cpu(ino->xattr_size));
++		printk(KERN_DEBUG "\txattr_names    %u\n",
++		       le32_to_cpu(ino->xattr_names));
++		printk(KERN_DEBUG "\tcompr_type     %#x\n",
++		       (int)le16_to_cpu(ino->compr_type));
++		printk(KERN_DEBUG "\tdata len       %u\n",
++		       le32_to_cpu(ino->data_len));
++		break;
++	}
++	case UBIFS_DENT_NODE:
++	case UBIFS_XENT_NODE:
++	{
++		const struct ubifs_dent_node *dent = node;
++		int nlen = le16_to_cpu(dent->nlen);
++
++		key_read(c, &dent->key, &key);
++		printk(KERN_DEBUG "\tkey            %s\n", DBGKEY(&key));
++		printk(KERN_DEBUG "\tinum           %llu\n",
++		       (unsigned long long)le64_to_cpu(dent->inum));
++		printk(KERN_DEBUG "\ttype           %d\n", (int)dent->type);
++		printk(KERN_DEBUG "\tnlen           %d\n", nlen);
++		printk(KERN_DEBUG "\tname           ");
++
++		if (nlen > UBIFS_MAX_NLEN)
++			printk(KERN_DEBUG "(bad name length, not printing, "
++					  "bad or corrupted node)");
++		else {
++			for (i = 0; i < nlen && dent->name[i]; i++)
++				printk("%c", dent->name[i]);
++		}
++		printk("\n");
++
++		break;
++	}
++	case UBIFS_DATA_NODE:
++	{
++		const struct ubifs_data_node *dn = node;
++		int dlen = le32_to_cpu(ch->len) - UBIFS_DATA_NODE_SZ;
++
++		key_read(c, &dn->key, &key);
++		printk(KERN_DEBUG "\tkey            %s\n", DBGKEY(&key));
++		printk(KERN_DEBUG "\tsize           %u\n",
++		       le32_to_cpu(dn->size));
++		printk(KERN_DEBUG "\tcompr_typ      %d\n",
++		       (int)le16_to_cpu(dn->compr_type));
++		printk(KERN_DEBUG "\tdata size      %d\n",
++		       dlen);
++		printk(KERN_DEBUG "\tdata:\n");
++		print_hex_dump(KERN_DEBUG, "\t", DUMP_PREFIX_OFFSET, 32, 1,
++			       (void *)&dn->data, dlen, 0);
++		break;
++	}
++	case UBIFS_TRUN_NODE:
++	{
++		const struct ubifs_trun_node *trun = node;
++
++		printk(KERN_DEBUG "\tinum           %u\n",
++		       le32_to_cpu(trun->inum));
++		printk(KERN_DEBUG "\told_size       %llu\n",
++		       (unsigned long long)le64_to_cpu(trun->old_size));
++		printk(KERN_DEBUG "\tnew_size       %llu\n",
++		       (unsigned long long)le64_to_cpu(trun->new_size));
++		break;
++	}
++	case UBIFS_IDX_NODE:
++	{
++		const struct ubifs_idx_node *idx = node;
++
++		n = le16_to_cpu(idx->child_cnt);
++		printk(KERN_DEBUG "\tchild_cnt      %d\n", n);
++		printk(KERN_DEBUG "\tlevel          %d\n",
++		       (int)le16_to_cpu(idx->level));
++		printk(KERN_DEBUG "\tBranches:\n");
++
++		for (i = 0; i < n && i < c->fanout - 1; i++) {
++			const struct ubifs_branch *br;
++
++			br = ubifs_idx_branch(c, idx, i);
++			key_read(c, &br->key, &key);
++			printk(KERN_DEBUG "\t%d: LEB %d:%d len %d key %s\n",
++			       i, le32_to_cpu(br->lnum), le32_to_cpu(br->offs),
++			       le32_to_cpu(br->len), DBGKEY(&key));
++		}
++		break;
++	}
++	case UBIFS_CS_NODE:
++		break;
++	case UBIFS_ORPH_NODE:
++	{
++		const struct ubifs_orph_node *orph = node;
++
++		printk(KERN_DEBUG "\tcommit number  %llu\n",
++		       (unsigned long long)
++				le64_to_cpu(orph->cmt_no) & LLONG_MAX);
++		printk(KERN_DEBUG "\tlast node flag %llu\n",
++		       (unsigned long long)(le64_to_cpu(orph->cmt_no)) >> 63);
++		n = (le32_to_cpu(ch->len) - UBIFS_ORPH_NODE_SZ) >> 3;
++		printk(KERN_DEBUG "\t%d orphan inode numbers:\n", n);
++		for (i = 0; i < n; i++)
++			printk(KERN_DEBUG "\t  ino %llu\n",
++			       le64_to_cpu(orph->inos[i]));
++		break;
++	}
++	default:
++		printk(KERN_DEBUG "node type %d was not recognized\n",
++		       (int)ch->node_type);
++	}
++	spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_budget_req(const struct ubifs_budget_req *req)
++{
++	spin_lock(&dbg_lock);
++	printk(KERN_DEBUG "Budgeting request: new_ino %d, dirtied_ino %d\n",
++	       req->new_ino, req->dirtied_ino);
++	printk(KERN_DEBUG "\tnew_ino_d   %d, dirtied_ino_d %d\n",
++	       req->new_ino_d, req->dirtied_ino_d);
++	printk(KERN_DEBUG "\tnew_page    %d, dirtied_page %d\n",
++	       req->new_page, req->dirtied_page);
++	printk(KERN_DEBUG "\tnew_dent    %d, mod_dent     %d\n",
++	       req->new_dent, req->mod_dent);
++	printk(KERN_DEBUG "\tidx_growth  %d\n", req->idx_growth);
++	printk(KERN_DEBUG "\tdata_growth %d dd_growth     %d\n",
++	       req->data_growth, req->dd_growth);
++	spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_lstats(const struct ubifs_lp_stats *lst)
++{
++	spin_lock(&dbg_lock);
++	printk(KERN_DEBUG "Lprops statistics: empty_lebs %d, idx_lebs  %d\n",
++	       lst->empty_lebs, lst->idx_lebs);
++	printk(KERN_DEBUG "\ttaken_empty_lebs %d, total_free %lld, "
++	       "total_dirty %lld\n", lst->taken_empty_lebs, lst->total_free,
++	       lst->total_dirty);
++	printk(KERN_DEBUG "\ttotal_used %lld, total_dark %lld, "
++	       "total_dead %lld\n", lst->total_used, lst->total_dark,
++	       lst->total_dead);
++	spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_budg(struct ubifs_info *c)
++{
++	int i;
++	struct rb_node *rb;
++	struct ubifs_bud *bud;
++	struct ubifs_gced_idx_leb *idx_gc;
++
++	spin_lock(&dbg_lock);
++	printk(KERN_DEBUG "Budgeting info: budg_data_growth %lld, "
++	       "budg_dd_growth %lld, budg_idx_growth %lld\n",
++	       c->budg_data_growth, c->budg_dd_growth, c->budg_idx_growth);
++	printk(KERN_DEBUG "\tdata budget sum %lld, total budget sum %lld, "
++	       "freeable_cnt %d\n", c->budg_data_growth + c->budg_dd_growth,
++	       c->budg_data_growth + c->budg_dd_growth + c->budg_idx_growth,
++	       c->freeable_cnt);
++	printk(KERN_DEBUG "\tmin_idx_lebs %d, old_idx_sz %lld, "
++	       "calc_idx_sz %lld, idx_gc_cnt %d\n", c->min_idx_lebs,
++	       c->old_idx_sz, c->calc_idx_sz, c->idx_gc_cnt);
++	printk(KERN_DEBUG "\tdirty_pg_cnt %ld, dirty_ino_cnt %ld, "
++	       "dirty_zn_cnt %ld, clean_zn_cnt %ld\n",
++	       atomic_long_read(&c->dirty_pg_cnt),
++	       atomic_long_read(&c->dirty_ino_cnt),
++	       atomic_long_read(&c->dirty_zn_cnt),
++	       atomic_long_read(&c->clean_zn_cnt));
++	printk(KERN_DEBUG "\tdark_wm %d, dead_wm %d, max_idx_node_sz %d\n",
++	       c->dark_wm, c->dead_wm, c->max_idx_node_sz);
++	printk(KERN_DEBUG "\tgc_lnum %d, ihead_lnum %d\n",
++	       c->gc_lnum, c->ihead_lnum);
++	for (i = 0; i < c->jhead_cnt; i++)
++		printk(KERN_DEBUG "\tjhead %d\t LEB %d\n",
++		       c->jheads[i].wbuf.jhead, c->jheads[i].wbuf.lnum);
++	for (rb = rb_first(&c->buds); rb; rb = rb_next(rb)) {
++		bud = rb_entry(rb, struct ubifs_bud, rb);
++		printk(KERN_DEBUG "\tbud LEB %d\n", bud->lnum);
++	}
++	list_for_each_entry(bud, &c->old_buds, list)
++		printk(KERN_DEBUG "\told bud LEB %d\n", bud->lnum);
++	list_for_each_entry(idx_gc, &c->idx_gc, list)
++		printk(KERN_DEBUG "\tGC'ed idx LEB %d unmap %d\n",
++		       idx_gc->lnum, idx_gc->unmap);
++	printk(KERN_DEBUG "\tcommit state %d\n", c->cmt_state);
++	spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp)
++{
++	printk(KERN_DEBUG "LEB %d lprops: free %d, dirty %d (used %d), "
++	       "flags %#x\n", lp->lnum, lp->free, lp->dirty,
++	       c->leb_size - lp->free - lp->dirty, lp->flags);
++}
++
++void dbg_dump_lprops(struct ubifs_info *c)
++{
++	int lnum, err;
++	struct ubifs_lprops lp;
++	struct ubifs_lp_stats lst;
++
++	printk(KERN_DEBUG "Dumping LEB properties\n");
++	ubifs_get_lp_stats(c, &lst);
++	dbg_dump_lstats(&lst);
++
++	for (lnum = c->main_first; lnum < c->leb_cnt; lnum++) {
++		err = ubifs_read_one_lp(c, lnum, &lp);
++		if (err)
++			ubifs_err("cannot read lprops for LEB %d", lnum);
++
++		dbg_dump_lprop(c, &lp);
++	}
++}
++
++void dbg_dump_leb(const struct ubifs_info *c, int lnum)
++{
++	struct ubifs_scan_leb *sleb;
++	struct ubifs_scan_node *snod;
++
++	if (dbg_failure_mode)
++		return;
++
++	printk(KERN_DEBUG "Dumping LEB %d\n", lnum);
++
++	sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
++	if (IS_ERR(sleb)) {
++		ubifs_err("scan error %d", (int)PTR_ERR(sleb));
++		return;
++	}
++
++	printk(KERN_DEBUG "LEB %d has %d nodes ending at %d\n", lnum,
++	       sleb->nodes_cnt, sleb->endpt);
++
++	list_for_each_entry(snod, &sleb->nodes, list) {
++		cond_resched();
++		printk(KERN_DEBUG "Dumping node at LEB %d:%d len %d\n", lnum,
++		       snod->offs, snod->len);
++		dbg_dump_node(c, snod->node);
++	}
++
++	ubifs_scan_destroy(sleb);
++	return;
++}
++
++void dbg_dump_znode(const struct ubifs_info *c,
++		    const struct ubifs_znode *znode)
++{
++	int n;
++	const struct ubifs_zbranch *zbr;
++
++	spin_lock(&dbg_lock);
++	if (znode->parent)
++		zbr = &znode->parent->zbranch[znode->iip];
++	else
++		zbr = &c->zroot;
++
++	printk(KERN_DEBUG "znode %p, LEB %d:%d len %d parent %p iip %d level %d"
++	       " child_cnt %d flags %lx\n", znode, zbr->lnum, zbr->offs,
++	       zbr->len, znode->parent, znode->iip, znode->level,
++	       znode->child_cnt, znode->flags);
++
++	if (znode->child_cnt <= 0 || znode->child_cnt > c->fanout) {
++		spin_unlock(&dbg_lock);
++		return;
++	}
++
++	printk(KERN_DEBUG "zbranches:\n");
++	for (n = 0; n < znode->child_cnt; n++) {
++		zbr = &znode->zbranch[n];
++		if (znode->level > 0)
++			printk(KERN_DEBUG "\t%d: znode %p LEB %d:%d len %d key "
++					  "%s\n", n, zbr->znode, zbr->lnum,
++					  zbr->offs, zbr->len,
++					  DBGKEY(&zbr->key));
++		else
++			printk(KERN_DEBUG "\t%d: LNC %p LEB %d:%d len %d key "
++					  "%s\n", n, zbr->znode, zbr->lnum,
++					  zbr->offs, zbr->len,
++					  DBGKEY(&zbr->key));
++	}
++	spin_unlock(&dbg_lock);
++}
++
++void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat)
++{
++	int i;
++
++	printk(KERN_DEBUG "Dumping heap cat %d (%d elements)\n",
++	       cat, heap->cnt);
++	for (i = 0; i < heap->cnt; i++) {
++		struct ubifs_lprops *lprops = heap->arr[i];
++
++		printk(KERN_DEBUG "\t%d. LEB %d hpos %d free %d dirty %d "
++		       "flags %d\n", i, lprops->lnum, lprops->hpos,
++		       lprops->free, lprops->dirty, lprops->flags);
++	}
++}
++
++void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
++		    struct ubifs_nnode *parent, int iip)
++{
++	int i;
++
++	printk(KERN_DEBUG "Dumping pnode:\n");
++	printk(KERN_DEBUG "\taddress %zx parent %zx cnext %zx\n",
++	       (size_t)pnode, (size_t)parent, (size_t)pnode->cnext);
++	printk(KERN_DEBUG "\tflags %lu iip %d level %d num %d\n",
++	       pnode->flags, iip, pnode->level, pnode->num);
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		struct ubifs_lprops *lp = &pnode->lprops[i];
++
++		printk(KERN_DEBUG "\t%d: free %d dirty %d flags %d lnum %d\n",
++		       i, lp->free, lp->dirty, lp->flags, lp->lnum);
++	}
++}
++
++void dbg_dump_tnc(struct ubifs_info *c)
++{
++	struct ubifs_znode *znode;
++	int level;
++
++	printk(KERN_DEBUG "\n");
++	printk(KERN_DEBUG "Dumping the TNC tree\n");
++	znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL);
++	level = znode->level;
++	printk(KERN_DEBUG "== Level %d ==\n", level);
++	while (znode) {
++		if (level != znode->level) {
++			level = znode->level;
++			printk(KERN_DEBUG "== Level %d ==\n", level);
++		}
++		dbg_dump_znode(c, znode);
++		znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);
++	}
++
++	printk(KERN_DEBUG "\n");
++}
++
++static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode,
++		      void *priv)
++{
++	dbg_dump_znode(c, znode);
++	return 0;
++}
++
++/**
++ * dbg_dump_index - dump the on-flash index.
++ * @c: UBIFS file-system description object
++ *
++ * This function dumps whole UBIFS indexing B-tree, unlike 'dbg_dump_tnc()'
++ * which dumps only in-memory znodes and does not read znodes which from flash.
++ */
++void dbg_dump_index(struct ubifs_info *c)
++{
++	dbg_walk_index(c, NULL, dump_znode, NULL);
++}
++
++/*
++ * dbg_check_dir - check directory inode size and link count.
++ * @c: UBIFS file-system description object
++ * @dir: the directory to calculate size for
++ * @size: the result is returned here
++ *
++ * This function makes sure that directory size and link count are correct.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ *
++ * Note, it is good idea to make sure the @dir->i_mutex is locked before
++ * calling this function.
++ */
++int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir)
++{
++	unsigned int nlink = 2;
++	union ubifs_key key;
++	struct ubifs_dent_node *dent, *pdent = NULL;
++	struct qstr nm = { .name = NULL };
++	loff_t size = UBIFS_INO_NODE_SZ;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
++		return 0;
++
++	if (!S_ISDIR(dir->i_mode))
++		return 0;
++
++	lowest_dent_key(c, &key, dir->i_ino);
++	while (1) {
++		int err;
++
++		dent = ubifs_tnc_next_ent(c, &key, &nm);
++		if (IS_ERR(dent)) {
++			err = PTR_ERR(dent);
++			if (err == -ENOENT)
++				break;
++			return err;
++		}
++
++		nm.name = dent->name;
++		nm.len = le16_to_cpu(dent->nlen);
++		size += CALC_DENT_SIZE(nm.len);
++		if (dent->type == UBIFS_ITYPE_DIR)
++			nlink += 1;
++		kfree(pdent);
++		pdent = dent;
++		key_read(c, &dent->key, &key);
++	}
++	kfree(pdent);
++
++	if (i_size_read(dir) != size) {
++		ubifs_err("directory inode %lu has size %llu, "
++			  "but calculated size is %llu", dir->i_ino,
++			  (unsigned long long)i_size_read(dir),
++			  (unsigned long long)size);
++		dump_stack();
++		return -EINVAL;
++	}
++	if (dir->i_nlink != nlink) {
++		ubifs_err("directory inode %lu has nlink %u, but calculated "
++			  "nlink is %u", dir->i_ino, dir->i_nlink, nlink);
++		dump_stack();
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/**
++ * dbg_check_key_order - make sure that colliding keys are properly ordered.
++ * @c: UBIFS file-system description object
++ * @zbr1: first zbranch
++ * @zbr1: following zbranch
++ *
++ * In UBIFS indexing B-tree colliding keys has to be sorted in binary order of
++ * names of the direntries/xentries which are referred by the keys. This
++ * function reads direntries/xentries referred by @zbr1 and @zbr2 and makes
++ * sure the name of direntry/xentry referred by @zbr1 is less than
++ * direntry/xentry referred by @zbr2. Returns zero if this is true, %1 if not,
++ * and a negative error code in case of failure.
++ */
++static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1,
++			       struct ubifs_zbranch *zbr2)
++{
++	int err, nlen1, nlen2, cmp;
++	struct ubifs_dent_node *dent1, *dent2;
++	union ubifs_key key;
++
++	ubifs_assert(!keys_cmp(c, &zbr1->key, &zbr2->key));
++	dent1 = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
++	if (!dent1)
++		return -ENOMEM;
++	dent2 = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
++	if (!dent2) {
++		err = -ENOMEM;
++		goto out_free;
++	}
++
++	err = ubifs_tnc_read_node(c, zbr1, dent1);
++	if (err)
++		goto out_free;
++	err = ubifs_validate_entry(c, dent1);
++	if (err)
++		goto out_free;
++
++	err = ubifs_tnc_read_node(c, zbr2, dent2);
++	if (err)
++		goto out_free;
++	err = ubifs_validate_entry(c, dent2);
++	if (err)
++		goto out_free;
++
++	/* Make sure node keys are the same as in zbranch */
++	err = 1;
++	key_read(c, &dent1->key, &key);
++	if (keys_cmp(c, &zbr1->key, &key)) {
++		dbg_err("1st entry at %d:%d has key %s", zbr1->lnum,
++			zbr1->offs, DBGKEY(&key));
++		dbg_err("but it should have key %s according to tnc",
++			DBGKEY(&zbr1->key));
++			dbg_dump_node(c, dent1);
++			goto out_free;
++	}
++
++	key_read(c, &dent2->key, &key);
++	if (keys_cmp(c, &zbr2->key, &key)) {
++		dbg_err("2nd entry at %d:%d has key %s", zbr1->lnum,
++			zbr1->offs, DBGKEY(&key));
++		dbg_err("but it should have key %s according to tnc",
++			DBGKEY(&zbr2->key));
++			dbg_dump_node(c, dent2);
++			goto out_free;
++	}
++
++	nlen1 = le16_to_cpu(dent1->nlen);
++	nlen2 = le16_to_cpu(dent2->nlen);
++
++	cmp = memcmp(dent1->name, dent2->name, min_t(int, nlen1, nlen2));
++	if (cmp < 0 || (cmp == 0 && nlen1 < nlen2)) {
++		err = 0;
++		goto out_free;
++	}
++	if (cmp == 0 && nlen1 == nlen2)
++		dbg_err("2 xent/dent nodes with the same name");
++	else
++		dbg_err("bad order of colliding key %s",
++			DBGKEY(&key));
++
++	dbg_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs);
++	dbg_dump_node(c, dent1);
++	dbg_msg("second node at %d:%d\n", zbr2->lnum, zbr2->offs);
++	dbg_dump_node(c, dent2);
++
++out_free:
++	kfree(dent2);
++	kfree(dent1);
++	return err;
++}
++
++/**
++ * dbg_check_znode - check if znode is all right.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch which points to this znode
++ *
++ * This function makes sure that znode referred to by @zbr is all right.
++ * Returns zero if it is, and %-EINVAL if it is not.
++ */
++static int dbg_check_znode(struct ubifs_info *c, struct ubifs_zbranch *zbr)
++{
++	struct ubifs_znode *znode = zbr->znode;
++	struct ubifs_znode *zp = znode->parent;
++	int n, err, cmp;
++
++	if (znode->child_cnt <= 0 || znode->child_cnt > c->fanout) {
++		err = 1;
++		goto out;
++	}
++	if (znode->level < 0) {
++		err = 2;
++		goto out;
++	}
++	if (znode->iip < 0 || znode->iip >= c->fanout) {
++		err = 3;
++		goto out;
++	}
++
++	if (zbr->len == 0)
++		/* Only dirty zbranch may have no on-flash nodes */
++		if (!ubifs_zn_dirty(znode)) {
++			err = 4;
++			goto out;
++		}
++
++	if (ubifs_zn_dirty(znode)) {
++		/*
++		 * If znode is dirty, its parent has to be dirty as well. The
++		 * order of the operation is important, so we have to have
++		 * memory barriers.
++		 */
++		smp_mb();
++		if (zp && !ubifs_zn_dirty(zp)) {
++			/*
++			 * The dirty flag is atomic and is cleared outside the
++			 * TNC mutex, so znode's dirty flag may now have
++			 * been cleared. The child is always cleared before the
++			 * parent, so we just need to check again.
++			 */
++			smp_mb();
++			if (ubifs_zn_dirty(znode)) {
++				err = 5;
++				goto out;
++			}
++		}
++	}
++
++	if (zp) {
++		const union ubifs_key *min, *max;
++
++		if (znode->level != zp->level - 1) {
++			err = 6;
++			goto out;
++		}
++
++		/* Make sure the 'parent' pointer in our znode is correct */
++		err = ubifs_search_zbranch(c, zp, &zbr->key, &n);
++		if (!err) {
++			/* This zbranch does not exist in the parent */
++			err = 7;
++			goto out;
++		}
++
++		if (znode->iip >= zp->child_cnt) {
++			err = 8;
++			goto out;
++		}
++
++		if (znode->iip != n) {
++			/* This may happen only in case of collisions */
++			if (keys_cmp(c, &zp->zbranch[n].key,
++				     &zp->zbranch[znode->iip].key)) {
++				err = 9;
++				goto out;
++			}
++			n = znode->iip;
++		}
++
++		/*
++		 * Make sure that the first key in our znode is greater than or
++		 * equal to the key in the pointing zbranch.
++		 */
++		min = &zbr->key;
++		cmp = keys_cmp(c, min, &znode->zbranch[0].key);
++		if (cmp == 1) {
++			err = 10;
++			goto out;
++		}
++
++		if (n + 1 < zp->child_cnt) {
++			max = &zp->zbranch[n + 1].key;
++
++			/*
++			 * Make sure the last key in our znode is less or
++			 * equivalent than the the key in zbranch which goes
++			 * after our pointing zbranch.
++			 */
++			cmp = keys_cmp(c, max,
++				&znode->zbranch[znode->child_cnt - 1].key);
++			if (cmp == -1) {
++				err = 11;
++				goto out;
++			}
++		}
++	} else {
++		/* This may only be root znode */
++		if (zbr != &c->zroot) {
++			err = 12;
++			goto out;
++		}
++	}
++
++	/*
++	 * Make sure that next key is greater or equivalent then the previous
++	 * one.
++	 */
++	for (n = 1; n < znode->child_cnt; n++) {
++		cmp = keys_cmp(c, &znode->zbranch[n - 1].key,
++			       &znode->zbranch[n].key);
++		if (cmp > 0) {
++			err = 13;
++			goto out;
++		}
++		if (cmp == 0) {
++			/* This can only be keys with colliding hash */
++			if (!is_hash_key(c, &znode->zbranch[n].key)) {
++				err = 14;
++				goto out;
++			}
++
++			if (znode->level != 0 || c->replaying)
++				continue;
++
++			/*
++			 * Colliding keys should follow binary order of
++			 * corresponding xentry/dentry names.
++			 */
++			err = dbg_check_key_order(c, &znode->zbranch[n - 1],
++						  &znode->zbranch[n]);
++			if (err < 0)
++				return err;
++			if (err) {
++				err = 15;
++				goto out;
++			}
++		}
++	}
++
++	for (n = 0; n < znode->child_cnt; n++) {
++		if (!znode->zbranch[n].znode &&
++		    (znode->zbranch[n].lnum == 0 ||
++		     znode->zbranch[n].len == 0)) {
++			err = 16;
++			goto out;
++		}
++
++		if (znode->zbranch[n].lnum != 0 &&
++		    znode->zbranch[n].len == 0) {
++			err = 17;
++			goto out;
++		}
++
++		if (znode->zbranch[n].lnum == 0 &&
++		    znode->zbranch[n].len != 0) {
++			err = 18;
++			goto out;
++		}
++
++		if (znode->zbranch[n].lnum == 0 &&
++		    znode->zbranch[n].offs != 0) {
++			err = 19;
++			goto out;
++		}
++
++		if (znode->level != 0 && znode->zbranch[n].znode)
++			if (znode->zbranch[n].znode->parent != znode) {
++				err = 20;
++				goto out;
++			}
++	}
++
++	return 0;
++
++out:
++	ubifs_err("failed, error %d", err);
++	ubifs_msg("dump of the znode");
++	dbg_dump_znode(c, znode);
++	if (zp) {
++		ubifs_msg("dump of the parent znode");
++		dbg_dump_znode(c, zp);
++	}
++	dump_stack();
++	return -EINVAL;
++}
++
++/**
++ * dbg_check_tnc - check TNC tree.
++ * @c: UBIFS file-system description object
++ * @extra: do extra checks that are possible at start commit
++ *
++ * This function traverses whole TNC tree and checks every znode. Returns zero
++ * if everything is all right and %-EINVAL if something is wrong with TNC.
++ */
++int dbg_check_tnc(struct ubifs_info *c, int extra)
++{
++	struct ubifs_znode *znode;
++	long clean_cnt = 0, dirty_cnt = 0;
++	int err, last;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_TNC))
++		return 0;
++
++	ubifs_assert(mutex_is_locked(&c->tnc_mutex));
++	if (!c->zroot.znode)
++		return 0;
++
++	znode = ubifs_tnc_postorder_first(c->zroot.znode);
++	while (1) {
++		struct ubifs_znode *prev;
++		struct ubifs_zbranch *zbr;
++
++		if (!znode->parent)
++			zbr = &c->zroot;
++		else
++			zbr = &znode->parent->zbranch[znode->iip];
++
++		err = dbg_check_znode(c, zbr);
++		if (err)
++			return err;
++
++		if (extra) {
++			if (ubifs_zn_dirty(znode))
++				dirty_cnt += 1;
++			else
++				clean_cnt += 1;
++		}
++
++		prev = znode;
++		znode = ubifs_tnc_postorder_next(znode);
++		if (!znode)
++			break;
++
++		/*
++		 * If the last key of this znode is equivalent to the first key
++		 * of the next znode (collision), then check order of the keys.
++		 */
++		last = prev->child_cnt - 1;
++		if (prev->level == 0 && znode->level == 0 && !c->replaying &&
++		    !keys_cmp(c, &prev->zbranch[last].key,
++			      &znode->zbranch[0].key)) {
++			err = dbg_check_key_order(c, &prev->zbranch[last],
++						  &znode->zbranch[0]);
++			if (err < 0)
++				return err;
++			if (err) {
++				ubifs_msg("first znode");
++				dbg_dump_znode(c, prev);
++				ubifs_msg("second znode");
++				dbg_dump_znode(c, znode);
++				return -EINVAL;
++			}
++		}
++	}
++
++	if (extra) {
++		if (clean_cnt != atomic_long_read(&c->clean_zn_cnt)) {
++			ubifs_err("incorrect clean_zn_cnt %ld, calculated %ld",
++				  atomic_long_read(&c->clean_zn_cnt),
++				  clean_cnt);
++			return -EINVAL;
++		}
++		if (dirty_cnt != atomic_long_read(&c->dirty_zn_cnt)) {
++			ubifs_err("incorrect dirty_zn_cnt %ld, calculated %ld",
++				  atomic_long_read(&c->dirty_zn_cnt),
++				  dirty_cnt);
++			return -EINVAL;
++		}
++	}
++
++	return 0;
++}
++
++/**
++ * dbg_walk_index - walk the on-flash index.
++ * @c: UBIFS file-system description object
++ * @leaf_cb: called for each leaf node
++ * @znode_cb: called for each indexing node
++ * @priv: private date which is passed to callbacks
++ *
++ * This function walks the UBIFS index and calls the @leaf_cb for each leaf
++ * node and @znode_cb for each indexing node. Returns zero in case of success
++ * and a negative error code in case of failure.
++ *
++ * It would be better if this function removed every znode it pulled to into
++ * the TNC, so that the behavior more closely matched the non-debugging
++ * behavior.
++ */
++int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
++		   dbg_znode_callback znode_cb, void *priv)
++{
++	int err;
++	struct ubifs_zbranch *zbr;
++	struct ubifs_znode *znode, *child;
++
++	mutex_lock(&c->tnc_mutex);
++	/* If the root indexing node is not in TNC - pull it */
++	if (!c->zroot.znode) {
++		c->zroot.znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
++		if (IS_ERR(c->zroot.znode)) {
++			err = PTR_ERR(c->zroot.znode);
++			c->zroot.znode = NULL;
++			goto out_unlock;
++		}
++	}
++
++	/*
++	 * We are going to traverse the indexing tree in the postorder manner.
++	 * Go down and find the leftmost indexing node where we are going to
++	 * start from.
++	 */
++	znode = c->zroot.znode;
++	while (znode->level > 0) {
++		zbr = &znode->zbranch[0];
++		child = zbr->znode;
++		if (!child) {
++			child = ubifs_load_znode(c, zbr, znode, 0);
++			if (IS_ERR(child)) {
++				err = PTR_ERR(child);
++				goto out_unlock;
++			}
++			zbr->znode = child;
++		}
++
++		znode = child;
++	}
++
++	/* Iterate over all indexing nodes */
++	while (1) {
++		int idx;
++
++		cond_resched();
++
++		if (znode_cb) {
++			err = znode_cb(c, znode, priv);
++			if (err) {
++				ubifs_err("znode checking function returned "
++					  "error %d", err);
++				dbg_dump_znode(c, znode);
++				goto out_dump;
++			}
++		}
++		if (leaf_cb && znode->level == 0) {
++			for (idx = 0; idx < znode->child_cnt; idx++) {
++				zbr = &znode->zbranch[idx];
++				err = leaf_cb(c, zbr, priv);
++				if (err) {
++					ubifs_err("leaf checking function "
++						  "returned error %d, for leaf "
++						  "at LEB %d:%d",
++						  err, zbr->lnum, zbr->offs);
++					goto out_dump;
++				}
++			}
++		}
++
++		if (!znode->parent)
++			break;
++
++		idx = znode->iip + 1;
++		znode = znode->parent;
++		if (idx < znode->child_cnt) {
++			/* Switch to the next index in the parent */
++			zbr = &znode->zbranch[idx];
++			child = zbr->znode;
++			if (!child) {
++				child = ubifs_load_znode(c, zbr, znode, idx);
++				if (IS_ERR(child)) {
++					err = PTR_ERR(child);
++					goto out_unlock;
++				}
++				zbr->znode = child;
++			}
++			znode = child;
++		} else
++			/*
++			 * This is the last child, switch to the parent and
++			 * continue.
++			 */
++			continue;
++
++		/* Go to the lowest leftmost znode in the new sub-tree */
++		while (znode->level > 0) {
++			zbr = &znode->zbranch[0];
++			child = zbr->znode;
++			if (!child) {
++				child = ubifs_load_znode(c, zbr, znode, 0);
++				if (IS_ERR(child)) {
++					err = PTR_ERR(child);
++					goto out_unlock;
++				}
++				zbr->znode = child;
++			}
++			znode = child;
++		}
++	}
++
++	mutex_unlock(&c->tnc_mutex);
++	return 0;
++
++out_dump:
++	if (znode->parent)
++		zbr = &znode->parent->zbranch[znode->iip];
++	else
++		zbr = &c->zroot;
++	ubifs_msg("dump of znode at LEB %d:%d", zbr->lnum, zbr->offs);
++	dbg_dump_znode(c, znode);
++out_unlock:
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * add_size - add znode size to partially calculated index size.
++ * @c: UBIFS file-system description object
++ * @znode: znode to add size for
++ * @priv: partially calculated index size
++ *
++ * This is a helper function for 'dbg_check_idx_size()' which is called for
++ * every indexing node and adds its size to the 'long long' variable pointed to
++ * by @priv.
++ */
++static int add_size(struct ubifs_info *c, struct ubifs_znode *znode, void *priv)
++{
++	long long *idx_size = priv;
++	int add;
++
++	add = ubifs_idx_node_sz(c, znode->child_cnt);
++	add = ALIGN(add, 8);
++	*idx_size += add;
++	return 0;
++}
++
++/**
++ * dbg_check_idx_size - check index size.
++ * @c: UBIFS file-system description object
++ * @idx_size: size to check
++ *
++ * This function walks the UBIFS index, calculates its size and checks that the
++ * size is equivalent to @idx_size. Returns zero in case of success and a
++ * negative error code in case of failure.
++ */
++int dbg_check_idx_size(struct ubifs_info *c, long long idx_size)
++{
++	int err;
++	long long calc = 0;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_IDX_SZ))
++		return 0;
++
++	err = dbg_walk_index(c, NULL, add_size, &calc);
++	if (err) {
++		ubifs_err("error %d while walking the index", err);
++		return err;
++	}
++
++	if (calc != idx_size) {
++		ubifs_err("index size check failed: calculated size is %lld, "
++			  "should be %lld", calc, idx_size);
++		dump_stack();
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/**
++ * fsck_inode - information about an inode used when checking the file-system.
++ * @rb: link in the RB-tree of inodes
++ * @inum: inode number
++ * @mode: inode type, permissions, etc
++ * @nlink: inode link count
++ * @xatt_cnt: count of extended attributes
++ * @references: how many directory/xattr entries refer this inode (calculated
++ *              while walking the index)
++ * @calc_cnt: for directory inode count of child directories, for regular files
++ *            count of extended attributes
++ * @size: inode size (read from on-flash inode)
++ * @xattr_sz: summary size of all extended attributes (read from on-flash
++ *            inode)
++ * @calc_sz: for directories calculated directory size, for regular files
++ *           calculated summary size of all extended attributes
++ */
++struct fsck_inode {
++	struct rb_node rb;
++	ino_t inum;
++	umode_t mode;
++	int nlink;
++	int xattr_cnt;
++	int references;
++	int calc_cnt;
++	long long size;
++	long long xattr_sz;
++	long long calc_sz;
++};
++
++/**
++ * fsck_data - private FS checking information.
++ * @inodes: RB-tree of all inodes (contains @struct fsck_inode objects)
++ */
++struct fsck_data {
++	struct rb_root inodes;
++};
++
++/**
++ * add_inode - add inode information to RB-tree of inodes.
++ * @c: UBIFS file-system description object
++ * @fsckd: FS checking information
++ * @ino: raw UBIFS inode to add
++ *
++ * This is a helper function for 'check_leaf()' which adds information about
++ * inode @ino to the RB-tree of inodes. Returns inode information pointer in
++ * case of success and a negative error code in case of failure.
++ */
++static struct fsck_inode *add_inode(struct ubifs_info *c,
++				    struct fsck_data *fsckd,
++				    struct ubifs_ino_node *ino)
++{
++	struct rb_node **p, *parent = NULL;
++	struct fsck_inode *fscki;
++	ino_t inum = key_inum_flash(c, &ino->key);
++
++	p = &fsckd->inodes.rb_node;
++	while (*p) {
++		parent = *p;
++		fscki = rb_entry(parent, struct fsck_inode, rb);
++		if (inum < fscki->inum)
++			p = &(*p)->rb_left;
++		else if (inum > fscki->inum)
++			p = &(*p)->rb_right;
++		else
++			return fscki;
++	}
++
++	fscki = kzalloc(sizeof(struct fsck_inode), GFP_NOFS);
++	if (!fscki)
++		return ERR_PTR(-ENOMEM);
++
++	fscki->inum = inum;
++	fscki->nlink = le32_to_cpu(ino->nlink);
++	fscki->size = le64_to_cpu(ino->size);
++	fscki->xattr_cnt = le32_to_cpu(ino->xattr_cnt);
++	fscki->xattr_sz = le64_to_cpu(ino->xattr_size);
++	fscki->mode = le32_to_cpu(ino->mode);
++	if (S_ISDIR(fscki->mode)) {
++		fscki->calc_sz = UBIFS_INO_NODE_SZ;
++		fscki->calc_cnt = 2;
++	}
++	rb_link_node(&fscki->rb, parent, p);
++	rb_insert_color(&fscki->rb, &fsckd->inodes);
++	return fscki;
++}
++
++/**
++ * search_inode - search inode in the RB-tree of inodes.
++ * @fsckd: FS checking information
++ * @inum: inode number to search
++ *
++ * This is a helper function for 'check_leaf()' which searches inode @inum in
++ * the RB-tree of inodes and returns an inode information pointer or %NULL if
++ * the inode was not found.
++ */
++static struct fsck_inode *search_inode(struct fsck_data *fsckd, ino_t inum)
++{
++	struct rb_node *p;
++	struct fsck_inode *fscki;
++
++	p = fsckd->inodes.rb_node;
++	while (p) {
++		fscki = rb_entry(p, struct fsck_inode, rb);
++		if (inum < fscki->inum)
++			p = p->rb_left;
++		else if (inum > fscki->inum)
++			p = p->rb_right;
++		else
++			return fscki;
++	}
++	return NULL;
++}
++
++/**
++ * read_add_inode - read inode node and add it to RB-tree of inodes.
++ * @c: UBIFS file-system description object
++ * @fsckd: FS checking information
++ * @inum: inode number to read
++ *
++ * This is a helper function for 'check_leaf()' which finds inode node @inum in
++ * the index, reads it, and adds it to the RB-tree of inodes. Returns inode
++ * information pointer in case of success and a negative error code in case of
++ * failure.
++ */
++static struct fsck_inode *read_add_inode(struct ubifs_info *c,
++					 struct fsck_data *fsckd, ino_t inum)
++{
++	int n, err;
++	union ubifs_key key;
++	struct ubifs_znode *znode;
++	struct ubifs_zbranch *zbr;
++	struct ubifs_ino_node *ino;
++	struct fsck_inode *fscki;
++
++	fscki = search_inode(fsckd, inum);
++	if (fscki)
++		return fscki;
++
++	ino_key_init(c, &key, inum);
++	err = ubifs_lookup_level0(c, &key, &znode, &n);
++	if (!err) {
++		ubifs_err("inode %lu not found in index", inum);
++		return ERR_PTR(-ENOENT);
++	} else if (err < 0) {
++		ubifs_err("error %d while looking up inode %lu", err, inum);
++		return ERR_PTR(err);
++	}
++
++	zbr = &znode->zbranch[n];
++	if (zbr->len < UBIFS_INO_NODE_SZ) {
++		ubifs_err("bad node %lu node length %d", inum, zbr->len);
++		return ERR_PTR(-EINVAL);
++	}
++
++	ino = kmalloc(zbr->len, GFP_NOFS);
++	if (!ino)
++		return ERR_PTR(-ENOMEM);
++
++	err = ubifs_tnc_read_node(c, zbr, ino);
++	if (err) {
++		ubifs_err("cannot read inode node at LEB %d:%d, error %d",
++			  zbr->lnum, zbr->offs, err);
++		kfree(ino);
++		return ERR_PTR(err);
++	}
++
++	fscki = add_inode(c, fsckd, ino);
++	kfree(ino);
++	if (IS_ERR(fscki)) {
++		ubifs_err("error %ld while adding inode %lu node",
++			  PTR_ERR(fscki), inum);
++		return fscki;
++	}
++
++	return fscki;
++}
++
++/**
++ * check_leaf - check leaf node.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of the leaf node to check
++ * @priv: FS checking information
++ *
++ * This is a helper function for 'dbg_check_filesystem()' which is called for
++ * every single leaf node while walking the indexing tree. It checks that the
++ * leaf node referred from the indexing tree exists, has correct CRC, and does
++ * some other basic validation. This function is also responsible for building
++ * an RB-tree of inodes - it adds all inodes into the RB-tree. It also
++ * calculates reference count, size, etc for each inode in order to later
++ * compare them to the information stored inside the inodes and detect possible
++ * inconsistencies. Returns zero in case of success and a negative error code
++ * in case of failure.
++ */
++static int check_leaf(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++		      void *priv)
++{
++	ino_t inum;
++	void *node;
++	int err, type = key_type(c, &zbr->key);
++	struct fsck_inode *fscki;
++
++	if (zbr->len < UBIFS_CH_SZ) {
++		ubifs_err("bad leaf length %d (LEB %d:%d)",
++			  zbr->len, zbr->lnum, zbr->offs);
++		return -EINVAL;
++	}
++
++	node = kmalloc(zbr->len, GFP_NOFS);
++	if (!node)
++		return -ENOMEM;
++
++	err = ubifs_tnc_read_node(c, zbr, node);
++	if (err) {
++		ubifs_err("cannot read leaf node at LEB %d:%d, error %d",
++			  zbr->lnum, zbr->offs, err);
++		goto out_free;
++	}
++
++	/* If this is an inode node, add it to RB-tree of inodes */
++	if (type == UBIFS_INO_KEY) {
++		fscki = add_inode(c, priv, node);
++		if (IS_ERR(fscki)) {
++			err = PTR_ERR(fscki);
++			ubifs_err("error %d while adding inode node", err);
++			goto out_dump;
++		}
++		goto out;
++	}
++
++	if (type != UBIFS_DENT_KEY && type != UBIFS_XENT_KEY &&
++	    type != UBIFS_DATA_KEY) {
++		ubifs_err("unexpected node type %d at LEB %d:%d",
++			  type, zbr->lnum, zbr->offs);
++		err = -EINVAL;
++		goto out_free;
++	}
++
++	if (type == UBIFS_DATA_KEY) {
++		long long blk_offs;
++		struct ubifs_data_node *dn = node;
++
++		/*
++		 * Search the inode node this data node belongs to and insert
++		 * it to the RB-tree of inodes.
++		 */
++		inum = key_inum_flash(c, &dn->key);
++		fscki = read_add_inode(c, priv, inum);
++		if (IS_ERR(fscki)) {
++			err = PTR_ERR(fscki);
++			ubifs_err("error %d while processing data node and "
++				  "trying to find inode node %lu", err, inum);
++			goto out_dump;
++		}
++
++		/* Make sure the data node is within inode size */
++		blk_offs = (key_block_flash(c, &dn->key) << UBIFS_BLOCK_SHIFT);
++		blk_offs += le32_to_cpu(dn->size);
++		if (blk_offs > fscki->size) {
++			ubifs_err("data node at LEB %d:%d is not within inode "
++				  "size %lld", zbr->lnum, zbr->offs, fscki->size);
++			err = -EINVAL;
++			goto out_dump;
++		}
++	} else {
++		int nlen;
++		struct ubifs_dent_node *dent = node;
++		struct fsck_inode *fscki1;
++
++		err = ubifs_validate_entry(c, dent);
++		if (err)
++			goto out_dump;
++
++		/*
++		 * Search the inode node this entry refers to and the parent
++		 * inode node and insert them to the RB-tree of inodes.
++		 */
++		inum = le64_to_cpu(dent->inum);
++		fscki = read_add_inode(c, priv, inum);
++		if (IS_ERR(fscki)) {
++			err = PTR_ERR(fscki);
++			ubifs_err("error %d while processing entry node and "
++				  "trying to find inode node %lu", err, inum);
++			goto out_dump;
++		}
++
++		/* Count how many direntries or xentries refers this inode */
++		fscki->references += 1;
++
++		inum = key_inum_flash(c, &dent->key);
++		fscki1 = read_add_inode(c, priv, inum);
++		if (IS_ERR(fscki1)) {
++			err = PTR_ERR(fscki);
++			ubifs_err("error %d while processing entry node and "
++				  "trying to find parent inode node %lu",
++				  err, inum);
++			goto out_dump;
++		}
++
++		nlen = le16_to_cpu(dent->nlen);
++		if (type == UBIFS_XENT_KEY) {
++			fscki1->calc_cnt += 1;
++			fscki1->calc_sz += CALC_DENT_SIZE(nlen);
++			fscki1->calc_sz += CALC_XATTR_BYTES(fscki->size);
++		} else {
++			fscki1->calc_sz += CALC_DENT_SIZE(nlen);
++			if (dent->type == UBIFS_ITYPE_DIR)
++				fscki1->calc_cnt += 1;
++		}
++	}
++
++out:
++	kfree(node);
++	return 0;
++
++out_dump:
++	ubifs_msg("dump of node at LEB %d:%d", zbr->lnum, zbr->offs);
++	dbg_dump_node(c, node);
++out_free:
++	kfree(node);
++	return err;
++}
++
++/**
++ * free_inodes - free RB-tree of inodes.
++ * @fsckd: FS checking information
++ */
++static void free_inodes(struct fsck_data *fsckd)
++{
++	struct rb_node *this = fsckd->inodes.rb_node;
++	struct fsck_inode *fscki;
++
++	while (this) {
++		if (this->rb_left)
++			this = this->rb_left;
++		else if (this->rb_right)
++			this = this->rb_right;
++		else {
++			fscki = rb_entry(this, struct fsck_inode, rb);
++			this = rb_parent(this);
++			if (this) {
++				if (this->rb_left == &fscki->rb)
++					this->rb_left = NULL;
++				else
++					this->rb_right = NULL;
++			}
++			kfree(fscki);
++		}
++	}
++}
++
++/**
++ * check_inodes - checks all inodes.
++ * @c: UBIFS file-system description object
++ * @fsckd: FS checking information
++ *
++ * This is a helper function for 'dbg_check_filesystem()' which walks the
++ * RB-tree of inodes after the index scan has been finished, and checks that
++ * inode nlink, size, etc are correct. Returns zero if inodes are fine,
++ * %-EINVAL if not, and a negative error code in case of failure.
++ */
++static int check_inodes(struct ubifs_info *c, struct fsck_data *fsckd)
++{
++	int n, err;
++	union ubifs_key key;
++	struct ubifs_znode *znode;
++	struct ubifs_zbranch *zbr;
++	struct ubifs_ino_node *ino;
++	struct fsck_inode *fscki;
++	struct rb_node *this = rb_first(&fsckd->inodes);
++
++	while (this) {
++		fscki = rb_entry(this, struct fsck_inode, rb);
++		this = rb_next(this);
++
++		if (S_ISDIR(fscki->mode)) {
++			/*
++			 * Directories have to have exactly one reference (they
++			 * cannot have hardlinks), although root inode is an
++			 * exception.
++			 */
++			if (fscki->inum != UBIFS_ROOT_INO &&
++			    fscki->references != 1) {
++				ubifs_err("directory inode %lu has %d "
++					  "direntries which refer it, but "
++					  "should be 1", fscki->inum,
++					  fscki->references);
++				goto out_dump;
++			}
++			if (fscki->inum == UBIFS_ROOT_INO &&
++			    fscki->references != 0) {
++				ubifs_err("root inode %lu has non-zero (%d) "
++					  "direntries which refer it",
++					  fscki->inum, fscki->references);
++				goto out_dump;
++			}
++			if (fscki->calc_sz != fscki->size) {
++				ubifs_err("directory inode %lu size is %lld, "
++					  "but calculated size is %lld",
++					  fscki->inum, fscki->size,
++					  fscki->calc_sz);
++				goto out_dump;
++			}
++			if (fscki->calc_cnt != fscki->nlink) {
++				ubifs_err("directory inode %lu nlink is %d, "
++					  "but calculated nlink is %d",
++					  fscki->inum, fscki->nlink,
++					  fscki->calc_cnt);
++				goto out_dump;
++			}
++		} else {
++			if (fscki->references != fscki->nlink) {
++				ubifs_err("inode %lu nlink is %d, but "
++					  "calculated nlink is %d", fscki->inum,
++					  fscki->nlink, fscki->references);
++				goto out_dump;
++			}
++			if (fscki->xattr_sz != fscki->calc_sz) {
++				ubifs_err("inode %lu has xattr size %lld, but "
++					  "calculated size is %lld",
++					  fscki->inum, fscki->xattr_sz,
++					  fscki->calc_sz);
++				goto out_dump;
++			}
++			if (fscki->xattr_cnt != fscki->calc_cnt) {
++				ubifs_err("inode %lu has %d xattrs, but "
++					  "calculated count is %d", fscki->inum,
++					  fscki->xattr_cnt, fscki->calc_cnt);
++				goto out_dump;
++			}
++		}
++	}
++
++	return 0;
++
++out_dump:
++	/* Read the bad inode and dump it */
++	ino_key_init(c, &key, fscki->inum);
++	err = ubifs_lookup_level0(c, &key, &znode, &n);
++	if (!err) {
++		ubifs_err("inode %lu not found in index", fscki->inum);
++		return -ENOENT;
++	} else if (err < 0) {
++		ubifs_err("error %d while looking up inode %lu",
++			  err, fscki->inum);
++		return err;
++	}
++
++	zbr = &znode->zbranch[n];
++	ino = kmalloc(zbr->len, GFP_NOFS);
++	if (!ino)
++		return -ENOMEM;
++
++	err = ubifs_tnc_read_node(c, zbr, ino);
++	if (err) {
++		ubifs_err("cannot read inode node at LEB %d:%d, error %d",
++			  zbr->lnum, zbr->offs, err);
++		kfree(ino);
++		return err;
++	}
++
++	ubifs_msg("dump of the inode %lu sitting in LEB %d:%d",
++		  fscki->inum, zbr->lnum, zbr->offs);
++	dbg_dump_node(c, ino);
++	kfree(ino);
++	return -EINVAL;
++}
++
++/**
++ * dbg_check_filesystem - check the file-system.
++ * @c: UBIFS file-system description object
++ *
++ * This function checks the file system, namely:
++ * o makes sure that all leaf nodes exist and their CRCs are correct;
++ * o makes sure inode nlink, size, xattr size/count are correct (for all
++ *   inodes).
++ *
++ * The function reads whole indexing tree and all nodes, so it is pretty
++ * heavy-weight. Returns zero if the file-system is consistent, %-EINVAL if
++ * not, and a negative error code in case of failure.
++ */
++int dbg_check_filesystem(struct ubifs_info *c)
++{
++	int err;
++	struct fsck_data fsckd;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_FS))
++		return 0;
++
++	fsckd.inodes = RB_ROOT;
++	err = dbg_walk_index(c, check_leaf, NULL, &fsckd);
++	if (err)
++		goto out_free;
++
++	err = check_inodes(c, &fsckd);
++	if (err)
++		goto out_free;
++
++	free_inodes(&fsckd);
++	return 0;
++
++out_free:
++	ubifs_err("file-system check failed with error %d", err);
++	dump_stack();
++	free_inodes(&fsckd);
++	return err;
++}
++
++static int invocation_cnt;
++
++int dbg_force_in_the_gaps(void)
++{
++	if (!dbg_force_in_the_gaps_enabled)
++		return 0;
++	/* Force in-the-gaps every 8th commit */
++	return !((invocation_cnt++) & 0x7);
++}
++
++/* Failure mode for recovery testing */
++
++#define chance(n, d) (simple_rand() <= (n) * 32768LL / (d))
++
++struct failure_mode_info {
++	struct list_head list;
++	struct ubifs_info *c;
++};
++
++static LIST_HEAD(fmi_list);
++static DEFINE_SPINLOCK(fmi_lock);
++
++static unsigned int next;
 +
-+	bl = backlight_device_register("backlight", &sinfo->pdev->dev,
-+			sinfo, &atmel_lcdc_bl_ops);
-+	if (IS_ERR(sinfo->backlight)) {
-+		dev_err(&sinfo->pdev->dev, "error %ld on backlight register\n",
-+				PTR_ERR(bl));
++static int simple_rand(void)
++{
++	if (next == 0)
++		next = current->pid;
++	next = next * 1103515245 + 12345;
++	return (next >> 16) & 32767;
++}
++
++void dbg_failure_mode_registration(struct ubifs_info *c)
++{
++	struct failure_mode_info *fmi;
++
++	fmi = kmalloc(sizeof(struct failure_mode_info), GFP_NOFS);
++	if (!fmi) {
++		dbg_err("Failed to register failure mode - no memory");
 +		return;
 +	}
-+	sinfo->backlight = bl;
++	fmi->c = c;
++	spin_lock(&fmi_lock);
++	list_add_tail(&fmi->list, &fmi_list);
++	spin_unlock(&fmi_lock);
++}
++
++void dbg_failure_mode_deregistration(struct ubifs_info *c)
++{
++	struct failure_mode_info *fmi, *tmp;
++
++	spin_lock(&fmi_lock);
++	list_for_each_entry_safe(fmi, tmp, &fmi_list, list)
++		if (fmi->c == c) {
++			list_del(&fmi->list);
++			kfree(fmi);
++		}
++	spin_unlock(&fmi_lock);
++}
++
++static struct ubifs_info *dbg_find_info(struct ubi_volume_desc *desc)
++{
++	struct failure_mode_info *fmi;
++
++	spin_lock(&fmi_lock);
++	list_for_each_entry(fmi, &fmi_list, list)
++		if (fmi->c->ubi == desc) {
++			struct ubifs_info *c = fmi->c;
++
++			spin_unlock(&fmi_lock);
++			return c;
++		}
++	spin_unlock(&fmi_lock);
++	return NULL;
++}
++
++static int in_failure_mode(struct ubi_volume_desc *desc)
++{
++	struct ubifs_info *c = dbg_find_info(desc);
++
++	if (c)
++		return c->failure_mode;
++	return 0;
++}
++
++static int do_fail(struct ubi_volume_desc *desc, int lnum, int write)
++{
++	struct ubifs_info *c = dbg_find_info(desc);
++
++	if (!c || !dbg_failure_mode)
++		return 0;
++	if (c->failure_mode)
++		return 1;
++	if (!c->fail_cnt) {
++		/* First call - decide delay to failure */
++		if (chance(1, 2)) {
++			unsigned int delay = 1 << (simple_rand() >> 11);
++
++			if (chance(1, 2)) {
++				c->fail_delay = 1;
++				c->fail_timeout = jiffies +
++						  msecs_to_jiffies(delay);
++				dbg_rcvry("failing after %ums", delay);
++			} else {
++				c->fail_delay = 2;
++				c->fail_cnt_max = delay;
++				dbg_rcvry("failing after %u calls", delay);
++			}
++		}
++		c->fail_cnt += 1;
++	}
++	/* Determine if failure delay has expired */
++	if (c->fail_delay == 1) {
++		if (time_before(jiffies, c->fail_timeout))
++			return 0;
++	} else if (c->fail_delay == 2)
++		if (c->fail_cnt++ < c->fail_cnt_max)
++			return 0;
++	if (lnum == UBIFS_SB_LNUM) {
++		if (write) {
++			if (chance(1, 2))
++				return 0;
++		} else if (chance(19, 20))
++			return 0;
++		dbg_rcvry("failing in super block LEB %d", lnum);
++	} else if (lnum == UBIFS_MST_LNUM || lnum == UBIFS_MST_LNUM + 1) {
++		if (chance(19, 20))
++			return 0;
++		dbg_rcvry("failing in master LEB %d", lnum);
++	} else if (lnum >= UBIFS_LOG_LNUM && lnum <= c->log_last) {
++		if (write) {
++			if (chance(99, 100))
++				return 0;
++		} else if (chance(399, 400))
++			return 0;
++		dbg_rcvry("failing in log LEB %d", lnum);
++	} else if (lnum >= c->lpt_first && lnum <= c->lpt_last) {
++		if (write) {
++			if (chance(7, 8))
++				return 0;
++		} else if (chance(19, 20))
++			return 0;
++		dbg_rcvry("failing in LPT LEB %d", lnum);
++	} else if (lnum >= c->orph_first && lnum <= c->orph_last) {
++		if (write) {
++			if (chance(1, 2))
++				return 0;
++		} else if (chance(9, 10))
++			return 0;
++		dbg_rcvry("failing in orphan LEB %d", lnum);
++	} else if (lnum == c->ihead_lnum) {
++		if (chance(99, 100))
++			return 0;
++		dbg_rcvry("failing in index head LEB %d", lnum);
++	} else if (c->jheads && lnum == c->jheads[GCHD].wbuf.lnum) {
++		if (chance(9, 10))
++			return 0;
++		dbg_rcvry("failing in GC head LEB %d", lnum);
++	} else if (write && !RB_EMPTY_ROOT(&c->buds) &&
++		   !ubifs_search_bud(c, lnum)) {
++		if (chance(19, 20))
++			return 0;
++		dbg_rcvry("failing in non-bud LEB %d", lnum);
++	} else if (c->cmt_state == COMMIT_RUNNING_BACKGROUND ||
++		   c->cmt_state == COMMIT_RUNNING_REQUIRED) {
++		if (chance(999, 1000))
++			return 0;
++		dbg_rcvry("failing in bud LEB %d commit running", lnum);
++	} else {
++		if (chance(9999, 10000))
++			return 0;
++		dbg_rcvry("failing in bud LEB %d commit not running", lnum);
++	}
++	ubifs_err("*** SETTING FAILURE MODE ON (LEB %d) ***", lnum);
++	c->failure_mode = 1;
++	dump_stack();
++	return 1;
++}
++
++static void cut_data(const void *buf, int len)
++{
++	int flen, i;
++	unsigned char *p = (void *)buf;
++
++	flen = (len * (long long)simple_rand()) >> 15;
++	for (i = flen; i < len; i++)
++		p[i] = 0xff;
++}
++
++int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
++		 int len, int check)
++{
++	if (in_failure_mode(desc))
++		return -EIO;
++	return ubi_leb_read(desc, lnum, buf, offset, len, check);
++}
++
++int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
++		  int offset, int len, int dtype)
++{
++	int err;
 +
-+	bl->props.power = FB_BLANK_UNBLANK;
-+	bl->props.fb_blank = FB_BLANK_UNBLANK;
-+	bl->props.max_brightness = 0xff;
-+	bl->props.brightness = atmel_bl_get_brightness(bl);
++	if (in_failure_mode(desc))
++		return -EIO;
++	if (do_fail(desc, lnum, 1))
++		cut_data(buf, len);
++	err = ubi_leb_write(desc, lnum, buf, offset, len, dtype);
++	if (err)
++		return err;
++	if (in_failure_mode(desc))
++		return -EIO;
++	return 0;
 +}
 +
-+static void exit_backlight(struct atmel_lcdfb_info *sinfo)
++int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
++		   int len, int dtype)
 +{
-+	if (sinfo->backlight)
-+		backlight_device_unregister(sinfo->backlight);
++	int err;
++
++	if (do_fail(desc, lnum, 1))
++		return -EIO;
++	err = ubi_leb_change(desc, lnum, buf, len, dtype);
++	if (err)
++		return err;
++	if (do_fail(desc, lnum, 1))
++		return -EIO;
++	return 0;
 +}
 +
++int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum)
++{
++	int err;
++
++	if (do_fail(desc, lnum, 0))
++		return -EIO;
++	err = ubi_leb_erase(desc, lnum);
++	if (err)
++		return err;
++	if (do_fail(desc, lnum, 0))
++		return -EIO;
++	return 0;
++}
++
++int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum)
++{
++	int err;
++
++	if (do_fail(desc, lnum, 0))
++		return -EIO;
++	err = ubi_leb_unmap(desc, lnum);
++	if (err)
++		return err;
++	if (do_fail(desc, lnum, 0))
++		return -EIO;
++	return 0;
++}
++
++int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum)
++{
++	if (in_failure_mode(desc))
++		return -EIO;
++	return ubi_is_mapped(desc, lnum);
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/debug.h avr32-2.6/fs/ubifs/debug.h
+--- linux-2.6.25.6/fs/ubifs/debug.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/debug.h	2008-06-12 15:09:45.315815846 +0200
+@@ -0,0 +1,396 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++#ifndef __UBIFS_DEBUG_H__
++#define __UBIFS_DEBUG_H__
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++#define UBIFS_DBG(op) op
++
++#define ubifs_assert(expr)  do {                                               \
++	if (unlikely(!(expr))) {                                               \
++		printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
++		       __func__, __LINE__, current->pid);                      \
++		dbg_dump_stack();                                              \
++	}                                                                      \
++} while (0)
++
++#define ubifs_assert_cmt_locked(c) do {                                        \
++	if (unlikely(down_write_trylock(&(c)->commit_sem))) {                  \
++		up_write(&(c)->commit_sem);                                    \
++		printk(KERN_CRIT "commit lock is not locked!\n");              \
++		ubifs_assert(0);                                               \
++	}                                                                      \
++} while (0)
++
++#define dbg_dump_stack() do {                                                  \
++	if (!dbg_failure_mode)                                                 \
++		dump_stack();                                                  \
++} while (0)
++
++/* Generic debugging messages */
++#define dbg_msg(fmt, ...) do {                                                 \
++	spin_lock(&dbg_lock);                                                  \
++	printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", current->pid,   \
++	       __func__, ##__VA_ARGS__);                                       \
++	spin_unlock(&dbg_lock);                                                \
++} while (0)
++
++#define dbg_do_msg(typ, fmt, ...) do {                                         \
++	if (ubifs_msg_flags & typ)                                             \
++		dbg_msg(fmt, ##__VA_ARGS__);                                   \
++} while (0)
++
++#define dbg_err(fmt, ...) do {                                                 \
++	spin_lock(&dbg_lock);                                                  \
++	ubifs_err(fmt, ##__VA_ARGS__);                                         \
++	spin_unlock(&dbg_lock);                                                \
++} while (0)
++
++const char *dbg_key_str0(const struct ubifs_info *c,
++			 const union ubifs_key *key);
++const char *dbg_key_str1(const struct ubifs_info *c,
++			 const union ubifs_key *key);
++
++/*
++ * DBGKEY macros require dbg_lock to be held, which it is in the dbg message
++ * macros.
++ */
++#define DBGKEY(key) dbg_key_str0(c, (key))
++#define DBGKEY1(key) dbg_key_str1(c, (key))
++
++/* General messages */
++#define dbg_gen(fmt, ...)        dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__)
++
++/* Additional journal messages */
++#define dbg_jnl(fmt, ...)        dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__)
++
++/* Additional TNC messages */
++#define dbg_tnc(fmt, ...)        dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__)
++
++/* Additional lprops messages */
++#define dbg_lp(fmt, ...)         dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__)
++
++/* Additional LEB find messages */
++#define dbg_find(fmt, ...)       dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__)
++
++/* Additional mount messages */
++#define dbg_mnt(fmt, ...)        dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__)
++
++/* Additional I/O messages */
++#define dbg_io(fmt, ...)         dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__)
++
++/* Additional commit messages */
++#define dbg_cmt(fmt, ...)        dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__)
++
++/* Additional budgeting messages */
++#define dbg_budg(fmt, ...)       dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__)
++
++/* Additional log messages */
++#define dbg_log(fmt, ...)        dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__)
++
++/* Additional gc messages */
++#define dbg_gc(fmt, ...)         dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__)
++
++/* Additional scan messages */
++#define dbg_scan(fmt, ...)       dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__)
++
++/* Additional recovery messages */
++#define dbg_rcvry(fmt, ...)      dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__)
++
++/*
++ * Debugging message type flags (must match msg_type_names in debug.c).
++ *
++ * UBIFS_MSG_GEN: general messages
++ * UBIFS_MSG_JNL: journal messages
++ * UBIFS_MSG_MNT: mount messages
++ * UBIFS_MSG_CMT: commit messages
++ * UBIFS_MSG_FIND: LEB find messages
++ * UBIFS_MSG_BUDG: budgeting messages
++ * UBIFS_MSG_GC: garbage collection messages
++ * UBIFS_MSG_TNC: TNC messages
++ * UBIFS_MSG_LP: lprops messages
++ * UBIFS_MSG_IO: I/O messages
++ * UBIFS_MSG_LOG: log messages
++ * UBIFS_MSG_SCAN: scan messages
++ * UBIFS_MSG_RCVRY: recovery messages
++ */
++enum {
++	UBIFS_MSG_GEN   = 0x1,
++	UBIFS_MSG_JNL   = 0x2,
++	UBIFS_MSG_MNT   = 0x4,
++	UBIFS_MSG_CMT   = 0x8,
++	UBIFS_MSG_FIND  = 0x10,
++	UBIFS_MSG_BUDG  = 0x20,
++	UBIFS_MSG_GC    = 0x40,
++	UBIFS_MSG_TNC   = 0x80,
++	UBIFS_MSG_LP    = 0x100,
++	UBIFS_MSG_IO    = 0x200,
++	UBIFS_MSG_LOG   = 0x400,
++	UBIFS_MSG_SCAN  = 0x800,
++	UBIFS_MSG_RCVRY = 0x1000,
++};
++
++/* Debugging message type flags for each default debug message level */
++#define UBIFS_MSG_LVL_0 0
++#define UBIFS_MSG_LVL_1 0x1
++#define UBIFS_MSG_LVL_2 0x7f
++#define UBIFS_MSG_LVL_3 0xffff
++
++/*
++ * Debugging check flags (must match chk_names in debug.c).
++ *
++ * UBIFS_CHK_GEN: general checks
++ * UBIFS_CHK_TNC: check TNC
++ * UBIFS_CHK_IDX_SZ: check index size
++ * UBIFS_CHK_ORPH: check orphans
++ * UBIFS_CHK_OLD_IDX: check the old index
++ * UBIFS_CHK_LPROPS: check lprops
++ * UBIFS_CHK_FS: check the file-system
++ */
++enum {
++	UBIFS_CHK_GEN     = 0x1,
++	UBIFS_CHK_TNC     = 0x2,
++	UBIFS_CHK_IDX_SZ  = 0x4,
++	UBIFS_CHK_ORPH    = 0x8,
++	UBIFS_CHK_OLD_IDX = 0x10,
++	UBIFS_CHK_LPROPS  = 0x20,
++	UBIFS_CHK_FS      = 0x40,
++};
++
++/*
++ * Special testing flags (must match tst_names in debug.c).
++ *
++ * UBIFS_TST_FORCE_IN_THE_GAPS: force the use of in-the-gaps method
++ * UBIFS_TST_RCVRY: failure mode for recovery testing
++ */
++enum {
++	UBIFS_TST_FORCE_IN_THE_GAPS = 0x2,
++	UBIFS_TST_RCVRY             = 0x4,
++};
++
++#if CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 1
++#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_1
++#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 2
++#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_2
++#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 3
++#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_3
 +#else
++#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_0
++#endif
 +
-+static void init_backlight(struct atmel_lcdfb_info *sinfo)
++#ifdef CONFIG_UBIFS_FS_DEBUG_CHKS
++#define UBIFS_CHK_FLAGS_DEFAULT 0xffffffff
++#else
++#define UBIFS_CHK_FLAGS_DEFAULT 0
++#endif
++
++extern spinlock_t dbg_lock;
++
++extern unsigned int ubifs_msg_flags;
++extern unsigned int ubifs_chk_flags;
++extern unsigned int ubifs_tst_flags;
++
++/* Dump functions */
++
++const char *dbg_ntype(int type);
++const char *dbg_cstate(int cmt_state);
++const char *dbg_get_key_dump(const struct ubifs_info *c,
++			     const union ubifs_key *key);
++void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode);
++void dbg_dump_node(const struct ubifs_info *c, const void *node);
++void dbg_dump_budget_req(const struct ubifs_budget_req *req);
++void dbg_dump_lstats(const struct ubifs_lp_stats *lst);
++void dbg_dump_budg(struct ubifs_info *c);
++void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp);
++void dbg_dump_lprops(struct ubifs_info *c);
++void dbg_dump_leb(const struct ubifs_info *c, int lnum);
++void dbg_dump_znode(const struct ubifs_info *c,
++		    const struct ubifs_znode *znode);
++void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat);
++void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
++		    struct ubifs_nnode *parent, int iip);
++void dbg_dump_tnc(struct ubifs_info *c);
++void dbg_dump_index(struct ubifs_info *c);
++
++/* Checking helper functions */
++
++typedef int (*dbg_leaf_callback)(struct ubifs_info *c,
++				 struct ubifs_zbranch *zbr, void *priv);
++typedef int (*dbg_znode_callback)(struct ubifs_info *c,
++				  struct ubifs_znode *znode, void *priv);
++
++int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
++		   dbg_znode_callback znode_cb, void *priv);
++
++/* Checking functions */
++
++int dbg_check_lprops(struct ubifs_info *c);
++
++int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot);
++int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot);
++
++int dbg_check_cats(struct ubifs_info *c);
++
++int dbg_check_ltab(struct ubifs_info *c);
++
++int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir);
++
++int dbg_check_tnc(struct ubifs_info *c, int extra);
++
++int dbg_check_idx_size(struct ubifs_info *c, long long idx_size);
++
++int dbg_check_filesystem(struct ubifs_info *c);
++
++void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat,
++		    int add_pos);
++
++int dbg_check_lprops(struct ubifs_info *c);
++int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode,
++			int row, int col);
++
++/* Force the use of in-the-gaps method for testing */
++
++#define dbg_force_in_the_gaps_enabled \
++	(ubifs_tst_flags & UBIFS_TST_FORCE_IN_THE_GAPS)
++
++int dbg_force_in_the_gaps(void);
++
++/* Failure mode for recovery testing */
++
++#define dbg_failure_mode (ubifs_tst_flags & UBIFS_TST_RCVRY)
++
++void dbg_failure_mode_registration(struct ubifs_info *c);
++void dbg_failure_mode_deregistration(struct ubifs_info *c);
++
++#ifndef UBIFS_DBG_PRESERVE_UBI
++
++#define ubi_leb_read   dbg_leb_read
++#define ubi_leb_write  dbg_leb_write
++#define ubi_leb_change dbg_leb_change
++#define ubi_leb_erase  dbg_leb_erase
++#define ubi_leb_unmap  dbg_leb_unmap
++#define ubi_is_mapped  dbg_is_mapped
++
++#endif
++
++int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
++		 int len, int check);
++int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
++		  int offset, int len, int dtype);
++int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
++		   int len, int dtype);
++int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum);
++int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum);
++int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum);
++
++static inline int dbg_read(struct ubi_volume_desc *desc, int lnum, char *buf,
++			   int offset, int len)
 +{
-+	dev_warn(&sinfo->pdev->dev, "backlight control is not available\n");
++	return dbg_leb_read(desc, lnum, buf, offset, len, 0);
 +}
 +
-+static void exit_backlight(struct atmel_lcdfb_info *sinfo)
++static inline int dbg_write(struct ubi_volume_desc *desc, int lnum,
++			    const void *buf, int offset, int len)
 +{
++	return dbg_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN);
 +}
 +
++static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
++				    const void *buf, int len)
++{
++	return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
++}
++
++#else /* !CONFIG_UBIFS_FS_DEBUG */
++
++#define UBIFS_DBG(op)
++#define ubifs_assert(expr)                         ({})
++#define ubifs_assert_cmt_locked(c)
++#define dbg_dump_stack()
++#define dbg_err(fmt, ...)                          ({})
++#define dbg_msg(fmt, ...)                          ({})
++#define dbg_key(c, key, fmt, ...)                  ({})
++
++#define dbg_gen(fmt, ...)                          ({})
++#define dbg_jnl(fmt, ...)                          ({})
++#define dbg_tnc(fmt, ...)                          ({})
++#define dbg_lp(fmt, ...)                           ({})
++#define dbg_find(fmt, ...)                         ({})
++#define dbg_mnt(fmt, ...)                          ({})
++#define dbg_io(fmt, ...)                           ({})
++#define dbg_cmt(fmt, ...)                          ({})
++#define dbg_budg(fmt, ...)                         ({})
++#define dbg_log(fmt, ...)                          ({})
++#define dbg_gc(fmt, ...)                           ({})
++#define dbg_scan(fmt, ...)                         ({})
++#define dbg_rcvry(fmt, ...)                        ({})
++
++#define dbg_ntype(type)                            ""
++#define dbg_cstate(cmt_state)                      ""
++#define dbg_get_key_dump(c, key)                   ({})
++#define dbg_dump_inode(c, inode)                   ({})
++#define dbg_dump_node(c, node)                     ({})
++#define dbg_dump_budget_req(req)                   ({})
++#define dbg_dump_lstats(lst)                       ({})
++#define dbg_dump_budg(c)                           ({})
++#define dbg_dump_lprop(c, lp)                      ({})
++#define dbg_dump_lprops(c)                         ({})
++#define dbg_dump_leb(c, lnum)                      ({})
++#define dbg_dump_znode(c, znode)                   ({})
++#define dbg_dump_heap(c, heap, cat)                ({})
++#define dbg_dump_pnode(c, pnode, parent, iip)      ({})
++#define dbg_dump_tnc(c)                            ({})
++#define dbg_dump_index(c)                          ({})
++
++#define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0
++
++#define dbg_old_index_check_init(c, zroot)         0
++#define dbg_check_old_index(c, zroot)              0
++
++#define dbg_check_cats(c)                          0
++
++#define dbg_check_ltab(c)                          0
++
++#define dbg_check_dir_size(c, dir)                 0
++
++#define dbg_check_tnc(c, x)                        0
++
++#define dbg_check_idx_size(c, idx_size)            0
++#define dbg_check_filesystem(c)                    0
++
++#define dbg_check_heap(c, heap, cat, add_pos)      ({})
++
++#define dbg_check_lprops(c)                        0
++#define dbg_check_lpt_nodes(c, cnode, row, col)    0
++
++#define dbg_force_in_the_gaps_enabled              0
++#define dbg_force_in_the_gaps()                    0
++
++#define dbg_failure_mode                           0
++#define dbg_failure_mode_registration(c)           ({})
++#define dbg_failure_mode_deregistration(c)         ({})
++
++#endif /* !CONFIG_UBIFS_FS_DEBUG */
++
++#endif /* !__UBIFS_DEBUG_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/dir.c avr32-2.6/fs/ubifs/dir.c
+--- linux-2.6.25.6/fs/ubifs/dir.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/dir.c	2008-06-12 15:09:45.364399968 +0200
+@@ -0,0 +1,1017 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ * Copyright (C) 2006, 2007 University of Szeged, Hungary
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ *          Zoltan Sogor
++ */
++
++/*
++ * This file implements directory operations.
++ *
++ * All FS operations in this file allocate budget before writing anything to the
++ * media. If they fail to allocate it, the error is returned. The only
++ * exceptions are 'ubifs_unlink()' and 'ubifs_rmdir()' which keep working even
++ * if they unable to allocate the budget, because deletion %-ENOSPC failure is
++ * not what users are usually ready to get. UBIFS budgeting subsystem has some
++ * space reserved for these purposes.
++ *
++ * All operations in this file change the parent inode, e.g., 'ubifs_link()'
++ * changes ctime and nlink of the parent inode. The parent inode is written to
++ * the media straight away - it is not marked as dirty and there is no
++ * write-back for it. This was done to simplify file-system recovery which
++ * would otherwise be very difficult to do. So instead of marking the parent
++ * inode dirty, the operations mark it clean.
++ */
++
++#include "ubifs.h"
++
++/*
++ * Provide backing_dev_info in order to disable readahead. For UBIFS, I/O is
++ * not deferred, it is done immediately in readpage, which means the user would
++ * have to wait not just for their own I/O but the readahead I/O as well i.e.
++ * completely pointless.
++ */
++struct backing_dev_info ubifs_backing_dev_info = {
++	.ra_pages	= 0, /* Set to zero to disable readahead */
++	.state		= 0,
++	.capabilities	= BDI_CAP_MAP_COPY,
++	.unplug_io_fn	= default_unplug_io_fn,
++};
++
++/**
++ * inherit_flags - inherit flags of the parent inode.
++ * @dir: parent inode
++ * @mode: new inode mode flags
++ *
++ * This is a helper function for 'ubifs_new_inode()' which inherits flag of the
++ * parent directory inode @dir. UBIFS inodes inherit the following flags:
++ * o %UBIFS_COMPR_FL, which is useful to switch compression on/of on
++ *   sub-directory basis;
++ * o %UBIFS_SYNC_FL - useful for the same reasons;
++ * o %UBIFS_DIRSYNC_FL - similar, but relevant only to directories.
++ *
++ * This function returns the inherited flags.
++ */
++static int inherit_flags(const struct inode *dir, int mode)
++{
++	int flags;
++	const struct ubifs_inode *ui = ubifs_inode(dir);
++
++	if (!S_ISDIR(dir->i_mode))
++		/*
++		 * The parent is not a directory, which means that an extended
++		 * attribute inode is being created. No flags.
++		 */
++		return 0;
++
++	flags = ui->flags & (UBIFS_COMPR_FL | UBIFS_SYNC_FL | UBIFS_DIRSYNC_FL);
++	if (!S_ISDIR(mode))
++		/* The "DIRSYNC" flag only applies to directories */
++		flags &= ~UBIFS_DIRSYNC_FL;
++
++	return flags;
++}
++
++/**
++ * ubifs_new_inode - allocate new UBIFS inode object.
++ * @c: UBIFS file-system description object
++ * @dir: parent directory inode
++ * @mode: inode mode flags
++ *
++ * This function finds an unused inode number, allocates new inode and
++ * initializes it. Returns new inode in case of success and an error code in
++ * case of failure.
++ */
++struct inode *ubifs_new_inode(struct ubifs_info *c, const struct inode *dir,
++			      int mode)
++{
++	struct inode *inode;
++	struct ubifs_inode *ui;
++
++	inode = new_inode(c->vfs_sb);
++	if (!inode)
++		return ERR_PTR(-ENOMEM);
++
++	/*
++	 * Set 'S_NOCMTIME' to prevent VFS form updating [mc]time of inodes and
++	 * marking them dirty in file write path (see 'file_update_time()').
++	 * UBIFS has to fully control "clean <-> dirty" transitions of inodes
++	 * to make budgeting work.
++	 */
++	inode->i_flags |= (S_NOCMTIME);
++
++	inode->i_uid = current->fsuid;
++	if (dir->i_mode & S_ISGID) {
++		inode->i_gid = dir->i_gid;
++		if (S_ISDIR(mode))
++			mode |= S_ISGID;
++	} else
++		inode->i_gid = current->fsgid;
++	inode->i_mode = mode;
++	inode->i_mtime = inode->i_atime = inode->i_ctime =
++			 ubifs_current_time(inode);
++	inode->i_mapping->nrpages = 0;
++	/* Disable readahead */
++	inode->i_mapping->backing_dev_info = &ubifs_backing_dev_info;
++
++	switch (mode & S_IFMT) {
++	case S_IFREG:
++		inode->i_mapping->a_ops = &ubifs_file_address_operations;
++		inode->i_op = &ubifs_file_inode_operations;
++		inode->i_fop = &ubifs_file_operations;
++		break;
++	case S_IFDIR:
++		inode->i_op  = &ubifs_dir_inode_operations;
++		inode->i_fop = &ubifs_dir_operations;
++		inode->i_size = UBIFS_INO_NODE_SZ;
++		break;
++	case S_IFLNK:
++		inode->i_op = &ubifs_symlink_inode_operations;
++		break;
++	case S_IFSOCK:
++	case S_IFIFO:
++	case S_IFBLK:
++	case S_IFCHR:
++		inode->i_op  = &ubifs_file_inode_operations;
++		break;
++	default:
++		BUG();
++	}
++
++	ui = ubifs_inode(inode);
++	ui->flags = inherit_flags(dir, mode);
++	ubifs_set_inode_flags(inode);
++
++	if (S_ISREG(mode))
++		ui->compr_type = c->default_compr;
++	else
++		ui->compr_type = UBIFS_COMPR_NONE;
++
++	spin_lock(&c->cnt_lock);
++	/* Inode number overflow is currently not supported */
++	if (c->highest_inum >= INUM_WARN_WATERMARK) {
++		if (c->highest_inum >= INUM_WATERMARK) {
++			spin_unlock(&c->cnt_lock);
++			ubifs_err("out of inode numbers");
++			make_bad_inode(inode);
++			iput(inode);
++			return ERR_PTR(-EINVAL);
++		}
++		ubifs_warn("running out of inode numbers (current %lu, max %d)",
++			   c->highest_inum, INUM_WATERMARK);
++	}
++
++	inode->i_ino = ++c->highest_inum;
++	inode->i_generation = ++c->vfs_gen;
++	/*
++	 * The creation sequence number remains with this inode for its
++	 * lifetime. All nodes for this inode have a greater sequence number,
++	 * and so it is possible to distinguish obsolete nodes belonging to a
++	 * previous incarnation of the same inode number - for example, for the
++	 * purpose of rebuilding the index.
++	 */
++	ui->creat_sqnum = ++c->max_sqnum;
++	spin_unlock(&c->cnt_lock);
++
++	return inode;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++static int dbg_check_name(struct ubifs_dent_node *dent, struct qstr *nm)
++{
++	if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
++		return 0;
++	if (le16_to_cpu(dent->nlen) != nm->len)
++		return -EINVAL;
++	if (memcmp(dent->name, nm->name, nm->len))
++		return -EINVAL;
++	return 0;
++}
++
++#else
++
++#define dbg_check_name(dent, nm) 0
++
 +#endif
 +
-+static void init_contrast(struct atmel_lcdfb_info *sinfo)
++static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,
++				   struct nameidata *nd)
 +{
-+	/* have some default contrast/backlight settings */
-+	lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR, contrast_ctr);
-+	lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_VAL, ATMEL_LCDC_CVAL_DEFAULT);
++	int err;
++	union ubifs_key key;
++	struct inode *inode = NULL;
++	struct ubifs_dent_node *dent;
++	struct ubifs_info *c = dir->i_sb->s_fs_info;
++
++	dbg_gen("'%.*s' in dir ino %lu",
++		dentry->d_name.len, dentry->d_name.name, dir->i_ino);
++
++	if (dentry->d_name.len > UBIFS_MAX_NLEN)
++		return ERR_PTR(-ENAMETOOLONG);
++
++	dent = kmalloc(UBIFS_MAX_DENT_NODE_SZ, GFP_NOFS);
++	if (!dent)
++		return ERR_PTR(-ENOMEM);
 +
-+	if (sinfo->lcdcon_is_backlight)
-+		init_backlight(sinfo);
++	dent_key_init(c, &key, dir->i_ino, &dentry->d_name);
++
++	err = ubifs_tnc_lookup_nm(c, &key, dent, &dentry->d_name);
++	if (err) {
++		if (err == -ENOENT) {
++			dbg_gen("not found");
++			goto done;
++		}
++		goto out;
++	}
++
++	if (dbg_check_name(dent, &dentry->d_name)) {
++		err = -EINVAL;
++		goto out;
++	}
++
++	inode = ubifs_iget(dir->i_sb, le64_to_cpu(dent->inum));
++	if (IS_ERR(inode)) {
++		/*
++		 * This should not happen. Probably the file-system needs
++		 * checking.
++		 */
++		err = PTR_ERR(inode);
++		ubifs_err("dead directory entry '%.*s', error %d",
++			  dentry->d_name.len, dentry->d_name.name, err);
++		ubifs_ro_mode(c, err);
++		goto out;
++	}
++
++done:
++	kfree(dent);
++	/*
++	 * Note, d_splice_alias() would be required instead if we supported
++	 * NFS.
++	 */
++	d_add(dentry, inode);
++	return NULL;
++
++out:
++	kfree(dent);
++	return ERR_PTR(err);
 +}
 +
- 
- static struct fb_fix_screeninfo atmel_lcdfb_fix __initdata = {
- 	.type		= FB_TYPE_PACKED_PIXELS,
- 	.visual		= FB_VISUAL_TRUECOLOR,
- 	.xpanstep	= 0,
--	.ypanstep	= 0,
-+	.ypanstep	= 1,
- 	.ywrapstep	= 0,
- 	.accel		= FB_ACCEL_NONE,
- };
-@@ -148,6 +252,8 @@
- 		return -ENOMEM;
- 	}
- 
-+	memset(info->screen_base, 0, info->fix.smem_len);
++static int ubifs_create(struct inode *dir, struct dentry *dentry, int mode,
++			struct nameidata *nd)
++{
++	struct inode *inode;
++	struct ubifs_info *c = dir->i_sb->s_fs_info;
++	struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1 };
++	int err, sz_change = CALC_DENT_SIZE(dentry->d_name.len);
 +
- 	return 0;
- }
- 
-@@ -203,6 +309,26 @@
- 	var->transp.offset = var->transp.length = 0;
- 	var->xoffset = var->yoffset = 0;
- 
-+	/* Saturate vertical and horizontal timings at maximum values */
-+	var->vsync_len = min_t(u32, var->vsync_len,
-+			(ATMEL_LCDC_VPW >> ATMEL_LCDC_VPW_OFFSET) + 1);
-+	var->upper_margin = min_t(u32, var->upper_margin,
-+			ATMEL_LCDC_VBP >> ATMEL_LCDC_VBP_OFFSET);
-+	var->lower_margin = min_t(u32, var->lower_margin,
-+			ATMEL_LCDC_VFP);
-+	var->right_margin = min_t(u32, var->right_margin,
-+			(ATMEL_LCDC_HFP >> ATMEL_LCDC_HFP_OFFSET) + 1);
-+	var->hsync_len = min_t(u32, var->hsync_len,
-+			(ATMEL_LCDC_HPW >> ATMEL_LCDC_HPW_OFFSET) + 1);
-+	var->left_margin = min_t(u32, var->left_margin,
-+			ATMEL_LCDC_HBP + 1);
-+
-+	/* Some parameters can't be zero */
-+	var->vsync_len = max_t(u32, var->vsync_len, 1);
-+	var->right_margin = max_t(u32, var->right_margin, 1);
-+	var->hsync_len = max_t(u32, var->hsync_len, 1);
-+	var->left_margin = max_t(u32, var->left_margin, 1);
-+
- 	switch (var->bits_per_pixel) {
- 	case 1:
- 	case 2:
-@@ -370,10 +496,6 @@
- 	/* Disable all interrupts */
- 	lcdc_writel(sinfo, ATMEL_LCDC_IDR, ~0UL);
- 
--	/* Set contrast */
--	value = ATMEL_LCDC_PS_DIV8 | ATMEL_LCDC_POL_POSITIVE | ATMEL_LCDC_ENA_PWMENABLE;
--	lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR, value);
--	lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_VAL, ATMEL_LCDC_CVAL_DEFAULT);
- 	/* ...wait for DMA engine to become idle... */
- 	while (lcdc_readl(sinfo, ATMEL_LCDC_DMACON) & ATMEL_LCDC_DMABUSY)
- 		msleep(10);
-@@ -516,7 +638,6 @@
- 	struct fb_info *info = sinfo->info;
- 	int ret = 0;
- 
--	memset_io(info->screen_base, 0, info->fix.smem_len);
- 	info->var.activate |= FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW;
- 
- 	dev_info(info->device,
-@@ -577,6 +698,7 @@
- 		sinfo->default_monspecs = pdata_sinfo->default_monspecs;
- 		sinfo->atmel_lcdfb_power_control = pdata_sinfo->atmel_lcdfb_power_control;
- 		sinfo->guard_time = pdata_sinfo->guard_time;
-+		sinfo->lcdcon_is_backlight = pdata_sinfo->lcdcon_is_backlight;
- 	} else {
- 		dev_err(dev, "cannot get default configuration\n");
- 		goto free_info;
-@@ -645,6 +767,11 @@
- 		info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
- 		if (!info->screen_base)
- 			goto release_intmem;
++	dbg_gen("dent '%.*s', mode %#x in dir ino %lu",
++		dentry->d_name.len, dentry->d_name.name, mode, dir->i_ino);
++
++	inode = ubifs_new_inode(c, dir, mode);
++	if (IS_ERR(inode))
++		return PTR_ERR(inode);
++
++	err = ubifs_budget_inode_op(c, dir, &req);
++	if (err)
++		goto out;
++
++	dir->i_size += sz_change;
++
++	err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++			       IS_DIRSYNC(dir), 0);
++	if (err)
++		goto out_budg;
++
++	insert_inode_hash(inode);
++	d_instantiate(dentry, inode);
++	ubifs_release_ino_clean(c, dir, &req);
++	return 0;
++
++out_budg:
++	dir->i_size -= sz_change;
++	ubifs_cancel_ino_op(c, dir, &req);
++	ubifs_err("cannot create regular file, error %d", err);
++out:
++	make_bad_inode(inode);
++	iput(inode);
++	return err;
++}
++
++/**
++ * vfs_dent_type - get VFS directory entry type.
++ * @type: UBIFS directory entry type
++ *
++ * This function converts UBIFS directory entry type into VFS directory entry
++ * type.
++ */
++static unsigned int vfs_dent_type(uint8_t type)
++{
++	switch (type) {
++	case UBIFS_ITYPE_REG:
++		return DT_REG;
++	case UBIFS_ITYPE_DIR:
++		return DT_DIR;
++	case UBIFS_ITYPE_LNK:
++		return DT_LNK;
++	case UBIFS_ITYPE_BLK:
++		return DT_BLK;
++	case UBIFS_ITYPE_CHR:
++		return DT_CHR;
++	case UBIFS_ITYPE_FIFO:
++		return DT_FIFO;
++	case UBIFS_ITYPE_SOCK:
++		return DT_SOCK;
++	default:
++		BUG();
++	}
++	return 0;
++}
 +
++/*
++ * The classical Unix view for directory is that it is a linear array of
++ * (name, inode number) entries. Linux/VFS assumes this model as well.
++ * Particularly, 'readdir()' call wants us to return a directory entry offset
++ * which later may be used to continue 'readdir()'ing the directory or to
++ * 'seek()' to that specific direntry. Obviously UBIFS does not really fit this
++ * model because directory entries are identified by keys, which may collide.
++ *
++ * UBIFS uses directory entry hash value for directory offsets, so
++ * 'seekdir()'/'telldir()' may not always work because of possible key
++ * collisions. But UBIFS guarantees that consecutive 'readdir()' calls work
++ * properly by means of saving full directory entry name in the private field
++ * of the file description object.
++ *
++ * This means that UBIFS cannot support NFS which requires full
++ * 'seekdir()'/'telldir()' support.
++ */
++static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
++{
++	int err, over = 0;
++	struct qstr nm;
++	union ubifs_key key;
++	struct ubifs_dent_node *dent;
++	struct inode *dir = file->f_path.dentry->d_inode;
++	struct ubifs_info *c = dir->i_sb->s_fs_info;
++
++	dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, file->f_pos);
++
++	if (file->f_pos > UBIFS_S_KEY_HASH_MASK || file->f_pos == 2)
 +		/*
-+		 * Don't clear the framebuffer -- someone may have set
-+		 * up a splash image.
++		 * The directory was seek'ed to a senseless position or there
++		 * are no more entries.
 +		 */
- 	} else {
- 		/* alocate memory buffer */
- 		ret = atmel_lcdfb_alloc_video_memory(sinfo);
-@@ -670,6 +797,9 @@
- 		goto release_mem;
- 	}
- 
-+	/* Initialize PWM for contrast or backlight ("off") */
-+	init_contrast(sinfo);
-+
- 	/* interrupt */
- 	ret = request_irq(sinfo->irq_base, atmel_lcdfb_interrupt, 0, pdev->name, info);
- 	if (ret) {
-@@ -721,6 +851,7 @@
- unregister_irqs:
- 	free_irq(sinfo->irq_base, info);
- unmap_mmio:
-+	exit_backlight(sinfo);
- 	iounmap(sinfo->mmio);
- release_mem:
-  	release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
-@@ -755,6 +886,7 @@
- 	if (!sinfo)
- 		return 0;
- 
-+	exit_backlight(sinfo);
- 	if (sinfo->atmel_lcdfb_power_control)
- 		sinfo->atmel_lcdfb_power_control(0);
- 	unregister_framebuffer(info);
-@@ -781,6 +913,9 @@
- 
- static struct platform_driver atmel_lcdfb_driver = {
- 	.remove		= __exit_p(atmel_lcdfb_remove),
++		return 0;
 +
-+// FIXME need suspend, resume
++	/* File positions 0 and 1 correspond to "." and ".." */
++	if (file->f_pos == 0) {
++		ubifs_assert(!file->private_data);
++		over = filldir(dirent, ".", 1, 0, dir->i_ino, DT_DIR);
++		if (over)
++			return 0;
++		file->f_pos = 1;
++	}
 +
- 	.driver		= {
- 		.name	= "atmel_lcdfb",
- 		.owner	= THIS_MODULE,
---- a/drivers/video/backlight/Kconfig
-+++ b/drivers/video/backlight/Kconfig
-@@ -50,6 +50,19 @@
- 	  To have support for your specific LCD panel you will have to
- 	  select the proper drivers which depend on this option.
- 
-+config BACKLIGHT_ATMEL_LCDC
-+	bool "Atmel LCDC Contrast-as-Backlight control"
-+	depends on BACKLIGHT_CLASS_DEVICE && FB_ATMEL
-+	default y if MACH_SAM9261EK || MACH_SAM9263EK
++	if (file->f_pos == 1) {
++		ubifs_assert(!file->private_data);
++		over = filldir(dirent, "..", 2, 1,
++			       parent_ino(file->f_path.dentry), DT_DIR);
++		if (over)
++			return 0;
++
++		/* Find the first entry in TNC and save it */
++		lowest_dent_key(c, &key, dir->i_ino);
++		nm.name = NULL;
++		dent = ubifs_tnc_next_ent(c, &key, &nm);
++		if (IS_ERR(dent)) {
++			err = PTR_ERR(dent);
++			goto out;
++		}
++
++		file->f_pos = key_hash_flash(c, &dent->key);
++		file->private_data = dent;
++	}
++
++	dent = file->private_data;
++	if (!dent) {
++		/*
++		 * The directory was seek'ed to and is now readdir'ed.
++		 * Find the entry corresponding to @file->f_pos or the
++		 * closest one.
++		 */
++		dent_key_init_hash(c, &key, dir->i_ino, file->f_pos);
++		nm.name = NULL;
++		dent = ubifs_tnc_next_ent(c, &key, &nm);
++		if (IS_ERR(dent)) {
++			err = PTR_ERR(dent);
++			goto out;
++		}
++		file->f_pos = key_hash_flash(c, &dent->key);
++		file->private_data = dent;
++	}
++
++	while (1) {
++		dbg_gen("feed '%s', ino %llu, new f_pos %#x",
++			dent->name, le64_to_cpu(dent->inum),
++			key_hash_flash(c, &dent->key));
++		ubifs_assert(dent->ch.sqnum > ubifs_inode(dir)->creat_sqnum);
++
++		nm.len = le16_to_cpu(dent->nlen);
++		over = filldir(dirent, dent->name, nm.len, file->f_pos,
++			       le64_to_cpu(dent->inum),
++			       vfs_dent_type(dent->type));
++		if (over)
++			return 0;
++
++		/* Switch to the next entry */
++		key_read(c, &dent->key, &key);
++		nm.name = dent->name;
++		dent = ubifs_tnc_next_ent(c, &key, &nm);
++		if (IS_ERR(dent)) {
++			err = PTR_ERR(dent);
++			goto out;
++		}
++
++		kfree(file->private_data);
++		file->f_pos = key_hash_flash(c, &dent->key);
++		file->private_data = dent;
++		cond_resched();
++	}
++
++out:
++	if (err != -ENOENT) {
++		ubifs_err("cannot find next direntry, error %d", err);
++		return err;
++	}
++
++	kfree(file->private_data);
++	file->private_data = NULL;
++	file->f_pos = 2;
++	return 0;
++}
++
++/* If a directory is seeked, we have to free saved readdir() state */
++loff_t ubifs_dir_llseek(struct file *file, loff_t offset, int origin)
++{
++	kfree(file->private_data);
++	file->private_data = NULL;
++	return generic_file_llseek(file, offset, origin);
++}
++
++/* Free saved readdir() state when the directory is closed */
++static int ubifs_dir_release(struct inode *dir, struct file *file)
++{
++	kfree(file->private_data);
++	file->private_data = NULL;
++	return 0;
++}
++
++static int ubifs_link(struct dentry *old_dentry, struct inode *dir,
++		      struct dentry *dentry)
++{
++	struct ubifs_info *c = dir->i_sb->s_fs_info;
++	struct inode *inode = old_dentry->d_inode;
++	struct ubifs_inode *ui = ubifs_inode(inode);
++	struct ubifs_budget_req req = { .new_dent = 1, .dirtied_ino = 1,
++					.dirtied_ino_d = ui->data_len };
++	int err, sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++
++	dbg_gen("dent '%.*s' to ino %lu (nlink %d) in dir ino %lu",
++		dentry->d_name.len, dentry->d_name.name, inode->i_ino,
++		inode->i_nlink, dir->i_ino);
++
++	err = ubifs_budget_inode_op(c, dir, &req);
++	if (err)
++		return err;
++
++	inc_nlink(inode);
++	dir->i_size += sz_change;
++	inode->i_ctime = dir->i_mtime = dir->i_ctime =
++			 ubifs_current_time(inode);
++
++	err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++			       IS_DIRSYNC(dir), 0);
++	if (err)
++		goto out_budg;
++
++	atomic_inc(&inode->i_count);
++	d_instantiate(dentry, inode);
++	ubifs_release_ino_clean(c, dir, &req);
++	return 0;
++
++out_budg:
++	dir->i_size -= sz_change;
++	ubifs_cancel_ino_op(c, dir, &req);
++	drop_nlink(inode);
++	iput(inode);
++	return err;
++}
++
++static int ubifs_unlink(struct inode *dir, struct dentry *dentry)
++{
++	struct ubifs_info *c = dir->i_sb->s_fs_info;
++	struct inode *inode = dentry->d_inode;
++	struct ubifs_budget_req req = { .mod_dent = 1, .dirtied_ino = 1 };
++	int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++	int err, budgeted = 1;
++
++	dbg_gen("dent '%.*s' from ino %lu (nlink %d) in dir ino %lu",
++		dentry->d_name.len, dentry->d_name.name, inode->i_ino,
++		inode->i_nlink, dir->i_ino);
++
++	err = ubifs_budget_inode_op(c, dir, &req);
++	if (err) {
++		if (err != -ENOSPC)
++			return err;
++		err = 0;
++		budgeted = 0;
++	}
++
++	dir->i_size -= sz_change;
++	dir->i_mtime = dir->i_ctime = ubifs_current_time(dir);
++
++	inode->i_ctime = dir->i_ctime;
++	drop_nlink(inode);
++
++	err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 1,
++			       IS_DIRSYNC(dir), 0);
++	if (err)
++		goto out_budg;
++
++	if (budgeted)
++		ubifs_release_ino_clean(c, dir, &req);
++
++	return 0;
++
++out_budg:
++	dir->i_size += sz_change;
++	inc_nlink(inode);
++	if (budgeted)
++		ubifs_cancel_ino_op(c, dir, &req);
++	return err;
++}
++
++/**
++ * check_dir_empty - check if a directory is empty or not.
++ * @c: UBIFS file-system description object
++ * @dir: VFS inode object of the directory to check
++ *
++ * This function checks if directory @dir is empty. Returns zero if the
++ * directory is empty, %-ENOTEMPTY if it is not, and other negative error codes
++ * in case of of errors.
++ */
++static int check_dir_empty(struct ubifs_info *c, struct inode *dir)
++{
++	struct qstr nm = { .name = NULL };
++	struct ubifs_dent_node *dent;
++	union ubifs_key key;
++	int err;
++
++	lowest_dent_key(c, &key, dir->i_ino);
++	dent = ubifs_tnc_next_ent(c, &key, &nm);
++	if (IS_ERR(dent)) {
++		err = PTR_ERR(dent);
++		if (err == -ENOENT)
++			err = 0;
++	} else {
++		kfree(dent);
++		err = -ENOTEMPTY;
++	}
++
++	return err;
++}
++
++static int ubifs_rmdir(struct inode *dir, struct dentry *dentry)
++{
++	struct ubifs_info *c = dir->i_sb->s_fs_info;
++	struct inode *inode = dentry->d_inode;
++	struct ubifs_budget_req req = { .mod_dent = 1, .dirtied_ino = 1 };
++	int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++	int err, budgeted = 0;
++
++	dbg_gen("directory '%.*s', ino %lu in dir ino %lu", dentry->d_name.len,
++		dentry->d_name.name, inode->i_ino, dir->i_ino);
++
++	err = check_dir_empty(c, dentry->d_inode);
++	if (err)
++		return err;
++
++	budgeted = 1;
++	err = ubifs_budget_inode_op(c, dir, &req);
++	if (err) {
++		if (err != -ENOSPC)
++			return err;
++		budgeted = 0;
++	}
++
++	dir->i_size -= sz_change;
++	dir->i_mtime = dir->i_ctime = ubifs_current_time(dir);
++	drop_nlink(dir);
++
++	inode->i_size = 0;
++	inode->i_ctime = dir->i_ctime;
++	clear_nlink(inode);
++
++	err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 1,
++			       IS_DIRSYNC(dir), 0);
++	if (err)
++		goto out_budg;
++
++	if (budgeted)
++		ubifs_release_ino_clean(c, dir, &req);
++
++	return 0;
++
++out_budg:
++	dir->i_size += sz_change;
++	inc_nlink(dir);
++	inc_nlink(inode);
++	inc_nlink(inode);
++	if (budgeted)
++		ubifs_cancel_ino_op(c, dir, &req);
++	return err;
++}
++
++static int ubifs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
++{
++	struct inode *inode;
++	struct ubifs_info *c = dir->i_sb->s_fs_info;
++	struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1 };
++	int err, sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++
++	dbg_gen("dent '%.*s', mode %#x in dir ino %lu",
++		dentry->d_name.len, dentry->d_name.name, mode, dir->i_ino);
++
++	err = ubifs_budget_inode_op(c, dir, &req);
++	if (err)
++		return err;
++
++	inode = ubifs_new_inode(c, dir, S_IFDIR | mode);
++	if (IS_ERR(inode)) {
++		err = PTR_ERR(inode);
++		goto out_budg;
++	}
++
++	insert_inode_hash(inode);
++	inc_nlink(inode);
++
++	dir->i_mtime = dir->i_ctime = ubifs_current_time(dir);
++	dir->i_size += sz_change;
++	inc_nlink(dir);
++
++	err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++			       IS_DIRSYNC(dir), 0);
++	if (err) {
++		ubifs_err("cannot create directory, error %d", err);
++		goto out_inode;
++	}
++
++	d_instantiate(dentry, inode);
++	ubifs_release_ino_clean(c, dir, &req);
++	return 0;
++
++out_inode:
++	dir->i_size -= sz_change;
++	drop_nlink(dir);
++	make_bad_inode(inode);
++	iput(inode);
++out_budg:
++	ubifs_cancel_ino_op(c, dir, &req);
++	return err;
++}
++
++static int ubifs_mknod(struct inode *dir, struct dentry *dentry,
++		       int mode, dev_t rdev)
++{
++	struct inode *inode;
++	struct ubifs_info *c = dir->i_sb->s_fs_info;
++	struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1 };
++	union ubifs_dev_desc *dev = NULL;
++	int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++	int err, devlen = 0;
++
++	dbg_gen("dent '%.*s' in dir ino %lu",
++		dentry->d_name.len, dentry->d_name.name, dir->i_ino);
++
++	if (!new_valid_dev(rdev))
++		return -EINVAL;
++
++	if (S_ISBLK(mode) || S_ISCHR(mode)) {
++		dev = kmalloc(sizeof(union ubifs_dev_desc), GFP_NOFS);
++		if (!dev)
++			return -ENOMEM;
++		devlen = ubifs_encode_dev(dev, rdev);
++	}
++
++	err = ubifs_budget_inode_op(c, dir, &req);
++	if (err) {
++		kfree(dev);
++		return err;
++	}
++
++	inode = ubifs_new_inode(c, dir, mode);
++	if (IS_ERR(inode)) {
++		kfree(dev);
++		err = PTR_ERR(inode);
++		goto out_budg;
++	}
++
++	init_special_inode(inode, inode->i_mode, rdev);
++
++	inode->i_size = devlen;
++	ubifs_inode(inode)->data = dev;
++	ubifs_inode(inode)->data_len = devlen;
++
++	dir->i_size += sz_change;
++
++	err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++			       IS_DIRSYNC(dir), 0);
++	if (err)
++		goto out_inode;
++
++	insert_inode_hash(inode);
++	d_instantiate(dentry, inode);
++	ubifs_release_ino_clean(c, dir, &req);
++	return 0;
++
++out_inode:
++	dir->i_size -= sz_change;
++	make_bad_inode(inode);
++	iput(inode);
++out_budg:
++	ubifs_cancel_ino_op(c, dir, &req);
++	return err;
++}
++
++static int ubifs_symlink(struct inode *dir, struct dentry *dentry,
++			 const char *symname)
++{
++	struct inode *inode;
++	struct ubifs_inode *ui;
++	struct ubifs_info *c = dir->i_sb->s_fs_info;
++	int err, len = strlen(symname);
++	int sz_change = CALC_DENT_SIZE(dentry->d_name.len);
++	struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1,
++					.new_ino_d = len };
++
++	dbg_gen("dent '%.*s', target '%s' in dir ino %lu", dentry->d_name.len,
++		dentry->d_name.name, symname, dir->i_ino);
++
++	if (len > UBIFS_MAX_INO_DATA)
++		return -ENAMETOOLONG;
++
++	err = ubifs_budget_inode_op(c, dir, &req);
++	if (err)
++		return err;
++
++	inode = ubifs_new_inode(c, dir, S_IFLNK | S_IRWXUGO);
++	if (IS_ERR(inode)) {
++		err = PTR_ERR(inode);
++		goto out_budg;
++	}
++
++	ui = ubifs_inode(inode);
++	ui->data = kmalloc(len + 1, GFP_NOFS);
++	if (!ui->data) {
++		err = -ENOMEM;
++		goto out_inode;
++	}
++
++	memcpy(ui->data, symname, len);
++	((char *)ui->data)[len] = '\0';
++	/*
++	 * The terminating zero byte is not written to the flash media and it
++	 * is put just to make later in-memory string processing simpler. Thus,
++	 * data length is @len, not @len + %1.
++	 */
++	ui->data_len = len;
++	inode->i_size = len;
++
++	dir->i_size += sz_change;
++
++	err = ubifs_jnl_update(c, dir, &dentry->d_name, inode, 0,
++			       IS_DIRSYNC(dir), 0);
++	if (err)
++		goto out_dir;
++
++	insert_inode_hash(inode);
++	d_instantiate(dentry, inode);
++	ubifs_release_ino_clean(c, dir, &req);
++	return 0;
++
++out_dir:
++	dir->i_size -= sz_change;
++out_inode:
++	make_bad_inode(inode);
++	iput(inode);
++out_budg:
++	ubifs_cancel_ino_op(c, dir, &req);
++	return err;
++}
++
++static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
++			struct inode *new_dir, struct dentry *new_dentry)
++{
++	struct ubifs_info *c = old_dir->i_sb->s_fs_info;
++	struct inode *old_inode = old_dentry->d_inode;
++	struct inode *new_inode = new_dentry->d_inode;
++	int err, move = (new_dir != old_dir);
++	int is_dir = S_ISDIR(old_inode->i_mode);
++	int unlink = !!new_inode;
++	int dirsync = (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir));
++	int new_sz = CALC_DENT_SIZE(new_dentry->d_name.len);
++	int old_sz = CALC_DENT_SIZE(old_dentry->d_name.len);
++	struct ubifs_budget_req req = { .new_dent = 1, .mod_dent = 1 };
++	struct timespec time = ubifs_current_time(old_dir);
++
++	dbg_gen("dent '%.*s' ino %lu in dir ino %lu to dent '%.*s' in "
++		"dir ino %lu", old_dentry->d_name.len, old_dentry->d_name.name,
++		old_inode->i_ino, old_dir->i_ino, new_dentry->d_name.len,
++		new_dentry->d_name.name, new_dir->i_ino);
++
++	if (unlink && is_dir) {
++		err = check_dir_empty(c, new_inode);
++		if (err)
++			return err;
++	}
++
++	if (move) {
++		req.dirtied_ino = 1;
++		if (unlink) {
++			req.dirtied_ino += 2;
++			req.dirtied_ino_d = ubifs_inode(new_inode)->data_len;
++		}
++	}
++
++	/*
++	 * Note, rename may write @new_dir inode if the directory entry is
++	 * moved there. And if the @new_dir is dirty, we do not bother to make
++	 * it clean. It could be done, but requires extra coding which does not
++	 * seem to be really worth it.
++	 */
++	err = ubifs_budget_inode_op(c, old_dir, &req);
++	if (err)
++		return err;
++
++	/*
++	 * Like most other Unix systems, set the ctime for inodes on a
++	 * rename.
++	 */
++	old_inode->i_ctime = time;
++
++	/*
++	 * If we moved a directory to another parent directory, decrement
++	 * 'i_nlink' of the old parent. Also, update 'i_size' of the old parent
++	 * as well as its [mc]time.
++	 */
++	if (is_dir && move)
++		drop_nlink(old_dir);
++	old_dir->i_size -= old_sz;
++	old_dir->i_mtime = old_dir->i_ctime = time;
++	new_dir->i_mtime = new_dir->i_ctime = time;
++
++	/*
++	 * If we moved a directory object to new directory, parent's 'i_nlink'
++	 * should be adjusted.
++	 */
++	if (move && is_dir)
++		inc_nlink(new_dir);
++
++	/*
++	 * And finally, if we unlinked a direntry which happened to have the
++	 * same name as the moved direntry, we have to decrement 'i_nlink' of
++	 * the unlinked inode and change its ctime.
++	 */
++	if (unlink) {
++		/*
++		 * Directories cannot have hard-links, so if this is a
++		 * directory, decrement its 'i_nlink' twice because an empty
++		 * directory has 'i_nlink' 2.
++		 */
++		if (is_dir)
++			drop_nlink(new_inode);
++		new_inode->i_ctime = time;
++		drop_nlink(new_inode);
++	} else
++		new_dir->i_size += new_sz;
++
++	err = ubifs_jnl_rename(c, old_dir, old_dentry, new_dir, new_dentry,
++			       dirsync);
++	if (err)
++		goto out_inode;
++
++	ubifs_release_ino_clean(c, old_dir, &req);
++	return 0;
++
++out_inode:
++	if (unlink) {
++		if (is_dir)
++			inc_nlink(new_inode);
++		inc_nlink(new_inode);
++	} else
++		new_dir->i_size -= new_sz;
++	old_dir->i_size += old_sz;
++	if (is_dir && move) {
++		drop_nlink(new_dir);
++		inc_nlink(old_dir);
++	}
++	ubifs_cancel_ino_op(c, old_dir, &req);
++	return err;
++}
++
++int ubifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
++		  struct kstat *stat)
++{
++	struct inode *inode = dentry->d_inode;
++	loff_t size;
++
++	stat->dev = inode->i_sb->s_dev;
++	stat->ino = inode->i_ino;
++	stat->mode = inode->i_mode;
++	stat->nlink = inode->i_nlink;
++	stat->uid = inode->i_uid;
++	stat->gid = inode->i_gid;
++	stat->rdev = inode->i_rdev;
++	stat->atime = inode->i_atime;
++	stat->mtime = inode->i_mtime;
++	stat->ctime = inode->i_ctime;
++	stat->blksize = UBIFS_BLOCK_SIZE;
++	stat->size = i_size_read(inode);
++
++	spin_lock(&inode->i_lock);
++	size = ubifs_inode(inode)->xattr_size;
++	spin_unlock(&inode->i_lock);
++
++	/*
++	 * Unfortunately, the 'stat()' system call was designed for block
++	 * device based file systems, and it is not appropriate for UBIFS,
++	 * because UBIFS does not have notion of "block". For example, it is
++	 * difficult to tell how many block a directory takes - it actually
++	 * takes less than 300 bytes, but we have to round it to block size,
++	 * which introduces large mistake. This makes utilities like 'du' to
++	 * report completely senseless numbers. This is the reason why UBIFS
++	 * goes the same way as JFFS2 - it reports zero blocks for everything
++	 * but regular files, which makes more sense than reporting completely
++	 * wrong sizes.
++	 */
++	if (S_ISREG(inode->i_mode))
++		size += stat->size;
++
++	size = ALIGN(size, UBIFS_BLOCK_SIZE);
++	/*
++	 * Note, user-space expects 512-byte blocks count irrespectively of what
++	 * was reported in @stat->size.
++	 */
++	stat->blocks = size >> 9;
++
++	return 0;
++}
++
++struct inode_operations ubifs_dir_inode_operations = {
++	.lookup      = ubifs_lookup,
++	.create      = ubifs_create,
++	.link        = ubifs_link,
++	.symlink     = ubifs_symlink,
++	.unlink      = ubifs_unlink,
++	.mkdir       = ubifs_mkdir,
++	.rmdir       = ubifs_rmdir,
++	.mknod       = ubifs_mknod,
++	.rename      = ubifs_rename,
++	.setattr     = ubifs_setattr,
++	.getattr     = ubifs_getattr,
++#ifdef CONFIG_UBIFS_FS_XATTR
++	.setxattr    = ubifs_setxattr,
++	.getxattr    = ubifs_getxattr,
++	.listxattr   = ubifs_listxattr,
++	.removexattr = ubifs_removexattr,
++#endif
++};
++
++struct file_operations ubifs_dir_operations = {
++	.llseek         = ubifs_dir_llseek,
++	.release        = ubifs_dir_release,
++	.read           = generic_read_dir,
++	.readdir        = ubifs_readdir,
++	.fsync          = ubifs_fsync,
++	.unlocked_ioctl = ubifs_ioctl,
++#ifdef CONFIG_COMPAT
++	.compat_ioctl   = ubifs_compat_ioctl,
++#endif
++};
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/file.c avr32-2.6/fs/ubifs/file.c
+--- linux-2.6.25.6/fs/ubifs/file.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/file.c	2008-06-12 15:09:45.364399968 +0200
+@@ -0,0 +1,960 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file implements VFS file and inode operations of regular files, device
++ * nodes and symlinks as well as address space operations.
++ *
++ * UBIFS uses 2 page flags: PG_private and PG_checked. PG_private is set if the
++ * page is dirty and is used for budgeting purposes - dirty pages should not be
++ * budgeted. The PG_checked flag is set if full budgeting is required for the
++ * page e.g., when it corresponds to a file hole or it is just beyond the file
++ * size. The budgeting is done in 'ubifs_write_begin()', because it is OK to
++ * fail in this function, and the budget is released in 'ubifs_write_end()'. So
++ * the PG_private and PG_checked flags carry the information about how the page
++ * was budgeted, to make it possible to release the budget properly.
++ *
++ * A thing to keep in mind: inode's 'i_mutex' is locked in most VFS operations
++ * we implement. However, this is not true for '->writepage()', which might be
++ * called with 'i_mutex' unlocked. For example, when pdflush is performing
++ * write-back, it calls 'writepage()' with unlocked 'i_mutex', although the
++ * inode has 'I_LOCK' flag in this case. At "normal" work-paths 'i_mutex' is
++ * locked in '->writepage', e.g. in "sys_write -> alloc_pages -> direct reclaim
++ * path'. So, in '->writepage()' we are only guaranteed that the page is
++ * locked.
++ *
++ * Similarly, 'i_mutex' does not have to be locked in readpage(), e.g.,
++ * readahead path does not have it locked ("sys_read -> generic_file_aio_read
++ * -> ondemand_readahead -> readpage"). In case of readahead, 'I_LOCK' flag is
++ * not set as well.
++ *
++ * This, for example means that there might be 2 concurrent '->writepage()'
++ * calls for the same inode, but different inode dirty pages.
++ */
++
++#include "ubifs.h"
++#include <linux/mount.h>
++
++static int read_block(struct inode *inode, void *addr, unsigned int block,
++		      struct ubifs_data_node *dn)
++{
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	int err, len, out_len;
++	union ubifs_key key;
++	unsigned int dlen;
++
++	data_key_init(c, &key, inode->i_ino, block);
++	err = ubifs_tnc_lookup(c, &key, dn);
++	if (err) {
++		if (err == -ENOENT)
++			/* Not found, so it must be a hole */
++			memset(addr, 0, UBIFS_BLOCK_SIZE);
++		return err;
++	}
++
++	ubifs_assert(dn->ch.sqnum > ubifs_inode(inode)->creat_sqnum);
++
++	len = le32_to_cpu(dn->size);
++	if (len <= 0 || len > UBIFS_BLOCK_SIZE)
++		goto dump;
++
++	dlen = le32_to_cpu(dn->ch.len) - UBIFS_DATA_NODE_SZ;
++	out_len = UBIFS_BLOCK_SIZE;
++	err = ubifs_decompress(&dn->data, dlen, addr, &out_len,
++			       le16_to_cpu(dn->compr_type));
++	if (err || len != out_len)
++		goto dump;
++
++	/*
++	 * Data length can be less than a full block, even for blocks that are
++	 * not the last in the file (e.g., as a result of making a hole and
++	 * appending data). Ensure that the remainder is zeroed out.
++	 */
++	if (len < UBIFS_BLOCK_SIZE)
++		memset(addr + len, 0, UBIFS_BLOCK_SIZE - len);
++
++	return 0;
++
++dump:
++	ubifs_err("bad data node (block %u, inode %lu)",
++		  block, inode->i_ino);
++	dbg_dump_node(c, dn);
++	return -EINVAL;
++}
++
++static int do_readpage(struct page *page)
++{
++	void *addr;
++	int err = 0, i;
++	unsigned int block, beyond;
++	struct ubifs_data_node *dn;
++	struct inode *inode = page->mapping->host;
++	loff_t i_size = i_size_read(inode);
++
++	dbg_gen("ino %lu, pg %lu, i_size %lld, flags %#lx",
++		inode->i_ino, page->index, i_size, page->flags);
++	ubifs_assert(!PageChecked(page));
++	ubifs_assert(!PagePrivate(page));
++
++	addr = kmap(page);
++
++	block = page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT;
++	beyond = (i_size + UBIFS_BLOCK_SIZE - 1) >> UBIFS_BLOCK_SHIFT;
++	if (block >= beyond) {
++		/* Reading beyond inode */
++		SetPageChecked(page);
++		memset(addr, 0, PAGE_CACHE_SIZE);
++		goto out;
++	}
++
++	dn = kmalloc(UBIFS_MAX_DATA_NODE_SZ, GFP_NOFS);
++	if (!dn) {
++		err = -ENOMEM;
++		goto error;
++	}
++
++	i = 0;
++	while (1) {
++		int ret;
++
++		if (block >= beyond) {
++			/* Reading beyond inode */
++			err = -ENOENT;
++			memset(addr, 0, UBIFS_BLOCK_SIZE);
++		} else {
++			ret = read_block(inode, addr, block, dn);
++			if (ret) {
++				err = ret;
++				if (err != -ENOENT)
++					break;
++			}
++		}
++		if (++i >= UBIFS_BLOCKS_PER_PAGE)
++			break;
++		block += 1;
++		addr += UBIFS_BLOCK_SIZE;
++	}
++	if (err) {
++		if (err == -ENOENT) {
++			/* Not found, so it must be a hole */
++			SetPageChecked(page);
++			dbg_gen("hole");
++			goto out_free;
++		}
++		ubifs_err("cannot read page %lu of inode %lu, error %d",
++			  page->index, inode->i_ino, err);
++		goto error;
++	}
++
++out_free:
++	kfree(dn);
++out:
++	SetPageUptodate(page);
++	ClearPageError(page);
++	flush_dcache_page(page);
++	kunmap(page);
++	return 0;
++
++error:
++	kfree(dn);
++	ClearPageUptodate(page);
++	SetPageError(page);
++	flush_dcache_page(page);
++	kunmap(page);
++	return err;
++}
++
++static int ubifs_write_begin(struct file *file, struct address_space *mapping,
++			     loff_t pos, unsigned len, unsigned flags,
++			     struct page **pagep, void **fsdata)
++{
++	struct inode *inode = mapping->host;
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	pgoff_t index = pos >> PAGE_CACHE_SHIFT;
++	struct ubifs_budget_req req = { .new_page = 1 };
++	loff_t i_size =  i_size_read(inode);
++	int uninitialized_var(err);
++	struct page *page;
++
++	ubifs_assert(!(inode->i_sb->s_flags & MS_RDONLY));
++
++	if (unlikely(c->ro_media))
++		return -EROFS;
++
++	/*
++	 * We are about to have a page of data written and we have to budget for
++	 * this. The very important point here is that we have to budget before
++	 * locking the page, because budgeting may force write-back, which
++	 * would wait on locked pages and deadlock if we had the page locked.
++	 *
++	 * At this point we do not know anything about the page of data we are
++	 * going to change, so assume the biggest budget (i.e., assume that
++	 * this is a new page of data and it does not override an older page of
++	 * data in the inode). Later the budget will be amended if this is not
++	 * true.
++	 */
++	if (pos + len > i_size)
++		/*
++		 * We are writing beyond the file which means we are going to
++		 * change inode size and make the inode dirty. And in turn,
++		 * this means we have to budget for making the inode dirty.
++		 *
++		 * Note, if the inode is already dirty,
++		 * 'ubifs_budget_inode_op()' will not allocate any budget,
++		 * but will just lock the @budg_mutex of the inode to prevent
++		 * it from becoming clean before we have changed its size,
++		 * which is going to happen in 'ubifs_write_end()'.
++		 */
++		err = ubifs_budget_inode_op(c, inode, &req);
++	else
++		/*
++		 * The inode is not going to be marked as dirty by this write
++		 * operation, do not budget for this.
++		 */
++		err = ubifs_budget_space(c, &req);
++	if (unlikely(err))
++		return err;
++
++	page = __grab_cache_page(mapping, index);
++	if (unlikely(!page)) {
++		err = -ENOMEM;
++		goto out_release;
++	}
++
++	if (!PageUptodate(page)) {
++		/*
++		 * The page is not loaded from the flash and has to be loaded
++		 * unless we are writing all of it.
++		 */
++		if (!(pos & PAGE_CACHE_MASK) && len == PAGE_CACHE_SIZE)
++			/*
++			 * Set the PG_checked flag to make the further code
++			 * assume the page is new.
++			 */
++			SetPageChecked(page);
++		else {
++			err = do_readpage(page);
++			if (err)
++				goto out_unlock;
++		}
++
++		SetPageUptodate(page);
++		ClearPageError(page);
++	}
++
++	if (PagePrivate(page))
++		/*
++		 * The page is dirty, which means it was budgeted twice:
++		 *   o first time the budget was allocated by the task which
++		 *     made the page dirty and set the PG_private flag;
++		 *   o and then we budgeted for it for the second time at the
++		 *     very beginning of this function.
++		 *
++		 * So what we have to do is to release the page budget we
++		 * allocated.
++		 *
++		 * Note, the page write operation may change the inode length,
++		 * which makes it dirty and means the budget should be
++		 * allocated. This was done above in the "pos + len > i_size"
++		 * case. If this was done, we do not free the the inode budget,
++		 * because we cannot as we are really going to mark it dirty in
++		 * the 'ubifs_write_end()' function.
++		 */
++		ubifs_release_new_page_budget(c);
++	else if (!PageChecked(page))
++		/*
++		 * The page is not new, which means we are changing the page
++		 * which already exists on the media. This means that changing
++		 * the page does not make the amount of indexing information
++		 * larger, and this part of the budget which we have already
++		 * acquired may be released.
++		 */
++		ubifs_convert_page_budget(c);
++
++	*pagep = page;
++	return 0;
++
++out_unlock:
++	unlock_page(page);
++	page_cache_release(page);
++out_release:
++	if (pos + len > i_size)
++		ubifs_cancel_ino_op(c, inode, &req);
++	else
++		ubifs_release_budget(c, &req);
++	return err;
++}
++
++static int ubifs_write_end(struct file *file, struct address_space *mapping,
++			   loff_t pos, unsigned len, unsigned copied,
++			   struct page *page, void *fsdata)
++{
++	struct inode *inode = mapping->host;
++	struct ubifs_inode *ui = ubifs_inode(inode);
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	loff_t i_size =  i_size_read(inode);
++
++	dbg_gen("ino %lu, pos %llu, pg %lu, len %u, copied %d, i_size %lld",
++		inode->i_ino, pos, page->index, len, copied, i_size);
++
++	if (unlikely(copied < len && len == PAGE_CACHE_SIZE)) {
++		/*
++		 * VFS copied less data to the page that it intended and
++		 * declared in its '->write_begin()' call via the @len
++		 * argument. If the page was not up-to-date, and @len was
++		 * @PAGE_CACHE_SIZE, the 'ubifs_write_begin()' function did
++		 * not load it from the media (for optimization reasons). This
++		 * means that part of the page contains garbage. So read the
++		 * page now.
++		 */
++		dbg_gen("copied %d instead of %d, read page and repeat",
++			copied, len);
++
++		if (pos + len > i_size)
++			/* See a comment below about this hacky unlock */
++			mutex_unlock(&ui->budg_mutex);
++
++		copied = do_readpage(page);
++
++		/*
++		 * Return 0 to force VFS to repeat the whole operation, or the
++		 * error code if 'do_readpage()' failed.
++		 */
++		goto out;
++	}
++
++	if (!PagePrivate(page)) {
++		SetPagePrivate(page);
++		atomic_long_inc(&c->dirty_pg_cnt);
++		__set_page_dirty_nobuffers(page);
++	}
++
++	if (pos + len > i_size) {
++		i_size_write(inode, pos + len);
++
++		/*
++		 * Note, we do not set @I_DIRTY_PAGES (which means that the
++		 * inode has dirty pages), this has been done in
++		 * '__set_page_dirty_nobuffers()'.
++		 */
++		mark_inode_dirty_sync(inode);
++
++		/*
++		 * The inode has been marked dirty, unlock it. This is a bit
++		 * hacky because normally we would have to call
++		 * 'ubifs_release_ino_dirty()'. But we know there is nothing
++		 * to release because page's budget will be released in
++		 * 'ubifs_write_page()' and inode's budget will be released in
++		 * 'ubifs_write_inode()', so just unlock the inode here for
++		 * optimization.
++		 */
++		mutex_unlock(&ui->budg_mutex);
++	}
++
++out:
++	unlock_page(page);
++	page_cache_release(page);
++	return copied;
++}
++
++static int ubifs_readpage(struct file *file, struct page *page)
++{
++	do_readpage(page);
++	unlock_page(page);
++	return 0;
++}
++
++/**
++ * release_existing_page_budget - release budget of an existing page.
++ * @c: UBIFS file-system description object
++ *
++ * This is a helper function which releases budget corresponding to the budget
++ * of changing one one page of data which already exists on the flash media.
++ *
++ * This function was not moved to "budget.c" because there is only one user.
++ */
++static void release_existing_page_budget(struct ubifs_info *c)
++{
++	struct ubifs_budget_req req = { .dd_growth = c->page_budget};
++
++	ubifs_release_budget(c, &req);
++}
++
++static int do_writepage(struct page *page, int len)
++{
++	int err = 0, i, blen;
++	unsigned int block;
++	void *addr;
++	union ubifs_key key;
++	struct inode *inode = page->mapping->host;
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++
++	/* Update radix tree tags */
++	set_page_writeback(page);
++
++	addr = kmap(page);
++
++	block = page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT;
++	i = 0;
++	while (len) {
++		blen = min_t(int, len, UBIFS_BLOCK_SIZE);
++		data_key_init(c, &key, inode->i_ino, block);
++		err = ubifs_jnl_write_data(c, inode, &key, addr, blen);
++		if (err)
++			break;
++		if (++i >= UBIFS_BLOCKS_PER_PAGE)
++			break;
++		block += 1;
++		addr += blen;
++		len -= blen;
++	}
++	if (err) {
++		SetPageError(page);
++		ubifs_err("cannot write page %lu of inode %lu, error %d",
++			  page->index, inode->i_ino, err);
++		ubifs_ro_mode(c, err);
++	}
++
++	ubifs_assert(PagePrivate(page));
++	if (PageChecked(page))
++		ubifs_release_new_page_budget(c);
++	else
++		release_existing_page_budget(c);
++
++	atomic_long_dec(&c->dirty_pg_cnt);
++	ClearPagePrivate(page);
++	ClearPageChecked(page);
++
++	kunmap(page);
++	unlock_page(page);
++	end_page_writeback(page);
++
++	return err;
++}
++
++static int ubifs_writepage(struct page *page, struct writeback_control *wbc)
++{
++	struct inode *inode = page->mapping->host;
++	loff_t i_size =  i_size_read(inode);
++	pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT;
++	int len;
++	void *kaddr;
++
++	dbg_gen("ino %lu, pg %lu, pg flags %#lx",
++		inode->i_ino, page->index, page->flags);
++	ubifs_assert(PagePrivate(page));
++
++	/* Is the page fully inside i_size? */
++	if (page->index < end_index)
++		return do_writepage(page, PAGE_CACHE_SIZE);
++
++	/* Is the page fully outside i_size? (truncate in progress) */
++	len = i_size & (PAGE_CACHE_SIZE - 1);
++	if (page->index >= end_index + 1 || !len) {
++		unlock_page(page);
++		return 0;
++	}
++
++	/*
++	 * The page straddles i_size. It must be zeroed out on each and every
++	 * writepage invocation because it may be mmapped. "A file is mapped
++	 * in multiples of the page size. For a file that is not a multiple of
++	 * the page size, the remaining memory is zeroed when mapped, and
++	 * writes to that region are not written out to the file."
++	 */
++	kaddr = kmap_atomic(page, KM_USER0);
++	memset(kaddr + len, 0, PAGE_CACHE_SIZE - len);
++	flush_dcache_page(page);
++	kunmap_atomic(kaddr, KM_USER0);
++
++	return do_writepage(page, len);
++}
++
++static int ubifs_trunc(struct inode *inode, loff_t new_size)
++{
++	loff_t old_size;
++	int err;
++
++	dbg_gen("ino %lu, size %lld -> %lld",
++		inode->i_ino, inode->i_size, new_size);
++	old_size = inode->i_size;
++
++	err = vmtruncate(inode, new_size);
++	if (err)
++		return err;
++
++	if (new_size < old_size) {
++		struct ubifs_info *c = inode->i_sb->s_fs_info;
++		int offset = new_size & (UBIFS_BLOCK_SIZE - 1);
++
++		if (offset) {
++			pgoff_t index = new_size >> PAGE_CACHE_SHIFT;
++			struct page *page;
++
++			page = find_lock_page(inode->i_mapping, index);
++			if (page) {
++				if (PageDirty(page)) {
++					ubifs_assert(PagePrivate(page));
++
++					clear_page_dirty_for_io(page);
++					if (UBIFS_BLOCKS_PER_PAGE_SHIFT)
++						offset = new_size &
++							 (PAGE_CACHE_SIZE - 1);
++					err = do_writepage(page, offset);
++					page_cache_release(page);
++					if (err)
++						return err;
++					/*
++					 * We could now tell ubifs_jnl_truncate
++					 * not to read the last block.
++					 */
++				} else {
++					/*
++					 * We could 'kmap()' the page and
++					 * pass the data to ubifs_jnl_truncate
++					 * to save it from having to read it.
++					 */
++					unlock_page(page);
++					page_cache_release(page);
++				}
++			}
++		}
++		err = ubifs_jnl_truncate(c, inode->i_ino, old_size, new_size);
++		if (err)
++			return err;
++	}
++
++	return 0;
++}
++
++int ubifs_setattr(struct dentry *dentry, struct iattr *attr)
++{
++	unsigned int ia_valid = attr->ia_valid;
++	struct inode *inode = dentry->d_inode;
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	struct ubifs_budget_req req;
++	int truncation, err = 0;
++
++	dbg_gen("ino %lu, ia_valid %#x", inode->i_ino, ia_valid);
++	err = inode_change_ok(inode, attr);
++	if (err)
++		return err;
++
++	memset(&req, 0, sizeof(struct ubifs_budget_req));
++
++	/*
++	 * If this is truncation, and we do not truncate on a block boundary,
++	 * budget for changing one data block, because the last block will be
++	 * re-written.
++	 */
++	truncation = (ia_valid & ATTR_SIZE) && attr->ia_size != inode->i_size;
++	if (truncation && attr->ia_size < inode->i_size &&
++	    (attr->ia_size & (UBIFS_BLOCK_SIZE - 1)))
++		req.dirtied_page = 1;
++
++	err = ubifs_budget_inode_op(c, inode, &req);
++	if (err)
++		return err;
++
++	if (truncation) {
++		err = ubifs_trunc(inode, attr->ia_size);
++		if (err) {
++			ubifs_cancel_ino_op(c, inode, &req);
++			return err;
++		}
++
++		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);
++	}
++
++	if (ia_valid & ATTR_UID)
++		inode->i_uid = attr->ia_uid;
++	if (ia_valid & ATTR_GID)
++		inode->i_gid = attr->ia_gid;
++	if (ia_valid & ATTR_ATIME)
++		inode->i_atime = timespec_trunc(attr->ia_atime,
++						inode->i_sb->s_time_gran);
++	if (ia_valid & ATTR_MTIME)
++		inode->i_mtime = timespec_trunc(attr->ia_mtime,
++						inode->i_sb->s_time_gran);
++	if (ia_valid & ATTR_CTIME)
++		inode->i_ctime = timespec_trunc(attr->ia_ctime,
++						inode->i_sb->s_time_gran);
++	if (ia_valid & ATTR_MODE) {
++		umode_t mode = attr->ia_mode;
++
++		if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
++			mode &= ~S_ISGID;
++		inode->i_mode = mode;
++	}
++
++	mark_inode_dirty_sync(inode);
++	ubifs_release_ino_dirty(c, inode, &req);
++
++	if (req.dirtied_page) {
++		/*
++		 * Truncation code does not make the reenacted page dirty, it
++		 * just changes it on journal level, so we have to release page
++		 * change budget.
++		 */
++		memset(&req, 0, sizeof(struct ubifs_budget_req));
++		req.dd_growth = c->page_budget;
++		ubifs_release_budget(c, &req);
++	}
++
++	if (IS_SYNC(inode))
++		err = write_inode_now(inode, 1);
++
++	return err;
++}
++
++static void ubifs_invalidatepage(struct page *page, unsigned long offset)
++{
++	struct inode *inode = page->mapping->host;
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	struct ubifs_budget_req req;
++
++	ubifs_assert(PagePrivate(page));
++	if (offset)
++		/* Partial page remains dirty */
++		return;
++
++	memset(&req, 0, sizeof(struct ubifs_budget_req));
++	if (PageChecked(page)) {
++		req.new_page = 1;
++		req.idx_growth = -1;
++		req.data_growth = c->page_budget;
++	} else
++		req.dd_growth = c->page_budget;
++	ubifs_release_budget(c, &req);
++
++	atomic_long_dec(&c->dirty_pg_cnt);
++	ClearPagePrivate(page);
++	ClearPageChecked(page);
++}
++
++static void *ubifs_follow_link(struct dentry *dentry, struct nameidata *nd)
++{
++	struct ubifs_inode *ui = ubifs_inode(dentry->d_inode);
++
++	nd_set_link(nd, ui->data);
++	return NULL;
++}
++
++int ubifs_fsync(struct file *file, struct dentry *dentry, int datasync)
++{
++	struct inode *inode = dentry->d_inode;
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	int err;
++
++	dbg_gen("syncing inode %lu", inode->i_ino);
++
++	/* Synchronize the inode and dirty pages */
++	err = write_inode_now(inode, 1);
++	if (err)
++		return err;
++
++	/*
++	 * Some data related to this inode may still sit in a write-buffer.
++	 * Flush them.
++	 */
++	err = ubifs_sync_wbufs_by_inodes(c, &inode, 1);
++	if (err)
++		return err;
++
++	return 0;
++}
++
++/**
++ * mctime_update_needed - check if mtime or ctime update is needed.
++ * @inode: the inode to do the check for
++ * @now: current time
++ *
++ * This helper function checks if the inode mtime/ctime should be updated or
++ * not. If current values of the time-stamps are within the UBIFS inode time
++ * granularity, they are not updated. This is an optimization.
++ */
++static inline int mctime_update_needed(const struct inode *inode,
++				       const struct timespec *now)
++{
++	if (!timespec_equal(&inode->i_mtime, now) ||
++	    !timespec_equal(&inode->i_ctime, now))
++		return 1;
++	return 0;
++}
++
++/**
++ * update_ctime - update mtime and ctime of an inode.
++ * @c: UBIFS file-system description object
++ * @inode: inode to update
++ *
++ * This function updates mtime and ctime of the inode if it is not equivalent to
++ * current time. Returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int update_mctime(struct ubifs_info *c, struct inode *inode)
++{
++	struct timespec now = ubifs_current_time(inode);
++
++	if (mctime_update_needed(inode, &now)) {
++		struct ubifs_budget_req req;
++		int err;
++
++		memset(&req, 0, sizeof(struct ubifs_budget_req));
++		err = ubifs_budget_inode_op(c, inode, &req);
++		if (err)
++			return err;
++
++		inode->i_mtime = inode->i_ctime = now;
++		mark_inode_dirty_sync(inode);
++		mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++	}
++
++	return 0;
++}
++
++static ssize_t ubifs_write(struct file *file, const char __user *buf,
++			   size_t len, loff_t *ppos)
++{
++	int err;
++	ssize_t ret;
++	struct inode *inode = file->f_mapping->host;
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++
++	err = update_mctime(c, inode);
++	if (err)
++		return err;
++
++	ret = do_sync_write(file, buf, len, ppos);
++	if (ret < 0)
++		return ret;
++
++	if (ret > 0 && IS_SYNC(inode)) {
++		err = ubifs_sync_wbufs_by_inodes(c, &inode, 1);
++		if (err)
++			return err;
++	}
++
++	return ret;
++}
++
++static ssize_t ubifs_aio_write(struct kiocb *iocb, const struct iovec *iov,
++			       unsigned long nr_segs, loff_t pos)
++{
++	int err;
++	ssize_t ret;
++	struct inode *inode = iocb->ki_filp->f_mapping->host;
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++
++	err = update_mctime(c, inode);
++	if (err)
++		return err;
++
++	ret = generic_file_aio_write(iocb, iov, nr_segs, pos);
++	if (ret < 0)
++		return ret;
++
++	if (ret > 0 && IS_SYNC(inode)) {
++		err = ubifs_sync_wbufs_by_inodes(c, &inode, 1);
++		if (err)
++			return err;
++	}
++
++	return ret;
++}
++
++static int ubifs_set_page_dirty(struct page *page)
++{
++	int ret;
++
++	ret = __set_page_dirty_nobuffers(page);
++	/*
++	 * An attempt to dirty a page without budgeting for it - should not
++	 * happen.
++	 */
++	ubifs_assert(ret == 0);
++	return ret;
++}
++
++static int ubifs_releasepage(struct page *page, gfp_t unused_gfp_flags)
++{
++	/*
++	 * An attempt to release a dirty page without budgeting for it - should
++	 * not happen.
++	 */
++	if (PageWriteback(page))
++		return 0;
++	ubifs_assert(PagePrivate(page));
++	ubifs_assert(0);
++	ClearPagePrivate(page);
++	ClearPageChecked(page);
++	return 1;
++}
++
++/*
++ * mmap()d file has taken write protection fault and is being made
++ * writable. UBIFS must ensure page is budgeted for.
++ */
++static int ubifs_vm_page_mkwrite(struct vm_area_struct *vma, struct page *page)
++{
++	struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	struct timespec now = ubifs_current_time(inode);
++	struct ubifs_budget_req req = { .new_page = 1 };
++	int err, update_time;
++
++	dbg_gen("ino %lu, pg %lu, i_size %lld",	inode->i_ino, page->index,
++		i_size_read(inode));
++	ubifs_assert(!(inode->i_sb->s_flags & MS_RDONLY));
++
++	if (unlikely(c->ro_media))
++		return -EROFS;
++
++	/*
++	 * We have not locked @page so far so we may budget for changing the
++	 * page. Note, we cannot do this after we locked the page, because
++	 * budgeting may cause write-back which would cause deadlock.
++	 *
++	 * At the moment we do not know whether the page is dirty or not, so we
++	 * assume that it is not and budget for a new page. We could look at
++	 * the @PG_private flag and figure this out, but we may race with write
++	 * back and the page state may change by the time we lock it, so this
++	 * would need additional care. We do not bother with this at the
++	 * moment, although it might be good idea to do. Instead, we allocate
++	 * budget for a new page and amend it later on if the page was in fact
++	 * dirty.
++	 *
++	 * The budgeting-related logic of this function is similar to what we
++	 * do in 'ubifs_write_begin()' and 'ubifs_write_end()'. Glance there
++	 * for more comments.
++	 */
++	if (mctime_update_needed(inode, &now)) {
++		/*
++		 * We have to change inode time stamp which requires extra
++		 * budgeting.
++		 */
++		update_time = 1;
++		err = ubifs_budget_inode_op(c, inode, &req);
++	} else {
++		update_time = 0;
++		err = ubifs_budget_space(c, &req);
++	}
++	if (unlikely(err)) {
++		if (err == -ENOSPC)
++			ubifs_warn("out of space for mmapped file "
++				   "(inode number %lu)", inode->i_ino);
++		return err;
++	}
++
++	lock_page(page);
++	if (unlikely(page->mapping != inode->i_mapping ||
++		     page_offset(page) > i_size_read(inode))) {
++		/* Page got truncated out from underneath us */
++		err = -EINVAL;
++		goto out_unlock;
++	}
++
++	if (PagePrivate(page))
++		ubifs_release_new_page_budget(c);
++	else {
++		if (!PageChecked(page))
++			ubifs_convert_page_budget(c);
++		SetPagePrivate(page);
++		atomic_long_inc(&c->dirty_pg_cnt);
++		__set_page_dirty_nobuffers(page);
++	}
++
++	if (update_time) {
++		inode->i_mtime = inode->i_ctime = now;
++		mark_inode_dirty_sync(inode);
++		mutex_unlock(&ubifs_inode(inode)->budg_mutex);
++	}
++
++	unlock_page(page);
++	return 0;
++
++out_unlock:
++	unlock_page(page);
++	if (update_time)
++		ubifs_cancel_ino_op(c, inode, &req);
++	else
++		ubifs_release_budget(c, &req);
++	return err;
++}
++
++struct vm_operations_struct ubifs_file_vm_ops = {
++	.fault        = filemap_fault,
++	.page_mkwrite = ubifs_vm_page_mkwrite,
++};
++
++static int ubifs_file_mmap(struct file *file, struct vm_area_struct *vma)
++{
++	int err;
++
++	/* 'generic_file_mmap()' takes care of NOMMU case */
++	err = generic_file_mmap(file, vma);
++	if (err)
++		return err;
++	vma->vm_ops = &ubifs_file_vm_ops;
++	return 0;
++}
++
++struct address_space_operations ubifs_file_address_operations = {
++	.readpage       = ubifs_readpage,
++	.writepage      = ubifs_writepage,
++	.write_begin    = ubifs_write_begin,
++	.write_end      = ubifs_write_end,
++	.invalidatepage = ubifs_invalidatepage,
++	.set_page_dirty = ubifs_set_page_dirty,
++	.releasepage    = ubifs_releasepage,
++};
++
++struct inode_operations ubifs_file_inode_operations = {
++	.setattr     = ubifs_setattr,
++	.getattr     = ubifs_getattr,
++#ifdef CONFIG_UBIFS_FS_XATTR
++	.setxattr    = ubifs_setxattr,
++	.getxattr    = ubifs_getxattr,
++	.listxattr   = ubifs_listxattr,
++	.removexattr = ubifs_removexattr,
++#endif
++};
++
++struct inode_operations ubifs_symlink_inode_operations = {
++	.readlink    = generic_readlink,
++	.follow_link = ubifs_follow_link,
++	.setattr     = ubifs_setattr,
++	.getattr     = ubifs_getattr,
++};
++
++struct file_operations ubifs_file_operations = {
++	.llseek         = generic_file_llseek,
++	.read           = do_sync_read,
++	.write          = ubifs_write,
++	.aio_read       = generic_file_aio_read,
++	.aio_write      = ubifs_aio_write,
++	.mmap           = ubifs_file_mmap,
++	.fsync          = ubifs_fsync,
++	.unlocked_ioctl = ubifs_ioctl,
++#ifdef CONFIG_COMPAT
++	.compat_ioctl   = ubifs_compat_ioctl,
++#endif
++};
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/find.c avr32-2.6/fs/ubifs/find.c
+--- linux-2.6.25.6/fs/ubifs/find.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/find.c	2008-06-12 15:09:45.364399968 +0200
+@@ -0,0 +1,977 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file contains functions for finding LEBs for various purposes e.g.
++ * garbage collection. In general, lprops category heaps and lists are used
++ * for fast access, falling back on scanning the LPT as a last resort.
++ */
++
++#include <linux/sort.h>
++#include "ubifs.h"
++
++/**
++ * struct scan_data - data provided to scan callback functions
++ * @min_space: minimum number of bytes for which to scan
++ * @pick_free: whether it is OK to scan for empty LEBs
++ * @lnum: LEB number found is returned here
++ * @exclude_index: whether to exclude index LEBs
++ */
++struct scan_data {
++	int min_space;
++	int pick_free;
++	int lnum;
++	int exclude_index;
++};
++
++/**
++ * valuable - determine whether LEB properties are valuable.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties
++ *
++ * This function return %1 if the LEB properties should be added to the LEB
++ * properties tree in memory. Otherwise %0 is returned.
++ */
++static int valuable(struct ubifs_info *c, const struct ubifs_lprops *lprops)
++{
++	int n, cat = lprops->flags & LPROPS_CAT_MASK;
++	struct ubifs_lpt_heap *heap;
++
++	switch (cat) {
++	case LPROPS_DIRTY:
++	case LPROPS_DIRTY_IDX:
++	case LPROPS_FREE:
++		heap = &c->lpt_heap[cat - 1];
++		if (heap->cnt < heap->max_cnt)
++			return 1;
++		if (lprops->free + lprops->dirty >= c->dark_wm)
++			return 1;
++		return 0;
++	case LPROPS_EMPTY:
++		n = c->lst.empty_lebs + c->freeable_cnt -
++		    c->lst.taken_empty_lebs;
++		if (n < c->lsave_cnt)
++			return 1;
++		return 0;
++	case LPROPS_FREEABLE:
++		return 1;
++	case LPROPS_FRDI_IDX:
++		return 1;
++	}
++	return 0;
++}
++
++/**
++ * scan_for_dirty_cb - dirty space scan callback.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_for_dirty_cb(struct ubifs_info *c,
++			     const struct ubifs_lprops *lprops, int in_tree,
++			     struct scan_data *data)
++{
++	int ret = LPT_SCAN_CONTINUE;
++
++	/* Exclude LEBs that are currently in use */
++	if (lprops->flags & LPROPS_TAKEN)
++		return LPT_SCAN_CONTINUE;
++	/* Determine whether to add these LEB properties to the tree */
++	if (!in_tree && valuable(c, lprops))
++		ret |= LPT_SCAN_ADD;
++	/* Exclude LEBs with too little space */
++	if (lprops->free + lprops->dirty < data->min_space)
++		return ret;
++	/* If specified, exclude index LEBs */
++	if (data->exclude_index && lprops->flags & LPROPS_INDEX)
++		return ret;
++	/* If specified, exclude empty or freeable LEBs */
++	if (lprops->free + lprops->dirty == c->leb_size) {
++		if (!data->pick_free)
++			return ret;
++	/* Exclude LEBs with too little dirty space (unless it is empty) */
++	} else if (lprops->dirty < c->dead_wm)
++		return ret;
++	/* Finally we found space */
++	data->lnum = lprops->lnum;
++	return LPT_SCAN_ADD | LPT_SCAN_STOP;
++}
++
++/**
++ * scan_for_dirty - find a data LEB with free space.
++ * @c: the UBIFS file-system description object
++ * @min_space: minimum amount free plus dirty space the returned LEB has to
++ *             have
++ * @pick_free: if it is OK to return a free or freeable LEB
++ * @exclude_index: whether to exclude index LEBs
++ *
++ * This function returns a pointer to the LEB properties found or a negative
++ * error code.
++ */
++static const struct ubifs_lprops *scan_for_dirty(struct ubifs_info *c,
++						 int min_space, int pick_free,
++						 int exclude_index)
++{
++	const struct ubifs_lprops *lprops;
++	struct ubifs_lpt_heap *heap;
++	struct scan_data data;
++	int err, i;
++
++	/* There may be an LEB with enough dirty space on the free heap */
++	heap = &c->lpt_heap[LPROPS_FREE - 1];
++	for (i = 0; i < heap->cnt; i++) {
++		lprops = heap->arr[i];
++		if (lprops->free + lprops->dirty < min_space)
++			continue;
++		if (lprops->dirty < c->dead_wm)
++			continue;
++		return lprops;
++	}
++	/*
++	 * A LEB may have fallen off of the bottom of the dirty heap, and ended
++	 * up as uncategorized even though it has enough dirty space for us now,
++	 * so check the uncategorized list. N.B. neither empty nor freeable LEBs
++	 * can end up as uncategorized because they are kept on lists not
++	 * finite-sized heaps.
++	 */
++	list_for_each_entry(lprops, &c->uncat_list, list) {
++		if (lprops->flags & LPROPS_TAKEN)
++			continue;
++		if (lprops->free + lprops->dirty < min_space)
++			continue;
++		if (exclude_index && (lprops->flags & LPROPS_INDEX))
++			continue;
++		if (lprops->dirty < c->dead_wm)
++			continue;
++		return lprops;
++	}
++	/* We have looked everywhere in main memory, now scan the flash */
++	if (c->pnodes_have >= c->pnode_cnt)
++		/* All pnodes are in memory, so skip scan */
++		return ERR_PTR(-ENOSPC);
++	data.min_space = min_space;
++	data.pick_free = pick_free;
++	data.lnum = -1;
++	data.exclude_index = exclude_index;
++	err = ubifs_lpt_scan_nolock(c, -1, c->lscan_lnum,
++				    (ubifs_lpt_scan_callback)scan_for_dirty_cb,
++				    &data);
++	if (err)
++		return ERR_PTR(err);
++	ubifs_assert(data.lnum >= c->main_first && data.lnum < c->leb_cnt);
++	c->lscan_lnum = data.lnum;
++	lprops = ubifs_lpt_lookup_dirty(c, data.lnum);
++	if (IS_ERR(lprops))
++		return lprops;
++	ubifs_assert(lprops->lnum == data.lnum);
++	ubifs_assert(lprops->free + lprops->dirty >= min_space);
++	ubifs_assert(lprops->dirty >= c->dead_wm ||
++		     (pick_free &&
++		      lprops->free + lprops->dirty == c->leb_size));
++	ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++	ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++	return lprops;
++}
++
++/**
++ * ubifs_find_dirty_leb - find a dirty LEB for the Garbage Collector.
++ * @c: the UBIFS file-system description object
++ * @ret_lp: LEB properties are returned here on exit
++ * @min_space: minimum amount free plus dirty space the returned LEB has to
++ *             have
++ * @pick_free: controls whether it is OK to pick empty or index LEBs
++ *
++ * This function tries to find a dirty logical eraseblock which has at least
++ * @min_space free and dirty space. It prefers to take an LEB from the dirty or
++ * dirty index heap, and it falls-back to LPT scanning if the heaps are empty
++ * or do not have an LEB which satisfies the @min_space criteria.
++ *
++ * Note:
++ *   o LEBs which have less than dead watermark of dirty space are never picked
++ *   by this function;
++ *
++ * Returns zero and the LEB properties of
++ * found dirty LEB in case of success, %-ENOSPC if no dirty LEB was found and a
++ * negative error code in case of other failures. The returned LEB is marked as
++ * "taken".
++ *
++ * The additional @pick_free argument controls if this function has to return a
++ * free or freeable LEB if one is present. For example, GC must to set it to %1,
++ * when called from the journal space reservation function, because the
++ * appearance of free space may coincide with the loss of enough dirty space
++ * for GC to succeed anyway.
++ *
++ * In contrast, if the Garbage Collector is called from budgeting, it should
++ * just make free space, not return LEBs which are already free or freeable.
++ *
++ * In addition @pick_free is set to %2 by the recovery process in order to
++ * recover gc_lnum in which case an index LEB must not be returned.
++ */
++int ubifs_find_dirty_leb(struct ubifs_info *c, struct ubifs_lprops *ret_lp,
++			 int min_space, int pick_free)
++{
++	int err = 0, sum, exclude_index = pick_free == 2 ? 1 : 0;
++	const struct ubifs_lprops *lp = NULL, *idx_lp = NULL;
++	struct ubifs_lpt_heap *heap, *idx_heap;
++
++	ubifs_get_lprops(c);
++
++	if (pick_free) {
++		int lebs, rsvd_idx_lebs = 0;
++
++		spin_lock(&c->space_lock);
++		lebs = c->lst.empty_lebs;
++		lebs += c->freeable_cnt - c->lst.taken_empty_lebs;
++
++		/*
++		 * Note, the index may consume more LEBs than have been reserved
++		 * for it. It is OK because it might be consolidated by GC.
++		 * But if the index takes fewer LEBs than it is reserved for it,
++		 * this function must avoid picking those reserved LEBs.
++		 */
++		if (c->min_idx_lebs >= c->lst.idx_lebs) {
++			rsvd_idx_lebs = c->min_idx_lebs -  c->lst.idx_lebs;
++			exclude_index = 1;
++		}
++		spin_unlock(&c->space_lock);
++
++		/* Check if there are enough free LEBs for the index */
++		if (rsvd_idx_lebs < lebs) {
++			/* OK, try to find an empty LEB */
++			lp = ubifs_fast_find_empty(c);
++			if (lp)
++				goto found;
++
++			/* Or a freeable LEB */
++			lp = ubifs_fast_find_freeable(c);
++			if (lp)
++				goto found;
++		} else
++			/*
++			 * We cannot pick free/freeable LEBs in the below code.
++			 */
++			pick_free = 0;
++	} else {
++		spin_lock(&c->space_lock);
++		exclude_index = (c->min_idx_lebs >= c->lst.idx_lebs);
++		spin_unlock(&c->space_lock);
++	}
++
++	/* Look on the dirty and dirty index heaps */
++	heap = &c->lpt_heap[LPROPS_DIRTY - 1];
++	idx_heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
++
++	if (idx_heap->cnt && !exclude_index) {
++		idx_lp = idx_heap->arr[0];
++		sum = idx_lp->free + idx_lp->dirty;
++		/*
++		 * Since we reserve twice as more space for the index than it
++		 * actually takes, it does not make sense to pick indexing LEBs
++		 * with less than half LEB of dirty space.
++		 */
++		if (sum < min_space || sum < c->half_leb_size)
++			idx_lp = NULL;
++	}
++
++	if (heap->cnt) {
++		lp = heap->arr[0];
++		if (lp->dirty + lp->free < min_space)
++			lp = NULL;
++	}
++
++	/* Pick the LEB with most space */
++	if (idx_lp && lp) {
++		if (idx_lp->free + idx_lp->dirty >= lp->free + lp->dirty)
++			lp = idx_lp;
++	} else if (idx_lp && !lp)
++		lp = idx_lp;
++
++	if (lp) {
++		ubifs_assert(lp->dirty >= c->dead_wm);
++		goto found;
++	}
++
++	/* Did not find a dirty LEB on the dirty heaps, have to scan */
++	dbg_find("scanning LPT for a dirty LEB");
++	lp = scan_for_dirty(c, min_space, pick_free, exclude_index);
++	if (IS_ERR(lp)) {
++		err = PTR_ERR(lp);
++		goto out;
++	}
++	ubifs_assert(lp->dirty >= c->dead_wm ||
++		     (pick_free && lp->free + lp->dirty == c->leb_size));
++
++found:
++	dbg_find("found LEB %d, free %d, dirty %d, flags %#x",
++		 lp->lnum, lp->free, lp->dirty, lp->flags);
++
++	lp = ubifs_change_lp(c, lp, LPROPS_NC, LPROPS_NC,
++			     lp->flags | LPROPS_TAKEN, 0);
++	if (IS_ERR(lp)) {
++		err = PTR_ERR(lp);
++		goto out;
++	}
++
++	memcpy(ret_lp, lp, sizeof(struct ubifs_lprops));
++
++out:
++	ubifs_release_lprops(c);
++	return err;
++}
++
++/**
++ * scan_for_free_cb - free space scan callback.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_for_free_cb(struct ubifs_info *c,
++			    const struct ubifs_lprops *lprops, int in_tree,
++			    struct scan_data *data)
++{
++	int ret = LPT_SCAN_CONTINUE;
++
++	/* Exclude LEBs that are currently in use */
++	if (lprops->flags & LPROPS_TAKEN)
++		return LPT_SCAN_CONTINUE;
++	/* Determine whether to add these LEB properties to the tree */
++	if (!in_tree && valuable(c, lprops))
++		ret |= LPT_SCAN_ADD;
++	/* Exclude index LEBs */
++	if (lprops->flags & LPROPS_INDEX)
++		return ret;
++	/* Exclude LEBs with too little space */
++	if (lprops->free < data->min_space)
++		return ret;
++	/* If specified, exclude empty LEBs */
++	if (!data->pick_free && lprops->free == c->leb_size)
++		return ret;
++	/*
++	 * LEBs that have only free and dirty space must not be allocated
++	 * because they may have been unmapped already or they may have data
++	 * that is obsolete only because of nodes that are still sitting in a
++	 * wbuf.
++	 */
++	if (lprops->free + lprops->dirty == c->leb_size && lprops->dirty > 0)
++		return ret;
++	/* Finally we found space */
++	data->lnum = lprops->lnum;
++	return LPT_SCAN_ADD | LPT_SCAN_STOP;
++}
++
++/**
++ * do_find_free_space - find a data LEB with free space.
++ * @c: the UBIFS file-system description object
++ * @min_space: minimum amount of free space required
++ * @pick_free: whether it is OK to scan for empty LEBs
++ * @squeeze: whether to try to find space in a non-empty LEB first
++ *
++ * This function returns a pointer to the LEB properties found or a negative
++ * error code.
++ */
++static
++const struct ubifs_lprops *do_find_free_space(struct ubifs_info *c,
++					      int min_space, int pick_free,
++					      int squeeze)
++{
++	const struct ubifs_lprops *lprops;
++	struct ubifs_lpt_heap *heap;
++	struct scan_data data;
++	int err, i;
++
++	if (squeeze) {
++		lprops = ubifs_fast_find_free(c);
++		if (lprops && lprops->free >= min_space)
++			return lprops;
++	}
++	if (pick_free) {
++		lprops = ubifs_fast_find_empty(c);
++		if (lprops)
++			return lprops;
++	}
++	if (!squeeze) {
++		lprops = ubifs_fast_find_free(c);
++		if (lprops && lprops->free >= min_space)
++			return lprops;
++	}
++	/* There may be an LEB with enough free space on the dirty heap */
++	heap = &c->lpt_heap[LPROPS_DIRTY - 1];
++	for (i = 0; i < heap->cnt; i++) {
++		lprops = heap->arr[i];
++		if (lprops->free >= min_space)
++			return lprops;
++	}
++	/*
++	 * A LEB may have fallen off of the bottom of the free heap, and ended
++	 * up as uncategorized even though it has enough free space for us now,
++	 * so check the uncategorized list. N.B. neither empty nor freeable LEBs
++	 * can end up as uncategorized because they are kept on lists not
++	 * finite-sized heaps.
++	 */
++	list_for_each_entry(lprops, &c->uncat_list, list) {
++		if (lprops->flags & LPROPS_TAKEN)
++			continue;
++		if (lprops->flags & LPROPS_INDEX)
++			continue;
++		if (lprops->free >= min_space)
++			return lprops;
++	}
++	/* We have looked everywhere in main memory, now scan the flash */
++	if (c->pnodes_have >= c->pnode_cnt)
++		/* All pnodes are in memory, so skip scan */
++		return ERR_PTR(-ENOSPC);
++	data.min_space = min_space;
++	data.pick_free = pick_free;
++	data.lnum = -1;
++	err = ubifs_lpt_scan_nolock(c, -1, c->lscan_lnum,
++				    (ubifs_lpt_scan_callback)scan_for_free_cb,
++				    &data);
++	if (err)
++		return ERR_PTR(err);
++	ubifs_assert(data.lnum >= c->main_first && data.lnum < c->leb_cnt);
++	c->lscan_lnum = data.lnum;
++	lprops = ubifs_lpt_lookup_dirty(c, data.lnum);
++	if (IS_ERR(lprops))
++		return lprops;
++	ubifs_assert(lprops->lnum == data.lnum);
++	ubifs_assert(lprops->free >= min_space);
++	ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++	ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++	return lprops;
++}
++
++/**
++ * ubifs_find_free_space - find a data LEB with free space.
++ * @c: the UBIFS file-system description object
++ * @min_space: minimum amount of required free space
++ * @free: contains amount of free space in the LEB on exit
++ * @squeeze: whether to try to find space in a non-empty LEB first
++ *
++ * This function looks for an LEB with at least @min_space bytes of free space.
++ * It tries to find an empty LEB if possible. If no empty LEBs are available,
++ * this function searches for a non-empty data LEB. The returned LEB is marked
++ * as "taken".
++ *
++ * This function returns found LEB number in case of success, %-ENOSPC if it
++ * failed to find a LEB with @min_space bytes of free space and other a negative
++ * error codes in case of failure.
++ */
++int ubifs_find_free_space(struct ubifs_info *c, int min_space, int *free,
++			  int squeeze)
++{
++	const struct ubifs_lprops *lprops;
++	int lebs, rsvd_idx_lebs, pick_free = 0, err, lnum, flags;
++
++	dbg_find("min_space %d", min_space);
++	ubifs_assert(min_space > 0 && min_space <= c->dark_wm);
++
++	ubifs_get_lprops(c);
++
++	/* Check if there are enough empty LEBs for commit */
++	spin_lock(&c->space_lock);
++	if (c->min_idx_lebs > c->lst.idx_lebs)
++		rsvd_idx_lebs = c->min_idx_lebs -  c->lst.idx_lebs;
++	else
++		rsvd_idx_lebs = 0;
++	lebs = c->lst.empty_lebs + c->freeable_cnt + c->idx_gc_cnt -
++	       c->lst.taken_empty_lebs;
++	ubifs_assert(lebs + c->lst.idx_lebs >= c->min_idx_lebs);
++	if (rsvd_idx_lebs < lebs)
++		/*
++		 * OK to allocate an empty LEB, but we still don't want to go
++		 * looking for one if there aren't any.
++		 */
++		if (c->lst.empty_lebs - c->lst.taken_empty_lebs > 0) {
++			pick_free = 1;
++			/*
++			 * Because we release the space lock, we must account
++			 * for this allocation here. After the LEB properties
++			 * flags have been updated, we subtract one. Note, the
++			 * result of this is that lprops also decreases
++			 * @taken_empty_lebs in 'ubifs_change_lp()', so it is
++			 * off by one for a short period of time which may
++			 * introduce a small disturbance to budgeting
++			 * calculations, but this is harmless because at the
++			 * worst case this would make the budgeting subsystem
++			 * be more pessimistic than needed.
++			 *
++			 * Fundamentally, this is about serialization of the
++			 * budgeting and lprops subsystems. We could make the
++			 * @space_lock a mutex and avoid dropping it before
++			 * calling 'ubifs_change_lp()', but mutex is more
++			 * heavy-weight, and we want budgeting to be as fast as
++			 * possible.
++			 */
++			c->lst.taken_empty_lebs += 1;
++		}
++	spin_unlock(&c->space_lock);
++
++	lprops = do_find_free_space(c, min_space, pick_free, squeeze);
++	if (IS_ERR(lprops)) {
++		err = PTR_ERR(lprops);
++		goto out;
++	}
++
++	lnum = lprops->lnum;
++	flags = lprops->flags | LPROPS_TAKEN;
++
++	lprops = ubifs_change_lp(c, lprops, LPROPS_NC, LPROPS_NC, flags, 0);
++	if (IS_ERR(lprops)) {
++		err = PTR_ERR(lprops);
++		goto out;
++	}
++
++	if (pick_free) {
++		spin_lock(&c->space_lock);
++		c->lst.taken_empty_lebs -= 1;
++		spin_unlock(&c->space_lock);
++	}
++
++	*free = lprops->free;
++	ubifs_release_lprops(c);
++
++	if (*free == c->leb_size) {
++		/*
++		 * Ensure that empty LEBs have been unmapped. They may not have
++		 * been, for example, because of an unclean unmount.  Also
++		 * LEBs that were freeable LEBs (free + dirty == leb_size) will
++		 * not have been unmapped.
++		 */
++		err = ubifs_leb_unmap(c, lnum);
++		if (err)
++			return err;
++	}
++
++	dbg_find("found LEB %d, free %d", lnum, *free);
++	ubifs_assert(*free >= min_space);
++	return lnum;
++
++out:
++	if (pick_free) {
++		spin_lock(&c->space_lock);
++		c->lst.taken_empty_lebs -= 1;
++		spin_unlock(&c->space_lock);
++	}
++	ubifs_release_lprops(c);
++	return err;
++}
++
++/**
++ * scan_for_idx_cb - callback used by the scan for a free LEB for the index.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_for_idx_cb(struct ubifs_info *c,
++			   const struct ubifs_lprops *lprops, int in_tree,
++			   struct scan_data *data)
++{
++	int ret = LPT_SCAN_CONTINUE;
++
++	/* Exclude LEBs that are currently in use */
++	if (lprops->flags & LPROPS_TAKEN)
++		return LPT_SCAN_CONTINUE;
++	/* Determine whether to add these LEB properties to the tree */
++	if (!in_tree && valuable(c, lprops))
++		ret |= LPT_SCAN_ADD;
++	/* Exclude index LEBS */
++	if (lprops->flags & LPROPS_INDEX)
++		return ret;
++	/* Exclude LEBs that cannot be made empty */
++	if (lprops->free + lprops->dirty != c->leb_size)
++		return ret;
++	/*
++	 * We are allocating for the index so it is safe to allocate LEBs with
++	 * only free and dirty space, because write buffers are sync'd at commit
++	 * start.
++	 */
++	data->lnum = lprops->lnum;
++	return LPT_SCAN_ADD | LPT_SCAN_STOP;
++}
++
++/**
++ * scan_for_leb_for_idx - scan for a free LEB for the index.
++ * @c: the UBIFS file-system description object
++ */
++static const struct ubifs_lprops *scan_for_leb_for_idx(struct ubifs_info *c)
++{
++	struct ubifs_lprops *lprops;
++	struct scan_data data;
++	int err;
++
++	data.lnum = -1;
++	err = ubifs_lpt_scan_nolock(c, -1, c->lscan_lnum,
++				    (ubifs_lpt_scan_callback)scan_for_idx_cb,
++				    &data);
++	if (err)
++		return ERR_PTR(err);
++	ubifs_assert(data.lnum >= c->main_first && data.lnum < c->leb_cnt);
++	c->lscan_lnum = data.lnum;
++	lprops = ubifs_lpt_lookup_dirty(c, data.lnum);
++	if (IS_ERR(lprops))
++		return lprops;
++	ubifs_assert(lprops->lnum == data.lnum);
++	ubifs_assert(lprops->free + lprops->dirty == c->leb_size);
++	ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++	ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++	return lprops;
++}
++
++/**
++ * ubifs_find_free_leb_for_idx - find a free LEB for the index.
++ * @c: the UBIFS file-system description object
++ *
++ * This function looks for a free LEB and returns that LEB number. The returned
++ * LEB is marked as "taken", "index".
++ *
++ * Only empty LEBs are allocated. This is for two reasons. First, the commit
++ * calculates the number of LEBs to allocate based on the assumption that they
++ * will be empty. Secondly, free space at the end of an index LEB is not
++ * guaranteed to be empty because it may have been used by the in-the-gaps
++ * method prior to an unclean unmount.
++ *
++ * If no LEB is found %-ENOSPC is returned. For other failures another negative
++ * error code is returned.
++ */
++int ubifs_find_free_leb_for_idx(struct ubifs_info *c)
++{
++	const struct ubifs_lprops *lprops;
++	int lnum = -1, err, flags;
++
++	ubifs_get_lprops(c);
++
++	lprops = ubifs_fast_find_empty(c);
++	if (!lprops) {
++		lprops = ubifs_fast_find_freeable(c);
++		if (!lprops) {
++			ubifs_assert(c->freeable_cnt == 0);
++			if (c->lst.empty_lebs - c->lst.taken_empty_lebs > 0) {
++				lprops = scan_for_leb_for_idx(c);
++				if (IS_ERR(lprops)) {
++					err = PTR_ERR(lprops);
++					goto out;
++				}
++			}
++		}
++	}
++
++	if (!lprops) {
++		err = -ENOSPC;
++		goto out;
++	}
++
++	lnum = lprops->lnum;
++
++	dbg_find("found LEB %d, free %d, dirty %d, flags %#x",
++		 lnum, lprops->free, lprops->dirty, lprops->flags);
++
++	flags = lprops->flags | LPROPS_TAKEN | LPROPS_INDEX;
++	lprops = ubifs_change_lp(c, lprops, c->leb_size, 0, flags, 0);
++	if (IS_ERR(lprops)) {
++		err = PTR_ERR(lprops);
++		goto out;
++	}
++
++	ubifs_release_lprops(c);
++
++	/*
++	 * Ensure that empty LEBs have been unmapped. They may not have been,
++	 * for example, because of an unclean unmount. Also LEBs that were
++	 * freeable LEBs (free + dirty == leb_size) will not have been unmapped.
++	 */
++	err = ubifs_leb_unmap(c, lnum);
++	if (err) {
++		ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0,
++				    LPROPS_TAKEN | LPROPS_INDEX, 0);
++		return err;
++	}
++
++	return lnum;
++
++out:
++	ubifs_release_lprops(c);
++	return err;
++}
++
++static int cmp_dirty_idx(const struct ubifs_lprops **a,
++			 const struct ubifs_lprops **b)
++{
++	const struct ubifs_lprops *lpa = *a;
++	const struct ubifs_lprops *lpb = *b;
++
++	return lpa->dirty + lpa->free - lpb->dirty - lpb->free;
++}
++
++static void swap_dirty_idx(struct ubifs_lprops **a, struct ubifs_lprops **b,
++			   int size)
++{
++	struct ubifs_lprops *t = *a;
++
++	*a = *b;
++	*b = t;
++}
++
++/**
++ * ubifs_save_dirty_idx_lnums - save an array of the most dirty index LEB nos.
++ * @c: the UBIFS file-system description object
++ *
++ * This function is called each commit to create an array of LEB numbers of
++ * dirty index LEBs sorted in order of dirty and free space.  This is used by
++ * the in-the-gaps method of TNC commit.
++ */
++int ubifs_save_dirty_idx_lnums(struct ubifs_info *c)
++{
++	int i;
++
++	ubifs_get_lprops(c);
++	/* Copy the LPROPS_DIRTY_IDX heap */
++	c->dirty_idx.cnt = c->lpt_heap[LPROPS_DIRTY_IDX - 1].cnt;
++	memcpy(c->dirty_idx.arr, c->lpt_heap[LPROPS_DIRTY_IDX - 1].arr,
++	       sizeof(void *) * c->dirty_idx.cnt);
++	/* Sort it so that the dirtiest is now at the end */
++	sort(c->dirty_idx.arr, c->dirty_idx.cnt, sizeof(void *),
++	     (int (*)(const void *, const void *))cmp_dirty_idx,
++	     (void (*)(void *, void *, int))swap_dirty_idx);
++	dbg_find("found %d dirty index LEBs", c->dirty_idx.cnt);
++	if (c->dirty_idx.cnt)
++		dbg_find("dirtiest index LEB is %d with dirty %d and free %d",
++			 c->dirty_idx.arr[c->dirty_idx.cnt - 1]->lnum,
++			 c->dirty_idx.arr[c->dirty_idx.cnt - 1]->dirty,
++			 c->dirty_idx.arr[c->dirty_idx.cnt - 1]->free);
++	/* Replace the lprops pointers with LEB numbers */
++	for (i = 0; i < c->dirty_idx.cnt; i++)
++		c->dirty_idx.arr[i] = (void *)(size_t)c->dirty_idx.arr[i]->lnum;
++	ubifs_release_lprops(c);
++	return 0;
++}
++
++/**
++ * scan_dirty_idx_cb - callback used by the scan for a dirty index LEB.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_dirty_idx_cb(struct ubifs_info *c,
++			   const struct ubifs_lprops *lprops, int in_tree,
++			   struct scan_data *data)
++{
++	int ret = LPT_SCAN_CONTINUE;
++
++	/* Exclude LEBs that are currently in use */
++	if (lprops->flags & LPROPS_TAKEN)
++		return LPT_SCAN_CONTINUE;
++	/* Determine whether to add these LEB properties to the tree */
++	if (!in_tree && valuable(c, lprops))
++		ret |= LPT_SCAN_ADD;
++	/* Exclude non-index LEBs */
++	if (!(lprops->flags & LPROPS_INDEX))
++		return ret;
++	/* Exclude LEBs with too little space */
++	if (lprops->free + lprops->dirty < c->min_idx_node_sz)
++		return ret;
++	/* Finally we found space */
++	data->lnum = lprops->lnum;
++	return LPT_SCAN_ADD | LPT_SCAN_STOP;
++}
++
++/**
++ * find_dirty_idx_leb - find a dirty index LEB.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB number upon success and a negative error code upon
++ * failure.  In particular, -ENOSPC is returned if a dirty index LEB is not
++ * found.
++ *
++ * Note that this function scans the entire LPT but it is called very rarely.
++ */
++static int find_dirty_idx_leb(struct ubifs_info *c)
++{
++	const struct ubifs_lprops *lprops;
++	struct ubifs_lpt_heap *heap;
++	struct scan_data data;
++	int err, i, ret;
++
++	/* Check all structures in memory first */
++	data.lnum = -1;
++	heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
++	for (i = 0; i < heap->cnt; i++) {
++		lprops = heap->arr[i];
++		ret = scan_dirty_idx_cb(c, lprops, 1, &data);
++		if (ret & LPT_SCAN_STOP)
++			goto found;
++	}
++	list_for_each_entry(lprops, &c->frdi_idx_list, list) {
++		ret = scan_dirty_idx_cb(c, lprops, 1, &data);
++		if (ret & LPT_SCAN_STOP)
++			goto found;
++	}
++	list_for_each_entry(lprops, &c->uncat_list, list) {
++		ret = scan_dirty_idx_cb(c, lprops, 1, &data);
++		if (ret & LPT_SCAN_STOP)
++			goto found;
++	}
++	if (c->pnodes_have >= c->pnode_cnt)
++		/* All pnodes are in memory, so skip scan */
++		return -ENOSPC;
++	err = ubifs_lpt_scan_nolock(c, -1, c->lscan_lnum,
++				    (ubifs_lpt_scan_callback)scan_dirty_idx_cb,
++				    &data);
++	if (err)
++		return err;
++found:
++	ubifs_assert(data.lnum >= c->main_first && data.lnum < c->leb_cnt);
++	c->lscan_lnum = data.lnum;
++	lprops = ubifs_lpt_lookup_dirty(c, data.lnum);
++	if (IS_ERR(lprops))
++		return PTR_ERR(lprops);
++	ubifs_assert(lprops->lnum == data.lnum);
++	ubifs_assert(lprops->free + lprops->dirty >= c->min_idx_node_sz);
++	ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++	ubifs_assert((lprops->flags & LPROPS_INDEX));
++
++	dbg_find("found dirty LEB %d, free %d, dirty %d, flags %#x",
++		 lprops->lnum, lprops->free, lprops->dirty, lprops->flags);
++
++	lprops = ubifs_change_lp(c, lprops, LPROPS_NC, LPROPS_NC,
++				 lprops->flags | LPROPS_TAKEN, 0);
++	if (IS_ERR(lprops))
++		return PTR_ERR(lprops);
++
++	return lprops->lnum;
++}
++
++/**
++ * get_idx_gc_leb - try to get a LEB number from trivial GC.
++ * @c: the UBIFS file-system description object
++ */
++static int get_idx_gc_leb(struct ubifs_info *c)
++{
++	const struct ubifs_lprops *lp;
++	int err, lnum;
++
++	err = ubifs_get_idx_gc_leb(c);
++	if (err < 0)
++		return err;
++	lnum = err;
++	/*
++	 * The LEB was due to be unmapped after the commit but
++	 * it is needed now for this commit.
++	 */
++	lp = ubifs_lpt_lookup_dirty(c, lnum);
++	if (unlikely(IS_ERR(lp)))
++		return PTR_ERR(lp);
++	lp = ubifs_change_lp(c, lp, LPROPS_NC, LPROPS_NC,
++			     lp->flags | LPROPS_INDEX, -1);
++	if (unlikely(IS_ERR(lp)))
++		return PTR_ERR(lp);
++	dbg_find("LEB %d, dirty %d and free %d flags %#x",
++		 lp->lnum, lp->dirty, lp->free, lp->flags);
++	return lnum;
++}
++
++/**
++ * find_dirtiest_idx_leb - find dirtiest index LEB from dirtiest array.
++ * @c: the UBIFS file-system description object
++ */
++static int find_dirtiest_idx_leb(struct ubifs_info *c)
++{
++	const struct ubifs_lprops *lp;
++	int lnum;
++
++	while (1) {
++		if (!c->dirty_idx.cnt)
++			return -ENOSPC;
++		/* The lprops pointers were replaced by LEB numbers */
++		lnum = (size_t)c->dirty_idx.arr[--c->dirty_idx.cnt];
++		lp = ubifs_lpt_lookup(c, lnum);
++		if (IS_ERR(lp))
++			return PTR_ERR(lp);
++		if ((lp->flags & LPROPS_TAKEN) || !(lp->flags & LPROPS_INDEX))
++			continue;
++		lp = ubifs_change_lp(c, lp, LPROPS_NC, LPROPS_NC,
++				     lp->flags | LPROPS_TAKEN, 0);
++		if (IS_ERR(lp))
++			return PTR_ERR(lp);
++		break;
++	}
++	dbg_find("LEB %d, dirty %d and free %d flags %#x", lp->lnum, lp->dirty,
++		 lp->free, lp->flags);
++	ubifs_assert(lp->flags | LPROPS_TAKEN);
++	ubifs_assert(lp->flags | LPROPS_INDEX);
++	return lnum;
++}
++
++/**
++ * ubifs_find_dirty_idx_leb - try to find dirtiest index LEB as at last commit.
++ * @c: the UBIFS file-system description object
++ *
++ * This function attempts to find an untaken index LEB with the most free and
++ * dirty space that can be used without overwriting index nodes that were in the
++ * last index committed.
++ */
++int ubifs_find_dirty_idx_leb(struct ubifs_info *c)
++{
++	int err;
++
++	ubifs_get_lprops(c);
++
++	/*
++	 * We made an array of the dirtiest index LEB numbers as at the start of
++	 * last commit.  Try that array first.
++	 */
++	err = find_dirtiest_idx_leb(c);
++
++	/* Next try scanning the entire LPT */
++	if (err == -ENOSPC)
++		err = find_dirty_idx_leb(c);
++
++	/* Finally take any index LEBs awaiting trivial GC */
++	if (err == -ENOSPC)
++		err = get_idx_gc_leb(c);
++
++	ubifs_release_lprops(c);
++	return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/gc.c avr32-2.6/fs/ubifs/gc.c
+--- linux-2.6.25.6/fs/ubifs/gc.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/gc.c	2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,762 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements garbage collection. The procedure for garbage collection
++ * is different depending on whether a LEB as an index LEB (contains index
++ * nodes) or not. For non-index LEBs, garbage collection finds a LEB which
++ * contains a lot of dirty space (obsolete nodes), and copies the non-obsolete
++ * nodes to the journal, at which point the garbage-collected LEB is free to be
++ * reused. For index LEBs, garbage collection marks the non-obsolete index nodes
++ * dirty in the TNC, and after the next commit, the garbage-collected LEB is
++ * to be reused. Garbage collection will cause the number of dirty index nodes
++ * to grow, however sufficient space is reserved for the index to ensure the
++ * commit will never run out of space.
++ */
++
++#include <linux/pagemap.h>
++#include "ubifs.h"
++
++/*
++ * GC tries to optimize the way it fit nodes to available space, and it sorts
++ * nodes a little. The below constants are watermarks which define "large",
++ * "medium", and "small" nodes.
++ */
++#define MEDIUM_NODE_WM (UBIFS_BLOCK_SIZE / 4)
++#define SMALL_NODE_WM  UBIFS_MAX_DENT_NODE_SZ
++
++/*
++ * GC may need to move more then one LEB to make progress. The below constants
++ * define "soft" and "hard" limits on the number of LEBs the garbage collector
++ * may move.
++ */
++#define SOFT_LEBS_LIMIT 4
++#define HARD_LEBS_LIMIT 32
++
++/**
++ * switch_gc_head - switch the garbage collection journal head.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to write
++ * @len: length of the buffer to write
++ * @lnum: LEB number written is returned here
++ * @offs: offset written is returned here
++ *
++ * This function switch the GC head to the next LEB which is reserved in
++ * @c->gc_lnum. Returns %0 in case of success, %-EAGAIN if commit is required,
++ * and other negative error code in case of failures.
++ */
++static int switch_gc_head(struct ubifs_info *c)
++{
++	int err, gc_lnum = c->gc_lnum;
++	struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++
++	ubifs_assert(gc_lnum != -1);
++	dbg_gc("switch GC head from LEB %d:%d to LEB %d (waste %d bytes)",
++	       wbuf->lnum, wbuf->offs + wbuf->used, gc_lnum,
++	       c->leb_size - wbuf->offs - wbuf->used);
++
++	err = ubifs_wbuf_sync_nolock(wbuf);
++	if (err)
++		return err;
++
++	/*
++	 * The GC write-buffer was synchronized, we may safely unmap
++	 * 'c->gc_lnum'.
++	 */
++	err = ubifs_leb_unmap(c, gc_lnum);
++	if (err)
++		return err;
++
++	err = ubifs_add_bud_to_log(c, GCHD, gc_lnum, 0);
++	if (err)
++		return err;
++
++	c->gc_lnum = -1;
++	err = ubifs_wbuf_seek_nolock(wbuf, gc_lnum, 0, UBI_LONGTERM);
++	return err;
++}
++
++/**
++ * move_nodes - move nodes.
++ * @c: UBIFS file-system description object
++ * @sleb: describes nodes to move
++ *
++ * This function moves valid nodes from data LEB described by @sleb to the GC
++ * journal head. The obsolete nodes are dropped.
++ *
++ * When moving nodes we have to deal with classical bin-packing problem: the
++ * space in the current GC journal head LEB and in @c->gc_lnum are the "bins",
++ * where the nodes in the @sleb->nodes list are the elements which should be
++ * fit optimally to the bins. This function uses the "first fit decreasing"
++ * strategy, although it does not really sort the nodes but just split them on
++ * 3 classes - large, medium, and small, so they are roughly sorted.
++ *
++ * This function returns zero in case of success, %-EAGAIN if commit is
++ * required, and other negative error codes in case of other failures.
++ */
++static int move_nodes(struct ubifs_info *c, struct ubifs_scan_leb *sleb)
++{
++	struct ubifs_scan_node *snod, *tmp;
++	struct list_head large, medium, small;
++	struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++	int avail, err, min = INT_MAX;
++
++	INIT_LIST_HEAD(&large);
++	INIT_LIST_HEAD(&medium);
++	INIT_LIST_HEAD(&small);
++
++	list_for_each_entry_safe(snod, tmp, &sleb->nodes, list) {
++		struct list_head *lst;
++
++		ubifs_assert(snod->type != UBIFS_IDX_NODE);
++		ubifs_assert(snod->type != UBIFS_REF_NODE);
++		ubifs_assert(snod->type != UBIFS_CS_NODE);
++
++		err = ubifs_tnc_has_node(c, &snod->key, 0, sleb->lnum,
++					 snod->offs, 0);
++		if (err < 0)
++			goto out;
++
++		lst = &snod->list;
++		list_del(lst);
++		if (!err) {
++			/* The node is obsolete, remove it from the list */
++			kfree(snod);
++			continue;
++		}
++
++		/*
++		 * Sort the list of nodes so that large nodes go first, and
++		 * small nodes go last.
++		 */
++		if (snod->len > MEDIUM_NODE_WM)
++			list_add(lst, &large);
++		else if (snod->len > SMALL_NODE_WM)
++			list_add(lst, &medium);
++		else
++			list_add(lst, &small);
++
++		/* And find the smallest node */
++		if (snod->len < min)
++			min = snod->len;
++	}
++
++	/*
++	 * Join the tree lists so that we'd have one roughly sorted list
++	 * ('large' will be the head of the joined list).
++	 */
++	list_splice(&medium, large.prev);
++	list_splice(&small, large.prev);
++
++	if (wbuf->lnum == -1) {
++		/*
++		 * The GC journal head is not set, because it is the first GC
++		 * invocation since mount.
++		 */
++		err = switch_gc_head(c);
++		if (err)
++			goto out;
++	}
++
++	/* Write nodes to their new location. Use the first-fit strategy */
++	while (1) {
++		avail = c->leb_size - wbuf->offs - wbuf->used;
++		list_for_each_entry_safe(snod, tmp, &large, list) {
++			int new_lnum, new_offs;
++
++			if (avail < min)
++				break;
++
++			if (snod->len > avail)
++				/* This node does not fit */
++				continue;
++
++			cond_resched();
++
++			new_lnum = wbuf->lnum;
++			new_offs = wbuf->offs + wbuf->used;
++				err = ubifs_wbuf_write_nolock(wbuf, snod->node,
++						      snod->len);
++
++			err = ubifs_tnc_replace(c, &snod->key, sleb->lnum,
++						snod->offs, new_lnum, new_offs,
++						snod->len);
++			if (err)
++				goto out;
++
++			avail = c->leb_size - wbuf->offs - wbuf->used;
++			list_del(&snod->list);
++			kfree(snod);
++		}
++
++		if (list_empty(&large))
++			break;
++
++		/*
++		 * Waste the rest of the space in the LEB and switch to the
++		 * next LEB.
++		 */
++		err = switch_gc_head(c);
++		if (err)
++			goto out;
++	}
++
++	return 0;
++
++out:
++	list_for_each_entry_safe(snod, tmp, &large, list) {
++		list_del(&snod->list);
++		kfree(snod);
++	}
++	return err;
++}
++
++/**
++ * gc_sync_wbufs - sync write-buffers for GC.
++ * @c: UBIFS file-system description object
++ *
++ * We must guarantee that obsoleting nodes are on flash. Unfortunately they may
++ * be in a write-buffer instead. That is, a node could be written to a
++ * write-buffer, obsoleting another node in a LEB that is GC'd. If that LEB is
++ * erased before the write-buffer is sync'd and then there is an unclean
++ * unmount, then an existing node is lost. To avoid this, we sync all
++ * write-buffers.
++ *
++ * This function returns %0 on success or a negative error code on failure.
++ */
++static int gc_sync_wbufs(struct ubifs_info *c)
++{
++	int err, i;
++
++	for (i = 0; i < c->jhead_cnt; i++) {
++		if (i == GCHD)
++			continue;
++		err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++		if (err)
++			return err;
++	}
++	return 0;
++}
++
++/**
++ * ubifs_garbage_collect_leb - garbage-collect a logical eraseblock.
++ * @c: UBIFS file-system description object
++ * @lp: describes the LEB to garbage collect
++ *
++ * This function garbage-collects an LEB and returns one of the @LEB_FREED,
++ * @LEB_RETAINED, etc positive codes in case of success, %-EAGAIN if commit is
++ * required, and other negative error codes in case of failures.
++ */
++int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp)
++{
++	struct ubifs_scan_leb *sleb;
++	struct ubifs_scan_node *snod;
++	struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++	int err = 0, lnum = lp->lnum;
++
++	ubifs_assert(c->gc_lnum != -1 || wbuf->offs + wbuf->used == 0 ||
++		     c->need_recovery);
++	ubifs_assert(c->gc_lnum != lnum);
++	ubifs_assert(wbuf->lnum != lnum);
++
++	/*
++	 * We scan the entire LEB even though we only really need to scan up to
++	 * (c->leb_size - lp->free).
++	 */
++	sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++	if (IS_ERR(sleb))
++		return PTR_ERR(sleb);
++
++	ubifs_assert(!list_empty(&sleb->nodes));
++	snod = list_entry(sleb->nodes.next, struct ubifs_scan_node, list);
++
++	if (snod->type == UBIFS_IDX_NODE) {
++		struct ubifs_gced_idx_leb *idx_gc;
++
++		dbg_gc("indexing LEB %d (free %d, dirty %d)",
++		       lnum, lp->free, lp->dirty);
++		list_for_each_entry(snod, &sleb->nodes, list) {
++			struct ubifs_idx_node *idx = snod->node;
++			int level = le16_to_cpu(idx->level);
++
++			ubifs_assert(snod->type == UBIFS_IDX_NODE);
++			key_read(c, ubifs_idx_key(c, idx), &snod->key);
++			err = ubifs_dirty_idx_node(c, &snod->key, level, lnum,
++						   snod->offs);
++			if (err)
++				goto out;
++		}
++
++		idx_gc = kmalloc(sizeof(struct ubifs_gced_idx_leb), GFP_NOFS);
++		if (!idx_gc) {
++			err = -ENOMEM;
++			goto out;
++		}
++
++		idx_gc->lnum = lnum;
++		idx_gc->unmap = 0;
++		list_add(&idx_gc->list, &c->idx_gc);
++
++		/*
++		 * Don't release the LEB until after the next commit, because
++		 * it may contain date which is needed for recovery. So
++		 * although we freed this LEB, it will become usable only after
++		 * the commit.
++		 */
++		err = ubifs_change_one_lp(c, lnum, c->leb_size, 0, 0,
++					  LPROPS_INDEX, 1);
++		if (err)
++			goto out;
++		err = LEB_FREED_IDX;
++	} else {
++		dbg_gc("data LEB %d (free %d, dirty %d)",
++		       lnum, lp->free, lp->dirty);
++
++		err = move_nodes(c, sleb);
++		if (err)
++			goto out;
++
++		err = gc_sync_wbufs(c);
++		if (err)
++			goto out;
++
++		err = ubifs_change_one_lp(c, lnum, c->leb_size, 0, 0, 0, 0);
++		if (err)
++			goto out;
++
++		if (c->gc_lnum == -1) {
++			c->gc_lnum = lnum;
++			err = LEB_RETAINED;
++		} else {
++			err = ubifs_wbuf_sync_nolock(wbuf);
++			if (err)
++				goto out;
++
++			err = ubifs_leb_unmap(c, lnum);
++			if (err)
++				goto out;
++
++			err = LEB_FREED;
++		}
++	}
++
++out:
++	ubifs_scan_destroy(sleb);
++	return err;
++}
++
++/**
++ * ubifs_garbage_collect - UBIFS garbage collector.
++ * @c: UBIFS file-system description object
++ * @anyway: do GC even if there are free LEBs
++ *
++ * This function does out-of-place garbage collection. The return codes are:
++ *   o positive LEB number if the LEB has been freed and may be used;
++ *   o %-EAGAIN if the caller has to run commit;
++ *   o %-ENOSPC if GC failed to make any progress;
++ *   o other negative error codes in case of other errors.
++ *
++ * Garbage collector writes data to the journal when GC'ing data LEBs, and just
++ * marking indexing nodes dirty when GC'ing indexing LEBs. Thus, at some point
++ * commit may be required. But commit cannot be run from inside GC, because the
++ * caller might be holding the commit lock, so %-EAGAIN is returned instead;
++ * And this error code means that the caller has to run commit, and re-run GC
++ * if there is still no free space.
++ *
++ * There are many reasons why this function may return %-EAGAIN:
++ * o the log is full and there is no space to write an LEB reference for
++ *   @c->gc_lnum;
++ * o the journal is too large and exceeds size limitations;
++ * o GC moved indexing LEBs, but they can be used only after the commit;
++ * o the shrinker fails to find clean znodes to free and requests the commit;
++ * o etc.
++ *
++ * Note, if the file-system is close to be full, this function may return
++ * %-EAGAIN infinitely, so the caller has to limit amount of re-invocations of
++ * the function. E.g., this happens if the limits on the journal size are too
++ * tough and GC writes too much to the journal before an LEB is freed. This
++ * might also mean that the journal is too large, and the TNC becomes to big,
++ * so that the shrinker is constantly called, finds not clean znodes to free,
++ * and requests commit. Well, this may also happen if the journal is all right,
++ * but another kernel process consumes too much memory. Anyway, infinite
++ * %-EAGAIN may happen, but in some extreme/misconfiguration cases.
++ */
++int ubifs_garbage_collect(struct ubifs_info *c, int anyway)
++{
++	int i, err, ret, min_space = c->dead_wm;
++	struct ubifs_lprops lp;
++	struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++
++	ubifs_assert_cmt_locked(c);
++
++	if (ubifs_gc_should_commit(c))
++		return -EAGAIN;
++
++	mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++	/* We expect the write-buffer to be empty on entry */
++	ubifs_assert(!wbuf->used);
++
++	for (i = 0; ; i++) {
++		int space_before = c->leb_size - wbuf->offs - wbuf->used;
++		int space_after;
++
++		cond_resched();
++
++		/* Give the commit an opportunity to run */
++		if (ubifs_gc_should_commit(c)) {
++			ret = -EAGAIN;
++			break;
++		}
++
++		if (i > SOFT_LEBS_LIMIT && !list_empty(&c->idx_gc)) {
++			/*
++			 * We've done enough iterations. Indexing LEBs were
++			 * moved and will be available after the commit.
++			 */
++			dbg_gc("soft limit, some index LEBs GC'ed, -EAGAIN");
++			ubifs_commit_required(c);
++			ret = -EAGAIN;
++			break;
++		}
++
++		if (i > HARD_LEBS_LIMIT) {
++			/*
++			 * We've moved too many LEBs and have not made
++			 * progress, give up.
++			 */
++			dbg_gc("hard limit, -ENOSPC");
++			ret = -ENOSPC;
++			break;
++		}
++
++		/*
++		 * Empty and freeable LEBs can turn up while we waited for
++		 * the wbuf lock, or while we have been running GC. In that
++		 * case, we should just return one of those instead of
++		 * continuing to GC dirty LEBs. Hence we request
++		 * 'ubifs_find_dirty_leb()' to return an empty LEB if it can.
++		 */
++		ret = ubifs_find_dirty_leb(c, &lp, min_space, anyway ? 0 : 1);
++		if (ret) {
++			if (ret == -ENOSPC)
++				dbg_gc("no more dirty LEBs");
++			break;
++		}
++
++		dbg_gc("found LEB %d: free %d, dirty %d, sum %d "
++		       "(min. space %d)", lp.lnum, lp.free, lp.dirty,
++		       lp.free + lp.dirty, min_space);
++
++		if (lp.free + lp.dirty == c->leb_size) {
++			/* An empty LEB was returned */
++			dbg_gc("LEB %d is free, return it", lp.lnum);
++			/*
++			 * ubifs_find_dirty_leb() doesn't return freeable index
++			 * LEBs.
++			 */
++			ubifs_assert(!(lp.flags & LPROPS_INDEX));
++			if (lp.free != c->leb_size) {
++				/*
++				 * Write buffers must be sync'd before
++				 * unmapping freeable LEBs, because one of them
++				 * may contain data which obsoletes something
++				 * in 'lp.pnum'.
++				 */
++				ret = gc_sync_wbufs(c);
++				if (ret)
++					goto out;
++				ret = ubifs_change_one_lp(c, lp.lnum,
++							  c->leb_size, 0, 0, 0,
++							  0);
++				if (ret)
++					goto out;
++			}
++			ret = ubifs_leb_unmap(c, lp.lnum);
++			if (ret)
++				goto out;
++			ret = lp.lnum;
++			break;
++		}
++
++		space_before = c->leb_size - wbuf->offs - wbuf->used;
++		if (wbuf->lnum == -1)
++			space_before = 0;
++
++		ret = ubifs_garbage_collect_leb(c, &lp);
++		if (ret < 0) {
++			if (ret == -EAGAIN || ret == -ENOSPC) {
++				/*
++				 * These codes are not errors, so we have to
++				 * return the LEB to lprops. But if the
++				 * 'ubifs_return_leb()' function fails, its
++				 * failure code is propagated to the caller
++				 * instead of the original '-EAGAIN' or
++				 * '-ENOSPC'.
++				 */
++				err = ubifs_return_leb(c, lp.lnum);
++				if (err)
++					ret = err;
++				break;
++			}
++			goto out;
++		}
++
++		if (ret == LEB_FREED) {
++			/* An LEB has been freed and is ready for use */
++			dbg_gc("LEB %d freed, return", lp.lnum);
++			ret = lp.lnum;
++			break;
++		}
++
++		if (ret == LEB_FREED_IDX) {
++			/*
++			 * This was an indexing LEB and it cannot be
++			 * immediately used. And instead of requesting the
++			 * commit straight away, we try to garbage collect some
++			 * more.
++			 */
++			dbg_gc("indexing LEB %d freed, continue", lp.lnum);
++			continue;
++		}
++
++		ubifs_assert(ret == LEB_RETAINED);
++		space_after = c->leb_size - wbuf->offs - wbuf->used;
++		dbg_gc("LEB %d retained, freed %d bytes", lp.lnum,
++		       space_after - space_before);
++
++		if (space_after > space_before) {
++			/* GC makes progress, keep working */
++			min_space >>= 1;
++			if (min_space < c->dead_wm)
++				min_space = c->dead_wm;
++			continue;
++		}
++
++		dbg_gc("did not make progress");
++
++		/*
++		 * GC moved an LEB bud have not done any progress. This means
++		 * that the previous GC head LEB contained too few free space
++		 * and the LEB which was GC'ed contained only large nodes which
++		 * did not fit that space.
++		 *
++		 * We can do 2 things:
++		 * 1. pick another LEB in a hope it'll contain a small node
++		 *    which will fit the space we have at the end of current GC
++		 *    head LEB, but there is no guarantee, so we try this out
++		 *    unless we have already been working for too long;
++		 * 2. request an LEB with more dirty space, which will force
++		 *    'ubifs_find_dirty_leb()' to start scanning the lprops
++		 *    table, instead of just picking one from the heap
++		 *    (previously it already picked the dirtiest LEB).
++		 */
++		if (i < SOFT_LEBS_LIMIT) {
++			dbg_gc("try again");
++			continue;
++		}
++
++		min_space <<= 1;
++		if (min_space > c->dark_wm)
++			min_space = c->dark_wm;
++		dbg_gc("set min. space to %d", min_space);
++	}
++
++	if (ret == -ENOSPC && !list_empty(&c->idx_gc)) {
++		dbg_gc("no space, some index LEBs GC'ed, -EAGAIN");
++		ubifs_commit_required(c);
++		ret = -EAGAIN;
++	}
++
++	err = ubifs_wbuf_sync_nolock(wbuf);
++	if (!err)
++		err = ubifs_leb_unmap(c, c->gc_lnum);
++	if (err)
++		ret = err;
++	mutex_unlock(&wbuf->io_mutex);
++	return ret;
++
++out:
++	ubifs_assert(ret < 0);
++	ubifs_assert(ret != -ENOSPC && ret != -EAGAIN);
++	ubifs_wbuf_sync_nolock(wbuf);
++	mutex_unlock(&wbuf->io_mutex);
++	ubifs_return_leb(c, lp.lnum);
++	return ret;
++}
++
++/**
++ * ubifs_gc_start_commit - garbage collection at start of commit.
++ * @c: UBIFS file-system description object
++ *
++ * If a LEB has only dirty and free space, then we may safely unmap it and make
++ * it free.  Note, we cannot do this with indexing LEBs because dirty space may
++ * correspond index nodes that are required for recovery.  In that case, the
++ * LEB cannot be unmapped until after the next commit.
++ *
++ * This function returns %0 upon success and a negative error code upon failure.
++ */
++int ubifs_gc_start_commit(struct ubifs_info *c)
++{
++	struct ubifs_gced_idx_leb *idx_gc;
++	const struct ubifs_lprops *lp;
++	int err = 0, flags;
++
++	ubifs_get_lprops(c);
++
++	/*
++	 * Unmap (non-index) freeable LEBs. Note that recovery requires that all
++	 * wbufs are sync'd before this, which is done in 'do_commit()'.
++	 */
++	while (1) {
++		lp = ubifs_fast_find_freeable(c);
++		if (unlikely(IS_ERR(lp))) {
++			err = PTR_ERR(lp);
++			goto out;
++		}
++		if (!lp)
++			break;
++		ubifs_assert(!(lp->flags & LPROPS_TAKEN));
++		ubifs_assert(!(lp->flags & LPROPS_INDEX));
++		err = ubifs_leb_unmap(c, lp->lnum);
++		if (err)
++			goto out;
++		lp = ubifs_change_lp(c, lp, c->leb_size, 0, lp->flags, 0);
++		if (unlikely(IS_ERR(lp))) {
++			err = PTR_ERR(lp);
++			goto out;
++		}
++		ubifs_assert(!(lp->flags & LPROPS_TAKEN));
++		ubifs_assert(!(lp->flags & LPROPS_INDEX));
++	}
++
++	/* Mark GC'd index LEBs OK to unmap after this commit finishes */
++	list_for_each_entry(idx_gc, &c->idx_gc, list)
++		idx_gc->unmap = 1;
++
++	/* Record index freeable LEBs for unmapping after commit */
++	while (1) {
++		lp = ubifs_fast_find_frdi_idx(c);
++		if (unlikely(IS_ERR(lp))) {
++			err = PTR_ERR(lp);
++			goto out;
++		}
++		if (!lp)
++			break;
++		idx_gc = kmalloc(sizeof(struct ubifs_gced_idx_leb), GFP_NOFS);
++		if (!idx_gc) {
++			err = -ENOMEM;
++			goto out;
++		}
++		ubifs_assert(!(lp->flags & LPROPS_TAKEN));
++		ubifs_assert(lp->flags & LPROPS_INDEX);
++		/* Don't release the LEB until after the next commit */
++		flags = (lp->flags | LPROPS_TAKEN) ^ LPROPS_INDEX;
++		lp = ubifs_change_lp(c, lp, c->leb_size, 0, flags, 1);
++		if (unlikely(IS_ERR(lp))) {
++			err = PTR_ERR(lp);
++			kfree(idx_gc);
++			goto out;
++		}
++		ubifs_assert(lp->flags & LPROPS_TAKEN);
++		ubifs_assert(!(lp->flags & LPROPS_INDEX));
++		idx_gc->lnum = lp->lnum;
++		idx_gc->unmap = 1;
++		list_add(&idx_gc->list, &c->idx_gc);
++	}
++out:
++	ubifs_release_lprops(c);
++	return err;
++}
++
++/**
++ * ubifs_gc_end_commit - garbage collection at end of commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function completes out-of-place garbage collection of index LEBs.
++ */
++int ubifs_gc_end_commit(struct ubifs_info *c)
++{
++	struct ubifs_gced_idx_leb *idx_gc, *tmp;
++	struct ubifs_wbuf *wbuf;
++	int err = 0;
++
++	wbuf = &c->jheads[GCHD].wbuf;
++	mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++	list_for_each_entry_safe(idx_gc, tmp, &c->idx_gc, list)
++		if (idx_gc->unmap) {
++			dbg_gc("LEB %d", idx_gc->lnum);
++			err = ubifs_leb_unmap(c, idx_gc->lnum);
++			if (err)
++				goto out;
++			err = ubifs_change_one_lp(c, idx_gc->lnum, LPROPS_NC,
++					  LPROPS_NC, 0, LPROPS_TAKEN, -1);
++			if (err)
++				goto out;
++			list_del(&idx_gc->list);
++			kfree(idx_gc);
++		}
++out:
++	mutex_unlock(&wbuf->io_mutex);
++	return err;
++}
++
++/**
++ * ubifs_destroy_idx_gc - destroy idx_gc list.
++ * @c: UBIFS file-system description object
++ *
++ * This function destroys the idx_gc list. It is called when unmounting or
++ * remounting read-only so locks are not needed.
++ */
++void ubifs_destroy_idx_gc(struct ubifs_info *c)
++{
++	while (!list_empty(&c->idx_gc)) {
++		struct ubifs_gced_idx_leb *idx_gc;
++
++		idx_gc = list_entry(c->idx_gc.next, struct ubifs_gced_idx_leb,
++				    list);
++		c->idx_gc_cnt -= 1;
++		list_del(&idx_gc->list);
++		kfree(idx_gc);
++	}
++
++}
++
++/**
++ * ubifs_get_idx_gc_leb - get a LEB from GC'd index LEB list.
++ * @c: UBIFS file-system description object
++ *
++ * Called during start commit so locks are not needed.
++ */
++int ubifs_get_idx_gc_leb(struct ubifs_info *c)
++{
++	struct ubifs_gced_idx_leb *idx_gc;
++	int lnum;
++
++	if (list_empty(&c->idx_gc))
++		return -ENOSPC;
++	idx_gc = list_entry(c->idx_gc.next, struct ubifs_gced_idx_leb, list);
++	lnum = idx_gc->lnum;
++	/* c->idx_gc_cnt is updated by the caller when lprops are updated */
++	list_del(&idx_gc->list);
++	kfree(idx_gc);
++	return lnum;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/io.c avr32-2.6/fs/ubifs/io.c
+--- linux-2.6.25.6/fs/ubifs/io.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/io.c	2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,921 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ * Copyright (C) 2006, 2007 University of Szeged, Hungary
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ *          Zoltan Sogor
++ */
++
++/*
++ * This file implements UBIFS I/O subsystem which provides various I/O-related
++ * helper functions (reading/writing/checking/validating nodes) and implements
++ * write-buffering support. Write buffers help to save space which otherwise
++ * would have been wasted for padding to the nearest minimal I/O unit boundary.
++ * Instead, data first goes to the write-buffer and is flushed when the
++ * buffer is full or when it is not used for some time (by timer). This is
++ * similarto the mechanism is used by JFFS2.
++ *
++ * Write-buffers are defined by 'struct ubifs_wbuf' objects and protected by
++ * mutexes defined inside these objects. Since sometimes upper-level code
++ * has to lock the write-buffer (e.g. journal space reservation code), many
++ * functions related to write-buffers have "nolock" suffix which means that the
++ * caller has to lock the write-buffer before calling this function.
++ *
++ * UBIFS stores nodes at 64 bit-aligned addresses. If the node length is not
++ * aligned, UBIFS starts the next node from the aligned address, and the padded
++ * bytes may contain any rubbish. In other words, UBIFS does not put padding
++ * bytes in those small gaps. Common headers of nodes store real node lengths,
++ * not aligned lengths. Indexing nodes also store real lengths in branches.
++ *
++ * UBIFS uses padding when it pads to the next min. I/O unit. In this case it
++ * uses padding nodes or padding bytes, if the padding node does not fit.
++ *
++ * All UBIFS nodes are protected by CRC checksums and UBIFS checks all nodes
++ * every time they are read from the flash media.
++ */
++
++#include <linux/crc32.h>
++#include "ubifs.h"
++
++/**
++ * ubifs_check_node - check node.
++ * @c: UBIFS file-system description object
++ * @buf: node to check
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ * @quiet: print no messages
++ *
++ * This function checks node magic number and CRC checksum. This function also
++ * validates node length to prevent UBIFS from becoming crazy when an attacker
++ * feeds it a file-system image with incorrect nodes. For example, too large
++ * node length in the common header could cause UBIFS to read memory outside of
++ * allocated buffer when checking the CRC checksum.
++ *
++ * This function returns zero in case of success %-EUCLEAN in case of bad CRC
++ * or magic.
++ */
++int ubifs_check_node(const struct ubifs_info *c, const void *buf, int lnum,
++		     int offs, int quiet)
++{
++	int err = -EINVAL, type, node_len;
++	uint32_t crc, node_crc, magic;
++	const struct ubifs_ch *ch = buf;
++
++	ubifs_assert(lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
++	ubifs_assert(!(offs & 7) && offs < c->leb_size);
++
++	magic = le32_to_cpu(ch->magic);
++	if (magic != UBIFS_NODE_MAGIC) {
++		if (!quiet)
++			ubifs_err("bad magic %#08x, expected %#08x",
++				  magic, UBIFS_NODE_MAGIC);
++		err = -EUCLEAN;
++		goto out;
++	}
++
++	type = ch->node_type;
++	if (type < 0 || type >= UBIFS_NODE_TYPES_CNT) {
++		if (!quiet)
++			ubifs_err("bad node type %d", type);
++		goto out;
++	}
++
++	node_len = le32_to_cpu(ch->len);
++	if (node_len + offs > c->leb_size)
++		goto out_len;
++
++	if (c->ranges[type].max_len == 0) {
++		if (node_len != c->ranges[type].len)
++			goto out_len;
++	} else if (node_len < c->ranges[type].min_len ||
++		   node_len > c->ranges[type].max_len)
++		goto out_len;
++
++	crc = crc32(UBIFS_CRC32_INIT, buf + 8, node_len - 8);
++	node_crc = le32_to_cpu(ch->crc);
++	if (crc != node_crc) {
++		if (!quiet)
++			ubifs_err("bad CRC: calculated %#08x, read %#08x",
++				  crc, node_crc);
++		err = -EUCLEAN;
++		goto out;
++	}
++
++	return 0;
++
++out_len:
++	if (!quiet)
++		ubifs_err("bad node length %d", node_len);
++out:
++	if (!quiet) {
++		ubifs_err("bad node at LEB %d:%d", lnum, offs);
++		dbg_dump_node(c, buf);
++		dbg_dump_stack();
++	}
++	return err;
++}
++
++/**
++ * ubifs_pad - pad flash space.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to put padding to
++ * @pad: how many bytes to pad
++ *
++ * The flash media obliges us to write only in chunks of %c->min_io_size and
++ * when we have to write less data we add padding node to the write-buffer and
++ * pad it to the next minimal I/O unit's boundary. Padding nodes help when the
++ * media is being scanned. If the amount of wasted space is not enough to fit a
++ * padding node which takes %UBIFS_PAD_NODE_SZ bytes, we write padding bytes
++ * pattern (%UBIFS_PADDING_BYTE).
++ *
++ * Padding nodes are also used to fill gaps when the "commit-in-gaps" method is
++ * used.
++ */
++void ubifs_pad(const struct ubifs_info *c, void *buf, int pad)
++{
++	uint32_t crc;
++
++	ubifs_assert(pad >= 0 && !(pad & 7));
++
++	if (pad >= UBIFS_PAD_NODE_SZ) {
++		struct ubifs_ch *ch = buf;
++		struct ubifs_pad_node *pad_node = buf;
++
++		ch->magic = cpu_to_le32(UBIFS_NODE_MAGIC);
++		ch->node_type = UBIFS_PAD_NODE;
++		ch->group_type = UBIFS_NO_NODE_GROUP;
++		ch->padding[0] = ch->padding[1] = 0;
++		ch->sqnum = 0;
++		ch->len = cpu_to_le32(UBIFS_PAD_NODE_SZ);
++		pad -= UBIFS_PAD_NODE_SZ;
++		pad_node->pad_len = cpu_to_le32(pad);
++		crc = crc32(UBIFS_CRC32_INIT, buf + 8, UBIFS_PAD_NODE_SZ - 8);
++		ch->crc = cpu_to_le32(crc);
++		memset(buf + UBIFS_PAD_NODE_SZ, 0, pad);
++	} else if (pad > 0)
++		/* Too little space, padding node won't fit */
++		memset(buf, UBIFS_PADDING_BYTE, pad);
++}
++
++/**
++ * next_sqnum - get next sequence number.
++ * @c: UBIFS file-system description object
++ */
++static unsigned long long next_sqnum(struct ubifs_info *c)
++{
++	unsigned long long sqnum;
++
++	spin_lock(&c->cnt_lock);
++	sqnum = ++c->max_sqnum;
++	spin_unlock(&c->cnt_lock);
++
++	if (unlikely(sqnum >= SQNUM_WARN_WATERMARK)) {
++		if (sqnum >= SQNUM_WATERMARK) {
++			ubifs_err("sequence number overflow %llu, end of life",
++				  sqnum);
++			ubifs_ro_mode(c, -EINVAL);
++		}
++		ubifs_warn("running out of sequence numbers, end of life soon");
++	}
++
++	return sqnum;
++}
++
++/**
++ * ubifs_prepare_node - prepare node to be written to flash.
++ * @c: UBIFS file-system description object
++ * @node: the node to pad
++ * @len: node length
++ * @pad: if the buffer has to be padded
++ *
++ * This function prepares node at @node to be written to the media - it
++ * calculates node CRC, fills the common header, and adds proper padding up to
++ * the next minimum I/O unit if @pad is not zero.
++ */
++void ubifs_prepare_node(struct ubifs_info *c, void *node, int len, int pad)
++{
++	uint32_t crc;
++	struct ubifs_ch *ch = node;
++	unsigned long long sqnum = next_sqnum(c);
++
++	ubifs_assert(len >= UBIFS_CH_SZ);
++
++	ch->magic = cpu_to_le32(UBIFS_NODE_MAGIC);
++	ch->len = cpu_to_le32(len);
++	ch->group_type = UBIFS_NO_NODE_GROUP;
++	ch->sqnum = cpu_to_le64(sqnum);
++	ch->padding[0] = ch->padding[1] = 0;
++	crc = crc32(UBIFS_CRC32_INIT, node + 8, len - 8);
++	ch->crc = cpu_to_le32(crc);
++
++	if (pad) {
++		len = ALIGN(len, 8);
++		pad = ALIGN(len, c->min_io_size) - len;
++		ubifs_pad(c, node + len, pad);
++	}
++}
++
++/**
++ * ubifs_prep_grp_node - prepare node of a group to be written to flash.
++ * @c: UBIFS file-system description object
++ * @node: the node to pad
++ * @len: node length
++ * @last: indicates the last node of the group
++ *
++ * This function prepares node at @node to be written to the media - it
++ * calculates node CRC and fills the common header.
++ */
++void ubifs_prep_grp_node(struct ubifs_info *c, void *node, int len, int last)
++{
++	uint32_t crc;
++	struct ubifs_ch *ch = node;
++	unsigned long long sqnum = next_sqnum(c);
++
++	ubifs_assert(len >= UBIFS_CH_SZ);
++
++	ch->magic = cpu_to_le32(UBIFS_NODE_MAGIC);
++	ch->len = cpu_to_le32(len);
++	if (last)
++		ch->group_type = UBIFS_LAST_OF_NODE_GROUP;
++	else
++		ch->group_type = UBIFS_IN_NODE_GROUP;
++	ch->sqnum = cpu_to_le64(sqnum);
++	ch->padding[0] = ch->padding[1] = 0;
++	crc = crc32(UBIFS_CRC32_INIT, node + 8, len - 8);
++	ch->crc = cpu_to_le32(crc);
++}
++
++/**
++ * wbuf_timer_callback - write-buffer timer callback function.
++ * @data: timer data (write-buffer descriptor)
++ *
++ * This function is called when the write-buffer timer expires.
++ */
++static void wbuf_timer_callback_nolock(unsigned long data)
++{
++	struct ubifs_wbuf *wbuf = (struct ubifs_wbuf *)data;
++
++	wbuf->need_sync = 1;
++	wbuf->c->need_wbuf_sync = 1;
++	ubifs_wake_up_bgt(wbuf->c);
++}
++
++/**
++ * new_wbuf_timer - start new write-buffer timer.
++ * @wbuf: write-buffer descriptor
++ */
++static void new_wbuf_timer_nolock(struct ubifs_wbuf *wbuf)
++{
++	ubifs_assert(!timer_pending(&wbuf->timer));
++
++	if (!wbuf->timeout)
++		return;
++
++	wbuf->timer.expires = jiffies + wbuf->timeout;
++	add_timer(&wbuf->timer);
++}
++
++/**
++ * cancel_wbuf_timer - cancel write-buffer timer.
++ * @wbuf: write-buffer descriptor
++ */
++static void cancel_wbuf_timer_nolock(struct ubifs_wbuf *wbuf)
++{
++	/*
++	 * If the syncer is waiting for the lock (from the background thread's
++	 * context) and another task is changing write-buffer then the syncing
++	 * should be canceled.
++	 */
++	wbuf->need_sync = 0;
++	del_timer(&wbuf->timer);
++}
++
++/**
++ * ubifs_wbuf_sync_nolock - synchronize write-buffer.
++ * @wbuf: write-buffer to synchronize
++ *
++ * This function synchronizes write-buffer @buf and returns zero in case of
++ * success or a negative error code in case of failure.
++ */
++int ubifs_wbuf_sync_nolock(struct ubifs_wbuf *wbuf)
++{
++	struct ubifs_info *c = wbuf->c;
++	int err, dirt;
++
++	cancel_wbuf_timer_nolock(wbuf);
++	if (!wbuf->used || wbuf->lnum == -1)
++		/* Write-buffer is empty or not seeked */
++		return 0;
++
++	dbg_io("LEB %d:%d, %d bytes",
++	       wbuf->lnum, wbuf->offs, wbuf->used);
++	ubifs_assert(!(c->vfs_sb->s_flags & MS_RDONLY));
++	ubifs_assert(!(wbuf->avail & 7));
++	ubifs_assert(wbuf->offs + c->min_io_size <= c->leb_size);
++
++	if (c->ro_media)
++		return -EROFS;
++
++	ubifs_pad(c, wbuf->buf + wbuf->used, wbuf->avail);
++	err = ubi_leb_write(c->ubi, wbuf->lnum, wbuf->buf, wbuf->offs,
++			    c->min_io_size, wbuf->dtype);
++	if (err) {
++		ubifs_err("cannot write %d bytes to LEB %d:%d",
++			  c->min_io_size, wbuf->lnum, wbuf->offs);
++		dbg_dump_stack();
++		return err;
++	}
++
++	dirt = wbuf->avail;
++
++	spin_lock(&wbuf->lock);
++	wbuf->offs += c->min_io_size;
++	wbuf->avail = c->min_io_size;
++	wbuf->used = 0;
++	wbuf->next_ino = 0;
++	spin_unlock(&wbuf->lock);
++
++	if (wbuf->sync_callback)
++		err = wbuf->sync_callback(c, wbuf->lnum,
++					  c->leb_size - wbuf->offs, dirt);
++	return err;
++}
++
++/**
++ * ubifs_wbuf_seek_nolock - seek write-buffer.
++ * @wbuf: write-buffer
++ * @lnum: logical eraseblock number to seek to
++ * @offs: logical eraseblock offset to seek to
++ * @dtype: data type
++ *
++ * This function targets the write buffer to logical eraseblock @lnum:@offs.
++ * The write-buffer is synchronized if it is not empty. Returns zero in case of
++ * success and a negative error code in case of failure.
++ */
++int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs,
++			   int dtype)
++{
++	const struct ubifs_info *c = wbuf->c;
++
++	dbg_io("LEB %d:%d", lnum, offs);
++	ubifs_assert(lnum >= 0 && lnum < c->leb_cnt);
++	ubifs_assert(offs >= 0 && offs <= c->leb_size);
++	ubifs_assert(offs % c->min_io_size == 0 && !(offs & 7));
++	ubifs_assert(lnum != wbuf->lnum);
++
++	if (wbuf->used > 0) {
++		int err = ubifs_wbuf_sync_nolock(wbuf);
++
++		if (err)
++			return err;
++	}
++
++	spin_lock(&wbuf->lock);
++	wbuf->lnum = lnum;
++	wbuf->offs = offs;
++	wbuf->avail = c->min_io_size;
++	wbuf->used = 0;
++	spin_unlock(&wbuf->lock);
++	wbuf->dtype = dtype;
++
++	return 0;
++}
++
++/**
++ * ubifs_bg_wbufs_sync - synchronize write-buffers.
++ * @c: UBIFS file-system description object
++ *
++ * This function is called by background thread to synchronize write-buffers.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++int ubifs_bg_wbufs_sync(struct ubifs_info *c)
++{
++	int err, i;
++
++	if (!c->need_wbuf_sync)
++		return 0;
++	c->need_wbuf_sync = 0;
++
++	if (c->ro_media) {
++		err = -EROFS;
++		goto out_timers;
++	}
++
++	dbg_io("synchronize");
++	for (i = 0; i < c->jhead_cnt; i++) {
++		struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf;
++
++		cond_resched();
++
++		/*
++		 * If the mutex is locked then wbuf is being changed, so
++		 * synchronization is not necessary.
++		 */
++		if (mutex_is_locked(&wbuf->io_mutex))
++			continue;
++
++		mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++		if (!wbuf->need_sync) {
++			mutex_unlock(&wbuf->io_mutex);
++			continue;
++		}
++
++		err = ubifs_wbuf_sync_nolock(wbuf);
++		mutex_unlock(&wbuf->io_mutex);
++		if (err) {
++			ubifs_err("cannot sync write-buffer, error %d", err);
++			ubifs_ro_mode(c, err);
++			goto out_timers;
++		}
++	}
++
++	return 0;
++
++out_timers:
++	/* Cancel all timers to prevent repeated errors */
++	for (i = 0; i < c->jhead_cnt; i++) {
++		struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf;
++
++		mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++		cancel_wbuf_timer_nolock(wbuf);
++		mutex_unlock(&wbuf->io_mutex);
++	}
++	return err;
++}
++
++/**
++ * ubifs_wbuf_write_nolock - write data to flash via write-buffer.
++ * @wbuf: write-buffer
++ * @buf: node to write
++ * @len: node length
++ *
++ * This function writes data to flash via write-buffer @wbuf. This means that
++ * the last piece of the node won't reach the flash media immediately if it
++ * does not take whole minimal I/O unit. Instead, the node will sit in RAM
++ * until the write-buffer is synchronized (e.g., by timer).
++ *
++ * This function returns zero in case of success and a negative error code in
++ * case of failure. If the node cannot be written because there is no more
++ * space in this logical eraseblock, %-ENOSPC is returned.
++ */
++int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len)
++{
++	struct ubifs_info *c = wbuf->c;
++	int err, written, n, aligned_len = ALIGN(len, 8), offs;
++
++	dbg_io("%d bytes (%s) to wbuf at LEB %d:%d", len,
++	       dbg_ntype(((struct ubifs_ch *)buf)->node_type), wbuf->lnum,
++	       wbuf->offs + wbuf->used);
++	ubifs_assert(len > 0 && wbuf->lnum >= 0 && wbuf->lnum < c->leb_cnt);
++	ubifs_assert(wbuf->offs >= 0 && wbuf->offs % c->min_io_size == 0);
++	ubifs_assert(!(wbuf->offs & 7) && wbuf->offs <= c->leb_size);
++	ubifs_assert(wbuf->avail > 0 && wbuf->avail <= c->min_io_size);
++	ubifs_assert(mutex_is_locked(&wbuf->io_mutex));
++
++	if (c->leb_size - wbuf->offs - wbuf->used < aligned_len) {
++		err = -ENOSPC;
++		goto out;
++	}
++
++	cancel_wbuf_timer_nolock(wbuf);
++
++	if (c->ro_media)
++		return -EROFS;
++
++	if (aligned_len <= wbuf->avail) {
++		/*
++		 * The node is not very large and fits entirely within
++		 * write-buffer.
++		 */
++		memcpy(wbuf->buf + wbuf->used, buf, len);
++
++		if (aligned_len == wbuf->avail) {
++			dbg_io("flush wbuf to LEB %d:%d", wbuf->lnum,
++				wbuf->offs);
++			err = ubi_leb_write(c->ubi, wbuf->lnum, wbuf->buf,
++					    wbuf->offs, c->min_io_size,
++					    wbuf->dtype);
++			if (err)
++				goto out;
++
++			spin_lock(&wbuf->lock);
++			wbuf->offs += c->min_io_size;
++			wbuf->avail = c->min_io_size;
++			wbuf->used = 0;
++			wbuf->next_ino = 0;
++			spin_unlock(&wbuf->lock);
++		} else {
++			spin_lock(&wbuf->lock);
++			wbuf->avail -= aligned_len;
++			wbuf->used += aligned_len;
++			spin_unlock(&wbuf->lock);
++		}
++
++		goto exit;
++	}
++
++	/*
++	 * The node is large enough and does not fit entirely within current
++	 * minimal I/O unit. We have to fill and flush write-buffer and switch
++	 * to the next min. I/O unit.
++	 */
++	dbg_io("flush wbuf to LEB %d:%d", wbuf->lnum, wbuf->offs);
++	memcpy(wbuf->buf + wbuf->used, buf, wbuf->avail);
++	err = ubi_leb_write(c->ubi, wbuf->lnum, wbuf->buf, wbuf->offs,
++			    c->min_io_size, wbuf->dtype);
++	if (err)
++		goto out;
++
++	offs = wbuf->offs + c->min_io_size;
++	len -= wbuf->avail;
++	aligned_len -= wbuf->avail;
++	written = wbuf->avail;
++
++	/*
++	 * The remaining data may take more whole min. I/O units, so write the
++	 * remains multiple to min. I/O unit size directly to the flash media.
++	 * We align node length to 8-byte boundary because we anyway flash wbuf
++	 * if the remaining space is less than 8 bytes.
++	 */
++	n = aligned_len >> c->min_io_shift;
++	if (n) {
++		n <<= c->min_io_shift;
++		dbg_io("write %d bytes to LEB %d:%d", n, wbuf->lnum, offs);
++		err = ubi_leb_write(c->ubi, wbuf->lnum, buf + written, offs, n,
++				    wbuf->dtype);
++		if (err)
++			goto out;
++		offs += n;
++		aligned_len -= n;
++		len -= n;
++		written += n;
++	}
++
++	spin_lock(&wbuf->lock);
++	if (aligned_len)
++		/*
++		 * And now we have what's left and what does not take whole
++		 * min. I/O unit, so write it to the write-buffer and we are
++		 * done.
++		 */
++		memcpy(wbuf->buf, buf + written, len);
++
++	wbuf->offs = offs;
++	wbuf->used = aligned_len;
++	wbuf->avail = c->min_io_size - aligned_len;
++	wbuf->next_ino = 0;
++	spin_unlock(&wbuf->lock);
++
++exit:
++	if (wbuf->sync_callback) {
++		int free = c->leb_size - wbuf->offs - wbuf->used;
++
++		err = wbuf->sync_callback(c, wbuf->lnum, free, 0);
++		if (err)
++			goto out;
++	}
++
++	if (wbuf->used)
++		new_wbuf_timer_nolock(wbuf);
++
++	return 0;
++
++out:
++	ubifs_err("cannot write %d bytes to LEB %d:%d, error %d",
++		  len, wbuf->lnum, wbuf->offs, err);
++	dbg_dump_node(c, buf);
++	dbg_dump_stack();
++	dbg_dump_leb(c, wbuf->lnum);
++	return err;
++}
++
++/**
++ * ubifs_write_node - write node to the media.
++ * @c: UBIFS file-system description object
++ * @buf: the node to write
++ * @len: node length
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ * @dtype: node life-time hint (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN)
++ *
++ * This function automatically fills node magic number, assigns sequence
++ * number, and calculates node CRC checksum. The length of the @buf buffer has
++ * to be aligned to the minimal I/O unit size. This function automatically
++ * appends padding node and padding bytes if needed. Returns zero in case of
++ * success and a negative error code in case of failure.
++ */
++int ubifs_write_node(struct ubifs_info *c, void *buf, int len, int lnum,
++		     int offs, int dtype)
++{
++	int err, buf_len = ALIGN(len, c->min_io_size);
++
++	dbg_io("LEB %d:%d, %s, length %d (aligned %d)",
++	       lnum, offs, dbg_ntype(((struct ubifs_ch *)buf)->node_type), len,
++	       buf_len);
++	ubifs_assert(lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
++	ubifs_assert(offs % c->min_io_size == 0 && offs < c->leb_size);
++
++	if (c->ro_media)
++		return -EROFS;
++
++	ubifs_prepare_node(c, buf, len, 1);
++	err = ubi_leb_write(c->ubi, lnum, buf, offs, buf_len, dtype);
++	if (err) {
++		ubifs_err("cannot write %d bytes to LEB %d:%d, error %d",
++			  buf_len, lnum, offs, err);
++		dbg_dump_node(c, buf);
++		dbg_dump_stack();
++	}
++
++	return err;
++}
++
++/**
++ * ubifs_read_node_wbuf - read node from the media or write-buffer.
++ * @wbuf: wbuf to check for un-written data
++ * @buf: buffer to read to
++ * @type: node type
++ * @len: node length
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ *
++ * This function reads a node of known type and length, checks it and stores
++ * in @buf. If the node partially or fully sits in the write-buffer, this
++ * function takes data from the buffer, otherwise it reads the flash media.
++ * Returns zero in case of success, %-EUCLEAN if CRC mismatched and a negative
++ * error code in case of failure.
++ */
++int ubifs_read_node_wbuf(struct ubifs_wbuf *wbuf, void *buf, int type, int len,
++			 int lnum, int offs)
++{
++	const struct ubifs_info *c = wbuf->c;
++	int err, rlen, overlap;
++	struct ubifs_ch *ch = buf;
++
++	dbg_io("LEB %d:%d, %s, length %d", lnum, offs, dbg_ntype(type), len);
++	ubifs_assert(wbuf && lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
++	ubifs_assert(!(offs & 7) && offs < c->leb_size);
++	ubifs_assert(type >= 0 && type < UBIFS_NODE_TYPES_CNT);
++
++	spin_lock(&wbuf->lock);
++	overlap = (lnum == wbuf->lnum && offs + len > wbuf->offs);
++	if (!overlap) {
++		/* We may safely unlock the write-buffer and read the data */
++		spin_unlock(&wbuf->lock);
++		return ubifs_read_node(c, buf, type, len, lnum, offs);
++	}
++
++	/* Don't read under wbuf */
++	rlen = wbuf->offs - offs;
++	if (rlen < 0)
++		rlen = 0;
++
++	/* Copy the rest from the write-buffer */
++	memcpy(buf + rlen, wbuf->buf + offs + rlen - wbuf->offs, len - rlen);
++	spin_unlock(&wbuf->lock);
++
++	if (rlen > 0) {
++		/* Read everything that goes before write-buffer */
++		err = ubi_read(c->ubi, lnum, buf, offs, rlen);
++		if (err && err != -EBADMSG) {
++			ubifs_err("failed to read node %d from LEB %d:%d, "
++				  "error %d", type, lnum, offs, err);
++			dbg_dump_stack();
++			return err;
++		}
++	}
++
++	err = ubifs_check_node(c, buf, lnum, offs, 0);
++	if (err) {
++		ubifs_err("expected node type %d", type);
++		return err;
++	}
++
++	if (type != ch->node_type) {
++		ubifs_err("bad node type (%d but expected %d)",
++			  ch->node_type, type);
++		goto out;
++	}
++
++	rlen = le32_to_cpu(ch->len);
++	if (rlen != len) {
++		ubifs_err("bad node length %d, expected %d", rlen, len);
++		goto out;
++	}
++
++	return 0;
++
++out:
++	ubifs_err("bad node at LEB %d:%d", lnum, offs);
++	dbg_dump_node(c, buf);
++	dbg_dump_stack();
++	return -EINVAL;
++}
++
++/**
++ * ubifs_read_node - read node.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to read to
++ * @type: node type
++ * @len: node length (not aligned)
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ *
++ * This function reads a node of known type and and length, checks it and
++ * stores in @buf. Returns zero in case of success, %-EUCLEAN if CRC mismatched
++ * and a negative error code in case of failure.
++ */
++int ubifs_read_node(const struct ubifs_info *c, void *buf, int type, int len,
++		    int lnum, int offs)
++{
++	int err, l;
++	struct ubifs_ch *ch = buf;
++
++	dbg_io("LEB %d:%d, %s, length %d", lnum, offs, dbg_ntype(type), len);
++	ubifs_assert(lnum >= 0 && lnum < c->leb_cnt && offs >= 0);
++	ubifs_assert(len >= UBIFS_CH_SZ && offs + len <= c->leb_size);
++	ubifs_assert(!(offs & 7) && offs < c->leb_size);
++	ubifs_assert(type >= 0 && type < UBIFS_NODE_TYPES_CNT);
++
++	err = ubi_read(c->ubi, lnum, buf, offs, len);
++	if (err && err != -EBADMSG) {
++		ubifs_err("cannot read node %d from LEB %d:%d, error %d",
++			  type, lnum, offs, err);
++		return err;
++	}
++
++	err = ubifs_check_node(c, buf, lnum, offs, 0);
++	if (err) {
++		ubifs_err("expected node type %d", type);
++		return err;
++	}
++
++	if (type != ch->node_type) {
++		ubifs_err("bad node type (%d but expected %d)",
++			  ch->node_type, type);
++		goto out;
++	}
++
++	l = le32_to_cpu(ch->len);
++	if (l != len) {
++		ubifs_err("bad node length %d, expected %d", l, len);
++		goto out;
++	}
++
++	return 0;
++
++out:
++	ubifs_err("bad node at LEB %d:%d", lnum, offs);
++	dbg_dump_node(c, buf);
++	dbg_dump_stack();
++	return -EINVAL;
++}
++
++/**
++ * ubifs_wbuf_init - initialize write-buffer.
++ * @c: UBIFS file-system description object
++ * @wbuf: write-buffer to initialize
++ *
++ * This function initializes write buffer. Returns zero in case of success
++ * %-ENOMEM in case of failure.
++ */
++int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf)
++{
++	size_t size;
++
++	wbuf->buf = kmalloc(c->min_io_size, GFP_KERNEL);
++	if (!wbuf->buf)
++		return -ENOMEM;
++
++	size = (c->min_io_size / UBIFS_CH_SZ + 1) * sizeof(ino_t);
++	wbuf->inodes = kmalloc(size, GFP_KERNEL);
++	if (!wbuf->inodes) {
++		kfree(wbuf->buf);
++		wbuf->buf = NULL;
++		return -ENOMEM;
++	}
++
++	wbuf->used = 0;
++	wbuf->lnum = wbuf->offs = -1;
++	wbuf->avail = c->min_io_size;
++	wbuf->dtype = UBI_UNKNOWN;
++	wbuf->sync_callback = NULL;
++	mutex_init(&wbuf->io_mutex);
++	spin_lock_init(&wbuf->lock);
++
++	wbuf->c = c;
++	init_timer(&wbuf->timer);
++	wbuf->timer.function = wbuf_timer_callback_nolock;
++	wbuf->timer.data = (unsigned long)wbuf;
++	wbuf->timeout = DEFAULT_WBUF_TIMEOUT;
++	wbuf->next_ino = 0;
++
++	return 0;
++}
++
++/**
++ * ubifs_wbuf_add_ino_nolock - add an inode number into the wbuf inode array.
++ * @wbuf: the write-buffer whereto add
++ * @inum: the inode number
++ *
++ * This function adds an inode number to the inode array of the write-buffer.
++ */
++void ubifs_wbuf_add_ino_nolock(struct ubifs_wbuf *wbuf, ino_t inum)
++{
++	if (!wbuf->buf)
++		/* NOR flash or something similar */
++		return;
++
++	spin_lock(&wbuf->lock);
++	if (wbuf->used)
++		wbuf->inodes[wbuf->next_ino++] = inum;
++	spin_unlock(&wbuf->lock);
++}
++
++/**
++ * wbuf_has_ino - returns if the wbuf contains data from the inode.
++ * @wbuf: the write-buffer
++ * @inum: the inode number
++ *
++ * This function returns with %1 if the write-buffer contains some data from the
++ * given inode otherwise it returns with %0.
++ */
++static int wbuf_has_ino(struct ubifs_wbuf *wbuf, ino_t inum)
++{
++	int i, ret = 0;
++
++	spin_lock(&wbuf->lock);
++	for (i = 0; i < wbuf->next_ino; i++)
++		if (inum == wbuf->inodes[i]) {
++			ret = 1;
++			break;
++		}
++	spin_unlock(&wbuf->lock);
++
++	return ret;
++}
++
++/**
++ * ubifs_sync_wbufs_by_inodes - synchronize write-buffers which have data.
++ * belonging to specified inodes.
++ * @c: UBIFS file-system description object
++ * @inodes: array of inodes
++ * @count: number of elements in @inodes
++ *
++ * This function synchronizes write-buffers which contain nodes belonging to
++ * any inode specified in @inodes array. Returns zero in case of success and a
++ * negative error code in case of failure.
++ */
++int ubifs_sync_wbufs_by_inodes(struct ubifs_info *c,
++			       struct inode * const *inodes, int count)
++{
++	int i, j, err = 0;
++
++	ubifs_assert(count);
++
++	for (i = 0; i < c->jhead_cnt; i++) {
++		struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf;
++
++		if (i == GCHD)
++			/*
++			 * GC head is special, do not look at it. Even if the
++			 * head contains something related to this inode, it is
++			 * a _copy_ of corresponding on-flash node which sits
++			 * somewhere else.
++			 */
++			continue;
++
++		for (j = 0; j < count && !err; j++)
++			if (wbuf_has_ino(wbuf, inodes[j]->i_ino)) {
++				mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++				if (wbuf_has_ino(wbuf, inodes[j]->i_ino))
++					err = ubifs_wbuf_sync_nolock(wbuf);
++				mutex_unlock(&wbuf->io_mutex);
++				break;
++			}
++
++		if (err) {
++			ubifs_ro_mode(c, err);
++			break;
++		}
++	}
++
++	return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/ioctl.c avr32-2.6/fs/ubifs/ioctl.c
+--- linux-2.6.25.6/fs/ubifs/ioctl.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/ioctl.c	2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,204 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ * Copyright (C) 2006, 2007 University of Szeged, Hungary
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Zoltan Sogor
++ *          Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/* This file implements EXT2-compatible extended attribute ioctl() calls */
++
++#include <linux/compat.h>
++#include <linux/smp_lock.h>
++#include "ubifs.h"
++
++/**
++ * ubifs_set_inode_flags - set VFS inode flags.
++ * @inode: VFS inode to set flags for
++ *
++ * This function propagates flags from UBIFS inode object to VFS inode object.
++ */
++void ubifs_set_inode_flags(struct inode *inode)
++{
++	unsigned int flags = ubifs_inode(inode)->flags;
++
++	inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_DIRSYNC);
++	if (flags & UBIFS_SYNC_FL)
++		inode->i_flags |= S_SYNC;
++	if (flags & UBIFS_APPEND_FL)
++		inode->i_flags |= S_APPEND;
++	if (flags & UBIFS_IMMUTABLE_FL)
++		inode->i_flags |= S_IMMUTABLE;
++	if (flags & UBIFS_DIRSYNC_FL)
++		inode->i_flags |= S_DIRSYNC;
++}
++
++/*
++ * ioctl2ubifs - convert ioctl inode flags to UBIFS inode flags.
++ * @ioctl_flags: flags to convert
++ *
++ * This function convert ioctl flags (@FS_COMPR_FL, etc) to UBIFS inode flags
++ * (@UBIFS_COMPR_FL, etc).
++ */
++static int ioctl2ubifs(int ioctl_flags)
++{
++	int ubifs_flags = 0;
++
++	if (ioctl_flags & FS_COMPR_FL)
++		ubifs_flags |= UBIFS_COMPR_FL;
++	if (ioctl_flags & FS_SYNC_FL)
++		ubifs_flags |= UBIFS_SYNC_FL;
++	if (ioctl_flags & FS_APPEND_FL)
++		ubifs_flags |= UBIFS_APPEND_FL;
++	if (ioctl_flags & FS_IMMUTABLE_FL)
++		ubifs_flags |= UBIFS_IMMUTABLE_FL;
++	if (ioctl_flags & FS_DIRSYNC_FL)
++		ubifs_flags |= UBIFS_DIRSYNC_FL;
++
++	return ubifs_flags;
++}
++
++/*
++ * ubifs2ioctl - convert UBIFS inode flags to ioctl inode flags.
++ * @ubifs_flags: flags to convert
++ *
++ * This function convert UBIFS (@UBIFS_COMPR_FL, etc) to ioctl flags
++ * (@FS_COMPR_FL, etc).
++ */
++static int ubifs2ioctl(int ubifs_flags)
++{
++	int ioctl_flags = 0;
++
++	if (ubifs_flags & UBIFS_COMPR_FL)
++		ioctl_flags |= FS_COMPR_FL;
++	if (ubifs_flags & UBIFS_SYNC_FL)
++		ioctl_flags |= FS_SYNC_FL;
++	if (ubifs_flags & UBIFS_APPEND_FL)
++		ioctl_flags |= FS_APPEND_FL;
++	if (ubifs_flags & UBIFS_IMMUTABLE_FL)
++		ioctl_flags |= FS_IMMUTABLE_FL;
++	if (ubifs_flags & UBIFS_DIRSYNC_FL)
++		ioctl_flags |= FS_DIRSYNC_FL;
++
++	return ioctl_flags;
++}
++
++static int setflags(struct inode *inode, int flags)
++{
++	struct ubifs_inode *ui = ubifs_inode(inode);
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	struct ubifs_budget_req req;
++	int oldflags, err;
++
++	mutex_lock(&inode->i_mutex);
++
++	memset(&req, 0 , sizeof(struct ubifs_budget_req));
++	err = ubifs_budget_inode_op(c, inode, &req);
++	if (err)
++		goto out;
++
++	/*
++	 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
++	 * the relevant capability.
++	 */
++	oldflags = ubifs2ioctl(ui->flags);
++	if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
++		if (!capable(CAP_LINUX_IMMUTABLE)) {
++			err = -EPERM;
++			goto out_budg;
++		}
++	}
++
++	ui->flags = ioctl2ubifs(flags);
++	ubifs_set_inode_flags(inode);
++
++	inode->i_ctime = ubifs_current_time(inode);
++	mark_inode_dirty_sync(inode);
++
++	ubifs_release_ino_dirty(c, inode, &req);
++
++	if (IS_SYNC(inode))
++		err = write_inode_now(inode, 1);
++
++	mutex_unlock(&inode->i_mutex);
++	return err;
++
++out_budg:
++	ubifs_cancel_ino_op(c, inode, &req);
++out:
++	ubifs_err("can't modify inode %lu attributes", inode->i_ino);
++	mutex_unlock(&inode->i_mutex);
++	return err;
++}
++
++long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++	int flags;
++	struct inode *inode = file->f_path.dentry->d_inode;
++
++	switch (cmd) {
++	case FS_IOC_GETFLAGS:
++		flags = ubifs2ioctl(ubifs_inode(inode)->flags);
++
++		return put_user(flags, (int __user *) arg);
++
++	case FS_IOC_SETFLAGS: {
++		if (IS_RDONLY(inode))
++			return -EROFS;
++
++		if (!is_owner_or_cap(inode))
++			return -EACCES;
++
++		if (get_user(flags, (int __user *) arg))
++			return -EFAULT;
++
++		if (!S_ISDIR(inode->i_mode))
++			flags &= ~FS_DIRSYNC_FL;
++
++		return setflags(inode, flags);
++	}
++
++	default:
++		return -ENOTTY;
++	}
++}
++
++#ifdef CONFIG_COMPAT
++long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++	int err;
++
++	switch (cmd) {
++	case FS_IOC32_GETFLAGS:
++		cmd = FS_IOC_GETFLAGS;
++		break;
++	case FS_IOC32_SETFLAGS:
++		cmd = FS_IOC_SETFLAGS;
++		break;
++	default:
++		return -ENOIOCTLCMD;
++	}
++
++	lock_kernel();
++	err = ubifs_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
++	unlock_kernel();
++
++	return err;
++}
++#endif
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/journal.c avr32-2.6/fs/ubifs/journal.c
+--- linux-2.6.25.6/fs/ubifs/journal.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/journal.c	2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,1286 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file implements UBIFS journal.
++ *
++ * The journal consists of 2 parts - the log and bud LEBs. The log has fixed
++ * length and position, while a bud logical eraseblock is any LEB in the main
++ * area. Buds contain file system data - data nodes, inode nodes, etc. The log
++ * contains only references to buds and some other stuff like commit
++ * start node. The idea is that when we commit the journal, we do
++ * not copy the data, the buds just become indexed. Since after the commit the
++ * nodes in bud eraseblocks become leaf nodes of the file system index tree, we
++ * use term "bud". Analogy is obvious, bud eraseblocks contain nodes which will
++ * become leafs in the future.
++ *
++ * The journal is multi-headed because we want to write data to the journal as
++ * optimally as possible. It is nice to have nodes belonging to the same inode
++ * in one LEB, so we may write data owned by different inodes to different
++ * journal heads, although at present only one data head is used.
++ *
++ * For recovery reasons, the base head contains all inode nodes, all directory
++ * entry nodes and all truncate nodes.  This means that the other heads contain
++ * only data nodes.
++ *
++ * Bud LEBs may be half-indexed. For example, if the bud was not full at the
++ * time of commit, the bud is retained to continue to be used in the journal,
++ * even though the "front" of the LEB is now indexed. In that case, the log
++ * reference contains the offset where the bud starts for the purposes of the
++ * journal.
++ *
++ * The journal size has to be limited, because the larger is the journal, the
++ * longer it takes to mount UBIFS (scanning the journal) and the more memory it
++ * takes (indexing in the TNC).
++ *
++ * Note, all the journal write operations like 'ubifs_jnl_update()' here, which
++ * write multiple UBIFS nodes to the journal at one go, are atomic with respect
++ * to unclean reboots. Should the unclean reboot happen, the recovery code drops
++ * all the nodes.
++ */
++
++#include "ubifs.h"
++
++/**
++ * zero_ino_node_unused - zero out unused fields of an on-flash inode node.
++ * @ino: the inode to zero out
++ */
++static inline void zero_ino_node_unused(struct ubifs_ino_node *ino)
++{
++	memset(ino->padding, 0, 26);
++}
++
++/**
++ * zero_dent_node_unused - zero out unused fields of an on-flash directory
++ *                         entry node.
++ * @ino: the directory entry to zero out
++ */
++static inline void zero_dent_node_unused(struct ubifs_dent_node *dent)
++{
++	dent->padding1 = 0;
++	memset(dent->padding2, 0, 4);
++}
++
++/**
++ * zero_data_node_unused - zero out unused fields of an on-flash data node.
++ * @ino: the data node to zero out
++ */
++static inline void zero_data_node_unused(struct ubifs_data_node *data)
++{
++	memset(data->padding, 0, 2);
++}
++
++/**
++ * zero_trun_node_unused - zero out unused fields of an on-flash truncation
++ *                         node.
++ * @ino: the truncation node to zero out
++ */
++static inline void zero_trun_node_unused(struct ubifs_trun_node *trun)
++{
++	memset(trun->padding, 0, 12);
++}
++
++/**
++ * reserve_space - reserve space in the journal.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head number
++ * @len: node length
++ *
++ * This function reserves space in journal head @head. If the reservation
++ * succeeded, the journal head stays locked and later has to be unlocked using
++ * 'release_head()'. 'write_node()' and 'write_head()' functions also unlock
++ * it. Returns zero in case of success, %-EAGAIN if commit has to be done, and
++ * other negative error codes in case of other failures.
++ */
++static int reserve_space(struct ubifs_info *c, int jhead, int len)
++{
++	int err = 0, err1, retries = 0, avail, lnum, offs, free, squeeze;
++	struct ubifs_wbuf *wbuf = &c->jheads[jhead].wbuf;
++
++	/*
++	 * Typically, the base head has smaller nodes written to it, so it is
++	 * better to try to allocate space at the ends of eraseblocks. This is
++	 * what the squeeze parameter does.
++	 */
++	squeeze = (jhead == BASEHD);
++again:
++	mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++	avail = c->leb_size - wbuf->offs - wbuf->used;
++
++	if (wbuf->lnum != -1 && avail >= len)
++		return 0;
++
++	/*
++	 * Write buffer wasn't seek'ed or there is no enough space - look for an
++	 * LEB with some empty space.
++	 */
++	lnum = ubifs_find_free_space(c, len, &free, squeeze);
++	if (lnum >= 0) {
++		/* Found an LEB, add it to the journal head */
++		offs = c->leb_size - free;
++		err = ubifs_add_bud_to_log(c, jhead, lnum, offs);
++		if (err)
++			goto out_return;
++		/* A new bud was successfully allocated and added to the log */
++		goto out;
++	}
++
++	err = lnum;
++	if (err != -ENOSPC)
++		goto out_unlock;
++
++	/*
++	 * No free space, we have to run garbage collector to make
++	 * some. But the write-buffer mutex has to be unlocked because
++	 * GC have to sync write buffers, which may lead a deadlock.
++	 */
++	dbg_jnl("no free space  jhead %d, run GC", jhead);
++	mutex_unlock(&wbuf->io_mutex);
++
++	lnum = ubifs_garbage_collect(c, 0);
++	if (lnum < 0) {
++		err = lnum;
++		if (err != -ENOSPC)
++			return err;
++
++		/*
++		 * GC could not make a free LEB. But someone else may
++		 * have allocated new bud for this journal head,
++		 * because we dropped the 'io_mutex', so try once
++		 * again.
++		 */
++		dbg_jnl("GC couldn't make a free LEB for jhead %d", jhead);
++		if (retries++ < 2) {
++			dbg_jnl("retry (%d)", retries);
++			goto again;
++		}
++
++		dbg_jnl("return -ENOSPC");
++		return err;
++	}
++
++	mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++	dbg_jnl("got LEB %d for jhead %d", lnum, jhead);
++	avail = c->leb_size - wbuf->offs - wbuf->used;
++
++	if (wbuf->lnum != -1 && avail >= len) {
++		/*
++		 * Someone else has switched the journal head and we have
++		 * enough space now. This happens when more then one process is
++		 * trying to write to the same journal head at the same time.
++		 */
++		dbg_jnl("return LEB %d back, already have LEB %d:%d",
++			lnum, wbuf->lnum, wbuf->offs + wbuf->used);
++		err = ubifs_return_leb(c, lnum);
++		if (err)
++			goto out_unlock;
++		return 0;
++	}
++
++	err = ubifs_add_bud_to_log(c, jhead, lnum, 0);
++	if (err)
++		goto out_return;
++	offs = 0;
++
++out:
++	err = ubifs_wbuf_seek_nolock(wbuf, lnum, offs, UBI_SHORTTERM);
++	if (err)
++		goto out_unlock;
++
++	return 0;
++
++out_unlock:
++	mutex_unlock(&wbuf->io_mutex);
++	return err;
++
++out_return:
++	/* An error occurred and the LEB has to be returned to lprops */
++	ubifs_assert(err < 0);
++	err1 = ubifs_return_leb(c, lnum);
++	if (err1 && err == -EAGAIN)
++		/*
++		 * Return original error code 'err' only if it is not
++		 * '-EAGAIN', which is not really an error. Otherwise, return
++		 * the error code of 'ubifs_return_leb()'.
++		 */
++		err = err1;
++	mutex_unlock(&wbuf->io_mutex);
++	return err;
++}
++
++/**
++ * write_node - write node to a journal head.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head
++ * @node: node to write
++ * @len: node length
++ * @lnum: LEB number written is returned here
++ * @offs: offset written is returned here
++ *
++ * This function writes a node to reserved space of journal head @jhead.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int write_node(struct ubifs_info *c, int jhead, void *node, int len,
++		      int *lnum, int *offs)
++{
++	struct ubifs_wbuf *wbuf = &c->jheads[jhead].wbuf;
++
++	ubifs_assert(jhead != GCHD);
++
++	*lnum = c->jheads[jhead].wbuf.lnum;
++	*offs = c->jheads[jhead].wbuf.offs + c->jheads[jhead].wbuf.used;
++
++	dbg_jnl("jhead %d, LEB %d:%d, len %d", jhead, *lnum, *offs, len);
++	ubifs_prepare_node(c, node, len, 0);
++
++	return ubifs_wbuf_write_nolock(wbuf, node, len);
++}
++
++/**
++ * write_head - write data to a journal head.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head
++ * @buf: buffer to write
++ * @len: length to write
++ * @lnum: LEB number written is returned here
++ * @offs: offset written is returned here
++ * @sync: non-zero if the write-buffer has to by synchronized
++ *
++ * This function is the same as 'write_node()' but it does not assume the
++ * buffer it is writing is a node, so it does not prepare it (which means
++ * initializing common header and calculating CRC).
++ */
++static int write_head(struct ubifs_info *c, int jhead, void *buf, int len,
++		      int *lnum, int *offs, int sync)
++{
++	int err;
++	struct ubifs_wbuf *wbuf = &c->jheads[jhead].wbuf;
++
++	ubifs_assert(jhead != GCHD);
++
++	*lnum = c->jheads[jhead].wbuf.lnum;
++	*offs = c->jheads[jhead].wbuf.offs + c->jheads[jhead].wbuf.used;
++	dbg_jnl("jhead %d, LEB %d:%d, len %d", jhead, *lnum, *offs, len);
++
++	err = ubifs_wbuf_write_nolock(wbuf, buf, len);
++	if (err)
++		return err;
++	if (sync)
++		err = ubifs_wbuf_sync_nolock(wbuf);
++	return err;
++}
++
++/**
++ * make_reservation - reserve journal space.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head
++ * @len: how many bytes to reserve
++ *
++ * This function makes space reservation in journal head @jhead. The function
++ * takes the commit lock and locks the journal head, and the caller has to
++ * unlock the head and finish the reservation with 'finish_reservation()'.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ *
++ * Note, the journal head may be unlocked as soon as the data is written, while
++ * the commit lock has to be released after the data has been added to the
++ * TNC.
++ */
++static int make_reservation(struct ubifs_info *c, int jhead, int len)
++{
++	int err, cmt_retries = 0, nospc_retries = 0;
++
++	ubifs_assert(len <= c->dark_wm);
++
++again:
++	down_read(&c->commit_sem);
++	err = reserve_space(c, jhead, len);
++	if (!err)
++		return 0;
++	up_read(&c->commit_sem);
++
++	if (err == -ENOSPC) {
++		/*
++		 * GC could not make any progress. We should try to commit
++		 * once because it could make some dirty space and GC would
++		 * make progress, so make the error -EAGAIN so that the below
++		 * will commit and re-try.
++		 */
++		if (nospc_retries++ < 2) {
++			dbg_jnl("no space, retry");
++			err = -EAGAIN;
++		}
++
++		/*
++		 * This means that the budgeting is incorrect. We always have
++		 * to be able to write to the media, because all operations are
++		 * budgeted. Deletions are not budgeted, though, but we reserve
++		 * an extra LEB for them.
++		 */
++	}
++
++	if (err != -EAGAIN)
++		goto out;
++
++	/*
++	 * -EAGAIN means that the journal is full or too large, or the above
++	 * code wants to do one commit. Do this and re-try.
++	 */
++	if (cmt_retries > 128) {
++		/*
++		 * This should not happen unless the journal size limitations
++		 * are too tough.
++		 */
++		ubifs_err("stuck in space allocation");
++		err = -ENOSPC;
++		goto out;
++	} else if (cmt_retries > 32)
++		ubifs_warn("too many space allocation re-tries (%d)",
++			   cmt_retries);
++
++	dbg_jnl("-EAGAIN, commit and retry (retried %d times)",
++		cmt_retries);
++	cmt_retries += 1;
++
++	err = ubifs_run_commit(c);
++	if (err)
++		return err;
++	goto again;
++
++out:
++	ubifs_err("cannot reserve %d bytes in jhead %d, error %d",
++		  len, jhead, err);
++	if (err == -ENOSPC) {
++		/* This are some budgeting problems, print useful information */
++		down_write(&c->commit_sem);
++		spin_lock(&c->space_lock);
++		dbg_dump_stack();
++		dbg_dump_budg(c);
++		spin_unlock(&c->space_lock);
++		dbg_dump_lprops(c);
++		cmt_retries = dbg_check_lprops(c);
++		up_write(&c->commit_sem);
++	}
++
++	return err;
++}
++
++/**
++ * release_head - release a journal head.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head
++ *
++ * This function releases journal head @jhead which was locked by
++ * the 'make_reservation()' function. It has to be called after each successful
++ * 'make_reservation()' invocation.
++ */
++static inline void release_head(struct ubifs_info *c, int jhead)
++{
++	mutex_unlock(&c->jheads[jhead].wbuf.io_mutex);
++}
++
++/**
++ * finish_reservation - finish a reservation.
++ * @c: UBIFS file-system description object
++ *
++ * This function finishes journal space reservation. It must be called after
++ * 'make_reservation()'.
++ */
++static void finish_reservation(struct ubifs_info *c)
++{
++	up_read(&c->commit_sem);
++}
++
++/**
++ * get_dent_type - translate VFS inode mode to UBIFS directory entry type.
++ * @mode: inode mode
++ */
++static int get_dent_type(int mode)
++{
++	switch (mode & S_IFMT) {
++	case S_IFREG:
++		return UBIFS_ITYPE_REG;
++	case S_IFDIR:
++		return UBIFS_ITYPE_DIR;
++	case S_IFLNK:
++		return UBIFS_ITYPE_LNK;
++	case S_IFBLK:
++		return UBIFS_ITYPE_BLK;
++	case S_IFCHR:
++		return UBIFS_ITYPE_CHR;
++	case S_IFIFO:
++		return UBIFS_ITYPE_FIFO;
++	case S_IFSOCK:
++		return UBIFS_ITYPE_SOCK;
++	default:
++		BUG();
++	}
++	return 0;
++}
++
++/**
++ * pack_inode - pack an inode node.
++ * @c: UBIFS file-system description object
++ * @ino: buffer in which to pack inode node
++ * @inode: inode to pack
++ * @last: indicates the last node of the group
++ * @last_reference: non-zero if this is a deletion inode
++ */
++static void pack_inode(struct ubifs_info *c, struct ubifs_ino_node *ino,
++		       const struct inode *inode, int last, int last_reference)
++{
++	int data_len = 0;
++	struct ubifs_inode *ui = ubifs_inode(inode);
++
++	ino->ch.node_type = UBIFS_INO_NODE;
++	ino_key_init_flash(c, &ino->key, inode->i_ino);
++	ino->creat_sqnum = cpu_to_le64(ui->creat_sqnum);
++	ino->size  = cpu_to_le64(i_size_read(inode));
++	ino->nlink = cpu_to_le32(inode->i_nlink);
++	ino->atime_sec  = cpu_to_le64(inode->i_atime.tv_sec);
++	ino->atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
++	ino->ctime_sec  = cpu_to_le64(inode->i_ctime.tv_sec);
++	ino->ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
++	ino->mtime_sec  = cpu_to_le64(inode->i_mtime.tv_sec);
++	ino->mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
++	ino->uid   = cpu_to_le32(inode->i_uid);
++	ino->gid   = cpu_to_le32(inode->i_gid);
++	ino->mode  = cpu_to_le32(inode->i_mode);
++	ino->flags = cpu_to_le32(ui->flags);
++	ino->compr_type  = cpu_to_le16(ui->compr_type);
++	ino->xattr_cnt   = cpu_to_le32(ui->xattr_cnt);
++	ino->xattr_size  = cpu_to_le64(ui->xattr_size);
++	ino->xattr_names = cpu_to_le32(ui->xattr_names);
++	ino->data_len    = cpu_to_le32(ui->data_len);
++	zero_ino_node_unused(ino);
++
++	/*
++	 * Drop the attached data if this is a deletion inode, the data is not
++	 * needed anymore.
++	 */
++	if (!last_reference) {
++		memcpy(ino->data, ui->data, ui->data_len);
++		data_len = ui->data_len;
++	}
++
++	ubifs_prep_grp_node(c, ino, UBIFS_INO_NODE_SZ + data_len, last);
++}
++
++/**
++ * ubifs_jnl_update - update inode.
++ * @c: UBIFS file-system description object
++ * @dir: parent inode or host inode in case of extended attributes
++ * @nm: directory entry name
++ * @inode: inode
++ * @deletion: indicates a directory entry deletion i.e unlink or rmdir
++ * @sync: non-zero if the write-buffer has to be synchronized
++ * @xent: non-zero if the directory entry is an extended attribute entry
++ *
++ * This function updates an inode by writing a directory entry (or extended
++ * attribute entry), the inode itself, and the parent directory inode (or the
++ * host inode) to the journal.
++ *
++ * The function writes the host inode @dir last, which is important in case of
++ * extended attributes. Indeed, then we guarantee that if the host inode gets
++ * synchronized, and the write-buffer it sits in gets flushed, the extended
++ * attribute inode gets flushed too. And this is exactly what the user expects -
++ * synchronizing the host inode synchronizes its extended attributes.
++ * Similarly, this guarantees that if @dir is synchronized, its directory entry
++ * corresponding to @nm gets synchronized too.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
++		     const struct qstr *nm, const struct inode *inode,
++		     int deletion, int sync, int xent)
++{
++	int err, dlen, ilen, len, lnum, ino_offs, dent_offs;
++	int aligned_dlen, aligned_ilen;
++	int last_reference = !!(deletion && inode->i_nlink == 0);
++	struct ubifs_dent_node *dent;
++	struct ubifs_ino_node *ino;
++	union ubifs_key dent_key, ino_key;
++
++	dbg_jnl("ino %lu, dent '%.*s', data len %d in dir ino %lu",
++		inode->i_ino, nm->len, nm->name, ubifs_inode(inode)->data_len,
++		dir->i_ino);
++	ubifs_assert(ubifs_inode(dir)->data_len == 0);
++
++	dlen = UBIFS_DENT_NODE_SZ + nm->len + 1;
++	ilen = UBIFS_INO_NODE_SZ;
++
++	/*
++	 * If the last reference to the inode is being deleted, then there is no
++	 * need to attach and write inode data, it is being deleted anyway.
++	 */
++	if (!last_reference)
++		ilen += ubifs_inode(inode)->data_len;
++
++	aligned_dlen = ALIGN(dlen, 8);
++	aligned_ilen = ALIGN(ilen, 8);
++
++	len = aligned_dlen + aligned_ilen + UBIFS_INO_NODE_SZ;
++
++	dent = kmalloc(len, GFP_NOFS);
++	if (!dent)
++		return -ENOMEM;
++
++	/* Make reservation before allocating sequence numbers */
++	err = make_reservation(c, BASEHD, len);
++	if (err)
++		goto out_free;
++
++	if (!xent) {
++		dent->ch.node_type = UBIFS_DENT_NODE;
++		dent_key_init(c, &dent_key, dir->i_ino, nm);
++	} else {
++		dent->ch.node_type = UBIFS_XENT_NODE;
++		xent_key_init(c, &dent_key, dir->i_ino, nm);
++	}
++
++	key_write(c, &dent_key, dent->key);
++	dent->inum = deletion ? 0 : cpu_to_le64(inode->i_ino);
++	dent->type = get_dent_type(inode->i_mode);
++	dent->nlen = cpu_to_le16(nm->len);
++	memcpy(dent->name, nm->name, nm->len);
++	dent->name[nm->len] = '\0';
++	zero_dent_node_unused(dent);
++	ubifs_prep_grp_node(c, dent, dlen, 0);
++
++	ino = (void *)dent + aligned_dlen;
++	pack_inode(c, ino, inode, 0, last_reference);
++
++	ino = (void *)ino + aligned_ilen;
++	pack_inode(c, ino, dir, 1, 0);
++
++	if (last_reference) {
++		err = ubifs_add_orphan(c, inode->i_ino);
++		if (err) {
++			release_head(c, BASEHD);
++			goto out_finish;
++		}
++	}
++
++	err = write_head(c, BASEHD, dent, len, &lnum, &dent_offs, sync);
++	if (!sync && !err) {
++		struct ubifs_wbuf *wbuf = &c->jheads[BASEHD].wbuf;
++
++		ubifs_wbuf_add_ino_nolock(wbuf, inode->i_ino);
++		ubifs_wbuf_add_ino_nolock(wbuf, dir->i_ino);
++	}
++	release_head(c, BASEHD);
++	kfree(dent);
++	if (err)
++		goto out_ro;
++
++	if (deletion) {
++		err = ubifs_tnc_remove_nm(c, &dent_key, nm);
++		if (err)
++			goto out_ro;
++		err = ubifs_add_dirt(c, lnum, dlen);
++	} else
++		err = ubifs_tnc_add_nm(c, &dent_key, lnum, dent_offs, dlen, nm);
++	if (err)
++		goto out_ro;
++
++	/*
++	 * Note, we do not remove the inode from TNC even if the last reference
++	 * to it has just been deleted, because the inode may still be opened.
++	 * Instead, the inode has been added to orphan lists and the orphan
++	 * subsystem will take further care about it.
++	 */
++	ino_key_init(c, &ino_key, inode->i_ino);
++	ino_offs = dent_offs + aligned_dlen;
++	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, ilen);
++	if (err)
++		goto out_ro;
++
++	ino_key_init(c, &ino_key, dir->i_ino);
++	ino_offs += aligned_ilen;
++	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, UBIFS_INO_NODE_SZ);
++	if (err)
++		goto out_ro;
++
++	finish_reservation(c);
++	return 0;
++
++out_finish:
++	finish_reservation(c);
++out_free:
++	kfree(dent);
++	return err;
++
++out_ro:
++	ubifs_ro_mode(c, err);
++	if (last_reference)
++		ubifs_delete_orphan(c, inode->i_ino);
++	finish_reservation(c);
++	return err;
++}
++
++/**
++ * ubifs_jnl_write_data - write a data node to the journal.
++ * @c: UBIFS file-system description object
++ * @inode: inode the data node belongs to
++ * @key: node key
++ * @buf: buffer to write
++ * @len: data length (must not exceed %UBIFS_BLOCK_SIZE)
++ *
++ * This function writes a data node to the journal. Returns %0 if the data node
++ * was successfully written, and a negative error code in case of failure.
++ */
++int ubifs_jnl_write_data(struct ubifs_info *c, const struct inode *inode,
++			 const union ubifs_key *key, const void *buf, int len)
++{
++	int err, lnum, offs, compr_type, out_len;
++	int dlen = UBIFS_DATA_NODE_SZ + UBIFS_BLOCK_SIZE * WORST_COMPR_FACTOR;
++	const struct ubifs_inode *ui = ubifs_inode(inode);
++	struct ubifs_data_node *data;
++
++	dbg_jnl("ino %lu, blk %u, len %d, key %s", key_inum(c, key),
++		key_block(c, key), len, DBGKEY(key));
++	ubifs_assert(len <= UBIFS_BLOCK_SIZE);
++
++	data = kmalloc(dlen, GFP_NOFS);
++	if (!data)
++		return -ENOMEM;
++
++	data->ch.node_type = UBIFS_DATA_NODE;
++	key_write(c, key, &data->key);
++	data->size = cpu_to_le32(len);
++	zero_data_node_unused(data);
++
++	if (!(ui->flags && UBIFS_COMPR_FL))
++		/* Compression is disabled for this inode */
++		compr_type = UBIFS_COMPR_NONE;
++	else
++		compr_type = ui->compr_type;
++
++	out_len = dlen - UBIFS_DATA_NODE_SZ;
++	ubifs_compress(buf, len, &data->data, &out_len, &compr_type);
++	ubifs_assert(out_len <= UBIFS_BLOCK_SIZE);
++
++	dlen = UBIFS_DATA_NODE_SZ + out_len;
++	data->compr_type = cpu_to_le16(compr_type);
++
++	/* Make reservation before allocating sequence numbers */
++	err = make_reservation(c, DATAHD, dlen);
++	if (err)
++		goto out_free;
++
++	err = write_node(c, DATAHD, data, dlen, &lnum, &offs);
++	if (!err)
++		ubifs_wbuf_add_ino_nolock(&c->jheads[DATAHD].wbuf,
++					  key_inum(c, key));
++	release_head(c, DATAHD);
++	if (err)
++		goto out_ro;
++
++	err = ubifs_tnc_add(c, key, lnum, offs, dlen);
++	if (err)
++		goto out_ro;
++
++	finish_reservation(c);
++	kfree(data);
++	return 0;
++
++out_ro:
++	ubifs_ro_mode(c, err);
++	finish_reservation(c);
++out_free:
++	kfree(data);
++	return err;
++}
++
++/**
++ * ubifs_jnl_write_inode - flush inode to the journal.
++ * @c: UBIFS file-system description object
++ * @inode: inode to flush
++ * @last_reference: inode has been deleted
++ * @sync: non-zero if the write-buffer has to be synchronized
++ *
++ * This function writes inode @inode to the journal (to the base head). Returns
++ * zero in case of success and a negative error code in case of failure.
++ */
++int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode,
++			  int last_reference, int sync)
++{
++	int err, len, lnum, offs;
++	struct ubifs_ino_node *ino;
++	struct ubifs_inode *ui = ubifs_inode(inode);
++
++	dbg_jnl("ino %lu%s", inode->i_ino,
++		last_reference ? " (last reference)" : "");
++	if (last_reference)
++		ubifs_assert(inode->i_nlink == 0);
++
++	/* If the inode is deleted, do not write the attached data */
++	len = UBIFS_INO_NODE_SZ;
++	if (!last_reference)
++		len += ui->data_len;
++	ino = kmalloc(len, GFP_NOFS);
++	if (!ino)
++		return -ENOMEM;
++
++	/* Make reservation before allocating sequence numbers */
++	err = make_reservation(c, BASEHD, len);
++	if (err)
++		goto out_free;
++
++	pack_inode(c, ino, inode, 1, last_reference);
++
++	err = write_head(c, BASEHD, ino, len, &lnum, &offs, sync);
++	if (!sync && !err)
++		ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf,
++					  inode->i_ino);
++	release_head(c, BASEHD);
++	if (err)
++		goto out_ro;
++
++	if (last_reference) {
++		err = ubifs_tnc_remove_ino(c, inode->i_ino);
++		if (err)
++			goto out_ro;
++		ubifs_delete_orphan(c, inode->i_ino);
++		err = ubifs_add_dirt(c, lnum, len);
++	} else {
++		union ubifs_key key;
++
++		ino_key_init(c, &key, inode->i_ino);
++		err = ubifs_tnc_add(c, &key, lnum, offs, len);
++	}
++	if (err)
++		goto out_ro;
++
++	finish_reservation(c);
++	kfree(ino);
++	return 0;
++
++out_ro:
++	ubifs_ro_mode(c, err);
++	finish_reservation(c);
++out_free:
++	kfree(ino);
++	return err;
++}
++
++/**
++ * ubifs_jnl_rename - rename a directory entry.
++ * @c: UBIFS file-system description object
++ * @old_dir: parent inode of directory entry to rename
++ * @old_dentry: directory entry to rename
++ * @new_dir: parent inode of directory entry to rename
++ * @new_dentry: new directory entry (or directory entry to replace)
++ * @sync: non-zero if the write-buffer has to be synchronized
++ *
++ * Returns zero in case of success and a negative error code in case of failure.
++ */
++int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
++		     const struct dentry *old_dentry,
++		     const struct inode *new_dir,
++		     const struct dentry *new_dentry, int sync)
++{
++	const struct inode *old_inode = old_dentry->d_inode;
++	const struct inode *new_inode = new_dentry->d_inode;
++	int err, dlen1, dlen2, ilen, lnum, offs, len;
++	int aligned_dlen1, aligned_dlen2, plen = UBIFS_INO_NODE_SZ;
++	int last_reference = !!(new_inode && new_inode->i_nlink == 0);
++	struct ubifs_dent_node *dent, *dent2;
++	void *p;
++	union ubifs_key key;
++
++	dbg_jnl("dent '%.*s' in dir ino %lu to dent '%.*s' in dir ino %lu",
++		old_dentry->d_name.len, old_dentry->d_name.name,
++		old_dir->i_ino, new_dentry->d_name.len,
++		new_dentry->d_name.name, new_dir->i_ino);
++
++	ubifs_assert(ubifs_inode(old_dir)->data_len == 0);
++	ubifs_assert(ubifs_inode(new_dir)->data_len == 0);
++
++	dlen1 = UBIFS_DENT_NODE_SZ + new_dentry->d_name.len + 1;
++	dlen2 = UBIFS_DENT_NODE_SZ + old_dentry->d_name.len + 1;
++	if (new_inode) {
++		ilen = UBIFS_INO_NODE_SZ;
++		if (!last_reference)
++			ilen += ubifs_inode(new_inode)->data_len;
++	} else
++		ilen = 0;
++
++	aligned_dlen1 = ALIGN(dlen1, 8);
++	aligned_dlen2 = ALIGN(dlen2, 8);
++
++	len = aligned_dlen1 + aligned_dlen2 + ALIGN(ilen, 8) + ALIGN(plen, 8);
++	if (old_dir != new_dir)
++		len += plen;
++
++	dent = kmalloc(len, GFP_NOFS);
++	if (!dent)
++		return -ENOMEM;
++
++	/* Make reservation before allocating sequence numbers */
++	err = make_reservation(c, BASEHD, len);
++	if (err)
++		goto out_free;
++
++	/* Make new dent */
++	dent->ch.node_type = UBIFS_DENT_NODE;
++	dent_key_init_flash(c, &dent->key, new_dir->i_ino, &new_dentry->d_name);
++	dent->inum = cpu_to_le64(old_inode->i_ino);
++	dent->type = get_dent_type(old_inode->i_mode);
++	dent->nlen = cpu_to_le16(new_dentry->d_name.len);
++	memcpy(dent->name, new_dentry->d_name.name, new_dentry->d_name.len);
++	dent->name[new_dentry->d_name.len] = '\0';
++	zero_dent_node_unused(dent);
++	ubifs_prep_grp_node(c, dent, dlen1, 0);
++
++	dent2 = (void *)dent + aligned_dlen1;
++
++	/* Make deletion dent */
++	dent2->ch.node_type = UBIFS_DENT_NODE;
++	dent_key_init_flash(c, &dent2->key, old_dir->i_ino,
++			    &old_dentry->d_name);
++	dent2->inum = 0;
++	dent2->type = DT_UNKNOWN;
++	dent2->nlen = cpu_to_le16(old_dentry->d_name.len);
++	memcpy(dent2->name, old_dentry->d_name.name, old_dentry->d_name.len);
++	dent2->name[old_dentry->d_name.len] = '\0';
++	zero_dent_node_unused(dent2);
++	ubifs_prep_grp_node(c, dent2, dlen2, 0);
++
++	p = (void *)dent2 + aligned_dlen2;
++	if (new_inode) {
++		pack_inode(c, p, new_inode, 0, last_reference);
++		p += ALIGN(ilen, 8);
++	}
++
++	if (old_dir == new_dir)
++		pack_inode(c, p, old_dir, 1, 0);
++	else {
++		pack_inode(c, p, old_dir, 0, 0);
++		p += ALIGN(plen, 8);
++		pack_inode(c, p, new_dir, 1, 0);
++	}
++
++	if (last_reference) {
++		err = ubifs_add_orphan(c, new_inode->i_ino);
++		if (err) {
++			release_head(c, BASEHD);
++			goto out_finish;
++		}
++	}
++
++	err = write_head(c, BASEHD, dent, len, &lnum, &offs, sync);
++	if (!sync && !err) {
++		struct ubifs_wbuf *wbuf = &c->jheads[BASEHD].wbuf;
++
++		ubifs_wbuf_add_ino_nolock(wbuf, new_dir->i_ino);
++		ubifs_wbuf_add_ino_nolock(wbuf, old_dir->i_ino);
++		if (new_inode)
++			ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf,
++						  new_inode->i_ino);
++	}
++	release_head(c, BASEHD);
++	if (err)
++		goto out_ro;
++
++	dent_key_init(c, &key, new_dir->i_ino, &new_dentry->d_name);
++	err = ubifs_tnc_add_nm(c, &key, lnum, offs, dlen1, &new_dentry->d_name);
++	if (err)
++		goto out_ro;
++
++	err = ubifs_add_dirt(c, lnum, dlen2);
++	if (err)
++		goto out_ro;
++
++	dent_key_init(c, &key, old_dir->i_ino, &old_dentry->d_name);
++	err = ubifs_tnc_remove_nm(c, &key, &old_dentry->d_name);
++	if (err)
++		goto out_ro;
++
++	offs += aligned_dlen1 + aligned_dlen2;
++	if (new_inode) {
++		ino_key_init(c, &key, new_inode->i_ino);
++		err = ubifs_tnc_add(c, &key, lnum, offs, ilen);
++		if (err)
++			goto out_ro;
++		offs += ALIGN(ilen, 8);
++	}
++
++	ino_key_init(c, &key, old_dir->i_ino);
++	err = ubifs_tnc_add(c, &key, lnum, offs, plen);
++	if (err)
++		goto out_ro;
++
++	if (old_dir != new_dir) {
++		offs += ALIGN(plen, 8);
++		ino_key_init(c, &key, new_dir->i_ino);
++		err = ubifs_tnc_add(c, &key, lnum, offs, plen);
++		if (err)
++			goto out_ro;
++	}
++
++	finish_reservation(c);
++	kfree(dent);
++	return 0;
++
++out_ro:
++	ubifs_ro_mode(c, err);
++	if (last_reference)
++		ubifs_delete_orphan(c, new_inode->i_ino);
++out_finish:
++	finish_reservation(c);
++out_free:
++	kfree(dent);
++	return err;
++}
++
++/**
++ * recomp_data_node - re-compress a truncated data node.
++ * @dn: data node to re-compress
++ * @new_len: new length
++ *
++ * This function is used when an inode is truncated and the last data node of
++ * the inode has to be re-compressed and re-written.
++ */
++static int recomp_data_node(struct ubifs_data_node *dn, int *new_len)
++{
++	void *buf;
++	int err, len, compr_type, out_len;
++
++	out_len = le32_to_cpu(dn->size);
++	buf = kmalloc(out_len * WORST_COMPR_FACTOR, GFP_NOFS);
++	if (!buf)
++		return -ENOMEM;
++
++	len = le32_to_cpu(dn->ch.len) - UBIFS_DATA_NODE_SZ;
++	compr_type = le16_to_cpu(dn->compr_type);
++	err = ubifs_decompress(&dn->data, len, buf, &out_len, compr_type);
++	if (err)
++		goto out;
++
++	ubifs_compress(buf, *new_len, &dn->data, &out_len, &compr_type);
++	ubifs_assert(out_len <= UBIFS_BLOCK_SIZE);
++	dn->compr_type = cpu_to_le16(compr_type);
++	dn->size = cpu_to_le32(*new_len);
++	*new_len = UBIFS_DATA_NODE_SZ + out_len;
++out:
++	kfree(buf);
++	return err;
++}
++
++/**
++ * ubifs_jnl_truncate - update the journal for a truncation.
++ * @c: UBIFS file-system description object
++ * @inum: inode number of inode being truncated
++ * @old_size: old size
++ * @new_size: new size
++ *
++ * When the size of a file decreases due to truncation, a truncation node is
++ * written, the journal tree is updated, and the last data block is re-written
++ * if it has been affected.
++ *
++ * This function returns %0 in the case of success, and a negative error code in
++ * case of failure.
++ */
++int ubifs_jnl_truncate(struct ubifs_info *c, ino_t inum,
++		       loff_t old_size, loff_t new_size)
++{
++	union ubifs_key key, to_key;
++	struct ubifs_trun_node *trun;
++	struct ubifs_data_node *uninitialized_var(dn);
++	int err, dlen, len, lnum, offs, bit, sz;
++	unsigned int blk;
++
++	dbg_jnl("ino %lu, size %lld -> %lld", inum, old_size, new_size);
++
++	sz = UBIFS_TRUN_NODE_SZ + UBIFS_MAX_DATA_NODE_SZ * WORST_COMPR_FACTOR;
++	trun = kmalloc(sz, GFP_NOFS);
++	if (!trun)
++		return -ENOMEM;
++
++	trun->ch.node_type = UBIFS_TRUN_NODE;
++	trun->inum = cpu_to_le32(inum);
++	trun->old_size = cpu_to_le64(old_size);
++	trun->new_size = cpu_to_le64(new_size);
++	zero_trun_node_unused(trun);
++
++	dlen = new_size & (UBIFS_BLOCK_SIZE - 1);
++
++	if (dlen) {
++		/* Get last data block so it can be truncated */
++		dn = (void *)trun + ALIGN(UBIFS_TRUN_NODE_SZ, 8);
++		blk = new_size / UBIFS_BLOCK_SIZE;
++		data_key_init(c, &key, inum, blk);
++		dbg_jnl("last block key %s", DBGKEY(&key));
++		err = ubifs_tnc_lookup(c, &key, dn);
++		if (err == -ENOENT)
++			dlen = 0; /* Not found (so it is a hole) */
++		else if (err)
++			goto out_free;
++		else {
++			if (le32_to_cpu(dn->size) <= dlen)
++				dlen = 0; /* Nothing to do */
++			else {
++				int compr_type = le16_to_cpu(dn->compr_type);
++
++				if (compr_type != UBIFS_COMPR_NONE) {
++					err = recomp_data_node(dn, &dlen);
++					if (err)
++						goto out_free;
++				} else {
++					dn->size = cpu_to_le32(dlen);
++					dlen += UBIFS_DATA_NODE_SZ;
++				}
++				zero_data_node_unused(dn);
++			}
++		}
++	}
++
++	if (dlen)
++		len = ALIGN(UBIFS_TRUN_NODE_SZ, 8) + dlen;
++	else
++		len = UBIFS_TRUN_NODE_SZ;
++
++	/* Must make reservation before allocating sequence numbers */
++	err = make_reservation(c, BASEHD, len);
++	if (err)
++		goto out_free;
++
++	ubifs_prepare_node(c, trun, UBIFS_TRUN_NODE_SZ, 0);
++	if (dlen)
++		ubifs_prepare_node(c, dn, dlen, 0);
++
++	err = write_head(c, BASEHD, trun, len, &lnum, &offs, 0);
++	if (!err)
++		ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf, inum);
++	release_head(c, BASEHD);
++	if (err)
++		goto out_ro;
++
++	if (dlen) {
++		offs += ALIGN(UBIFS_TRUN_NODE_SZ, 8);
++		err = ubifs_tnc_add(c, &key, lnum, offs, dlen);
++		if (err)
++			goto out_ro;
++	}
++
++	err = ubifs_add_dirt(c, lnum, UBIFS_TRUN_NODE_SZ);
++	if (err)
++		goto out_ro;
++
++	bit = new_size & (UBIFS_BLOCK_SIZE - 1);
++
++	blk = new_size / UBIFS_BLOCK_SIZE + (bit ? 1 : 0);
++	data_key_init(c, &key, inum, blk);
++
++	bit = old_size & (UBIFS_BLOCK_SIZE - 1);
++
++	blk = old_size / UBIFS_BLOCK_SIZE - (bit ? 0: 1);
++	data_key_init(c, &to_key, inum, blk);
++
++	err = ubifs_tnc_remove_range(c, &key, &to_key);
++	if (err)
++		goto out_ro;
++
++	finish_reservation(c);
++	kfree(trun);
++	return 0;
++
++out_ro:
++	ubifs_ro_mode(c, err);
++	finish_reservation(c);
++out_free:
++	kfree(trun);
++	return err;
++}
++
++#ifdef CONFIG_UBIFS_FS_XATTR
++
++int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
++			   const struct inode *inode, const struct qstr *nm,
++			   int sync)
++{
++	int err, xlen, hlen, len, lnum, xent_offs, aligned_xlen;
++	struct ubifs_dent_node *xent;
++	struct ubifs_ino_node *ino;
++	union ubifs_key xent_key, key1, key2;
++
++	dbg_jnl("host %lu, xattr ino %lu, name '%s', data len %d",
++		host->i_ino, inode->i_ino, nm->name,
++		ubifs_inode(inode)->data_len);
++	ubifs_assert(inode->i_nlink == 0);
++
++	/*
++	 * Since we are deleting the inode, we do not bother to attach any data
++	 * to it and assume its length is %UBIFS_INO_NODE_SZ.
++	 */
++	xlen = UBIFS_DENT_NODE_SZ + nm->len + 1;
++	aligned_xlen = ALIGN(xlen, 8);
++	hlen = ubifs_inode(host)->data_len + UBIFS_INO_NODE_SZ;
++	len = aligned_xlen + UBIFS_INO_NODE_SZ + ALIGN(hlen, 8);
++
++	xent = kmalloc(len, GFP_NOFS);
++	if (!xent)
++		return -ENOMEM;
++
++	/* Make reservation before allocating sequence numbers */
++	err = make_reservation(c, BASEHD, len);
++	if (err) {
++		kfree(xent);
++		return err;
++	}
++
++	xent->ch.node_type = UBIFS_XENT_NODE;
++	xent_key_init(c, &xent_key, host->i_ino, nm);
++	key_write(c, &xent_key, xent->key);
++	xent->inum = 0;
++	xent->type = get_dent_type(inode->i_mode);
++	xent->nlen = cpu_to_le16(nm->len);
++	memcpy(xent->name, nm->name, nm->len);
++	xent->name[nm->len] = '\0';
++	zero_dent_node_unused(xent);
++	ubifs_prep_grp_node(c, xent, xlen, 0);
++
++	ino = (void *)xent + aligned_xlen;
++	pack_inode(c, ino, inode, 0, 1);
++
++	ino = (void *)ino + UBIFS_INO_NODE_SZ;
++	pack_inode(c, ino, host, 1, 0);
++
++	err = write_head(c, BASEHD, xent, len, &lnum, &xent_offs, sync);
++	if (!sync && !err)
++		ubifs_wbuf_add_ino_nolock(&c->jheads[BASEHD].wbuf, host->i_ino);
++	release_head(c, BASEHD);
++	kfree(xent);
++	if (err)
++		goto out_ro;
++
++	/* Remove the extended attribute entry from TNC */
++	err = ubifs_tnc_remove_nm(c, &xent_key, nm);
++	if (err)
++		goto out_ro;
++	err = ubifs_add_dirt(c, lnum, xlen);
++	if (err)
++		goto out_ro;
++
++	/*
++	 * Remove all nodes belonging to the extended attribute inode from TNC.
++	 * Well, there actually must be only one node - the inode itself.
++	 */
++	lowest_ino_key(c, &key1, inode->i_ino);
++	highest_ino_key(c, &key2, inode->i_ino);
++	err = ubifs_tnc_remove_range(c, &key1, &key2);
++	if (err)
++		goto out_ro;
++	err = ubifs_add_dirt(c, lnum, UBIFS_INO_NODE_SZ);
++	if (err)
++		goto out_ro;
++
++	/* And update TNC with the new host inode position */
++	ino_key_init(c, &key1, host->i_ino);
++	err = ubifs_tnc_add(c, &key1, lnum, xent_offs + len - hlen, hlen);
++	if (err)
++		goto out_ro;
++
++	finish_reservation(c);
++	return 0;
++
++out_ro:
++	ubifs_ro_mode(c, err);
++	finish_reservation(c);
++	return err;
++}
++
++/**
++ * ubifs_jnl_write_2_inodes - write 2 inodes to the journal.
++ * @c: UBIFS file-system description object
++ * @inode1: first inode to write
++ * @inode2: second inode to write
++ * @sync: non-zero if the write-buffer has to be synchronized
++ *
++ * This function writes 2 inodes @inode1 and @inode2 to the journal (to the
++ * base head - first @inode1, then @inode2). Returns zero in case of success
++ * and a negative error code in case of failure.
++ */
++int ubifs_jnl_write_2_inodes(struct ubifs_info *c, const struct inode *inode1,
++			     const struct inode *inode2, int sync)
++{
++	int err, len1, len2, aligned_len, aligned_len1, lnum, offs;
++	struct ubifs_ino_node *ino;
++	union ubifs_key key;
++
++	dbg_jnl("ino %lu, ino %lu", inode1->i_ino, inode2->i_ino);
++	ubifs_assert(inode1->i_nlink > 0);
++	ubifs_assert(inode2->i_nlink > 0);
++
++	len1 = UBIFS_INO_NODE_SZ + ubifs_inode(inode1)->data_len;
++	len2 = UBIFS_INO_NODE_SZ + ubifs_inode(inode2)->data_len;
++	aligned_len1 = ALIGN(len1, 8);
++	aligned_len = aligned_len1 + ALIGN(len2, 8);
++
++	ino = kmalloc(aligned_len, GFP_NOFS);
++	if (!ino)
++		return -ENOMEM;
++
++	/* Make reservation before allocating sequence numbers */
++	err = make_reservation(c, BASEHD, aligned_len);
++	if (err)
++		goto out_free;
++
++	pack_inode(c, ino, inode1, 0, 0);
++	pack_inode(c, (void *)ino + aligned_len1, inode2, 1, 0);
++
++	err = write_head(c, BASEHD, ino, aligned_len, &lnum, &offs, 0);
++	if (!sync && !err) {
++		struct ubifs_wbuf *wbuf = &c->jheads[BASEHD].wbuf;
++
++		ubifs_wbuf_add_ino_nolock(wbuf, inode1->i_ino);
++		ubifs_wbuf_add_ino_nolock(wbuf, inode2->i_ino);
++	}
++	release_head(c, BASEHD);
++	if (err)
++		goto out_ro;
++
++	ino_key_init(c, &key, inode1->i_ino);
++	err = ubifs_tnc_add(c, &key, lnum, offs, len1);
++	if (err)
++		goto out_ro;
++
++	ino_key_init(c, &key, inode2->i_ino);
++	err = ubifs_tnc_add(c, &key, lnum, offs + aligned_len1, len2);
++	if (err)
++		goto out_ro;
++
++	finish_reservation(c);
++	kfree(ino);
++	return 0;
++
++out_ro:
++	ubifs_ro_mode(c, err);
++	finish_reservation(c);
++out_free:
++	kfree(ino);
++	return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_XATTR */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/Kconfig avr32-2.6/fs/ubifs/Kconfig
+--- linux-2.6.25.6/fs/ubifs/Kconfig	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/Kconfig	2008-06-12 15:09:45.311815896 +0200
+@@ -0,0 +1,72 @@
++config UBIFS_FS
++	tristate "UBIFS file system support"
++	select CRC16
++	select CRC32
++	select CRYPTO if UBIFS_FS_ADVANCED_COMPR
++	select CRYPTO if UBIFS_FS_LZO
++	select CRYPTO if UBIFS_FS_ZLIB
++	select CRYPTO_LZO if UBIFS_FS_LZO
++	select CRYPTO_DEFLATE if UBIFS_FS_ZLIB
++	depends on MTD_UBI
 +	help
-+	  This provides a backlight control internal to the Atmel LCDC
-+	  driver.  If the LCD "contrast control" on your board is wired
-+	  so it controls the backlight brightness, select this option to
-+	  export this as a PWM-based backlight control.
-+
-+	  If in doubt, it's safe to enable this option; it doesn't kick
-+	  in unless the board's description says it's wired that way.
-+
- config BACKLIGHT_CORGI
- 	tristate "Generic (aka Sharp Corgi) Backlight Driver"
- 	depends on BACKLIGHT_CLASS_DEVICE
---- a/drivers/video/console/Kconfig
-+++ b/drivers/video/console/Kconfig
-@@ -6,7 +6,7 @@
- 
- config VGA_CONSOLE
- 	bool "VGA text console" if EMBEDDED || !X86
--	depends on !ARCH_ACORN && !ARCH_EBSA110 && !4xx && !8xx && !SPARC && !M68K && !PARISC && !FRV && !ARCH_VERSATILE && !SUPERH && !BLACKFIN
-+	depends on !ARCH_ACORN && !ARCH_EBSA110 && !4xx && !8xx && !SPARC && !M68K && !PARISC && !FRV && !ARCH_VERSATILE && !SUPERH && !BLACKFIN && !AVR32
- 	default y
- 	help
- 	  Saying Y here will allow you to use Linux in text mode through a
---- a/drivers/watchdog/Kconfig
-+++ b/drivers/watchdog/Kconfig
-@@ -223,7 +223,7 @@
- 
- config AT32AP700X_WDT
- 	tristate "AT32AP700x watchdog"
--	depends on CPU_AT32AP7000
-+	depends on CPU_AT32AP700X
- 	help
- 	  Watchdog timer embedded into AT32AP700x devices. This will reboot
- 	  your system when the timeout is reached.
---- a/include/asm-avr32/arch-at32ap/at32ap7000.h
-+++ /dev/null
-@@ -1,35 +0,0 @@
++	  UBIFS is a file system for flash devices which works on top of UBI.
++
++config UBIFS_FS_XATTR
++	bool "Extended attributes support"
++	depends on UBIFS_FS
++	help
++	  This option enables support of extended attributes.
++
++config UBIFS_FS_ADVANCED_COMPR
++	bool "Advanced compression options"
++	depends on UBIFS_FS
++	help
++	  This option allows to explicitly choose which compressions, if any,
++	  are enabled in UBIFS. Removing compressors means inbility to read
++	  existing file systems.
++
++	  If unsure, say 'N'.
++
++config UBIFS_FS_LZO
++	bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR
++	depends on UBIFS_FS
++	default y
++	help
++	   LZO compressor is generally faster then zlib but compresses worse.
++	   Say 'Y' if unsure.
++
++config UBIFS_FS_ZLIB
++	bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR
++	depends on UBIFS_FS
++	default y
++	help
++	  Zlib copresses better then LZO but it is slower. Say 'Y' if unsure.
++
++# Debugging-related stuff
++config UBIFS_FS_DEBUG
++	bool "Enable debugging"
++	depends on UBIFS_FS
++	select DEBUG_FS
++	select KALLSYMS_ALL
++	help
++	  This option enables UBIFS debugging.
++
++config UBIFS_FS_DEBUG_MSG_LVL
++	int "Default message level (0 = no extra messages, 3 = lots)"
++	depends on UBIFS_FS_DEBUG
++	default "0"
++	help
++	  This controls the amount of debugging messages produced by UBIFS.
++	  If reporting bugs, please try to have available a full dump of the
++	  messages at level 1 while the misbehaviour was occurring. Level 2
++	  may become necessary if level 1 messages were not enough to find the
++	  bug. Generally Level 3 should be avoided.
++
++config UBIFS_FS_DEBUG_CHKS
++	bool "Enable extra checks"
++	depends on UBIFS_FS_DEBUG
++	help
++	  If extra checks are enabled UBIFS will check the consistency of its
++	  internal data structures during operation. However, UBIFS performance
++	  is dramatically slower when this option is selected especially if the
++	  file system is large.
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/key.h avr32-2.6/fs/ubifs/key.h
+--- linux-2.6.25.6/fs/ubifs/key.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/key.h	2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,533 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This header contains various key-related definitions and helper function.
++ * UBIFS allows several key schemes, so we access key fields only via these
++ * helpers. At the moment only one key scheme is supported.
++ *
++ * Simple key scheme
++ * ~~~~~~~~~~~~~~~~~
++ *
++ * Keys are 64-bits long. First 32-bits are inode number (parent inode number
++ * in case of direntry key). Next 3 bits are node type. The last 29 bits are
++ * 4KiB offset in case of inode node, and direntry hash in case of a direntry
++ * node. We use "r5" hash borrowed from reiserfs.
++ */
++
++#ifndef __UBIFS_KEY_H__
++#define __UBIFS_KEY_H__
++
++/**
++ * key_r5_hash - R5 hash function (borrowed from reiserfs).
++ * @s: direntry name
++ * @len: name length
++ */
++static inline uint32_t key_r5_hash(const char *s, int len)
++{
++	uint32_t a = 0;
++	const signed char *str = (const signed char *)s;
++
++	while (*str) {
++		a += *str << 4;
++		a += *str >> 4;
++		a *= 11;
++		str++;
++	}
++
++	a &= UBIFS_S_KEY_HASH_MASK;
++
++	/*
++	 * We use hash values as offset in directories, so values %0 and %1 are
++	 * reserved for "." and "..". %2 is reserved for "end of readdir"
++	 * marker.
++	 */
++	if (unlikely(a >= 0 && a <= 2))
++		a += 3;
++	return a;
++}
++
++/**
++ * key_test_hash - testing hash function.
++ * @str: direntry name
++ * @len: name length
++ */
++static inline uint32_t key_test_hash(const char *str, int len)
++{
++	uint32_t a = 0;
++
++	len = min_t(uint32_t, len, 4);
++	memcpy(&a, str, len);
++	a &= UBIFS_S_KEY_HASH_MASK;
++	if (unlikely(a >= 0 && a <= 2))
++		a += 3;
++	return a;
++}
++
++/**
++ * ino_key_init - initialize inode key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ */
++static inline void ino_key_init(const struct ubifs_info *c,
++				union ubifs_key *key, ino_t inum)
++{
++	key->u32[0] = inum;
++	key->u32[1] = UBIFS_INO_KEY << UBIFS_S_KEY_BLOCK_BITS;
++}
++
++/**
++ * ino_key_init_flash - initialize on-flash inode key.
++ * @c: UBIFS file-system description object
++ * @k: key to initialize
++ * @inum: inode number
++ */
++static inline void ino_key_init_flash(const struct ubifs_info *c, void *k,
++				      ino_t inum)
++{
++	union ubifs_key *key = k;
++
++	key->j32[0] = cpu_to_le32(inum);
++	key->j32[1] = cpu_to_le32(UBIFS_INO_KEY << UBIFS_S_KEY_BLOCK_BITS);
++	memset(k + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * lowest_ino_key - get the lowest possible inode key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ */
++static inline void lowest_ino_key(const struct ubifs_info *c,
++				union ubifs_key *key, ino_t inum)
++{
++	key->u32[0] = inum;
++	key->u32[1] = 0;
++}
++
++/**
++ * highest_ino_key - get the highest possible inode key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ */
++static inline void highest_ino_key(const struct ubifs_info *c,
++				union ubifs_key *key, ino_t inum)
++{
++	key->u32[0] = inum;
++	key->u32[1] = 0xffffffff;
++}
++
++/**
++ * dent_key_init - initialize directory entry key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: parent inode number
++ * @nm: direntry name and length
++ */
++static inline void dent_key_init(const struct ubifs_info *c,
++				 union ubifs_key *key, ino_t inum,
++				 const struct qstr *nm)
++{
++	uint32_t hash = c->key_hash(nm->name, nm->len);
++
++	ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++	key->u32[0] = inum;
++	key->u32[1] = hash | (UBIFS_DENT_KEY << UBIFS_S_KEY_HASH_BITS);
++}
++
++/**
++ * dent_key_init_hash - initialize directory entry key without re-calculating
++ *                      hash function.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: parent inode number
++ * @hash: direntry name hash
++ */
++static inline void dent_key_init_hash(const struct ubifs_info *c,
++				      union ubifs_key *key, ino_t inum,
++				      uint32_t hash)
++{
++	ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++	key->u32[0] = inum;
++	key->u32[1] = hash | (UBIFS_DENT_KEY << UBIFS_S_KEY_HASH_BITS);
++}
++
++/**
++ * dent_key_init_flash - initialize on-flash directory entry key.
++ * @c: UBIFS file-system description object
++ * @k: key to initialize
++ * @inum: parent inode number
++ * @nm: direntry name and length
++ */
++static inline void dent_key_init_flash(const struct ubifs_info *c, void *k,
++				       ino_t inum, const struct qstr *nm)
++{
++	union ubifs_key *key = k;
++	uint32_t hash = c->key_hash(nm->name, nm->len);
++
++	ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++	key->j32[0] = cpu_to_le32(inum);
++	key->j32[1] = cpu_to_le32(hash |
++				  (UBIFS_DENT_KEY << UBIFS_S_KEY_HASH_BITS));
++	memset(k + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * lowest_dent_key - get the lowest possible directory entry key.
++ * @c: UBIFS file-system description object
++ * @key: where to store the lowest key
++ * @inum: parent inode number
++ */
++static inline void lowest_dent_key(const struct ubifs_info *c,
++				   union ubifs_key *key, ino_t inum)
++{
++	key->u32[0] = inum;
++	key->u32[1] = UBIFS_DENT_KEY << UBIFS_S_KEY_HASH_BITS;
++}
++
++/**
++ * xent_key_init - initialize extended attribute entry key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: host inode number
++ * @nm: extended attribute entry name and length
++ */
++static inline void xent_key_init(const struct ubifs_info *c,
++				 union ubifs_key *key, ino_t inum,
++				 const struct qstr *nm)
++{
++	uint32_t hash = c->key_hash(nm->name, nm->len);
++
++	ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++	key->u32[0] = inum;
++	key->u32[1] = hash | (UBIFS_XENT_KEY << UBIFS_S_KEY_HASH_BITS);
++}
++
++/**
++ * xent_key_init_hash - initialize extended attribute entry key without
++ *                      re-calculating hash function.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: host inode number
++ * @hash: extended attribute entry name hash
++ */
++static inline void xent_key_init_hash(const struct ubifs_info *c,
++				      union ubifs_key *key, ino_t inum,
++				      uint32_t hash)
++{
++	ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++	key->u32[0] = inum;
++	key->u32[1] = hash | (UBIFS_XENT_KEY << UBIFS_S_KEY_HASH_BITS);
++}
++
++/**
++ * xent_key_init_flash - initialize on-flash extended attribute entry key.
++ * @c: UBIFS file-system description object
++ * @k: key to initialize
++ * @inum: host inode number
++ * @nm: extended attribute entry name and length
++ */
++static inline void xent_key_init_flash(const struct ubifs_info *c, void *k,
++				       ino_t inum, const struct qstr *nm)
++{
++	union ubifs_key *key = k;
++	uint32_t hash = c->key_hash(nm->name, nm->len);
++
++	ubifs_assert(!(hash & ~UBIFS_S_KEY_HASH_MASK));
++	key->j32[0] = cpu_to_le32(inum);
++	key->j32[1] = cpu_to_le32(hash |
++				  (UBIFS_XENT_KEY << UBIFS_S_KEY_HASH_BITS));
++	memset(k + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * lowest_xent_key - get the lowest possible extended attribute entry key.
++ * @c: UBIFS file-system description object
++ * @key: where to store the lowest key
++ * @inum: host inode number
++ */
++static inline void lowest_xent_key(const struct ubifs_info *c,
++				   union ubifs_key *key, ino_t inum)
++{
++	key->u32[0] = inum;
++	key->u32[1] = UBIFS_XENT_KEY << UBIFS_S_KEY_HASH_BITS;
++}
++
++/**
++ * data_key_init - initialize data key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ * @block: block number
++ */
++static inline void data_key_init(const struct ubifs_info *c,
++				 union ubifs_key *key, ino_t inum,
++				 unsigned int block)
++{
++	ubifs_assert(!(block & ~UBIFS_S_KEY_BLOCK_MASK));
++	key->u32[0] = inum;
++	key->u32[1] = block | (UBIFS_DATA_KEY << UBIFS_S_KEY_BLOCK_BITS);
++}
++
++/**
++ * data_key_init_flash - initialize on-flash data key.
++ * @c: UBIFS file-system description object
++ * @k: key to initialize
++ * @inum: inode number
++ * @block: block number
++ */
++static inline void data_key_init_flash(const struct ubifs_info *c, void *k,
++				       ino_t inum, unsigned int block)
++{
++	union ubifs_key *key = k;
++
++	ubifs_assert(!(block & ~UBIFS_S_KEY_BLOCK_MASK));
++	key->j32[0] = cpu_to_le32(inum);
++	key->j32[1] = cpu_to_le32(block |
++				  (UBIFS_DATA_KEY << UBIFS_S_KEY_BLOCK_BITS));
++	memset(k + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * trun_key_init - initialize truncation node key.
++ * @c: UBIFS file-system description object
++ * @key: key to initialize
++ * @inum: inode number
++ *
++ * Note, UBIFS does not have truncation keys on the media and this function is
++ * only used for purposes of replay.
++ */
++static inline void trun_key_init(const struct ubifs_info *c,
++				 union ubifs_key *key, ino_t inum)
++{
++	key->u32[0] = inum;
++	key->u32[1] = UBIFS_TRUN_KEY << UBIFS_S_KEY_BLOCK_BITS;
++}
++
++/**
++ * key_type - get key type.
++ * @c: UBIFS file-system description object
++ * @key: key to get type of
++ */
++static inline int key_type(const struct ubifs_info *c,
++			   const union ubifs_key *key)
++{
++	return key->u32[1] >> UBIFS_S_KEY_BLOCK_BITS;
++}
++
++/**
++ * key_type_flash - get type of a on-flash formatted key.
++ * @c: UBIFS file-system description object
++ * @k: key to get type of
++ */
++static inline int key_type_flash(const struct ubifs_info *c, const void *k)
++{
++	const union ubifs_key *key = k;
++
++	return le32_to_cpu(key->u32[1]) >> UBIFS_S_KEY_BLOCK_BITS;
++}
++
++/**
++ * key_inum - fetch inode number from key.
++ * @c: UBIFS file-system description object
++ * @k: key to fetch inode number from
++ */
++static inline ino_t key_inum(const struct ubifs_info *c, const void *k)
++{
++	const union ubifs_key *key = k;
++
++	return key->u32[0];
++}
++
++/**
++ * key_inum_flash - fetch inode number from an on-flash formatted key.
++ * @c: UBIFS file-system description object
++ * @k: key to fetch inode number from
++ */
++static inline ino_t key_inum_flash(const struct ubifs_info *c, const void *k)
++{
++	const union ubifs_key *key = k;
++
++	return le32_to_cpu(key->j32[0]);
++}
++
++/**
++ * key_hash - get directory entry hash.
++ * @c: UBIFS file-system description object
++ * @key: the key to get hash from
++ */
++static inline int key_hash(const struct ubifs_info *c,
++			   const union ubifs_key *key)
++{
++	return key->u32[1] & UBIFS_S_KEY_HASH_MASK;
++}
++
++/**
++ * key_hash_flash - get directory entry hash from an on-flash formatted key.
++ * @c: UBIFS file-system description object
++ * @k: the key to get hash from
++ */
++static inline int key_hash_flash(const struct ubifs_info *c, const void *k)
++{
++	const union ubifs_key *key = k;
++
++	return le32_to_cpu(key->j32[1]) & UBIFS_S_KEY_HASH_MASK;
++}
++
++/**
++ * key_block - get data block number.
++ * @c: UBIFS file-system description object
++ * @key: the key to get the block number from
++ */
++static inline unsigned int key_block(const struct ubifs_info *c,
++				     const union ubifs_key *key)
++{
++	return key->u32[1] & UBIFS_S_KEY_BLOCK_MASK;
++}
++
++/**
++ * key_block_flash - get data block number from an on-flash formatted key.
++ * @c: UBIFS file-system description object
++ * @k: the key to get the block number from
++ */
++static inline unsigned int key_block_flash(const struct ubifs_info *c,
++					   const void *k)
++{
++	const union ubifs_key *key = k;
++
++	return le32_to_cpu(key->u32[1]) & UBIFS_S_KEY_BLOCK_MASK;
++}
++
++/**
++ * key_read - transform a key to in-memory format.
++ * @c: UBIFS file-system description object
++ * @from: the key to transform
++ * @to: the key to store the result
++ */
++static inline void key_read(const struct ubifs_info *c, const void *from,
++			    union ubifs_key *to)
++{
++	const union ubifs_key *f = from;
++
++	to->u32[0] = le32_to_cpu(f->j32[0]);
++	to->u32[1] = le32_to_cpu(f->j32[1]);
++}
++
++/**
++ * key_write - transform a key from in-memory format.
++ * @c: UBIFS file-system description object
++ * @from: the key to transform
++ * @to: the key to store the result
++ */
++static inline void key_write(const struct ubifs_info *c,
++			     const union ubifs_key *from, void *to)
++{
++	union ubifs_key *t = to;
++
++	t->j32[0] = cpu_to_le32(from->u32[0]);
++	t->j32[1] = cpu_to_le32(from->u32[1]);
++	memset(to + 8, 0, UBIFS_MAX_KEY_LEN - 8);
++}
++
++/**
++ * key_write_idx - transform a key from in-memory format for the index.
++ * @c: UBIFS file-system description object
++ * @from: the key to transform
++ * @to: the key to store the result
++ */
++static inline void key_write_idx(const struct ubifs_info *c,
++				 const union ubifs_key *from, void *to)
++{
++	union ubifs_key *t = to;
++
++	t->j32[0] = cpu_to_le32(from->u32[0]);
++	t->j32[1] = cpu_to_le32(from->u32[1]);
++}
++
++/**
++ * key_copy - copy a key.
++ * @c: UBIFS file-system description object
++ * @from: the key to copy from
++ * @to: the key to copy to
++ */
++static inline void key_copy(const struct ubifs_info *c,
++			    const union ubifs_key *from, union ubifs_key *to)
++{
++	to->u64[0] = from->u64[0];
++}
++
++/**
++ * keys_cmp - compare keys.
++ * @c: UBIFS file-system description object
++ * @key1: the first key to compare
++ * @key2: the second key to compare
++ *
++ * This function compares 2 keys and returns %-1 if @key1 is less than
++ * @key2, 0 if the keys are equivalent and %1 if @key1 is greater than @key2.
++ */
++static inline int keys_cmp(const struct ubifs_info *c,
++			   const union ubifs_key *key1,
++			   const union ubifs_key *key2)
++{
++	if (key1->u32[0] < key2->u32[0])
++		return -1;
++	if (key1->u32[0] > key2->u32[0])
++		return 1;
++	if (key1->u32[1] < key2->u32[1])
++		return -1;
++	if (key1->u32[1] > key2->u32[1])
++		return 1;
++
++	return 0;
++}
++
++/**
++ * is_hash_key - is a key vulnerable to hash collisions.
++ * @c: UBIFS file-system description object
++ * @key: key
++ *
++ * This function returns %1 if @key is a hashed key or %0 otherwise.
++ */
++static inline int is_hash_key(const struct ubifs_info *c,
++			      const union ubifs_key *key)
++{
++	int type = key_type(c, key);
++
++	return type == UBIFS_DENT_KEY || type == UBIFS_XENT_KEY;
++}
++
++/**
++ * key_max_inode_size - get maximum file size allowed by current key format.
++ * @c: UBIFS file-system description object
++ */
++static inline unsigned long long key_max_inode_size(const struct ubifs_info *c)
++{
++	switch (c->key_fmt) {
++	case UBIFS_SIMPLE_KEY_FMT:
++		return (1ULL << UBIFS_S_KEY_BLOCK_BITS) * UBIFS_BLOCK_SIZE;
++	default:
++		return 0;
++	}
++}
++#endif /* !__UBIFS_KEY_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/log.c avr32-2.6/fs/ubifs/log.c
+--- linux-2.6.25.6/fs/ubifs/log.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/log.c	2008-06-12 15:09:45.367815766 +0200
+@@ -0,0 +1,799 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file is a part of UBIFS journal implementation and contains various
++ * functions which manipulate the log. The log is a fixed area on the flash
++ * which does not contain any data but refers to buds. The log is a part of the
++ * journal.
++ */
++
++#include "ubifs.h"
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++static int dbg_check_bud_bytes(struct ubifs_info *c);
++#else
++#define dbg_check_bud_bytes(c) 0
++#endif
++
++/**
++ * ubifs_search_bud - search bud LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: logical eraseblock number to search
++ *
++ * This function searches bud LEB @lnum. Returns bud description object in case
++ * of success and %NULL if there is no bud with this LEB number.
++ */
++struct ubifs_bud *ubifs_search_bud(struct ubifs_info *c, int lnum)
++{
++	struct rb_node *p;
++	struct ubifs_bud *bud;
++
++	spin_lock(&c->buds_lock);
++	p = c->buds.rb_node;
++	while (p) {
++		bud = rb_entry(p, struct ubifs_bud, rb);
++		if (lnum < bud->lnum)
++			p = p->rb_left;
++		else if (lnum > bud->lnum)
++			p = p->rb_right;
++		else {
++			spin_unlock(&c->buds_lock);
++			return bud;
++		}
++	}
++	spin_unlock(&c->buds_lock);
++	return NULL;
++}
++
++/**
++ * ubifs_get_wbuf - get the wbuf associated with a LEB, if there is one.
++ * @c: UBIFS file-system description object
++ * @lnum: logical eraseblock number to search
++ *
++ * This functions returns the wbuf for @lnum or %NULL if there is not one.
++ */
++struct ubifs_wbuf *ubifs_get_wbuf(struct ubifs_info *c, int lnum)
++{
++	struct rb_node *p;
++	struct ubifs_bud *bud;
++	int jhead;
++
++	if (!c->jheads)
++		return NULL;
++
++	spin_lock(&c->buds_lock);
++	p = c->buds.rb_node;
++	while (p) {
++		bud = rb_entry(p, struct ubifs_bud, rb);
++		if (lnum < bud->lnum)
++			p = p->rb_left;
++		else if (lnum > bud->lnum)
++			p = p->rb_right;
++		else {
++			jhead = bud->jhead;
++			spin_unlock(&c->buds_lock);
++			return &c->jheads[jhead].wbuf;
++		}
++	}
++	spin_unlock(&c->buds_lock);
++	return NULL;
++}
++
++/**
++ * next_log_lnum - switch to the next log LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: current log LEB
++ */
++static inline int next_log_lnum(const struct ubifs_info *c, int lnum)
++{
++	lnum += 1;
++	if (lnum > c->log_last)
++		lnum = UBIFS_LOG_LNUM;
++
++	return lnum;
++}
++
++/**
++ * empty_log_bytes - calculate amount of empty space in the log.
++ * @c: UBIFS file-system description object
++ */
++static inline long long empty_log_bytes(const struct ubifs_info *c)
++{
++	long long h, t;
++
++	h = c->lhead_lnum * c->leb_size + c->lhead_offs;
++	t = c->ltail_lnum * c->leb_size;
++
++	if (h >= t)
++		return c->log_bytes - h + t;
++	else
++		return t - h;
++}
++
++/**
++ * ubifs_add_bud - add bud LEB to the tree of buds and its journal head list.
++ * @c: UBIFS file-system description object
++ * @bud: the bud to add
++ */
++void ubifs_add_bud(struct ubifs_info *c, struct ubifs_bud *bud)
++{
++	struct rb_node **p, *parent = NULL;
++	struct ubifs_bud *b;
++	struct ubifs_jhead *jhead;
++
++	spin_lock(&c->buds_lock);
++	p = &c->buds.rb_node;
++	while (*p) {
++		parent = *p;
++		b = rb_entry(parent, struct ubifs_bud, rb);
++		ubifs_assert(bud->lnum != b->lnum);
++		if (bud->lnum < b->lnum)
++			p = &(*p)->rb_left;
++		else
++			p = &(*p)->rb_right;
++	}
++
++	rb_link_node(&bud->rb, parent, p);
++	rb_insert_color(&bud->rb, &c->buds);
++	if (c->jheads) {
++		jhead = &c->jheads[bud->jhead];
++		list_add_tail(&bud->list, &jhead->buds_list);
++	} else
++		ubifs_assert(c->replaying && (c->vfs_sb->s_flags & MS_RDONLY));
++
++	/*
++	 * Note, although this is a new bud, we anyway account this space now,
++	 * before any data has been written to it, because this is about to
++	 * guarantee fixed mount time, and this bud will anyway be read and
++	 * scanned.
++	 */
++	c->bud_bytes += c->leb_size - bud->start;
++
++	dbg_log("LEB %d:%d, jhead %d, bud_bytes %lld", bud->lnum,
++		bud->start, bud->jhead, c->bud_bytes);
++	spin_unlock(&c->buds_lock);
++}
++
++/**
++ * ubifs_create_buds_lists - create journal head buds lists for remount rw.
++ * @c: UBIFS file-system description object
++ */
++void ubifs_create_buds_lists(struct ubifs_info *c)
++{
++	struct rb_node *p;
++
++	spin_lock(&c->buds_lock);
++	p = rb_first(&c->buds);
++	while (p) {
++		struct ubifs_bud *bud = rb_entry(p, struct ubifs_bud, rb);
++		struct ubifs_jhead *jhead = &c->jheads[bud->jhead];
++
++		list_add_tail(&bud->list, &jhead->buds_list);
++		p = rb_next(p);
++	}
++	spin_unlock(&c->buds_lock);
++}
++
++/**
++ * ubifs_add_bud_to_log - add a new bud to the log.
++ * @c: UBIFS file-system description object
++ * @jhead: journal head the bud belongs to
++ * @lnum: LEB number of the bud
++ * @offs: starting offset of the bud
++ *
++ * This function writes reference node for the new bud LEB @lnum it to the log,
++ * and adds it to the buds tress. It also makes sure that log size does not
++ * exceed the 'c->max_bud_bytes' limit. Returns zero in case of success,
++ * %-EAGAIN if commit is required, and a negative error codes in case of
++ * failure.
++ */
++int ubifs_add_bud_to_log(struct ubifs_info *c, int jhead, int lnum, int offs)
++{
++	int err;
++	struct ubifs_bud *bud;
++	struct ubifs_ref_node *ref;
++
++	bud = kmalloc(sizeof(struct ubifs_bud), GFP_NOFS);
++	if (!bud)
++		return -ENOMEM;
++	ref = kzalloc(c->ref_node_alsz, GFP_NOFS);
++	if (!ref) {
++		kfree(bud);
++		return -ENOMEM;
++	}
++
++	mutex_lock(&c->log_mutex);
++	/* Make sure we have enough space in the log */
++	if (empty_log_bytes(c) - c->ref_node_alsz < c->min_log_bytes) {
++		dbg_log("not enough log space - %lld, required %d",
++			empty_log_bytes(c), c->min_log_bytes);
++		ubifs_commit_required(c);
++		err = -EAGAIN;
++		goto out_unlock;
++	}
++
++	/*
++	 * Make sure the the amount of space in buds will not exceed
++	 * 'c->max_bud_bytes' limit, because we want to guarantee mount time
++	 * limits.
++	 *
++	 * It is not necessary to hold @c->buds_lock when reading @c->bud_bytes
++	 * because we are holding @c->log_mutex. All @c->bud_bytes take place
++	 * when both @c->log_mutex and @c->bud_bytes are locked.
++	 */
++	if (c->bud_bytes + c->leb_size - offs > c->max_bud_bytes) {
++		dbg_log("bud bytes %lld (%lld max), require commit",
++			c->bud_bytes, c->max_bud_bytes);
++		ubifs_commit_required(c);
++		err = -EAGAIN;
++		goto out_unlock;
++	}
++
++	/*
++	 * If the journal is full enough - start background commit. Note, it is
++	 * OK to read 'c->cmt_state' without spinlock because integer reads
++	 * are atomic in the kernel.
++	 */
++	if (c->bud_bytes >= c->bg_bud_bytes &&
++	    c->cmt_state == COMMIT_RESTING) {
++		dbg_log("bud bytes %lld (%lld max), initiate BG commit",
++			c->bud_bytes, c->max_bud_bytes);
++		ubifs_request_bg_commit(c);
++	}
++
++	bud->lnum = lnum;
++	bud->start = offs;
++	bud->jhead = jhead;
++
++	ref->ch.node_type = UBIFS_REF_NODE;
++	ref->lnum = cpu_to_le32(bud->lnum);
++	ref->offs = cpu_to_le32(bud->start);
++	ref->jhead = cpu_to_le32(jhead);
++
++	if (c->lhead_offs > c->leb_size - c->ref_node_alsz) {
++		c->lhead_lnum = next_log_lnum(c, c->lhead_lnum);
++		c->lhead_offs = 0;
++	}
++
++	if (c->lhead_offs == 0) {
++		/* Must ensure next log LEB has been unmapped */
++		err = ubifs_leb_unmap(c, c->lhead_lnum);
++		if (err)
++			goto out_unlock;
++	}
++
++	if (bud->start == 0) {
++		/*
++		 * Before writing the LEB reference which refers an empty LEB
++		 * to the log, we have to make sure it is mapped, because
++		 * otherwise we'd risk to refer an LEB with garbage in case of
++		 * an unclean reboot, because the target LEB might have been
++		 * unmapped, but not yet physically erased.
++		 */
++		err = ubi_leb_map(c->ubi, bud->lnum, UBI_SHORTTERM);
++		if (err)
++			goto out_unlock;
++	}
++
++	dbg_log("write ref LEB %d:%d",
++		c->lhead_lnum, c->lhead_offs);
++	err = ubifs_write_node(c, ref, UBIFS_REF_NODE_SZ, c->lhead_lnum,
++			       c->lhead_offs, UBI_SHORTTERM);
++	c->lhead_offs += c->ref_node_alsz;
++	if (err)
++		goto out_unlock;
++
++	ubifs_add_bud(c, bud);
++
++	mutex_unlock(&c->log_mutex);
++	kfree(ref);
++	return 0;
++
++out_unlock:
++	mutex_unlock(&c->log_mutex);
++	kfree(ref);
++	kfree(bud);
++	return err;
++}
++
++/**
++ * remove_buds - remove used buds.
++ * @c: UBIFS file-system description object
++ *
++ * This function removes use buds from the buds tree. It does not remove the
++ * buds which are pointed to by journal heads.
++ */
++static void remove_buds(struct ubifs_info *c)
++{
++	struct rb_node *p;
++
++	ubifs_assert(list_empty(&c->old_buds));
++	c->cmt_bud_bytes = 0;
++	spin_lock(&c->buds_lock);
++	p = rb_first(&c->buds);
++	while (p) {
++		struct rb_node *p1 = p;
++		struct ubifs_bud *bud;
++		struct ubifs_wbuf *wbuf;
++
++		p = rb_next(p);
++		bud = rb_entry(p1, struct ubifs_bud, rb);
++		wbuf = &c->jheads[bud->jhead].wbuf;
++
++		if (wbuf->lnum == bud->lnum) {
++			/*
++			 * Do not remove buds which are pointed to by journal
++			 * heads (non-closed buds).
++			 */
++			c->cmt_bud_bytes += wbuf->offs - bud->start;
++			dbg_log("preserve %d:%d, jhead %d, bud bytes %d, "
++				"cmt_bud_bytes %lld", bud->lnum, bud->start,
++				bud->jhead, wbuf->offs - bud->start,
++				c->cmt_bud_bytes);
++			bud->start = wbuf->offs;
++		} else {
++			c->cmt_bud_bytes += c->leb_size - bud->start;
++			dbg_log("remove %d:%d, jhead %d, bud bytes %d, "
++				"cmt_bud_bytes %lld", bud->lnum, bud->start,
++				bud->jhead, c->leb_size - bud->start,
++				c->cmt_bud_bytes);
++			rb_erase(p1, &c->buds);
++			list_del(&bud->list);
++			/*
++			 * If the commit does not finish, the recovery will need
++			 * to replay the journal, in which case the old buds
++			 * must be unchanged. Do not release them until post
++			 * commit i.e. do not allow them to be garbage
++			 * collected.
++			 */
++			list_add(&bud->list, &c->old_buds);
++		}
++	}
++	spin_unlock(&c->buds_lock);
++}
++
++/**
++ * ubifs_log_start_commit - start commit.
++ * @c: UBIFS file-system description object
++ * @ltail_lnum: return new log tail LEB number
++ *
++ * The commit operation starts with writing "commit start" node to the log and
++ * reference nodes for all journal heads which will define new journal after
++ * the commit has been finished. The commit start and reference nodes are
++ * written in one go to the nearest empty log LEB (hence, when commit is
++ * finished UBIFS may safely unmap all the previous log LEBs). This function
++ * returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++int ubifs_log_start_commit(struct ubifs_info *c, int *ltail_lnum)
++{
++	void *buf;
++	struct ubifs_cs_node *cs;
++	struct ubifs_ref_node *ref;
++	int err, i, max_len, len;
++
++	err = dbg_check_bud_bytes(c);
++	if (err)
++		return err;
++
++	max_len = UBIFS_CS_NODE_SZ + c->jhead_cnt * UBIFS_REF_NODE_SZ;
++	max_len = ALIGN(max_len, c->min_io_size);
++	buf = cs = kmalloc(max_len, GFP_NOFS);
++	if (!buf)
++		return -ENOMEM;
++
++	cs->ch.node_type = UBIFS_CS_NODE;
++	cs->cmt_no = cpu_to_le64(c->cmt_no + 1);
++	ubifs_prepare_node(c, cs, UBIFS_CS_NODE_SZ, 0);
++
++	/*
++	 * Note, we do not lock 'c->log_mutex' because this is the commit start
++	 * phase and we are exclusively using the log. And we do not lock
++	 * write-buffer because nobody can write to the file-system at this
++	 * phase.
++	 */
++
++	len = UBIFS_CS_NODE_SZ;
++	for (i = 0; i < c->jhead_cnt; i++) {
++		int lnum = c->jheads[i].wbuf.lnum;
++		int offs = c->jheads[i].wbuf.offs;
++
++		if (lnum == -1 || offs == c->leb_size)
++			continue;
++
++		dbg_log("add ref to LEB %d:%d for jhead %d", lnum, offs, i);
++		ref = buf + len;
++		ref->ch.node_type = UBIFS_REF_NODE;
++		ref->lnum = cpu_to_le32(lnum);
++		ref->offs = cpu_to_le32(offs);
++		ref->jhead = cpu_to_le32(i);
++
++		ubifs_prepare_node(c, ref, UBIFS_REF_NODE_SZ, 0);
++		len += UBIFS_REF_NODE_SZ;
++	}
++
++	ubifs_pad(c, buf + len, ALIGN(len, c->min_io_size) - len);
++
++	/* Switch to the next log LEB */
++	if (c->lhead_offs) {
++		c->lhead_lnum = next_log_lnum(c, c->lhead_lnum);
++		c->lhead_offs = 0;
++	}
++
++	if (c->lhead_offs == 0) {
++		/* Must ensure next LEB has been unmapped */
++		err = ubifs_leb_unmap(c, c->lhead_lnum);
++		if (err)
++			goto out;
++	}
++
++	len = ALIGN(len, c->min_io_size);
++	dbg_log("writing commit start at LEB %d:0, len %d", c->lhead_lnum, len);
++	err = ubifs_leb_write(c, c->lhead_lnum, cs, 0, len, UBI_SHORTTERM);
++	if (err)
++		goto out;
++
++	*ltail_lnum = c->lhead_lnum;
++
++	c->lhead_offs += len;
++	if (c->lhead_offs == c->leb_size) {
++		c->lhead_lnum = next_log_lnum(c, c->lhead_lnum);
++		c->lhead_offs = 0;
++	}
++
++	remove_buds(c);
++
++	/*
++	 * We have started the commit and now users may use the rest of the log
++	 * for new writes.
++	 */
++	c->min_log_bytes = 0;
++
++out:
++	kfree(buf);
++	return err;
++}
++
++/**
++ * ubifs_log_end_commit - end commit.
++ * @c: UBIFS file-system description object
++ * @ltail_lnum: new log tail LEB number
++ *
++ * This function is called on when the commit operation was finished. It
++ * moves log tail to new position and unmaps LEBs which contain obsolete data.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++int ubifs_log_end_commit(struct ubifs_info *c, int ltail_lnum)
++{
++	int err;
++
++	/*
++	 * At this phase we have to lock 'c->log_mutex' because UBIFS allows FS
++	 * writes during commit. Its only short "commit" start phase when
++	 * writers are blocked.
++	 */
++	mutex_lock(&c->log_mutex);
++
++	dbg_log("old tail was LEB %d:0, new tail is LEB %d:0",
++		c->ltail_lnum, ltail_lnum);
++
++	c->ltail_lnum = ltail_lnum;
++	/*
++	 * The commit is finished and from now on it must be guaranteed that
++	 * there is always enough space for the next commit.
++	 */
++	c->min_log_bytes = c->leb_size;
++
++	spin_lock(&c->buds_lock);
++	c->bud_bytes -= c->cmt_bud_bytes;
++	spin_unlock(&c->buds_lock);
++
++	err = dbg_check_bud_bytes(c);
++
++	mutex_unlock(&c->log_mutex);
++	return err;
++}
++
++/**
++ * ubifs_log_post_commit - things to do after commit is completed.
++ * @c: UBIFS file-system description object
++ * @old_ltail_lnum: old log tail LEB number
++ *
++ * Release buds only after commit is completed, because they must be unchanged
++ * if recovery is needed.
++ *
++ * Unmap log LEBs only after commit is completed, because they may be needed for
++ * recovery.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_log_post_commit(struct ubifs_info *c, int old_ltail_lnum)
++{
++	int lnum, err = 0;
++
++	while (!list_empty(&c->old_buds)) {
++		struct ubifs_bud *bud;
++
++		bud = list_entry(c->old_buds.next, struct ubifs_bud, list);
++		err = ubifs_return_leb(c, bud->lnum);
++		if (err)
++			return err;
++		list_del(&bud->list);
++		kfree(bud);
++	}
++	mutex_lock(&c->log_mutex);
++	for (lnum = old_ltail_lnum; lnum != c->ltail_lnum;
++	     lnum = next_log_lnum(c, lnum)) {
++		dbg_log("unmap log LEB %d", lnum);
++		err = ubifs_leb_unmap(c, lnum);
++		if (err)
++			goto out;
++	}
++out:
++	mutex_unlock(&c->log_mutex);
++	return err;
++}
++
++/**
++ * struct done_ref - references that have been done.
++ * @rb: rb-tree node
++ * @lnum: LEB number
++ */
++struct done_ref {
++	struct rb_node rb;
++	int lnum;
++};
++
++/**
++ * done_already - determine if a reference has been done already.
++ * @done_tree: rb-tree to store references that have been done
++ * @lnum: LEB number of reference
++ *
++ * This function returns %1 if the reference has been done, %0 if not, otherwise
++ * a negative error code is returned.
++ */
++static int done_already(struct rb_root *done_tree, int lnum)
++{
++	struct rb_node **p = &done_tree->rb_node, *parent = NULL;
++	struct done_ref *dr;
++
++	while (*p) {
++		parent = *p;
++		dr = rb_entry(parent, struct done_ref, rb);
++		if (lnum < dr->lnum)
++			p = &(*p)->rb_left;
++		else if (lnum > dr->lnum)
++			p = &(*p)->rb_right;
++		else
++			return 1;
++	}
++
++	dr = kzalloc(sizeof(struct done_ref), GFP_NOFS);
++	if (!dr)
++		return -ENOMEM;
++
++	dr->lnum = lnum;
++
++	rb_link_node(&dr->rb, parent, p);
++	rb_insert_color(&dr->rb, done_tree);
++
++	return 0;
++}
++
++/**
++ * destroy_done_tree - destroy the done tree.
++ * @done_tree: done tree to destroy
++ */
++static void destroy_done_tree(struct rb_root *done_tree)
++{
++	struct rb_node *this = done_tree->rb_node;
++	struct done_ref *dr;
++
++	while (this) {
++		if (this->rb_left) {
++			this = this->rb_left;
++			continue;
++		} else if (this->rb_right) {
++			this = this->rb_right;
++			continue;
++		}
++		dr = rb_entry(this, struct done_ref, rb);
++		this = rb_parent(this);
++		if (this) {
++			if (this->rb_left == &dr->rb)
++				this->rb_left = NULL;
++			else
++				this->rb_right = NULL;
++		}
++		kfree(dr);
++	}
++}
++
++/**
++ * add_node - add a node to the consolidated log.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to which to add
++ * @lnum: LEB number to which to write is passed and returned here
++ * @offs: offset to where to write is passed and returned here
++ * @node: node to add
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int add_node(struct ubifs_info *c, void *buf, int *lnum, int *offs,
++		    void *node)
++{
++	struct ubifs_ch *ch = node;
++	int len = le32_to_cpu(ch->len), remains = c->leb_size - *offs;
++
++	if (len > remains) {
++		int sz = ALIGN(*offs, c->min_io_size), err;
++
++		ubifs_pad(c, buf + *offs, sz - *offs);
++		err = ubi_leb_change(c->ubi, *lnum, buf, sz, UBI_SHORTTERM);
++		if (err)
++			return err;
++		*lnum = next_log_lnum(c, *lnum);
++		*offs = 0;
++	}
++	memcpy(buf + *offs, node, len);
++	*offs += ALIGN(len, 8);
++	return 0;
++}
++
++/**
++ * ubifs_consolidate_log - consolidate the log.
++ * @c: UBIFS file-system description object
++ *
++ * Repeated failed commits could cause the log to be full, but at least 1 LEB is
++ * needed for commit. This function rewrites the reference nodes in the log
++ * omitting duplicates, and failed CS nodes, and leaving no gaps.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_consolidate_log(struct ubifs_info *c)
++{
++	struct ubifs_scan_leb *sleb;
++	struct ubifs_scan_node *snod;
++	struct rb_root done_tree = RB_ROOT;
++	int lnum, err, first = 1, write_lnum, offs = 0;
++	void *buf;
++
++	dbg_rcvry("log tail LEB %d, log head LEB %d", c->ltail_lnum,
++		  c->lhead_lnum);
++	buf = vmalloc(c->leb_size);
++	if (!buf)
++		return -ENOMEM;
++	lnum = c->ltail_lnum;
++	write_lnum = lnum;
++	while (1) {
++		sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++		if (IS_ERR(sleb)) {
++			err = PTR_ERR(sleb);
++			goto out_free;
++		}
++		list_for_each_entry(snod, &sleb->nodes, list) {
++			switch (snod->type) {
++			case UBIFS_REF_NODE: {
++				struct ubifs_ref_node *ref = snod->node;
++				int ref_lnum = le32_to_cpu(ref->lnum);
++
++				err = done_already(&done_tree, ref_lnum);
++				if (err < 0)
++					goto out_scan;
++				if (err != 1) {
++					err = add_node(c, buf, &write_lnum,
++						       &offs, snod->node);
++					if (err)
++						goto out_scan;
++				}
++				break;
++			}
++			case UBIFS_CS_NODE:
++				if (!first)
++					break;
++				err = add_node(c, buf, &write_lnum, &offs,
++					       snod->node);
++				if (err)
++					goto out_scan;
++				first = 0;
++				break;
++			}
++		}
++		ubifs_scan_destroy(sleb);
++		if (lnum == c->lhead_lnum)
++			break;
++		lnum = next_log_lnum(c, lnum);
++	}
++	if (offs) {
++		int sz = ALIGN(offs, c->min_io_size);
++
++		ubifs_pad(c, buf + offs, sz - offs);
++		err = ubi_leb_change(c->ubi, write_lnum, buf, sz,
++				     UBI_SHORTTERM);
++		if (err)
++			goto out_free;
++		offs = ALIGN(offs, c->min_io_size);
++	}
++	destroy_done_tree(&done_tree);
++	vfree(buf);
++	if (write_lnum == c->lhead_lnum) {
++		ubifs_err("log is too full");
++		return -EINVAL;
++	}
++	/* Unmap remaining LEBs */
++	lnum = write_lnum;
++	do {
++		lnum = next_log_lnum(c, lnum);
++		err = ubifs_leb_unmap(c, lnum);
++		if (err)
++			return err;
++	} while (lnum != c->lhead_lnum);
++	c->lhead_lnum = write_lnum;
++	c->lhead_offs = offs;
++	dbg_rcvry("new log head at %d:%d", c->lhead_lnum, c->lhead_offs);
++	return 0;
++
++out_scan:
++	ubifs_scan_destroy(sleb);
++out_free:
++	destroy_done_tree(&done_tree);
++	vfree(buf);
++	return err;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * dbg_check_bud_bytes - make sure bud bytes calculation are all right.
++ * @c: UBIFS file-system description object
++ *
++ * This function makes sure the amount of flash space used by closed buds
++ * ('c->bud_bytes' is correct). Returns zero in case of success and %-EINVAL in
++ * case of failure.
++ */
++static int dbg_check_bud_bytes(struct ubifs_info *c)
++{
++	int i, err = 0;
++	struct ubifs_bud *bud;
++	long long bud_bytes = 0;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_GEN))
++		return 0;
++
++	spin_lock(&c->buds_lock);
++	for (i = 0; i < c->jhead_cnt; i++)
++		list_for_each_entry(bud, &c->jheads[i].buds_list, list)
++			bud_bytes += c->leb_size - bud->start;
++
++	if (c->bud_bytes != bud_bytes) {
++		ubifs_err("bad bud_bytes %lld, calculated %lld",
++			  c->bud_bytes, bud_bytes);
++		err = -EINVAL;
++	}
++	spin_unlock(&c->buds_lock);
++
++	return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/lprops.c avr32-2.6/fs/ubifs/lprops.c
+--- linux-2.6.25.6/fs/ubifs/lprops.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/lprops.c	2008-06-12 15:09:45.371816276 +0200
+@@ -0,0 +1,1355 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements the functions that access LEB properties and their
++ * categories. LEBs are categorized based on the needs of UBIFS, and the
++ * categories are stored as either heaps or lists to provide a fast way of
++ * finding a LEB in a particular category. For example, UBIFS may need to find
++ * an empty LEB for the journal, or a very dirty LEB for garbage collection.
++ */
++
++#include "ubifs.h"
++
++/**
++ * get_heap_comp_val - get the LEB properties value for heap comparisons.
++ * @lprops: LEB properties
++ * @cat: LEB category
++ */
++static int get_heap_comp_val(struct ubifs_lprops *lprops, int cat)
++{
++	switch (cat) {
++	case LPROPS_FREE:
++		return lprops->free;
++	case LPROPS_DIRTY_IDX:
++		return lprops->free + lprops->dirty;
++	default:
++		return lprops->dirty;
++	}
++}
++
++/**
++ * move_up_lpt_heap - move a new heap entry up as far as possible.
++ * @c: UBIFS file-system description object
++ * @heap: LEB category heap
++ * @lprops: LEB properties to move
++ * @cat: LEB category
++ *
++ * New entries to a heap are added at the bottom and then moved up until the
++ * parent's value is greater.  In the case of LPT's category heaps, the value
++ * is either the amount of free space or the amount of dirty space, depending
++ * on the category.
++ */
++static void move_up_lpt_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap,
++			     struct ubifs_lprops *lprops, int cat)
++{
++	int val1, val2, hpos;
++
++	hpos = lprops->hpos;
++	if (!hpos)
++		return; /* Already top of the heap */
++	val1 = get_heap_comp_val(lprops, cat);
++	/* Compare to parent and, if greater, move up the heap */
++	do {
++		int ppos = (hpos - 1) / 2;
++
++		val2 = get_heap_comp_val(heap->arr[ppos], cat);
++		if (val2 >= val1)
++			return;
++		/* Greater than parent so move up */
++		heap->arr[ppos]->hpos = hpos;
++		heap->arr[hpos] = heap->arr[ppos];
++		heap->arr[ppos] = lprops;
++		lprops->hpos = ppos;
++		hpos = ppos;
++	} while (hpos);
++}
++
++/**
++ * adjust_lpt_heap - move a changed heap entry up or down the heap.
++ * @c: UBIFS file-system description object
++ * @heap: LEB category heap
++ * @lprops: LEB properties to move
++ * @hpos: heap position of @lprops
++ * @cat: LEB category
++ *
++ * Changed entries in a heap are moved up or down until the parent's value is
++ * greater.  In the case of LPT's category heaps, the value is either the amount
++ * of free space or the amount of dirty space, depending on the category.
++ */
++static void adjust_lpt_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap,
++			    struct ubifs_lprops *lprops, int hpos, int cat)
++{
++	int val1, val2, val3, cpos;
++
++	val1 = get_heap_comp_val(lprops, cat);
++	/* Compare to parent and, if greater than parent, move up the heap */
++	if (hpos) {
++		int ppos = (hpos - 1) / 2;
++
++		val2 = get_heap_comp_val(heap->arr[ppos], cat);
++		if (val1 > val2) {
++			/* Greater than parent so move up */
++			while (1) {
++				heap->arr[ppos]->hpos = hpos;
++				heap->arr[hpos] = heap->arr[ppos];
++				heap->arr[ppos] = lprops;
++				lprops->hpos = ppos;
++				hpos = ppos;
++				if (!hpos)
++					return;
++				ppos = (hpos - 1) / 2;
++				val2 = get_heap_comp_val(heap->arr[ppos], cat);
++				if (val1 <= val2)
++					return;
++				/* Still greater than parent so keep going */
++			}
++		}
++	}
++	/* Not greater than parent, so compare to children */
++	while (1) {
++		/* Compare to left child */
++		cpos = hpos * 2 + 1;
++		if (cpos >= heap->cnt)
++			return;
++		val2 = get_heap_comp_val(heap->arr[cpos], cat);
++		if (val1 < val2) {
++			/* Less than left child, so promote biggest child */
++			if (cpos + 1 < heap->cnt) {
++				val3 = get_heap_comp_val(heap->arr[cpos + 1],
++							 cat);
++				if (val3 > val2)
++					cpos += 1; /* Right child is bigger */
++			}
++			heap->arr[cpos]->hpos = hpos;
++			heap->arr[hpos] = heap->arr[cpos];
++			heap->arr[cpos] = lprops;
++			lprops->hpos = cpos;
++			hpos = cpos;
++			continue;
++		}
++		/* Compare to right child */
++		cpos += 1;
++		if (cpos >= heap->cnt)
++			return;
++		val3 = get_heap_comp_val(heap->arr[cpos], cat);
++		if (val1 < val3) {
++			/* Less than right child, so promote right child */
++			heap->arr[cpos]->hpos = hpos;
++			heap->arr[hpos] = heap->arr[cpos];
++			heap->arr[cpos] = lprops;
++			lprops->hpos = cpos;
++			hpos = cpos;
++			continue;
++		}
++		return;
++	}
++}
++
++/**
++ * add_to_lpt_heap - add LEB properties to a LEB category heap.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to add
++ * @cat: LEB category
++ *
++ * This function returns %1 if @lprops is added to the heap for LEB category
++ * @cat, otherwise %0 is returned because the heap is full.
++ */
++static int add_to_lpt_heap(struct ubifs_info *c, struct ubifs_lprops *lprops,
++			   int cat)
++{
++	struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1];
++
++	if (heap->cnt >= heap->max_cnt) {
++		const int b = LPT_HEAP_SZ / 2 - 1;
++		int cpos, val1, val2;
++
++		/* Compare to some other LEB on the bottom of heap */
++		/* Pick a position kind of randomly */
++		cpos = (((size_t)lprops >> 4) & b) + b;
++		ubifs_assert(cpos >= b);
++		ubifs_assert(cpos < LPT_HEAP_SZ);
++		ubifs_assert(cpos < heap->cnt);
++
++		val1 = get_heap_comp_val(lprops, cat);
++		val2 = get_heap_comp_val(heap->arr[cpos], cat);
++		if (val1 > val2) {
++			struct ubifs_lprops *lp;
++
++			lp = heap->arr[cpos];
++			lp->flags &= ~LPROPS_CAT_MASK;
++			lp->flags |= LPROPS_UNCAT;
++			list_add(&lp->list, &c->uncat_list);
++			lprops->hpos = cpos;
++			heap->arr[cpos] = lprops;
++			move_up_lpt_heap(c, heap, lprops, cat);
++			dbg_check_heap(c, heap, cat, lprops->hpos);
++			return 1; /* Added to heap */
++		}
++		dbg_check_heap(c, heap, cat, -1);
++		return 0; /* Not added to heap */
++	} else {
++		lprops->hpos = heap->cnt++;
++		heap->arr[lprops->hpos] = lprops;
++		move_up_lpt_heap(c, heap, lprops, cat);
++		dbg_check_heap(c, heap, cat, lprops->hpos);
++		return 1; /* Added to heap */
++	}
++}
++
++/**
++ * remove_from_lpt_heap - remove LEB properties from a LEB category heap.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to remove
++ * @cat: LEB category
++ */
++static void remove_from_lpt_heap(struct ubifs_info *c,
++				 struct ubifs_lprops *lprops, int cat)
++{
++	struct ubifs_lpt_heap *heap;
++	int hpos = lprops->hpos;
++
++	heap = &c->lpt_heap[cat - 1];
++	ubifs_assert(hpos >= 0 && hpos < heap->cnt);
++	ubifs_assert(heap->arr[hpos] == lprops);
++	heap->cnt -= 1;
++	if (hpos < heap->cnt) {
++		heap->arr[hpos] = heap->arr[heap->cnt];
++		heap->arr[hpos]->hpos = hpos;
++		adjust_lpt_heap(c, heap, heap->arr[hpos], hpos, cat);
++	}
++	dbg_check_heap(c, heap, cat, -1);
++}
++
++/**
++ * lpt_heap_replace - replace lprops in a category heap.
++ * @c: UBIFS file-system description object
++ * @old_lprops: LEB properties to replace
++ * @new_lprops: LEB properties with which to replace
++ * @cat: LEB category
++ *
++ * During commit it is sometimes necessary to copy a pnode (see dirty_cow_pnode)
++ * and the lprops that the pnode contains.  When that happens, references in
++ * the category heaps to those lprops must be updated to point to the new
++ * lprops.  This function does that.
++ */
++static void lpt_heap_replace(struct ubifs_info *c,
++			     struct ubifs_lprops *old_lprops,
++			     struct ubifs_lprops *new_lprops, int cat)
++{
++	struct ubifs_lpt_heap *heap;
++	int hpos = new_lprops->hpos;
++
++	heap = &c->lpt_heap[cat - 1];
++	heap->arr[hpos] = new_lprops;
++}
++
++/**
++ * ubifs_add_to_cat - add LEB properties to a category list or heap.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to add
++ * @cat: LEB category to which to add
++ *
++ * LEB properties are categorized to enable fast find operations.
++ */
++void ubifs_add_to_cat(struct ubifs_info *c, struct ubifs_lprops *lprops,
++		      int cat)
++{
++	switch (cat) {
++	case LPROPS_DIRTY:
++	case LPROPS_DIRTY_IDX:
++	case LPROPS_FREE:
++		if (add_to_lpt_heap(c, lprops, cat))
++			break;
++		/* No more room on heap so make it uncategorized */
++		cat = LPROPS_UNCAT;
++		/* Fall through */
++	case LPROPS_UNCAT:
++		list_add(&lprops->list, &c->uncat_list);
++		break;
++	case LPROPS_EMPTY:
++		list_add(&lprops->list, &c->empty_list);
++		break;
++	case LPROPS_FREEABLE:
++		list_add(&lprops->list, &c->freeable_list);
++		c->freeable_cnt += 1;
++		break;
++	case LPROPS_FRDI_IDX:
++		list_add(&lprops->list, &c->frdi_idx_list);
++		break;
++	default:
++		ubifs_assert(0);
++	}
++	lprops->flags &= ~LPROPS_CAT_MASK;
++	lprops->flags |= cat;
++}
++
++/**
++ * ubifs_remove_from_cat - remove LEB properties from a category list or heap.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to remove
++ * @cat: LEB category from which to remove
++ *
++ * LEB properties are categorized to enable fast find operations.
++ */
++static void ubifs_remove_from_cat(struct ubifs_info *c,
++				  struct ubifs_lprops *lprops, int cat)
++{
++	switch (cat) {
++	case LPROPS_DIRTY:
++	case LPROPS_DIRTY_IDX:
++	case LPROPS_FREE:
++		remove_from_lpt_heap(c, lprops, cat);
++		break;
++	case LPROPS_FREEABLE:
++		c->freeable_cnt -= 1;
++		ubifs_assert(c->freeable_cnt >= 0);
++		/* Fall through */
++	case LPROPS_UNCAT:
++	case LPROPS_EMPTY:
++	case LPROPS_FRDI_IDX:
++		ubifs_assert(!list_empty(&lprops->list));
++		list_del(&lprops->list);
++		break;
++	default:
++		ubifs_assert(0);
++	}
++}
++
++/**
++ * ubifs_replace_cat - replace lprops in a category list or heap.
++ * @c: UBIFS file-system description object
++ * @old_lprops: LEB properties to replace
++ * @new_lprops: LEB properties with which to replace
++ *
++ * During commit it is sometimes necessary to copy a pnode (see dirty_cow_pnode)
++ * and the lprops that the pnode contains. When that happens, references in
++ * category lists and heaps must be replaced. This function does that.
++ */
++void ubifs_replace_cat(struct ubifs_info *c, struct ubifs_lprops *old_lprops,
++		       struct ubifs_lprops *new_lprops)
++{
++	int cat;
++
++	cat = new_lprops->flags & LPROPS_CAT_MASK;
++	switch (cat) {
++	case LPROPS_DIRTY:
++	case LPROPS_DIRTY_IDX:
++	case LPROPS_FREE:
++		lpt_heap_replace(c, old_lprops, new_lprops, cat);
++		break;
++	case LPROPS_UNCAT:
++	case LPROPS_EMPTY:
++	case LPROPS_FREEABLE:
++	case LPROPS_FRDI_IDX:
++		list_replace(&old_lprops->list, &new_lprops->list);
++		break;
++	default:
++		ubifs_assert(0);
++	}
++}
++
++/**
++ * ubifs_ensure_cat - ensure LEB properties are categorized.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties
++ *
++ * A LEB may have fallen off of the bottom of a heap, and ended up as
++ * uncategorized even though it has enough space for us now. If that is the case
++ * this function will put the LEB back onto a heap.
++ */
++void ubifs_ensure_cat(struct ubifs_info *c, struct ubifs_lprops *lprops)
++{
++	int cat = lprops->flags & LPROPS_CAT_MASK;
++
++	if (cat != LPROPS_UNCAT)
++		return;
++	cat = ubifs_categorize_lprops(c, lprops);
++	if (cat == LPROPS_UNCAT)
++		return;
++	ubifs_remove_from_cat(c, lprops, LPROPS_UNCAT);
++	ubifs_add_to_cat(c, lprops, cat);
++}
++
++/**
++ * ubifs_categorize_lprops - categorize LEB properties.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to categorize
++ *
++ * LEB properties are categorized to enable fast find operations. This function
++ * returns the LEB category to which the LEB properties belong. Note however
++ * that if the LEB category is stored as a heap and the heap is full, the
++ * LEB properties may have their category changed to %LPROPS_UNCAT.
++ */
++int ubifs_categorize_lprops(const struct ubifs_info *c,
++			    const struct ubifs_lprops *lprops)
++{
++	if (lprops->flags & LPROPS_TAKEN)
++		return LPROPS_UNCAT;
++
++	if (lprops->free == c->leb_size) {
++		ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++		return LPROPS_EMPTY;
++	}
++
++	if (lprops->free + lprops->dirty == c->leb_size) {
++		if (lprops->flags & LPROPS_INDEX)
++			return LPROPS_FRDI_IDX;
++		else
++			return LPROPS_FREEABLE;
++	}
++
++	if (lprops->flags & LPROPS_INDEX) {
++		if (lprops->dirty + lprops->free >= c->min_idx_node_sz)
++			return LPROPS_DIRTY_IDX;
++	} else {
++		if (lprops->dirty >= c->dead_wm &&
++		    lprops->dirty > lprops->free)
++			return LPROPS_DIRTY;
++		if (lprops->free > 0)
++			return LPROPS_FREE;
++	}
++
++	return LPROPS_UNCAT;
++}
++
++/**
++ * change_category - change LEB properties category.
++ * @c: UBIFS file-system description object
++ * @lprops: LEB properties to recategorize
++ *
++ * LEB properties are categorized to enable fast find operations. When the LEB
++ * properties change they must be recategorized.
++ */
++static void change_category(struct ubifs_info *c, struct ubifs_lprops *lprops)
++{
++	int old_cat = lprops->flags & LPROPS_CAT_MASK;
++	int new_cat = ubifs_categorize_lprops(c, lprops);
++
++	if (old_cat == new_cat) {
++		struct ubifs_lpt_heap *heap = &c->lpt_heap[new_cat - 1];
++
++		/* lprops on a heap now must be moved up or down */
++		if (new_cat < 1 || new_cat > LPROPS_HEAP_CNT)
++			return; /* Not on a heap */
++		heap = &c->lpt_heap[new_cat - 1];
++		adjust_lpt_heap(c, heap, lprops, lprops->hpos, new_cat);
++	} else {
++		ubifs_remove_from_cat(c, lprops, old_cat);
++		ubifs_add_to_cat(c, lprops, new_cat);
++	}
++}
++
++/**
++ * ubifs_get_lprops - get reference to LEB properties.
++ * @c: the UBIFS file-system description object
++ *
++ * This function locks lprops. Lprops have to be unlocked by
++ * 'ubifs_release_lprops()'.
++ */
++void ubifs_get_lprops(struct ubifs_info *c)
++{
++	mutex_lock(&c->lp_mutex);
++}
++
++/**
++ * calc_dark - calculate LEB dark space size.
++ * @c: the UBIFS file-system description object
++ * @spc: amount of free and dirty space in the LEB
++ *
++ * This function calculates amount of dark space in an LEB which has @spc bytes
++ * of free and dirty space. Returns the calculations result.
++ *
++ * Dark space is the space which is not always usable - it depends on which
++ * nodes are written in which order. E.g., if an LEB has only 512 free bytes,
++ * it is dark space, because it cannot fit a large data node. So UBIFS cannot
++ * count on this LEB and treat these 512 bytes as usable because it is not true
++ * if, for example, only big chunks of uncompressible data will be written to
++ * the FS.
++ */
++static int calc_dark(struct ubifs_info *c, int spc)
++{
++	ubifs_assert(!(spc & 7));
++
++	if (spc < c->dark_wm)
++		return spc;
++
++	/*
++	 * If we have slightly more space then the dark space watermark, we can
++	 * anyway safely assume it we'll be able to write a node of the
++	 * smallest size there.
++	 */
++	if (spc - c->dark_wm < MIN_WRITE_SZ)
++		return spc - MIN_WRITE_SZ;
++
++	return c->dark_wm;
++}
++
++/**
++ * is_lprops_dirty - determine if LEB properties are dirty.
++ * @c: the UBIFS file-system description object
++ * @lprops: LEB properties to test
++ */
++static int is_lprops_dirty(struct ubifs_info *c, struct ubifs_lprops *lprops)
++{
++	struct ubifs_pnode *pnode;
++	int pos;
++
++	pos = (lprops->lnum - c->main_first) & (UBIFS_LPT_FANOUT - 1);
++	pnode = (struct ubifs_pnode *)container_of(lprops - pos,
++						   struct ubifs_pnode,
++						   lprops[0]);
++	return !test_bit(COW_ZNODE, &pnode->flags) &&
++	       test_bit(DIRTY_CNODE, &pnode->flags);
++}
++
++/**
++ * ubifs_change_lp - change LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lp: LEB properties to change
++ * @free: new free space amount
++ * @dirty: new dirty space amount
++ * @flags: new flags
++ * @idx_gc_cnt: change to the count of idx_gc list
++ *
++ * This function changes LEB properties. This function does not change a LEB
++ * property (@free, @dirty or @flag) if the value passed is %LPROPS_NC.
++ *
++ * This function returns a pointer to the updated LEB properties on success
++ * and a negative error code on failure. N.B. the LEB properties may have had to
++ * be copied (due to COW) and consequently the pointer returned may not be the
++ * same as the pointer passed.
++ */
++const struct ubifs_lprops *ubifs_change_lp(struct ubifs_info *c,
++					   const struct ubifs_lprops *lp,
++					   int free, int dirty, int flags,
++					   int idx_gc_cnt)
++{
++	/*
++	 * This is the only function that is allowed to change lprops, so we
++	 * discard the const qualifier.
++	 */
++	struct ubifs_lprops *lprops = (struct ubifs_lprops *)lp;
++
++	dbg_lp("LEB %d, free %d, dirty %d, flags %d",
++	       lprops->lnum, free, dirty, flags);
++
++	ubifs_assert(mutex_is_locked(&c->lp_mutex));
++	ubifs_assert(c->lst.empty_lebs >= 0 &&
++		     c->lst.empty_lebs <= c->main_lebs);
++	ubifs_assert(c->freeable_cnt >= 0);
++	ubifs_assert(c->freeable_cnt <= c->main_lebs);
++	ubifs_assert(c->lst.taken_empty_lebs >= 0);
++	ubifs_assert(c->lst.taken_empty_lebs <= c->lst.empty_lebs);
++	ubifs_assert(!(c->lst.total_free & 7) && !(c->lst.total_dirty & 7));
++	ubifs_assert(!(c->lst.total_dead & 7) && !(c->lst.total_dark & 7));
++	ubifs_assert(!(c->lst.total_used & 7));
++	ubifs_assert(free == LPROPS_NC || free >= 0);
++	ubifs_assert(dirty == LPROPS_NC || dirty >= 0);
++
++	if (!is_lprops_dirty(c, lprops)) {
++		lprops = ubifs_lpt_lookup_dirty(c, lprops->lnum);
++		if (IS_ERR(lprops))
++			return lprops;
++	} else
++		ubifs_assert(lprops == ubifs_lpt_lookup_dirty(c, lprops->lnum));
++
++	ubifs_assert(!(lprops->free & 7) && !(lprops->dirty & 7));
++
++	spin_lock(&c->space_lock);
++
++	if ((lprops->flags & LPROPS_TAKEN) && lprops->free == c->leb_size)
++		c->lst.taken_empty_lebs -= 1;
++
++	if (!(lprops->flags & LPROPS_INDEX)) {
++		int old_spc;
++
++		old_spc = lprops->free + lprops->dirty;
++		if (old_spc < c->dead_wm)
++			c->lst.total_dead -= old_spc;
++		else
++			c->lst.total_dark -= calc_dark(c, old_spc);
++
++		c->lst.total_used -= c->leb_size - old_spc;
++	}
++
++	if (free != LPROPS_NC) {
++		free = ALIGN(free, 8);
++		c->lst.total_free += free - lprops->free;
++
++		/* Increase or decrease empty LEBs counter if needed */
++		if (free == c->leb_size) {
++			if (lprops->free != c->leb_size)
++				c->lst.empty_lebs += 1;
++		} else if (lprops->free == c->leb_size)
++			c->lst.empty_lebs -= 1;
++		lprops->free = free;
++	}
++
++	if (dirty != LPROPS_NC) {
++		dirty = ALIGN(dirty, 8);
++		c->lst.total_dirty += dirty - lprops->dirty;
++		lprops->dirty = dirty;
++	}
++
++	if (flags != LPROPS_NC) {
++		/* Take care about indexing LEBs counter if needed */
++		if ((lprops->flags & LPROPS_INDEX)) {
++			if (!(flags & LPROPS_INDEX))
++				c->lst.idx_lebs -= 1;
++		} else if (flags & LPROPS_INDEX)
++			c->lst.idx_lebs += 1;
++		lprops->flags = flags;
++	}
++
++	if (!(lprops->flags & LPROPS_INDEX)) {
++		int new_spc;
++
++		new_spc = lprops->free + lprops->dirty;
++		if (new_spc < c->dead_wm)
++			c->lst.total_dead += new_spc;
++		else
++			c->lst.total_dark += calc_dark(c, new_spc);
++
++		c->lst.total_used += c->leb_size - new_spc;
++	}
++
++	if ((lprops->flags & LPROPS_TAKEN) && lprops->free == c->leb_size)
++		c->lst.taken_empty_lebs += 1;
++
++	change_category(c, lprops);
++
++	c->idx_gc_cnt += idx_gc_cnt;
++
++	spin_unlock(&c->space_lock);
++
++	return lprops;
++}
++
++/**
++ * ubifs_release_lprops - release lprops lock.
++ * @c: the UBIFS file-system description object
++ *
++ * This function has to be called after each 'ubifs_get_lprops()' call to
++ * unlock lprops.
++ */
++void ubifs_release_lprops(struct ubifs_info *c)
++{
++	ubifs_assert(mutex_is_locked(&c->lp_mutex));
++	ubifs_assert(c->lst.empty_lebs >= 0 &&
++		     c->lst.empty_lebs <= c->main_lebs);
++
++	mutex_unlock(&c->lp_mutex);
++}
++
++/**
++ * ubifs_get_lp_stats - get lprops statistics.
++ * @c: UBIFS file-system description object
++ * @st: return statistics
++ */
++void ubifs_get_lp_stats(struct ubifs_info *c, struct ubifs_lp_stats *st)
++{
++	spin_lock(&c->space_lock);
++	memcpy(st, &c->lst, sizeof(struct ubifs_lp_stats));
++	spin_unlock(&c->space_lock);
++}
++
++/**
++ * ubifs_change_one_lp - change LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to change properties for
++ * @free: amount of free space
++ * @dirty: amount of dirty space
++ * @flags_set: flags to set
++ * @flags_clean: flags to clean
++ * @idx_gc_cnt: change to the count of idx_gc list
++ *
++ * This function changes properties of LEB @lnum. It is a helper wrapper over
++ * 'ubifs_change_lp()' which hides lprops get/release. The arguments are the
++ * same as in case of 'ubifs_change_lp()'. Returns zero in case of success and
++ * a negative error code in case of failure.
++ */
++int ubifs_change_one_lp(struct ubifs_info *c, int lnum, int free, int dirty,
++			int flags_set, int flags_clean, int idx_gc_cnt)
++{
++	int err = 0, flags;
++	const struct ubifs_lprops *lp;
++
++	ubifs_get_lprops(c);
++
++	lp = ubifs_lpt_lookup_dirty(c, lnum);
++	if (IS_ERR(lp)) {
++		err = PTR_ERR(lp);
++		goto out;
++	}
++
++	flags = (lp->flags | flags_set) & ~flags_clean;
++	lp = ubifs_change_lp(c, lp, free, dirty, flags, idx_gc_cnt);
++	if (IS_ERR(lp))
++		err = PTR_ERR(lp);
++
++out:
++	ubifs_release_lprops(c);
++	return err;
++}
++
++/**
++ * ubifs_update_one_lp - update LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to change properties for
++ * @free: amount of free space
++ * @dirty: amount of dirty space to add
++ * @flags_set: flags to set
++ * @flags_clean: flags to clean
++ *
++ * This function is the same as 'ubifs_change_one_lp()' but @dirty is added to
++ * current dirty space, not substitutes it.
++ */
++int ubifs_update_one_lp(struct ubifs_info *c, int lnum, int free, int dirty,
++			int flags_set, int flags_clean)
++{
++	int err = 0, flags;
++	const struct ubifs_lprops *lp;
++
++	ubifs_get_lprops(c);
++
++	lp = ubifs_lpt_lookup_dirty(c, lnum);
++	if (IS_ERR(lp)) {
++		err = PTR_ERR(lp);
++		goto out;
++	}
++
++	flags = (lp->flags | flags_set) & ~flags_clean;
++	lp = ubifs_change_lp(c, lp, free, lp->dirty + dirty, flags, 0);
++	if (IS_ERR(lp))
++		err = PTR_ERR(lp);
++
++out:
++	ubifs_release_lprops(c);
++	return err;
++}
++
++/**
++ * ubifs_read_one_lp - read LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to read properties for
++ * @lp: where to store read properties
++ *
++ * This helper function reads properties of a LEB @lnum and stores them in @lp.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++int ubifs_read_one_lp(struct ubifs_info *c, int lnum, struct ubifs_lprops *lp)
++{
++	int err = 0;
++	const struct ubifs_lprops *lpp;
++
++	ubifs_get_lprops(c);
++
++	lpp = ubifs_lpt_lookup(c, lnum);
++	if (IS_ERR(lpp)) {
++		err = PTR_ERR(lpp);
++		goto out;
++	}
++
++	memcpy(lp, lpp, sizeof(struct ubifs_lprops));
++
++out:
++	ubifs_release_lprops(c);
++	return err;
++}
++
++/**
++ * ubifs_fast_find_free - try to find a LEB with free space quickly.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB properties for a LEB with free space or %NULL if
++ * the function is unable to find a LEB quickly.
++ */
++const struct ubifs_lprops *ubifs_fast_find_free(struct ubifs_info *c)
++{
++	struct ubifs_lprops *lprops;
++	struct ubifs_lpt_heap *heap;
++
++	ubifs_assert(mutex_is_locked(&c->lp_mutex));
++
++	heap = &c->lpt_heap[LPROPS_FREE - 1];
++	if (heap->cnt == 0)
++		return NULL;
++
++	lprops = heap->arr[0];
++	ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++	ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++	return lprops;
++}
++
++/**
++ * ubifs_fast_find_empty - try to find an empty LEB quickly.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB properties for an empty LEB or %NULL if the
++ * function is unable to find an empty LEB quickly.
++ */
++const struct ubifs_lprops *ubifs_fast_find_empty(struct ubifs_info *c)
++{
++	struct ubifs_lprops *lprops;
++
++	ubifs_assert(mutex_is_locked(&c->lp_mutex));
++
++	if (list_empty(&c->empty_list))
++		return NULL;
++
++	lprops = list_entry(c->empty_list.next, struct ubifs_lprops, list);
++	ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++	ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++	ubifs_assert(lprops->free == c->leb_size);
++	return lprops;
++}
++
++/**
++ * ubifs_fast_find_freeable - try to find a freeable LEB quickly.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB properties for a freeable LEB or %NULL if the
++ * function is unable to find a freeable LEB quickly.
++ */
++const struct ubifs_lprops *ubifs_fast_find_freeable(struct ubifs_info *c)
++{
++	struct ubifs_lprops *lprops;
++
++	ubifs_assert(mutex_is_locked(&c->lp_mutex));
++
++	if (list_empty(&c->freeable_list))
++		return NULL;
++
++	lprops = list_entry(c->freeable_list.next, struct ubifs_lprops, list);
++	ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++	ubifs_assert(!(lprops->flags & LPROPS_INDEX));
++	ubifs_assert(lprops->free + lprops->dirty == c->leb_size);
++	ubifs_assert(c->freeable_cnt > 0);
++	return lprops;
++}
++
++/**
++ * ubifs_fast_find_frdi_idx - try to find a freeable index LEB quickly.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns LEB properties for a freeable index LEB or %NULL if the
++ * function is unable to find a freeable index LEB quickly.
++ */
++const struct ubifs_lprops *ubifs_fast_find_frdi_idx(struct ubifs_info *c)
++{
++	struct ubifs_lprops *lprops;
++
++	ubifs_assert(mutex_is_locked(&c->lp_mutex));
++
++	if (list_empty(&c->frdi_idx_list))
++		return NULL;
++
++	lprops = list_entry(c->frdi_idx_list.next, struct ubifs_lprops, list);
++	ubifs_assert(!(lprops->flags & LPROPS_TAKEN));
++	ubifs_assert((lprops->flags & LPROPS_INDEX));
++	ubifs_assert(lprops->free + lprops->dirty == c->leb_size);
++	return lprops;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * dbg_check_cats - check category heaps and lists.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_check_cats(struct ubifs_info *c)
++{
++	struct ubifs_lprops *lprops;
++	struct list_head *pos;
++	int i, cat;
++
++	if (!(ubifs_chk_flags & (UBIFS_CHK_GEN | UBIFS_CHK_LPROPS)))
++		return 0;
++
++	list_for_each_entry(lprops, &c->empty_list, list) {
++		if (lprops->free != c->leb_size) {
++			ubifs_err("non-empty LEB %d on empty list "
++				  "(free %d dirty %d flags %d)", lprops->lnum,
++				  lprops->free, lprops->dirty, lprops->flags);
++			return -EINVAL;
++		}
++		if (lprops->flags & LPROPS_TAKEN) {
++			ubifs_err("taken LEB %d on empty list "
++				  "(free %d dirty %d flags %d)", lprops->lnum,
++				  lprops->free, lprops->dirty, lprops->flags);
++			return -EINVAL;
++		}
++	}
++
++	i = 0;
++	list_for_each_entry(lprops, &c->freeable_list, list) {
++		if (lprops->free + lprops->dirty != c->leb_size) {
++			ubifs_err("non-freeable LEB %d on freeable list "
++				  "(free %d dirty %d flags %d)", lprops->lnum,
++				  lprops->free, lprops->dirty, lprops->flags);
++			return -EINVAL;
++		}
++		if (lprops->flags & LPROPS_TAKEN) {
++			ubifs_err("taken LEB %d on freeable list "
++				  "(free %d dirty %d flags %d)", lprops->lnum,
++				  lprops->free, lprops->dirty, lprops->flags);
++			return -EINVAL;
++		}
++		i += 1;
++	}
++	if (i != c->freeable_cnt) {
++		ubifs_err("freeable list count %d expected %d", i,
++			  c->freeable_cnt);
++		return -EINVAL;
++	}
++
++	i = 0;
++	list_for_each(pos, &c->idx_gc)
++		i += 1;
++	if (i != c->idx_gc_cnt) {
++		ubifs_err("idx_gc list count %d expected %d", i,
++			  c->idx_gc_cnt);
++		return -EINVAL;
++	}
++
++	list_for_each_entry(lprops, &c->frdi_idx_list, list) {
++		if (lprops->free + lprops->dirty != c->leb_size) {
++			ubifs_err("non-freeable LEB %d on frdi_idx list "
++				  "(free %d dirty %d flags %d)", lprops->lnum,
++				  lprops->free, lprops->dirty, lprops->flags);
++			return -EINVAL;
++		}
++		if (lprops->flags & LPROPS_TAKEN) {
++			ubifs_err("taken LEB %d on frdi_idx list "
++				  "(free %d dirty %d flags %d)", lprops->lnum,
++				  lprops->free, lprops->dirty, lprops->flags);
++			return -EINVAL;
++		}
++		if (!(lprops->flags & LPROPS_INDEX)) {
++			ubifs_err("non-index LEB %d on frdi_idx list "
++				  "(free %d dirty %d flags %d)", lprops->lnum,
++				  lprops->free, lprops->dirty, lprops->flags);
++			return -EINVAL;
++		}
++	}
++
++	for (cat = 1; cat <= LPROPS_HEAP_CNT; cat++) {
++		struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1];
++
++		for (i = 0; i < heap->cnt; i++) {
++			lprops = heap->arr[i];
++			if (!lprops) {
++				ubifs_err("null ptr in LPT heap cat %d", cat);
++				return -EINVAL;
++			}
++			if (lprops->hpos != i) {
++				ubifs_err("bad ptr in LPT heap cat %d", cat);
++				return -EINVAL;
++			}
++			if (lprops->flags & LPROPS_TAKEN) {
++				ubifs_err("taken LEB in LPT heap cat %d", cat);
++				return -EINVAL;
++			}
++		}
++	}
++
++	return 0;
++}
++
++void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat,
++		    int add_pos)
++{
++	int i = 0, j, err = 0;
++
++	if (!(ubifs_chk_flags & (UBIFS_CHK_GEN | UBIFS_CHK_LPROPS)))
++		return;
++
++	for (i = 0; i < heap->cnt; i++) {
++		struct ubifs_lprops *lprops = heap->arr[i];
++		struct ubifs_lprops *lp;
++
++		if (i != add_pos)
++			if ((lprops->flags & LPROPS_CAT_MASK) != cat) {
++				err = 1;
++				goto out;
++			}
++		if (lprops->hpos != i) {
++			err = 2;
++			goto out;
++		}
++		lp = ubifs_lpt_lookup(c, lprops->lnum);
++		if (IS_ERR(lp)) {
++			err = 3;
++			goto out;
++		}
++		if (lprops != lp) {
++			dbg_msg("lprops %zx lp %zx lprops->lnum %d lp->lnum %d",
++				(size_t)lprops, (size_t)lp, lprops->lnum,
++				lp->lnum);
++			err = 4;
++			goto out;
++		}
++		for (j = 0; j < i; j++) {
++			lp = heap->arr[j];
++			if (lp == lprops) {
++				err = 5;
++				goto out;
++			}
++			if (lp->lnum == lprops->lnum) {
++				err = 6;
++				goto out;
++			}
++		}
++	}
++out:
++	if (err) {
++		dbg_msg("failed cat %d hpos %d err %d", cat, i, err);
++		dbg_dump_stack();
++		dbg_dump_heap(c, heap, cat);
++	}
++}
++
++/**
++ * struct scan_check_data - data provided to scan callback function.
++ * @lst: LEB properties statistics
++ * @err: error code
++ */
++struct scan_check_data {
++	struct ubifs_lp_stats lst;
++	int err;
++};
++
++/**
++ * scan_check_cb - scan callback.
++ * @c: the UBIFS file-system description object
++ * @lp: LEB properties to scan
++ * @in_tree: whether the LEB properties are in main memory
++ * @data: information passed to and from the caller of the scan
++ *
++ * This function returns a code that indicates whether the scan should continue
++ * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree
++ * in main memory (%LPT_SCAN_ADD), or whether the scan should stop
++ * (%LPT_SCAN_STOP).
++ */
++static int scan_check_cb(struct ubifs_info *c,
++			 const struct ubifs_lprops *lp, int in_tree,
++			 struct scan_check_data *data)
++{
++	struct ubifs_scan_leb *sleb;
++	struct ubifs_scan_node *snod;
++	struct ubifs_lp_stats *lst = &data->lst;
++	int cat, lnum = lp->lnum, is_idx = 0, used = 0, free, dirty;
++
++	cat = lp->flags & LPROPS_CAT_MASK;
++	if (cat != LPROPS_UNCAT) {
++		cat = ubifs_categorize_lprops(c, lp);
++		if (cat != (lp->flags & LPROPS_CAT_MASK)) {
++			ubifs_err("bad LEB category %d expected %d",
++				  (lp->flags & LPROPS_CAT_MASK), cat);
++			goto out;
++		}
++	}
++
++	/* Check lp is on its category list (if it has one) */
++	if (in_tree) {
++		struct list_head *list = NULL;
++
++		switch (cat) {
++		case LPROPS_EMPTY:
++			list = &c->empty_list;
++			break;
++		case LPROPS_FREEABLE:
++			list = &c->freeable_list;
++			break;
++		case LPROPS_FRDI_IDX:
++			list = &c->frdi_idx_list;
++			break;
++		case LPROPS_UNCAT:
++			list = &c->uncat_list;
++			break;
++		}
++		if (list) {
++			struct ubifs_lprops *lprops;
++			int found = 0;
++
++			list_for_each_entry(lprops, list, list) {
++				if (lprops == lp) {
++					found = 1;
++					break;
++				}
++			}
++			if (!found) {
++				ubifs_err("bad LPT list (category %d)", cat);
++				goto out;
++			}
++		}
++	}
++
++	/* Check lp is on its category heap (if it has one) */
++	if (in_tree && cat > 0 && cat <= LPROPS_HEAP_CNT) {
++		struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1];
++
++		if ((lp->hpos != -1 && heap->arr[lp->hpos]->lnum != lnum) ||
++		    lp != heap->arr[lp->hpos]) {
++			ubifs_err("bad LPT heap (category %d)", cat);
++			goto out;
++		}
++	}
++
++	sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
++	if (IS_ERR(sleb)) {
++		/*
++		 * After an unclean unmount, empty and freeable LEBs
++		 * may contain garbage.
++		 */
++		if (lp->free == c->leb_size) {
++			ubifs_err("scan errors were in empty LEB "
++				  "- continuing checking");
++			lst->empty_lebs += 1;
++			lst->total_free += c->leb_size;
++			lst->total_dark += calc_dark(c, c->leb_size);
++			return LPT_SCAN_CONTINUE;
++		}
++
++		if (lp->free + lp->dirty == c->leb_size &&
++		    !(lp->flags & LPROPS_INDEX)) {
++			ubifs_err("scan errors were in freeable LEB "
++				  "- continuing checking");
++			lst->total_free  += lp->free;
++			lst->total_dirty += lp->dirty;
++			lst->total_dark  +=  calc_dark(c, c->leb_size);
++			return LPT_SCAN_CONTINUE;
++		}
++		data->err = PTR_ERR(sleb);
++		return LPT_SCAN_STOP;
++	}
++
++	is_idx = -1;
++	list_for_each_entry(snod, &sleb->nodes, list) {
++		int found, level = 0;
++
++		cond_resched();
++
++		if (is_idx == -1)
++			is_idx = (snod->type == UBIFS_IDX_NODE) ? 1 : 0;
++
++		if (is_idx && snod->type != UBIFS_IDX_NODE) {
++			ubifs_err("indexing node in data LEB %d:%d",
++				  lnum, snod->offs);
++			goto out_destroy;
++		}
++
++		if (snod->type == UBIFS_IDX_NODE) {
++			struct ubifs_idx_node *idx = snod->node;
++
++			key_read(c, ubifs_idx_key(c, idx), &snod->key);
++			level = le16_to_cpu(idx->level);
++		}
++
++		found = ubifs_tnc_has_node(c, &snod->key, level, lnum,
++					   snod->offs, is_idx);
++		if (found) {
++			if (found < 0)
++				goto out_destroy;
++			used += ALIGN(snod->len, 8);
++		}
++	}
++
++	free = c->leb_size - sleb->endpt;
++	dirty = sleb->endpt - used;
++
++	if (free > c->leb_size || free < 0 || dirty > c->leb_size ||
++	    dirty < 0) {
++		ubifs_err("bad calculated accounting for LEB %d: "
++			  "free %d, dirty %d", lnum, free, dirty);
++		goto out_destroy;
++	}
++
++	if (lp->free + lp->dirty == c->leb_size &&
++	    free + dirty == c->leb_size)
++		if ((is_idx && !(lp->flags & LPROPS_INDEX)) ||
++		    (!is_idx && free == c->leb_size)) {
++			/*
++			 * Empty or freeable LEBs could contain index
++			 * nodes from an uncompleted commit due to an
++			 * unclean unmount. Or they could be empty for
++			 * the same reason.
++			 */
++			free = lp->free;
++			dirty = lp->dirty;
++			is_idx = 0;
++		    }
++
++	if (is_idx && lp->free + lp->dirty == free + dirty &&
++	    lnum != c->ihead_lnum) {
++		/*
++		 * After an unclean unmount, an index LEB could have a different
++		 * amount of free space than the value recorded by lprops. That
++		 * is because the in-the-gaps method may use free space or
++		 * create free space (as a side-effect of using ubi_leb_change
++		 * and not writing the whole LEB). The incorrect free space
++		 * value is not a problem because the index is only ever
++		 * allocated empty LEBs, so there will never be an attempt to
++		 * write to the free space at the end of an index LEB - except
++		 * by the in-the-gaps method for which it is not a problem.
++		 */
++		free = lp->free;
++		dirty = lp->dirty;
++	}
++
++	if (lp->free != free || lp->dirty != dirty)
++		goto out_print;
++
++	if (is_idx && !(lp->flags & LPROPS_INDEX)) {
++		if (free == c->leb_size)
++			/* Free but not unmapped LEB, it's fine */
++			is_idx = 0;
++		else {
++			ubifs_err("indexing node without indexing "
++				  "flag");
++			goto out_print;
++		}
++	}
++
++	if (!is_idx && (lp->flags & LPROPS_INDEX)) {
++		ubifs_err("data node with indexing flag");
++		goto out_print;
++	}
++
++	if (free == c->leb_size)
++		lst->empty_lebs += 1;
++
++	if (is_idx)
++		lst->idx_lebs += 1;
++
++	if (!(lp->flags & LPROPS_INDEX))
++		lst->total_used += c->leb_size - free - dirty;
++	lst->total_free += free;
++	lst->total_dirty += dirty;
++
++	if (!(lp->flags & LPROPS_INDEX)) {
++		int spc = free + dirty;
++
++		if (spc < c->dead_wm)
++			lst->total_dead += spc;
++		else
++			lst->total_dark += calc_dark(c, spc);
++	}
++
++	ubifs_scan_destroy(sleb);
++
++	return LPT_SCAN_CONTINUE;
++
++out_print:
++	ubifs_err("bad accounting of LEB %d: free %d, dirty %d flags %#x, "
++		  "should be free %d, dirty %d",
++		  lnum, lp->free, lp->dirty, lp->flags, free, dirty);
++	dbg_dump_leb(c, lnum);
++out_destroy:
++	ubifs_scan_destroy(sleb);
++out:
++	data->err = -EINVAL;
++	return LPT_SCAN_STOP;
++}
++
++/**
++ * dbg_check_lprops - check all LEB properties.
++ * @c: UBIFS file-system description object
++ *
++ * This function checks all LEB properties and makes sure they are all correct.
++ * It returns zero if everything is fine, %-EINVAL if there is an inconsistency
++ * and other negative error codes in case of other errors. This function is
++ * called while the file system is locked (because of commit start), so no
++ * additional locking is required. Note that locking the LPT mutex would cause
++ * a circular lock dependency with the TNC mutex.
++ */
++int dbg_check_lprops(struct ubifs_info *c)
++{
++	int i, err;
++	struct scan_check_data data;
++	struct ubifs_lp_stats *lst = &data.lst;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_LPROPS))
++		return 0;
++
++	/*
++	 * As we are going to scan the media, the write buffers have to be
++	 * synchronized.
++	 */
++	for (i = 0; i < c->jhead_cnt; i++) {
++		err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++		if (err)
++			return err;
++	}
++
++	memset(lst, 0, sizeof(struct ubifs_lp_stats));
++
++	data.err = 0;
++	err = ubifs_lpt_scan_nolock(c, c->main_first, c->leb_cnt - 1,
++				    (ubifs_lpt_scan_callback)scan_check_cb,
++				    &data);
++	if (err && err != -ENOSPC)
++		goto out;
++	if (data.err) {
++		err = data.err;
++		goto out;
++	}
++
++	if (lst->empty_lebs != c->lst.empty_lebs ||
++	    lst->idx_lebs != c->lst.idx_lebs ||
++	    lst->total_free != c->lst.total_free ||
++	    lst->total_dirty != c->lst.total_dirty ||
++	    lst->total_used != c->lst.total_used) {
++		ubifs_err("bad overall accounting");
++		ubifs_err("calculated: empty_lebs %d, idx_lebs %d, "
++			  "total_free %lld, total_dirty %lld, total_used %lld",
++			  lst->empty_lebs, lst->idx_lebs, lst->total_free,
++			  lst->total_dirty, lst->total_used);
++		ubifs_err("read from lprops: empty_lebs %d, idx_lebs %d, "
++			  "total_free %lld, total_dirty %lld, total_used %lld",
++			  c->lst.empty_lebs, c->lst.idx_lebs, c->lst.total_free,
++			  c->lst.total_dirty, c->lst.total_used);
++		err = -EINVAL;
++		goto out;
++	}
++
++	if (lst->total_dead != c->lst.total_dead ||
++	    lst->total_dark != c->lst.total_dark) {
++		ubifs_err("bad dead/dark space accounting");
++		ubifs_err("calculated: total_dead %lld, total_dark %lld",
++			  lst->total_dead, lst->total_dark);
++		ubifs_err("read from lprops: total_dead %lld, total_dark %lld",
++			  c->lst.total_dead, c->lst.total_dark);
++		err = -EINVAL;
++		goto out;
++	}
++
++	err = dbg_check_cats(c);
++out:
++	return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/lpt.c avr32-2.6/fs/ubifs/lpt.c
+--- linux-2.6.25.6/fs/ubifs/lpt.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/lpt.c	2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,2241 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements the LEB properties tree (LPT) area. The LPT area
++ * contains the LEB properties tree, a table of LPT area eraseblocks (ltab), and
++ * (for the "big" model) a table of saved LEB numbers (lsave). The LPT area sits
++ * between the log and the orphan area.
++ *
++ * The LPT area is like a miniature self-contained file system. It is required
++ * that it never runs out of space, is fast to access and update, and scales
++ * logarithmically. The LEB properties tree is implemented as a wandering tree
++ * much like the TNC, and the LPT area has its own garbage collection.
++ *
++ * The LPT has two slightly different forms called the "small model" and the
++ * "big model". The small model is used when the entire LEB properties table
++ * can be written into a single eraseblock. In that case, garbage collection
++ * consists of just writing the whole table, which therefore makes all other
++ * eraseblocks reusable. In the case of the big model, dirty eraseblocks are
++ * selected for garbage collection, which consists are marking the nodes in
++ * that LEB as dirty, and then only the dirty nodes are written out. Also, in
++ * the case of the big model, a table of LEB numbers is saved so that the entire
++ * LPT does not to be scanned looking for empty eraseblocks when UBIFS is first
++ * mounted.
++ */
++
++#include <linux/crc16.h>
++#include "ubifs.h"
++
++/**
++ * do_calc_lpt_geom - calculate sizes for the LPT area.
++ * @c: the UBIFS file-system description object
++ *
++ * Calculate the sizes of LPT bit fields, nodes, and tree, based on the
++ * properties of the flash and whether LPT is "big" (c->big_lpt).
++ */
++static void do_calc_lpt_geom(struct ubifs_info *c)
++{
++	int i, n, bits, per_leb_wastage, max_pnode_cnt;
++	long long sz, tot_wastage;
++
++	n = c->main_lebs + c->max_leb_cnt - c->leb_cnt;
++	max_pnode_cnt = DIV_ROUND_UP(n, UBIFS_LPT_FANOUT);
++
++	c->lpt_hght = 1;
++	n = UBIFS_LPT_FANOUT;
++	while (n < max_pnode_cnt) {
++		c->lpt_hght += 1;
++		n <<= UBIFS_LPT_FANOUT_SHIFT;
++	}
++
++	c->pnode_cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT);
++
++	n = DIV_ROUND_UP(c->pnode_cnt, UBIFS_LPT_FANOUT);
++	c->nnode_cnt = n;
++	for (i = 1; i < c->lpt_hght; i++) {
++		n = DIV_ROUND_UP(n, UBIFS_LPT_FANOUT);
++		c->nnode_cnt += n;
++	}
++
++	c->space_bits = fls(c->leb_size) - 3;
++	c->lpt_lnum_bits = fls(c->lpt_lebs);
++	c->lpt_offs_bits = fls(c->leb_size - 1);
++	c->lpt_spc_bits = fls(c->leb_size);
++
++	n = DIV_ROUND_UP(c->max_leb_cnt, UBIFS_LPT_FANOUT);
++	c->pcnt_bits = fls(n - 1);
++
++	c->lnum_bits = fls(c->max_leb_cnt - 1);
++
++	bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
++	       (c->big_lpt ? c->pcnt_bits : 0) +
++	       (c->space_bits * 2 + 1) * UBIFS_LPT_FANOUT;
++	c->pnode_sz = (bits + 7) / 8;
++
++	bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
++	       (c->big_lpt ? c->pcnt_bits : 0) +
++	       (c->lpt_lnum_bits + c->lpt_offs_bits) * UBIFS_LPT_FANOUT;
++	c->nnode_sz = (bits + 7) / 8;
++
++	bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
++	       c->lpt_lebs * c->lpt_spc_bits * 2;
++	c->ltab_sz = (bits + 7) / 8;
++
++	bits = UBIFS_LPT_CRC_BITS + UBIFS_LPT_TYPE_BITS +
++	       c->lnum_bits * c->lsave_cnt;
++	c->lsave_sz = (bits + 7) / 8;
++
++	/* Calculate the minimum LPT size */
++	c->lpt_sz = (long long)c->pnode_cnt * c->pnode_sz;
++	c->lpt_sz += (long long)c->nnode_cnt * c->nnode_sz;
++	c->lpt_sz += c->ltab_sz;
++	c->lpt_sz += c->lsave_sz;
++
++	/* Add wastage */
++	sz = c->lpt_sz;
++	per_leb_wastage = max_t(int, c->pnode_sz, c->nnode_sz);
++	sz += per_leb_wastage;
++	tot_wastage = per_leb_wastage;
++	while (sz > c->leb_size) {
++		sz += per_leb_wastage;
++		sz -= c->leb_size;
++		tot_wastage += per_leb_wastage;
++	}
++	tot_wastage += ALIGN(sz, c->min_io_size) - sz;
++	c->lpt_sz += tot_wastage;
++}
++
++/**
++ * ubifs_calc_lpt_geom - calculate and check sizes for the LPT area.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_calc_lpt_geom(struct ubifs_info *c)
++{
++	int lebs_needed;
++	uint64_t sz;
++
++	do_calc_lpt_geom(c);
++
++	/* Verify that lpt_lebs is big enough */
++	sz = c->lpt_sz * 2; /* Must have at least 2 times the size */
++	sz += c->leb_size - 1;
++	do_div(sz, c->leb_size);
++	lebs_needed = sz;
++	if (lebs_needed > c->lpt_lebs) {
++		ubifs_err("too few LPT LEBs");
++		return -EINVAL;
++	}
++
++	/* Verify that ltab fits in a single LEB (since ltab is a single node */
++	if (c->ltab_sz > c->leb_size) {
++		ubifs_err("LPT ltab too big");
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/**
++ * calc_dflt_lpt_geom - calculate default LPT geometry.
++ * @c: the UBIFS file-system description object
++ * @main_lebs: number of main area LEBs is passed and returned here
++ * @big_lpt: whether the LPT area is "big" is returned here
++ *
++ * The size of the LPT area depends on parameters that themselves are dependent
++ * on the size of the LPT area. This function, successively recalculates the LPT
++ * area geometry until the parameters and resultant geometry are consistent.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs,
++			      int *big_lpt)
++{
++	int i, lebs_needed;
++	uint64_t sz;
++
++	/* Start by assuming the minimum number of LPT LEBs */
++	c->lpt_lebs = UBIFS_MIN_LPT_LEBS;
++	c->main_lebs = *main_lebs - c->lpt_lebs;
++	if (c->main_lebs <= 0)
++		return -EINVAL;
++
++	/* And assume we will use the small LPT model */
++	c->big_lpt = 0;
++
++	/*
++	 * Calculate the geometry based on assumptions above and then see if it
++	 * makes sense
++	 */
++	do_calc_lpt_geom(c);
++
++	/* Small LPT model must have lpt_sz < leb_size */
++	if (c->lpt_sz > c->leb_size) {
++		/* Nope, so try again using big LPT model */
++		c->big_lpt = 1;
++		do_calc_lpt_geom(c);
++	}
++
++	/* Now check there are enough LPT LEBs */
++	for (i = 0; i < 64 ; i++) {
++		sz = c->lpt_sz * 4; /* Allow 4 times the size */
++		sz += c->leb_size - 1;
++		do_div(sz, c->leb_size);
++		lebs_needed = sz;
++		if (lebs_needed > c->lpt_lebs) {
++			/* Not enough LPT LEBs so try again with more */
++			c->lpt_lebs = lebs_needed;
++			c->main_lebs = *main_lebs - c->lpt_lebs;
++			if (c->main_lebs <= 0)
++				return -EINVAL;
++			do_calc_lpt_geom(c);
++			continue;
++		}
++		if (c->ltab_sz > c->leb_size) {
++			ubifs_err("LPT ltab too big");
++			return -EINVAL;
++		}
++		*main_lebs = c->main_lebs;
++		*big_lpt = c->big_lpt;
++		return 0;
++	}
++	return -EINVAL;
++}
++
++/**
++ * pack_bits - pack bit fields end-to-end.
++ * @addr: address at which to pack (passed and next address returned)
++ * @pos: bit position at which to pack (passed and next position returned)
++ * @val: value to pack
++ * @nrbits: number of bits of value to pack (1-32)
++ */
++static void pack_bits(uint8_t **addr, int *pos, uint32_t val, int nrbits)
++{
++	uint8_t *p = *addr;
++	int b = *pos;
++
++	ubifs_assert(nrbits > 0);
++	ubifs_assert(nrbits <= 32);
++	ubifs_assert(*pos >= 0);
++	ubifs_assert(*pos < 8);
++	ubifs_assert((val >> nrbits) == 0 || nrbits == 32);
++	if (b) {
++		*p |= ((uint8_t)val) << b;
++		nrbits += b;
++		if (nrbits > 8) {
++			*++p = (uint8_t)(val >>= (8 - b));
++			if (nrbits > 16) {
++				*++p = (uint8_t)(val >>= 8);
++				if (nrbits > 24) {
++					*++p = (uint8_t)(val >>= 8);
++					if (nrbits > 32)
++						*++p = (uint8_t)(val >>= 8);
++				}
++			}
++		}
++	} else {
++		*p = (uint8_t)val;
++		if (nrbits > 8) {
++			*++p = (uint8_t)(val >>= 8);
++			if (nrbits > 16) {
++				*++p = (uint8_t)(val >>= 8);
++				if (nrbits > 24)
++					*++p = (uint8_t)(val >>= 8);
++			}
++		}
++	}
++	b = nrbits & 7;
++	if (b == 0)
++		p++;
++	*addr = p;
++	*pos = b;
++}
++
++/**
++ * ubifs_unpack_bits - unpack bit fields.
++ * @addr: address at which to unpack (passed and next address returned)
++ * @pos: bit position at which to unpack (passed and next position returned)
++ * @nrbits: number of bits of value to unpack (1-32)
++ *
++ * This functions returns the value unpacked.
++ */
++uint32_t ubifs_unpack_bits(uint8_t **addr, int *pos, int nrbits)
++{
++	const int k = 32 - nrbits;
++	uint8_t *p = *addr;
++	int b = *pos;
++	uint32_t val;
++
++	ubifs_assert(nrbits > 0);
++	ubifs_assert(nrbits <= 32);
++	ubifs_assert(*pos >= 0);
++	ubifs_assert(*pos < 8);
++	if (b) {
++		val = p[1] | ((uint32_t)p[2] << 8) | ((uint32_t)p[3] << 16) |
++		      ((uint32_t)p[4] << 24);
++		val <<= (8 - b);
++		val |= *p >> b;
++		nrbits += b;
++	} else
++		val = p[0] | ((uint32_t)p[1] << 8) | ((uint32_t)p[2] << 16) |
++		      ((uint32_t)p[3] << 24);
++	val <<= k;
++	val >>= k;
++	b = nrbits & 7;
++	p += nrbits / 8;
++	*addr = p;
++	*pos = b;
++	ubifs_assert((val >> nrbits) == 0 || nrbits - b == 32);
++	return val;
++}
++
++/**
++ * ubifs_pack_pnode - pack all the bit fields of a pnode.
++ * @c: UBIFS file-system description object
++ * @buf: buffer into which to pack
++ * @pnode: pnode to pack
++ */
++void ubifs_pack_pnode(struct ubifs_info *c, void *buf,
++		      struct ubifs_pnode *pnode)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int i, pos = 0;
++	uint16_t crc;
++
++	pack_bits(&addr, &pos, UBIFS_LPT_PNODE, UBIFS_LPT_TYPE_BITS);
++	if (c->big_lpt)
++		pack_bits(&addr, &pos, pnode->num, c->pcnt_bits);
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		pack_bits(&addr, &pos, pnode->lprops[i].free >> 3,
++			  c->space_bits);
++		pack_bits(&addr, &pos, pnode->lprops[i].dirty >> 3,
++			  c->space_bits);
++		if (pnode->lprops[i].flags & LPROPS_INDEX)
++			pack_bits(&addr, &pos, 1, 1);
++		else
++			pack_bits(&addr, &pos, 0, 1);
++	}
++	crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++		    c->pnode_sz - UBIFS_LPT_CRC_BYTES);
++	addr = buf;
++	pos = 0;
++	pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
++}
++
++/**
++ * ubifs_pack_nnode - pack all the bit fields of a nnode.
++ * @c: UBIFS file-system description object
++ * @buf: buffer into which to pack
++ * @nnode: nnode to pack
++ */
++void ubifs_pack_nnode(struct ubifs_info *c, void *buf,
++		      struct ubifs_nnode *nnode)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int i, pos = 0;
++	uint16_t crc;
++
++	pack_bits(&addr, &pos, UBIFS_LPT_NNODE, UBIFS_LPT_TYPE_BITS);
++	if (c->big_lpt)
++		pack_bits(&addr, &pos, nnode->num, c->pcnt_bits);
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		int lnum = nnode->nbranch[i].lnum;
++
++		if (lnum == 0)
++			lnum = c->lpt_last + 1;
++		pack_bits(&addr, &pos, lnum - c->lpt_first, c->lpt_lnum_bits);
++		pack_bits(&addr, &pos, nnode->nbranch[i].offs,
++			  c->lpt_offs_bits);
++	}
++	crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++		    c->nnode_sz - UBIFS_LPT_CRC_BYTES);
++	addr = buf;
++	pos = 0;
++	pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
++}
++
++/**
++ * ubifs_pack_ltab - pack the LPT's own lprops table.
++ * @c: UBIFS file-system description object
++ * @buf: buffer into which to pack
++ * @ltab: LPT's own lprops table to pack
++ */
++void ubifs_pack_ltab(struct ubifs_info *c, void *buf,
++		     struct ubifs_lpt_lprops *ltab)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int i, pos = 0;
++	uint16_t crc;
++
++	pack_bits(&addr, &pos, UBIFS_LPT_LTAB, UBIFS_LPT_TYPE_BITS);
++	for (i = 0; i < c->lpt_lebs; i++) {
++		pack_bits(&addr, &pos, ltab[i].free, c->lpt_spc_bits);
++		pack_bits(&addr, &pos, ltab[i].dirty, c->lpt_spc_bits);
++	}
++	crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++		    c->ltab_sz - UBIFS_LPT_CRC_BYTES);
++	addr = buf;
++	pos = 0;
++	pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
++}
++
++/**
++ * ubifs_pack_lsave - pack the LPT's save table.
++ * @c: UBIFS file-system description object
++ * @buf: buffer into which to pack
++ * @lsave: LPT's save table to pack
++ */
++void ubifs_pack_lsave(struct ubifs_info *c, void *buf, int *lsave)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int i, pos = 0;
++	uint16_t crc;
++
++	pack_bits(&addr, &pos, UBIFS_LPT_LSAVE, UBIFS_LPT_TYPE_BITS);
++	for (i = 0; i < c->lsave_cnt; i++)
++		pack_bits(&addr, &pos, lsave[i], c->lnum_bits);
++	crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++		    c->lsave_sz - UBIFS_LPT_CRC_BYTES);
++	addr = buf;
++	pos = 0;
++	pack_bits(&addr, &pos, crc, UBIFS_LPT_CRC_BITS);
++}
++
++/**
++ * ubifs_add_lpt_dirt - add dirty space to LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to which to add dirty space
++ * @dirty: amount of dirty space to add
++ */
++void ubifs_add_lpt_dirt(struct ubifs_info *c, int lnum, int dirty)
++{
++	if (!dirty || !lnum)
++		return;
++	dbg_lp("LEB %d add %d to %d",
++	       lnum, dirty, c->ltab[lnum - c->lpt_first].dirty);
++	ubifs_assert(lnum >= c->lpt_first && lnum <= c->lpt_last);
++	c->ltab[lnum - c->lpt_first].dirty += dirty;
++}
++
++/**
++ * set_ltab - set LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @free: amount of free space
++ * @dirty: amount of dirty space
++ */
++static void set_ltab(struct ubifs_info *c, int lnum, int free, int dirty)
++{
++	dbg_lp("LEB %d free %d dirty %d to %d %d",
++	       lnum, c->ltab[lnum - c->lpt_first].free,
++	       c->ltab[lnum - c->lpt_first].dirty, free, dirty);
++	ubifs_assert(lnum >= c->lpt_first && lnum <= c->lpt_last);
++	c->ltab[lnum - c->lpt_first].free = free;
++	c->ltab[lnum - c->lpt_first].dirty = dirty;
++}
++
++/**
++ * ubifs_add_nnode_dirt - add dirty space to LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode for which to add dirt
++ */
++void ubifs_add_nnode_dirt(struct ubifs_info *c, struct ubifs_nnode *nnode)
++{
++	struct ubifs_nnode *np = nnode->parent;
++
++	if (np)
++		ubifs_add_lpt_dirt(c, np->nbranch[nnode->iip].lnum,
++				   c->nnode_sz);
++	else {
++		ubifs_add_lpt_dirt(c, c->lpt_lnum, c->nnode_sz);
++		if (!(c->lpt_drty_flgs & LTAB_DIRTY)) {
++			c->lpt_drty_flgs |= LTAB_DIRTY;
++			ubifs_add_lpt_dirt(c, c->ltab_lnum, c->ltab_sz);
++		}
++	}
++}
++
++/**
++ * add_pnode_dirt - add dirty space to LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode for which to add dirt
++ */
++static void add_pnode_dirt(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++	ubifs_add_lpt_dirt(c, pnode->parent->nbranch[pnode->iip].lnum,
++			   c->pnode_sz);
++}
++
++/**
++ * calc_nnode_num - calculate nnode number.
++ * @row: the row in the tree (root is zero)
++ * @col: the column in the row (leftmost is zero)
++ *
++ * The nnode number is a number that uniquely identifies a nnode and can be used
++ * easily to traverse the tree from the root to that nnode.
++ *
++ * This function calculates and returns the nnode number for the nnode at @row
++ * and @col.
++ */
++static int calc_nnode_num(int row, int col)
++{
++	int num, bits;
++
++	num = 1;
++	while (row--) {
++		bits = (col & (UBIFS_LPT_FANOUT - 1));
++		col >>= UBIFS_LPT_FANOUT_SHIFT;
++		num <<= UBIFS_LPT_FANOUT_SHIFT;
++		num |= bits;
++	}
++	return num;
++}
++
++/**
++ * calc_nnode_num_from_parent - calculate nnode number.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * The nnode number is a number that uniquely identifies a nnode and can be used
++ * easily to traverse the tree from the root to that nnode.
++ *
++ * This function calculates and returns the nnode number based on the parent's
++ * nnode number and the index in parent.
++ */
++static int calc_nnode_num_from_parent(struct ubifs_info *c,
++				      struct ubifs_nnode *parent, int iip)
++{
++	int num, shft;
++
++	if (!parent)
++		return 1;
++	shft = (c->lpt_hght - parent->level) * UBIFS_LPT_FANOUT_SHIFT;
++	num = parent->num ^ (1 << shft);
++	num |= (UBIFS_LPT_FANOUT + iip) << shft;
++	return num;
++}
++
++/**
++ * calc_pnode_num_from_parent - calculate pnode number.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * The pnode number is a number that uniquely identifies a pnode and can be used
++ * easily to traverse the tree from the root to that pnode.
++ *
++ * This function calculates and returns the pnode number based on the parent's
++ * nnode number and the index in parent.
++ */
++static int calc_pnode_num_from_parent(struct ubifs_info *c,
++				      struct ubifs_nnode *parent, int iip)
++{
++	int i, n = c->lpt_hght - 1, pnum = parent->num, num = 0;
++
++	for (i = 0; i < n; i++) {
++		num <<= UBIFS_LPT_FANOUT_SHIFT;
++		num |= pnum & (UBIFS_LPT_FANOUT - 1);
++		pnum >>= UBIFS_LPT_FANOUT_SHIFT;
++	}
++	num <<= UBIFS_LPT_FANOUT_SHIFT;
++	num |= iip;
++	return num;
++}
++
++/**
++ * ubifs_create_dflt_lpt - create default LPT.
++ * @c: UBIFS file-system description object
++ * @main_lebs: number of main area LEBs is passed and returned here
++ * @lpt_first: LEB number of first LPT LEB
++ * @lpt_lebs: number of LEBs for LPT is passed and returned here
++ * @big_lpt: use big LPT model is passed and returned here
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first,
++			  int *lpt_lebs, int *big_lpt)
++{
++	int lnum, err = 0, node_sz, iopos, i, j, cnt, len, alen, row;
++	int blnum, boffs, bsz, bcnt;
++	struct ubifs_pnode *pnode = NULL;
++	struct ubifs_nnode *nnode = NULL;
++	void *buf = NULL, *p;
++	struct ubifs_lpt_lprops *ltab = NULL;
++	int *lsave = NULL;
++
++	err = calc_dflt_lpt_geom(c, main_lebs, big_lpt);
++	if (err)
++		return err;
++	*lpt_lebs = c->lpt_lebs;
++
++	/* Needed by 'ubifs_pack_nnode()' and 'set_ltab()' */
++	c->lpt_first = lpt_first;
++	/* Needed by 'set_ltab()' */
++	c->lpt_last = lpt_first + c->lpt_lebs - 1;
++	/* Needed by 'ubifs_pack_lsave()' */
++	c->main_first = c->leb_cnt - *main_lebs;
++
++	lsave = kmalloc(sizeof(int) * c->lsave_cnt, GFP_KERNEL);
++	pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_KERNEL);
++	nnode = kzalloc(sizeof(struct ubifs_nnode), GFP_KERNEL);
++	buf = vmalloc(c->leb_size);
++	ltab = vmalloc(sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs);
++	if (!pnode || !nnode || !buf || !ltab || !lsave) {
++		err = -ENOMEM;
++		goto out;
++	}
++
++	ubifs_assert(!c->ltab);
++	c->ltab = ltab; /* Needed by set_ltab */
++
++	/* Initialize LPT's own lprops */
++	for (i = 0; i < c->lpt_lebs; i++) {
++		ltab[i].free = c->leb_size;
++		ltab[i].dirty = 0;
++		ltab[i].tgc = 0;
++		ltab[i].cmt = 0;
++	}
++
++	lnum = lpt_first;
++	p = buf;
++	/* Number of leaf nodes (pnodes) */
++	cnt = c->pnode_cnt;
++
++	/*
++	 * The first pnode contains the LEB properties for the LEBs that contain
++	 * the root inode node and the root index node of the index tree.
++	 */
++	node_sz = ALIGN(ubifs_idx_node_sz(c, 1), 8);
++	iopos = ALIGN(node_sz, c->min_io_size);
++	pnode->lprops[0].free = c->leb_size - iopos;
++	pnode->lprops[0].dirty = iopos - node_sz;
++	pnode->lprops[0].flags = LPROPS_INDEX;
++
++	node_sz = UBIFS_INO_NODE_SZ;
++	iopos = ALIGN(node_sz, c->min_io_size);
++	pnode->lprops[1].free = c->leb_size - iopos;
++	pnode->lprops[1].dirty = iopos - node_sz;
++
++	for (i = 2; i < UBIFS_LPT_FANOUT; i++)
++		pnode->lprops[i].free = c->leb_size;
++
++	/* Add first pnode */
++	ubifs_pack_pnode(c, p, pnode);
++	p += c->pnode_sz;
++	len = c->pnode_sz;
++	pnode->num += 1;
++
++	/* Reset pnode values for remaining pnodes */
++	pnode->lprops[0].free = c->leb_size;
++	pnode->lprops[0].dirty = 0;
++	pnode->lprops[0].flags = 0;
++
++	pnode->lprops[1].free = c->leb_size;
++	pnode->lprops[1].dirty = 0;
++
++	/*
++	 * To calculate the internal node branches, we keep information about
++	 * the level below.
++	 */
++	blnum = lnum; /* LEB number of level below */
++	boffs = 0; /* Offset of level below */
++	bcnt = cnt; /* Number of nodes in level below */
++	bsz = c->pnode_sz; /* Size of nodes in level below */
++
++	/* Add all remaining pnodes */
++	for (i = 1; i < cnt; i++) {
++		if (len + c->pnode_sz > c->leb_size) {
++			alen = ALIGN(len, c->min_io_size);
++			set_ltab(c, lnum, c->leb_size - alen, alen - len);
++			memset(p, 0xff, alen - len);
++			err = ubi_leb_change(c->ubi, lnum++, buf, alen,
++					     UBI_SHORTTERM);
++			if (err)
++				goto out;
++			p = buf;
++			len = 0;
++		}
++		ubifs_pack_pnode(c, p, pnode);
++		p += c->pnode_sz;
++		len += c->pnode_sz;
++		/*
++		 * pnodes are simply numbered left to right starting at zero,
++		 * which means the pnode number can be used easily to traverse
++		 * down the tree to the corresponding pnode.
++		 */
++		pnode->num += 1;
++	}
++
++	row = 0;
++	for (i = UBIFS_LPT_FANOUT; cnt > i; i <<= UBIFS_LPT_FANOUT_SHIFT)
++		row += 1;
++	/* Add all nnodes, one level at a time */
++	while (1) {
++		/* Number of internal nodes (nnodes) at next level */
++		cnt = DIV_ROUND_UP(cnt, UBIFS_LPT_FANOUT);
++		for (i = 0; i < cnt; i++) {
++			if (len + c->nnode_sz > c->leb_size) {
++				alen = ALIGN(len, c->min_io_size);
++				set_ltab(c, lnum, c->leb_size - alen,
++					    alen - len);
++				memset(p, 0xff, alen - len);
++				err = ubi_leb_change(c->ubi, lnum++, buf, alen,
++						     UBI_SHORTTERM);
++				if (err)
++					goto out;
++				p = buf;
++				len = 0;
++			}
++			/* Only 1 nnode at this level, so it is the root */
++			if (cnt == 1) {
++				c->lpt_lnum = lnum;
++				c->lpt_offs = len;
++			}
++			/* Set branches to the level below */
++			for (j = 0; j < UBIFS_LPT_FANOUT; j++) {
++				if (bcnt) {
++					if (boffs + bsz > c->leb_size) {
++						blnum += 1;
++						boffs = 0;
++					}
++					nnode->nbranch[j].lnum = blnum;
++					nnode->nbranch[j].offs = boffs;
++					boffs += bsz;
++					bcnt--;
++				} else {
++					nnode->nbranch[j].lnum = 0;
++					nnode->nbranch[j].offs = 0;
++				}
++			}
++			nnode->num = calc_nnode_num(row, i);
++			ubifs_pack_nnode(c, p, nnode);
++			p += c->nnode_sz;
++			len += c->nnode_sz;
++		}
++		/* Only 1 nnode at this level, so it is the root */
++		if (cnt == 1)
++			break;
++		/* Update the information about the level below */
++		bcnt = cnt;
++		bsz = c->nnode_sz;
++		row -= 1;
++	}
++
++	if (*big_lpt) {
++		/* Need to add LPT's save table */
++		if (len + c->lsave_sz > c->leb_size) {
++			alen = ALIGN(len, c->min_io_size);
++			set_ltab(c, lnum, c->leb_size - alen, alen - len);
++			memset(p, 0xff, alen - len);
++			err = ubi_leb_change(c->ubi, lnum++, buf, alen,
++					     UBI_SHORTTERM);
++			if (err)
++				goto out;
++			p = buf;
++			len = 0;
++		}
++
++		c->lsave_lnum = lnum;
++		c->lsave_offs = len;
++
++		for (i = 0; i < c->lsave_cnt && i < *main_lebs; i++)
++			lsave[i] = c->main_first + i;
++		for (; i < c->lsave_cnt; i++)
++			lsave[i] = c->main_first;
++
++		ubifs_pack_lsave(c, p, lsave);
++		p += c->lsave_sz;
++		len += c->lsave_sz;
++	}
++
++	/* Need to add LPT's own LEB properties table */
++	if (len + c->ltab_sz > c->leb_size) {
++		alen = ALIGN(len, c->min_io_size);
++		set_ltab(c, lnum, c->leb_size - alen, alen - len);
++		memset(p, 0xff, alen - len);
++		err = ubi_leb_change(c->ubi, lnum++, buf, alen, UBI_SHORTTERM);
++		if (err)
++			goto out;
++		p = buf;
++		len = 0;
++	}
++
++	c->ltab_lnum = lnum;
++	c->ltab_offs = len;
++
++	/* Update ltab before packing it */
++	len += c->ltab_sz;
++	alen = ALIGN(len, c->min_io_size);
++	set_ltab(c, lnum, c->leb_size - alen, alen - len);
++
++	ubifs_pack_ltab(c, p, ltab);
++	p += c->ltab_sz;
++
++	/* Write remaining buffer */
++	memset(p, 0xff, alen - len);
++	err = ubi_leb_change(c->ubi, lnum, buf, alen, UBI_SHORTTERM);
++	if (err)
++		goto out;
++
++	c->nhead_lnum = lnum;
++	c->nhead_offs = ALIGN(len, c->min_io_size);
++
++	dbg_lp("space_bits %d", c->space_bits);
++	dbg_lp("lpt_lnum_bits %d", c->lpt_lnum_bits);
++	dbg_lp("lpt_offs_bits %d", c->lpt_offs_bits);
++	dbg_lp("lpt_spc_bits %d", c->lpt_spc_bits);
++	dbg_lp("pcnt_bits %d", c->pcnt_bits);
++	dbg_lp("lnum_bits %d", c->lnum_bits);
++	dbg_lp("pnode_sz %d", c->pnode_sz);
++	dbg_lp("nnode_sz %d", c->nnode_sz);
++	dbg_lp("ltab_sz %d", c->ltab_sz);
++	dbg_lp("lsave_sz %d", c->lsave_sz);
++	dbg_lp("lsave_cnt %d", c->lsave_cnt);
++	dbg_lp("lpt_hght %d", c->lpt_hght);
++	dbg_lp("big_lpt %d", c->big_lpt);
++	dbg_lp("LPT root is at %d:%d", c->lpt_lnum, c->lpt_offs);
++	dbg_lp("LPT head is at %d:%d", c->nhead_lnum, c->nhead_offs);
++	dbg_lp("LPT ltab is at %d:%d", c->ltab_lnum, c->ltab_offs);
++	if (c->big_lpt)
++		dbg_lp("LPT lsave is at %d:%d", c->lsave_lnum, c->lsave_offs);
++out:
++	c->ltab = NULL;
++	kfree(lsave);
++	vfree(ltab);
++	vfree(buf);
++	kfree(nnode);
++	kfree(pnode);
++	return err;
++}
++
++/**
++ * update_cats - add LEB properties of a pnode to LEB category lists and heaps.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode
++ *
++ * When a pnode is loaded into memory, the LEB properties it contains are added,
++ * by this function, to the LEB category lists and heaps.
++ */
++static void update_cats(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++	int i;
++
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		int cat = pnode->lprops[i].flags & LPROPS_CAT_MASK;
++		int lnum = pnode->lprops[i].lnum;
++
++		if (!lnum)
++			return;
++		ubifs_add_to_cat(c, &pnode->lprops[i], cat);
++	}
++}
++
++/**
++ * replace_cats - add LEB properties of a pnode to LEB category lists and heaps.
++ * @c: UBIFS file-system description object
++ * @old_pnode: pnode copied
++ * @new_pnode: pnode copy
++ *
++ * During commit it is sometimes necessary to copy a pnode
++ * (see dirty_cow_pnode).  When that happens, references in
++ * category lists and heaps must be replaced.  This function does that.
++ */
++static void replace_cats(struct ubifs_info *c, struct ubifs_pnode *old_pnode,
++			 struct ubifs_pnode *new_pnode)
++{
++	int i;
++
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		if (!new_pnode->lprops[i].lnum)
++			return;
++		ubifs_replace_cat(c, &old_pnode->lprops[i],
++				  &new_pnode->lprops[i]);
++	}
++}
++
++/**
++ * check_lpt_crc - check LPT node crc is correct.
++ * @c: UBIFS file-system description object
++ * @buf: buffer containing node
++ * @len: length of node
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int check_lpt_crc(void *buf, int len)
++{
++	int pos = 0;
++	uint8_t *addr = buf;
++	uint16_t crc, calc_crc;
++
++	crc = ubifs_unpack_bits(&addr, &pos, UBIFS_LPT_CRC_BITS);
++	calc_crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++			 len - UBIFS_LPT_CRC_BYTES);
++	if (crc != calc_crc) {
++		ubifs_err("invalid crc in LPT node: crc %hx calc %hx", crc,
++			  calc_crc);
++		dbg_dump_stack();
++		return -EINVAL;
++	}
++	return 0;
++}
++
++/**
++ * check_lpt_type - check LPT node type is correct.
++ * @c: UBIFS file-system description object
++ * @addr: address of type bit field is passed and returned updated here
++ * @pos: position of type bit field is passed and returned updated here
++ * @type: expected type
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int check_lpt_type(uint8_t **addr, int *pos, int type)
++{
++	int node_type;
++
++	node_type = ubifs_unpack_bits(addr, pos, UBIFS_LPT_TYPE_BITS);
++	if (node_type != type) {
++		ubifs_err("invalid type (%d) in LPT node type %d", node_type,
++			  type);
++		dbg_dump_stack();
++		return -EINVAL;
++	}
++	return 0;
++}
++
++/**
++ * unpack_pnode - unpack a pnode.
++ * @c: UBIFS file-system description object
++ * @buf: buffer containing packed pnode to unpack
++ * @pnode: pnode structure to fill
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int unpack_pnode(struct ubifs_info *c, void *buf,
++			struct ubifs_pnode *pnode)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int i, pos = 0, err;
++
++	err = check_lpt_type(&addr, &pos, UBIFS_LPT_PNODE);
++	if (err)
++		return err;
++	if (c->big_lpt)
++		pnode->num = ubifs_unpack_bits(&addr, &pos, c->pcnt_bits);
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		struct ubifs_lprops * const lprops = &pnode->lprops[i];
++
++		lprops->free = ubifs_unpack_bits(&addr, &pos, c->space_bits);
++		lprops->free <<= 3;
++		lprops->dirty = ubifs_unpack_bits(&addr, &pos, c->space_bits);
++		lprops->dirty <<= 3;
++
++		if (ubifs_unpack_bits(&addr, &pos, 1))
++			lprops->flags = LPROPS_INDEX;
++		else
++			lprops->flags = 0;
++		lprops->flags |= ubifs_categorize_lprops(c, lprops);
++	}
++	err = check_lpt_crc(buf, c->pnode_sz);
++	return err;
++}
++
++/**
++ * unpack_nnode - unpack a nnode.
++ * @c: UBIFS file-system description object
++ * @buf: buffer containing packed nnode to unpack
++ * @nnode: nnode structure to fill
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int unpack_nnode(struct ubifs_info *c, void *buf,
++			struct ubifs_nnode *nnode)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int i, pos = 0, err;
++
++	err = check_lpt_type(&addr, &pos, UBIFS_LPT_NNODE);
++	if (err)
++		return err;
++	if (c->big_lpt)
++		nnode->num = ubifs_unpack_bits(&addr, &pos, c->pcnt_bits);
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		int lnum;
++
++		lnum = ubifs_unpack_bits(&addr, &pos, c->lpt_lnum_bits) +
++		       c->lpt_first;
++		if (lnum == c->lpt_last + 1)
++			lnum = 0;
++		nnode->nbranch[i].lnum = lnum;
++		nnode->nbranch[i].offs = ubifs_unpack_bits(&addr, &pos,
++						     c->lpt_offs_bits);
++	}
++	err = check_lpt_crc(buf, c->nnode_sz);
++	return err;
++}
++
++/**
++ * unpack_ltab - unpack the LPT's own lprops table.
++ * @c: UBIFS file-system description object
++ * @buf: buffer from which to unpack
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int unpack_ltab(struct ubifs_info *c, void *buf)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int i, pos = 0, err;
++
++	err = check_lpt_type(&addr, &pos, UBIFS_LPT_LTAB);
++	if (err)
++		return err;
++	for (i = 0; i < c->lpt_lebs; i++) {
++		int free = ubifs_unpack_bits(&addr, &pos, c->lpt_spc_bits);
++		int dirty = ubifs_unpack_bits(&addr, &pos, c->lpt_spc_bits);
++
++		if (free < 0 || free > c->leb_size || dirty < 0 ||
++		    dirty > c->leb_size || free + dirty > c->leb_size)
++			return -EINVAL;
++
++		c->ltab[i].free = free;
++		c->ltab[i].dirty = dirty;
++		c->ltab[i].tgc = 0;
++		c->ltab[i].cmt = 0;
++	}
++	err = check_lpt_crc(buf, c->ltab_sz);
++	return err;
++}
++
++/**
++ * unpack_lsave - unpack the LPT's save table.
++ * @c: UBIFS file-system description object
++ * @buf: buffer from which to unpack
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int unpack_lsave(struct ubifs_info *c, void *buf)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int i, pos = 0, err;
++
++	err = check_lpt_type(&addr, &pos, UBIFS_LPT_LSAVE);
++	if (err)
++		return err;
++	for (i = 0; i < c->lsave_cnt; i++) {
++		int lnum = ubifs_unpack_bits(&addr, &pos, c->lnum_bits);
++
++		if (lnum < c->main_first || lnum >= c->leb_cnt)
++			return -EINVAL;
++		c->lsave[i] = lnum;
++	}
++	err = check_lpt_crc(buf, c->lsave_sz);
++	return err;
++}
++
++/**
++ * validate_nnode - validate a nnode.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode to validate
++ * @parent: parent nnode (or NULL for the root nnode)
++ * @iip: index in parent
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int validate_nnode(struct ubifs_info *c, struct ubifs_nnode *nnode,
++			  struct ubifs_nnode *parent, int iip)
++{
++	int i, lvl, max_offs;
++
++	if (c->big_lpt) {
++		int num = calc_nnode_num_from_parent(c, parent, iip);
++
++		if (nnode->num != num)
++			return -EINVAL;
++	}
++	lvl = parent ? parent->level - 1 : c->lpt_hght;
++	if (lvl < 1)
++		return -EINVAL;
++	if (lvl == 1)
++		max_offs = c->leb_size - c->pnode_sz;
++	else
++		max_offs = c->leb_size - c->nnode_sz;
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		int lnum = nnode->nbranch[i].lnum;
++		int offs = nnode->nbranch[i].offs;
++
++		if (lnum == 0) {
++			if (offs != 0)
++				return -EINVAL;
++			continue;
++		}
++		if (lnum < c->lpt_first || lnum > c->lpt_last)
++			return -EINVAL;
++		if (offs < 0 || offs > max_offs)
++			return -EINVAL;
++	}
++	return 0;
++}
++
++/**
++ * validate_pnode - validate a pnode.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode to validate
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int validate_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
++			  struct ubifs_nnode *parent, int iip)
++{
++	int i;
++
++	if (c->big_lpt) {
++		int num = calc_pnode_num_from_parent(c, parent, iip);
++
++		if (pnode->num != num)
++			return -EINVAL;
++	}
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		int free = pnode->lprops[i].free;
++		int dirty = pnode->lprops[i].dirty;
++
++		if (free < 0 || free > c->leb_size || free % c->min_io_size ||
++		    (free & 7))
++			return -EINVAL;
++		if (dirty < 0 || dirty > c->leb_size || (dirty & 7))
++			return -EINVAL;
++		if (dirty + free > c->leb_size)
++			return -EINVAL;
++	}
++	return 0;
++}
++
++/**
++ * set_pnode_lnum - set LEB numbers on a pnode.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode to update
++ *
++ * This function calculates the LEB numbers for the LEB properties it contains
++ * based on the pnode number.
++ */
++static void set_pnode_lnum(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++	int i, lnum;
++
++	lnum = (pnode->num << UBIFS_LPT_FANOUT_SHIFT) + c->main_first;
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		if (lnum >= c->leb_cnt)
++			return;
++		pnode->lprops[i].lnum = lnum++;
++	}
++}
++
++/**
++ * ubifs_read_nnode - read a nnode from flash and link it to the tree in memory.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode (or NULL for the root)
++ * @iip: index in parent
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_read_nnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip)
++{
++	struct ubifs_nbranch *branch = NULL;
++	struct ubifs_nnode *nnode = NULL;
++	void *buf = c->lpt_nod_buf;
++	int err, lnum, offs;
++
++	if (parent) {
++		branch = &parent->nbranch[iip];
++		lnum = branch->lnum;
++		offs = branch->offs;
++	} else {
++		lnum = c->lpt_lnum;
++		offs = c->lpt_offs;
++	}
++	nnode = kzalloc(sizeof(struct ubifs_nnode), GFP_NOFS);
++	if (!nnode) {
++		err = -ENOMEM;
++		goto out;
++	}
++	if (lnum == 0) {
++		/*
++		 * This nnode was not written which just means that the LEB
++		 * properties in the subtree below it describe empty LEBs. We
++		 * make the nnode as though we had read it, which in fact means
++		 * doing almost nothing.
++		 */
++		if (c->big_lpt)
++			nnode->num = calc_nnode_num_from_parent(c, parent, iip);
++	} else {
++		err = ubi_read(c->ubi, lnum, buf, offs, c->nnode_sz);
++		if (err)
++			goto out;
++		err = unpack_nnode(c, buf, nnode);
++		if (err)
++			goto out;
++	}
++	err = validate_nnode(c, nnode, parent, iip);
++	if (err)
++		goto out;
++	if (!c->big_lpt)
++		nnode->num = calc_nnode_num_from_parent(c, parent, iip);
++	if (parent) {
++		branch->nnode = nnode;
++		nnode->level = parent->level - 1;
++	} else {
++		c->nroot = nnode;
++		nnode->level = c->lpt_hght;
++	}
++	nnode->parent = parent;
++	nnode->iip = iip;
++	return 0;
++
++out:
++	ubifs_err("error %d reading nnode at %d:%d", err, lnum, offs);
++	kfree(nnode);
++	return err;
++}
++
++/**
++ * read_pnode - read a pnode from flash and link it to the tree in memory.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int read_pnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip)
++{
++	struct ubifs_nbranch *branch;
++	struct ubifs_pnode *pnode = NULL;
++	void *buf = c->lpt_nod_buf;
++	int err, lnum, offs;
++
++	branch = &parent->nbranch[iip];
++	lnum = branch->lnum;
++	offs = branch->offs;
++	pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_NOFS);
++	if (!pnode) {
++		err = -ENOMEM;
++		goto out;
++	}
++	if (lnum == 0) {
++		/*
++		 * This pnode was not written which just means that the LEB
++		 * properties in it describe empty LEBs. We make the pnode as
++		 * though we had read it.
++		 */
++		int i;
++
++		if (c->big_lpt)
++			pnode->num = calc_pnode_num_from_parent(c, parent, iip);
++		for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++			struct ubifs_lprops * const lprops = &pnode->lprops[i];
++
++			lprops->free = c->leb_size;
++			lprops->flags = ubifs_categorize_lprops(c, lprops);
++		}
++	} else {
++		err = ubi_read(c->ubi, lnum, buf, offs, c->pnode_sz);
++		if (err)
++			goto out;
++		err = unpack_pnode(c, buf, pnode);
++		if (err)
++			goto out;
++	}
++	err = validate_pnode(c, pnode, parent, iip);
++	if (err)
++		goto out;
++	if (!c->big_lpt)
++		pnode->num = calc_pnode_num_from_parent(c, parent, iip);
++	branch->pnode = pnode;
++	pnode->parent = parent;
++	pnode->iip = iip;
++	set_pnode_lnum(c, pnode);
++	c->pnodes_have += 1;
++	return 0;
++
++out:
++	ubifs_err("error %d reading pnode at %d:%d", err, lnum, offs);
++	dbg_dump_pnode(c, pnode, parent, iip);
++	dbg_msg("calc num: %d", calc_pnode_num_from_parent(c, parent, iip));
++	kfree(pnode);
++	return err;
++}
++
++/**
++ * read_ltab - read LPT's own lprops table.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int read_ltab(struct ubifs_info *c)
++{
++	int err;
++	void *buf;
++
++	buf = vmalloc(c->ltab_sz);
++	if (!buf)
++		return -ENOMEM;
++	err = ubi_read(c->ubi, c->ltab_lnum, buf, c->ltab_offs, c->ltab_sz);
++	if (err)
++		goto out;
++	err = unpack_ltab(c, buf);
++out:
++	vfree(buf);
++	return err;
++}
++
++/**
++ * read_lsave - read LPT's save table.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int read_lsave(struct ubifs_info *c)
++{
++	int err, i;
++	void *buf;
++
++	buf = vmalloc(c->lsave_sz);
++	if (!buf)
++		return -ENOMEM;
++	err = ubi_read(c->ubi, c->lsave_lnum, buf, c->lsave_offs, c->lsave_sz);
++	if (err)
++		goto out;
++	err = unpack_lsave(c, buf);
++	if (err)
++		goto out;
++	for (i = 0; i < c->lsave_cnt; i++) {
++		int lnum = c->lsave[i];
++
++		/*
++		 * Due to automatic resizing, the values in the lsave table
++		 * could be beyond the volume size - just ignore them.
++		 */
++		if (lnum >= c->leb_cnt)
++			continue;
++		ubifs_lpt_lookup(c, lnum);
++	}
++out:
++	vfree(buf);
++	return err;
++}
++
++/**
++ * ubifs_get_nnode - get a nnode.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode (or NULL for the root)
++ * @iip: index in parent
++ *
++ * This function returns a pointer to the nnode on success or a negative error
++ * code on failure.
++ */
++struct ubifs_nnode *ubifs_get_nnode(struct ubifs_info *c,
++				    struct ubifs_nnode *parent, int iip)
++{
++	struct ubifs_nbranch *branch;
++	struct ubifs_nnode *nnode;
++	int err;
++
++	branch = &parent->nbranch[iip];
++	nnode = branch->nnode;
++	if (nnode)
++		return nnode;
++	err = ubifs_read_nnode(c, parent, iip);
++	if (err)
++		return ERR_PTR(err);
++	return branch->nnode;
++}
++
++/**
++ * ubifs_get_pnode - get a pnode.
++ * @c: UBIFS file-system description object
++ * @parent: parent nnode
++ * @iip: index in parent
++ *
++ * This function returns a pointer to the pnode on success or a negative error
++ * code on failure.
++ */
++struct ubifs_pnode *ubifs_get_pnode(struct ubifs_info *c,
++				    struct ubifs_nnode *parent, int iip)
++{
++	struct ubifs_nbranch *branch;
++	struct ubifs_pnode *pnode;
++	int err;
++
++	branch = &parent->nbranch[iip];
++	pnode = branch->pnode;
++	if (pnode)
++		return pnode;
++	err = read_pnode(c, parent, iip);
++	if (err)
++		return ERR_PTR(err);
++	update_cats(c, branch->pnode);
++	return branch->pnode;
++}
++
++/**
++ * ubifs_lpt_lookup - lookup LEB properties in the LPT.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to lookup
++ *
++ * This function returns a pointer to the LEB properties on success or a
++ * negative error code on failure.
++ */
++struct ubifs_lprops *ubifs_lpt_lookup(struct ubifs_info *c, int lnum)
++{
++	int err, i, h, iip, shft;
++	struct ubifs_nnode *nnode;
++	struct ubifs_pnode *pnode;
++
++	if (!c->nroot) {
++		err = ubifs_read_nnode(c, NULL, 0);
++		if (err)
++			return ERR_PTR(err);
++	}
++	nnode = c->nroot;
++	i = lnum - c->main_first;
++	shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
++	for (h = 1; h < c->lpt_hght; h++) {
++		iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++		shft -= UBIFS_LPT_FANOUT_SHIFT;
++		nnode = ubifs_get_nnode(c, nnode, iip);
++		if (IS_ERR(nnode))
++			return ERR_PTR(PTR_ERR(nnode));
++	}
++	iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++	shft -= UBIFS_LPT_FANOUT_SHIFT;
++	pnode = ubifs_get_pnode(c, nnode, iip);
++	if (IS_ERR(pnode))
++		return ERR_PTR(PTR_ERR(pnode));
++	iip = (i & (UBIFS_LPT_FANOUT - 1));
++	dbg_lp("LEB %d, free %d, dirty %d, flags %d", lnum,
++	       pnode->lprops[iip].free, pnode->lprops[iip].dirty,
++	       pnode->lprops[iip].flags);
++	return &pnode->lprops[iip];
++}
++
++/**
++ * dirty_cow_nnode - ensure a nnode is not being committed.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode to check
++ *
++ * Returns dirtied nnode on success or negative error code on failure.
++ */
++static struct ubifs_nnode *dirty_cow_nnode(struct ubifs_info *c,
++					   struct ubifs_nnode *nnode)
++{
++	struct ubifs_nnode *n;
++	int i;
++
++	if (!test_bit(COW_CNODE, &nnode->flags)) {
++		/* nnode is not being committed */
++		if (!test_and_set_bit(DIRTY_CNODE, &nnode->flags)) {
++			c->dirty_nn_cnt += 1;
++			ubifs_add_nnode_dirt(c, nnode);
++		}
++		return nnode;
++	}
++
++	/* nnode is being committed, so copy it */
++	n = kmalloc(sizeof(struct ubifs_nnode), GFP_NOFS);
++	if (unlikely(!n))
++		return ERR_PTR(-ENOMEM);
++
++	memcpy(n, nnode, sizeof(struct ubifs_nnode));
++	n->cnext = NULL;
++	__set_bit(DIRTY_CNODE, &n->flags);
++	__clear_bit(COW_CNODE, &n->flags);
++
++	/* The children now have new parent */
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		struct ubifs_nbranch *branch = &n->nbranch[i];
++
++		if (branch->cnode)
++			branch->cnode->parent = n;
++	}
++
++	ubifs_assert(!test_bit(OBSOLETE_CNODE, &nnode->flags));
++	__set_bit(OBSOLETE_CNODE, &nnode->flags);
++
++	c->dirty_nn_cnt += 1;
++	ubifs_add_nnode_dirt(c, nnode);
++	if (nnode->parent)
++		nnode->parent->nbranch[n->iip].nnode = n;
++	else
++		c->nroot = n;
++	return n;
++}
++
++/**
++ * dirty_cow_pnode - ensure a pnode is not being committed.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode to check
++ *
++ * Returns dirtied pnode on success or negative error code on failure.
++ */
++static struct ubifs_pnode *dirty_cow_pnode(struct ubifs_info *c,
++					   struct ubifs_pnode *pnode)
++{
++	struct ubifs_pnode *p;
++
++	if (!test_bit(COW_CNODE, &pnode->flags)) {
++		/* pnode is not being committed */
++		if (!test_and_set_bit(DIRTY_CNODE, &pnode->flags)) {
++			c->dirty_pn_cnt += 1;
++			add_pnode_dirt(c, pnode);
++		}
++		return pnode;
++	}
++
++	/* pnode is being committed, so copy it */
++	p = kmalloc(sizeof(struct ubifs_pnode), GFP_NOFS);
++	if (unlikely(!p))
++		return ERR_PTR(-ENOMEM);
++
++	memcpy(p, pnode, sizeof(struct ubifs_pnode));
++	p->cnext = NULL;
++	__set_bit(DIRTY_CNODE, &p->flags);
++	__clear_bit(COW_CNODE, &p->flags);
++	replace_cats(c, pnode, p);
++
++	ubifs_assert(!test_bit(OBSOLETE_CNODE, &pnode->flags));
++	__set_bit(OBSOLETE_CNODE, &pnode->flags);
++
++	c->dirty_pn_cnt += 1;
++	add_pnode_dirt(c, pnode);
++	pnode->parent->nbranch[p->iip].pnode = p;
++	return p;
++}
++
++/**
++ * ubifs_lpt_lookup_dirty - lookup LEB properties in the LPT.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to lookup
++ *
++ * This function returns a pointer to the LEB properties on success or a
++ * negative error code on failure.
++ */
++struct ubifs_lprops *ubifs_lpt_lookup_dirty(struct ubifs_info *c, int lnum)
++{
++	int err, i, h, iip, shft;
++	struct ubifs_nnode *nnode;
++	struct ubifs_pnode *pnode;
++
++	if (!c->nroot) {
++		err = ubifs_read_nnode(c, NULL, 0);
++		if (err)
++			return ERR_PTR(err);
++	}
++	nnode = c->nroot;
++	nnode = dirty_cow_nnode(c, nnode);
++	if (IS_ERR(nnode))
++		return ERR_PTR(PTR_ERR(nnode));
++	i = lnum - c->main_first;
++	shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
++	for (h = 1; h < c->lpt_hght; h++) {
++		iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++		shft -= UBIFS_LPT_FANOUT_SHIFT;
++		nnode = ubifs_get_nnode(c, nnode, iip);
++		if (IS_ERR(nnode))
++			return ERR_PTR(PTR_ERR(nnode));
++		nnode = dirty_cow_nnode(c, nnode);
++		if (IS_ERR(nnode))
++			return ERR_PTR(PTR_ERR(nnode));
++	}
++	iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++	shft -= UBIFS_LPT_FANOUT_SHIFT;
++	pnode = ubifs_get_pnode(c, nnode, iip);
++	if (IS_ERR(pnode))
++		return ERR_PTR(PTR_ERR(pnode));
++	pnode = dirty_cow_pnode(c, pnode);
++	if (IS_ERR(pnode))
++		return ERR_PTR(PTR_ERR(pnode));
++	iip = (i & (UBIFS_LPT_FANOUT - 1));
++	dbg_lp("LEB %d, free %d, dirty %d, flags %d", lnum,
++	       pnode->lprops[iip].free, pnode->lprops[iip].dirty,
++	       pnode->lprops[iip].flags);
++	ubifs_assert(test_bit(DIRTY_CNODE, &pnode->flags));
++	return &pnode->lprops[iip];
++}
++
++/**
++ * lpt_init_rd - initialize the LPT for reading.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int lpt_init_rd(struct ubifs_info *c)
++{
++	int err, i;
++
++	c->ltab = vmalloc(sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs);
++	if (!c->ltab)
++		return -ENOMEM;
++
++	i = max_t(int, c->nnode_sz, c->pnode_sz);
++	c->lpt_nod_buf = kmalloc(i, GFP_KERNEL);
++	if (!c->lpt_nod_buf)
++		return -ENOMEM;
++
++	for (i = 0; i < LPROPS_HEAP_CNT; i++) {
++		c->lpt_heap[i].arr = kmalloc(sizeof(void *) * LPT_HEAP_SZ,
++					     GFP_KERNEL);
++		if (!c->lpt_heap[i].arr)
++			return -ENOMEM;
++		c->lpt_heap[i].cnt = 0;
++		c->lpt_heap[i].max_cnt = LPT_HEAP_SZ;
++	}
++
++	c->dirty_idx.arr = kmalloc(sizeof(void *) * LPT_HEAP_SZ, GFP_KERNEL);
++	if (!c->dirty_idx.arr)
++		return -ENOMEM;
++	c->dirty_idx.cnt = 0;
++	c->dirty_idx.max_cnt = LPT_HEAP_SZ;
++
++	err = read_ltab(c);
++	if (err)
++		return err;
++
++	dbg_lp("space_bits %d", c->space_bits);
++	dbg_lp("lpt_lnum_bits %d", c->lpt_lnum_bits);
++	dbg_lp("lpt_offs_bits %d", c->lpt_offs_bits);
++	dbg_lp("lpt_spc_bits %d", c->lpt_spc_bits);
++	dbg_lp("pcnt_bits %d", c->pcnt_bits);
++	dbg_lp("lnum_bits %d", c->lnum_bits);
++	dbg_lp("pnode_sz %d", c->pnode_sz);
++	dbg_lp("nnode_sz %d", c->nnode_sz);
++	dbg_lp("ltab_sz %d", c->ltab_sz);
++	dbg_lp("lsave_sz %d", c->lsave_sz);
++	dbg_lp("lsave_cnt %d", c->lsave_cnt);
++	dbg_lp("lpt_hght %d", c->lpt_hght);
++	dbg_lp("big_lpt %d", c->big_lpt);
++	dbg_lp("LPT root is at %d:%d", c->lpt_lnum, c->lpt_offs);
++	dbg_lp("LPT head is at %d:%d", c->nhead_lnum, c->nhead_offs);
++	dbg_lp("LPT ltab is at %d:%d", c->ltab_lnum, c->ltab_offs);
++	if (c->big_lpt)
++		dbg_lp("LPT lsave is at %d:%d", c->lsave_lnum, c->lsave_offs);
++
++	return 0;
++}
++
++/**
++ * lpt_init_wr - initialize the LPT for writing.
++ * @c: UBIFS file-system description object
++ *
++ * 'lpt_init_rd()' must have been called already.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int lpt_init_wr(struct ubifs_info *c)
++{
++	int err, i;
++
++	c->ltab_cmt = vmalloc(sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs);
++	if (!c->ltab_cmt)
++		return -ENOMEM;
++
++	c->lpt_buf = vmalloc(c->leb_size);
++	if (!c->lpt_buf)
++		return -ENOMEM;
++
++	if (c->big_lpt) {
++		c->lsave = kmalloc(sizeof(int) * c->lsave_cnt, GFP_NOFS);
++		if (!c->lsave)
++			return -ENOMEM;
++		err = read_lsave(c);
++		if (err)
++			return err;
++	}
++
++	for (i = 0; i < c->lpt_lebs; i++)
++		if (c->ltab[i].free == c->leb_size) {
++			err = ubifs_leb_unmap(c, i + c->lpt_first);
++			if (err)
++				return err;
++		}
++
++	return 0;
++}
++
++/**
++ * ubifs_lpt_init - initialize the LPT.
++ * @c: UBIFS file-system description object
++ * @rd: whether to initialize lpt for reading
++ * @wr: whether to initialize lpt for writing
++ *
++ * For mounting 'rw', @rd and @wr are both true. For mounting 'ro', @rd is true
++ * and @wr is false. For mounting from 'ro' to 'rw', @rd is false and @wr is
++ * true.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_lpt_init(struct ubifs_info *c, int rd, int wr)
++{
++	int err;
++
++	if (rd) {
++		err = lpt_init_rd(c);
++		if (err)
++			return err;
++	}
++
++	if (wr) {
++		err = lpt_init_wr(c);
++		if (err)
++			return err;
++	}
++
++	return 0;
++}
++
++/**
++ * struct lpt_scan_node - somewhere to put nodes while we scan LPT.
++ * @nnode: where to keep a nnode
++ * @pnode: where to keep a pnode
++ * @cnode: where to keep a cnode
++ * @in_tree: is the node in the tree in memory
++ * @ptr.nnode: pointer to the nnode (if it is an nnode) which may be here or in
++ * the tree
++ * @ptr.pnode: ditto for pnode
++ * @ptr.cnode: ditto for cnode
++ */
++struct lpt_scan_node {
++	union {
++		struct ubifs_nnode nnode;
++		struct ubifs_pnode pnode;
++		struct ubifs_cnode cnode;
++	};
++	int in_tree;
++	union {
++		struct ubifs_nnode *nnode;
++		struct ubifs_pnode *pnode;
++		struct ubifs_cnode *cnode;
++	} ptr;
++};
++
++/**
++ * scan_get_nnode - for the scan, get a nnode from either the tree or flash.
++ * @c: the UBIFS file-system description object
++ * @path: where to put the nnode
++ * @parent: parent of the nnode
++ * @iip: index in parent of the nnode
++ *
++ * This function returns a pointer to the nnode on success or a negative error
++ * code on failure.
++ */
++static struct ubifs_nnode *scan_get_nnode(struct ubifs_info *c,
++					  struct lpt_scan_node *path,
++					  struct ubifs_nnode *parent, int iip)
++{
++	struct ubifs_nbranch *branch;
++	struct ubifs_nnode *nnode;
++	void *buf = c->lpt_nod_buf;
++	int err;
++
++	branch = &parent->nbranch[iip];
++	nnode = branch->nnode;
++	if (nnode) {
++		path->in_tree = 1;
++		path->ptr.nnode = nnode;
++		return nnode;
++	}
++	nnode = &path->nnode;
++	path->in_tree = 0;
++	path->ptr.nnode = nnode;
++	memset(nnode, 0, sizeof(struct ubifs_nnode));
++	if (branch->lnum == 0) {
++		/*
++		 * This nnode was not written which just means that the LEB
++		 * properties in the subtree below it describe empty LEBs. We
++		 * make the nnode as though we had read it, which in fact means
++		 * doing almost nothing.
++		 */
++		if (c->big_lpt)
++			nnode->num = calc_nnode_num_from_parent(c, parent, iip);
++	} else {
++		err = ubi_read(c->ubi, branch->lnum, buf, branch->offs,
++			       c->nnode_sz);
++		if (err)
++			return ERR_PTR(err);
++		err = unpack_nnode(c, buf, nnode);
++		if (err)
++			return ERR_PTR(err);
++	}
++	err = validate_nnode(c, nnode, parent, iip);
++	if (err)
++		return ERR_PTR(err);
++	if (!c->big_lpt)
++		nnode->num = calc_nnode_num_from_parent(c, parent, iip);
++	nnode->level = parent->level - 1;
++	nnode->parent = parent;
++	nnode->iip = iip;
++	return nnode;
++}
++
++/**
++ * scan_get_pnode - for the scan, get a pnode from either the tree or flash.
++ * @c: the UBIFS file-system description object
++ * @path: where to put the pnode
++ * @parent: parent of the pnode
++ * @iip: index in parent of the pnode
++ *
++ * This function returns a pointer to the pnode on success or a negative error
++ * code on failure.
++ */
++static struct ubifs_pnode *scan_get_pnode(struct ubifs_info *c,
++					  struct lpt_scan_node *path,
++					  struct ubifs_nnode *parent, int iip)
++{
++	struct ubifs_nbranch *branch;
++	struct ubifs_pnode *pnode;
++	void *buf = c->lpt_nod_buf;
++	int err;
++
++	branch = &parent->nbranch[iip];
++	pnode = branch->pnode;
++	if (pnode) {
++		path->in_tree = 1;
++		path->ptr.pnode = pnode;
++		return pnode;
++	}
++	pnode = &path->pnode;
++	path->in_tree = 0;
++	path->ptr.pnode = pnode;
++	memset(pnode, 0, sizeof(struct ubifs_pnode));
++	if (branch->lnum == 0) {
++		/*
++		 * This pnode was not written which just means that the LEB
++		 * properties in it describe empty LEBs. We make the pnode as
++		 * though we had read it.
++		 */
++		int i;
++
++		if (c->big_lpt)
++			pnode->num = calc_pnode_num_from_parent(c, parent, iip);
++		for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++			struct ubifs_lprops * const lprops = &pnode->lprops[i];
++
++			lprops->free = c->leb_size;
++			lprops->flags = ubifs_categorize_lprops(c, lprops);
++		}
++	} else {
++		ubifs_assert(branch->lnum >= c->lpt_first &&
++			     branch->lnum <= c->lpt_last);
++		ubifs_assert(branch->offs >= 0 && branch->offs < c->leb_size);
++		err = ubi_read(c->ubi, branch->lnum, buf, branch->offs,
++			       c->pnode_sz);
++		if (err)
++			return ERR_PTR(err);
++		err = unpack_pnode(c, buf, pnode);
++		if (err)
++			return ERR_PTR(err);
++	}
++	err = validate_pnode(c, pnode, parent, iip);
++	if (err)
++		return ERR_PTR(err);
++	if (!c->big_lpt)
++		pnode->num = calc_pnode_num_from_parent(c, parent, iip);
++	pnode->parent = parent;
++	pnode->iip = iip;
++	set_pnode_lnum(c, pnode);
++	return pnode;
++}
++
++/**
++ * ubifs_lpt_scan_nolock - scan the LPT.
++ * @c: the UBIFS file-system description object
++ * @start_lnum: LEB number from which to start scanning
++ * @end_lnum: LEB number at which to stop scanning
++ * @scan_cb: callback function called for each lprops
++ * @data: data to be passed to the callback function
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_lpt_scan_nolock(struct ubifs_info *c, int start_lnum, int end_lnum,
++			  ubifs_lpt_scan_callback scan_cb, void *data)
++{
++	int err = 0, i, h, iip, shft;
++	struct ubifs_nnode *nnode;
++	struct ubifs_pnode *pnode;
++	struct lpt_scan_node *path;
++
++	if (start_lnum == -1) {
++		start_lnum = end_lnum + 1;
++		if (start_lnum >= c->leb_cnt)
++			start_lnum = c->main_first;
++	}
++
++	ubifs_assert(start_lnum >= c->main_first && start_lnum < c->leb_cnt);
++	ubifs_assert(end_lnum >= c->main_first && end_lnum < c->leb_cnt);
++
++	if (!c->nroot) {
++		err = ubifs_read_nnode(c, NULL, 0);
++		if (err)
++			return err;
++	}
++
++	path = kmalloc(sizeof(struct lpt_scan_node) * (c->lpt_hght + 1),
++		       GFP_NOFS);
++	if (!path)
++		return -ENOMEM;
++
++	path[0].ptr.nnode = c->nroot;
++	path[0].in_tree = 1;
++again:
++	/* Descend to the pnode containing start_lnum */
++	nnode = c->nroot;
++	i = start_lnum - c->main_first;
++	shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
++	for (h = 1; h < c->lpt_hght; h++) {
++		iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++		shft -= UBIFS_LPT_FANOUT_SHIFT;
++		nnode = scan_get_nnode(c, path + h, nnode, iip);
++		if (IS_ERR(nnode)) {
++			err = PTR_ERR(nnode);
++			goto out;
++		}
++	}
++	iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++	shft -= UBIFS_LPT_FANOUT_SHIFT;
++	pnode = scan_get_pnode(c, path + h, nnode, iip);
++	if (IS_ERR(pnode)) {
++		err = PTR_ERR(pnode);
++		goto out;
++	}
++	iip = (i & (UBIFS_LPT_FANOUT - 1));
++
++	/* Loop for each lprops */
++	while (1) {
++		struct ubifs_lprops *lprops = &pnode->lprops[iip];
++		int ret, lnum = lprops->lnum;
++
++		ret = scan_cb(c, lprops, path[h].in_tree, data);
++		if (ret < 0) {
++			err = ret;
++			goto out;
++		}
++		if (ret & LPT_SCAN_ADD) {
++			/* Add all the nodes in path to the tree in memory */
++			for (h = 1; h < c->lpt_hght; h++) {
++				const size_t sz = sizeof(struct ubifs_nnode);
++				struct ubifs_nnode *parent;
++
++				if (path[h].in_tree)
++					continue;
++				nnode = kmalloc(sz, GFP_NOFS);
++				if (!nnode) {
++					err = -ENOMEM;
++					goto out;
++				}
++				memcpy(nnode, &path[h].nnode, sz);
++				parent = nnode->parent;
++				parent->nbranch[nnode->iip].nnode = nnode;
++				path[h].ptr.nnode = nnode;
++				path[h].in_tree = 1;
++				path[h + 1].cnode.parent = nnode;
++			}
++			if (path[h].in_tree)
++				ubifs_ensure_cat(c, lprops);
++			else {
++				const size_t sz = sizeof(struct ubifs_pnode);
++				struct ubifs_nnode *parent;
++
++				pnode = kmalloc(sz, GFP_NOFS);
++				if (!pnode) {
++					err = -ENOMEM;
++					goto out;
++				}
++				memcpy(pnode, &path[h].pnode, sz);
++				parent = pnode->parent;
++				parent->nbranch[pnode->iip].pnode = pnode;
++				path[h].ptr.pnode = pnode;
++				path[h].in_tree = 1;
++				update_cats(c, pnode);
++				c->pnodes_have += 1;
++			}
++			err = dbg_check_lpt_nodes(c, (struct ubifs_cnode *)
++						  c->nroot, 0, 0);
++			if (err)
++				goto out;
++			err = dbg_check_cats(c);
++			if (err)
++				goto out;
++		}
++		if (ret & LPT_SCAN_STOP) {
++			err = 0;
++			break;
++		}
++		/* Get the next lprops */
++		if (lnum == end_lnum) {
++			/*
++			 * We got to the end without finding what we were
++			 * looking for
++			 */
++			err = -ENOSPC;
++			goto out;
++		}
++		if (lnum + 1 >= c->leb_cnt) {
++			/* Wrap-around to the beginning */
++			start_lnum = c->main_first;
++			goto again;
++		}
++		if (iip + 1 < UBIFS_LPT_FANOUT) {
++			/* Next lprops is in the same pnode */
++			iip += 1;
++			continue;
++		}
++		/* We need to get the next pnode. Go up until we can go right */
++		iip = pnode->iip;
++		while (1) {
++			h -= 1;
++			ubifs_assert(h >= 0);
++			nnode = path[h].ptr.nnode;
++			if (iip + 1 < UBIFS_LPT_FANOUT)
++				break;
++			iip = nnode->iip;
++		}
++		/* Go right */
++		iip += 1;
++		/* Descend to the pnode */
++		h += 1;
++		for (; h < c->lpt_hght; h++) {
++			nnode = scan_get_nnode(c, path + h, nnode, iip);
++			if (IS_ERR(nnode)) {
++				err = PTR_ERR(nnode);
++				goto out;
++			}
++			iip = 0;
++		}
++		pnode = scan_get_pnode(c, path + h, nnode, iip);
++		if (IS_ERR(pnode)) {
++			err = PTR_ERR(pnode);
++			goto out;
++		}
++		iip = 0;
++	}
++out:
++	kfree(path);
++	return err;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * dbg_chk_pnode - check a pnode.
++ * @c: the UBIFS file-system description object
++ * @pnode: pnode to check
++ * @col: pnode column
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int dbg_chk_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
++			 int col)
++{
++	int i;
++
++	if (pnode->num != col) {
++		dbg_err("pnode num %d expected %d parent num %d iip %d",
++			pnode->num, col, pnode->parent->num, pnode->iip);
++		return -EINVAL;
++	}
++	for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++		struct ubifs_lprops *lp, *lprops = &pnode->lprops[i];
++		int lnum = (pnode->num << UBIFS_LPT_FANOUT_SHIFT) + i +
++			   c->main_first;
++		int found, cat = lprops->flags & LPROPS_CAT_MASK;
++		struct ubifs_lpt_heap *heap;
++		struct list_head *list = NULL;
++
++		if (lnum >= c->leb_cnt)
++			continue;
++		if (lprops->lnum != lnum) {
++			dbg_err("bad LEB number %d expected %d",
++				lprops->lnum, lnum);
++			return -EINVAL;
++		}
++		if (lprops->flags & LPROPS_TAKEN) {
++			if (cat != LPROPS_UNCAT) {
++				dbg_err("LEB %d taken but not uncat %d",
++					lprops->lnum, cat);
++				return -EINVAL;
++			}
++			continue;
++		}
++		if (lprops->flags & LPROPS_INDEX) {
++			switch (cat) {
++			case LPROPS_UNCAT:
++			case LPROPS_DIRTY_IDX:
++			case LPROPS_FRDI_IDX:
++				break;
++			default:
++				dbg_err("LEB %d index but cat %d",
++					lprops->lnum, cat);
++				return -EINVAL;
++			}
++		} else {
++			switch (cat) {
++			case LPROPS_UNCAT:
++			case LPROPS_DIRTY:
++			case LPROPS_FREE:
++			case LPROPS_EMPTY:
++			case LPROPS_FREEABLE:
++				break;
++			default:
++				dbg_err("LEB %d not index but cat %d",
++					lprops->lnum, cat);
++				return -EINVAL;
++			}
++		}
++		switch (cat) {
++		case LPROPS_UNCAT:
++			list = &c->uncat_list;
++			break;
++		case LPROPS_EMPTY:
++			list = &c->empty_list;
++			break;
++		case LPROPS_FREEABLE:
++			list = &c->freeable_list;
++			break;
++		case LPROPS_FRDI_IDX:
++			list = &c->frdi_idx_list;
++			break;
++		}
++		found = 0;
++		switch (cat) {
++		case LPROPS_DIRTY:
++		case LPROPS_DIRTY_IDX:
++		case LPROPS_FREE:
++			heap = &c->lpt_heap[cat - 1];
++			if (lprops->hpos < heap->cnt &&
++			    heap->arr[lprops->hpos] == lprops)
++				found = 1;
++			break;
++		case LPROPS_UNCAT:
++		case LPROPS_EMPTY:
++		case LPROPS_FREEABLE:
++		case LPROPS_FRDI_IDX:
++			list_for_each_entry(lp, list, list)
++				if (lprops == lp) {
++					found = 1;
++					break;
++				}
++			break;
++		}
++		if (!found) {
++			dbg_err("LEB %d cat %d not found in cat heap/list",
++				lprops->lnum, cat);
++			return -EINVAL;
++		}
++		switch (cat) {
++		case LPROPS_EMPTY:
++			if (lprops->free != c->leb_size) {
++				dbg_err("LEB %d cat %d free %d dirty %d",
++					lprops->lnum, cat, lprops->free,
++					lprops->dirty);
++				return -EINVAL;
++			}
++		case LPROPS_FREEABLE:
++		case LPROPS_FRDI_IDX:
++			if (lprops->free + lprops->dirty != c->leb_size) {
++				dbg_err("LEB %d cat %d free %d dirty %d",
++					lprops->lnum, cat, lprops->free,
++					lprops->dirty);
++				return -EINVAL;
++			}
++		}
++	}
++	return 0;
++}
++
++/**
++ * dbg_check_lpt_nodes - check nnodes and pnodes.
++ * @c: the UBIFS file-system description object
++ * @cnode: next cnode (nnode or pnode) to check
++ * @row: row of cnode (root is zero)
++ * @col: column of cnode (leftmost is zero)
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode,
++			int row, int col)
++{
++	struct ubifs_nnode *nnode, *nn;
++	struct ubifs_cnode *cn;
++	int num, iip = 0, err;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_LPROPS))
++		return 0;
++
++	while (cnode) {
++		ubifs_assert(row >= 0);
++		nnode = cnode->parent;
++		if (cnode->level) {
++			/* cnode is a nnode */
++			num = calc_nnode_num(row, col);
++			if (cnode->num != num) {
++				dbg_err("nnode num %d expected %d "
++					"parent num %d iip %d", cnode->num, num,
++					(nnode ? nnode->num : 0), cnode->iip);
++				return -EINVAL;
++			}
++			nn = (struct ubifs_nnode *)cnode;
++			while (iip < UBIFS_LPT_FANOUT) {
++				cn = nn->nbranch[iip].cnode;
++				if (cn) {
++					/* Go down */
++					row += 1;
++					col <<= UBIFS_LPT_FANOUT_SHIFT;
++					col += iip;
++					iip = 0;
++					cnode = cn;
++					break;
++				}
++				/* Go right */
++				iip += 1;
++			}
++			if (iip < UBIFS_LPT_FANOUT)
++				continue;
++		} else {
++			struct ubifs_pnode *pnode;
++
++			/* cnode is a pnode */
++			pnode = (struct ubifs_pnode *)cnode;
++			err = dbg_chk_pnode(c, pnode, col);
++			if (err)
++				return err;
++		}
++		/* Go up and to the right */
++		row -= 1;
++		col >>= UBIFS_LPT_FANOUT_SHIFT;
++		iip = cnode->iip + 1;
++		cnode = (struct ubifs_cnode *)nnode;
++	}
++	return 0;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/lpt_commit.c avr32-2.6/fs/ubifs/lpt_commit.c
+--- linux-2.6.25.6/fs/ubifs/lpt_commit.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/lpt_commit.c	2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,1631 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements commit-related functionality of the LEB properties
++ * subsystem.
++ */
++
++#include <linux/crc16.h>
++#include "ubifs.h"
++
++/**
++ * first_dirty_cnode - find first dirty cnode.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode at which to start
++ *
++ * This function returns the first dirty cnode or %NULL if there is not one.
++ */
++static struct ubifs_cnode *first_dirty_cnode(struct ubifs_nnode *nnode)
++{
++	ubifs_assert(nnode);
++	while (1) {
++		int i, cont = 0;
++
++		for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++			struct ubifs_cnode *cnode;
++
++			cnode = nnode->nbranch[i].cnode;
++			if (cnode &&
++			    test_bit(DIRTY_CNODE, &cnode->flags)) {
++				if (cnode->level == 0)
++					return cnode;
++				nnode = (struct ubifs_nnode *)cnode;
++				cont = 1;
++				break;
++			}
++		}
++		if (!cont)
++			return (struct ubifs_cnode *)nnode;
++	}
++}
++
++/**
++ * next_dirty_cnode - find next dirty cnode.
++ * @cnode: cnode from which to begin searching
++ *
++ * This function returns the next dirty cnode or %NULL if there is not one.
++ */
++static struct ubifs_cnode *next_dirty_cnode(struct ubifs_cnode *cnode)
++{
++	struct ubifs_nnode *nnode;
++	int i;
++
++	ubifs_assert(cnode);
++	nnode = cnode->parent;
++	if (!nnode)
++		return NULL;
++	for (i = cnode->iip + 1; i < UBIFS_LPT_FANOUT; i++) {
++		cnode = nnode->nbranch[i].cnode;
++		if (cnode && test_bit(DIRTY_CNODE, &cnode->flags)) {
++			if (cnode->level == 0)
++				return cnode; /* cnode is a pnode */
++			/* cnode is a nnode */
++			return first_dirty_cnode((struct ubifs_nnode *)cnode);
++		}
++	}
++	return (struct ubifs_cnode *)nnode;
++}
++
++/**
++ * get_cnodes_to_commit - create list of dirty cnodes to commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns the number of cnodes to commit.
++ */
++static int get_cnodes_to_commit(struct ubifs_info *c)
++{
++	struct ubifs_cnode *cnode, *cnext;
++	int cnt = 0;
++
++	if (!c->nroot)
++		return 0;
++
++	if (!test_bit(DIRTY_CNODE, &c->nroot->flags))
++		return 0;
++
++	c->lpt_cnext = first_dirty_cnode(c->nroot);
++	cnode = c->lpt_cnext;
++	if (!cnode)
++		return 0;
++	cnt += 1;
++	while (1) {
++		ubifs_assert(!test_bit(COW_ZNODE, &cnode->flags));
++		__set_bit(COW_ZNODE, &cnode->flags);
++		cnext = next_dirty_cnode(cnode);
++		if (!cnext) {
++			cnode->cnext = c->lpt_cnext;
++			break;
++		}
++		cnode->cnext = cnext;
++		cnode = cnext;
++		cnt += 1;
++	}
++	dbg_cmt("committing %d cnodes", cnt);
++	dbg_lp("committing %d cnodes", cnt);
++	ubifs_assert(cnt == c->dirty_nn_cnt + c->dirty_pn_cnt);
++	return cnt;
++}
++
++/**
++ * upd_ltab - update LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @free: amount of free space
++ * @dirty: amount of dirty space to add
++ */
++static void upd_ltab(struct ubifs_info *c, int lnum, int free, int dirty)
++{
++	dbg_lp("LEB %d free %d dirty %d to %d +%d",
++	       lnum, c->ltab[lnum - c->lpt_first].free,
++	       c->ltab[lnum - c->lpt_first].dirty, free, dirty);
++	ubifs_assert(lnum >= c->lpt_first && lnum <= c->lpt_last);
++	c->ltab[lnum - c->lpt_first].free = free;
++	c->ltab[lnum - c->lpt_first].dirty += dirty;
++}
++
++/**
++ * alloc_lpt_leb - allocate an LPT LEB that is empty.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number is passed and returned here
++ *
++ * This function finds the next empty LEB in the ltab starting from @lnum. If a
++ * an empty LEB is found it is returned in @lnum and the function returns %0.
++ * Otherwise the function returns -ENOSPC.  Note however, that LPT is designed
++ * never to run out of space.
++ */
++static int alloc_lpt_leb(struct ubifs_info *c, int *lnum)
++{
++	int i, n;
++
++	n = *lnum - c->lpt_first + 1;
++	for (i = n; i < c->lpt_lebs; i++) {
++		if (c->ltab[i].tgc || c->ltab[i].cmt)
++			continue;
++		if (c->ltab[i].free == c->leb_size) {
++			c->ltab[i].cmt = 1;
++			*lnum = i + c->lpt_first;
++			return 0;
++		}
++	}
++
++	for (i = 0; i < n; i++) {
++		if (c->ltab[i].tgc || c->ltab[i].cmt)
++			continue;
++		if (c->ltab[i].free == c->leb_size) {
++			c->ltab[i].cmt = 1;
++			*lnum = i + c->lpt_first;
++			return 0;
++		}
++	}
++	dbg_err("last LEB %d", *lnum);
++	dump_stack();
++	return -ENOSPC;
++}
++
++/**
++ * layout_cnodes - layout cnodes for commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int layout_cnodes(struct ubifs_info *c)
++{
++	int lnum, offs, len, alen, done_lsave, done_ltab, err;
++	struct ubifs_cnode *cnode;
++
++	cnode = c->lpt_cnext;
++	if (!cnode)
++		return 0;
++	lnum = c->nhead_lnum;
++	offs = c->nhead_offs;
++	/* Try to place lsave and ltab nicely */
++	done_lsave = !c->big_lpt;
++	done_ltab = 0;
++	if (!done_lsave && offs + c->lsave_sz <= c->leb_size) {
++		done_lsave = 1;
++		c->lsave_lnum = lnum;
++		c->lsave_offs = offs;
++		offs += c->lsave_sz;
++	}
++
++	if (offs + c->ltab_sz <= c->leb_size) {
++		done_ltab = 1;
++		c->ltab_lnum = lnum;
++		c->ltab_offs = offs;
++		offs += c->ltab_sz;
++	}
++
++	do {
++		if (cnode->level) {
++			len = c->nnode_sz;
++			c->dirty_nn_cnt -= 1;
++		} else {
++			len = c->pnode_sz;
++			c->dirty_pn_cnt -= 1;
++		}
++		while (offs + len > c->leb_size) {
++			alen = ALIGN(offs, c->min_io_size);
++			upd_ltab(c, lnum, c->leb_size - alen, alen - offs);
++			err = alloc_lpt_leb(c, &lnum);
++			if (err)
++				return err;
++			offs = 0;
++			ubifs_assert(lnum >= c->lpt_first &&
++				     lnum <= c->lpt_last);
++			/* Try to place lsave and ltab nicely */
++			if (!done_lsave) {
++				done_lsave = 1;
++				c->lsave_lnum = lnum;
++				c->lsave_offs = offs;
++				offs += c->lsave_sz;
++				continue;
++			}
++			if (!done_ltab) {
++				done_ltab = 1;
++				c->ltab_lnum = lnum;
++				c->ltab_offs = offs;
++				offs += c->ltab_sz;
++				continue;
++			}
++			break;
++		}
++		if (cnode->parent) {
++			cnode->parent->nbranch[cnode->iip].lnum = lnum;
++			cnode->parent->nbranch[cnode->iip].offs = offs;
++		} else {
++			c->lpt_lnum = lnum;
++			c->lpt_offs = offs;
++		}
++		offs += len;
++		cnode = cnode->cnext;
++	} while (cnode && cnode != c->lpt_cnext);
++
++	/* Make sure to place LPT's save table */
++	if (!done_lsave) {
++		if (offs + c->lsave_sz > c->leb_size) {
++			alen = ALIGN(offs, c->min_io_size);
++			upd_ltab(c, lnum, c->leb_size - alen, alen - offs);
++			err = alloc_lpt_leb(c, &lnum);
++			if (err)
++				return err;
++			offs = 0;
++			ubifs_assert(lnum >= c->lpt_first &&
++				     lnum <= c->lpt_last);
++		}
++		done_lsave = 1;
++		c->lsave_lnum = lnum;
++		c->lsave_offs = offs;
++		offs += c->lsave_sz;
++	}
++
++	/* Make sure to place LPT's own lprops table */
++	if (!done_ltab) {
++		if (offs + c->ltab_sz > c->leb_size) {
++			alen = ALIGN(offs, c->min_io_size);
++			upd_ltab(c, lnum, c->leb_size - alen, alen - offs);
++			err = alloc_lpt_leb(c, &lnum);
++			if (err)
++				return err;
++			offs = 0;
++			ubifs_assert(lnum >= c->lpt_first &&
++				     lnum <= c->lpt_last);
++		}
++		done_ltab = 1;
++		c->ltab_lnum = lnum;
++		c->ltab_offs = offs;
++		offs += c->ltab_sz;
++	}
++
++	alen = ALIGN(offs, c->min_io_size);
++	upd_ltab(c, lnum, c->leb_size - alen, alen - offs);
++	return 0;
++}
++
++/**
++ * realloc_lpt_leb - allocate an LPT LEB that is empty.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number is passed and returned here
++ *
++ * This function duplicates exactly the results of the function alloc_lpt_leb.
++ * It is used during end commit to reallocate the same LEB numbers that were
++ * allocated by alloc_lpt_leb during start commit.
++ *
++ * This function finds the next LEB that was allocated by the alloc_lpt_leb
++ * function starting from @lnum. If a LEB is found it is returned in @lnum and
++ * the function returns %0. Otherwise the function returns -ENOSPC.
++ * Note however, that LPT is designed never to run out of space.
++ */
++static int realloc_lpt_leb(struct ubifs_info *c, int *lnum)
++{
++	int i, n;
++
++	n = *lnum - c->lpt_first + 1;
++	for (i = n; i < c->lpt_lebs; i++)
++		if (c->ltab[i].cmt) {
++			c->ltab[i].cmt = 0;
++			*lnum = i + c->lpt_first;
++			return 0;
++		}
++
++	for (i = 0; i < n; i++)
++		if (c->ltab[i].cmt) {
++			c->ltab[i].cmt = 0;
++			*lnum = i + c->lpt_first;
++			return 0;
++		}
++	dbg_err("last LEB %d", *lnum);
++	dump_stack();
++	return -ENOSPC;
++}
++
++/**
++ * write_cnodes - write cnodes for commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int write_cnodes(struct ubifs_info *c)
++{
++	int lnum, offs, len, from, err, wlen, alen, done_ltab, done_lsave;
++	struct ubifs_cnode *cnode;
++	void *buf = c->lpt_buf;
++
++	cnode = c->lpt_cnext;
++	if (!cnode)
++		return 0;
++	lnum = c->nhead_lnum;
++	offs = c->nhead_offs;
++	from = offs;
++	/* Ensure empty LEB is unmapped */
++	if (offs == 0) {
++		err = ubifs_leb_unmap(c, lnum);
++		if (err)
++			return err;
++	}
++	/* Try to place lsave and ltab nicely */
++	done_lsave = !c->big_lpt;
++	done_ltab = 0;
++	if (!done_lsave && offs + c->lsave_sz <= c->leb_size) {
++		done_lsave = 1;
++		ubifs_pack_lsave(c, buf + offs, c->lsave);
++		offs += c->lsave_sz;
++	}
++
++	if (offs + c->ltab_sz <= c->leb_size) {
++		done_ltab = 1;
++		ubifs_pack_ltab(c, buf + offs, c->ltab_cmt);
++		offs += c->ltab_sz;
++	}
++
++	/* Loop for each cnode */
++	do {
++		if (cnode->level)
++			len = c->nnode_sz;
++		else
++			len = c->pnode_sz;
++		while (offs + len > c->leb_size) {
++			wlen = offs - from;
++			if (wlen) {
++				alen = ALIGN(wlen, c->min_io_size);
++				memset(buf + offs, 0xff, alen - wlen);
++				err = ubifs_leb_write(c, lnum, buf + from, from,
++						       alen, UBI_SHORTTERM);
++				if (err)
++					return err;
++			}
++			err = realloc_lpt_leb(c, &lnum);
++			if (err)
++				return err;
++			offs = 0;
++			from = 0;
++			ubifs_assert(lnum >= c->lpt_first &&
++				     lnum <= c->lpt_last);
++			err = ubifs_leb_unmap(c, lnum);
++			if (err)
++				return err;
++			/* Try to place lsave and ltab nicely */
++			if (!done_lsave) {
++				done_lsave = 1;
++				ubifs_pack_lsave(c, buf + offs, c->lsave);
++				offs += c->lsave_sz;
++				continue;
++			}
++			if (!done_ltab) {
++				done_ltab = 1;
++				ubifs_pack_ltab(c, buf + offs, c->ltab_cmt);
++				offs += c->ltab_sz;
++				continue;
++			}
++			break;
++		}
++		if (cnode->level)
++			ubifs_pack_nnode(c, buf + offs,
++					 (struct ubifs_nnode *)cnode);
++		else
++			ubifs_pack_pnode(c, buf + offs,
++					 (struct ubifs_pnode *)cnode);
++		/*
++		 * The reason for the barriers is the same as in case of TNC.
++		 * See comment in 'write_index()'. 'dirty_cow_nnode()' and
++		 * 'dirty_cow_pnode()' are the functions for which this is
++		 * important.
++		 */
++		clear_bit(DIRTY_CNODE, &cnode->flags);
++		smp_mb__before_clear_bit();
++		clear_bit(COW_ZNODE, &cnode->flags);
++		smp_mb__after_clear_bit();
++		offs += len;
++		cnode = cnode->cnext;
++	} while (cnode && cnode != c->lpt_cnext);
++
++	/* Make sure to place LPT's save table */
++	if (!done_lsave) {
++		if (offs + c->lsave_sz > c->leb_size) {
++			wlen = offs - from;
++			alen = ALIGN(wlen, c->min_io_size);
++			memset(buf + offs, 0xff, alen - wlen);
++			err = ubifs_leb_write(c, lnum, buf + from, from, alen,
++					      UBI_SHORTTERM);
++			if (err)
++				return err;
++			err = realloc_lpt_leb(c, &lnum);
++			if (err)
++				return err;
++			offs = 0;
++			ubifs_assert(lnum >= c->lpt_first &&
++				     lnum <= c->lpt_last);
++			err = ubifs_leb_unmap(c, lnum);
++			if (err)
++				return err;
++		}
++		done_lsave = 1;
++		ubifs_pack_lsave(c, buf + offs, c->lsave);
++		offs += c->lsave_sz;
++	}
++
++	/* Make sure to place LPT's own lprops table */
++	if (!done_ltab) {
++		if (offs + c->ltab_sz > c->leb_size) {
++			wlen = offs - from;
++			alen = ALIGN(wlen, c->min_io_size);
++			memset(buf + offs, 0xff, alen - wlen);
++			err = ubifs_leb_write(c, lnum, buf + from, from, alen,
++					      UBI_SHORTTERM);
++			if (err)
++				return err;
++			err = realloc_lpt_leb(c, &lnum);
++			if (err)
++				return err;
++			offs = 0;
++			ubifs_assert(lnum >= c->lpt_first &&
++				     lnum <= c->lpt_last);
++			err = ubifs_leb_unmap(c, lnum);
++			if (err)
++				return err;
++		}
++		done_ltab = 1;
++		ubifs_pack_ltab(c, buf + offs, c->ltab_cmt);
++		offs += c->ltab_sz;
++	}
++
++	/* Write remaining data in buffer */
++	wlen = offs - from;
++	alen = ALIGN(wlen, c->min_io_size);
++	memset(buf + offs, 0xff, alen - wlen);
++	err = ubifs_leb_write(c, lnum, buf + from, from, alen, UBI_SHORTTERM);
++	if (err)
++		return err;
++	c->nhead_lnum = lnum;
++	c->nhead_offs = ALIGN(offs, c->min_io_size);
++
++	dbg_lp("LPT root is at %d:%d", c->lpt_lnum, c->lpt_offs);
++	dbg_lp("LPT head is at %d:%d", c->nhead_lnum, c->nhead_offs);
++	dbg_lp("LPT ltab is at %d:%d", c->ltab_lnum, c->ltab_offs);
++	if (c->big_lpt)
++		dbg_lp("LPT lsave is at %d:%d", c->lsave_lnum, c->lsave_offs);
++	return 0;
++}
++
++/**
++ * next_pnode - find next pnode.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode
++ *
++ * This function returns the next pnode or %NULL if there are no more pnodes.
++ */
++static struct ubifs_pnode *next_pnode(struct ubifs_info *c,
++				      struct ubifs_pnode *pnode)
++{
++	struct ubifs_nnode *nnode;
++	int iip;
++
++	/* Try to go right */
++	nnode = pnode->parent;
++	iip = pnode->iip + 1;
++	if (iip < UBIFS_LPT_FANOUT) {
++		/* We assume here that LEB zero is never an LPT LEB */
++		if (nnode->nbranch[iip].lnum)
++			return ubifs_get_pnode(c, nnode, iip);
++		else
++			return NULL;
++	}
++
++	/* Go up while can't go right */
++	do {
++		iip = nnode->iip + 1;
++		nnode = nnode->parent;
++		if (!nnode)
++			return NULL;
++		/* We assume here that LEB zero is never an LPT LEB */
++	} while (iip >= UBIFS_LPT_FANOUT || !nnode->nbranch[iip].lnum);
++
++	/* Go right */
++	nnode = ubifs_get_nnode(c, nnode, iip);
++	if (IS_ERR(nnode))
++		return (void *)nnode;
++
++	/* Go down to level 1 */
++	while (nnode->level > 1) {
++		nnode = ubifs_get_nnode(c, nnode, 0);
++		if (IS_ERR(nnode))
++			return (void *)nnode;
++	}
++
++	return ubifs_get_pnode(c, nnode, 0);
++}
++
++/**
++ * pnode_lookup - lookup a pnode in the LPT.
++ * @c: UBIFS file-system description object
++ * @i: pnode number (0 to main_lebs - 1)
++ *
++ * This function returns a pointer to the pnode on success or a negative
++ * error code on failure.
++ */
++static struct ubifs_pnode *pnode_lookup(struct ubifs_info *c, int i)
++{
++	int err, h, iip, shft;
++	struct ubifs_nnode *nnode;
++
++	if (!c->nroot) {
++		err = ubifs_read_nnode(c, NULL, 0);
++		if (err)
++			return ERR_PTR(err);
++	}
++	i <<= UBIFS_LPT_FANOUT_SHIFT;
++	nnode = c->nroot;
++	shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
++	for (h = 1; h < c->lpt_hght; h++) {
++		iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++		shft -= UBIFS_LPT_FANOUT_SHIFT;
++		nnode = ubifs_get_nnode(c, nnode, iip);
++		if (IS_ERR(nnode))
++			return ERR_PTR(PTR_ERR(nnode));
++	}
++	iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
++	return ubifs_get_pnode(c, nnode, iip);
++}
++
++/**
++ * add_pnode_dirt - add dirty space to LPT LEB properties.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode for which to add dirt
++ */
++static void add_pnode_dirt(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++	ubifs_add_lpt_dirt(c, pnode->parent->nbranch[pnode->iip].lnum,
++			   c->pnode_sz);
++}
++
++/**
++ * do_make_pnode_dirty - mark a pnode dirty.
++ * @c: UBIFS file-system description object
++ * @pnode: pnode to mark dirty
++ */
++static void do_make_pnode_dirty(struct ubifs_info *c, struct ubifs_pnode *pnode)
++{
++	/* Assumes cnext list is empty i.e. not called during commit */
++	if (!test_and_set_bit(DIRTY_CNODE, &pnode->flags)) {
++		struct ubifs_nnode *nnode;
++
++		c->dirty_pn_cnt += 1;
++		add_pnode_dirt(c, pnode);
++		/* Mark parent and ancestors dirty too */
++		nnode = pnode->parent;
++		while (nnode) {
++			if (!test_and_set_bit(DIRTY_CNODE, &nnode->flags)) {
++				c->dirty_nn_cnt += 1;
++				ubifs_add_nnode_dirt(c, nnode);
++				nnode = nnode->parent;
++			} else
++				break;
++		}
++	}
++}
++
++/**
++ * make_tree_dirty - mark the entire LEB properties tree dirty.
++ * @c: UBIFS file-system description object
++ *
++ * This function is used by the "small" LPT model to cause the entire LEB
++ * properties tree to be written.  The "small" LPT model does not use LPT
++ * garbage collection because it is more efficient to write the entire tree
++ * (because it is small).
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_tree_dirty(struct ubifs_info *c)
++{
++	struct ubifs_pnode *pnode;
++
++	pnode = pnode_lookup(c, 0);
++	while (pnode) {
++		do_make_pnode_dirty(c, pnode);
++		pnode = next_pnode(c, pnode);
++		if (IS_ERR(pnode))
++			return PTR_ERR(pnode);
++	}
++	return 0;
++}
++
++/**
++ * need_write_all - determine if the LPT area is running out of free space.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %1 if the LPT area is running out of free space and %0
++ * if it is not.
++ */
++static int need_write_all(struct ubifs_info *c)
++{
++	long long free = 0;
++	int i;
++
++	for (i = 0; i < c->lpt_lebs; i++) {
++		if (i + c->lpt_first == c->nhead_lnum)
++			free += c->leb_size - c->nhead_offs;
++		else if (c->ltab[i].free == c->leb_size)
++			free += c->leb_size;
++		else if (c->ltab[i].free + c->ltab[i].dirty == c->leb_size)
++			free += c->leb_size;
++	}
++	/* Less than twice the size left */
++	if (free <= c->lpt_sz * 2)
++		return 1;
++	return 0;
++}
++
++/**
++ * lpt_tgc_start - start trivial garbage collection of LPT LEBs.
++ * @c: UBIFS file-system description object
++ *
++ * LPT trivial garbage collection is where a LPT LEB contains only dirty and
++ * free space and so may be reused as soon as the next commit is completed.
++ * This function is called during start commit to mark LPT LEBs for trivial GC.
++ */
++static void lpt_tgc_start(struct ubifs_info *c)
++{
++	int i;
++
++	for (i = 0; i < c->lpt_lebs; i++) {
++		if (i + c->lpt_first == c->nhead_lnum)
++			continue;
++		if (c->ltab[i].dirty > 0 &&
++		    c->ltab[i].free + c->ltab[i].dirty == c->leb_size) {
++			c->ltab[i].tgc = 1;
++			c->ltab[i].free = c->leb_size;
++			c->ltab[i].dirty = 0;
++			dbg_lp("LEB %d", i + c->lpt_first);
++		}
++	}
++}
++
++/**
++ * lpt_tgc_end - end trivial garbage collection of LPT LEBs.
++ * @c: UBIFS file-system description object
++ *
++ * LPT trivial garbage collection is where a LPT LEB contains only dirty and
++ * free space and so may be reused as soon as the next commit is completed.
++ * This function is called after the commit is completed (master node has been
++ * written) and unmaps LPT LEBs that were marked for trivial GC.
++ */
++static int lpt_tgc_end(struct ubifs_info *c)
++{
++	int i, err;
++
++	for (i = 0; i < c->lpt_lebs; i++)
++		if (c->ltab[i].tgc) {
++			err = ubifs_leb_unmap(c, i + c->lpt_first);
++			if (err)
++				return err;
++			c->ltab[i].tgc = 0;
++			dbg_lp("LEB %d", i + c->lpt_first);
++		}
++	return 0;
++}
++
++/**
++ * populate_lsave - fill the lsave array with important LEB numbers.
++ * @c: the UBIFS file-system description object
++ *
++ * This function is only called for the "big" model. It records a small number
++ * of LEB numbers of important LEBs.  Important LEBs are ones that are (from
++ * most important to least important): empty, freeable, freeable index, dirty
++ * index, dirty or free. Upon mount, we read this list of LEB numbers and bring
++ * their pnodes into memory.  That will stop us from having to scan the LPT
++ * straight away. For the "small" model we assume that scanning the LPT is no
++ * big deal.
++ */
++static void populate_lsave(struct ubifs_info *c)
++{
++	struct ubifs_lprops *lprops;
++	struct ubifs_lpt_heap *heap;
++	int i, cnt = 0;
++
++	ubifs_assert(c->big_lpt);
++	if (!(c->lpt_drty_flgs & LSAVE_DIRTY)) {
++		c->lpt_drty_flgs |= LSAVE_DIRTY;
++		ubifs_add_lpt_dirt(c, c->lsave_lnum, c->lsave_sz);
++	}
++	list_for_each_entry(lprops, &c->empty_list, list) {
++		c->lsave[cnt++] = lprops->lnum;
++		if (cnt >= c->lsave_cnt)
++			return;
++	}
++	list_for_each_entry(lprops, &c->freeable_list, list) {
++		c->lsave[cnt++] = lprops->lnum;
++		if (cnt >= c->lsave_cnt)
++			return;
++	}
++	list_for_each_entry(lprops, &c->frdi_idx_list, list) {
++		c->lsave[cnt++] = lprops->lnum;
++		if (cnt >= c->lsave_cnt)
++			return;
++	}
++	heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
++	for (i = 0; i < heap->cnt; i++) {
++		c->lsave[cnt++] = heap->arr[i]->lnum;
++		if (cnt >= c->lsave_cnt)
++			return;
++	}
++	heap = &c->lpt_heap[LPROPS_DIRTY - 1];
++	for (i = 0; i < heap->cnt; i++) {
++		c->lsave[cnt++] = heap->arr[i]->lnum;
++		if (cnt >= c->lsave_cnt)
++			return;
++	}
++	heap = &c->lpt_heap[LPROPS_FREE - 1];
++	for (i = 0; i < heap->cnt; i++) {
++		c->lsave[cnt++] = heap->arr[i]->lnum;
++		if (cnt >= c->lsave_cnt)
++			return;
++	}
++	/* Fill it up completely */
++	while (cnt < c->lsave_cnt)
++		c->lsave[cnt++] = c->main_first;
++}
++
++/**
++ * ubifs_lpt_start_commit - UBIFS commit starts.
++ * @c: the UBIFS file-system description object
++ *
++ * This function has to be called when UBIFS starts the commit operation.
++ * This function "freezes" all currently dirty LEB properties and does not
++ * change them anymore. Further changes are saved and tracked separately
++ * because they are not part of this commit. This function returns zero in case
++ * of success and a negative error code in case of failure.
++ */
++int ubifs_lpt_start_commit(struct ubifs_info *c)
++{
++	int err, cnt;
++
++	dbg_lp("");
++
++	mutex_lock(&c->lp_mutex);
++	err = dbg_check_ltab(c);
++	if (err)
++		goto out;
++
++	lpt_tgc_start(c);
++
++	if (!c->dirty_pn_cnt) {
++		dbg_cmt("no cnodes to commit");
++		err = 0;
++		goto out;
++	}
++
++	if (!c->big_lpt && need_write_all(c)) {
++		/* If needed, write everything */
++		err = make_tree_dirty(c);
++		if (err)
++			goto out;
++		lpt_tgc_start(c);
++	}
++
++	if (c->big_lpt)
++		populate_lsave(c);
++
++	cnt = get_cnodes_to_commit(c);
++	ubifs_assert(cnt != 0);
++
++	err = layout_cnodes(c);
++	if (err)
++		goto out;
++
++	/* Copy the LPT's own lprops for end commit to write */
++	memcpy(c->ltab_cmt, c->ltab,
++	       sizeof(struct ubifs_lpt_lprops) * c->lpt_lebs);
++	c->lpt_drty_flgs &= ~(LTAB_DIRTY | LSAVE_DIRTY);
++
++out:
++	mutex_unlock(&c->lp_mutex);
++	return err;
++}
++
++/**
++ * free_obsolete_cnodes - free obsolete cnodes for commit end.
++ * @c: UBIFS file-system description object
++ */
++static void free_obsolete_cnodes(struct ubifs_info *c)
++{
++	struct ubifs_cnode *cnode, *cnext;
++
++	cnext = c->lpt_cnext;
++	if (!cnext)
++		return;
++	do {
++		cnode = cnext;
++		cnext = cnode->cnext;
++		if (test_bit(OBSOLETE_CNODE, &cnode->flags))
++			kfree(cnode);
++		else
++			cnode->cnext = NULL;
++	} while (cnext != c->lpt_cnext);
++	c->lpt_cnext = NULL;
++}
++
++/**
++ * ubifs_lpt_end_commit - finish the commit operation.
++ * @c: the UBIFS file-system description object
++ *
++ * This function has to be called when the commit operation finishes. It
++ * flushes the changes which were "frozen" by 'ubifs_lprops_start_commit()' to
++ * the media. Returns zero in case of success and a negative error code in case
++ * of failure.
++ */
++int ubifs_lpt_end_commit(struct ubifs_info *c)
++{
++	int err;
++
++	dbg_lp("");
++
++	if (!c->lpt_cnext)
++		return 0;
++
++	err = write_cnodes(c);
++	if (err)
++		return err;
++
++	mutex_lock(&c->lp_mutex);
++	free_obsolete_cnodes(c);
++	mutex_unlock(&c->lp_mutex);
++
++	return 0;
++}
++
++/**
++ * nnode_lookup - lookup a nnode in the LPT.
++ * @c: UBIFS file-system description object
++ * @i: nnode number
++ *
++ * This function returns a pointer to the nnode on success or a negative
++ * error code on failure.
++ */
++static struct ubifs_nnode *nnode_lookup(struct ubifs_info *c, int i)
++{
++	int err, iip;
++	struct ubifs_nnode *nnode;
++
++	if (!c->nroot) {
++		err = ubifs_read_nnode(c, NULL, 0);
++		if (err)
++			return ERR_PTR(err);
++	}
++	nnode = c->nroot;
++	while (1) {
++		iip = i & (UBIFS_LPT_FANOUT - 1);
++		i >>= UBIFS_LPT_FANOUT_SHIFT;
++		if (!i)
++			break;
++		nnode = ubifs_get_nnode(c, nnode, iip);
++		if (IS_ERR(nnode))
++			return nnode;
++	}
++	return nnode;
++}
++
++/**
++ * make_nnode_dirty - find a nnode and, if found, make it dirty.
++ * @c: UBIFS file-system description object
++ * @node_num: nnode number of nnode to make dirty
++ * @lnum: LEB number where nnode was written
++ * @offs: offset where nnode was written
++ *
++ * This function is used by LPT garbage collection.  LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1).  Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty.  The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_nnode_dirty(struct ubifs_info *c, int node_num, int lnum,
++			    int offs)
++{
++	struct ubifs_nnode *nnode;
++
++	nnode = nnode_lookup(c, node_num);
++	if (IS_ERR(nnode))
++		return PTR_ERR(nnode);
++	if (nnode->parent) {
++		struct ubifs_nbranch *branch;
++
++		branch = &nnode->parent->nbranch[nnode->iip];
++		if (branch->lnum != lnum || branch->offs != offs)
++			return 0; /* nnode is obsolete */
++	} else if (c->lpt_lnum != lnum || c->lpt_offs != offs)
++			return 0; /* nnode is obsolete */
++	/* Assumes cnext list is empty i.e. not called during commit */
++	if (!test_and_set_bit(DIRTY_CNODE, &nnode->flags)) {
++		c->dirty_nn_cnt += 1;
++		ubifs_add_nnode_dirt(c, nnode);
++		/* Mark parent and ancestors dirty too */
++		nnode = nnode->parent;
++		while (nnode) {
++			if (!test_and_set_bit(DIRTY_CNODE, &nnode->flags)) {
++				c->dirty_nn_cnt += 1;
++				ubifs_add_nnode_dirt(c, nnode);
++				nnode = nnode->parent;
++			} else
++				break;
++		}
++	}
++	return 0;
++}
++
++/**
++ * make_pnode_dirty - find a pnode and, if found, make it dirty.
++ * @c: UBIFS file-system description object
++ * @node_num: pnode number of pnode to make dirty
++ * @lnum: LEB number where pnode was written
++ * @offs: offset where pnode was written
++ *
++ * This function is used by LPT garbage collection.  LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1).  Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty.  The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_pnode_dirty(struct ubifs_info *c, int node_num, int lnum,
++			    int offs)
++{
++	struct ubifs_pnode *pnode;
++	struct ubifs_nbranch *branch;
++
++	pnode = pnode_lookup(c, node_num);
++	if (IS_ERR(pnode))
++		return PTR_ERR(pnode);
++	branch = &pnode->parent->nbranch[pnode->iip];
++	if (branch->lnum != lnum || branch->offs != offs)
++		return 0;
++	do_make_pnode_dirty(c, pnode);
++	return 0;
++}
++
++/**
++ * make_ltab_dirty - make ltab node dirty.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number where ltab was written
++ * @offs: offset where ltab was written
++ *
++ * This function is used by LPT garbage collection.  LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1).  Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty.  The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_ltab_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++	if (lnum != c->ltab_lnum || offs != c->ltab_offs)
++		return 0; /* This ltab node is obsolete */
++	if (!(c->lpt_drty_flgs & LTAB_DIRTY)) {
++		c->lpt_drty_flgs |= LTAB_DIRTY;
++		ubifs_add_lpt_dirt(c, c->ltab_lnum, c->ltab_sz);
++	}
++	return 0;
++}
++
++/**
++ * make_lsave_dirty - make lsave node dirty.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number where lsave was written
++ * @offs: offset where lsave was written
++ *
++ * This function is used by LPT garbage collection.  LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1).  Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty.  The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_lsave_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++	if (lnum != c->lsave_lnum || offs != c->lsave_offs)
++		return 0; /* This lsave node is obsolete */
++	if (!(c->lpt_drty_flgs & LSAVE_DIRTY)) {
++		c->lpt_drty_flgs |= LSAVE_DIRTY;
++		ubifs_add_lpt_dirt(c, c->lsave_lnum, c->lsave_sz);
++	}
++	return 0;
++}
++
++/**
++ * make_node_dirty - make node dirty.
++ * @c: UBIFS file-system description object
++ * @node_type: LPT node type
++ * @node_num: node number
++ * @lnum: LEB number where node was written
++ * @offs: offset where node was written
++ *
++ * This function is used by LPT garbage collection.  LPT garbage collection is
++ * used only for the "big" LPT model (c->big_lpt == 1).  Garbage collection
++ * simply involves marking all the nodes in the LEB being garbage-collected as
++ * dirty.  The dirty nodes are written next commit, after which the LEB is free
++ * to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int make_node_dirty(struct ubifs_info *c, int node_type, int node_num,
++			   int lnum, int offs)
++{
++	switch (node_type) {
++	case UBIFS_LPT_NNODE:
++		return make_nnode_dirty(c, node_num, lnum, offs);
++	case UBIFS_LPT_PNODE:
++		return make_pnode_dirty(c, node_num, lnum, offs);
++	case UBIFS_LPT_LTAB:
++		return make_ltab_dirty(c, lnum, offs);
++	case UBIFS_LPT_LSAVE:
++		return make_lsave_dirty(c, lnum, offs);
++	}
++	return -EINVAL;
++}
++
++/**
++ * get_lpt_node_len - return the length of a node based on its type.
++ * @c: UBIFS file-system description object
++ * @node_type: LPT node type
++ */
++static int get_lpt_node_len(struct ubifs_info *c, int node_type)
++{
++	switch (node_type) {
++	case UBIFS_LPT_NNODE:
++		return c->nnode_sz;
++	case UBIFS_LPT_PNODE:
++		return c->pnode_sz;
++	case UBIFS_LPT_LTAB:
++		return c->ltab_sz;
++	case UBIFS_LPT_LSAVE:
++		return c->lsave_sz;
++	}
++	return 0;
++}
++
++/**
++ * get_pad_len - return the length of padding in a buffer.
++ * @c: UBIFS file-system description object
++ * @buf: buffer
++ * @len: length of buffer
++ */
++static int get_pad_len(struct ubifs_info *c, uint8_t *buf, int len)
++{
++	int offs, pad_len;
++
++	if (c->min_io_size == 1)
++		return 0;
++	offs = c->leb_size - len;
++	pad_len = ALIGN(offs, c->min_io_size) - offs;
++	return pad_len;
++}
++
++/**
++ * get_lpt_node_type - return type (and node number) of a node in a buffer.
++ * @c: UBIFS file-system description object
++ * @buf: buffer
++ * @node_num: node number is returned here
++ */
++static int get_lpt_node_type(struct ubifs_info *c, uint8_t *buf, int *node_num)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int pos = 0, node_type;
++
++	node_type = ubifs_unpack_bits(&addr, &pos, UBIFS_LPT_TYPE_BITS);
++	*node_num = ubifs_unpack_bits(&addr, &pos, c->pcnt_bits);
++	return node_type;
++}
++
++/**
++ * is_a_node - determine if a buffer contains a node.
++ * @c: UBIFS file-system description object
++ * @buf: buffer
++ * @len: length of buffer
++ *
++ * This function returns %1 if the buffer contains a node or %0 if it does not.
++ */
++static int is_a_node(struct ubifs_info *c, uint8_t *buf, int len)
++{
++	uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES;
++	int pos = 0, node_type, node_len;
++	uint16_t crc, calc_crc;
++
++	node_type = ubifs_unpack_bits(&addr, &pos, UBIFS_LPT_TYPE_BITS);
++	if (node_type == UBIFS_LPT_NOT_A_NODE)
++		return 0;
++	node_len = get_lpt_node_len(c, node_type);
++	if (!node_len || node_len > len)
++		return 0;
++	pos = 0;
++	addr = buf;
++	crc = ubifs_unpack_bits(&addr, &pos, UBIFS_LPT_CRC_BITS);
++	calc_crc = crc16(-1, buf + UBIFS_LPT_CRC_BYTES,
++			 node_len - UBIFS_LPT_CRC_BYTES);
++	if (crc != calc_crc)
++		return 0;
++	return 1;
++}
++
++
++/**
++ * lpt_gc_lnum - garbage collect a LPT LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to garbage collect
++ *
++ * LPT garbage collection is used only for the "big" LPT model
++ * (c->big_lpt == 1).  Garbage collection simply involves marking all the nodes
++ * in the LEB being garbage-collected as dirty.  The dirty nodes are written
++ * next commit, after which the LEB is free to be reused.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int lpt_gc_lnum(struct ubifs_info *c, int lnum)
++{
++	int err, len = c->leb_size, node_type, node_num, node_len, offs;
++	void *buf = c->lpt_buf;
++
++	dbg_lp("LEB %d", lnum);
++	err = ubi_read(c->ubi, lnum, buf, 0, c->leb_size);
++	if (err) {
++		ubifs_err("cannot read LEB %d, error %d", lnum, err);
++		return err;
++	}
++	while (1) {
++		if (!is_a_node(c, buf, len)) {
++			int pad_len;
++
++			pad_len = get_pad_len(c, buf, len);
++			if (pad_len) {
++				buf += pad_len;
++				len -= pad_len;
++				continue;
++			}
++			return 0;
++		}
++		node_type = get_lpt_node_type(c, buf, &node_num);
++		node_len = get_lpt_node_len(c, node_type);
++		offs = c->leb_size - len;
++		ubifs_assert(node_len != 0);
++		mutex_lock(&c->lp_mutex);
++		err = make_node_dirty(c, node_type, node_num, lnum, offs);
++		mutex_unlock(&c->lp_mutex);
++		if (err)
++			return err;
++		buf += node_len;
++		len -= node_len;
++	}
++	return 0;
++}
++
++/**
++ * lpt_gc - LPT garbage collection.
++ * @c: UBIFS file-system description object
++ *
++ * Select a LPT LEB for LPT garbage collection and call 'lpt_gc_lnum()'.
++ * Returns %0 on success and a negative error code on failure.
++ */
++static int lpt_gc(struct ubifs_info *c)
++{
++	int i, lnum = -1, dirty = 0;
++
++	mutex_lock(&c->lp_mutex);
++	for (i = 0; i < c->lpt_lebs; i++) {
++		ubifs_assert(!c->ltab[i].tgc);
++		if (i + c->lpt_first == c->nhead_lnum ||
++		    c->ltab[i].free + c->ltab[i].dirty == c->leb_size)
++			continue;
++		if (c->ltab[i].dirty > dirty) {
++			dirty = c->ltab[i].dirty;
++			lnum = i + c->lpt_first;
++		}
++	}
++	mutex_unlock(&c->lp_mutex);
++	if (lnum == -1)
++		return -ENOSPC;
++	return lpt_gc_lnum(c, lnum);
++}
++
++/**
++ * ubifs_lpt_post_commit - post commit LPT trivial GC and LPT GC.
++ * @c: UBIFS file-system description object
++ *
++ * LPT trivial GC is completed after a commit. Also LPT GC is done after a
++ * commit for the "big" LPT model.
++ */
++int ubifs_lpt_post_commit(struct ubifs_info *c)
++{
++	int err;
++
++	mutex_lock(&c->lp_mutex);
++	err = lpt_tgc_end(c);
++	if (err)
++		goto out;
++	if (c->big_lpt)
++		while (need_write_all(c)) {
++			mutex_unlock(&c->lp_mutex);
++			err = lpt_gc(c);
++			if (err)
++				return err;
++			mutex_lock(&c->lp_mutex);
++		}
++out:
++	mutex_unlock(&c->lp_mutex);
++	return err;
++}
++
++/**
++ * first_nnode - find the first nnode in memory.
++ * @c: UBIFS file-system description object
++ * @hght: height of tree where nnode found is returned here
++ *
++ * This function returns a pointer to the nnode found or %NULL if no nnode is
++ * found. This function is a helper to 'ubifs_lpt_free()'.
++ */
++static struct ubifs_nnode *first_nnode(struct ubifs_info *c, int *hght)
++{
++	struct ubifs_nnode *nnode;
++	int h, i, found;
++
++	nnode = c->nroot;
++	*hght = 0;
++	if (!nnode)
++		return NULL;
++	for (h = 1; h < c->lpt_hght; h++) {
++		found = 0;
++		for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++			if (nnode->nbranch[i].nnode) {
++				found = 1;
++				nnode = nnode->nbranch[i].nnode;
++				*hght = h;
++				break;
++			}
++		}
++		if (!found)
++			break;
++	}
++	return nnode;
++}
++
++/**
++ * next_nnode - find the next nnode in memory.
++ * @c: UBIFS file-system description object
++ * @nnode: nnode from which to start.
++ * @hght: height of tree where nnode is, is passed and returned here
++ *
++ * This function returns a pointer to the nnode found or %NULL if no nnode is
++ * found. This function is a helper to 'ubifs_lpt_free()'.
++ */
++static struct ubifs_nnode *next_nnode(struct ubifs_info *c,
++				      struct ubifs_nnode *nnode, int *hght)
++{
++	struct ubifs_nnode *parent;
++	int iip, h, i, found;
++
++	parent = nnode->parent;
++	if (!parent)
++		return NULL;
++	if (nnode->iip == UBIFS_LPT_FANOUT - 1) {
++		*hght -= 1;
++		return parent;
++	}
++	for (iip = nnode->iip + 1; iip < UBIFS_LPT_FANOUT; iip++) {
++		nnode = parent->nbranch[iip].nnode;
++		if (nnode)
++			break;
++	}
++	if (!nnode) {
++		*hght -= 1;
++		return parent;
++	}
++	for (h = *hght + 1; h < c->lpt_hght; h++) {
++		found = 0;
++		for (i = 0; i < UBIFS_LPT_FANOUT; i++) {
++			if (nnode->nbranch[i].nnode) {
++				found = 1;
++				nnode = nnode->nbranch[i].nnode;
++				*hght = h;
++				break;
++			}
++		}
++		if (!found)
++			break;
++	}
++	return nnode;
++}
++
++/**
++ * ubifs_lpt_free - free resources owned by the LPT.
++ * @c: UBIFS file-system description object
++ * @wr_only: free only resources used for writing
++ */
++void ubifs_lpt_free(struct ubifs_info *c, int wr_only)
++{
++	struct ubifs_nnode *nnode;
++	int i, hght;
++
++	/* Free write-only things first */
++
++	free_obsolete_cnodes(c); /* Leftover from a failed commit */
++
++	vfree(c->ltab_cmt);
++	c->ltab_cmt = NULL;
++	vfree(c->lpt_buf);
++	c->lpt_buf = NULL;
++	kfree(c->lsave);
++	c->lsave = NULL;
++
++	if (wr_only)
++		return;
++
++	/* Now free the rest */
++
++	nnode = first_nnode(c, &hght);
++	while (nnode) {
++		for (i = 0; i < UBIFS_LPT_FANOUT; i++)
++			kfree(nnode->nbranch[i].nnode);
++		nnode = next_nnode(c, nnode, &hght);
++	}
++	for (i = 0; i < LPROPS_HEAP_CNT; i++)
++		kfree(c->lpt_heap[i].arr);
++	kfree(c->dirty_idx.arr);
++	kfree(c->nroot);
++	vfree(c->ltab);
++	kfree(c->lpt_nod_buf);
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++/**
++ * dbg_is_all_ff - determine if a buffer contains only 0xff bytes.
++ * @buf: buffer
++ * @len: buffer length
++ */
++static int dbg_is_all_ff(uint8_t *buf, int len)
++{
++	int i;
++
++	for (i = 0; i < len; i++)
++		if (buf[i] != 0xff)
++			return 0;
++	return 1;
++}
++
++/**
++ * dbg_is_nnode_dirty - determine if a nnode is dirty.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where nnode was written
++ * @offs: offset where nnode was written
++ */
++static int dbg_is_nnode_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++	struct ubifs_nnode *nnode;
++	int hght;
++
++	/* Entire tree is in memory so first_nnode / next_nnode are ok */
++	nnode = first_nnode(c, &hght);
++	for (; nnode; nnode = next_nnode(c, nnode, &hght)) {
++		struct ubifs_nbranch *branch;
++
++		cond_resched();
++		if (nnode->parent) {
++			branch = &nnode->parent->nbranch[nnode->iip];
++			if (branch->lnum != lnum || branch->offs != offs)
++				continue;
++			if (test_bit(DIRTY_CNODE, &nnode->flags))
++				return 1;
++			return 0;
++		} else {
++			if (c->lpt_lnum != lnum || c->lpt_offs != offs)
++				continue;
++			if (test_bit(DIRTY_CNODE, &nnode->flags))
++				return 1;
++			return 0;
++		}
++	}
++	return 1;
++}
++
++/**
++ * dbg_is_pnode_dirty - determine if a pnode is dirty.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where pnode was written
++ * @offs: offset where pnode was written
++ */
++static int dbg_is_pnode_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++	int i, cnt;
++
++	cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT);
++	for (i = 0; i < cnt; i++) {
++		struct ubifs_pnode *pnode;
++		struct ubifs_nbranch *branch;
++
++		cond_resched();
++		pnode = pnode_lookup(c, i);
++		if (IS_ERR(pnode))
++			return PTR_ERR(pnode);
++		branch = &pnode->parent->nbranch[pnode->iip];
++		if (branch->lnum != lnum || branch->offs != offs)
++			continue;
++		if (test_bit(DIRTY_CNODE, &pnode->flags))
++			return 1;
++		return 0;
++	}
++	return 1;
++}
++
++/**
++ * dbg_is_ltab_dirty - determine if a ltab node is dirty.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where ltab node was written
++ * @offs: offset where ltab node was written
++ */
++static int dbg_is_ltab_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++	if (lnum != c->ltab_lnum || offs != c->ltab_offs)
++		return 1;
++	return (c->lpt_drty_flgs & LTAB_DIRTY) != 0;
++}
++
++/**
++ * dbg_is_lsave_dirty - determine if a lsave node is dirty.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where lsave node was written
++ * @offs: offset where lsave node was written
++ */
++static int dbg_is_lsave_dirty(struct ubifs_info *c, int lnum, int offs)
++{
++	if (lnum != c->lsave_lnum || offs != c->lsave_offs)
++		return 1;
++	return (c->lpt_drty_flgs & LSAVE_DIRTY) != 0;
++}
++
++/**
++ * dbg_is_node_dirty - determine if a node is dirty.
++ * @c: the UBIFS file-system description object
++ * @node_type: node type
++ * @lnum: LEB number where node was written
++ * @offs: offset where node was written
++ */
++static int dbg_is_node_dirty(struct ubifs_info *c, int node_type, int lnum,
++			     int offs)
++{
++	switch (node_type) {
++	case UBIFS_LPT_NNODE:
++		return dbg_is_nnode_dirty(c, lnum, offs);
++	case UBIFS_LPT_PNODE:
++		return dbg_is_pnode_dirty(c, lnum, offs);
++	case UBIFS_LPT_LTAB:
++		return dbg_is_ltab_dirty(c, lnum, offs);
++	case UBIFS_LPT_LSAVE:
++		return dbg_is_lsave_dirty(c, lnum, offs);
++	}
++	return 1;
++}
++
++/**
++ * dbg_check_ltab_lnum - check the ltab for a LPT LEB number.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB number where node was written
++ * @offs: offset where node was written
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int dbg_check_ltab_lnum(struct ubifs_info *c, int lnum)
++{
++	int err, len = c->leb_size, dirty = 0, node_type, node_num, node_len;
++	int ret;
++	void *buf = c->dbg_buf;
++
++	dbg_lp("LEB %d", lnum);
++	err = ubi_read(c->ubi, lnum, buf, 0, c->leb_size);
++	if (err) {
++		dbg_msg("ubi_read failed, LEB %d, error %d", lnum, err);
++		return err;
++	}
++	while (1) {
++		if (!is_a_node(c, buf, len)) {
++			int i, pad_len;
++
++			pad_len = get_pad_len(c, buf, len);
++			if (pad_len) {
++				buf += pad_len;
++				len -= pad_len;
++				dirty += pad_len;
++				continue;
++			}
++			if (!dbg_is_all_ff(buf, len)) {
++				dbg_msg("invalid empty space in LEB %d at %d",
++					lnum, c->leb_size - len);
++				err = -EINVAL;
++			}
++			i = lnum - c->lpt_first;
++			if (len != c->ltab[i].free) {
++				dbg_msg("invalid free space in LEB %d "
++					"(free %d, expected %d)",
++					lnum, len, c->ltab[i].free);
++				err = -EINVAL;
++			}
++			if (dirty != c->ltab[i].dirty) {
++				dbg_msg("invalid dirty space in LEB %d "
++					"(dirty %d, expected %d)",
++					lnum, dirty, c->ltab[i].dirty);
++				err = -EINVAL;
++			}
++			return err;
++		}
++		node_type = get_lpt_node_type(c, buf, &node_num);
++		node_len = get_lpt_node_len(c, node_type);
++		ret = dbg_is_node_dirty(c, node_type, lnum, c->leb_size - len);
++		if (ret == 1)
++			dirty += node_len;
++		buf += node_len;
++		len -= node_len;
++	}
++}
++
++/**
++ * dbg_check_ltab - check the free and dirty space in the ltab.
++ * @c: the UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int dbg_check_ltab(struct ubifs_info *c)
++{
++	int lnum, err, i, cnt;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_LPROPS))
++		return 0;
++
++	/* Bring the entire tree into memory */
++	cnt = DIV_ROUND_UP(c->main_lebs, UBIFS_LPT_FANOUT);
++	for (i = 0; i < cnt; i++) {
++		struct ubifs_pnode *pnode;
++
++		pnode = pnode_lookup(c, i);
++		if (IS_ERR(pnode))
++			return PTR_ERR(pnode);
++		cond_resched();
++	}
++
++	/* Check nodes */
++	err = dbg_check_lpt_nodes(c, (struct ubifs_cnode *)c->nroot, 0, 0);
++	if (err)
++		return err;
++
++	/* Check each LEB */
++	for (lnum = c->lpt_first; lnum <= c->lpt_last; lnum++) {
++		err = dbg_check_ltab_lnum(c, lnum);
++		if (err) {
++			dbg_err("failed at LEB %d", lnum);
++			return err;
++		}
++	}
++
++	dbg_lp("succeeded");
++	return 0;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/Makefile avr32-2.6/fs/ubifs/Makefile
+--- linux-2.6.25.6/fs/ubifs/Makefile	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/Makefile	2008-06-12 15:09:45.311815896 +0200
+@@ -0,0 +1,9 @@
++obj-$(CONFIG_UBIFS_FS) += ubifs.o
++
++ubifs-y += shrinker.o journal.o file.o dir.o super.o sb.o io.o
++ubifs-y += tnc.o master.o scan.o replay.o log.o commit.o gc.o orphan.o
++ubifs-y += budget.o find.o tnc_commit.o compress.o lpt.o lprops.o
++ubifs-y += recovery.o ioctl.o lpt_commit.o tnc_misc.o
++
++ubifs-$(CONFIG_UBIFS_FS_DEBUG) += debug.o
++ubifs-$(CONFIG_UBIFS_FS_XATTR) += xattr.o
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/master.c avr32-2.6/fs/ubifs/master.c
+--- linux-2.6.25.6/fs/ubifs/master.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/master.c	2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,387 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/* This file implements reading and writing the master node */
++
++#include "ubifs.h"
++
++/**
++ * scan_for_master - search the valid master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function scans the master node LEBs and search for the latest master
++ * node. Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int scan_for_master(struct ubifs_info *c)
++{
++	struct ubifs_scan_leb *sleb;
++	struct ubifs_scan_node *snod;
++	int lnum, offs = 0, nodes_cnt;
++
++	lnum = UBIFS_MST_LNUM;
++
++	sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++	if (IS_ERR(sleb))
++		return PTR_ERR(sleb);
++	nodes_cnt = sleb->nodes_cnt;
++	if (nodes_cnt > 0) {
++		snod = list_entry(sleb->nodes.prev, struct ubifs_scan_node,
++				  list);
++		if (snod->type != UBIFS_MST_NODE)
++			goto out;
++		memcpy(c->mst_node, snod->node, snod->len);
++		offs = snod->offs;
++	}
++	ubifs_scan_destroy(sleb);
++
++	lnum += 1;
++
++	sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++	if (IS_ERR(sleb))
++		return PTR_ERR(sleb);
++	if (sleb->nodes_cnt != nodes_cnt)
++		goto out;
++	if (!sleb->nodes_cnt)
++		goto out;
++	snod = list_entry(sleb->nodes.prev, struct ubifs_scan_node, list);
++	if (snod->type != UBIFS_MST_NODE)
++		goto out;
++	if (snod->offs != offs)
++		goto out;
++	if (memcmp((void *)c->mst_node + UBIFS_CH_SZ,
++		   (void *)snod->node + UBIFS_CH_SZ,
++		   UBIFS_MST_NODE_SZ - UBIFS_CH_SZ))
++		goto out;
++	c->mst_offs = offs;
++	ubifs_scan_destroy(sleb);
++	return 0;
++
++out:
++	ubifs_scan_destroy(sleb);
++	return -EINVAL;
++}
++
++/**
++ * validate_master - validate master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function validates data which was read from master node. Returns zero
++ * if the data is all right and %-EINVAL if not.
++ */
++static int validate_master(const struct ubifs_info *c)
++{
++	unsigned long long main_sz;
++	int err;
++
++	if (c->max_sqnum >= SQNUM_WATERMARK) {
++		err = 1;
++		goto out;
++	}
++
++	if (c->cmt_no >= c->max_sqnum) {
++		err = 2;
++		goto out;
++	}
++
++	if (c->highest_inum >= INUM_WATERMARK) {
++		err = 3;
++		goto out;
++	}
++
++	if (c->lhead_lnum < UBIFS_LOG_LNUM ||
++	    c->lhead_lnum >= UBIFS_LOG_LNUM + c->log_lebs ||
++	    c->lhead_offs < 0 || c->lhead_offs >= c->leb_size ||
++	    c->lhead_offs & (c->min_io_size - 1)) {
++		err = 4;
++		goto out;
++	}
++
++	if (c->zroot.lnum >= c->leb_cnt || c->zroot.lnum < c->main_first ||
++	    c->zroot.offs >= c->leb_size || c->zroot.offs & 7) {
++		err = 5;
++		goto out;
++	}
++
++	if (c->zroot.len < c->ranges[UBIFS_IDX_NODE].min_len ||
++	    c->zroot.len > c->ranges[UBIFS_IDX_NODE].max_len) {
++		err = 6;
++		goto out;
++	}
++
++	if (c->gc_lnum >= c->leb_cnt || c->gc_lnum < c->main_first) {
++		err = 7;
++		goto out;
++	}
++
++	if (c->ihead_lnum >= c->leb_cnt || c->ihead_lnum < c->main_first ||
++	    c->ihead_offs % c->min_io_size || c->ihead_offs < 0 ||
++	    c->ihead_offs > c->leb_size || c->ihead_offs & 7) {
++		err = 8;
++		goto out;
++	}
++
++	main_sz = c->main_lebs * (unsigned long long)c->leb_size;
++	if (c->old_idx_sz & 7 || c->old_idx_sz >= main_sz) {
++		err = 9;
++		goto out;
++	}
++
++	if (c->lpt_lnum < c->lpt_first || c->lpt_lnum > c->lpt_last ||
++	    c->lpt_offs < 0 || c->lpt_offs + c->nnode_sz > c->leb_size) {
++		err = 10;
++		goto out;
++	}
++
++	if (c->nhead_lnum < c->lpt_first || c->nhead_lnum > c->lpt_last ||
++	    c->nhead_offs < 0 || c->nhead_offs % c->min_io_size ||
++	    c->nhead_offs > c->leb_size) {
++		err = 11;
++		goto out;
++	}
++
++	if (c->ltab_lnum < c->lpt_first || c->ltab_lnum > c->lpt_last ||
++	    c->ltab_offs < 0 ||
++	    c->ltab_offs + c->ltab_sz > c->leb_size) {
++		err = 12;
++		goto out;
++	}
++
++	if (c->big_lpt && (c->lsave_lnum < c->lpt_first ||
++	    c->lsave_lnum > c->lpt_last || c->lsave_offs < 0 ||
++	    c->lsave_offs + c->lsave_sz > c->leb_size)) {
++		err = 13;
++		goto out;
++	}
++
++	if (c->lscan_lnum < c->main_first || c->lscan_lnum >= c->leb_cnt) {
++		err = 14;
++		goto out;
++	}
++
++	if (c->lst.empty_lebs < 0 || c->lst.empty_lebs > c->main_lebs - 2) {
++		err = 15;
++		goto out;
++	}
++
++	if (c->lst.idx_lebs < 0 || c->lst.idx_lebs > c->main_lebs - 1) {
++		err = 16;
++		goto out;
++	}
++
++	if (c->lst.total_free < 0 || c->lst.total_free > main_sz ||
++	    c->lst.total_free & 7) {
++		err = 17;
++		goto out;
++	}
++
++	if (c->lst.total_dirty < 0 || (c->lst.total_dirty & 7)) {
++		err = 18;
++		goto out;
++	}
++
++	if (c->lst.total_used < 0 || (c->lst.total_used & 7)) {
++		err = 19;
++		goto out;
++	}
++
++	if (c->lst.total_free + c->lst.total_dirty +
++	    c->lst.total_used > main_sz) {
++		err = 20;
++		goto out;
++	}
++
++	if (c->lst.total_dead + c->lst.total_dark +
++	    c->lst.total_used + c->old_idx_sz > main_sz) {
++		err = 21;
++		goto out;
++	}
++
++	if (c->lst.total_dead < 0 ||
++	    c->lst.total_dead > c->lst.total_free + c->lst.total_dirty ||
++	    c->lst.total_dead & 7) {
++		err = 22;
++		goto out;
++	}
++
++	if (c->lst.total_dark < 0 ||
++	    c->lst.total_dark > c->lst.total_free + c->lst.total_dirty ||
++	    c->lst.total_dark & 7) {
++		err = 23;
++		goto out;
++	}
++
++	return 0;
++
++out:
++	ubifs_err("bad master node at offset %d error %d", c->mst_offs, err);
++	dbg_dump_node(c, c->mst_node);
++	return -EINVAL;
++}
++
++/**
++ * ubifs_read_master - read master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function finds and reads the master node during file-system mount. If
++ * the flash is empty, it creates default master node as well. Returns zero in
++ * case of success and a negative error code in case of failure.
++ */
++int ubifs_read_master(struct ubifs_info *c)
++{
++	int err, old_leb_cnt;
++
++	c->mst_node = kzalloc(c->mst_node_alsz, GFP_KERNEL);
++	if (!c->mst_node)
++		return -ENOMEM;
++
++	err = scan_for_master(c);
++	if (err) {
++		err = ubifs_recover_master_node(c);
++		if (err)
++			/*
++			 * Note, we do not free 'c->mst_node' here because the
++			 * unmount routine will take care of this.
++			 */
++			return err;
++	}
++
++	/* Make sure that the recovery flag is clear */
++	c->mst_node->flags &= cpu_to_le32(~UBIFS_MST_RCVRY);
++
++	c->max_sqnum       = le64_to_cpu(c->mst_node->ch.sqnum);
++	c->highest_inum    = le64_to_cpu(c->mst_node->highest_inum);
++	c->cmt_no          = le64_to_cpu(c->mst_node->cmt_no);
++	c->zroot.lnum      = le32_to_cpu(c->mst_node->root_lnum);
++	c->zroot.offs      = le32_to_cpu(c->mst_node->root_offs);
++	c->zroot.len       = le32_to_cpu(c->mst_node->root_len);
++	c->lhead_lnum      = le32_to_cpu(c->mst_node->log_lnum);
++	c->gc_lnum         = le32_to_cpu(c->mst_node->gc_lnum);
++	c->ihead_lnum      = le32_to_cpu(c->mst_node->ihead_lnum);
++	c->ihead_offs      = le32_to_cpu(c->mst_node->ihead_offs);
++	c->old_idx_sz      = le64_to_cpu(c->mst_node->index_size);
++	c->lpt_lnum        = le32_to_cpu(c->mst_node->lpt_lnum);
++	c->lpt_offs        = le32_to_cpu(c->mst_node->lpt_offs);
++	c->nhead_lnum      = le32_to_cpu(c->mst_node->nhead_lnum);
++	c->nhead_offs      = le32_to_cpu(c->mst_node->nhead_offs);
++	c->ltab_lnum       = le32_to_cpu(c->mst_node->ltab_lnum);
++	c->ltab_offs       = le32_to_cpu(c->mst_node->ltab_offs);
++	c->lsave_lnum      = le32_to_cpu(c->mst_node->lsave_lnum);
++	c->lsave_offs      = le32_to_cpu(c->mst_node->lsave_offs);
++	c->lscan_lnum      = le32_to_cpu(c->mst_node->lscan_lnum);
++	c->lst.empty_lebs  = le32_to_cpu(c->mst_node->empty_lebs);
++	c->lst.idx_lebs    = le32_to_cpu(c->mst_node->idx_lebs);
++	old_leb_cnt        = le32_to_cpu(c->mst_node->leb_cnt);
++	c->lst.total_free  = le64_to_cpu(c->mst_node->total_free);
++	c->lst.total_dirty = le64_to_cpu(c->mst_node->total_dirty);
++	c->lst.total_used  = le64_to_cpu(c->mst_node->total_used);
++	c->lst.total_dead  = le64_to_cpu(c->mst_node->total_dead);
++	c->lst.total_dark  = le64_to_cpu(c->mst_node->total_dark);
++
++	c->calc_idx_sz = c->old_idx_sz;
++
++	if (c->mst_node->flags & cpu_to_le32(UBIFS_MST_NO_ORPHS))
++		c->no_orphs = 1;
++
++	if (old_leb_cnt != c->leb_cnt) {
++		/* The file system has been resized */
++		int growth = c->leb_cnt - old_leb_cnt;
++
++		if (c->leb_cnt < old_leb_cnt ||
++		    c->leb_cnt < UBIFS_MIN_LEB_CNT) {
++			ubifs_err("bad leb_cnt on master node");
++			dbg_dump_node(c, c->mst_node);
++			return -EINVAL;
++		}
++
++		dbg_mnt("Auto resizing (master) from %d LEBs to %d LEBs",
++			old_leb_cnt, c->leb_cnt);
++		c->lst.empty_lebs += growth;
++		c->lst.total_free += growth * (long long)c->leb_size;
++		c->lst.total_dark += growth * (long long)c->dark_wm;
++
++		/*
++		 * Reflect changes back onto the master node. N.B. the master
++		 * node gets written immediately whenever mounting (or
++		 * remounting) in read-write mode, so we do not need to write it
++		 * here.
++		 */
++		c->mst_node->leb_cnt = cpu_to_le32(c->leb_cnt);
++		c->mst_node->empty_lebs = cpu_to_le32(c->lst.empty_lebs);
++		c->mst_node->total_free = cpu_to_le64(c->lst.total_free);
++		c->mst_node->total_dark = cpu_to_le64(c->lst.total_dark);
++	}
++
++	err = validate_master(c);
++	if (err)
++		return err;
++
++	err = dbg_old_index_check_init(c, &c->zroot);
++
++	return err;
++}
++
++/**
++ * ubifs_write_master - write master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function writes the master node. The caller has to take the
++ * @c->mst_mutex lock before calling this function. Returns zero in case of
++ * success and a negative error code in case of failure. The master node is
++ * written twice to enable recovery.
++ */
++int ubifs_write_master(struct ubifs_info *c)
++{
++	int err, lnum, offs, len;
++
++	if (c->ro_media)
++		return -EINVAL;
++
++	lnum = UBIFS_MST_LNUM;
++	offs = c->mst_offs + c->mst_node_alsz;
++	len = UBIFS_MST_NODE_SZ;
++
++	if (offs + UBIFS_MST_NODE_SZ > c->leb_size) {
++		err = ubifs_leb_unmap(c, lnum);
++		if (err)
++			return err;
++		offs = 0;
++	}
++
++	c->mst_offs = offs;
++	c->mst_node->highest_inum = cpu_to_le64(c->highest_inum);
++
++	err = ubifs_write_node(c, c->mst_node, len, lnum, offs, UBI_SHORTTERM);
++	if (err)
++		return err;
++
++	lnum += 1;
++
++	if (offs == 0) {
++		err = ubifs_leb_unmap(c, lnum);
++		if (err)
++			return err;
++	}
++	err = ubifs_write_node(c, c->mst_node, len, lnum, offs, UBI_SHORTTERM);
++
++	return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/misc.h avr32-2.6/fs/ubifs/misc.h
+--- linux-2.6.25.6/fs/ubifs/misc.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/misc.h	2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,311 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file contains miscellaneous helper functions.
++ */
++
++#ifndef __UBIFS_MISC_H__
++#define __UBIFS_MISC_H__
++
++/**
++ * ubifs_zn_dirty - check if znode is dirty.
++ * @znode: znode to check
++ *
++ * This helper function returns %1 if @znode is dirty and %0 otherwise.
++ */
++static inline int ubifs_zn_dirty(const struct ubifs_znode *znode)
++{
++	return !!test_bit(DIRTY_ZNODE, &znode->flags);
++}
++
++/**
++ * ubifs_wake_up_bgt - wake up background thread.
++ * @c: UBIFS file-system description object
++ */
++static inline void ubifs_wake_up_bgt(struct ubifs_info *c)
++{
++	if (c->bgt && !c->need_bgt) {
++		c->need_bgt = 1;
++		wake_up_process(c->bgt);
++	}
++}
++
++/**
++ * ubifs_tnc_find_child - find next child in znode.
++ * @znode: znode to search at
++ * @start: the zbranch index to start at
++ *
++ * This helper function looks for znode child starting at index @start. Returns
++ * the child or %NULL if no children were found.
++ */
++static inline struct ubifs_znode *
++ubifs_tnc_find_child(struct ubifs_znode *znode, int start)
++{
++	while (start < znode->child_cnt) {
++		if (znode->zbranch[start].znode)
++			return znode->zbranch[start].znode;
++		start += 1;
++	}
++
++	return NULL;
++}
++
++/**
++ * ubifs_inode - get UBIFS inode information by VFS 'struct inode' object.
++ * @inode: the VFS 'struct inode' pointer
++ */
++static inline struct ubifs_inode *ubifs_inode(const struct inode *inode)
++{
++	return container_of(inode, struct ubifs_inode, vfs_inode);
++}
++
++/**
++ * ubifs_ro_mode - switch UBIFS to read read-only mode.
++ * @c: UBIFS file-system description object
++ * @err: error code which is the reason of switching to R/O mode
++ */
++static inline void ubifs_ro_mode(struct ubifs_info *c, int err)
++{
++	if (!c->ro_media) {
++		c->ro_media = 1;
++		ubifs_warn("switched to read-only mode, error %d", err);
++		dbg_dump_stack();
++	}
++}
++
++/**
++ * ubifs_compr_present - check if compressor was compiled in.
++ * @compr_type: compressor type to check
++ *
++ * This function returns %1 of compressor of type @compr_type is present, and
++ * %0 if not.
++ */
++static inline int ubifs_compr_present(int compr_type)
++{
++	ubifs_assert(compr_type >= 0 && compr_type < UBIFS_COMPR_TYPES_CNT);
++	return !!ubifs_compressors[compr_type]->capi_name;
++}
++
++/**
++ * ubifs_compr_name - get compressor name string by its type.
++ * @compr_type: compressor type
++ *
++ * This function returns compressor type string.
++ */
++static inline const char *ubifs_compr_name(int compr_type)
++{
++	ubifs_assert(compr_type >= 0 && compr_type < UBIFS_COMPR_TYPES_CNT);
++	return ubifs_compressors[compr_type]->name;
++}
++
++/**
++ * ubifs_wbuf_sync - synchronize write-buffer.
++ * @wbuf: write-buffer to synchronize
++ *
++ * This is the same as as 'ubifs_wbuf_sync_nolock()' but it does not assume
++ * that the write-buffer is already locked.
++ */
++static inline int ubifs_wbuf_sync(struct ubifs_wbuf *wbuf)
++{
++	int err;
++
++	mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++	err = ubifs_wbuf_sync_nolock(wbuf);
++	mutex_unlock(&wbuf->io_mutex);
++	return err;
++}
++
++/**
++ * ubifs_leb_unmap - unmap an LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to unmap
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static inline int ubifs_leb_unmap(const struct ubifs_info *c, int lnum)
++{
++	int err;
++
++	err = ubi_leb_unmap(c->ubi, lnum);
++	if (err) {
++		ubifs_err("unmap LEB %d failed, error %d", lnum, err);
++		return err;
++	}
++
++	return 0;
++}
++
++/**
++ * ubifs_leb_write - write to a LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number to write
++ * @buf: buffer to write from
++ * @offs: offset within LEB to write to
++ * @len: length to write
++ * @dtype: data type
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static inline int ubifs_leb_write(const struct ubifs_info *c, int lnum,
++				  const void *buf, int offs, int len, int dtype)
++{
++	int err;
++
++	err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype);
++	if (err) {
++		ubifs_err("writing %d bytes at %d:%d, error %d",
++			  len, lnum, offs, err);
++		return err;
++	}
++
++	return 0;
++}
++
++/**
++ * ubifs_encode_dev - encode device node IDs.
++ * @dev: UBIFS device node information
++ * @rdev: device IDs to encode
++ *
++ * This is a helper function which encodes major/minor numbers of a device node
++ * into UBIFS device node description. We use standard Linux "new" and "huge"
++ * encodings.
++ */
++static inline int ubifs_encode_dev(union ubifs_dev_desc *dev, dev_t rdev)
++{
++	if (new_valid_dev(rdev)) {
++		dev->new = cpu_to_le32(new_encode_dev(rdev));
++		return sizeof(dev->new);
++	} else {
++		dev->huge = cpu_to_le64(huge_encode_dev(rdev));
++		return sizeof(dev->huge);
++	}
++}
++
++/**
++ * ubifs_add_dirt - add dirty space to LEB properties.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to add dirty space for
++ * @dirty: dirty space to add
++ *
++ * This is a helper function which increased amount of dirty LEB space. Returns
++ * zero in case of success and a negative error code in case of failure.
++ */
++static inline int ubifs_add_dirt(struct ubifs_info *c, int lnum, int dirty)
++{
++	return ubifs_update_one_lp(c, lnum, LPROPS_NC, dirty, 0, 0);
++}
++
++/**
++ * ubifs_return_leb - return LEB to lprops.
++ * @c: the UBIFS file-system description object
++ * @lnum: LEB to return
++ *
++ * This helper function cleans the "taken" flag of a logical eraseblock in the
++ * lprops. Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static inline int ubifs_return_leb(struct ubifs_info *c, int lnum)
++{
++	return ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0,
++				   LPROPS_TAKEN, 0);
++}
++
++/**
++ * ubifs_idx_node_sz - return index node size.
++ * @c: the UBIFS file-system description object
++ * @child_cnt: number of children of this index node
++ */
++static inline int ubifs_idx_node_sz(const struct ubifs_info *c, int child_cnt)
++{
++	return UBIFS_IDX_NODE_SZ + (UBIFS_BRANCH_SZ + c->key_len) * child_cnt;
++}
++
++/**
++ * ubifs_idx_branch - return pointer to an index branch.
++ * @c: the UBIFS file-system description object
++ * @idx: index node
++ * @bnum: branch number
++ */
++static inline
++struct ubifs_branch *ubifs_idx_branch(const struct ubifs_info *c,
++				      const struct ubifs_idx_node *idx,
++				      int bnum)
++{
++	return (struct ubifs_branch *)((void *)idx->branches +
++				       (UBIFS_BRANCH_SZ + c->key_len) * bnum);
++}
++
++/**
++ * ubifs_idx_key - return pointer to an index key.
++ * @c: the UBIFS file-system description object
++ * @idx: index node
++ */
++static inline void *ubifs_idx_key(const struct ubifs_info *c,
++				  const struct ubifs_idx_node *idx)
++{
++	return (void *)((struct ubifs_branch *)idx->branches)->key;
++}
++
++/**
++ * ubifs_reported_space - calculate reported free space.
++ * @c: the UBIFS file-system description object
++ * @free: amount of free space
++ *
++ * This function calculates amount of free space which will be reported to
++ * user-space. User-space application tend to expect that if the file-system
++ * (e.g., via the 'statfs()' call) reports that it has N bytes available, they
++ * are able to write a file of size N. UBIFS attaches node headers to each data
++ * node and it has to write indexind nodes as well. This introduces additional
++ * overhead, and UBIFS it has to report sligtly less free space to meet the
++ * above expectetion.
++ *
++ * This function assumes free space is made up of uncompressed data nodes and
++ * full index nodes (one per data node, doubled because we always allow enough
++ * space to write the index twice).
++ *
++ * Note, the calculation is pessimistic, which means that most of the time
++ * UBIFS reports less space than it actually has.
++ */
++static inline long long ubifs_reported_space(const struct ubifs_info *c,
++					     uint64_t free)
++{
++	int divisor, factor;
++
++	divisor = UBIFS_MAX_DATA_NODE_SZ + (c->max_idx_node_sz << 1);
++	factor = UBIFS_MAX_DATA_NODE_SZ - UBIFS_DATA_NODE_SZ;
++	do_div(free, divisor);
++
++	return free * factor;
++}
++
++/**
++ * ubifs_current_time - round current time to time granularity.
++ * @inode: inode
++ */
++static inline struct timespec ubifs_current_time(struct inode *inode)
++{
++	return (inode->i_sb->s_time_gran < NSEC_PER_SEC) ?
++		current_fs_time(inode->i_sb) : CURRENT_TIME_SEC;
++}
++
++#endif /* __UBIFS_MISC_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/orphan.c avr32-2.6/fs/ubifs/orphan.c
+--- linux-2.6.25.6/fs/ubifs/orphan.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/orphan.c	2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,958 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Author: Adrian Hunter
++ */
++
++#include "ubifs.h"
++
++/*
++ * An orphan is an inode number whose inode node has been committed to the index
++ * with a link count of zero. That happens when an open file is deleted
++ * (unlinked) and then a commit is run. In the normal course of events the inode
++ * would be deleted when the file is closed. However in the case of an unclean
++ * unmount, orphans need to be accounted for. After an unclean unmount, the
++ * orphans' inodes must be deleted which means either scanning the entire index
++ * looking for them, or keeping a list on flash somewhere. This unit implements
++ * the latter approach.
++ *
++ * The orphan area is a fixed number of LEBs situated between the LPT area and
++ * the main area. The number of orphan area LEBs is specified when the file
++ * system is created. The minimum number is 1. The size of the orphan area
++ * should be so that it can hold the maximum number of orphans that are expected
++ * to ever exist at one time.
++ *
++ * The number of orphans that can fit in a LEB is:
++ *
++ *         (c->leb_size - UBIFS_ORPH_NODE_SZ) / sizeof(__le64)
++ *
++ * For example: a 15872 byte LEB can fit 1980 orphans so 1 LEB may be enough.
++ *
++ * Orphans are accumulated in a rb-tree. When an inode's link count drops to
++ * zero, the inode number is added to the rb-tree. It is removed from the tree
++ * when the inode is deleted.  Any new orphans that are in the orphan tree when
++ * the commit is run, are written to the orphan area in 1 or more orph nodes.
++ * If the orphan area is full, it is consolidated to make space.  There is
++ * always enough space because validation prevents the user from creating more
++ * than the maximum number of orphans allowed.
++ */
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++static int dbg_check_orphans(struct ubifs_info *c);
++#else
++#define dbg_check_orphans(c) 0
++#endif
++
++/**
++ * ubifs_add_orphan - add an orphan.
++ * @c: UBIFS file-system description object
++ * @inum: orphan inode number
++ *
++ * Add an orphan. This function is called when an inodes link count drops to
++ * zero.
++ */
++int ubifs_add_orphan(struct ubifs_info *c, ino_t inum)
++{
++	struct ubifs_orphan *orphan, *o;
++	struct rb_node **p, *parent = NULL;
++
++	orphan = kzalloc(sizeof(struct ubifs_orphan), GFP_NOFS);
++	if (!orphan)
++		return -ENOMEM;
++	orphan->inum = inum;
++	orphan->new = 1;
++
++	spin_lock(&c->orphan_lock);
++	if (c->tot_orphans >= c->max_orphans) {
++		spin_unlock(&c->orphan_lock);
++		kfree(orphan);
++		return -ENFILE;
++	}
++	p = &c->orph_tree.rb_node;
++	while (*p) {
++		parent = *p;
++		o = rb_entry(parent, struct ubifs_orphan, rb);
++		if (inum < o->inum)
++			p = &(*p)->rb_left;
++		else if (inum > o->inum)
++			p = &(*p)->rb_right;
++		else {
++			dbg_err("orphaned twice");
++			spin_unlock(&c->orphan_lock);
++			kfree(orphan);
++			return 0;
++		}
++	}
++	c->tot_orphans += 1;
++	c->new_orphans += 1;
++	rb_link_node(&orphan->rb, parent, p);
++	rb_insert_color(&orphan->rb, &c->orph_tree);
++	list_add_tail(&orphan->list, &c->orph_list);
++	list_add_tail(&orphan->new_list, &c->orph_new);
++	spin_unlock(&c->orphan_lock);
++	dbg_gen("ino %lu", inum);
++	return 0;
++}
++
++/**
++ * ubifs_delete_orphan - delete an orphan.
++ * @c: UBIFS file-system description object
++ * @inum: orphan inode number
++ *
++ * Delete an orphan. This function is called when an inode is deleted.
++ */
++void ubifs_delete_orphan(struct ubifs_info *c, ino_t inum)
++{
++	struct ubifs_orphan *o;
++	struct rb_node *p;
++
++	spin_lock(&c->orphan_lock);
++	p = c->orph_tree.rb_node;
++	while (p) {
++		o = rb_entry(p, struct ubifs_orphan, rb);
++		if (inum < o->inum)
++			p = p->rb_left;
++		else if (inum > o->inum)
++			p = p->rb_right;
++		else {
++			if (o->dnext) {
++				spin_unlock(&c->orphan_lock);
++				dbg_gen("deleted twice ino %lu", inum);
++				return;
++			}
++			if (o->cnext) {
++				o->dnext = c->orph_dnext;
++				c->orph_dnext = o;
++				spin_unlock(&c->orphan_lock);
++				dbg_gen("delete later ino %lu", inum);
++				return;
++			}
++			rb_erase(p, &c->orph_tree);
++			list_del(&o->list);
++			c->tot_orphans -= 1;
++			if (o->new) {
++				list_del(&o->new_list);
++				c->new_orphans -= 1;
++			}
++			spin_unlock(&c->orphan_lock);
++			kfree(o);
++			dbg_gen("inum %lu", inum);
++			return;
++		}
++	}
++	spin_unlock(&c->orphan_lock);
++	dbg_err("missing orphan ino %lu", inum);
++	dbg_dump_stack();
++}
++
++/**
++ * ubifs_orphan_start_commit - start commit of orphans.
++ * @c: UBIFS file-system description object
++ *
++ * Start commit of orphans.
++ */
++int ubifs_orphan_start_commit(struct ubifs_info *c)
++{
++	struct ubifs_orphan *orphan, **last;
++
++	spin_lock(&c->orphan_lock);
++	last = &c->orph_cnext;
++	list_for_each_entry(orphan, &c->orph_new, new_list) {
++		ubifs_assert(orphan->new);
++		orphan->new = 0;
++		*last = orphan;
++		last = &orphan->cnext;
++	}
++	*last = orphan->cnext;
++	c->cmt_orphans = c->new_orphans;
++	c->new_orphans = 0;
++	dbg_cmt("%d orphans to commit", c->cmt_orphans);
++	INIT_LIST_HEAD(&c->orph_new);
++	if (c->tot_orphans == 0)
++		c->no_orphs = 1;
++	else
++		c->no_orphs = 0;
++	spin_unlock(&c->orphan_lock);
++	return 0;
++}
++
++/**
++ * avail_orphs - calculate available space.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns the number of orphans that can be written in the
++ * available space.
++ */
++static int avail_orphs(struct ubifs_info *c)
++{
++	int avail_lebs, avail, gap;
++
++	avail_lebs = c->orph_lebs - (c->ohead_lnum - c->orph_first) - 1;
++	avail = avail_lebs *
++	       ((c->leb_size - UBIFS_ORPH_NODE_SZ) / sizeof(__le64));
++	gap = c->leb_size - c->ohead_offs;
++	if (gap >= UBIFS_ORPH_NODE_SZ + sizeof(__le64))
++		avail += (gap - UBIFS_ORPH_NODE_SZ) / sizeof(__le64);
++	return avail;
++}
++
++/**
++ * tot_avail_orphs - calculate total space.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns the number of orphans that can be written in half
++ * the total space. That leaves half the space for adding new orphans.
++ */
++static int tot_avail_orphs(struct ubifs_info *c)
++{
++	int avail_lebs, avail;
++
++	avail_lebs = c->orph_lebs;
++	avail = avail_lebs *
++	       ((c->leb_size - UBIFS_ORPH_NODE_SZ) / sizeof(__le64));
++	return avail / 2;
++}
++
++/**
++ * do_write_orph_node - write a node
++ * @c: UBIFS file-system description object
++ * @len: length of node
++ * @atomic: write atomically
++ *
++ * This function writes a node to the orphan head from the orphan buffer. If
++ * %atomic is not zero, then the write is done atomically. On success, %0 is
++ * returned, otherwise a negative error code is returned.
++ */
++static int do_write_orph_node(struct ubifs_info *c, int len, int atomic)
++{
++	int err = 0;
++
++	if (atomic) {
++		ubifs_assert(c->ohead_offs == 0);
++		ubifs_prepare_node(c, c->orph_buf, len, 1);
++		len = ALIGN(len, c->min_io_size);
++		err = ubi_leb_change(c->ubi, c->ohead_lnum, c->orph_buf, len,
++				     UBI_SHORTTERM);
++	} else {
++		if (c->ohead_offs == 0) {
++			/* Ensure LEB has been unmapped */
++			err = ubifs_leb_unmap(c, c->ohead_lnum);
++			if (err)
++				return err;
++		}
++		err = ubifs_write_node(c, c->orph_buf, len, c->ohead_lnum,
++				       c->ohead_offs, UBI_SHORTTERM);
++	}
++	return err;
++}
++
++/**
++ * write_orph_node - write an orph node
++ * @c: UBIFS file-system description object
++ * @atomic: write atomically
++ *
++ * This function builds an orph node from the cnext list and writes it to the
++ * orphan head. On success, %0 is returned, otherwise a negative error code
++ * is returned.
++ */
++static int write_orph_node(struct ubifs_info *c, int atomic)
++{
++	struct ubifs_orphan *orphan, *cnext;
++	struct ubifs_orph_node *orph;
++	int gap, err, len, cnt, i;
++
++	ubifs_assert(c->cmt_orphans > 0);
++	gap = c->leb_size - c->ohead_offs;
++	if (gap < UBIFS_ORPH_NODE_SZ + sizeof(__le64)) {
++		c->ohead_lnum += 1;
++		c->ohead_offs = 0;
++		gap = c->leb_size;
++		if (c->ohead_lnum > c->orph_last) {
++			/*
++			 * We limit the number of orphans so that this should
++			 * never happen.
++			 */
++			ubifs_err("out of space in orphan area");
++			return -EINVAL;
++		}
++	}
++	cnt = (gap - UBIFS_ORPH_NODE_SZ) / sizeof(__le64);
++	if (cnt > c->cmt_orphans)
++		cnt = c->cmt_orphans;
++	len = UBIFS_ORPH_NODE_SZ + cnt * sizeof(__le64);
++	ubifs_assert(c->orph_buf);
++	orph = c->orph_buf;
++	orph->ch.node_type = UBIFS_ORPH_NODE;
++	spin_lock(&c->orphan_lock);
++	cnext = c->orph_cnext;
++	for (i = 0; i < cnt; i++) {
++		orphan = cnext;
++		orph->inos[i] = cpu_to_le64(orphan->inum);
++		cnext = orphan->cnext;
++		orphan->cnext = NULL;
++	}
++	c->orph_cnext = cnext;
++	c->cmt_orphans -= cnt;
++	spin_unlock(&c->orphan_lock);
++	if (c->cmt_orphans)
++		orph->cmt_no = cpu_to_le64(c->cmt_no + 1);
++	else
++		/* Mark the last node of the commit */
++		orph->cmt_no = cpu_to_le64((c->cmt_no + 1) | (1ULL << 63));
++	ubifs_assert(c->ohead_offs + len <= c->leb_size);
++	ubifs_assert(c->ohead_lnum >= c->orph_first);
++	ubifs_assert(c->ohead_lnum <= c->orph_last);
++	err = do_write_orph_node(c, len, atomic);
++	c->ohead_offs += ALIGN(len, c->min_io_size);
++	c->ohead_offs = ALIGN(c->ohead_offs, 8);
++	return err;
++}
++
++/**
++ * write_orph_nodes - write orph nodes until there are no more to commit
++ * @c: UBIFS file-system description object
++ * @atomic: write atomically
++ *
++ * This function writes orph nodes for all the orphans to commit. On success,
++ * %0 is returned, otherwise a negative error code is returned.
++ */
++static int write_orph_nodes(struct ubifs_info *c, int atomic)
++{
++	int err;
++
++	while (c->cmt_orphans > 0) {
++		err = write_orph_node(c, atomic);
++		if (err)
++			return err;
++	}
++	if (atomic) {
++		int lnum;
++
++		/* Unmap any unused LEBs after consolidation */
++		lnum = c->ohead_lnum + 1;
++		for (lnum = c->ohead_lnum + 1; lnum <= c->orph_last; lnum++) {
++			err = ubifs_leb_unmap(c, lnum);
++			if (err)
++				return err;
++		}
++	}
++	return 0;
++}
++
++/**
++ * consolidate - consolidate the orphan area.
++ * @c: UBIFS file-system description object
++ *
++ * This function enables consolidation by putting all the orphans into the list
++ * to commit. The list is in the order that the orphans were added, and the
++ * LEBs are written atomically in order, so at no time can orphans be lost by
++ * an unclean unmount.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int consolidate(struct ubifs_info *c)
++{
++	int tot_avail = tot_avail_orphs(c), err = 0;
++
++	spin_lock(&c->orphan_lock);
++	dbg_cmt("there is space for %d orphans and there are %d",
++		tot_avail, c->tot_orphans);
++	if (c->tot_orphans - c->new_orphans <= tot_avail) {
++		struct ubifs_orphan *orphan, **last;
++		int cnt = 0;
++
++		/* Change the cnext list to include all non-new orphans */
++		last = &c->orph_cnext;
++		list_for_each_entry(orphan, &c->orph_list, list) {
++			if (orphan->new)
++				continue;
++			*last = orphan;
++			last = &orphan->cnext;
++			cnt += 1;
++		}
++		*last = orphan->cnext;
++		ubifs_assert(cnt == c->tot_orphans - c->new_orphans);
++		c->cmt_orphans = cnt;
++		c->ohead_lnum = c->orph_first;
++		c->ohead_offs = 0;
++	} else {
++		/*
++		 * We limit the number of orphans so that this should
++		 * never happen.
++		 */
++		ubifs_err("out of space in orphan area");
++		err = -EINVAL;
++	}
++	spin_unlock(&c->orphan_lock);
++	return err;
++}
++
++/**
++ * commit_orphans - commit orphans.
++ * @c: UBIFS file-system description object
++ *
++ * This function commits orphans to flash. On success, %0 is returned,
++ * otherwise a negative error code is returned.
++ */
++static int commit_orphans(struct ubifs_info *c)
++{
++	int avail, atomic = 0, err;
++
++	ubifs_assert(c->cmt_orphans > 0);
++	avail = avail_orphs(c);
++	if (avail < c->cmt_orphans) {
++		/* Not enough space to write new orphans, so consolidate */
++		err = consolidate(c);
++		if (err)
++			return err;
++		atomic = 1;
++	}
++	err = write_orph_nodes(c, atomic);
++	return err;
++}
++
++/**
++ * erase_deleted - erase the orphans marked for deletion.
++ * @c: UBIFS file-system description object
++ *
++ * During commit, the orphans being committed cannot be deleted, so they are
++ * marked for deletion and deleted by this function. Also, the recovery
++ * adds killed orphans to the deletion list, and therefore they are deleted
++ * here too.
++ */
++static void erase_deleted(struct ubifs_info *c)
++{
++	struct ubifs_orphan *orphan, *dnext;
++
++	spin_lock(&c->orphan_lock);
++	dnext = c->orph_dnext;
++	while (dnext) {
++		orphan = dnext;
++		dnext = orphan->dnext;
++		ubifs_assert(!orphan->new);
++		rb_erase(&orphan->rb, &c->orph_tree);
++		list_del(&orphan->list);
++		c->tot_orphans -= 1;
++		dbg_gen("deleting orphan ino %lu", orphan->inum);
++		kfree(orphan);
++	}
++	c->orph_dnext = NULL;
++	spin_unlock(&c->orphan_lock);
++}
++
++/**
++ * ubifs_orphan_end_commit - end commit of orphans.
++ * @c: UBIFS file-system description object
++ *
++ * End commit of orphans.
++ */
++int ubifs_orphan_end_commit(struct ubifs_info *c)
++{
++	int err;
++
++	if (c->cmt_orphans != 0) {
++		err = commit_orphans(c);
++		if (err)
++			return err;
++	}
++	erase_deleted(c);
++	err = dbg_check_orphans(c);
++	return err;
++}
++
++/**
++ * clear_orphans - erase all LEBs used for orphans.
++ * @c: UBIFS file-system description object
++ *
++ * If recovery is not required, then the orphans from the previous session
++ * are not needed. This function locates the LEBs used to record
++ * orphans, and un-maps them.
++ */
++static int clear_orphans(struct ubifs_info *c)
++{
++	int lnum, err;
++
++	for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
++		err = ubifs_leb_unmap(c, lnum);
++		if (err)
++			return err;
++	}
++	c->ohead_lnum = c->orph_first;
++	c->ohead_offs = 0;
++	return 0;
++}
++
++/**
++ * insert_dead_orphan - insert an orphan.
++ * @c: UBIFS file-system description object
++ * @inum: orphan inode number
++ *
++ * This function is a helper to the 'do_kill_orphans()' function. The orphan
++ * must be kept until the next commit, so it is added to the rb-tree and the
++ * deletion list.
++ */
++static int insert_dead_orphan(struct ubifs_info *c, ino_t inum)
++{
++	struct ubifs_orphan *orphan, *o;
++	struct rb_node **p, *parent = NULL;
++
++	orphan = kzalloc(sizeof(struct ubifs_orphan), GFP_KERNEL);
++	if (!orphan)
++		return -ENOMEM;
++	orphan->inum = inum;
++
++	p = &c->orph_tree.rb_node;
++	while (*p) {
++		parent = *p;
++		o = rb_entry(parent, struct ubifs_orphan, rb);
++		if (inum < o->inum)
++			p = &(*p)->rb_left;
++		else if (inum > o->inum)
++			p = &(*p)->rb_right;
++		else {
++			/* Already added - no problem */
++			kfree(orphan);
++			return 0;
++		}
++	}
++	c->tot_orphans += 1;
++	rb_link_node(&orphan->rb, parent, p);
++	rb_insert_color(&orphan->rb, &c->orph_tree);
++	list_add_tail(&orphan->list, &c->orph_list);
++	orphan->dnext = c->orph_dnext;
++	c->orph_dnext = orphan;
++	dbg_mnt("ino %lu, new %d, tot %d",
++		inum, c->new_orphans, c->tot_orphans);
++	return 0;
++}
++
++/**
++ * do_kill_orphans - remove orphan inodes from the index.
++ * @c: UBIFS file-system description object
++ * @sleb: scanned LEB
++ * @last_cmt_no: cmt_no of last orph node read is passed and returned here
++ * @outofdate: whether the LEB is out of date is returned here
++ * @last_flagged: whether the end orph node is encountered
++ *
++ * This function is a helper to the 'kill_orphans()' function. It goes through
++ * every orphan node in a LEB and for every inode number recorded, removes
++ * all keys for that inode from the TNC.
++ */
++static int do_kill_orphans(struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++			   unsigned long long *last_cmt_no, int *outofdate,
++			   int *last_flagged)
++{
++	struct ubifs_scan_node *snod;
++	struct ubifs_orph_node *orph;
++	unsigned long long cmt_no;
++	ino_t inum;
++	int i, n, err, first = 1;
++
++	list_for_each_entry(snod, &sleb->nodes, list) {
++		if (snod->type != UBIFS_ORPH_NODE) {
++			ubifs_err("invalid node type %d in orphan area at "
++				  "%d:%d", snod->type, sleb->lnum, snod->offs);
++			dbg_dump_node(c, snod->node);
++			return -EINVAL;
++		}
++
++		orph = snod->node;
++
++		/* Check commit number */
++		cmt_no = le64_to_cpu(orph->cmt_no) & LLONG_MAX;
++		/*
++		 * The commit number on the master node may be less, because
++		 * of a failed commit. If there are several failed commits in a
++		 * row, the commit number written on orph nodes will continue to
++		 * increase (because the commit number is adjusted here) even
++		 * though the commit number on the master node stays the same
++		 * because the master node has not been re-written.
++		 */
++		if (cmt_no > c->cmt_no)
++			c->cmt_no = cmt_no;
++		if (cmt_no < *last_cmt_no && *last_flagged) {
++			/*
++			 * The last orph node had a higher commit number and was
++			 * flagged as the last written for that commit number.
++			 * That makes this orph node, out of date.
++			 */
++			if (!first) {
++				ubifs_err("out of order commit number %llu in "
++					  "orphan node at %d:%d",
++					  cmt_no, sleb->lnum, snod->offs);
++				dbg_dump_node(c, snod->node);
++				return -EINVAL;
++			}
++			dbg_rcvry("out of date LEB %d", sleb->lnum);
++			*outofdate = 1;
++			return 0;
++		}
++
++		if (first)
++			first = 0;
++
++		n = (le32_to_cpu(orph->ch.len) - UBIFS_ORPH_NODE_SZ) >> 3;
++		for (i = 0; i < n; i++) {
++			inum = le64_to_cpu(orph->inos[i]);
++			dbg_rcvry("deleting orphaned inode %lu", inum);
++			err = ubifs_tnc_remove_ino(c, inum);
++			if (err)
++				return err;
++			err = insert_dead_orphan(c, inum);
++			if (err)
++				return err;
++		}
++
++		*last_cmt_no = cmt_no;
++		if (le64_to_cpu(orph->cmt_no) & (1ULL << 63)) {
++			dbg_rcvry("last orph node for commit %llu at %d:%d",
++				  cmt_no, sleb->lnum, snod->offs);
++			*last_flagged = 1;
++		} else
++			*last_flagged = 0;
++	}
++
++	return 0;
++}
++
++/**
++ * kill_orphans - remove all orphan inodes from the index.
++ * @c: UBIFS file-system description object
++ *
++ * If recovery is required, then orphan inodes recorded during the previous
++ * session (which ended with an unclean unmount) must be deleted from the index.
++ * This is done by updating the TNC, but since the index is not updated until
++ * the next commit, the LEBs where the orphan information is recorded are not
++ * erased until the next commit.
++ */
++static int kill_orphans(struct ubifs_info *c)
++{
++	unsigned long long last_cmt_no = 0;
++	int lnum, err = 0, outofdate = 0, last_flagged = 0;
++
++	c->ohead_lnum = c->orph_first;
++	c->ohead_offs = 0;
++	/* Check no-orphans flag and skip this if no orphans */
++	if (c->no_orphs) {
++		dbg_rcvry("no orphans");
++		return 0;
++	}
++	/*
++	 * Orph nodes always start at c->orph_first and are written to each
++	 * successive LEB in turn. Generally unused LEBs will have been unmapped
++	 * but may contain out of date orph nodes if the unmap didn't go
++	 * through. In addition, the last orph node written for each commit is
++	 * marked (top bit of orph->cmt_no is set to 1). It is possible that
++	 * there are orph nodes from the next commit (i.e. the commit did not
++	 * complete successfully). In that case, no orphans will have been lost
++	 * due to the way that orphans are written, and any orphans added will
++	 * be valid orphans anyway and so can be deleted.
++	 */
++	for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
++		struct ubifs_scan_leb *sleb;
++
++		dbg_rcvry("LEB %d", lnum);
++		sleb = ubifs_scan(c, lnum, 0, c->sbuf);
++		if (IS_ERR(sleb)) {
++			sleb = ubifs_recover_leb(c, lnum, 0, c->sbuf, 0);
++			if (IS_ERR(sleb)) {
++				err = PTR_ERR(sleb);
++				break;
++			}
++		}
++		err = do_kill_orphans(c, sleb, &last_cmt_no, &outofdate,
++				      &last_flagged);
++		if (err || outofdate) {
++			ubifs_scan_destroy(sleb);
++			break;
++		}
++		if (sleb->endpt) {
++			c->ohead_lnum = lnum;
++			c->ohead_offs = sleb->endpt;
++		}
++		ubifs_scan_destroy(sleb);
++	}
++	return err;
++}
++
++/**
++ * ubifs_mount_orphans - delete orphan inodes and erase LEBs that recorded them.
++ * @c: UBIFS file-system description object
++ * @unclean: indicates recovery from unclean unmount
++ * @read_only: indicates read only mount
++ *
++ * This function is called when mounting to erase orphans from the previous
++ * session. If UBIFS was not unmounted cleanly, then the inodes recorded as
++ * orphans are deleted.
++ */
++int ubifs_mount_orphans(struct ubifs_info *c, int unclean, int read_only)
++{
++	int err = 0;
++
++	c->max_orphans = tot_avail_orphs(c);
++
++	if (!read_only) {
++		c->orph_buf = vmalloc(c->leb_size);
++		if (!c->orph_buf)
++			return -ENOMEM;
++	}
++
++	if (unclean)
++		err = kill_orphans(c);
++	else if (!read_only)
++		err = clear_orphans(c);
++
++	return err;
++}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++
++struct check_orphan {
++	struct rb_node rb;
++	ino_t inum;
++};
++
++struct check_info {
++	unsigned long last_ino;
++	unsigned long tot_inos;
++	unsigned long missing;
++	unsigned long long leaf_cnt;
++	struct ubifs_ino_node *node;
++	struct rb_root root;
++};
++
++static int dbg_find_orphan(struct ubifs_info *c, ino_t inum)
++{
++	struct ubifs_orphan *o;
++	struct rb_node *p;
++
++	spin_lock(&c->orphan_lock);
++	p = c->orph_tree.rb_node;
++	while (p) {
++		o = rb_entry(p, struct ubifs_orphan, rb);
++		if (inum < o->inum)
++			p = p->rb_left;
++		else if (inum > o->inum)
++			p = p->rb_right;
++		else {
++			spin_unlock(&c->orphan_lock);
++			return 1;
++		}
++	}
++	spin_unlock(&c->orphan_lock);
++	return 0;
++}
++
++static int dbg_ins_check_orphan(struct rb_root *root, ino_t inum)
++{
++	struct check_orphan *orphan, *o;
++	struct rb_node **p, *parent = NULL;
++
++	orphan = kzalloc(sizeof(struct check_orphan), GFP_NOFS);
++	if (!orphan)
++		return -ENOMEM;
++	orphan->inum = inum;
++
++	p = &root->rb_node;
++	while (*p) {
++		parent = *p;
++		o = rb_entry(parent, struct check_orphan, rb);
++		if (inum < o->inum)
++			p = &(*p)->rb_left;
++		else if (inum > o->inum)
++			p = &(*p)->rb_right;
++		else {
++			kfree(orphan);
++			return 0;
++		}
++	}
++	rb_link_node(&orphan->rb, parent, p);
++	rb_insert_color(&orphan->rb, root);
++	return 0;
++}
++
++static int dbg_find_check_orphan(struct rb_root *root, ino_t inum)
++{
++	struct check_orphan *o;
++	struct rb_node *p;
++
++	p = root->rb_node;
++	while (p) {
++		o = rb_entry(p, struct check_orphan, rb);
++		if (inum < o->inum)
++			p = p->rb_left;
++		else if (inum > o->inum)
++			p = p->rb_right;
++		else
++			return 1;
++	}
++	return 0;
++}
++
++static void dbg_free_check_tree(struct rb_root *root)
++{
++	struct rb_node *this = root->rb_node;
++	struct check_orphan *o;
++
++	while (this) {
++		if (this->rb_left) {
++			this = this->rb_left;
++			continue;
++		} else if (this->rb_right) {
++			this = this->rb_right;
++			continue;
++		}
++		o = rb_entry(this, struct check_orphan, rb);
++		this = rb_parent(this);
++		if (this) {
++			if (this->rb_left == &o->rb)
++				this->rb_left = NULL;
++			else
++				this->rb_right = NULL;
++		}
++		kfree(o);
++	}
++}
++
++static int dbg_orphan_check(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++			    void *priv)
++{
++	struct check_info *ci = priv;
++	ino_t inum;
++	int err;
++
++	inum = key_inum(c, &zbr->key);
++	if (inum != ci->last_ino) {
++		/* Lowest node type is the inode node, so it comes first */
++		if (key_type(c, &zbr->key) != UBIFS_INO_KEY)
++			ubifs_err("found orphan node ino %lu, type %d", inum,
++				  key_type(c, &zbr->key));
++		ci->last_ino = inum;
++		ci->tot_inos += 1;
++		err = ubifs_tnc_read_node(c, zbr, ci->node);
++		if (err) {
++			ubifs_err("node read failed, error %d", err);
++			return err;
++		}
++		if (ci->node->nlink == 0)
++			/* Must be recorded as an orphan */
++			if (!dbg_find_check_orphan(&ci->root, inum) &&
++			    !dbg_find_orphan(c, inum)) {
++				ubifs_err("missing orphan, ino %lu", inum);
++				ci->missing += 1;
++			}
++	}
++	ci->leaf_cnt += 1;
++	return 0;
++}
++
++static int dbg_read_orphans(struct check_info *ci, struct ubifs_scan_leb *sleb)
++{
++	struct ubifs_scan_node *snod;
++	struct ubifs_orph_node *orph;
++	ino_t inum;
++	int i, n, err;
++
++	list_for_each_entry(snod, &sleb->nodes, list) {
++		cond_resched();
++		if (snod->type != UBIFS_ORPH_NODE)
++			continue;
++		orph = snod->node;
++		n = (le32_to_cpu(orph->ch.len) - UBIFS_ORPH_NODE_SZ) >> 3;
++		for (i = 0; i < n; i++) {
++			inum = le64_to_cpu(orph->inos[i]);
++			err = dbg_ins_check_orphan(&ci->root, inum);
++			if (err)
++				return err;
++		}
++	}
++	return 0;
++}
++
++static int dbg_scan_orphans(struct ubifs_info *c, struct check_info *ci)
++{
++	int lnum, err = 0;
++
++	/* Check no-orphans flag and skip this if no orphans */
++	if (c->no_orphs)
++		return 0;
++
++	for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) {
++		struct ubifs_scan_leb *sleb;
++
++		sleb = ubifs_scan(c, lnum, 0, c->dbg_buf);
++		if (IS_ERR(sleb)) {
++			err = PTR_ERR(sleb);
++			break;
++		}
++
++		err = dbg_read_orphans(ci, sleb);
++		ubifs_scan_destroy(sleb);
++		if (err)
++			break;
++	}
++
++	return err;
++}
++
++static int dbg_check_orphans(struct ubifs_info *c)
++{
++	struct check_info ci;
++	int err;
++
++	if (!(ubifs_chk_flags & UBIFS_CHK_ORPH))
++		return 0;
++
++	ci.last_ino = 0;
++	ci.tot_inos = 0;
++	ci.missing  = 0;
++	ci.leaf_cnt = 0;
++	ci.root = RB_ROOT;
++	ci.node = kmalloc(UBIFS_MAX_INO_NODE_SZ, GFP_NOFS);
++	if (!ci.node) {
++		ubifs_err("out of memory");
++		return -ENOMEM;
++	}
++
++	err = dbg_scan_orphans(c, &ci);
++	if (err)
++		goto out;
++
++	err = dbg_walk_index(c, &dbg_orphan_check, NULL, &ci);
++	if (err) {
++		ubifs_err("cannot scan TNC, error %d", err);
++		goto out;
++	}
++
++	if (ci.missing) {
++		ubifs_err("%lu missing orphan(s)", ci.missing);
++		err = -EINVAL;
++		goto out;
++	}
++
++	dbg_cmt("last inode number is %lu", ci.last_ino);
++	dbg_cmt("total number of inodes is %lu", ci.tot_inos);
++	dbg_cmt("total number of leaf nodes is %llu", ci.leaf_cnt);
++
++out:
++	dbg_free_check_tree(&ci.root);
++	kfree(ci.node);
++	return err;
++}
++
++#endif /* CONFIG_UBIFS_FS_DEBUG */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/recovery.c avr32-2.6/fs/ubifs/recovery.c
+--- linux-2.6.25.6/fs/ubifs/recovery.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/recovery.c	2008-06-12 15:09:45.475816115 +0200
+@@ -0,0 +1,1537 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements functions needed to recover from unclean un-mounts.
++ * When UBIFS is mounted, it checks a flag on the master node to determine if
++ * an un-mount was completed sucessfully. If not, the process of mounting
++ * incorparates additional checking and fixing of on-flash data structures.
++ * UBIFS always cleans away all remnants of an unclean un-mount, so that
++ * errors do not accumulate. However UBIFS defers recovery if it is mounted
++ * read-only, and the flash is not modified in that case.
++ */
++
++#include <linux/crc32.h>
++#include "ubifs.h"
++
++/**
++ * is_empty - determine whether a buffer is empty (contains all 0xff).
++ * @buf: buffer to clean
++ * @len: length of buffer
++ *
++ * This function returns %1 if the buffer is empty (contains all 0xff) otherwise
++ * %0 is returned.
++ */
++static int is_empty(void *buf, int len)
++{
++	uint8_t *p = buf;
++	int i;
++
++	for (i = 0; i < len; i++)
++		if (*p++ != 0xff)
++			return 0;
++	return 1;
++}
++
++/**
++ * get_master_node - get the last valid master node allowing for corruption.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @pbuf: buffer containing the LEB read, is returned here
++ * @mst: master node, if found, is returned here
++ * @cor: corruption, if found, is returned here
++ *
++ * This function allocates a buffer, reads the LEB into it, and finds and
++ * returns the last valid master node allowing for one area of corruption.
++ * The corrupt area, if there is one, must be consistent with the assumption
++ * that it is the result of an unclean unmount while the master node was being
++ * written. Under those circumstances, it is valid to use the previously written
++ * master node.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int get_master_node(const struct ubifs_info *c, int lnum, void **pbuf,
++			   struct ubifs_mst_node **mst, void **cor)
++{
++	const int sz = c->mst_node_alsz;
++	int err, offs, len;
++	void *sbuf, *buf;
++
++	sbuf = vmalloc(c->leb_size);
++	if (!sbuf)
++		return -ENOMEM;
++
++	err = ubi_read(c->ubi, lnum, sbuf, 0, c->leb_size);
++	if (err && err != -EBADMSG)
++		goto out_free;
++
++	/* Find the first position that is definitely not a node */
++	offs = 0;
++	buf = sbuf;
++	len = c->leb_size;
++	while (offs + UBIFS_MST_NODE_SZ <= c->leb_size) {
++		struct ubifs_ch *ch = buf;
++
++		if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC)
++			break;
++		offs += sz;
++		buf  += sz;
++		len  -= sz;
++	}
++	/* See if there was a valid master node before that */
++	if (offs) {
++		int ret;
++
++		offs -= sz;
++		buf  -= sz;
++		len  += sz;
++		ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);
++		if (ret != SCANNED_A_NODE && offs) {
++			/* Could have been corruption so check one place back */
++			offs -= sz;
++			buf  -= sz;
++			len  += sz;
++			ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);
++			if (ret != SCANNED_A_NODE)
++				/*
++				 * We accept only one area of corruption because
++				 * we are assuming that it was caused while
++				 * trying to write a master node.
++				 */
++				goto out_err;
++		}
++		if (ret == SCANNED_A_NODE) {
++			struct ubifs_ch *ch = buf;
++
++			if (ch->node_type != UBIFS_MST_NODE)
++				goto out_err;
++			dbg_rcvry("found a master node at %d:%d", lnum, offs);
++			*mst = buf;
++			offs += sz;
++			buf  += sz;
++			len  -= sz;
++		}
++	}
++	/* Check for corruption */
++	if (offs < c->leb_size) {
++		if (!is_empty(buf, min_t(int, len, sz))) {
++			*cor = buf;
++			dbg_rcvry("found corruption at %d:%d", lnum, offs);
++		}
++		offs += sz;
++		buf  += sz;
++		len  -= sz;
++	}
++	/* Check remaining empty space */
++	if (offs < c->leb_size)
++		if (!is_empty(buf, len))
++			goto out_err;
++	*pbuf = sbuf;
++	return 0;
++
++out_err:
++	err = -EINVAL;
++out_free:
++	vfree(sbuf);
++	*mst = NULL;
++	*cor = NULL;
++	return err;
++}
++
++/**
++ * write_rcvrd_mst_node - write recovered master node.
++ * @c: UBIFS file-system description object
++ * @mst: master node
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int write_rcvrd_mst_node(struct ubifs_info *c,
++				struct ubifs_mst_node *mst)
++{
++	int err = 0, lnum = UBIFS_MST_LNUM, sz = c->mst_node_alsz;
++	uint32_t save_flags;
++
++	dbg_rcvry("recovery");
++
++	save_flags = mst->flags;
++	mst->flags = cpu_to_le32(le32_to_cpu(mst->flags) | UBIFS_MST_RCVRY);
++
++	ubifs_prepare_node(c, mst, UBIFS_MST_NODE_SZ, 1);
++	err = ubi_leb_change(c->ubi, lnum, mst, sz, UBI_SHORTTERM);
++	if (err)
++		goto out;
++	err = ubi_leb_change(c->ubi, lnum + 1, mst, sz, UBI_SHORTTERM);
++	if (err)
++		goto out;
++out:
++	mst->flags = save_flags;
++	return err;
++}
++
++/**
++ * ubifs_recover_master_node - recover the master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function recovers the master node from corruption that may occur due to
++ * an unclean unmount.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_recover_master_node(struct ubifs_info *c)
++{
++	void *buf1 = NULL, *buf2 = NULL, *cor1 = NULL, *cor2 = NULL;
++	struct ubifs_mst_node *mst1 = NULL, *mst2 = NULL, *mst;
++	const int sz = c->mst_node_alsz;
++	int err, offs1, offs2;
++
++	dbg_rcvry("recovery");
++
++	err = get_master_node(c, UBIFS_MST_LNUM, &buf1, &mst1, &cor1);
++	if (err)
++		goto out_free;
++
++	err = get_master_node(c, UBIFS_MST_LNUM + 1, &buf2, &mst2, &cor2);
++	if (err)
++		goto out_free;
++
++	if (mst1) {
++		offs1 = (void *)mst1 - buf1;
++		if ((le32_to_cpu(mst1->flags) & UBIFS_MST_RCVRY) &&
++		    (offs1 == 0 && !cor1)) {
++			/*
++			 * mst1 was written by recovery at offset 0 with no
++			 * corruption.
++			 */
++			dbg_rcvry("recovery recovery");
++			mst = mst1;
++		} else if (mst2) {
++			offs2 = (void *)mst2 - buf2;
++			if (offs1 == offs2) {
++				/* Same offset, so must be the same */
++				if (memcmp((void *)mst1 + UBIFS_CH_SZ,
++					   (void *)mst2 + UBIFS_CH_SZ,
++					   UBIFS_MST_NODE_SZ - UBIFS_CH_SZ))
++					goto out_err;
++				mst = mst1;
++			} else if (offs2 + sz == offs1) {
++				/* 1st LEB was written, 2nd was not */
++				if (cor1)
++					goto out_err;
++				mst = mst1;
++			} else if (offs1 == 0 && offs2 + sz >= c->leb_size) {
++				/* 1st LEB was unmapped and written, 2nd not */
++				if (cor1)
++					goto out_err;
++				mst = mst1;
++			} else
++				goto out_err;
++		} else {
++			/*
++			 * 2nd LEB was unmapped and about to be written, so
++			 * there must be only one master node in the first LEB
++			 * and no corruption.
++			 */
++			if (offs1 != 0 || cor1)
++				goto out_err;
++			mst = mst1;
++		}
++	} else {
++		if (!mst2)
++			goto out_err;
++		/*
++		 * 1st LEB was unmapped and about to be written, so there must
++		 * be no room left in 2nd LEB.
++		 */
++		offs2 = (void *)mst2 - buf2;
++		if (offs2 + sz + sz <= c->leb_size)
++			goto out_err;
++		mst = mst2;
++	}
++
++	dbg_rcvry("recovered master node from LEB %d",
++		  (mst == mst1 ? UBIFS_MST_LNUM : UBIFS_MST_LNUM + 1));
++
++	memcpy(c->mst_node, mst, UBIFS_MST_NODE_SZ);
++
++	if ((c->vfs_sb->s_flags & MS_RDONLY)) {
++		/* Read-only mode. Keep a copy for switching to rw mode */
++		c->rcvrd_mst_node = kmalloc(sz, GFP_KERNEL);
++		if (!c->rcvrd_mst_node) {
++			err = -ENOMEM;
++			goto out_free;
++		}
++		memcpy(c->rcvrd_mst_node, c->mst_node, UBIFS_MST_NODE_SZ);
++	} else {
++		/* Write the recovered master node */
++		c->max_sqnum = le64_to_cpu(mst->ch.sqnum) - 1;
++		err = write_rcvrd_mst_node(c, c->mst_node);
++		if (err)
++			goto out_free;
++	}
++
++	vfree(buf2);
++	vfree(buf1);
++
++	return 0;
++
++out_err:
++	err = -EINVAL;
++out_free:
++	ubifs_err("failed to recover master node");
++	if (mst1) {
++		dbg_err("dumping first master node");
++		dbg_dump_node(c, mst1);
++	}
++	if (mst2) {
++		dbg_err("dumping second master node");
++		dbg_dump_node(c, mst2);
++	}
++	vfree(buf2);
++	vfree(buf1);
++	return err;
++}
++
++/**
++ * ubifs_write_rcvrd_mst_node - write the recovered master node.
++ * @c: UBIFS file-system description object
++ *
++ * This function writes the master node that was recovered during mounting in
++ * read-only mode and must now be written because we are remounting rw.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_write_rcvrd_mst_node(struct ubifs_info *c)
++{
++	int err;
++
++	if (!c->rcvrd_mst_node)
++		return 0;
++	c->rcvrd_mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
++	c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
++	err = write_rcvrd_mst_node(c, c->rcvrd_mst_node);
++	if (err)
++		return err;
++	kfree(c->rcvrd_mst_node);
++	c->rcvrd_mst_node = NULL;
++	return 0;
++}
++
++/**
++ * is_last_write - determine if an offset was in the last write to a LEB.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to check
++ * @offs: offset to check
++ *
++ * This function returns %1 if @offs was in the last write to the LEB whose data
++ * is in @buf, otherwise %0 is returned.  The determination is made by checking
++ * for subsequent empty space starting from the next min_io_size boundary (or a
++ * bit less than the common header size if min_io_size is one).
++ */
++static int is_last_write(const struct ubifs_info *c, void *buf, int offs)
++{
++	int empty_offs;
++	int check_len;
++	uint8_t *p;
++
++	if (c->min_io_size == 1) {
++		check_len = c->leb_size - offs;
++		p = buf + check_len;
++		for (; check_len > 0; check_len--)
++			if (*--p != 0xff)
++				break;
++		/*
++		 * 'check_len' is the size of the corruption which cannot be
++		 * more than the size of 1 node if it was caused by an unclean
++		 * unmount.
++		 */
++		if (check_len > UBIFS_MAX_NODE_SZ)
++			return 0;
++		return 1;
++	}
++
++	/*
++	 * Round up to the next c->min_io_size boundary i.e. 'offs' is in the
++	 * last wbuf written. After that should be empty space.
++	 */
++	empty_offs = ALIGN(offs + 1, c->min_io_size);
++	check_len = c->leb_size - empty_offs;
++	p = buf + empty_offs - offs;
++
++	for (; check_len > 0; check_len--)
++		if (*p++ != 0xff)
++			return 0;
++	return 1;
++}
++
++/**
++ * clean_buf - clean the data from an LEB sitting in a buffer.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to clean
++ * @lnum: LEB number to clean
++ * @offs: offset from which to clean
++ * @len: length of buffer
++ *
++ * This function pads up to the next min_io_size boundary (if there is one) and
++ * sets empty space to all 0xff. @buf, @offs and @len are updated to the next
++ * min_io_size boundary (if there is one).
++ */
++static void clean_buf(const struct ubifs_info *c, void **buf, int lnum,
++		      int *offs, int *len)
++{
++	int empty_offs, pad_len;
++
++	lnum = lnum;
++	dbg_rcvry("cleaning corruption at %d:%d", lnum, *offs);
++
++	if (c->min_io_size == 1) {
++		memset(*buf, 0xff, c->leb_size - *offs);
++		return;
++	}
++
++	ubifs_assert(!(*offs & 7));
++	empty_offs = ALIGN(*offs, c->min_io_size);
++	pad_len = empty_offs - *offs;
++	ubifs_pad(c, *buf, pad_len);
++	*offs += pad_len;
++	*buf += pad_len;
++	*len -= pad_len;
++	memset(*buf, 0xff, c->leb_size - empty_offs);
++}
++
++/**
++ * no_more_nodes - determine if there are no more nodes in a buffer.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to check
++ * @len: length of buffer
++ * @lnum: LEB number of the LEB from which @buf was read
++ * @offs: offset from which @buf was read
++ *
++ * This function scans @buf for more nodes and returns %0 is a node is found and
++ * %1 if no more nodes are found.
++ */
++static int no_more_nodes(const struct ubifs_info *c, void *buf, int len,
++			int lnum, int offs)
++{
++	int skip, next_offs = 0;
++
++	if (len > UBIFS_DATA_NODE_SZ) {
++		struct ubifs_ch *ch = buf;
++		int dlen = le32_to_cpu(ch->len);
++
++		if (ch->node_type == UBIFS_DATA_NODE && dlen >= UBIFS_CH_SZ &&
++		    dlen <= UBIFS_MAX_DATA_NODE_SZ)
++			/* The corrupt node looks like a data node */
++			next_offs = ALIGN(offs + dlen, 8);
++	}
++
++	if (c->min_io_size == 1)
++		skip = 8;
++	else
++		skip = ALIGN(offs + 1, c->min_io_size) - offs;
++
++	offs += skip;
++	buf += skip;
++	len -= skip;
++	while (len > 8) {
++		struct ubifs_ch *ch = buf;
++		uint32_t magic = le32_to_cpu(ch->magic);
++		int ret;
++
++		if (magic == UBIFS_NODE_MAGIC) {
++			ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 1);
++			if (ret == SCANNED_A_NODE || ret > 0) {
++				/*
++				 * There is a small chance this is just data in
++				 * a data node, so check that possibility. e.g.
++				 * this is part of a file that itself contains
++				 * a UBIFS image.
++				 */
++				if (next_offs && offs + le32_to_cpu(ch->len) <=
++				    next_offs)
++					continue;
++				dbg_rcvry("unexpected node at %d:%d", lnum,
++					  offs);
++				return 0;
++			}
++		}
++		offs += 8;
++		buf += 8;
++		len -= 8;
++	}
++	return 1;
++}
++
++/**
++ * fix_unclean_leb - fix an unclean LEB.
++ * @c: UBIFS file-system description object
++ * @sleb: scanned LEB information
++ * @start: offset where scan started
++ */
++static int fix_unclean_leb(struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++			   int start)
++{
++	int lnum = sleb->lnum, endpt = start;
++
++	/* Get the end offset of the last node we are keeping */
++	if (!list_empty(&sleb->nodes)) {
++		struct ubifs_scan_node *snod;
++
++		snod = list_entry(sleb->nodes.prev,
++				  struct ubifs_scan_node, list);
++		endpt = snod->offs + snod->len;
++	}
++
++	if ((c->vfs_sb->s_flags & MS_RDONLY) && !c->remounting_rw) {
++		/* Add to recovery list */
++		struct ubifs_unclean_leb *ucleb;
++
++		dbg_rcvry("need to fix LEB %d start %d endpt %d",
++			  lnum, start, sleb->endpt);
++		ucleb = kzalloc(sizeof(struct ubifs_unclean_leb), GFP_NOFS);
++		if (!ucleb)
++			return -ENOMEM;
++		ucleb->lnum = lnum;
++		ucleb->endpt = endpt;
++		list_add_tail(&ucleb->list, &c->unclean_leb_list);
++	} else {
++		/* Write the fixed LEB back to flash */
++		int err;
++
++		dbg_rcvry("fixing LEB %d start %d endpt %d",
++			  lnum, start, sleb->endpt);
++		if (endpt == 0) {
++			err = ubifs_leb_unmap(c, lnum);
++			if (err)
++				return err;
++		} else {
++			int len = ALIGN(endpt, c->min_io_size);
++
++			if (start) {
++				err = ubi_read(c->ubi, lnum, sleb->buf, 0,
++					       start);
++				if (err)
++					return err;
++			}
++			/* Pad to min_io_size */
++			if (len > endpt) {
++				int pad_len = len - ALIGN(endpt, 8);
++
++				if (pad_len > 0) {
++					void *buf = sleb->buf + len - pad_len;
++
++					ubifs_pad(c, buf, pad_len);
++				}
++			}
++			err = ubi_leb_change(c->ubi, lnum, sleb->buf, len,
++					     UBI_UNKNOWN);
++			if (err)
++				return err;
++		}
++	}
++	return 0;
++}
++
++/**
++ * drop_incomplete_group - drop nodes from an incomplete group.
++ * @sleb: scanned LEB information
++ * @offs: offset of dropped nodes is returned here
++ *
++ * This function returns %1 if nodes are dropped and %0 otherwise.
++ */
++static int drop_incomplete_group(struct ubifs_scan_leb *sleb, int *offs)
++{
++	int dropped = 0;
++
++	while (!list_empty(&sleb->nodes)) {
++		struct ubifs_scan_node *snod;
++		struct ubifs_ch *ch;
++
++		snod = list_entry(sleb->nodes.prev, struct ubifs_scan_node,
++				  list);
++		ch = snod->node;
++		if (ch->group_type != UBIFS_IN_NODE_GROUP)
++			return dropped;
++		dbg_rcvry("dropping node at %d:%d", sleb->lnum, snod->offs);
++		*offs = snod->offs;
++		list_del(&snod->list);
++		kfree(snod);
++		sleb->nodes_cnt -= 1;
++		dropped = 1;
++	}
++	return dropped;
++}
++
++/**
++ * ubifs_recover_leb - scan and recover a LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @offs: offset
++ * @sbuf: LEB-sized buffer to use
++ * @grouped: nodes may be grouped for recovery
++ *
++ * This function does a scan of a LEB, but caters for errors that might have
++ * been caused by the unclean unmount from which we are attempting to recover.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++struct ubifs_scan_leb *ubifs_recover_leb(struct ubifs_info *c, int lnum,
++					 int offs, void *sbuf, int grouped)
++{
++	int err, len = c->leb_size - offs, need_clean = 0, quiet = 1;
++	int empty_chkd = 0, start = offs;
++	struct ubifs_scan_leb *sleb;
++	void *buf = sbuf + offs;
++
++	dbg_rcvry("%d:%d", lnum, offs);
++
++	sleb = ubifs_start_scan(c, lnum, offs, sbuf);
++	if (IS_ERR(sleb))
++		return sleb;
++
++	if (sleb->ecc)
++		need_clean = 1;
++
++	while (len >= 8) {
++		int ret;
++
++		dbg_scan("look at LEB %d:%d (%d bytes left)",
++			 lnum, offs, len);
++
++		cond_resched();
++
++		/*
++		 * Scan quietly until there is an error from which we cannot
++		 * recover
++		 */
++		ret = ubifs_scan_a_node(c, buf, len, lnum, offs, quiet);
++
++		if (ret == SCANNED_A_NODE) {
++			/* A valid node, and not a padding node */
++			struct ubifs_ch *ch = buf;
++			int node_len;
++
++			err = ubifs_add_snod(c, sleb, buf, offs);
++			if (err)
++				goto error;
++			node_len = ALIGN(le32_to_cpu(ch->len), 8);
++			offs += node_len;
++			buf += node_len;
++			len -= node_len;
++			continue;
++		}
++
++		if (ret > 0) {
++			/* Padding bytes or a valid padding node */
++			offs += ret;
++			buf += ret;
++			len -= ret;
++			continue;
++		}
++
++		if (ret == SCANNED_EMPTY_SPACE) {
++			if (!is_empty(buf, len)) {
++				if (!is_last_write(c, buf, offs))
++					break;
++				clean_buf(c, &buf, lnum, &offs, &len);
++				need_clean = 1;
++			}
++			empty_chkd = 1;
++			break;
++		}
++
++		if (ret == SCANNED_GARBAGE || ret == SCANNED_A_BAD_PAD_NODE)
++			if (is_last_write(c, buf, offs)) {
++				clean_buf(c, &buf, lnum, &offs, &len);
++				need_clean = 1;
++				empty_chkd = 1;
++				break;
++			}
++
++		if (ret == SCANNED_A_CORRUPT_NODE)
++			if (no_more_nodes(c, buf, len, lnum, offs)) {
++				clean_buf(c, &buf, lnum, &offs, &len);
++				need_clean = 1;
++				empty_chkd = 1;
++				break;
++			}
++
++		if (quiet) {
++			/* Redo the last scan but noisily */
++			quiet = 0;
++			continue;
++		}
++
++		switch (ret) {
++		case SCANNED_GARBAGE:
++			dbg_err("garbage");
++			goto corrupted;
++		case SCANNED_A_CORRUPT_NODE:
++		case SCANNED_A_BAD_PAD_NODE:
++			dbg_err("bad node");
++			goto corrupted;
++		default:
++			dbg_err("unknown");
++			goto corrupted;
++		}
++	}
++
++	if (!empty_chkd && !is_empty(buf, len)) {
++		if (is_last_write(c, buf, offs)) {
++			clean_buf(c, &buf, lnum, &offs, &len);
++			need_clean = 1;
++		} else {
++			ubifs_err("corrupt empty space at LEB %d:%d",
++				  lnum, offs);
++			goto corrupted;
++		}
++	}
++
++	/* Drop nodes from incomplete group */
++	if (grouped && drop_incomplete_group(sleb, &offs)) {
++		buf = sbuf + offs;
++		len = c->leb_size - offs;
++		clean_buf(c, &buf, lnum, &offs, &len);
++		need_clean = 1;
++	}
++
++	if (offs % c->min_io_size) {
++		clean_buf(c, &buf, lnum, &offs, &len);
++		need_clean = 1;
++	}
++
++	ubifs_end_scan(c, sleb, lnum, offs);
++
++	if (need_clean) {
++		err = fix_unclean_leb(c, sleb, start);
++		if (err)
++			goto error;
++	}
++
++	return sleb;
++
++corrupted:
++	ubifs_scanned_corruption(c, lnum, offs, buf);
++	err = -EUCLEAN;
++error:
++	ubifs_err("LEB %d scanning failed", lnum);
++	ubifs_scan_destroy(sleb);
++	return ERR_PTR(err);
++}
++
++/**
++ * get_cs_sqnum - get commit start sequence number.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of commit start node
++ * @offs: offset of commit start node
++ * @cs_sqnum: commit start sequence number is returned here
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int get_cs_sqnum(struct ubifs_info *c, int lnum, int offs,
++			unsigned long long *cs_sqnum)
++{
++	struct ubifs_cs_node *cs_node = NULL;
++	int err, ret;
++
++	dbg_rcvry("at %d:%d", lnum, offs);
++	cs_node = kmalloc(UBIFS_CS_NODE_SZ, GFP_KERNEL);
++	if (!cs_node)
++		return -ENOMEM;
++	if (c->leb_size - offs < UBIFS_CS_NODE_SZ)
++		goto out_err;
++	err = ubi_read(c->ubi, lnum, (void *)cs_node, offs, UBIFS_CS_NODE_SZ);
++	if (err && err != -EBADMSG)
++		goto out_free;
++	ret = ubifs_scan_a_node(c, cs_node, UBIFS_CS_NODE_SZ, lnum, offs, 0);
++	if (ret != SCANNED_A_NODE) {
++		dbg_err("Not a valid node");
++		goto out_err;
++	}
++	if (cs_node->ch.node_type != UBIFS_CS_NODE) {
++		dbg_err("Node a CS node, type is %d", cs_node->ch.node_type);
++		goto out_err;
++	}
++	if (le64_to_cpu(cs_node->cmt_no) != c->cmt_no) {
++		dbg_err("CS node cmt_no %llu != current cmt_no %llu",
++			(unsigned long long)le64_to_cpu(cs_node->cmt_no),
++			c->cmt_no);
++		goto out_err;
++	}
++	*cs_sqnum = le64_to_cpu(cs_node->ch.sqnum);
++	dbg_rcvry("commit start sqnum %llu", *cs_sqnum);
++	kfree(cs_node);
++	return 0;
++
++out_err:
++	err = -EINVAL;
++out_free:
++	ubifs_err("failed to get CS sqnum");
++	kfree(cs_node);
++	return err;
++}
++
++/**
++ * ubifs_recover_log_leb - scan and recover a log LEB.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number
++ * @offs: offset
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function does a scan of a LEB, but caters for errors that might have
++ * been caused by the unclean unmount from which we are attempting to recover.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++struct ubifs_scan_leb *ubifs_recover_log_leb(struct ubifs_info *c, int lnum,
++					     int offs, void *sbuf)
++{
++	struct ubifs_scan_leb *sleb;
++	int next_lnum;
++
++	dbg_rcvry("LEB %d", lnum);
++	next_lnum = lnum + 1;
++	if (next_lnum >= UBIFS_LOG_LNUM + c->log_lebs)
++		next_lnum = UBIFS_LOG_LNUM;
++	if (next_lnum != c->ltail_lnum) {
++		/*
++		 * We can only recover at the end of the log, so check that the
++		 * next log LEB is empty or out of date.
++		 */
++		sleb = ubifs_scan(c, next_lnum, 0, sbuf);
++		if (IS_ERR(sleb))
++			return sleb;
++		if (sleb->nodes_cnt) {
++			struct ubifs_scan_node *snod;
++			unsigned long long cs_sqnum = c->cs_sqnum;
++
++			snod = list_entry(sleb->nodes.next,
++					  struct ubifs_scan_node, list);
++			if (cs_sqnum == 0) {
++				int err;
++
++				err = get_cs_sqnum(c, lnum, offs, &cs_sqnum);
++				if (err) {
++					ubifs_scan_destroy(sleb);
++					return ERR_PTR(err);
++				}
++			}
++			if (snod->sqnum > cs_sqnum) {
++				ubifs_err("unrecoverable log corruption "
++					  "in LEB %d", lnum);
++				ubifs_scan_destroy(sleb);
++				return ERR_PTR(-EUCLEAN);
++			}
++		}
++		ubifs_scan_destroy(sleb);
++	}
++	return ubifs_recover_leb(c, lnum, offs, sbuf, 0);
++}
++
++/**
++ * recover_head - recover a head.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of head to recover
++ * @offs: offset of head to recover
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function ensures that there is no data on the flash at a head location.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int recover_head(const struct ubifs_info *c, int lnum, int offs,
++			void *sbuf)
++{
++	int len, err, need_clean = 0;
++
++	if (c->min_io_size > 1)
++		len = c->min_io_size;
++	else
++		len = 512;
++	if (offs + len > c->leb_size)
++		len = c->leb_size - offs;
++
++	if (!len)
++		return 0;
++
++	/* Read at the head location and check it is empty flash */
++	err = ubi_read(c->ubi, lnum, sbuf, offs, len);
++	if (err)
++		need_clean = 1;
++	else {
++		uint8_t *p = sbuf;
++
++		while (len--)
++			if (*p++ != 0xff) {
++				need_clean = 1;
++				break;
++			}
++	}
++
++	if (need_clean) {
++		dbg_rcvry("cleaning head at %d:%d", lnum, offs);
++		if (offs == 0)
++			return ubifs_leb_unmap(c, lnum);
++		err = ubi_read(c->ubi, lnum, sbuf, 0, offs);
++		if (err)
++			return err;
++		return ubi_leb_change(c->ubi, lnum, sbuf, offs, UBI_UNKNOWN);
++	}
++
++	return 0;
++}
++
++/**
++ * ubifs_recover_inl_heads - recover index and LPT heads.
++ * @c: UBIFS file-system description object
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function ensures that there is no data on the flash at the index and
++ * LPT head locations.
++ *
++ * This deals with the recovery of a half-completed journal commit. UBIFS is
++ * careful never to overwrite the last version of the index or the LPT. Because
++ * the index and LPT are wandering trees, data from a half-completed commit will
++ * not be referenced anywhere in UBIFS. The data will be either in LEBs that are
++ * assumed to be empty and will be unmapped anyway before use, or in the index
++ * and LPT heads.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_recover_inl_heads(const struct ubifs_info *c, void *sbuf)
++{
++	int err;
++
++	ubifs_assert(!(c->vfs_sb->s_flags & MS_RDONLY) || c->remounting_rw);
++
++	dbg_rcvry("checking index head at %d:%d", c->ihead_lnum, c->ihead_offs);
++	err = recover_head(c, c->ihead_lnum, c->ihead_offs, sbuf);
++	if (err)
++		return err;
++
++	dbg_rcvry("checking LPT head at %d:%d", c->nhead_lnum, c->nhead_offs);
++	err = recover_head(c, c->nhead_lnum, c->nhead_offs, sbuf);
++	if (err)
++		return err;
++
++	return 0;
++}
++
++/**
++ *  clean_an_unclean_leb - read and write a LEB to remove corruption.
++ * @c: UBIFS file-system description object
++ * @ucleb: unclean LEB information
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function reads a LEB up to a point pre-determined by the mount recovery,
++ * checks the nodes, and writes the result back to the flash, thereby cleaning
++ * off any following corruption, or non-fatal ECC errors.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int clean_an_unclean_leb(const struct ubifs_info *c,
++				struct ubifs_unclean_leb *ucleb, void *sbuf)
++{
++	int err, lnum = ucleb->lnum, offs = 0, len = ucleb->endpt, quiet = 1;
++	void *buf = sbuf;
++
++	dbg_rcvry("LEB %d len %d", lnum, len);
++
++	if (len == 0) {
++		/* Nothing to read, just unmap it */
++		err = ubifs_leb_unmap(c, lnum);
++		if (err)
++			return err;
++		return 0;
++	}
++
++	err = ubi_read(c->ubi, lnum, buf, offs, len);
++	if (err && err != -EBADMSG)
++		return err;
++
++	while (len >= 8) {
++		int ret;
++
++		cond_resched();
++
++		/* Scan quietly until there is an error */
++		ret = ubifs_scan_a_node(c, buf, len, lnum, offs, quiet);
++
++		if (ret == SCANNED_A_NODE) {
++			/* A valid node, and not a padding node */
++			struct ubifs_ch *ch = buf;
++			int node_len;
++
++			node_len = ALIGN(le32_to_cpu(ch->len), 8);
++			offs += node_len;
++			buf += node_len;
++			len -= node_len;
++			continue;
++		}
++
++		if (ret > 0) {
++			/* Padding bytes or a valid padding node */
++			offs += ret;
++			buf += ret;
++			len -= ret;
++			continue;
++		}
++
++		if (ret == SCANNED_EMPTY_SPACE) {
++			ubifs_err("unexpected empty space at %d:%d",
++				  lnum, offs);
++			return -EUCLEAN;
++		}
++
++		if (quiet) {
++			/* Redo the last scan but noisily */
++			quiet = 0;
++			continue;
++		}
++
++		ubifs_scanned_corruption(c, lnum, offs, buf);
++		return -EUCLEAN;
++	}
++
++	/* Pad to min_io_size */
++	len = ALIGN(ucleb->endpt, c->min_io_size);
++	if (len > ucleb->endpt) {
++		int pad_len = len - ALIGN(ucleb->endpt, 8);
++
++		if (pad_len > 0) {
++			buf = c->sbuf + len - pad_len;
++			ubifs_pad(c, buf, pad_len);
++		}
++	}
++
++	/* Write back the LEB atomically */
++	err = ubi_leb_change(c->ubi, lnum, sbuf, len, UBI_UNKNOWN);
++	if (err)
++		return err;
++
++	dbg_rcvry("cleaned LEB %d", lnum);
++
++	return 0;
++}
++
++/**
++ * ubifs_clean_lebs - clean LEBs recovered during read-only mount.
++ * @c: UBIFS file-system description object
++ * @sbuf: LEB-sized buffer to use
++ *
++ * This function cleans a LEB identified during recovery that needs to be
++ * written but was not because UBIFS was mounted read-only. This happens when
++ * remounting to read-write mode.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_clean_lebs(const struct ubifs_info *c, void *sbuf)
++{
++	dbg_rcvry("recovery");
++	while (!list_empty(&c->unclean_leb_list)) {
++		struct ubifs_unclean_leb *ucleb;
++		int err;
++
++		ucleb = list_entry(c->unclean_leb_list.next,
++				   struct ubifs_unclean_leb, list);
++		err = clean_an_unclean_leb(c, ucleb, sbuf);
++		if (err)
++			return err;
++		list_del(&ucleb->list);
++		kfree(ucleb);
++	}
++	return 0;
++}
++
++/**
++ * ubifs_rcvry_gc_commit - recover the GC LEB number and run the commit.
++ * @c: UBIFS file-system description object
++ *
++ * Out-of-place garbage collection requires always one empty LEB with which to
++ * start garbage collection. The LEB number is recorded in c->gc_lnum and is
++ * written to the master node on unmounting. In the case of an unclean unmount
++ * the value of gc_lnum recorded in the master node is out of date and cannot
++ * be used. Instead, recovery must allocate an empty LEB for this purpose.
++ * However, there may not be enough empty space, in which case it must be
++ * possible to GC the dirtiest LEB into the GC head LEB.
++ *
++ * This function also runs the commit which causes the TNC updates from
++ * size-recovery and orphans to be written to the flash. That is important to
++ * ensure correct replay order for subsequent mounts.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_rcvry_gc_commit(struct ubifs_info *c)
++{
++	struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf;
++	struct ubifs_lprops lp;
++	int lnum, err;
++
++	c->gc_lnum = -1;
++	if (wbuf->lnum == -1) {
++		dbg_rcvry("no GC head LEB");
++		goto find_free;
++	}
++	/*
++	 * See whether the used space in the dirtiest LEB fits in the GC head
++	 * LEB.
++	 */
++	if (wbuf->offs == c->leb_size) {
++		dbg_rcvry("no room in GC head LEB");
++		goto find_free;
++	}
++	err = ubifs_find_dirty_leb(c, &lp, wbuf->offs, 2);
++	if (err) {
++		if (err == -ENOSPC)
++			dbg_err("could not find a dirty LEB");
++		return err;
++	}
++	ubifs_assert(!(lp.flags & LPROPS_INDEX));
++	lnum = lp.lnum;
++	if (lp.free + lp.dirty == c->leb_size) {
++		/* An empty LEB was returned */
++		if (lp.free != c->leb_size) {
++			err = ubifs_change_one_lp(c, lnum, c->leb_size,
++						  0, 0, 0, 0);
++			if (err)
++				return err;
++		}
++		err = ubifs_leb_unmap(c, lnum);
++		if (err)
++			return err;
++		c->gc_lnum = lnum;
++		dbg_rcvry("allocated LEB %d for GC", lnum);
++		/* Run the commit */
++		dbg_rcvry("committing");
++		return ubifs_run_commit(c);
++	}
++	/*
++	 * There was no empty LEB so the used space in the dirtiest LEB must fit
++	 * in the GC head LEB.
++	 */
++	if (lp.free + lp.dirty < wbuf->offs) {
++		dbg_rcvry("LEB %d doesn't fit in GC head LEB %d:%d",
++			  lnum, wbuf->lnum, wbuf->offs);
++		err = ubifs_return_leb(c, lnum);
++		if (err)
++			return err;
++		goto find_free;
++	}
++	/*
++	 * We run the commit before garbage collection otherwise subsequent
++	 * mounts will see the GC and orphan deletion in a different order.
++	 */
++	dbg_rcvry("committing");
++	err = ubifs_run_commit(c);
++	if (err)
++		return err;
++	/*
++	 * The data in the dirtiest LEB fits in the GC head LEB, so do the GC
++	 * - use locking to keep 'ubifs_assert()' happy.
++	 */
++	dbg_rcvry("GC'ing LEB %d", lnum);
++	mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
++	err = ubifs_garbage_collect_leb(c, &lp);
++	if (err >= 0) {
++		int err2 = ubifs_wbuf_sync_nolock(wbuf);
++
++		if (err2)
++			err = err2;
++	}
++	mutex_unlock(&wbuf->io_mutex);
++	if (err < 0) {
++		dbg_err("GC failed, error %d", err);
++		if (err == -EAGAIN)
++			err = -EINVAL;
++		return err;
++	}
++	if (err != LEB_RETAINED) {
++		dbg_err("GC returned %d", err);
++		return -EINVAL;
++	}
++	err = ubifs_leb_unmap(c, c->gc_lnum);
++	if (err)
++		return err;
++	dbg_rcvry("allocated LEB %d for GC", lnum);
++	return 0;
++
++find_free:
++	/*
++	 * There is no GC head LEB or the free space in the GC head LEB is too
++	 * small. Allocate gc_lnum by calling 'ubifs_find_free_leb_for_idx()' so
++	 * GC is not run.
++	 */
++	lnum = ubifs_find_free_leb_for_idx(c);
++	if (lnum < 0) {
++		dbg_err("could not find an empty LEB");
++		return lnum;
++	}
++	/* And reset the index flag */
++	err = ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0,
++				  LPROPS_INDEX, 0);
++	if (err)
++		return err;
++	c->gc_lnum = lnum;
++	dbg_rcvry("allocated LEB %d for GC", lnum);
++	/* Run the commit */
++	dbg_rcvry("committing");
++	return ubifs_run_commit(c);
++}
++
++/**
++ * struct size_entry - inode size information for recovery.
++ * @rb: link in the RB-tree of sizes
++ * @inum: inode number
++ * @i_size: size on inode
++ * @d_size: maximum size based on data nodes
++ * @exists: indicates whether the inode exists
++ * @inode: inode if pinned in memory awaiting rw mode to fix it
++ */
++struct size_entry {
++	struct rb_node rb;
++	ino_t inum;
++	loff_t i_size;
++	loff_t d_size;
++	int exists;
++	struct inode *inode;
++};
++
++/**
++ * add_ino - add an entry to the size tree.
++ * @c: UBIFS file-system description object
++ * @inum: inode number
++ * @i_size: size on inode
++ * @d_size: maximum size based on data nodes
++ * @exists: indicates whether the inode exists
++ */
++static int add_ino(struct ubifs_info *c, ino_t inum, loff_t i_size,
++		   loff_t d_size, int exists)
++{
++	struct rb_node **p = &c->size_tree.rb_node, *parent = NULL;
++	struct size_entry *e;
++
++	while (*p) {
++		parent = *p;
++		e = rb_entry(parent, struct size_entry, rb);
++		if (inum < e->inum)
++			p = &(*p)->rb_left;
++		else
++			p = &(*p)->rb_right;
++	}
++
++	e = kzalloc(sizeof(struct size_entry), GFP_KERNEL);
++	if (!e)
++		return -ENOMEM;
++
++	e->inum = inum;
++	e->i_size = i_size;
++	e->d_size = d_size;
++	e->exists = exists;
++
++	rb_link_node(&e->rb, parent, p);
++	rb_insert_color(&e->rb, &c->size_tree);
++
++	return 0;
++}
++
++/**
++ * find_ino - find an entry on the size tree.
++ * @c: UBIFS file-system description object
++ * @inum: inode number
++ */
++static struct size_entry *find_ino(struct ubifs_info *c, ino_t inum)
++{
++	struct rb_node *p = c->size_tree.rb_node;
++	struct size_entry *e;
++
++	while (p) {
++		e = rb_entry(p, struct size_entry, rb);
++		if (inum < e->inum)
++			p = p->rb_left;
++		else if (inum > e->inum)
++			p = p->rb_right;
++		else
++			return e;
++	}
++	return NULL;
++}
++
++/**
++ * remove_ino - remove an entry from the size tree.
++ * @c: UBIFS file-system description object
++ * @inum: inode number
++ */
++static void remove_ino(struct ubifs_info *c, ino_t inum)
++{
++	struct size_entry *e = find_ino(c, inum);
++
++	if (!e)
++		return;
++	rb_erase(&e->rb, &c->size_tree);
++	kfree(e);
++}
++
++/**
++ * ubifs_destroy_size_tree - free resources related to the size tree.
++ * @c: UBIFS file-system description object
++ */
++void ubifs_destroy_size_tree(struct ubifs_info *c)
++{
++	struct rb_node *this = c->size_tree.rb_node;
++	struct size_entry *e;
++
++	while (this) {
++		if (this->rb_left) {
++			this = this->rb_left;
++			continue;
++		} else if (this->rb_right) {
++			this = this->rb_right;
++			continue;
++		}
++		e = rb_entry(this, struct size_entry, rb);
++		if (e->inode)
++			iput(e->inode);
++		this = rb_parent(this);
++		if (this) {
++			if (this->rb_left == &e->rb)
++				this->rb_left = NULL;
++			else
++				this->rb_right = NULL;
++		}
++		kfree(e);
++	}
++	c->size_tree = RB_ROOT;
++}
++
++/**
++ * ubifs_recover_size_accum - accumulate inode sizes for recovery.
++ * @c: UBIFS file-system description object
++ * @key: node key
++ * @deletion: node is for a deletion
++ * @new_size: inode size
++ *
++ * This function has two purposes:
++ *     1) to ensure there are no data nodes that fall outside the inode size
++ *     2) to ensure there are no data nodes for inodes that do not exist
++ * To accomplish those purposes, a rb-tree is constructed containing an entry
++ * for each inode number in the journal that has not been deleted, and recording
++ * the size from the inode node, the maximum size of any data node (also altered
++ * by truncations) and a flag indicating a inode number for which no inode node
++ * was present in the journal.
++ *
++ * Note that there is still the possibility that there are data nodes that have
++ * been committed that are beyond the inode size, however the only way to find
++ * them would be to scan the entire index. Alternatively, some provision could
++ * be made to record the size of inodes at the start of commit, which would seem
++ * very cumbersome for a scenario that is quite unlikely and the only negative
++ * consequence of which is wasted space.
++ *
++ * This functions returns %0 on success and a negative error code on failure.
++ */
++int ubifs_recover_size_accum(struct ubifs_info *c, union ubifs_key *key,
++			     int deletion, loff_t new_size)
++{
++	ino_t inum = key_inum(c, key);
++	struct size_entry *e;
++	int err;
++
++	switch (key_type(c, key)) {
++	case UBIFS_INO_KEY:
++		if (deletion)
++			remove_ino(c, inum);
++		else {
++			e = find_ino(c, inum);
++			if (e) {
++				e->i_size = new_size;
++				e->exists = 1;
++			} else {
++				err = add_ino(c, inum, new_size, 0, 1);
++				if (err)
++					return err;
++			}
++		}
++		break;
++	case UBIFS_DATA_KEY:
++		e = find_ino(c, inum);
++		if (e) {
++			if (new_size > e->d_size)
++				e->d_size = new_size;
++		} else {
++			err = add_ino(c, inum, 0, new_size, 0);
++			if (err)
++				return err;
++		}
++		break;
++	case UBIFS_TRUN_KEY:
++		e = find_ino(c, inum);
++		if (e)
++			e->d_size = new_size;
++		break;
++	}
++	return 0;
++}
++
++/**
++ * fix_size_in_place - fix inode size in place on flash.
++ * @c: UBIFS file-system description object
++ * @e: inode size information for recovery
++ */
++static int fix_size_in_place(struct ubifs_info *c, struct size_entry *e)
++{
++	struct ubifs_ino_node *ino = c->sbuf;
++	unsigned char *p;
++	union ubifs_key key;
++	int err, lnum, offs, len;
++	loff_t i_size;
++	uint32_t crc;
++
++	/* Locate the inode node LEB number and offset */
++	ino_key_init(c, &key, e->inum);
++	err = ubifs_tnc_locate(c, &key, ino, &lnum, &offs);
++	if (err)
++		goto out;
++	/*
++	 * If the size recorded on the inode node is greater than the size that
++	 * was calculated from nodes in the journal then don't change the inode.
++	 */
++	i_size = le64_to_cpu(ino->size);
++	if (i_size >= e->d_size)
++		return 0;
++	/* Read the LEB */
++	err = ubi_read(c->ubi, lnum, c->sbuf, 0, c->leb_size);
++	if (err)
++		goto out;
++	/* Change the size field and recalculate the CRC */
++	ino = c->sbuf + offs;
++	ino->size = cpu_to_le64(e->d_size);
++	len = le32_to_cpu(ino->ch.len);
++	crc = crc32(UBIFS_CRC32_INIT, (void *)ino + 8, len - 8);
++	ino->ch.crc = cpu_to_le32(crc);
++	/* Work out where data in the LEB ends and free space begins */
++	p = c->sbuf;
++	len = c->leb_size - 1;
++	while (p[len] == 0xff)
++		len -= 1;
++	len = ALIGN(len + 1, c->min_io_size);
++	/* Atomically write the fixed LEB back again */
++	err = ubi_leb_change(c->ubi, lnum, c->sbuf, len, UBI_UNKNOWN);
++	if (err)
++		goto out;
++	dbg_rcvry("inode %lu at %d:%d size %lld -> %lld ", e->inum, lnum, offs,
++		  i_size, e->d_size);
++	return 0;
++
++out:
++	ubifs_warn("inode %lu failed to fix size %lld -> %lld error %d",
++		   e->inum, e->i_size, e->d_size, err);
++	return err;
++}
++
++/**
++ * ubifs_recover_size - recover inode size.
++ * @c: UBIFS file-system description object
++ *
++ * This function attempts to fix inode size discrepancies identified by the
++ * 'ubifs_recover_size_accum()' function.
++ *
++ * This functions returns %0 on success and a negative error code on failure.
++ */
++int ubifs_recover_size(struct ubifs_info *c)
++{
++	struct rb_node *this = rb_first(&c->size_tree);
++
++	while (this) {
++		struct size_entry *e;
++		int err;
++
++		e = rb_entry(this, struct size_entry, rb);
++		if (!e->exists) {
++			union ubifs_key key;
++
++			ino_key_init(c, &key, e->inum);
++			err = ubifs_tnc_lookup(c, &key, c->sbuf);
++			if (err && err != -ENOENT)
++				return err;
++			if (err == -ENOENT) {
++				/* Remove data nodes that have no inode */
++				dbg_rcvry("removing ino %lu", e->inum);
++				err = ubifs_tnc_remove_ino(c, e->inum);
++				if (err)
++					return err;
++			} else {
++				struct ubifs_ino_node *ino = c->sbuf;
++
++				e->exists = 1;
++				e->i_size = le64_to_cpu(ino->size);
++			}
++		}
++		if (e->exists && e->i_size < e->d_size) {
++			if (!e->inode && (c->vfs_sb->s_flags & MS_RDONLY)) {
++				/* Fix the inode size and pin it in memory */
++				struct inode *inode;
++
++				inode = ubifs_iget(c->vfs_sb, e->inum);
++				if (IS_ERR(inode))
++					return PTR_ERR(inode);
++				if (inode->i_size < e->d_size) {
++					dbg_rcvry("ino %lu size %lld -> %lld",
++						  e->inum, e->d_size,
++						  inode->i_size);
++					inode->i_size = e->d_size;
++					e->inode = inode;
++					this = rb_next(this);
++					continue;
++				}
++				iput(inode);
++			} else {
++				/* Fix the size in place */
++				err = fix_size_in_place(c, e);
++				if (err) {
++					if (e->inode)
++						/*
++						 * We have changed the inode
++						 * size in memory but failed to
++						 * fix it on flash. Mark it
++						 * dirty without budgeting, and
++						 * hope we don't run out of
++						 * space.
++						 */
++						mark_inode_dirty_sync(e->inode);
++					/*
++					 * We consider that failing to recover
++					 * the size is not fatal, because it
++					 * only affects files that were being
++					 * written without synchronization and
++					 * the only down side is that some space
++					 * may be wasted.
++					 */
++					err = 0;
++				}
++				if (e->inode)
++					iput(e->inode);
++			}
++		}
++		this = rb_next(this);
++		rb_erase(&e->rb, &c->size_tree);
++		kfree(e);
++	}
++	return 0;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/replay.c avr32-2.6/fs/ubifs/replay.c
+--- linux-2.6.25.6/fs/ubifs/replay.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/replay.c	2008-06-12 15:09:45.515816461 +0200
+@@ -0,0 +1,1075 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file contains journal replay code. It runs when the file-system is being
++ * mounted and requires no locking.
++ *
++ * The larger is the journal, the longer it takes to scan it, so the longer it
++ * takes to mount UBIFS. This is why the journal has limited size which may be
++ * changed depending on the system requirements. But a larger journal gives
++ * faster I/O speed because it writes the index less frequently. So this is a
++ * trade-off. Also, the journal is indexed by the in-memory index (TNC), so the
++ * larger is the journal, the more memory its index may consume.
++ */
++
++#include "ubifs.h"
++
++/*
++ * Replay flags.
++ *
++ * REPLAY_DELETION: node was deleted
++ * REPLAY_REF: node is a reference node
++ */
++enum {
++	REPLAY_DELETION = 1,
++	REPLAY_REF = 2,
++};
++
++/**
++ * struct replay_entry - replay tree entry.
++ * @lnum: logical eraseblock number of the node
++ * @offs: node offset
++ * @len: node length
++ * @sqnum: node sequence number
++ * @flags: replay flags
++ * @rb: links the replay tree
++ * @key: node key
++ * @nm: directory entry name
++ * @old_size: truncation old size
++ * @new_size: truncation new size
++ * @free: amount of free space in a bud
++ * @dirty: amount of dirty space in a bud from padding and deletion nodes
++ *
++ * UBIFS journal replay must compare node sequence numbers, which means it must
++ * build a tree of node information to insert into the TNC.
++ */
++struct replay_entry {
++	int lnum;
++	int offs;
++	int len;
++	unsigned long long sqnum;
++	int flags;
++	struct rb_node rb;
++	union ubifs_key key;
++	union {
++		struct qstr nm;
++		struct {
++			loff_t old_size;
++			loff_t new_size;
++		};
++		struct {
++			int free;
++			int dirty;
++		};
++	};
++};
++
++/**
++ * struct bud_entry - entry in the list of buds to replay.
++ * @list: next bud in the list
++ * @bud: bud description object
++ * @free: free bytes in the bud
++ * @sqnum: reference node sequence number
++ */
++struct bud_entry {
++	struct list_head list;
++	struct ubifs_bud *bud;
++	int free;
++	unsigned long long sqnum;
++};
++
++/**
++ * set_bud_lprops - set free and dirty space used by a bud.
++ * @c: UBIFS file-system description object
++ * @r: replay entry of bud
++ */
++static int set_bud_lprops(struct ubifs_info *c, struct replay_entry *r)
++{
++	const struct ubifs_lprops *lp;
++	int err = 0, dirty;
++
++	ubifs_get_lprops(c);
++
++	lp = ubifs_lpt_lookup_dirty(c, r->lnum);
++	if (IS_ERR(lp)) {
++		err = PTR_ERR(lp);
++		goto out;
++	}
++
++	dirty = lp->dirty;
++	if (r->offs == 0 && (lp->free != c->leb_size || lp->dirty != 0)) {
++		/*
++		 * The LEB was added to the journal with a starting offset of
++		 * zero which means the LEB must have been empty. The LEB
++		 * property values should be lp->free == c->leb_size and
++		 * lp->dirty == 0, but that is not the case. The reason is that
++		 * the LEB was garbage collected. The garbage collector resets
++		 * the free and dirty space without recording it anywhere except
++		 * lprops, so if there is not a commit then lprops does not have
++		 * that information next time the file system is mounted.
++		 *
++		 * We do not need to adjust free space because the scan has told
++		 * us the exact value which is recorded in the replay entry as
++		 * r->free.
++		 *
++		 * However we do need to subtract from the dirty space the
++		 * amount of space that the garbage collector reclaimed, which
++		 * is the whole LEB minus the amount of space that was free.
++		 */
++		dbg_mnt("bud LEB %d was GC'd (%d free, %d dirty)", r->lnum,
++			lp->free, lp->dirty);
++		dbg_gc("bud LEB %d was GC'd (%d free, %d dirty)", r->lnum,
++			lp->free, lp->dirty);
++		dirty -= c->leb_size - lp->free;
++		/*
++		 * If the replay order was perfect the dirty space would now be
++		 * zero. The order is not perfect because the the journal heads
++		 * race with eachother. This is not a problem but is does mean
++		 * that the dirty space may temporarily exceed c->leb_size
++		 * during the replay.
++		 */
++		if (dirty != 0)
++			dbg_msg("LEB %d lp: %d free %d dirty "
++				"replay: %d free %d dirty", r->lnum, lp->free,
++				lp->dirty, r->free, r->dirty);
++	}
++	lp = ubifs_change_lp(c, lp, r->free, dirty + r->dirty,
++			     lp->flags | LPROPS_TAKEN, 0);
++	if (IS_ERR(lp)) {
++		err = PTR_ERR(lp);
++		goto out;
++	}
++out:
++	ubifs_release_lprops(c);
++	return err;
++}
++
++/**
++ * trun_remove_range - apply a replay entry for a truncation to the TNC.
++ * @c: UBIFS file-system description object
++ * @r: replay entry of truncation
++ */
++static int trun_remove_range(struct ubifs_info *c, struct replay_entry *r)
++{
++	unsigned min_blk, max_blk;
++	union ubifs_key min_key, max_key;
++	ino_t ino;
++
++	min_blk = r->new_size / UBIFS_BLOCK_SIZE;
++	if (r->new_size & (UBIFS_BLOCK_SIZE - 1))
++		min_blk += 1;
++
++	max_blk = r->old_size / UBIFS_BLOCK_SIZE;
++	if ((r->old_size & (UBIFS_BLOCK_SIZE - 1)) == 0)
++		max_blk -= 1;
++
++	ino = key_inum(c, &r->key);
++
++	data_key_init(c, &min_key, ino, min_blk);
++	data_key_init(c, &max_key, ino, max_blk);
++
++	return ubifs_tnc_remove_range(c, &min_key, &max_key);
++}
++
++/**
++ * apply_replay_entry - apply a replay entry to the TNC.
++ * @c: UBIFS file-system description object
++ * @r: replay entry to apply
++ *
++ * Apply a replay entry to the TNC.
++ */
++static int apply_replay_entry(struct ubifs_info *c, struct replay_entry *r)
++{
++	int err, deletion = ((r->flags & REPLAY_DELETION) != 0);
++
++	dbg_mnt("LEB %d:%d len %d flgs %d sqnum %llu %s", r->lnum,
++		r->offs, r->len, r->flags, r->sqnum, DBGKEY(&r->key));
++
++	/* Set c->replay_sqnum to help deal with dangling branches. */
++	c->replay_sqnum = r->sqnum;
++
++	if (r->flags & REPLAY_REF)
++		err = set_bud_lprops(c, r);
++	else if (is_hash_key(c, &r->key)) {
++		if (deletion)
++			err = ubifs_tnc_remove_nm(c, &r->key, &r->nm);
++		else
++			err = ubifs_tnc_add_nm(c, &r->key, r->lnum, r->offs,
++					       r->len, &r->nm);
++	} else {
++		if (deletion)
++			switch (key_type(c, &r->key)) {
++			case UBIFS_INO_KEY:
++			{
++				ino_t inum = key_inum(c, &r->key);
++
++				err = ubifs_tnc_remove_ino(c, inum);
++				break;
++			}
++			case UBIFS_TRUN_KEY:
++				err = trun_remove_range(c, r);
++				break;
++			default:
++				err = ubifs_tnc_remove(c, &r->key);
++				break;
++			}
++		else
++			err = ubifs_tnc_add(c, &r->key, r->lnum, r->offs,
++					    r->len);
++		if (err)
++			return err;
++
++		if (c->need_recovery)
++			err = ubifs_recover_size_accum(c, &r->key, deletion,
++						       r->new_size);
++	}
++
++	return err;
++}
++
++/**
++ * destroy_replay_tree - destroy the replay.
++ * @c: UBIFS file-system description object
++ *
++ * Destroy the replay tree.
++ */
++static void destroy_replay_tree(struct ubifs_info *c)
++{
++	struct rb_node *this = c->replay_tree.rb_node;
++	struct replay_entry *r;
++
++	while (this) {
++		if (this->rb_left) {
++			this = this->rb_left;
++			continue;
++		} else if (this->rb_right) {
++			this = this->rb_right;
++			continue;
++		}
++		r = rb_entry(this, struct replay_entry, rb);
++		this = rb_parent(this);
++		if (this) {
++			if (this->rb_left == &r->rb)
++				this->rb_left = NULL;
++			else
++				this->rb_right = NULL;
++		}
++		if (is_hash_key(c, &r->key))
++			kfree(r->nm.name);
++		kfree(r);
++	}
++	c->replay_tree = RB_ROOT;
++}
++
++/**
++ * apply_replay_tree - apply the replay tree to the TNC.
++ * @c: UBIFS file-system description object
++ *
++ * Apply the replay tree.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int apply_replay_tree(struct ubifs_info *c)
++{
++	struct rb_node *this = rb_first(&c->replay_tree);
++
++	while (this) {
++		struct replay_entry *r;
++		int err;
++
++		cond_resched();
++
++		r = rb_entry(this, struct replay_entry, rb);
++		err = apply_replay_entry(c, r);
++		if (err)
++			return err;
++		this = rb_next(this);
++	}
++	return 0;
++}
++
++/**
++ * insert_node - insert a node to the replay tree.
++ * @c: UBIFS file-system description object
++ * @lnum: node logical eraseblock number
++ * @offs: node offset
++ * @len: node length
++ * @key: node key
++ * @sqnum: sequence number
++ * @deletion: non-zero if this is a deletion
++ * @used: number of bytes in use in a LEB
++ * @old_size: truncation old size
++ * @new_size: truncation new size
++ *
++ * This function inserts a scanned non-direntry node to the replay tree. The
++ * replay tree is an RB-tree containing @struct replay_entry elements which are
++ * indexed by the sequence number. The replay tree is applied at the very end
++ * of the replay process. Since the tree is sorted in sequence number order,
++ * the older modifications are applied first. This function returns zero in
++ * case of success and a negative error code in case of failure.
++ */
++static int insert_node(struct ubifs_info *c, int lnum, int offs, int len,
++		       union ubifs_key *key, unsigned long long sqnum,
++		       int deletion, int *used, loff_t old_size,
++		       loff_t new_size)
++{
++	struct rb_node **p = &c->replay_tree.rb_node, *parent = NULL;
++	struct replay_entry *r;
++
++	if (key_inum(c, key) >= c->highest_inum)
++		c->highest_inum = key_inum(c, key);
++
++	dbg_mnt("add LEB %d:%d, key %s", lnum, offs, DBGKEY(key));
++	while (*p) {
++		parent = *p;
++		r = rb_entry(parent, struct replay_entry, rb);
++		if (sqnum < r->sqnum) {
++			p = &(*p)->rb_left;
++			continue;
++		} else if (sqnum > r->sqnum) {
++			p = &(*p)->rb_right;
++			continue;
++		}
++		ubifs_err("duplicate sqnum in replay");
++		return -EINVAL;
++	}
++
++	r = kzalloc(sizeof(struct replay_entry), GFP_KERNEL);
++	if (!r)
++		return -ENOMEM;
++
++	if (!deletion)
++		*used += ALIGN(len, 8);
++	r->lnum = lnum;
++	r->offs = offs;
++	r->len = len;
++	r->sqnum = sqnum;
++	r->flags = (deletion ? REPLAY_DELETION : 0);
++	r->old_size = old_size;
++	r->new_size = new_size;
++	key_copy(c, key, &r->key);
++
++	rb_link_node(&r->rb, parent, p);
++	rb_insert_color(&r->rb, &c->replay_tree);
++	return 0;
++}
++
++/**
++ * insert_dent - insert a directory entry node into the replay tree.
++ * @c: UBIFS file-system description object
++ * @lnum: node logical eraseblock number
++ * @offs: node offset
++ * @len: node length
++ * @key: node key
++ * @name: directory entry name
++ * @nlen: directory entry name length
++ * @sqnum: sequence number
++ * @deletion: non-zero if this is a deletion
++ * @used: number of bytes in use in a LEB
++ *
++ * This function inserts a scanned directory entry node to the replay tree.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ *
++ * This function is also used for extended attribute entries because they are
++ * implemented as directory entry nodes.
++ */
++static int insert_dent(struct ubifs_info *c, int lnum, int offs, int len,
++		       union ubifs_key *key, const char *name, int nlen,
++		       unsigned long long sqnum, int deletion, int *used)
++{
++	struct rb_node **p = &c->replay_tree.rb_node, *parent = NULL;
++	struct replay_entry *r;
++	char *nbuf;
++
++	if (key_inum(c, key) >= c->highest_inum)
++		c->highest_inum = key_inum(c, key);
++
++	dbg_mnt("add LEB %d:%d, key %s", lnum, offs, DBGKEY(key));
++	while (*p) {
++		parent = *p;
++		r = rb_entry(parent, struct replay_entry, rb);
++		if (sqnum < r->sqnum) {
++			p = &(*p)->rb_left;
++			continue;
++		}
++		if (sqnum > r->sqnum) {
++			p = &(*p)->rb_right;
++			continue;
++		}
++		ubifs_err("duplicate sqnum in replay");
++		return -EINVAL;
++	}
++
++	r = kzalloc(sizeof(struct replay_entry), GFP_KERNEL);
++	if (!r)
++		return -ENOMEM;
++	nbuf = kmalloc(nlen + 1, GFP_KERNEL);
++	if (!nbuf) {
++		kfree(r);
++		return -ENOMEM;
++	}
++
++	if (!deletion)
++		*used += ALIGN(len, 8);
++	r->lnum = lnum;
++	r->offs = offs;
++	r->len = len;
++	r->sqnum = sqnum;
++	r->nm.len = nlen;
++	memcpy(nbuf, name, nlen);
++	nbuf[nlen] = '\0';
++	r->nm.name = nbuf;
++	r->flags = (deletion ? REPLAY_DELETION : 0);
++	key_copy(c, key, &r->key);
++
++	ubifs_assert(!*p);
++	rb_link_node(&r->rb, parent, p);
++	rb_insert_color(&r->rb, &c->replay_tree);
++	return 0;
++}
++
++/**
++ * ubifs_validate_entry - validate directory or extended attribute entry node.
++ * @c: UBIFS file-system description object
++ * @dent: the node to validate
++ *
++ * This function validates directory or extended attribute entry node @dent.
++ * Returns zero if the node is all right and a %-EINVAL if not.
++ */
++int ubifs_validate_entry(struct ubifs_info *c,
++			 const struct ubifs_dent_node *dent)
++{
++	int key_type = key_type_flash(c, dent->key);
++	int nlen = le16_to_cpu(dent->nlen);
++
++	if (le32_to_cpu(dent->ch.len) != nlen + UBIFS_DENT_NODE_SZ + 1 ||
++	    dent->type >= UBIFS_ITYPES_CNT ||
++	    nlen > UBIFS_MAX_NLEN || dent->name[nlen] != 0 ||
++	    strnlen(dent->name, nlen) != nlen ||
++	    le64_to_cpu(dent->inum) > MAX_INUM) {
++		ubifs_err("bad %s node", key_type == UBIFS_DENT_KEY ?
++			  "directory entry" : "extended attribute entry");
++		return -EINVAL;
++	}
++
++	if (key_type != UBIFS_DENT_KEY && key_type != UBIFS_XENT_KEY) {
++		ubifs_err("bad key type %d", key_type);
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/**
++ * replay_bud - replay a bud logical eraseblock.
++ * @c: UBIFS file-system description object
++ * @lnum: bud logical eraseblock number to replay
++ * @offs: bud start offset
++ * @jhead: journal head to which this bud belongs
++ * @free: amount of free space in the bud is returned here
++ * @dirty: amount of dirty space from padding and deletion nodes is returned
++ * here
++ *
++ * This function returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead,
++		      int *free, int *dirty)
++{
++	int err = 0, used = 0;
++	struct ubifs_scan_leb *sleb;
++	struct ubifs_scan_node *snod;
++	struct ubifs_bud *bud;
++
++	dbg_mnt("replay bud LEB %d, head %d", lnum, jhead);
++	if (c->need_recovery)
++		sleb = ubifs_recover_leb(c, lnum, offs, c->sbuf, jhead != GCHD);
++	else
++		sleb = ubifs_scan(c, lnum, offs, c->sbuf);
++	if (IS_ERR(sleb))
++		return PTR_ERR(sleb);
++
++	/*
++	 * The bud does not have to start from offset zero - the beginning of
++	 * the 'lnum' LEB may contain previously committed data. One of the
++	 * things we have to do in replay is to correctly update lprops with
++	 * newer information about this LEB.
++	 *
++	 * At this point lprops thinks that this LEB has 'c->leb_size - offs'
++	 * bytes of free space because it only contain information about
++	 * committed data.
++	 *
++	 * But we know that real amount of free space is 'c->leb_size -
++	 * sleb->endpt', and the space in the 'lnum' LEB between 'offs' and
++	 * 'sleb->endpt' is used by bud data. We have to correctly calculate
++	 * how much of these data are dirty and update lprops with this
++	 * information.
++	 *
++	 * The dirt in that LEB region is comprised of padding nodes, deletion
++	 * nodes, truncation nodes and nodes which are obsoleted by subsequent
++	 * nodes in this LEB. So instead of calculating clean space, we
++	 * calculate used space ('used' variable).
++	 */
++
++	list_for_each_entry(snod, &sleb->nodes, list) {
++		int deletion = 0;
++
++		cond_resched();
++
++		if (snod->sqnum >= SQNUM_WATERMARK) {
++			ubifs_err("file system's life ended");
++			goto out_dump;
++		}
++
++		if (snod->sqnum > c->max_sqnum)
++			c->max_sqnum = snod->sqnum;
++
++		switch (snod->type) {
++		case UBIFS_INO_NODE:
++		{
++			struct ubifs_ino_node *ino = snod->node;
++			loff_t new_size = le64_to_cpu(ino->size);
++
++			if (le32_to_cpu(ino->nlink) == 0)
++				deletion = 1;
++			err = insert_node(c, lnum, snod->offs, snod->len,
++					  &snod->key, snod->sqnum, deletion,
++					  &used, 0, new_size);
++			break;
++		}
++		case UBIFS_DATA_NODE:
++		{
++			struct ubifs_data_node *dn = snod->node;
++			loff_t new_size = le32_to_cpu(dn->size) +
++					  key_block(c, &snod->key) *
++					  UBIFS_BLOCK_SIZE;
++
++			err = insert_node(c, lnum, snod->offs, snod->len,
++					  &snod->key, snod->sqnum, deletion,
++					  &used, 0, new_size);
++			break;
++		}
++		case UBIFS_DENT_NODE:
++		case UBIFS_XENT_NODE:
++		{
++			struct ubifs_dent_node *dent = snod->node;
++
++			err = ubifs_validate_entry(c, dent);
++			if (err)
++				goto out_dump;
++
++			err = insert_dent(c, lnum, snod->offs, snod->len,
++					  &snod->key, dent->name,
++					  le16_to_cpu(dent->nlen), snod->sqnum,
++					  !le64_to_cpu(dent->inum), &used);
++			break;
++		}
++		case UBIFS_TRUN_NODE:
++		{
++			struct ubifs_trun_node *trun = snod->node;
++			loff_t old_size = le64_to_cpu(trun->old_size);
++			loff_t new_size = le64_to_cpu(trun->new_size);
++			union ubifs_key key;
++
++			/* Validate truncation node */
++			if (old_size < 0 || old_size > c->max_inode_sz ||
++			    new_size < 0 || new_size > c->max_inode_sz ||
++			    old_size <= new_size) {
++				ubifs_err("bad truncation node");
++				goto out_dump;
++			}
++
++			/*
++			 * Create a fake truncation key just to use the same
++			 * functions which expect nodes to have keys.
++			 */
++			trun_key_init(c, &key, le32_to_cpu(trun->inum));
++			err = insert_node(c, lnum, snod->offs, snod->len,
++					  &key, snod->sqnum, 1, &used,
++					  old_size, new_size);
++			break;
++		}
++		default:
++			ubifs_err("unexpected node type %d in bud LEB %d:%d",
++				  snod->type, lnum, snod->offs);
++			err = -EINVAL;
++			goto out_dump;
++		}
++		if (err)
++			goto out;
++	}
++
++	bud = ubifs_search_bud(c, lnum);
++	if (!bud)
++		BUG();
++
++	ubifs_assert(sleb->endpt - offs >= used);
++	ubifs_assert(sleb->endpt % c->min_io_size == 0);
++
++	if (sleb->endpt + c->min_io_size <= c->leb_size &&
++	    !(c->vfs_sb->s_flags & MS_RDONLY))
++		err = ubifs_wbuf_seek_nolock(&c->jheads[jhead].wbuf, lnum,
++					     sleb->endpt, UBI_SHORTTERM);
++
++	*dirty = sleb->endpt - offs - used;
++	*free = c->leb_size - sleb->endpt;
++
++out:
++	ubifs_scan_destroy(sleb);
++	return err;
++
++out_dump:
++	ubifs_err("bad node is at LEB %d:%d", lnum, snod->offs);
++	dbg_dump_node(c, snod->node);
++	ubifs_scan_destroy(sleb);
++	return -EINVAL;
++}
++
++/**
++ * insert_ref_node - insert a reference node to the replay tree.
++ * @c: UBIFS file-system description object
++ * @lnum: node logical eraseblock number
++ * @offs: node offset
++ * @sqnum: sequence number
++ * @free: amount of free space in bud
++ * @dirty: amount of dirty space from padding and deletion nodes
++ *
++ * This function inserts a reference node to the replay tree and returns zero
++ * in case of success ort a negative error code in case of failure.
++ */
++static int insert_ref_node(struct ubifs_info *c, int lnum, int offs,
++			   unsigned long long sqnum, int free, int dirty)
++{
++	struct rb_node **p = &c->replay_tree.rb_node, *parent = NULL;
++	struct replay_entry *r;
++
++	dbg_mnt("add ref LEB %d:%d", lnum, offs);
++	while (*p) {
++		parent = *p;
++		r = rb_entry(parent, struct replay_entry, rb);
++		if (sqnum < r->sqnum) {
++			p = &(*p)->rb_left;
++			continue;
++		} else if (sqnum > r->sqnum) {
++			p = &(*p)->rb_right;
++			continue;
++		}
++		ubifs_err("duplicate sqnum in replay tree");
++		return -EINVAL;
++	}
++
++	r = kzalloc(sizeof(struct replay_entry), GFP_KERNEL);
++	if (!r)
++		return -ENOMEM;
++
++	r->lnum = lnum;
++	r->offs = offs;
++	r->sqnum = sqnum;
++	r->flags = REPLAY_REF;
++	r->free = free;
++	r->dirty = dirty;
++
++	rb_link_node(&r->rb, parent, p);
++	rb_insert_color(&r->rb, &c->replay_tree);
++	return 0;
++}
++
++/**
++ * replay_buds - replay all buds.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int replay_buds(struct ubifs_info *c)
++{
++	struct bud_entry *b;
++	int err, uninitialized_var(free), uninitialized_var(dirty);
++
++	list_for_each_entry(b, &c->replay_buds, list) {
++		err = replay_bud(c, b->bud->lnum, b->bud->start, b->bud->jhead,
++				 &free, &dirty);
++		if (err)
++			return err;
++		err = insert_ref_node(c, b->bud->lnum, b->bud->start, b->sqnum,
++				      free, dirty);
++		if (err)
++			return err;
++	}
++
++	return 0;
++}
++
++/**
++ * destroy_bud_list - destroy the list of buds to replay.
++ * @c: UBIFS file-system description object
++ */
++static void destroy_bud_list(struct ubifs_info *c)
++{
++	struct bud_entry *b;
++
++	while (!list_empty(&c->replay_buds)) {
++		b = list_entry(c->replay_buds.next, struct bud_entry, list);
++		list_del(&b->list);
++		kfree(b);
++	}
++}
++
++/**
++ * add_replay_bud - add a bud to the list of buds to replay.
++ * @c: UBIFS file-system description object
++ * @lnum: bud logical eraseblock number to replay
++ * @offs: bud start offset
++ * @jhead: journal head to which this bud belongs
++ * @sqnum: reference node sequence number
++ *
++ * This function returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int add_replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead,
++			  unsigned long long sqnum)
++{
++	struct ubifs_bud *bud;
++	struct bud_entry *b;
++
++	dbg_mnt("add replay bud LEB %d:%d, head %d", lnum, offs, jhead);
++
++	bud = kmalloc(sizeof(struct ubifs_bud), GFP_KERNEL);
++	if (!bud)
++		return -ENOMEM;
++
++	b = kmalloc(sizeof(struct bud_entry), GFP_KERNEL);
++	if (!b) {
++		kfree(bud);
++		return -ENOMEM;
++	}
++
++	bud->lnum = lnum;
++	bud->start = offs;
++	bud->jhead = jhead;
++	ubifs_add_bud(c, bud);
++
++	b->bud = bud;
++	b->sqnum = sqnum;
++	list_add_tail(&b->list, &c->replay_buds);
++
++	return 0;
++}
++
++/**
++ * validate_ref - validate a reference node.
++ * @c: UBIFS file-system description object
++ * @ref: the reference node to validate
++ * @ref_lnum: LEB number of the reference node
++ * @ref_offs: reference node offset
++ *
++ * This function returns %1 if a bud reference already exists for the LEB. %0 is
++ * returned if the reference node is new, otherwise %-EINVAL is returned if
++ * validation failed.
++ */
++static int validate_ref(struct ubifs_info *c, const struct ubifs_ref_node *ref)
++{
++	struct ubifs_bud *bud;
++	int lnum = le32_to_cpu(ref->lnum);
++	unsigned int offs = le32_to_cpu(ref->offs);
++	unsigned int jhead = le32_to_cpu(ref->jhead);
++
++	/*
++	 * ref->offs may point to the end of LEB when the journal head points
++	 * to the end of LEB and we write reference node for it during commit.
++	 * So this is why we require 'offs > c->leb_size'.
++	 */
++	if (jhead >= c->jhead_cnt || lnum >= c->leb_cnt ||
++	    lnum < c->main_first || offs > c->leb_size ||
++	    offs & (c->min_io_size - 1))
++		return -EINVAL;
++
++	/* Make sure we have not already looked at this bud */
++	bud = ubifs_search_bud(c, lnum);
++	if (bud) {
++		if (bud->jhead == jhead && bud->start <= offs)
++			return 1;
++		ubifs_err("bud at LEB %d:%d was already referred", lnum, offs);
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/**
++ * replay_log_leb - replay a log logical eraseblock.
++ * @c: UBIFS file-system description object
++ * @lnum: log logical eraseblock to replay
++ * @offs: offset to start replaying from
++ * @sbuf: scan buffer
++ *
++ * This function replays a log LEB and returns zero in case of success, %1 if
++ * this is the last LEB in the log, and a negative error code in case of
++ * failure.
++ */
++static int replay_log_leb(struct ubifs_info *c, int lnum, int offs, void *sbuf)
++{
++	int err;
++	struct ubifs_scan_leb *sleb;
++	struct ubifs_scan_node *snod;
++	const struct ubifs_cs_node *node;
++
++	dbg_mnt("replay log LEB %d:%d", lnum, offs);
++	sleb = ubifs_scan(c, lnum, offs, sbuf);
++	if (IS_ERR(sleb)) {
++		if (c->need_recovery)
++			sleb = ubifs_recover_log_leb(c, lnum, offs, sbuf);
++		if (IS_ERR(sleb))
++			return PTR_ERR(sleb);
++	}
++
++	if (sleb->nodes_cnt == 0) {
++		err = 1;
++		goto out;
++	}
++
++	node = sleb->buf;
++
++	snod = list_entry(sleb->nodes.next, struct ubifs_scan_node, list);
++	if (c->cs_sqnum == 0) {
++		/*
++		 * This is the first log LEB we are looking at, make sure that
++		 * the first node is a commit start node. Also record its
++		 * sequence number so that UBIFS can determine where the log
++		 * ends, because all nodes which were have higher sequence
++		 * numbers.
++		 */
++		if (snod->type != UBIFS_CS_NODE) {
++			dbg_err("first log node at LEB %d:%d is not CS node",
++				lnum, offs);
++			goto out_dump;
++		}
++		if (le64_to_cpu(node->cmt_no) != c->cmt_no) {
++			dbg_err("first CS node at LEB %d:%d has wrong "
++				"commit number %llu expected %llu",
++				lnum, offs,
++				(unsigned long long)le64_to_cpu(node->cmt_no),
++				c->cmt_no);
++			goto out_dump;
++		}
++
++		c->cs_sqnum = le64_to_cpu(node->ch.sqnum);
++		dbg_mnt("commit start sqnum %llu", c->cs_sqnum);
++	}
++
++	if (snod->sqnum < c->cs_sqnum) {
++		/*
++		 * This means that we reached end of log and now
++		 * look to the older log data, which was already
++		 * committed but the eraseblock was not erased (UBIFS
++		 * only unmaps it). So this basically means we have to
++		 * exit with "end of log" code.
++		 */
++		err = 1;
++		goto out;
++	}
++
++	/* Make sure the first node sits at offset zero of the LEB */
++	if (snod->offs != 0) {
++		dbg_err("first node is not at zero offset");
++		goto out_dump;
++	}
++
++	list_for_each_entry(snod, &sleb->nodes, list) {
++
++		cond_resched();
++
++		if (snod->sqnum >= SQNUM_WATERMARK) {
++			ubifs_err("file system's life ended");
++			goto out_dump;
++		}
++
++		if (snod->sqnum < c->cs_sqnum) {
++			dbg_err("bad sqnum %llu, commit sqnum %llu",
++				snod->sqnum, c->cs_sqnum);
++			goto out_dump;
++		}
++
++		if (snod->sqnum > c->max_sqnum)
++			c->max_sqnum = snod->sqnum;
++
++		switch (snod->type) {
++		case UBIFS_REF_NODE: {
++			const struct ubifs_ref_node *ref = snod->node;
++
++			err = validate_ref(c, ref);
++			if (err == 1)
++				break; /* Already have this bud */
++			if (err)
++				goto out_dump;
++
++			err = add_replay_bud(c, le32_to_cpu(ref->lnum),
++					     le32_to_cpu(ref->offs),
++					     le32_to_cpu(ref->jhead),
++					     snod->sqnum);
++			if (err)
++				goto out;
++
++			break;
++		}
++		case UBIFS_CS_NODE:
++			/* Make sure it sits at the beginning of LEB */
++			if (snod->offs != 0) {
++				ubifs_err("unexpected node in log");
++				goto out_dump;
++			}
++			break;
++		default:
++			ubifs_err("unexpected node in log");
++			goto out_dump;
++		}
++	}
++
++	if (sleb->endpt || c->lhead_offs >= c->leb_size) {
++		c->lhead_lnum = lnum;
++		c->lhead_offs = sleb->endpt;
++	}
++
++	err = !sleb->endpt;
++out:
++	ubifs_scan_destroy(sleb);
++	return err;
++
++out_dump:
++	ubifs_err("log error detected while replying the log at LEB %d:%d",
++		  lnum, offs + snod->offs);
++	dbg_dump_node(c, snod->node);
++	ubifs_scan_destroy(sleb);
++	return -EINVAL;
++}
++
++/**
++ * take_ihead - update the status of the index head in lprops to 'taken'.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns the amount of free space in the index head LEB or a
++ * negative error code.
++ */
++static int take_ihead(struct ubifs_info *c)
++{
++	const struct ubifs_lprops *lp;
++	int err, free;
++
++	ubifs_get_lprops(c);
++
++	lp = ubifs_lpt_lookup_dirty(c, c->ihead_lnum);
++	if (IS_ERR(lp)) {
++		err = PTR_ERR(lp);
++		goto out;
++	}
++
++	free = lp->free;
++
++	lp = ubifs_change_lp(c, lp, LPROPS_NC, LPROPS_NC,
++			     lp->flags | LPROPS_TAKEN, 0);
++	if (IS_ERR(lp)) {
++		err = PTR_ERR(lp);
++		goto out;
++	}
++
++	err = free;
++out:
++	ubifs_release_lprops(c);
++	return err;
++}
++
++/**
++ * ubifs_replay_journal - replay journal.
++ * @c: UBIFS file-system description object
++ *
++ * This function scans the journal, replays and cleans it up. It makes sure all
++ * memory data structures related to uncommitted journal are built (dirty TNC
++ * tree, tree of buds, modified lprops, etc).
++ */
++int ubifs_replay_journal(struct ubifs_info *c)
++{
++	int err, i, lnum, offs, free;
++	void *sbuf = NULL;
++
++	BUILD_BUG_ON(UBIFS_TRUN_KEY > 5);
++
++	/* Update the status of the index head in lprops to 'taken' */
++	free = take_ihead(c);
++	if (free < 0)
++		return free; /* Error code */
++
++	if (c->ihead_offs != c->leb_size - free) {
++		ubifs_err("bad index head LEB %d:%d", c->ihead_lnum,
++			  c->ihead_offs);
++		return -EINVAL;
++	}
++
++	sbuf = vmalloc(c->leb_size);
++	if (!sbuf)
++		return -ENOMEM;
++
++	dbg_mnt("start replaying the journal");
++
++	c->replaying = 1;
++
++	lnum = c->ltail_lnum = c->lhead_lnum;
++	offs = c->lhead_offs;
++
++	for (i = 0; i < c->log_lebs; i++, lnum++) {
++		if (lnum >= UBIFS_LOG_LNUM + c->log_lebs) {
++			/*
++			 * The log is logically circular, we reached the last
++			 * LEB, switch to the first one.
++			 */
++			lnum = UBIFS_LOG_LNUM;
++			offs = 0;
++		}
++		err = replay_log_leb(c, lnum, offs, sbuf);
++		if (err == 1)
++			/* We hit the end of the log */
++			break;
++		if (err)
++			goto out;
++		offs = 0;
++	}
++
++	err = replay_buds(c);
++	if (err)
++		goto out;
++
++	err = apply_replay_tree(c);
++	if (err)
++		goto out;
++
++	ubifs_assert(c->bud_bytes <= c->max_bud_bytes || c->need_recovery);
++	dbg_mnt("finished, log head LEB %d:%d, max_sqnum %llu, "
++		"highest_inum %lu", c->lhead_lnum, c->lhead_offs, c->max_sqnum,
++		c->highest_inum);
++out:
++	destroy_replay_tree(c);
++	destroy_bud_list(c);
++	vfree(sbuf);
++	c->replaying = 0;
++	return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/sb.c avr32-2.6/fs/ubifs/sb.c
+--- linux-2.6.25.6/fs/ubifs/sb.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/sb.c	2008-06-12 15:09:45.515816461 +0200
+@@ -0,0 +1,618 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file implements UBIFS superblock. The superblock is stored at the first
++ * LEB of the volume and is never changed by UBIFS. Only user-space tools may
++ * change it. The superblock node mostly contains geometry information.
++ */
++
++#include "ubifs.h"
++#include <linux/random.h>
++
++/*
++ * Default journal size in logical eraseblocks as a percent of total
++ * flash size.
++ */
++#define DEFAULT_JNL_PERCENT 5
++
++/* Default maximum journal size in bytes */
++#define DEFAULT_MAX_JNL (32*1024*1024)
++
++/* Default indexing tree fanout */
++#define DEFAULT_FANOUT 8
++
++/* Default number of LEBs for orphan information */
++#ifdef CONFIG_UBIFS_FS_DEBUG
++#define DEFAULT_ORPHAN_LEBS 2 /* 2 is better for testing */
++#else
++#define DEFAULT_ORPHAN_LEBS 1
++#endif
++
++/* Default number of journal heads */
++#define DEFAULT_JHEADS_CNT 1
++
++/* Default positions of different LEBs in the main area */
++#define DEFAULT_IDX_LEB  0
++#define DEFAULT_DATA_LEB 1
++#define DEFAULT_GC_LEB   2
++
++/* Default number of LEB numbers in LPT's save table */
++#define DEFAULT_LSAVE_CNT 256
++
++/* Default reserved pool size as a percent of maximum free space */
++#define DEFAULT_RP_PERCENT 5
++
++/* The default maximum size of reserved pool in bytes */
++#define DEFAULT_MAX_RP_SIZE (5*1024*1024)
++
++/* Default UBIFS compressor */
++#define DEFAULT_COMPRESSOR UBIFS_COMPR_LZO
++
++/* Default time granularity in nanoseconds */
++#define DEFAULT_TIME_GRAN 1000000000
++
++/**
++ * create_default_filesystem - format empty UBI volume.
++ * @c: UBIFS file-system description object
++ *
++ * This function creates default empty file-system. Returns zero in case of
++ * success and a negative error code in case of failure.
++ */
++static int create_default_filesystem(struct ubifs_info *c)
++{
++	struct ubifs_sb_node *sup;
++	struct ubifs_mst_node *mst;
++	struct ubifs_idx_node *idx;
++	struct ubifs_branch *br;
++	struct ubifs_ino_node *ino;
++	struct ubifs_cs_node *cs;
++	union ubifs_key key;
++	int err, tmp, jnl_lebs, log_lebs, max_buds, main_lebs, main_first;
++	int lpt_lebs, lpt_first, orph_lebs, big_lpt, ino_waste, sup_flags = 0;
++	uint64_t tmp64, main_bytes;
++
++	/* Some functions called from here depend on the @c->key_len filed */
++	c->key_len = UBIFS_SK_LEN;
++
++	/*
++	 * First of all, we have to calculate default file-system geometry -
++	 * log size, journal size, etc.
++	 */
++	c->max_leb_cnt = c->leb_cnt;
++	if (c->leb_cnt < 0x7FFFFFFF / DEFAULT_JNL_PERCENT)
++		/* We can first multiply then divide and have no overflow */
++		jnl_lebs = c->leb_cnt * DEFAULT_JNL_PERCENT / 100;
++	else
++		jnl_lebs = (c->leb_cnt / 100) * DEFAULT_JNL_PERCENT;
++
++	if (jnl_lebs < UBIFS_MIN_JNL_LEBS)
++		jnl_lebs = UBIFS_MIN_JNL_LEBS;
++	if (jnl_lebs * c->leb_size > DEFAULT_MAX_JNL)
++		jnl_lebs = DEFAULT_MAX_JNL / c->leb_size;
++
++	/*
++	 * The log should be large enough to fit reference nodes for all bud
++	 * LEBs. Because buds do not have to start from the beginning of LEBs
++	 * (half of the LEB may contain committed data), the log should
++	 * generally be larger, make it twice as large.
++	 */
++	tmp = 2 * (c->ref_node_alsz * jnl_lebs) + c->leb_size - 1;
++	log_lebs = tmp / c->leb_size;
++	/* Plus one LEB reserved for commit */
++	log_lebs += 1;
++	/* And some extra space to allow writes while committing */
++	log_lebs += 1;
++
++	max_buds = jnl_lebs - log_lebs;
++	if (max_buds < UBIFS_MIN_BUD_LEBS)
++		max_buds = UBIFS_MIN_BUD_LEBS;
++
++	/*
++	 * Orphan nodes are stored in a separate area. One node can store a lot
++	 * of orphan inode numbers, but when new orphan comes we just add a new
++	 * orphan node. At some point the nodes are consolidated into one
++	 * orphan node.
++	 */
++	orph_lebs = DEFAULT_ORPHAN_LEBS;
++
++	main_lebs = c->leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS - log_lebs;
++	main_lebs -= orph_lebs;
++
++	lpt_first = UBIFS_LOG_LNUM + log_lebs;
++	c->lsave_cnt = DEFAULT_LSAVE_CNT;
++	err = ubifs_create_dflt_lpt(c, &main_lebs, lpt_first, &lpt_lebs,
++				    &big_lpt);
++	if (err)
++		return err;
++
++	dbg_gen("LEB Properties Tree created (LEBs %d-%d)", lpt_first,
++		lpt_first + lpt_lebs - 1);
++
++	main_first = c->leb_cnt - main_lebs;
++
++	/* Create default superblock */
++	tmp = ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size);
++	sup = kzalloc(tmp, GFP_KERNEL);
++	if (!sup)
++		return -ENOMEM;
++
++	tmp64 = (uint64_t)max_buds * c->leb_size;
++	if (big_lpt)
++		sup_flags |= UBIFS_FLG_BIGLPT;
++
++	sup->ch.node_type  = UBIFS_SB_NODE;
++	sup->key_hash      = UBIFS_KEY_HASH_R5;
++	sup->flags         = cpu_to_le32(sup_flags);
++	sup->min_io_size   = cpu_to_le32(c->min_io_size);
++	sup->leb_size      = cpu_to_le32(c->leb_size);
++	sup->leb_cnt       = cpu_to_le32(c->leb_cnt);
++	sup->max_leb_cnt   = cpu_to_le32(c->max_leb_cnt);
++	sup->max_bud_bytes = cpu_to_le64(tmp64);
++	sup->log_lebs      = cpu_to_le32(log_lebs);
++	sup->lpt_lebs      = cpu_to_le32(lpt_lebs);
++	sup->orph_lebs     = cpu_to_le32(orph_lebs);
++	sup->jhead_cnt     = cpu_to_le32(DEFAULT_JHEADS_CNT);
++	sup->fanout        = cpu_to_le32(DEFAULT_FANOUT);
++	sup->lsave_cnt     = cpu_to_le32(c->lsave_cnt);
++	sup->fmt_version   = cpu_to_le32(UBIFS_FORMAT_VERSION);
++	sup->default_compr = cpu_to_le16(DEFAULT_COMPRESSOR);
++	sup->time_gran     = cpu_to_le32(DEFAULT_TIME_GRAN);
++
++	generate_random_uuid(sup->uuid);
++
++	main_bytes = (uint64_t)main_lebs * c->leb_size;
++	tmp64 = main_bytes * DEFAULT_RP_PERCENT;
++	do_div(tmp64, 100);
++	if (tmp64 > DEFAULT_MAX_RP_SIZE)
++		tmp64 = DEFAULT_MAX_RP_SIZE;
++	sup->rp_size = cpu_to_le64(tmp64);
++
++	err = ubifs_write_node(c, sup, UBIFS_SB_NODE_SZ, 0, 0, UBI_LONGTERM);
++	kfree(sup);
++	if (err)
++		return err;
++
++	dbg_gen("default superblock created at LEB 0:0");
++
++	/* Create default master node */
++	mst = kzalloc(c->mst_node_alsz, GFP_KERNEL);
++	if (!mst)
++		return -ENOMEM;
++
++	mst->ch.node_type = UBIFS_MST_NODE;
++	mst->log_lnum     = cpu_to_le32(UBIFS_LOG_LNUM);
++	mst->highest_inum = cpu_to_le64(UBIFS_FIRST_INO);
++	mst->cmt_no       = 0;
++	mst->root_lnum    = cpu_to_le32(main_first + DEFAULT_IDX_LEB);
++	mst->root_offs    = 0;
++	tmp = ubifs_idx_node_sz(c, 1);
++	mst->root_len     = cpu_to_le32(tmp);
++	mst->gc_lnum      = cpu_to_le32(main_first + DEFAULT_GC_LEB);
++	mst->ihead_lnum   = cpu_to_le32(main_first + DEFAULT_IDX_LEB);
++	mst->ihead_offs   = cpu_to_le32(ALIGN(tmp, c->min_io_size));
++	mst->index_size   = cpu_to_le64(ALIGN(tmp, 8));
++	mst->lpt_lnum     = cpu_to_le32(c->lpt_lnum);
++	mst->lpt_offs     = cpu_to_le32(c->lpt_offs);
++	mst->nhead_lnum   = cpu_to_le32(c->nhead_lnum);
++	mst->nhead_offs   = cpu_to_le32(c->nhead_offs);
++	mst->ltab_lnum    = cpu_to_le32(c->ltab_lnum);
++	mst->ltab_offs    = cpu_to_le32(c->ltab_offs);
++	mst->lsave_lnum   = cpu_to_le32(c->lsave_lnum);
++	mst->lsave_offs   = cpu_to_le32(c->lsave_offs);
++	mst->lscan_lnum   = cpu_to_le32(main_first);
++	mst->empty_lebs   = cpu_to_le32(main_lebs - 2);
++	mst->idx_lebs     = cpu_to_le32(1);
++	mst->leb_cnt      = cpu_to_le32(c->leb_cnt);
++
++	/* Calculate lprops statistics */
++	tmp64 = main_bytes;
++	tmp64 -= ALIGN(ubifs_idx_node_sz(c, 1), c->min_io_size);
++	tmp64 -= ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size);
++	mst->total_free = cpu_to_le64(tmp64);
++
++	tmp64 = ALIGN(ubifs_idx_node_sz(c, 1), c->min_io_size);
++	ino_waste = ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size) -
++			  UBIFS_INO_NODE_SZ;
++	tmp64 += ino_waste;
++	tmp64 -= ALIGN(ubifs_idx_node_sz(c, 1), 8);
++	mst->total_dirty = cpu_to_le64(tmp64);
++
++	/*  The indexing LEB does not contribute to dark space */
++	tmp64 = (c->main_lebs - 1) * c->dark_wm;
++	mst->total_dark = cpu_to_le64(tmp64);
++
++	mst->total_used = cpu_to_le64(UBIFS_INO_NODE_SZ);
++
++	err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM, 0,
++			       UBI_UNKNOWN);
++	if (err) {
++		kfree(mst);
++		return err;
++	}
++	err = ubifs_write_node(c, mst, UBIFS_MST_NODE_SZ, UBIFS_MST_LNUM + 1, 0,
++			       UBI_UNKNOWN);
++	kfree(mst);
++	if (err)
++		return err;
++
++	dbg_gen("default master node created at LEB %d:0", UBIFS_MST_LNUM);
++
++	/* Create the root indexing node */
++	tmp = ubifs_idx_node_sz(c, 1);
++	idx = kzalloc(ALIGN(tmp, c->min_io_size), GFP_KERNEL);
++	if (!idx)
++		return -ENOMEM;
++
++	c->key_fmt = UBIFS_SIMPLE_KEY_FMT;
++	c->key_hash = key_r5_hash;
++
++	idx->ch.node_type = UBIFS_IDX_NODE;
++	idx->child_cnt = cpu_to_le16(1);
++	ino_key_init(c, &key, UBIFS_ROOT_INO);
++	br = ubifs_idx_branch(c, idx, 0);
++	key_write_idx(c, &key, &br->key);
++	br->lnum = cpu_to_le32(main_first + DEFAULT_DATA_LEB);
++	br->len  = cpu_to_le32(UBIFS_INO_NODE_SZ);
++	err = ubifs_write_node(c, idx, tmp, main_first + DEFAULT_IDX_LEB, 0,
++			       UBI_UNKNOWN);
++	kfree(idx);
++	if (err)
++		return err;
++
++	dbg_gen("default root indexing node created LEB %d:0",
++		main_first + DEFAULT_IDX_LEB);
++
++	/* Create default root inode */
++	tmp = ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size);
++	ino = kzalloc(tmp, GFP_KERNEL);
++	if (!ino)
++		return -ENOMEM;
++
++	ino_key_init_flash(c, &ino->key, UBIFS_ROOT_INO);
++	ino->ch.node_type = UBIFS_INO_NODE;
++	ino->creat_sqnum = cpu_to_le64(++c->max_sqnum);
++	ino->nlink = cpu_to_le32(2);
++	tmp = cpu_to_le64(CURRENT_TIME_SEC.tv_sec);
++	ino->atime_sec   = tmp;
++	ino->ctime_sec   = tmp;
++	ino->mtime_sec   = tmp;
++	ino->atime_nsec  = 0;
++	ino->ctime_nsec  = 0;
++	ino->mtime_nsec  = 0;
++	ino->mode = cpu_to_le32(S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO);
++	ino->size = cpu_to_le64(UBIFS_INO_NODE_SZ);
++
++	/* Set compression enabled by default */
++	ino->flags = cpu_to_le32(UBIFS_COMPR_FL);
++
++	err = ubifs_write_node(c, ino, UBIFS_INO_NODE_SZ,
++			       main_first + DEFAULT_DATA_LEB, 0,
++			       UBI_UNKNOWN);
++	kfree(ino);
++	if (err)
++		return err;
++
++	dbg_gen("root inode created at LEB %d:0",
++		main_first + DEFAULT_DATA_LEB);
++
++	/*
++	 * The first node in the log has to be the commit start node. This is
++	 * always the case during normal file-system operation. Write a fake
++	 * commit start node to the log.
++	 */
++	tmp = ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size);
++	cs = kzalloc(tmp, GFP_KERNEL);
++	if (!cs)
++		return -ENOMEM;
++
++	cs->ch.node_type = UBIFS_CS_NODE;
++	err = ubifs_write_node(c, cs, UBIFS_CS_NODE_SZ, UBIFS_LOG_LNUM,
++			       0, UBI_UNKNOWN);
++	kfree(cs);
++
++	ubifs_msg("default file-system created");
++	return 0;
++}
++
++/**
++ * validate_sb - validate superblock node.
++ * @c: UBIFS file-system description object
++ * @sup: superblock node
++ *
++ * This function validates superblock node @sup. Since most of data was read
++ * from the superblock and stored in @c, the function validates fields in @c
++ * instead. Returns zero in case of success and %-EINVAL in case of validation
++ * failure.
++ */
++static int validate_sb(struct ubifs_info *c, struct ubifs_sb_node *sup)
++{
++	long long max_bytes;
++	int err = 1;
++
++	if (!c->key_hash) {
++		err = 2;
++		goto failed;
++	}
++
++	if (sup->key_fmt != UBIFS_SIMPLE_KEY_FMT) {
++		err = 3;
++		goto failed;
++	}
++
++	if (le32_to_cpu(sup->min_io_size) != c->min_io_size) {
++		ubifs_err("min. I/O unit mismatch: %d in superblock, %d real",
++			  le32_to_cpu(sup->min_io_size), c->min_io_size);
++		goto failed;
++	}
++
++	if (le32_to_cpu(sup->leb_size) != c->leb_size) {
++		ubifs_err("LEB size mismatch: %d in superblock, %d real",
++			  le32_to_cpu(sup->leb_size), c->leb_size);
++		goto failed;
++	}
++
++	if (c->leb_cnt < UBIFS_MIN_LEB_CNT || c->leb_cnt > c->vi.size) {
++		ubifs_err("bad LEB count: %d in superblock, %d on UBI volume, "
++			  "%d minimum required", c->leb_cnt, c->vi.size,
++			  UBIFS_MIN_LEB_CNT);
++		goto failed;
++	}
++
++	if (c->max_leb_cnt < c->leb_cnt) {
++		ubifs_err("max. LEB count %d less than LEB count %d",
++			  c->max_leb_cnt, c->leb_cnt);
++		goto failed;
++	}
++
++	if (c->log_lebs < UBIFS_MIN_LOG_LEBS ||
++	    c->lpt_lebs < UBIFS_MIN_LPT_LEBS ||
++	    c->orph_lebs < UBIFS_MIN_ORPH_LEBS ||
++	    c->main_lebs < UBIFS_MIN_MAIN_LEBS) {
++		err = 6;
++		goto failed;
++	}
++
++	if (c->main_lebs < UBIFS_MIN_MAIN_LEBS) {
++		err = 7;
++		goto failed;
++	}
++
++	if (c->max_bud_bytes < (long long)c->leb_size * UBIFS_MIN_BUD_LEBS ||
++	    c->max_bud_bytes > (long long)c->leb_size * c->main_lebs) {
++		err = 8;
++		goto failed;
++	}
++
++	if (c->jhead_cnt < NONDATA_JHEADS_CNT + 1 ||
++	    c->jhead_cnt > NONDATA_JHEADS_CNT + UBIFS_MAX_JHEADS) {
++		err = 9;
++		goto failed;
++	}
++
++	if (c->fanout < UBIFS_MIN_FANOUT ||
++	    ubifs_idx_node_sz(c, c->fanout) > c->leb_size) {
++		err = 10;
++		goto failed;
++	}
++
++	if (c->lsave_cnt < 0 || (c->lsave_cnt > DEFAULT_LSAVE_CNT &&
++	    c->lsave_cnt > c->max_leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS -
++	    c->log_lebs - c->lpt_lebs - c->orph_lebs)) {
++		err = 11;
++		goto failed;
++	}
++
++	if (UBIFS_SB_LEBS + UBIFS_MST_LEBS + c->log_lebs + c->lpt_lebs +
++	    c->orph_lebs + c->main_lebs != c->leb_cnt) {
++		err = 12;
++		goto failed;
++	}
++
++	if (c->default_compr < 0 || c->default_compr >= UBIFS_COMPR_TYPES_CNT) {
++		err = 13;
++		goto failed;
++	}
++
++	max_bytes = c->main_lebs * (long long)c->leb_size;
++	if (c->rp_size < 0 || max_bytes < c->rp_size) {
++		err = 14;
++		goto failed;
++	}
++
++	if (le32_to_cpu(sup->time_gran) > 1000000000 ||
++	    le32_to_cpu(sup->time_gran) < 1) {
++		err = 15;
++		goto failed;
++	}
++
++	return 0;
++
++failed:
++	ubifs_err("bad superblock, error %d", err);
++	dbg_dump_node(c, sup);
++	return -EINVAL;
++}
++
++/**
++ * ubifs_read_sb_node - read superblock node.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns a pointer to the superblock node or a negative error
++ * code.
++ */
++struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c)
++{
++	struct ubifs_sb_node *sup;
++	int err;
++
++	sup = kmalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_NOFS);
++	if (!sup)
++		return ERR_PTR(-ENOMEM);
++
++	err = ubifs_read_node(c, sup, UBIFS_SB_NODE, UBIFS_SB_NODE_SZ,
++			      UBIFS_SB_LNUM, 0);
++	if (err) {
++		kfree(sup);
++		return ERR_PTR(err);
++	}
++
++	return sup;
++}
++
++/**
++ * ubifs_write_sb_node - write superblock node.
++ * @c: UBIFS file-system description object
++ * @sup: superblock node read with 'ubifs_read_sb_node()'
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_write_sb_node(struct ubifs_info *c, struct ubifs_sb_node *sup)
++{
++	int len = ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size);
++
++	ubifs_prepare_node(c, sup, UBIFS_SB_NODE_SZ, 1);
++	return ubi_leb_change(c->ubi, UBIFS_SB_LNUM, sup, len, UBI_LONGTERM);
++}
++
++/**
++ * ubifs_read_superblock - read superblock.
++ * @c: UBIFS file-system description object
++ *
++ * This function finds, reads and checks the superblock. If an empty UBI volume
++ * is being mounted, this function creates default superblock. Returns zero in
++ * case of success, and a negative error code in case of failure.
++ */
++int ubifs_read_superblock(struct ubifs_info *c)
++{
++	int err, sup_flags;
++	struct ubifs_sb_node *sup;
++
++	if (c->empty) {
++		err = create_default_filesystem(c);
++		if (err)
++			return err;
++	}
++
++	sup = ubifs_read_sb_node(c);
++	if (IS_ERR(sup))
++		return PTR_ERR(sup);
++
++	/*
++	 * The software supports all previous versions but not future versions,
++	 * due to the unavailability of time-travelling equipment.
++	 */
++	c->fmt_version = le32_to_cpu(sup->fmt_version);
++	if (c->fmt_version > UBIFS_FORMAT_VERSION) {
++		ubifs_err("on-flash format version is %d, but software only "
++			  "supports up to version %d", c->fmt_version,
++			  UBIFS_FORMAT_VERSION);
++		err = -EINVAL;
++		goto out;
++	}
++
++	if (c->fmt_version < 3) {
++		ubifs_err("on-flash format version %d is not supported",
++			  c->fmt_version);
++		err = -EINVAL;
++		goto out;
++	}
++
++	switch (sup->key_hash) {
++	case UBIFS_KEY_HASH_R5:
++		c->key_hash = key_r5_hash;
++		c->key_hash_type = UBIFS_KEY_HASH_R5;
++		break;
++
++	case UBIFS_KEY_HASH_TEST:
++		c->key_hash = key_test_hash;
++		c->key_hash_type = UBIFS_KEY_HASH_TEST;
++		break;
++	};
++
++	c->key_fmt = sup->key_fmt;
++
++	switch (c->key_fmt) {
++	case UBIFS_SIMPLE_KEY_FMT:
++		c->key_len = UBIFS_SK_LEN;
++		break;
++	default:
++		ubifs_err("unsupported key format");
++		err = -EINVAL;
++		goto out;
++	}
++
++	c->leb_cnt       = le32_to_cpu(sup->leb_cnt);
++	c->max_leb_cnt   = le32_to_cpu(sup->max_leb_cnt);
++	c->max_bud_bytes = le64_to_cpu(sup->max_bud_bytes);
++	c->log_lebs      = le32_to_cpu(sup->log_lebs);
++	c->lpt_lebs      = le32_to_cpu(sup->lpt_lebs);
++	c->orph_lebs     = le32_to_cpu(sup->orph_lebs);
++	c->jhead_cnt     = le32_to_cpu(sup->jhead_cnt) + NONDATA_JHEADS_CNT;
++	c->fanout        = le32_to_cpu(sup->fanout);
++	c->lsave_cnt     = le32_to_cpu(sup->lsave_cnt);
++	c->default_compr = le16_to_cpu(sup->default_compr);
++	c->rp_size       = le64_to_cpu(sup->rp_size);
++	c->rp_uid        = le32_to_cpu(sup->rp_uid);
++	c->rp_gid        = le32_to_cpu(sup->rp_gid);
++	sup_flags        = le32_to_cpu(sup->flags);
++
++	c->vfs_sb->s_time_gran = le32_to_cpu(sup->time_gran);
++
++	memcpy(&c->uuid, &sup->uuid, 16);
++
++	c->big_lpt = !!(sup_flags & UBIFS_FLG_BIGLPT);
++
++	/* Automatically increase file system size to the maximum size */
++	c->old_leb_cnt = c->leb_cnt;
++	if (c->leb_cnt < c->vi.size && c->leb_cnt < c->max_leb_cnt) {
++		c->leb_cnt = min_t(int, c->max_leb_cnt, c->vi.size);
++		if (c->vfs_sb->s_flags & MS_RDONLY)
++			dbg_mnt("Auto resizing (ro) from %d LEBs to %d LEBs",
++				c->old_leb_cnt,	c->leb_cnt);
++		else {
++			dbg_mnt("Auto resizing (sb) from %d LEBs to %d LEBs",
++				c->old_leb_cnt, c->leb_cnt);
++			sup->leb_cnt = cpu_to_le32(c->leb_cnt);
++			err = ubifs_write_sb_node(c, sup);
++			if (err)
++				goto out;
++			c->old_leb_cnt = c->leb_cnt;
++		}
++	}
++
++	c->log_bytes = (long long)c->log_lebs * c->leb_size;
++	c->log_last = UBIFS_LOG_LNUM + c->log_lebs - 1;
++	c->lpt_first = UBIFS_LOG_LNUM + c->log_lebs;
++	c->lpt_last = c->lpt_first + c->lpt_lebs - 1;
++	c->orph_first = c->lpt_last + 1;
++	c->orph_last = c->orph_first + c->orph_lebs - 1;
++	c->main_lebs = c->leb_cnt - UBIFS_SB_LEBS - UBIFS_MST_LEBS;
++	c->main_lebs -= c->log_lebs + c->lpt_lebs + c->orph_lebs;
++	c->main_first = c->leb_cnt - c->main_lebs;
++	c->report_rp_size = ubifs_reported_space(c, c->rp_size);
++
++	err = validate_sb(c, sup);
++out:
++	kfree(sup);
++	return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/scan.c avr32-2.6/fs/ubifs/scan.c
+--- linux-2.6.25.6/fs/ubifs/scan.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/scan.c	2008-06-12 15:09:45.515816461 +0200
+@@ -0,0 +1,362 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements the scan which is a general-purpose function for
++ * determining what nodes are in an eraseblock. The scan is used to replay the
++ * journal, to do garbage collection. for the TNC in-the-gaps method, and by
++ * debugging functions.
++ */
++
++#include "ubifs.h"
++
++/**
++ * scan_padding_bytes - scan for padding bytes.
++ * @buf: buffer to scan
++ * @len: length of buffer
++ *
++ * This function returns the number of padding bytes on success and
++ * %SCANNED_GARBAGE on failure.
++ */
++static int scan_padding_bytes(void *buf, int len)
++{
++	int pad_len = 0, max_pad_len = min_t(int, UBIFS_PAD_NODE_SZ, len);
++	uint8_t *p = buf;
++
++	dbg_scan("not a node");
++
++	while (pad_len < max_pad_len && *p++ == UBIFS_PADDING_BYTE)
++		pad_len += 1;
++
++	if (!pad_len || (pad_len & 7))
++		return SCANNED_GARBAGE;
++
++	dbg_scan("%d padding bytes", pad_len);
++
++	return pad_len;
++}
++
++/**
++ * ubifs_scan_a_node - scan for a node or padding.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to scan
++ * @len: length of buffer
++ * @lnum: logical eraseblock number
++ * @offs: offset within the logical eraseblock
++ * @quiet: print no messages
++ *
++ * This function returns a scanning code to indicate what was scanned.
++ */
++int ubifs_scan_a_node(const struct ubifs_info *c, void *buf, int len, int lnum,
++		      int offs, int quiet)
++{
++	struct ubifs_ch *ch = buf;
++	uint32_t magic;
++
++	magic = le32_to_cpu(ch->magic);
++
++	if (magic == 0xFFFFFFFF) {
++		dbg_scan("hit empty space");
++		return SCANNED_EMPTY_SPACE;
++	}
++
++	if (magic != UBIFS_NODE_MAGIC)
++		return scan_padding_bytes(buf, len);
++
++	if (len < UBIFS_CH_SZ)
++		return SCANNED_GARBAGE;
++
++	dbg_scan("scanning %s", dbg_ntype(ch->node_type));
++
++	if (ubifs_check_node(c, buf, lnum, offs, quiet))
++		return SCANNED_A_CORRUPT_NODE;
++
++	if (ch->node_type == UBIFS_PAD_NODE) {
++		struct ubifs_pad_node *pad = buf;
++		int pad_len = le32_to_cpu(pad->pad_len);
++		int node_len = le32_to_cpu(ch->len);
++
++		/* Validate the padding node */
++		if (pad_len < 0 ||
++		    offs + node_len + pad_len > c->leb_size) {
++			if (!quiet) {
++				ubifs_err("bad pad node at LEB %d:%d",
++					  lnum, offs);
++				dbg_dump_node(c, pad);
++			}
++			return SCANNED_A_BAD_PAD_NODE;
++		}
++
++		/* Make the node pads to 8-byte boundary */
++		if ((node_len + pad_len) & 7) {
++			if (!quiet) {
++				dbg_err("bad padding length %d - %d",
++					offs, offs + node_len + pad_len);
++			}
++			return SCANNED_A_BAD_PAD_NODE;
++		}
++
++		dbg_scan("%d bytes padded, offset now %d",
++			 pad_len, ALIGN(offs + node_len + pad_len, 8));
++
++		return node_len + pad_len;
++	}
++
++	return SCANNED_A_NODE;
++}
++
++/**
++ * ubifs_start_scan - create LEB scanning information at start of scan.
++ * @c: UBIFS file-system description object
++ * @lnum: logical eraseblock number
++ * @offs: offset to start at (usually zero)
++ * @sbuf: scan buffer (must be c->leb_size)
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++struct ubifs_scan_leb *ubifs_start_scan(const struct ubifs_info *c, int lnum,
++					int offs, void *sbuf)
++{
++	struct ubifs_scan_leb *sleb;
++	int err;
++
++	dbg_scan("scan LEB %d:%d", lnum, offs);
++
++	sleb = kzalloc(sizeof(struct ubifs_scan_leb), GFP_NOFS);
++	if (!sleb)
++		return ERR_PTR(-ENOMEM);
++
++	sleb->lnum = lnum;
++	INIT_LIST_HEAD(&sleb->nodes);
++	sleb->buf = sbuf;
++
++	err = ubi_read(c->ubi, lnum, sbuf + offs, offs, c->leb_size - offs);
++	if (err && err != -EBADMSG) {
++		ubifs_err("cannot read %d bytes from LEB %d:%d,"
++			  " error %d", c->leb_size - offs, lnum, offs, err);
++		kfree(sleb);
++		return ERR_PTR(err);
++	}
++
++	if (err == -EBADMSG)
++		sleb->ecc = 1;
++
++	return sleb;
++}
++
++/**
++ * ubifs_end_scan - update LEB scanning information at end of scan.
++ * @c: UBIFS file-system description object
++ * @sleb: scanning information
++ * @lnum: logical eraseblock number
++ * @offs: offset to start at (usually zero)
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++void ubifs_end_scan(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++		    int lnum, int offs)
++{
++	lnum = lnum;
++	dbg_scan("stop scanning LEB %d at offset %d", lnum, offs);
++	ubifs_assert(offs % c->min_io_size == 0);
++
++	sleb->endpt = ALIGN(offs, c->min_io_size);
++}
++
++/**
++ * ubifs_add_snod - add a scanned node to LEB scanning information.
++ * @c: UBIFS file-system description object
++ * @sleb: scanning information
++ * @buf: buffer containing node
++ * @offs: offset of node on flash
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++int ubifs_add_snod(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++		   void *buf, int offs)
++{
++	struct ubifs_ch *ch = buf;
++	struct ubifs_ino_node *ino = buf;
++	struct ubifs_scan_node *snod;
++
++	snod = kzalloc(sizeof(struct ubifs_scan_node), GFP_NOFS);
++	if (!snod)
++		return -ENOMEM;
++
++	snod->sqnum = le64_to_cpu(ch->sqnum);
++	snod->type = ch->node_type;
++	snod->offs = offs;
++	snod->len = le32_to_cpu(ch->len);
++	snod->node = buf;
++
++	switch (ch->node_type) {
++	case UBIFS_INO_NODE:
++	case UBIFS_DENT_NODE:
++	case UBIFS_XENT_NODE:
++	case UBIFS_DATA_NODE:
++	case UBIFS_TRUN_NODE:
++		/*
++		 * The key is in the same place in all keyed
++		 * nodes.
++		 */
++		key_read(c, &ino->key, &snod->key);
++		break;
++	}
++	list_add_tail(&snod->list, &sleb->nodes);
++	sleb->nodes_cnt += 1;
++	return 0;
++}
++
++/**
++ * ubifs_scanned_corruption - print information after UBIFS scanned corruption.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of corruption
++ * @offs: offset of corruption
++ * @buf: buffer containing corruption
++ */
++void ubifs_scanned_corruption(const struct ubifs_info *c, int lnum, int offs,
++			      void *buf)
++{
++	int len;
++
++	ubifs_err("corrupted data at LEB %d:%d", lnum, offs);
++	if (dbg_failure_mode)
++		return;
++	len = c->leb_size - offs;
++	if (len > 4096)
++		len = 4096;
++	dbg_err("first %d bytes from LEB %d:%d", len, lnum, offs);
++	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 4, buf, len, 1);
++}
++
++/**
++ * ubifs_scan - scan a logical eraseblock.
++ * @c: UBIFS file-system description object
++ * @lnum: logical eraseblock number
++ * @offs: offset to start at (usually zero)
++ * @sbuf: scan buffer (must be c->leb_size)
++ *
++ * This function scans LEB number @lnum and returns complete information about
++ * its contents. Returns an error code in case of failure.
++ */
++struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum,
++				  int offs, void *sbuf)
++{
++	void *buf = sbuf + offs;
++	int err, len = c->leb_size - offs;
++	struct ubifs_scan_leb *sleb;
++
++	sleb = ubifs_start_scan(c, lnum, offs, sbuf);
++	if (IS_ERR(sleb))
++		return sleb;
++
++	while (len >= 8) {
++		struct ubifs_ch *ch = buf;
++		int node_len, ret;
++
++		dbg_scan("look at LEB %d:%d (%d bytes left)",
++			 lnum, offs, len);
++
++		cond_resched();
++
++		ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 0);
++
++		if (ret > 0) {
++			/* Padding bytes or a valid padding node */
++			offs += ret;
++			buf += ret;
++			len -= ret;
++			continue;
++		}
++
++		if (ret == SCANNED_EMPTY_SPACE)
++			/* Empty space is checked later */
++			break;
++
++		switch (ret) {
++		case SCANNED_GARBAGE:
++			dbg_err("garbage");
++			goto corrupted;
++		case SCANNED_A_NODE:
++			break;
++		case SCANNED_A_CORRUPT_NODE:
++		case SCANNED_A_BAD_PAD_NODE:
++			dbg_err("bad node");
++			goto corrupted;
++		default:
++			dbg_err("unknown");
++			goto corrupted;
++		}
++
++		err = ubifs_add_snod(c, sleb, buf, offs);
++		if (err)
++			goto error;
++
++		node_len = ALIGN(le32_to_cpu(ch->len), 8);
++		offs += node_len;
++		buf += node_len;
++		len -= node_len;
++	}
++
++	if (offs % c->min_io_size)
++		goto corrupted;
++
++	ubifs_end_scan(c, sleb, lnum, offs);
++
++	for (; len > 4; offs += 4, buf = buf + 4, len -= 4)
++		if (*(uint32_t *)buf != 0xffffffff)
++			break;
++	for (; len; offs++, buf++, len--)
++		if (*(uint8_t *)buf != 0xff) {
++			ubifs_err("corrupt empty space at LEB %d:%d",
++				  lnum, offs);
++			goto corrupted;
++		}
++
++	return sleb;
++
++corrupted:
++	ubifs_scanned_corruption(c, lnum, offs, buf);
++	err = -EUCLEAN;
++error:
++	ubifs_err("LEB %d scanning failed", lnum);
++	ubifs_scan_destroy(sleb);
++	return ERR_PTR(err);
++}
++
++/**
++ * ubifs_scan_destroy - destroy LEB scanning information.
++ * @sleb: scanning information to free
++ */
++void ubifs_scan_destroy(struct ubifs_scan_leb *sleb)
++{
++	struct ubifs_scan_node *node;
++	struct list_head *head;
++
++	head = &sleb->nodes;
++	while (!list_empty(head)) {
++		node = list_entry(head->next, struct ubifs_scan_node, list);
++		list_del(&node->list);
++		kfree(node);
++	}
++	kfree(sleb);
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/shrinker.c avr32-2.6/fs/ubifs/shrinker.c
+--- linux-2.6.25.6/fs/ubifs/shrinker.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/shrinker.c	2008-06-12 15:09:45.515816461 +0200
+@@ -0,0 +1,322 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file implements UBIFS shrinker which evicts clean znodes from the TNC
++ * tree when Linux VM needs more RAM.
++ *
++ * We do not implement any LRU lists to find oldest znodes to free because it
++ * would add additional overhead to the file system fast paths. So the shrinker
++ * just walks the TNC tree when searching for znodes to free.
++ *
++ * If the root of a TNC sub-tree is clean and old enough, then the children are
++ * also clean and old enough. So the shrinker walks the TNC in level order and
++ * dumps entire sub-trees.
++ *
++ * The age of znodes is just the time-stamp when they were last looked at.
++ * The current shrinker first tries to evict old znodes, then young ones.
++ *
++ * Since the shrinker is global, it has to protect against races with FS
++ * un-mounts, which is done by the 'ubifs_infos_lock' and 'c->umount_mutex'.
++ */
++
++#include "ubifs.h"
++
++/* List of all UBIFS file-system instances */
++LIST_HEAD(ubifs_infos);
++
++/*
++ * We number each shrinker run and record the number on the ubifs_info structure
++ * so that we can easily work out which ubifs_info structures have already been
++ * done by the current run.
++ */
++static unsigned int shrinker_run_no;
++
++/* Protects 'ubifs_infos' list */
++DEFINE_SPINLOCK(ubifs_infos_lock);
++
++/* Global clean znode counter (for all mounted UBIFS instances) */
++atomic_long_t ubifs_clean_zn_cnt;
++
++/**
++ * shrink_tnc - shrink TNC tree.
++ * @c: UBIFS file-system description object
++ * @nr: number of znodes to free
++ * @age: the age of znodes to free
++ * @contention: if any contention, this is set to %1
++ *
++ * This function traverses TNC tree and frees clean znodes. It does not free
++ * clean znodes which younger then @age. Returns number of freed znodes.
++ */
++static int shrink_tnc(struct ubifs_info *c, int nr, int age, int *contention)
++{
++	int total_freed = 0;
++	struct ubifs_znode *znode, *zprev;
++	int time = get_seconds();
++
++	ubifs_assert(mutex_is_locked(&c->umount_mutex));
++	ubifs_assert(mutex_is_locked(&c->tnc_mutex));
++
++	if (!c->zroot.znode || atomic_long_read(&c->clean_zn_cnt) == 0)
++		return 0;
++
++	/*
++	 * Traverse the TNC tree in levelorder manner, so that it is possible
++	 * to destroy large sub-trees. Indeed, if a znode is old, then all its
++	 * children are older or of the same age.
++	 *
++	 * Note, we are holding 'c->tnc_mutex', so we do not have to lock the
++	 * 'c->space_lock' when _reading_ 'c->clean_zn_cnt', because it is
++	 * changed only when the 'c->tnc_mutex' is held.
++	 */
++	zprev = NULL;
++	znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL);
++	while (znode && total_freed < nr &&
++	       atomic_long_read(&c->clean_zn_cnt) > 0) {
++		int freed;
++
++		/*
++		 * If the znode is clean, but it is in the 'c->cnext' list, this
++		 * means that this znode has just been written to flash as a
++		 * part of commit and was marked clean. They will be removed
++		 * from the list at end commit. We cannot change the list,
++		 * because it is not protected by any mutex (design decision to
++		 * make commit really independent and parallel to main I/O). So
++		 * we just skip these znodes.
++		 *
++		 * Note, the 'clean_zn_cnt' counters are not updated until
++		 * after the commit, so the UBIFS shrinker does not report
++		 * the znodes which are in the 'c->cnext' list as freeable.
++		 *
++		 * Also note, if the root of a sub-tree is not in 'c->cnext',
++		 * then the whole sub-tree is not in 'c->cnext' as well, so it
++		 * is safe to dump whole sub-tree.
++		 */
++
++		if (znode->cnext) {
++			/*
++			 * Very soon these znodes will be removed from the list
++			 * and become freeable.
++			 */
++			*contention = 1;
++		} else if (!ubifs_zn_dirty(znode) &&
++			   abs(time - znode->time) >= age) {
++			if (znode->parent)
++				znode->parent->zbranch[znode->iip].znode = NULL;
++			else
++				c->zroot.znode = NULL;
++
++			freed = ubifs_destroy_tnc_subtree(znode);
++			atomic_long_sub(freed, &ubifs_clean_zn_cnt);
++			atomic_long_sub(freed, &c->clean_zn_cnt);
++			ubifs_assert(atomic_long_read(&c->clean_zn_cnt) >= 0);
++			total_freed += freed;
++			znode = zprev;
++		}
++
++		if (unlikely(!c->zroot.znode))
++			break;
++
++		zprev = znode;
++		znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode);
++		cond_resched();
++	}
++
++	return total_freed;
++}
++
++/**
++ * shrink_tnc_trees - shrink UBIFS TNC trees.
++ * @nr: number of znodes to free
++ * @age: the age of znodes to free
++ * @contention: if any contention, this is set to %1
++ *
++ * This function walks the list of mounted UBIFS file-systems and frees clean
++ * znodes which are older then @age, until at least @nr znodes are freed.
++ * Returns the number of freed znodes.
++ */
++static int shrink_tnc_trees(int nr, int age, int *contention)
++{
++	struct ubifs_info *c;
++	struct list_head *p;
++	unsigned int run_no;
++	int freed = 0;
++
++	spin_lock(&ubifs_infos_lock);
++	do
++		run_no = ++shrinker_run_no;
++	while (run_no == 0);
++	/* Iterate over all mounted UBIFS file-systems and try to shrink them */
++	p = ubifs_infos.next;
++	while (p != &ubifs_infos) {
++		c = list_entry(p, struct ubifs_info, infos_list);
++		/*
++		 * We move the ones we do to the end of the list, so we stop
++		 * when we see one we have already done.
++		 */
++		if (c->shrinker_run_no == run_no)
++			break;
++		if (!mutex_trylock(&c->umount_mutex)) {
++			/* Some un-mount is in progress, try next FS */
++			*contention = 1;
++			p = p->next;
++			continue;
++		}
++		/*
++		 * We're holding 'c->umount_mutex', so the file-system won't go
++		 * away.
++		 */
++		if (!mutex_trylock(&c->tnc_mutex)) {
++			mutex_unlock(&c->umount_mutex);
++			*contention = 1;
++			p = p->next;
++			continue;
++		}
++		spin_unlock(&ubifs_infos_lock);
++		/*
++		 * OK, now we have TNC locked, the file-system cannot go away -
++		 * it is safe to reap the cache.
++		 */
++		c->shrinker_run_no = run_no;
++		freed += shrink_tnc(c, nr, age, contention);
++		mutex_unlock(&c->tnc_mutex);
++		spin_lock(&ubifs_infos_lock);
++		/* Get the next list element before we move this one */
++		p = p->next;
++		/*
++		 * Move this one to the end of the list to provide some
++		 * fairness.
++		 */
++		list_del(&c->infos_list);
++		list_add_tail(&c->infos_list, &ubifs_infos);
++		mutex_unlock(&c->umount_mutex);
++		if (freed >= nr)
++			break;
++	}
++	spin_unlock(&ubifs_infos_lock);
++	return freed;
++}
++
++/**
++ * kick_a_thread - kick a background thread to start commit.
++ *
++ * This function kicks a background thread to start background commit. Returns
++ * %-1 if a thread was kicked or there is another reason to assume the memory
++ * will soon be freed or become freeable. If there are no dirty znodes, returns
++ * %0.
++ */
++static int kick_a_thread(void)
++{
++	int i;
++	struct ubifs_info *c;
++
++	/*
++	 * Iterate over all mounted UBIFS file-systems and find out if there is
++	 * already an ongoing commit operation there. If no, then iterate for
++	 * the second time and initiate background commit.
++	 */
++	spin_lock(&ubifs_infos_lock);
++	for (i = 0; i < 2; i++) {
++		list_for_each_entry(c, &ubifs_infos, infos_list) {
++			long dirty_zn_cnt;
++
++			if (!mutex_trylock(&c->umount_mutex)) {
++				/*
++				 * Some un-mount is in progress, it will
++				 * certainly free memory, so just return.
++				 */
++				spin_unlock(&ubifs_infos_lock);
++				return -1;
++			}
++
++			dirty_zn_cnt = atomic_long_read(&c->dirty_zn_cnt);
++
++			if (!dirty_zn_cnt || c->cmt_state == COMMIT_BROKEN ||
++			    c->ro_media) {
++				mutex_unlock(&c->umount_mutex);
++				continue;
++			}
++
++			if (c->cmt_state != COMMIT_RESTING) {
++				spin_unlock(&ubifs_infos_lock);
++				mutex_unlock(&c->umount_mutex);
++				return -1;
++			}
++
++			if (i == 1) {
++				list_del(&c->infos_list);
++				list_add_tail(&c->infos_list, &ubifs_infos);
++				spin_unlock(&ubifs_infos_lock);
++
++				ubifs_request_bg_commit(c);
++				mutex_unlock(&c->umount_mutex);
++				return -1;
++			}
++			mutex_unlock(&c->umount_mutex);
++		}
++	}
++	spin_unlock(&ubifs_infos_lock);
++
++	return 0;
++}
++
++int ubifs_shrinker(int nr, gfp_t gfp_mask)
++{
++	int freed, contention = 0;
++	long clean_zn_cnt = atomic_long_read(&ubifs_clean_zn_cnt);
++
++	if (nr == 0)
++		return clean_zn_cnt;
++
++	if (!clean_zn_cnt) {
++		/*
++		 * No clean znodes, nothing to reap. All we can do in this case
++		 * is to kick background threads to start commit, which will
++		 * probably make clean znodes which, in turn, will be freeable.
++		 * And we return -1 which means will make VM call us again
++		 * later.
++		 */
++		dbg_tnc("no clean znodes, kick a thread");
++		return kick_a_thread();
++	}
++
++	freed = shrink_tnc_trees(nr, OLD_ZNODE_AGE, &contention);
++	if (freed >= nr)
++		goto out;
++
++	dbg_tnc("not enough old znodes, try to free young ones");
++	freed += shrink_tnc_trees(nr - freed, YOUNG_ZNODE_AGE, &contention);
++	if (freed >= nr)
++		goto out;
++
++	dbg_tnc("not enough young znodes, free all");
++	freed += shrink_tnc_trees(nr - freed, 0, &contention);
++
++	if (!freed && contention) {
++		dbg_tnc("freed nothing, but contention");
++		return -1;
++	}
++
++out:
++	dbg_tnc("%d znodes were freed, requested %d", freed, nr);
++	return freed;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/super.c avr32-2.6/fs/ubifs/super.c
+--- linux-2.6.25.6/fs/ubifs/super.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/super.c	2008-06-12 15:09:45.600758286 +0200
+@@ -0,0 +1,1969 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file implements UBIFS initialization and VFS superblock operations. Some
++ * initialization stuff which is rather large and complex is placed at
++ * corresponding subsystems, but most of it is here.
++ */
++
++#include <linux/init.h>
++#include <linux/slab.h>
++#include <linux/module.h>
++#include <linux/ctype.h>
++#include <linux/random.h>
++#include <linux/kthread.h>
++#include <linux/parser.h>
++#include <linux/seq_file.h>
++#include <linux/mount.h>
++#include "ubifs.h"
++
++/* Slab cache for UBIFS inodes */
++struct kmem_cache *ubifs_inode_slab;
++
++/* UBIFS TNC shrinker description */
++static struct shrinker ubifs_shrinker_info = {
++	.shrink = ubifs_shrinker,
++	.seeks = DEFAULT_SEEKS,
++};
++
++/**
++ * validate_inode - validate inode.
++ * @c: UBIFS file-system description object
++ * @inode: the inode to validate
++ *
++ * This is a helper function for 'ubifs_iget()' which validates various fields
++ * of a newly built inode to make sure they contain sane values and prevent
++ * possible vulnerabilities. Returns zero if the inode is all right and
++ * a non-zero error code if not.
++ */
++static int validate_inode(struct ubifs_info *c, const struct inode *inode)
++{
++	int err;
++	const struct ubifs_inode *ui = ubifs_inode(inode);
++
++	if (inode->i_size > c->max_inode_sz) {
++		ubifs_err("inode is too large (%lld)",
++			  (long long)inode->i_size);
++		return 1;
++	}
++
++	if (ui->compr_type < 0 || ui->compr_type >= UBIFS_COMPR_TYPES_CNT) {
++		ubifs_err("unknown compression type %d", ui->compr_type);
++		return 2;
++	}
++
++	if (ui->xattr_cnt < 0)
++		return 3;
++
++	if (ui->xattr_size < 0)
++		return 4;
++
++	if (ui->xattr_names < 0 ||
++	    ui->xattr_names + ui->xattr_cnt > XATTR_LIST_MAX)
++		return 5;
++
++	if (ui->data_len < 0 || ui->data_len > UBIFS_MAX_INO_DATA)
++		return 6;
++
++	if (!ubifs_compr_present(ui->compr_type)) {
++		ubifs_warn("inode %lu uses '%s' compression, but it was not "
++			   "compiled in", inode->i_ino,
++			   ubifs_compr_name(ui->compr_type));
++	}
++
++	err = dbg_check_dir_size(c, inode);
++	return err;
++}
++
++struct inode *ubifs_iget(struct super_block *sb, unsigned long inum)
++{
++	int err;
++	union ubifs_key key;
++	struct ubifs_ino_node *ino;
++	struct ubifs_info *c = sb->s_fs_info;
++	struct inode *inode;
++	struct ubifs_inode *ui;
++
++	dbg_gen("inode %lu", inum);
++
++	inode = iget_locked(sb, inum);
++	if (!inode)
++		return ERR_PTR(-ENOMEM);
++	if (!(inode->i_state & I_NEW))
++		return inode;
++	ui = ubifs_inode(inode);
++
++	ino = kmalloc(UBIFS_MAX_INO_NODE_SZ, GFP_NOFS);
++	if (!ino) {
++		err = -ENOMEM;
++		goto out;
++	}
++
++	ino_key_init(c, &key, inode->i_ino);
++
++	err = ubifs_tnc_lookup(c, &key, ino);
++	if (err)
++		goto out_ino;
++
++	inode->i_flags |= (S_NOCMTIME | S_NOATIME);
++	inode->i_nlink = le32_to_cpu(ino->nlink);
++	inode->i_uid   = le32_to_cpu(ino->uid);
++	inode->i_gid   = le32_to_cpu(ino->gid);
++	inode->i_atime.tv_sec  = (int64_t)le64_to_cpu(ino->atime_sec);
++	inode->i_atime.tv_nsec = le32_to_cpu(ino->atime_nsec);
++	inode->i_mtime.tv_sec  = (int64_t)le64_to_cpu(ino->mtime_sec);
++	inode->i_mtime.tv_nsec = le32_to_cpu(ino->mtime_nsec);
++	inode->i_ctime.tv_sec  = (int64_t)le64_to_cpu(ino->ctime_sec);
++	inode->i_ctime.tv_nsec = le32_to_cpu(ino->ctime_nsec);
++	inode->i_mode  = le32_to_cpu(ino->mode);
++	inode->i_size  = le64_to_cpu(ino->size);
++
++	ui->data_len    = le32_to_cpu(ino->data_len);
++	ui->flags       = le32_to_cpu(ino->flags);
++	ui->compr_type  = le16_to_cpu(ino->compr_type);
++	ui->creat_sqnum = le64_to_cpu(ino->creat_sqnum);
++	ui->xattr_cnt   = le32_to_cpu(ino->xattr_cnt);
++	ui->xattr_size  = le64_to_cpu(ino->xattr_size);
++	ui->xattr_names = le32_to_cpu(ino->xattr_names);
++
++	err = validate_inode(c, inode);
++	if (err)
++		goto out_invalid;
++
++	/* Disable readahead */
++	inode->i_mapping->backing_dev_info = &ubifs_backing_dev_info;
++
++	switch (inode->i_mode & S_IFMT) {
++	case S_IFREG:
++		inode->i_mapping->a_ops = &ubifs_file_address_operations;
++		inode->i_op = &ubifs_file_inode_operations;
++		inode->i_fop = &ubifs_file_operations;
++		if (ui->data_len != 0) {
++			err = 10;
++			goto out_invalid;
++		}
++		break;
++	case S_IFDIR:
++		inode->i_op  = &ubifs_dir_inode_operations;
++		inode->i_fop = &ubifs_dir_operations;
++		if (ui->data_len != 0) {
++			err = 11;
++			goto out_invalid;
++		}
++		break;
++	case S_IFLNK:
++		inode->i_op = &ubifs_symlink_inode_operations;
++		if (ui->data_len <= 0 || ui->data_len > UBIFS_MAX_INO_DATA) {
++			err = 12;
++			goto out_invalid;
++		}
++		ui->data = kmalloc(ui->data_len + 1, GFP_NOFS);
++		if (!ui->data) {
++			err = -ENOMEM;
++			goto out_ino;
++		}
++		memcpy(ui->data, ino->data, ui->data_len);
++		((char *)ui->data)[ui->data_len] = '\0';
++		break;
++	case S_IFBLK:
++	case S_IFCHR:
++	{
++		dev_t rdev;
++		union ubifs_dev_desc *dev;
++
++		ui->data = kmalloc(sizeof(union ubifs_dev_desc), GFP_NOFS);
++		if (!ui->data) {
++			err = -ENOMEM;
++			goto out_ino;
++		}
++
++		dev = (union ubifs_dev_desc *)ino->data;
++		if (ui->data_len == sizeof(dev->new))
++			rdev = new_decode_dev(le32_to_cpu(dev->new));
++		else if (ui->data_len == sizeof(dev->huge))
++			rdev = huge_decode_dev(le64_to_cpu(dev->huge));
++		else {
++			err = 13;
++			goto out_invalid;
++		}
++		memcpy(ui->data, ino->data, ui->data_len);
++		inode->i_op = &ubifs_file_inode_operations;
++		init_special_inode(inode, inode->i_mode, rdev);
++		break;
++	}
++	case S_IFSOCK:
++	case S_IFIFO:
++		inode->i_op = &ubifs_file_inode_operations;
++		init_special_inode(inode, inode->i_mode, 0);
++		if (ui->data_len != 0) {
++			err = 14;
++			goto out_invalid;
++		}
++		break;
++	default:
++		err = 15;
++		goto out_invalid;
++	}
++
++	kfree(ino);
++	ubifs_set_inode_flags(inode);
++	unlock_new_inode(inode);
++	return inode;
++
++out_invalid:
++	ubifs_err("inode %lu validation failed, error %d", inode->i_ino, err);
++	dbg_dump_node(c, ino);
++	dbg_dump_inode(c, inode);
++	err = -EINVAL;
++out_ino:
++	kfree(ino);
++out:
++	ubifs_err("failed to read inode %lu, error %d", inode->i_ino, err);
++	iget_failed(inode);
++	return ERR_PTR(err);
++}
++
++static struct inode *ubifs_alloc_inode(struct super_block *sb)
++{
++	struct ubifs_inode *ui;
++
++	ui = kmem_cache_alloc(ubifs_inode_slab, GFP_NOFS);
++	if (!ui)
++		return NULL;
++
++	memset((void *)ui + sizeof(struct inode), 0,
++	       sizeof(struct ubifs_inode) - sizeof(struct inode));
++	mutex_init(&ui->budg_mutex);
++	return &ui->vfs_inode;
++};
++
++static void ubifs_destroy_inode(struct inode *inode)
++{
++	struct ubifs_inode *ui = ubifs_inode(inode);
++
++	kfree(ui->data);
++	kmem_cache_free(ubifs_inode_slab, inode);
++}
++
++/*
++ * Note, Linux write-back code calls this without 'i_mutex'.
++ */
++static int ubifs_write_inode(struct inode *inode, int wait)
++{
++	int err;
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	struct ubifs_inode *ui = ubifs_inode(inode);
++	struct ubifs_budget_req req = {.dd_growth = c->inode_budget,
++				       .dirtied_ino_d = ui->data_len};
++
++	ubifs_assert(!ui->xattr);
++	if (is_bad_inode(inode))
++		return 0;
++
++	mutex_lock(&ui->budg_mutex);
++
++	/*
++	 * Due to races between write-back forced by budgeting
++	 * (see 'sync_some_inodes()') and pdflush write-back, the inode may
++	 * have already been synchronized, do not do this again.
++	 *
++	 * This might also happen if it was synchronized in e.g. ubifs_link()',
++	 * etc.
++	 */
++	if (!ui->dirty) {
++		mutex_unlock(&ui->budg_mutex);
++		return 0;
++	}
++
++	ubifs_assert(ui->budgeted);
++	dbg_gen("inode %lu", inode->i_ino);
++
++	err = ubifs_jnl_write_inode(c, inode, 0, IS_SYNC(inode));
++	if (err)
++		ubifs_err("can't write inode %lu, error %d", inode->i_ino, err);
++
++	ui->dirty = 0;
++	UBIFS_DBG(ui->budgeted = 0);
++	atomic_long_dec(&c->dirty_ino_cnt);
++
++	ubifs_release_budget(c, &req);
++	mutex_unlock(&ui->budg_mutex);
++
++	return err;
++}
++
++static void ubifs_delete_inode(struct inode *inode)
++{
++	struct ubifs_info *c = inode->i_sb->s_fs_info;
++	struct ubifs_inode *ui = ubifs_inode(inode);
++	struct ubifs_budget_req req = {.dd_growth = c->inode_budget,
++				       .dirtied_ino_d = ui->data_len};
++	int err;
++
++	if (ui->xattr) {
++		/*
++		 * Extended attribute inode deletions are fully handled in
++		 * 'ubifs_removexattr()'. These inodes are special and have
++		 * limited usage, so there is nothing to do here.
++		 */
++		ubifs_assert(!ui->dirty);
++		goto out;
++	}
++
++	dbg_gen("inode %lu", inode->i_ino);
++	ubifs_assert(!atomic_read(&inode->i_count));
++	ubifs_assert(inode->i_nlink == 0);
++
++	truncate_inode_pages(&inode->i_data, 0);
++	if (is_bad_inode(inode))
++		goto out;
++
++	mutex_lock(&ui->budg_mutex);
++
++	inode->i_size = 0;
++
++	err = ubifs_jnl_write_inode(c, inode, 1, IS_SYNC(inode));
++	if (err)
++		/*
++		 * Worst case we have a lost orphan inode wasting space, so a
++		 * simple error message is ok here.
++		 */
++		ubifs_err("can't write inode %lu, error %d", inode->i_ino, err);
++
++	if (ui->dirty) {
++		ubifs_assert(ui->budgeted);
++		atomic_long_dec(&c->dirty_ino_cnt);
++		ui->dirty = 0;
++		UBIFS_DBG(ui->budgeted = 0);
++		ubifs_release_budget(c, &req);
++	}
++
++	mutex_unlock(&ui->budg_mutex);
++out:
++	clear_inode(inode);
++}
++
++static void ubifs_dirty_inode(struct inode *inode)
++{
++	struct ubifs_inode *ui = ubifs_inode(inode);
++
++	ubifs_assert(mutex_is_locked(&ui->budg_mutex));
++	if (!ui->dirty) {
++		struct ubifs_info *c = inode->i_sb->s_fs_info;
++
++		ui->dirty = 1;
++		atomic_long_inc(&c->dirty_ino_cnt);
++		dbg_gen("inode %lu",  inode->i_ino);
++	}
++}
++
++static int ubifs_statfs(struct dentry *dentry, struct kstatfs *buf)
++{
++	struct ubifs_info *c = dentry->d_sb->s_fs_info;
++	unsigned long long free;
++
++	free = ubifs_budg_get_free_space(c);
++	dbg_gen("free space %lld bytes (%lld blocks)",
++		free, free >> UBIFS_BLOCK_SHIFT);
++
++	buf->f_type = UBIFS_SUPER_MAGIC;
++	buf->f_bsize = UBIFS_BLOCK_SIZE;
++	buf->f_blocks = c->block_cnt;
++	buf->f_bfree = free >> UBIFS_BLOCK_SHIFT;
++	if (free > c->report_rp_size)
++		buf->f_bavail = (free - c->report_rp_size) >> UBIFS_BLOCK_SHIFT;
++	else
++		buf->f_bavail = 0;
++	buf->f_files = 0;
++	buf->f_ffree = 0;
++	buf->f_namelen = UBIFS_MAX_NLEN;
++
++	return 0;
++}
++
++static int ubifs_show_options(struct seq_file *s, struct vfsmount *mnt)
++{
++	struct ubifs_info *c = mnt->mnt_sb->s_fs_info;
++
++	if (c->mount_opts.unmount_mode == 2)
++		seq_printf(s, ",fast_unmount");
++	else if (c->mount_opts.unmount_mode == 1)
++		seq_printf(s, ",norm_unmount");
++
++	return 0;
++}
++
++static int ubifs_sync_fs(struct super_block *sb, int wait)
++{
++	struct ubifs_info *c = sb->s_fs_info;
++	int i, ret = 0, err;
++
++	if (c->jheads)
++		for (i = 0; i < c->jhead_cnt; i++) {
++			err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
++			if (err && !ret)
++				ret = err;
++		}
++	/*
++	 * We ought to call sync for c->ubi but it does not have one. If it had
++	 * it would in turn call mtd->sync, however mtd operations are
++	 * synchronous anyway, so we don't lose any sleep here.
++	 */
++	return ret;
++}
++
++/**
++ * init_constants_early - initialize UBIFS constants.
++ * @c: UBIFS file-system description object
++ *
++ * This function initialize UBIFS constants which do not need the superblock to
++ * be read. It also checks that the UBI volume satisfies basic UBIFS
++ * requirements. Returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int init_constants_early(struct ubifs_info *c)
++{
++	if (c->vi.corrupted) {
++		ubifs_warn("UBI volume is corrupted - read-only mode");
++		c->ro_media = 1;
++	}
++
++	if (c->di.ro_mode) {
++		ubifs_msg("read-only UBI device");
++		c->ro_media = 1;
++	}
++
++	if (c->vi.vol_type == UBI_STATIC_VOLUME) {
++		ubifs_msg("static UBI volume - read-only mode");
++		c->ro_media = 1;
++	}
++
++	c->leb_cnt = c->vi.size;
++	c->leb_size = c->vi.usable_leb_size;
++	c->half_leb_size = c->leb_size / 2;
++	c->min_io_size = c->di.min_io_size;
++	c->min_io_shift = fls(c->min_io_size) - 1;
++
++	if (c->leb_size < UBIFS_MIN_LEB_SZ) {
++		ubifs_err("too small LEBs (%d bytes), min. is %d bytes",
++			  c->leb_size, UBIFS_MIN_LEB_SZ);
++		return -EINVAL;
++	}
++
++	if (c->leb_cnt < UBIFS_MIN_LEB_CNT) {
++		ubifs_err("too few LEBs (%d), min. is %d",
++			  c->leb_cnt, UBIFS_MIN_LEB_CNT);
++		return -EINVAL;
++	}
++
++	if (!is_power_of_2(c->min_io_size)) {
++		ubifs_err("bad min. I/O size %d", c->min_io_size);
++		return -EINVAL;
++	}
++
++	/*
++	 * UBIFS aligns all node to 8-byte boundary, so to make function in
++	 * io.c simpler, assume minimum I/O unit size to be 8 bytes if it is
++	 * less than 8.
++	 */
++	if (c->min_io_size < 8) {
++		c->min_io_size = 8;
++		c->min_io_shift = 3;
++	}
++
++	c->ref_node_alsz = ALIGN(UBIFS_REF_NODE_SZ, c->min_io_size);
++	c->mst_node_alsz = ALIGN(UBIFS_MST_NODE_SZ, c->min_io_size);
++
++	/*
++	 * Initialize node length ranges which are mostly needed for node
++	 * length validation.
++	 */
++	c->ranges[UBIFS_PAD_NODE].len  = UBIFS_PAD_NODE_SZ;
++	c->ranges[UBIFS_SB_NODE].len   = UBIFS_SB_NODE_SZ;
++	c->ranges[UBIFS_MST_NODE].len  = UBIFS_MST_NODE_SZ;
++	c->ranges[UBIFS_REF_NODE].len  = UBIFS_REF_NODE_SZ;
++	c->ranges[UBIFS_TRUN_NODE].len = UBIFS_TRUN_NODE_SZ;
++	c->ranges[UBIFS_CS_NODE].len   = UBIFS_CS_NODE_SZ;
++
++	c->ranges[UBIFS_INO_NODE].min_len  = UBIFS_INO_NODE_SZ;
++	c->ranges[UBIFS_INO_NODE].max_len  = UBIFS_MAX_INO_NODE_SZ;
++	c->ranges[UBIFS_ORPH_NODE].min_len =
++				UBIFS_ORPH_NODE_SZ + sizeof(__le64);
++	c->ranges[UBIFS_ORPH_NODE].max_len = c->leb_size;
++	c->ranges[UBIFS_DENT_NODE].min_len = UBIFS_DENT_NODE_SZ;
++	c->ranges[UBIFS_DENT_NODE].max_len = UBIFS_MAX_DENT_NODE_SZ;
++	c->ranges[UBIFS_XENT_NODE].min_len = UBIFS_XENT_NODE_SZ;
++	c->ranges[UBIFS_XENT_NODE].max_len = UBIFS_MAX_XENT_NODE_SZ;
++	c->ranges[UBIFS_DATA_NODE].min_len = UBIFS_DATA_NODE_SZ;
++	c->ranges[UBIFS_DATA_NODE].max_len = UBIFS_MAX_DATA_NODE_SZ;
++	/*
++	 * Minimum indexing node size is amended later when superblock is
++	 * read and the key length is known.
++	 */
++	c->ranges[UBIFS_IDX_NODE].min_len = UBIFS_IDX_NODE_SZ + UBIFS_BRANCH_SZ;
++	/*
++	 * Maximum indexing node size is amended later when superblock is
++	 * read and the fanout is known.
++	 */
++	c->ranges[UBIFS_IDX_NODE].max_len = INT_MAX;
++
++	/*
++	 * Initialize dead and dark LEB space watermarks.
++	 *
++	 * Dead space is the space which cannot be used. Its watermark is
++	 * equivalent to min. I/O unit or minimum node size if it is greater
++	 * then min. I/O unit.
++	 *
++	 * Dark space is the space which might be used, or might not, depending
++	 * on which node should be written to the LEB. Its watermark is
++	 * equivalent to maximum UBIFS node size.
++	 */
++	c->dead_wm = ALIGN(MIN_WRITE_SZ, c->min_io_size);
++	c->dark_wm = ALIGN(UBIFS_MAX_NODE_SZ, c->min_io_size);
++
++	return 0;
++}
++
++/**
++ * bud_wbuf_callback - bud LEB write-buffer synchronization call-back.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB the write-buffer was synchronized to
++ * @free: how many free bytes left in this LEB
++ * @pad: how many bytes were padded
++ *
++ * This is a callback function which is called by the I/O unit when the
++ * write-buffer is synchronized. We need this to correctly maintain space
++ * accounting in bud logical eraseblocks. This function returns zero in case of
++ * success and a negative error code in case of failure.
++ *
++ * This function actually belongs to the journal, but we keep it here because
++ * we want to keep it static.
++ */
++static int bud_wbuf_callback(struct ubifs_info *c, int lnum, int free, int pad)
++{
++	return ubifs_update_one_lp(c, lnum, free, pad, 0, 0);
++}
++
++/*
++ * init_constants_late - initialize UBIFS constants.
++ * @c: UBIFS file-system description object
++ *
++ * This is a helper function which initializes various UBIFS constants after
++ * the superblock has been read. It also checks various UBIFS parameters and
++ * makes sure they are all right. Returns zero in case of success and a
++ * negative error code in case of failure.
++ */
++static int init_constants_late(struct ubifs_info *c)
++{
++	int tmp, err;
++	uint64_t tmp64;
++
++	c->main_bytes = c->main_lebs * c->leb_size;
++
++	c->max_znode_sz = sizeof(struct ubifs_znode) +
++				c->fanout * sizeof(struct ubifs_zbranch);
++
++	tmp = ubifs_idx_node_sz(c, 1);
++	c->ranges[UBIFS_IDX_NODE].min_len = tmp;
++	c->min_idx_node_sz = ALIGN(tmp, 8);
++
++	tmp = ubifs_idx_node_sz(c, c->fanout);
++	c->ranges[UBIFS_IDX_NODE].max_len = tmp;
++	c->max_idx_node_sz = ALIGN(tmp, 8);
++
++	/* Make sure LEB size is large enough to fit full commit */
++	tmp = UBIFS_CS_NODE_SZ + UBIFS_REF_NODE_SZ * c->jhead_cnt;
++	tmp = ALIGN(tmp, c->min_io_size);
++	if (tmp > c->leb_size) {
++		dbg_err("too small LEB size %d, at least %d needed",
++			c->leb_size, tmp);
++		return -EINVAL;
++	}
++
++	/*
++	 * Make sure that the log is large enough to fit reference nodes for
++	 * all buds plus one reserved LEB.
++	 */
++	tmp64 = c->max_bud_bytes;
++	tmp = do_div(tmp64, c->leb_size);
++	c->max_bud_cnt = tmp64 + !!tmp;
++	tmp = (c->ref_node_alsz * c->max_bud_cnt + c->leb_size - 1);
++	tmp /= c->leb_size;
++	tmp += 1;
++	if (c->log_lebs < tmp) {
++		dbg_err("too small log %d LEBs, required min. %d LEBs",
++			c->log_lebs, tmp);
++		return -EINVAL;
++	}
++
++	/*
++	 * When budgeting we assume worst-case scenarios when the pages are not
++	 * be compressed and direntries are of the maximum size.
++	 *
++	 * Note, data, which may be stored in inodes is budgeted separately, so
++	 * it is not included into 'c->inode_budget'.
++	 */
++	c->page_budget = UBIFS_MAX_DATA_NODE_SZ * UBIFS_BLOCKS_PER_PAGE;
++	c->inode_budget = UBIFS_INO_NODE_SZ;
++	c->dent_budget = UBIFS_MAX_DENT_NODE_SZ;
++
++	/*
++	 * When the amount of flash space used by buds becomes
++	 * 'c->max_bud_bytes', UBIFS just blocks all writers and starts commit.
++	 * The writers are unblocked when the commit is finished. To avoid
++	 * writers to be blocked UBIFS initiates background commit in advance,
++	 * when number of bud bytes becomes above the limit defined below.
++	 */
++	c->bg_bud_bytes = (c->max_bud_bytes * 13) >> 4;
++
++	/*
++	 * Ensure minimum journal size. All the bytes in the journal heads are
++	 * considered to be used, when calculating the current journal usage.
++	 * Consequently, if the journal is too small, UBIFS will treat it as
++	 * always full.
++	 */
++	tmp64 = (uint64_t)(c->jhead_cnt + 1) * c->leb_size + 1;
++	if (c->bg_bud_bytes < tmp64)
++		c->bg_bud_bytes = tmp64;
++	if (c->max_bud_bytes < tmp64 + c->leb_size)
++		c->max_bud_bytes = tmp64 + c->leb_size;
++
++	err = ubifs_calc_lpt_geom(c);
++	if (err)
++		return err;
++
++	c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
++
++	/*
++	 * Calculate total amount of FS blocks. This number is not used
++	 * internally because it does not make much sense for UBIFS, but it is
++	 * necessary to report something for the 'statfs()' call.
++	 *
++	 * Subtract the LEB reserved for GC and the LEB which is reserved for
++	 * deletions.
++	 *
++	 * Review 'ubifs_calc_available()' if changing this calculation.
++	 */
++	tmp64 = c->main_lebs - 2;
++	tmp64 *= c->leb_size - c->dark_wm;
++	tmp64 = ubifs_reported_space(c, tmp64);
++	c->block_cnt = tmp64 >> UBIFS_BLOCK_SHIFT;
++
++	return 0;
++}
++
++/**
++ * take_gc_lnum - reserve GC LEB.
++ * @c: UBIFS file-system description object
++ *
++ * This function ensures that the LEB reserved for garbage collection is
++ * unmapped and is marked as "taken" in lprops. We also have to set free space
++ * to LEB size and dirty space to zero, because lprops may contain out-of-date
++ * information if the file-system was un-mounted before it has been committed.
++ * This function returns zero in case of success and a negative error code in
++ * case of failure.
++ */
++static int take_gc_lnum(struct ubifs_info *c)
++{
++	int err;
++
++	if (c->gc_lnum == -1) {
++		ubifs_err("no LEB for GC");
++		return -EINVAL;
++	}
++
++	err = ubifs_leb_unmap(c, c->gc_lnum);
++	if (err)
++		return err;
++
++	/* And we have to tell lprops that this LEB is taken */
++	err = ubifs_change_one_lp(c, c->gc_lnum, c->leb_size, 0,
++				  LPROPS_TAKEN, 0, 0);
++	return err;
++}
++
++/**
++ * alloc_wbufs - allocate write-buffers.
++ * @c: UBIFS file-system description object
++ *
++ * This helper function allocates and initializes UBIFS write-buffers. Returns
++ * zero in case of success and %-ENOMEM in case of failure.
++ */
++static int alloc_wbufs(struct ubifs_info *c)
++{
++	int i, err;
++
++	c->jheads = kzalloc(c->jhead_cnt * sizeof(struct ubifs_jhead),
++			   GFP_KERNEL);
++	if (!c->jheads)
++		return -ENOMEM;
++
++	/* Initialize journal heads */
++	for (i = 0; i < c->jhead_cnt; i++) {
++		INIT_LIST_HEAD(&c->jheads[i].buds_list);
++		err = ubifs_wbuf_init(c, &c->jheads[i].wbuf);
++		if (err)
++			return err;
++
++		c->jheads[i].wbuf.sync_callback = &bud_wbuf_callback;
++		c->jheads[i].wbuf.jhead = i;
++	}
++
++	c->jheads[BASEHD].wbuf.dtype = UBI_SHORTTERM;
++	/*
++	 * Garbage Collector head likely contains long-term data and
++	 * does not need to be synchronized by timer.
++	 */
++	c->jheads[GCHD].wbuf.dtype = UBI_LONGTERM;
++	c->jheads[GCHD].wbuf.timeout = 0;
++
++	return 0;
++}
++
++/**
++ * free_wbufs - free write-buffers.
++ * @c: UBIFS file-system description object
++ */
++static void free_wbufs(struct ubifs_info *c)
++{
++	int i;
++
++	if (c->jheads) {
++		for (i = 0; i < c->jhead_cnt; i++) {
++			kfree(c->jheads[i].wbuf.buf);
++			kfree(c->jheads[i].wbuf.inodes);
++		}
++		kfree(c->jheads);
++		c->jheads = NULL;
++	}
++}
++
++/**
++ * free_orphans - free orphans.
++ * @c: UBIFS file-system description object
++ */
++static void free_orphans(struct ubifs_info *c)
++{
++	struct ubifs_orphan *orph;
++
++	while (c->orph_dnext) {
++		orph = c->orph_dnext;
++		c->orph_dnext = orph->dnext;
++		list_del(&orph->list);
++		kfree(orph);
++	}
++
++	while (!list_empty(&c->orph_list)) {
++		orph = list_entry(c->orph_list.next, struct ubifs_orphan, list);
++		list_del(&orph->list);
++		kfree(orph);
++		dbg_err("orphan list not empty at unmount");
++	}
++
++	vfree(c->orph_buf);
++	c->orph_buf = NULL;
++}
++
++/**
++ * free_buds - free per-bud objects.
++ * @c: UBIFS file-system description object
++ */
++static void free_buds(struct ubifs_info *c)
++{
++	struct rb_node *this = c->buds.rb_node;
++	struct ubifs_bud *bud;
++
++	while (this) {
++		if (this->rb_left)
++			this = this->rb_left;
++		else if (this->rb_right)
++			this = this->rb_right;
++		else {
++			bud = rb_entry(this, struct ubifs_bud, rb);
++			this = rb_parent(this);
++			if (this) {
++				if (this->rb_left == &bud->rb)
++					this->rb_left = NULL;
++				else
++					this->rb_right = NULL;
++			}
++			kfree(bud);
++		}
++	}
++}
++
++/**
++ * check_volume_empty - check if the UBI volume is empty.
++ * @c: UBIFS file-system description object
++ *
++ * This function checks if the UBIFS volume is empty by looking if its LEBs are
++ * mapped or not. The result of checking is stored in the @c->empty variable.
++ * Returns zero in case of success and a negative error code in case of
++ * failure.
++ */
++static int check_volume_empty(struct ubifs_info *c)
++{
++	int lnum, err;
++
++	c->empty = 1;
++	for (lnum = 0; lnum < c->leb_cnt; lnum++) {
++		err = ubi_is_mapped(c->ubi, lnum);
++		if (unlikely(err < 0))
++			return err;
++		if (err == 1) {
++			c->empty = 0;
++			break;
++		}
++
++		cond_resched();
++	}
++
++	return 0;
++}
++
++/*
++ * UBIFS mount options.
++ *
++ * Opt_fast_unmount: do not run a journal commit before un-mounting
++ * Opt_norm_unmount: run a journal commit before un-mounting
++ * Opt_err: just end of array marker
++ */
++enum {
++	Opt_fast_unmount,
++	Opt_norm_unmount,
++	Opt_err,
++};
++
++static match_table_t tokens = {
++	{Opt_fast_unmount, "fast_unmount"},
++	{Opt_norm_unmount, "norm_unmount"},
++	{Opt_err, NULL},
++};
++
++/**
++ * ubifs_parse_options - parse mount parameters.
++ * @c: UBIFS file-system description object
++ * @options: parameters to parse
++ * @is_remount: non-zero if this is FS re-mount
++ *
++ * This function parses UBIFS mount options and returns zero in case success
++ * and a negative error code in case of failure.
++ */
++static int ubifs_parse_options(struct ubifs_info *c, char *options,
++			       int is_remount)
++{
++	char *p;
++	substring_t args[MAX_OPT_ARGS];
++
++	if (!options)
++		return 0;
++
++	while ((p = strsep(&options, ","))) {
++		int token;
++
++		if (!*p)
++			continue;
++
++		token = match_token(p, tokens, args);
++		switch (token) {
++		case Opt_fast_unmount:
++			c->mount_opts.unmount_mode = 2;
++			c->fast_unmount = 1;
++			break;
++		case Opt_norm_unmount:
++			c->mount_opts.unmount_mode = 1;
++			c->fast_unmount = 0;
++			break;
++		default:
++			ubifs_err("unrecognized mount option \"%s\" "
++				  "or missing value", p);
++			return -EINVAL;
++		}
++	}
++
++	return 0;
++}
++
++/**
++ * destroy_journal - destroy journal data structures.
++ * @c: UBIFS file-system description object
++ *
++ * This function destroys journal data structures including those that may have
++ * been created by recovery functions.
++ */
++static void destroy_journal(struct ubifs_info *c)
++{
++	while (!list_empty(&c->unclean_leb_list)) {
++		struct ubifs_unclean_leb *ucleb;
++
++		ucleb = list_entry(c->unclean_leb_list.next,
++				   struct ubifs_unclean_leb, list);
++		list_del(&ucleb->list);
++		kfree(ucleb);
++	}
++	while (!list_empty(&c->old_buds)) {
++		struct ubifs_bud *bud;
++
++		bud = list_entry(c->old_buds.next, struct ubifs_bud, list);
++		list_del(&bud->list);
++		kfree(bud);
++	}
++	ubifs_destroy_idx_gc(c);
++	ubifs_destroy_size_tree(c);
++	ubifs_tnc_close(c);
++	free_buds(c);
++}
++
++/**
++ * mount_ubifs - mount UBIFS file-system.
++ * @c: UBIFS file-system description object
++ *
++ * This function mounts UBIFS file system. Returns zero in case of success and
++ * a negative error code in case of failure.
++ *
++ * Note, the function does not de-allocate resources it it fails half way
++ * through, and the caller has to do this instead.
++ */
++static int mount_ubifs(struct ubifs_info *c)
++{
++	struct super_block *sb = c->vfs_sb;
++	int err, mounted_read_only = (sb->s_flags & MS_RDONLY);
++	unsigned long long x;
++	size_t sz;
++
++	err = init_constants_early(c);
++	if (err)
++		return err;
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++	c->dbg_buf = vmalloc(c->leb_size);
++	if (!c->dbg_buf)
++		return -ENOMEM;
++#endif
++
++	err = check_volume_empty(c);
++	if (err)
++		goto out_free;
++
++	if (c->empty && (mounted_read_only || c->ro_media)) {
++		/*
++		 * This UBI volume is empty, and read-only, or the file system
++		 * is mounted read-only - we cannot format it.
++		 */
++		ubifs_err("can't format empty UBI volume: read-only %s",
++			  c->ro_media ? "UBI volume" : "mount");
++		err = -EROFS;
++		goto out_free;
++	}
++
++	if (c->ro_media && !mounted_read_only) {
++		ubifs_err("cannot mount read-write - read-only media");
++		err = -EROFS;
++		goto out_free;
++	}
++
++	/*
++	 * The requirement for the buffer is that it should fit indexing B-tree
++	 * height amount of integers. We assume the height if the TNC tree will
++	 * never exceed 64.
++	 */
++	err = -ENOMEM;
++	c->bottom_up_buf = kmalloc(BOTTOM_UP_HEIGHT * sizeof(int), GFP_KERNEL);
++	if (!c->bottom_up_buf)
++		goto out_free;
++
++	c->sbuf = vmalloc(c->leb_size);
++	if (!c->sbuf)
++		goto out_free;
++
++	if (!mounted_read_only) {
++		c->ileb_buf = vmalloc(c->leb_size);
++		if (!c->ileb_buf)
++			goto out_free;
++	}
++
++	err = ubifs_read_superblock(c);
++	if (err)
++		goto out_free;
++
++	/*
++	 * Make sure the compressor which is set as the default on in the
++	 * superblock was actually compiled in.
++	 */
++	if (!ubifs_compr_present(c->default_compr)) {
++		ubifs_warn("'%s' compressor is set by superblock, but not "
++			   "compiled in", ubifs_compr_name(c->default_compr));
++		c->default_compr = UBIFS_COMPR_NONE;
++	}
++
++	dbg_failure_mode_registration(c);
++
++	err = init_constants_late(c);
++	if (err)
++		goto out_dereg;
++
++	sz = ALIGN(c->max_idx_node_sz, c->min_io_size);
++	sz = ALIGN(sz + c->max_idx_node_sz, c->min_io_size);
++	c->cbuf = kmalloc(sz, GFP_NOFS);
++	if (!c->cbuf) {
++		err = -ENOMEM;
++		goto out_dereg;
++	}
++
++	if (!mounted_read_only) {
++		err = alloc_wbufs(c);
++		if (err)
++			goto out_cbuf;
++
++		/* Create background thread */
++		sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num,
++			c->vi.vol_id);
++		c->bgt = kthread_create(ubifs_bg_thread, c, c->bgt_name);
++		if (!c->bgt)
++			c->bgt = ERR_PTR(-EINVAL);
++		if (IS_ERR(c->bgt)) {
++			err = PTR_ERR(c->bgt);
++			c->bgt = NULL;
++			ubifs_err("cannot spawn \"%s\", error %d",
++				  c->bgt_name, err);
++			goto out_wbufs;
++		}
++		wake_up_process(c->bgt);
++	}
++
++	err = ubifs_read_master(c);
++	if (err)
++		goto out_stop;
++
++	if ((c->mst_node->flags & cpu_to_le32(UBIFS_MST_DIRTY)) != 0) {
++		ubifs_msg("recovery needed");
++		c->need_recovery = 1;
++		if (!mounted_read_only) {
++			err = ubifs_recover_inl_heads(c, c->sbuf);
++			if (err)
++				goto out_master;
++		}
++	} else if (!mounted_read_only) {
++		/*
++		 * Set the "dirty" flag so that if we reboot uncleanly we
++		 * will notice this immediately on the next mount.
++		 */
++		c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
++		err = ubifs_write_master(c);
++		if (err)
++			goto out_master;
++	}
++
++	err = ubifs_lpt_init(c, 1, !mounted_read_only);
++	if (err)
++		goto out_lpt;
++
++	err = dbg_check_idx_size(c, c->old_idx_sz);
++	if (err)
++		goto out_lpt;
++
++	err = ubifs_replay_journal(c);
++	if (err)
++		goto out_journal;
++
++	err = ubifs_mount_orphans(c, c->need_recovery, mounted_read_only);
++	if (err)
++		goto out_orphans;
++
++	if (!mounted_read_only) {
++		int lnum;
++
++		/* Check for enough free space */
++		if (ubifs_calc_available(c) <= 0) {
++			ubifs_err("insufficient available space");
++			err = -EINVAL;
++			goto out_orphans;
++		}
++
++		/* Check for enough log space */
++		lnum = c->lhead_lnum + 1;
++		if (lnum >= UBIFS_LOG_LNUM + c->log_lebs)
++			lnum = UBIFS_LOG_LNUM;
++		if (lnum == c->ltail_lnum) {
++			err = ubifs_consolidate_log(c);
++			if (err)
++				goto out_orphans;
++		}
++
++		if (c->need_recovery) {
++			err = ubifs_recover_size(c);
++			if (err)
++				goto out_orphans;
++			err = ubifs_rcvry_gc_commit(c);
++		} else
++			err = take_gc_lnum(c);
++		if (err)
++			goto out_orphans;
++
++		err = dbg_check_lprops(c);
++		if (err)
++			goto out_orphans;
++	} else if (c->need_recovery) {
++		err = ubifs_recover_size(c);
++		if (err)
++			goto out_orphans;
++	}
++
++	spin_lock(&ubifs_infos_lock);
++	list_add_tail(&c->infos_list, &ubifs_infos);
++	spin_unlock(&ubifs_infos_lock);
++
++	if (c->need_recovery) {
++		if (mounted_read_only)
++			ubifs_msg("recovery deferred");
++		else {
++			c->need_recovery = 0;
++			ubifs_msg("recovery completed");
++		}
++	}
++
++	err = dbg_check_filesystem(c);
++	if (err)
++		goto out_infos;
++
++	ubifs_msg("mounted UBI device %d, volume %d", c->vi.ubi_num,
++		  c->vi.vol_id);
++	if (mounted_read_only)
++		ubifs_msg("mounted read-only");
++	ubifs_msg("minimal I/O unit size:   %d bytes", c->min_io_size);
++	ubifs_msg("logical eraseblock size: %d bytes (%d KiB)",
++		  c->leb_size, c->leb_size / 1024);
++	x = (unsigned long long)c->main_lebs * c->leb_size;
++	ubifs_msg("file system size:        %lld bytes (%lld KiB, %lld MiB, "
++		  "%d LEBs)", x, x >> 10, x >> 20, c->main_lebs);
++	x = (unsigned long long)c->log_lebs * c->leb_size + c->max_bud_bytes;
++	ubifs_msg("journal size:            %lld bytes (%lld KiB, %lld MiB, "
++		  "%d LEBs)", x, x >> 10, x >> 20,
++		  c->log_lebs + c->max_bud_cnt);
++	ubifs_msg("data journal heads:      %d",
++		  c->jhead_cnt - NONDATA_JHEADS_CNT);
++	ubifs_msg("default compressor:      %s",
++		  ubifs_compr_name(c->default_compr));
++	ubifs_msg("media format %d, latest format %d",
++		  c->fmt_version, UBIFS_FORMAT_VERSION);
++
++	dbg_msg("compiled on:            " __DATE__ " at " __TIME__);
++	dbg_msg("UUID:                   %02X%02X%02X%02X-%02X%02X"
++	       "-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
++	       c->uuid[0], c->uuid[1], c->uuid[2], c->uuid[3],
++	       c->uuid[4], c->uuid[5], c->uuid[6], c->uuid[7],
++	       c->uuid[8], c->uuid[9], c->uuid[10], c->uuid[11],
++	       c->uuid[12], c->uuid[13], c->uuid[14], c->uuid[15]);
++	dbg_msg("fast unmount:           %d", c->fast_unmount);
++	dbg_msg("big_lpt                 %d", c->big_lpt);
++	dbg_msg("log LEBs:               %d (%d - %d)",
++		c->log_lebs, UBIFS_LOG_LNUM, c->log_last);
++	dbg_msg("LPT area LEBs:          %d (%d - %d)",
++		c->lpt_lebs, c->lpt_first, c->lpt_last);
++	dbg_msg("orphan area LEBs:       %d (%d - %d)",
++		c->orph_lebs, c->orph_first, c->orph_last);
++	dbg_msg("main area LEBs:         %d (%d - %d)",
++		c->main_lebs, c->main_first, c->leb_cnt - 1);
++	dbg_msg("index LEBs:             %d", c->lst.idx_lebs);
++	dbg_msg("total index bytes:      %lld (%lld KiB, %lld MiB)",
++		c->old_idx_sz, c->old_idx_sz >> 10, c->old_idx_sz >> 20);
++	dbg_msg("key hash type:          %d", c->key_hash_type);
++	dbg_msg("tree fanout:            %d", c->fanout);
++	dbg_msg("reserved GC LEB:        %d", c->gc_lnum);
++	dbg_msg("first main LEB:         %d", c->main_first);
++	dbg_msg("dead watermark:         %d", c->dead_wm);
++	dbg_msg("dark watermark:         %d", c->dark_wm);
++	x = c->main_lebs * c->dark_wm;
++	dbg_msg("max. dark space:        %lld (%lld KiB, %lld MiB)",
++		x, x >> 10, x >> 20);
++	dbg_msg("maximum bud bytes:      %lld (%lld KiB, %lld MiB)",
++		c->max_bud_bytes, c->max_bud_bytes >> 10,
++		c->max_bud_bytes >> 20);
++	dbg_msg("BG commit bud bytes:    %lld (%lld KiB, %lld MiB)",
++		c->bg_bud_bytes, c->bg_bud_bytes >> 10,
++		c->bg_bud_bytes >> 20);
++	dbg_msg("current bud bytes       %lld (%lld KiB, %lld MiB)",
++		c->bud_bytes, c->bud_bytes >> 10, c->bud_bytes >> 20);
++	dbg_msg("max. seq. number:       %llu", c->max_sqnum);
++	dbg_msg("commit number:          %llu", c->cmt_no);
++
++	return 0;
++
++out_infos:
++	spin_lock(&ubifs_infos_lock);
++	list_del(&c->infos_list);
++	spin_unlock(&ubifs_infos_lock);
++out_orphans:
++	free_orphans(c);
++out_journal:
++	destroy_journal(c);
++out_lpt:
++	ubifs_lpt_free(c, 0);
++out_master:
++	kfree(c->mst_node);
++	kfree(c->rcvrd_mst_node);
++out_stop:
++	if (c->bgt)
++		kthread_stop(c->bgt);
++out_wbufs:
++	free_wbufs(c);
++out_cbuf:
++	kfree(c->cbuf);
++out_dereg:
++	dbg_failure_mode_deregistration(c);
++out_free:
++	vfree(c->ileb_buf);
++	vfree(c->sbuf);
++	kfree(c->bottom_up_buf);
++	UBIFS_DBG(vfree(c->dbg_buf));
++	return err;
++}
++
++/**
++ * ubifs_umount - un-mount UBIFS file-system.
++ * @c: UBIFS file-system description object
++ *
++ * Note, this function is called to free allocated resourced when un-mounting,
++ * as well as free resources when an error occurred while we were half way
++ * through mounting (error path cleanup function). So it has to make sure the
++ * resource was actually allocated before freeing it.
++ */
++static void ubifs_umount(struct ubifs_info *c)
++{
++	dbg_gen("un-mounting UBI device %d, volume %d", c->vi.ubi_num,
++		c->vi.vol_id);
++
++	spin_lock(&ubifs_infos_lock);
++	list_del(&c->infos_list);
++	spin_unlock(&ubifs_infos_lock);
++
++	if (c->bgt)
++		kthread_stop(c->bgt);
++
++	destroy_journal(c);
++	free_wbufs(c);
++	free_orphans(c);
++	ubifs_lpt_free(c, 0);
++
++	kfree(c->cbuf);
++	kfree(c->rcvrd_mst_node);
++	kfree(c->mst_node);
++	vfree(c->sbuf);
++	kfree(c->bottom_up_buf);
++	UBIFS_DBG(vfree(c->dbg_buf));
++	vfree(c->ileb_buf);
++	dbg_failure_mode_deregistration(c);
++}
++
++/**
++ * ubifs_remount_rw - re-mount in read-write mode.
++ * @c: UBIFS file-system description object
++ *
++ * UBIFS avoids allocating many unnecessary resources when mounted in read-only
++ * mode. This function allocates the needed resources and re-mounts UBIFS in
++ * read-write mode.
++ */
++static int ubifs_remount_rw(struct ubifs_info *c)
++{
++	int err, lnum;
++
++	if (c->ro_media)
++		return -EINVAL;
++
++	mutex_lock(&c->umount_mutex);
++	c->remounting_rw = 1;
++
++	/* Check for enough free space */
++	if (ubifs_calc_available(c) <= 0) {
++		ubifs_err("insufficient available space");
++		err = -EINVAL;
++		goto out;
++	}
++
++	if (c->old_leb_cnt != c->leb_cnt) {
++		struct ubifs_sb_node *sup;
++
++		sup = ubifs_read_sb_node(c);
++		if (IS_ERR(sup)) {
++			err = PTR_ERR(sup);
++			goto out;
++		}
++		sup->leb_cnt = cpu_to_le32(c->leb_cnt);
++		err = ubifs_write_sb_node(c, sup);
++		if (err)
++			goto out;
++	}
++
++	if (c->need_recovery) {
++		ubifs_msg("completing deferred recovery");
++		err = ubifs_write_rcvrd_mst_node(c);
++		if (err)
++			goto out;
++		err = ubifs_recover_size(c);
++		if (err)
++			goto out;
++		err = ubifs_clean_lebs(c, c->sbuf);
++		if (err)
++			goto out;
++		err = ubifs_recover_inl_heads(c, c->sbuf);
++		if (err)
++			goto out;
++	}
++
++	if (!(c->mst_node->flags & cpu_to_le32(UBIFS_MST_DIRTY))) {
++		c->mst_node->flags |= cpu_to_le32(UBIFS_MST_DIRTY);
++		err = ubifs_write_master(c);
++		if (err)
++			goto out;
++	}
++
++	c->ileb_buf = vmalloc(c->leb_size);
++	if (!c->ileb_buf) {
++		err = -ENOMEM;
++		goto out;
++	}
++
++	err = ubifs_lpt_init(c, 0, 1);
++	if (err)
++		goto out;
++
++	err = alloc_wbufs(c);
++	if (err)
++		goto out;
++
++	ubifs_create_buds_lists(c);
++
++	/* Create background thread */
++	c->bgt = kthread_create(ubifs_bg_thread, c, c->bgt_name);
++	if (!c->bgt)
++		c->bgt = ERR_PTR(-EINVAL);
++	if (IS_ERR(c->bgt)) {
++		err = PTR_ERR(c->bgt);
++		c->bgt = NULL;
++		ubifs_err("cannot spawn \"%s\", error %d",
++			  c->bgt_name, err);
++		return err;
++	}
++	wake_up_process(c->bgt);
++
++	c->orph_buf = vmalloc(c->leb_size);
++	if (!c->orph_buf)
++		return -ENOMEM;
++
++	/* Check for enough log space */
++	lnum = c->lhead_lnum + 1;
++	if (lnum >= UBIFS_LOG_LNUM + c->log_lebs)
++		lnum = UBIFS_LOG_LNUM;
++	if (lnum == c->ltail_lnum) {
++		err = ubifs_consolidate_log(c);
++		if (err)
++			goto out;
++	}
++
++	if (c->need_recovery)
++		err = ubifs_rcvry_gc_commit(c);
++	else
++		err = take_gc_lnum(c);
++	if (err)
++		goto out;
++
++	if (c->need_recovery) {
++		c->need_recovery = 0;
++		ubifs_msg("deferred recovery completed");
++	}
++
++	dbg_gen("re-mounted read-write");
++	c->vfs_sb->s_flags &= ~MS_RDONLY;
++	c->remounting_rw = 0;
++	mutex_unlock(&c->umount_mutex);
++	return 0;
++
++out:
++	vfree(c->orph_buf);
++	c->orph_buf = NULL;
++	if (c->bgt) {
++		kthread_stop(c->bgt);
++		c->bgt = NULL;
++	}
++	free_wbufs(c);
++	vfree(c->ileb_buf);
++	c->ileb_buf = NULL;
++	ubifs_lpt_free(c, 1);
++	c->remounting_rw = 0;
++	mutex_unlock(&c->umount_mutex);
++	return err;
++}
++
++/**
++ * commit_on_unmount - commit the journal when un-mounting.
++ * @c: UBIFS file-system description object
++ *
++ * This function is called during un-mounting and it commits the journal unless
++ * the "fast unmount" mode is enabled. It also avoids committing the journal if
++ * it contains too few data.
++ *
++ * Sometimes recovery requires the journal to be committed at least once, and
++ * this function takes care about this.
++ */
++static void commit_on_unmount(struct ubifs_info *c)
++{
++	if (!c->fast_unmount) {
++		long long bud_bytes;
++
++		spin_lock(&c->buds_lock);
++		bud_bytes = c->bud_bytes;
++		spin_unlock(&c->buds_lock);
++		if (bud_bytes > c->leb_size)
++			ubifs_run_commit(c);
++	}
++}
++
++/**
++ * ubifs_remount_ro - re-mount in read-only mode.
++ * @c: UBIFS file-system description object
++ *
++ * We rely on VFS to have stopped writing. Possibly the background thread could
++ * be running a commit, however kthread_stop will wait in that case.
++ */
++static void ubifs_remount_ro(struct ubifs_info *c)
++{
++	int i, err;
++
++	ubifs_assert(!c->need_recovery);
++	commit_on_unmount(c);
++
++	mutex_lock(&c->umount_mutex);
++	if (c->bgt) {
++		kthread_stop(c->bgt);
++		c->bgt = NULL;
++	}
++
++	for (i = 0; i < c->jhead_cnt; i++) {
++		ubifs_wbuf_sync(&c->jheads[i].wbuf);
++		del_timer_sync(&c->jheads[i].wbuf.timer);
++	}
++
++	if (!c->ro_media) {
++		c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY);
++		c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS);
++		c->mst_node->gc_lnum = cpu_to_le32(c->gc_lnum);
++		err = ubifs_write_master(c);
++		if (err)
++			ubifs_ro_mode(c, err);
++	}
++
++	ubifs_destroy_idx_gc(c);
++	free_wbufs(c);
++	vfree(c->orph_buf);
++	c->orph_buf = NULL;
++	vfree(c->ileb_buf);
++	c->ileb_buf = NULL;
++	ubifs_lpt_free(c, 1);
++	mutex_unlock(&c->umount_mutex);
++}
++
++static void ubifs_put_super(struct super_block *sb)
++{
++	int i;
++	struct ubifs_info *c = sb->s_fs_info;
++
++	ubifs_msg("un-mount UBI device %d, volume %d", c->vi.ubi_num,
++		  c->vi.vol_id);
++	/*
++	 * The following asserts are only valid if there has not been a failure
++	 * of the media. For example, there will be dirty inodes if we failed
++	 * to write them back because of I/O errors.
++	 */
++	ubifs_assert(atomic_long_read(&c->dirty_pg_cnt) == 0);
++	ubifs_assert(atomic_long_read(&c->dirty_ino_cnt) == 0);
++	ubifs_assert(c->budg_idx_growth == 0);
++	ubifs_assert(c->budg_data_growth == 0);
++
++	/*
++	 * The 'c->umount_lock' prevents races between UBIFS memory shrinker
++	 * and file system un-mount. Namely, it prevents the shrinker from
++	 * picking this superblock for shrinking - it will be just skipped if
++	 * the mutex is locked.
++	 */
++	mutex_lock(&c->umount_mutex);
++	if (!(c->vfs_sb->s_flags & MS_RDONLY)) {
++		/*
++		 * First of all kill the background thread to make sure it does
++		 * not interfere with un-mounting and freeing resources.
++		 */
++		if (c->bgt) {
++			kthread_stop(c->bgt);
++			c->bgt = NULL;
++		}
++
++		/* Synchronize write-buffers */
++		if (c->jheads)
++			for (i = 0; i < c->jhead_cnt; i++) {
++				ubifs_wbuf_sync(&c->jheads[i].wbuf);
++				del_timer_sync(&c->jheads[i].wbuf.timer);
++			}
++
++		/*
++		 * On fatal errors c->ro_media is set to 1, in which case we do
++		 * not write the master node.
++		 */
++		if (!c->ro_media) {
++			/*
++			 * We are being cleanly unmounted which means the
++			 * orphans were killed - indicate this in the master
++			 * node. Also save the reserved GC LEB number.
++			 */
++			int err;
++
++			c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY);
++			c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS);
++			c->mst_node->gc_lnum = cpu_to_le32(c->gc_lnum);
++			err = ubifs_write_master(c);
++			if (err)
++				/*
++				 * Recovery will attempt to fix the master area
++				 * next mount, so we just print a message and
++				 * continue to unmount normally.
++				 */
++				ubifs_err("failed to write master node, "
++					  "error %d", err);
++		}
++	}
++
++	ubifs_umount(c);
++	ubi_close_volume(c->ubi);
++	mutex_unlock(&c->umount_mutex);
++	kfree(c);
++}
++
++static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data)
++{
++	int err;
++	struct ubifs_info *c = sb->s_fs_info;
++
++	dbg_gen("old flags %#lx, new flags %#x", sb->s_flags, *flags);
++
++	err = ubifs_parse_options(c, data, 1);
++	if (err) {
++		ubifs_err("invalid or unknown remount parameter");
++		return err;
++	}
++	if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
++		err = ubifs_remount_rw(c);
++		if (err)
++			return err;
++	} else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY))
++		ubifs_remount_ro(c);
++
++	return 0;
++}
++
++struct super_operations ubifs_super_operations = {
++	.alloc_inode   = ubifs_alloc_inode,
++	.destroy_inode = ubifs_destroy_inode,
++	.put_super     = ubifs_put_super,
++	.write_inode   = ubifs_write_inode,
++	.delete_inode  = ubifs_delete_inode,
++	.statfs        = ubifs_statfs,
++	.dirty_inode   = ubifs_dirty_inode,
++	.remount_fs    = ubifs_remount_fs,
++	.show_options  = ubifs_show_options,
++	.sync_fs       = ubifs_sync_fs,
++};
++
++/**
++ * open_ubi - parse UBI device name string and open the UBI device.
++ * @name: UBI volume name
++ * @mode: UBI volume open mode
++ *
++ * There are several ways to specify UBI volumes when mounting UBIFS:
++ * o ubiX_Y    - UBI device number X, volume Y;
++ * o ubiY      - UBI device number 0, volume Y;
++ * o ubiX:NAME - mount UBI device X, volume with name NAME;
++ * o ubi:NAME  - mount UBI device 0, volume with name NAME.
++ *
++ * Alternative '!' separator may be used instead of ':' (because some shells
++ * like busybox may interpret ':' as an NFS host name separator). This function
++ * returns ubi volume object in case of success and a negative error code in
++ * case of failure.
++ */
++static struct ubi_volume_desc *open_ubi(const char *name, int mode)
++{
++	int dev, vol;
++	char *endptr;
++
++	if (name[0] != 'u' || name[1] != 'b' || name[2] != 'i')
++		return ERR_PTR(-EINVAL);
++
++	/* ubi:NAME method */
++	if ((name[3] == ':' || name[3] == '!') && name[4] != '\0')
++		return ubi_open_volume_nm(0, name + 4, mode);
++
++	if (!isdigit(name[3]))
++		return ERR_PTR(-EINVAL);
++
++	dev = simple_strtoul(name + 3, &endptr, 0);
++
++	/* ubiY method */
++	if (*endptr == '\0')
++		return ubi_open_volume(0, dev, mode);
++
++	/* ubiX_Y method */
++	if (*endptr == '_' && isdigit(endptr[1])) {
++		vol = simple_strtoul(endptr + 1, &endptr, 0);
++		if (*endptr != '\0')
++			return ERR_PTR(-EINVAL);
++		return ubi_open_volume(dev, vol, mode);
++	}
++
++	/* ubiX:NAME method */
++	if ((*endptr == ':' || *endptr == '!') && endptr[1] != '\0')
++		return ubi_open_volume_nm(dev, ++endptr, mode);
++
++	return ERR_PTR(-EINVAL);
++}
++
++static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
++{
++	struct ubi_volume_desc *ubi = sb->s_fs_info;
++	struct ubifs_info *c;
++	struct inode *root;
++	int err;
++
++	c = kzalloc(sizeof(struct ubifs_info), GFP_KERNEL);
++	if (!c)
++		return -ENOMEM;
++
++	spin_lock_init(&c->cnt_lock);
++	spin_lock_init(&c->cs_lock);
++	spin_lock_init(&c->buds_lock);
++	spin_lock_init(&c->space_lock);
++	spin_lock_init(&c->orphan_lock);
++	init_rwsem(&c->commit_sem);
++	mutex_init(&c->lp_mutex);
++	mutex_init(&c->tnc_mutex);
++	mutex_init(&c->log_mutex);
++	mutex_init(&c->mst_mutex);
++	mutex_init(&c->umount_mutex);
++	init_waitqueue_head(&c->cmt_wq);
++	c->buds = RB_ROOT;
++	c->old_idx = RB_ROOT;
++	c->size_tree = RB_ROOT;
++	c->orph_tree = RB_ROOT;
++	INIT_LIST_HEAD(&c->infos_list);
++	INIT_LIST_HEAD(&c->idx_gc);
++	INIT_LIST_HEAD(&c->replay_list);
++	INIT_LIST_HEAD(&c->replay_buds);
++	INIT_LIST_HEAD(&c->uncat_list);
++	INIT_LIST_HEAD(&c->empty_list);
++	INIT_LIST_HEAD(&c->freeable_list);
++	INIT_LIST_HEAD(&c->frdi_idx_list);
++	INIT_LIST_HEAD(&c->unclean_leb_list);
++	INIT_LIST_HEAD(&c->old_buds);
++	INIT_LIST_HEAD(&c->orph_list);
++	INIT_LIST_HEAD(&c->orph_new);
++
++	c->highest_inum = UBIFS_FIRST_INO;
++	get_random_bytes(&c->vfs_gen, sizeof(int));
++	c->lhead_lnum = c->ltail_lnum = UBIFS_LOG_LNUM;
++
++	ubi_get_volume_info(ubi, &c->vi);
++	ubi_get_device_info(c->vi.ubi_num, &c->di);
++
++	/* Re-open the UBI device in read-write mode */
++	c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READWRITE);
++	if (IS_ERR(c->ubi)) {
++		err = PTR_ERR(c->ubi);
++		goto out_free;
++	}
++
++	err = ubifs_parse_options(c, data, 0);
++	if (err)
++		goto out_close;
++
++	c->vfs_sb = sb;
++
++	sb->s_fs_info = c;
++	sb->s_magic = UBIFS_SUPER_MAGIC;
++	sb->s_blocksize = UBIFS_BLOCK_SIZE;
++	sb->s_blocksize_bits = UBIFS_BLOCK_SHIFT;
++	sb->s_dev = c->vi.cdev;
++	sb->s_maxbytes = c->max_inode_sz = key_max_inode_size(c);
++	if (c->max_inode_sz > MAX_LFS_FILESIZE)
++		sb->s_maxbytes = c->max_inode_sz = MAX_LFS_FILESIZE;
++	sb->s_op = &ubifs_super_operations;
++
++	mutex_lock(&c->umount_mutex);
++	err = mount_ubifs(c);
++	if (err) {
++		ubifs_assert(err < 0);
++		goto out_unlock;
++	}
++
++	/* Read the root inode */
++	root = ubifs_iget(sb, UBIFS_ROOT_INO);
++	if (IS_ERR(root)) {
++		err = PTR_ERR(root);
++		goto out_umount;
++	}
++
++	sb->s_root = d_alloc_root(root);
++	if (!sb->s_root)
++		goto out_iput;
++
++	mutex_unlock(&c->umount_mutex);
++
++	return 0;
++
++out_iput:
++	iput(root);
++out_umount:
++	ubifs_umount(c);
++out_unlock:
++	mutex_unlock(&c->umount_mutex);
++out_close:
++	ubi_close_volume(c->ubi);
++out_free:
++	kfree(c);
++	return err;
++}
++
++static int sb_test(struct super_block *sb, void *data)
++{
++	dev_t *dev = data;
++
++	return sb->s_dev == *dev;
++}
++
++static int sb_set(struct super_block *sb, void *data)
++{
++	dev_t *dev = data;
++
++	sb->s_dev = *dev;
++	return 0;
++}
++
++static int ubifs_get_sb(struct file_system_type *fs_type, int flags,
++			const char *name, void *data, struct vfsmount *mnt)
++{
++	struct ubi_volume_desc *ubi;
++	struct ubi_volume_info vi;
++	struct super_block *sb;
++	int err;
++
++	dbg_gen("name %s, flags %#x", name, flags);
++
++	/*
++	 * Get UBI device number and volume ID. Mount it read-only so far
++	 * because this might be a new mount point, and UBI allows only one
++	 * read-write user at a time.
++	 */
++	ubi = open_ubi(name, UBI_READONLY);
++	if (IS_ERR(ubi)) {
++		ubifs_err("cannot open \"%s\", error %d",
++			  name, (int)PTR_ERR(ubi));
++		return PTR_ERR(ubi);
++	}
++	ubi_get_volume_info(ubi, &vi);
++
++	dbg_gen("opened ubi%d_%d", vi.ubi_num, vi.vol_id);
++
++	sb = sget(fs_type, &sb_test, &sb_set, &vi.cdev);
++	if (IS_ERR(sb)) {
++		err = PTR_ERR(sb);
++		goto out_close;
++	}
++
++	if (sb->s_root) {
++		/* A new mount point for already mounted UBIFS */
++		dbg_gen("this ubi volume is already mounted");
++		if ((flags ^ sb->s_flags) & MS_RDONLY) {
++			err = -EBUSY;
++			goto out_deact;
++		}
++	} else {
++		sb->s_flags = flags;
++		/*
++		 * Pass 'ubi' to 'fill_super()' in sb->s_fs_info where it is
++		 * replaced by 'c'.
++		 */
++		sb->s_fs_info = ubi;
++		err = ubifs_fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
++		if (err)
++			goto out_deact;
++		/* We do not support atime */
++		sb->s_flags |= MS_ACTIVE | MS_NOATIME;
++	}
++
++	/* 'fill_super()' opens ubi again so we must close it here */
++	ubi_close_volume(ubi);
++
++	return simple_set_mnt(mnt, sb);
++
++out_deact:
++	up_write(&sb->s_umount);
++	deactivate_super(sb);
++out_close:
++	ubi_close_volume(ubi);
++	return err;
++}
++
++static void ubifs_kill_sb(struct super_block *sb)
++{
++	struct ubifs_info *c = sb->s_fs_info;
++
++	/*
++	 * We do 'commit_on_unmount()' here instead of 'ubifs_put_super()'
++	 * in order to be outside BKL.
++	 */
++	if (sb->s_root && !(sb->s_flags & MS_RDONLY))
++		commit_on_unmount(c);
++	/* The un-mount routine is actually done in put_super() */
++	generic_shutdown_super(sb);
++}
++
++static struct file_system_type ubifs_fs_type = {
++	.name    = "ubifs",
++	.owner   = THIS_MODULE,
++	.get_sb  = ubifs_get_sb,
++	.kill_sb = ubifs_kill_sb
++};
++
++/*
++ * Inode slab cache constructor.
++ */
++static void inode_slab_ctor(struct kmem_cache *cachep, void *obj)
++{
++	struct ubifs_inode *inode = obj;
++	inode_init_once(&inode->vfs_inode);
++}
++
++static int __init ubifs_init(void)
++{
++	int err;
++
++	BUILD_BUG_ON(sizeof(struct ubifs_ch) != 24);
++
++	/* Make sure node sizes are 8-byte aligned */
++	BUILD_BUG_ON(UBIFS_CH_SZ        & 7);
++	BUILD_BUG_ON(UBIFS_INO_NODE_SZ  & 7);
++	BUILD_BUG_ON(UBIFS_DENT_NODE_SZ & 7);
++	BUILD_BUG_ON(UBIFS_XENT_NODE_SZ & 7);
++	BUILD_BUG_ON(UBIFS_DATA_NODE_SZ & 7);
++	BUILD_BUG_ON(UBIFS_TRUN_NODE_SZ & 7);
++	BUILD_BUG_ON(UBIFS_SB_NODE_SZ   & 7);
++	BUILD_BUG_ON(UBIFS_MST_NODE_SZ  & 7);
++	BUILD_BUG_ON(UBIFS_REF_NODE_SZ  & 7);
++	BUILD_BUG_ON(UBIFS_CS_NODE_SZ   & 7);
++	BUILD_BUG_ON(UBIFS_ORPH_NODE_SZ & 7);
++
++	BUILD_BUG_ON(UBIFS_MAX_DENT_NODE_SZ & 7);
++	BUILD_BUG_ON(UBIFS_MAX_XENT_NODE_SZ & 7);
++	BUILD_BUG_ON(UBIFS_MAX_DATA_NODE_SZ & 7);
++	BUILD_BUG_ON(UBIFS_MAX_INO_NODE_SZ  & 7);
++	BUILD_BUG_ON(UBIFS_MAX_NODE_SZ      & 7);
++	BUILD_BUG_ON(MIN_WRITE_SZ           & 7);
++
++	/* Check min. node size */
++	BUILD_BUG_ON(UBIFS_INO_NODE_SZ  < MIN_WRITE_SZ);
++	BUILD_BUG_ON(UBIFS_DENT_NODE_SZ < MIN_WRITE_SZ);
++	BUILD_BUG_ON(UBIFS_XENT_NODE_SZ < MIN_WRITE_SZ);
++	BUILD_BUG_ON(UBIFS_TRUN_NODE_SZ < MIN_WRITE_SZ);
++
++	BUILD_BUG_ON(UBIFS_MAX_DENT_NODE_SZ > UBIFS_MAX_NODE_SZ);
++	BUILD_BUG_ON(UBIFS_MAX_XENT_NODE_SZ > UBIFS_MAX_NODE_SZ);
++	BUILD_BUG_ON(UBIFS_MAX_DATA_NODE_SZ > UBIFS_MAX_NODE_SZ);
++	BUILD_BUG_ON(UBIFS_MAX_INO_NODE_SZ  > UBIFS_MAX_NODE_SZ);
++
++	/* Defined node sizes */
++	BUILD_BUG_ON(UBIFS_SB_NODE_SZ  != 4096);
++	BUILD_BUG_ON(UBIFS_MST_NODE_SZ != 512);
++	BUILD_BUG_ON(UBIFS_INO_NODE_SZ != 160);
++	BUILD_BUG_ON(UBIFS_REF_NODE_SZ != 64);
++
++	/*
++	 * We require that PAGE_CACHE_SIZE is greater-than-or-equal-to
++	 * UBIFS_BLOCK_SIZE. It is assumed that both are powers of 2.
++	 */
++	if (PAGE_CACHE_SIZE < UBIFS_BLOCK_SIZE) {
++		ubifs_err("VFS page cache size is %u bytes, but UBIFS requires"
++			  " at least 4096 bytes",
++			  (unsigned int)PAGE_CACHE_SIZE);
++		return -EINVAL;
++	}
++
++	err  = bdi_init(&ubifs_backing_dev_info);
++	if (err)
++		return err;
++
++	err = register_filesystem(&ubifs_fs_type);
++	if (err) {
++		ubifs_err("cannot register file system, error %d", err);
++		goto out;
++	}
++
++	err = -ENOMEM;
++	ubifs_inode_slab = kmem_cache_create("ubifs_inode_slab",
++				sizeof(struct ubifs_inode), 0,
++				SLAB_MEM_SPREAD | SLAB_RECLAIM_ACCOUNT,
++				&inode_slab_ctor);
++	if (!ubifs_inode_slab)
++		goto out_reg;
++
++	register_shrinker(&ubifs_shrinker_info);
++
++	err = ubifs_compressors_init();
++	if (err)
++		goto out_compr;
++
++	return 0;
++
++out_compr:
++	unregister_shrinker(&ubifs_shrinker_info);
++	kmem_cache_destroy(ubifs_inode_slab);
++out_reg:
++	unregister_filesystem(&ubifs_fs_type);
++out:
++	bdi_destroy(&ubifs_backing_dev_info);
++	return err;
++}
++/* late_initcall to let compressors initialize first */
++late_initcall(ubifs_init);
++
++static void __exit ubifs_exit(void)
++{
++	ubifs_assert(list_empty(&ubifs_infos));
++	ubifs_assert(atomic_long_read(&ubifs_clean_zn_cnt) == 0);
++
++	ubifs_compressors_exit();
++	unregister_shrinker(&ubifs_shrinker_info);
++	kmem_cache_destroy(ubifs_inode_slab);
++	unregister_filesystem(&ubifs_fs_type);
++	bdi_destroy(&ubifs_backing_dev_info);
++}
++module_exit(ubifs_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_VERSION(__stringify(UBIFS_VERSION));
++MODULE_AUTHOR("Artem Bityutskiy, Adrian Hunter");
++MODULE_DESCRIPTION("UBIFS - UBI File System");
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/tnc.c avr32-2.6/fs/ubifs/tnc.c
+--- linux-2.6.25.6/fs/ubifs/tnc.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/tnc.c	2008-06-12 15:09:45.600758286 +0200
+@@ -0,0 +1,2961 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file implements TNC (Tree Node Cache) which caches indexing nodes of
++ * the UBIFS B-tree.
++ *
++ * At the moment the locking rules of the TNC tree are quite simple and
++ * straightforward. We just have a mutex and lock it when we traverse the
++ * tree. If a znode is not in memory, we read it from flash while still having
++ * the mutex locked.
++ */
++
++#include <linux/crc32.h>
++#include "ubifs.h"
++
++/*
++ * Returned codes of 'matches_name()' and 'fallible_matches_name()' functions.
++ * @NAME_LESS: name corresponding to the first argument is less than second
++ * @NAME_MATCHES: names match
++ * @NAME_GREATER: name corresponding to the second argument is greater than
++ *                first
++ * @NOT_ON_MEDIA: node referred by zbranch does not exist on the media
++ *
++ * These constants were introduce to improve readability.
++ */
++enum {
++	NAME_LESS    = 0,
++	NAME_MATCHES = 1,
++	NAME_GREATER = 2,
++	NOT_ON_MEDIA = 3,
++};
++
++/**
++ * insert_old_idx - record an index node obsoleted since the last commit start.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of obsoleted index node
++ * @offs: offset of obsoleted index node
++ *
++ * Returns %0 on success, and a negative error code on failure.
++ *
++ * For recovery, there must always be a complete intact version of the index on
++ * flash at all times. That is called the "old index". It is the index as at the
++ * time of the last successful commit. Many of the index nodes in the old index
++ * may be dirty, but they must not be erased until the next successful commit
++ * (at which point that index becomes the old index).
++ *
++ * That means that the garbage collection and the in-the-gaps method of
++ * committing must be able to determine if an index node is in the old index.
++ * Most of the old index nodes can be found by looking up the TNC using the
++ * 'lookup_znode()' function. However, some of the old index nodes may have
++ * been deleted from the current index or may have been changed so much that
++ * they cannot be easily found. In those cases, an entry is added to an RB-tree.
++ * That is what this function does. The RB-tree is ordered by LEB number and
++ * offset because they uniquely identify the old index node.
++ */
++static int insert_old_idx(struct ubifs_info *c, int lnum, int offs)
++{
++	struct ubifs_old_idx *old_idx, *o;
++	struct rb_node **p, *parent = NULL;
++
++	old_idx = kmalloc(sizeof(struct ubifs_old_idx), GFP_NOFS);
++	if (unlikely(!old_idx))
++		return -ENOMEM;
++	old_idx->lnum = lnum;
++	old_idx->offs = offs;
++
++	p = &c->old_idx.rb_node;
++	while (*p) {
++		parent = *p;
++		o = rb_entry(parent, struct ubifs_old_idx, rb);
++		if (lnum < o->lnum)
++			p = &(*p)->rb_left;
++		else if (lnum > o->lnum)
++			p = &(*p)->rb_right;
++		else if (offs < o->offs)
++			p = &(*p)->rb_left;
++		else if (offs > o->offs)
++			p = &(*p)->rb_right;
++		else {
++			ubifs_err("old idx added twice!");
++			kfree(old_idx);
++			return 0;
++		}
++	}
++	rb_link_node(&old_idx->rb, parent, p);
++	rb_insert_color(&old_idx->rb, &c->old_idx);
++	return 0;
++}
++
++/**
++ * insert_old_idx_znode - record a znode obsoleted since last commit start.
++ * @c: UBIFS file-system description object
++ * @znode: znode of obsoleted index node
++ *
++ * Returns %0 on success, and a negative error code on failure.
++ */
++int insert_old_idx_znode(struct ubifs_info *c, struct ubifs_znode *znode)
++{
++	if (znode->parent) {
++		struct ubifs_zbranch *zbr;
++
++		zbr = &znode->parent->zbranch[znode->iip];
++		if (zbr->len)
++			return insert_old_idx(c, zbr->lnum, zbr->offs);
++	} else
++		if (c->zroot.len)
++			return insert_old_idx(c, c->zroot.lnum,
++					      c->zroot.offs);
++	return 0;
++}
++
++/**
++ * ins_clr_old_idx_znode - record a znode obsoleted since last commit start.
++ * @c: UBIFS file-system description object
++ * @znode: znode of obsoleted index node
++ *
++ * Returns %0 on success, and a negative error code on failure.
++ */
++static int ins_clr_old_idx_znode(struct ubifs_info *c,
++				 struct ubifs_znode *znode)
++{
++	int err;
++
++	if (znode->parent) {
++		struct ubifs_zbranch *zbr;
++
++		zbr = &znode->parent->zbranch[znode->iip];
++		if (zbr->len) {
++			err = insert_old_idx(c, zbr->lnum, zbr->offs);
++			if (err)
++				return err;
++			zbr->lnum = 0;
++			zbr->offs = 0;
++			zbr->len = 0;
++		}
++	} else
++		if (c->zroot.len) {
++			err = insert_old_idx(c, c->zroot.lnum, c->zroot.offs);
++			if (err)
++				return err;
++			c->zroot.lnum = 0;
++			c->zroot.offs = 0;
++			c->zroot.len = 0;
++		}
++	return 0;
++}
++
++/**
++ * destroy_old_idx - destroy the old_idx RB-tree.
++ * @c: UBIFS file-system description object
++ *
++ * During start commit, the old_idx RB-tree is used to avoid overwriting index
++ * nodes that were in the index last commit but have since been deleted.  This
++ * is necessary for recovery i.e. the old index must be kept intact until the
++ * new index is successfully written.  The old-idx RB-tree is used for the
++ * in-the-gaps method of writing index nodes and is destroyed every commit.
++ */
++void destroy_old_idx(struct ubifs_info *c)
++{
++	struct rb_node *this = c->old_idx.rb_node;
++	struct ubifs_old_idx *old_idx;
++
++	while (this) {
++		if (this->rb_left) {
++			this = this->rb_left;
++			continue;
++		} else if (this->rb_right) {
++			this = this->rb_right;
++			continue;
++		}
++		old_idx = rb_entry(this, struct ubifs_old_idx, rb);
++		this = rb_parent(this);
++		if (this) {
++			if (this->rb_left == &old_idx->rb)
++				this->rb_left = NULL;
++			else
++				this->rb_right = NULL;
++		}
++		kfree(old_idx);
++	}
++	c->old_idx = RB_ROOT;
++}
++
++/**
++ * copy_znode - copy a dirty znode.
++ * @c: UBIFS file-system description object
++ * @znode: znode to copy
++ *
++ * A dirty znode being committed may not be changed, so it is copied.
++ */
++static struct ubifs_znode *copy_znode(struct ubifs_info *c,
++				      struct ubifs_znode *znode)
++{
++	struct ubifs_znode *zn;
++
++	zn = kmalloc(c->max_znode_sz, GFP_NOFS);
++	if (unlikely(!zn))
++		return ERR_PTR(-ENOMEM);
++
++	memcpy(zn, znode, c->max_znode_sz);
++	zn->cnext = NULL;
++	__set_bit(DIRTY_ZNODE, &zn->flags);
++	__clear_bit(COW_ZNODE, &zn->flags);
++
++	ubifs_assert(!test_bit(OBSOLETE_ZNODE, &znode->flags));
++	__set_bit(OBSOLETE_ZNODE, &znode->flags);
++
++	if (znode->level != 0) {
++		int i;
++		const int n = zn->child_cnt;
++
++		/* The children now have new parent */
++		for (i = 0; i < n; i++) {
++			struct ubifs_zbranch *zbr = &zn->zbranch[i];
++
++			if (zbr->znode)
++				zbr->znode->parent = zn;
++		}
++	}
++
++	atomic_long_inc(&c->dirty_zn_cnt);
++	return zn;
++}
++
++/**
++ * add_idx_dirt - add dirt due to a dirty znode.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of index node
++ * @dirt: size of index node
++ *
++ * This function updates lprops dirty space and the new size of the index.
++ */
++static int add_idx_dirt(struct ubifs_info *c, int lnum, int dirt)
++{
++	c->calc_idx_sz -= ALIGN(dirt, 8);
++	return ubifs_add_dirt(c, lnum, dirt);
++}
++
++/**
++ * dirty_cow_znode - ensure a znode is not being committed.
++ * @c: UBIFS file-system description object
++ * @zbr: branch of znode to check
++ *
++ * Returns dirtied znode on success or negative error code on failure.
++ */
++static struct ubifs_znode *dirty_cow_znode(struct ubifs_info *c,
++					   struct ubifs_zbranch *zbr)
++{
++	struct ubifs_znode *znode = zbr->znode;
++	struct ubifs_znode *zn;
++	int err;
++
++	if (!test_bit(COW_ZNODE, &znode->flags)) {
++		/* znode is not being committed */
++		if (!test_and_set_bit(DIRTY_ZNODE, &znode->flags)) {
++			atomic_long_inc(&c->dirty_zn_cnt);
++			atomic_long_dec(&c->clean_zn_cnt);
++			atomic_long_dec(&ubifs_clean_zn_cnt);
++			err = add_idx_dirt(c, zbr->lnum, zbr->len);
++			if (unlikely(err))
++				return ERR_PTR(err);
++		}
++		return znode;
++	}
++
++	zn = copy_znode(c, znode);
++	if (unlikely(IS_ERR(zn)))
++		return zn;
++
++	if (zbr->len) {
++		err = insert_old_idx(c, zbr->lnum, zbr->offs);
++		if (unlikely(err))
++			return ERR_PTR(err);
++		err = add_idx_dirt(c, zbr->lnum, zbr->len);
++	} else
++		err = 0;
++
++	zbr->znode = zn;
++	zbr->lnum = 0;
++	zbr->offs = 0;
++	zbr->len = 0;
++
++	if (unlikely(err))
++		return ERR_PTR(err);
++	return zn;
++}
++
++/**
++ * lnc_add - add a leaf node to the leaf node cache.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of leaf node
++ * @node: leaf node
++ *
++ * Leaf nodes are non-index nodes directory entry nodes or data nodes. The
++ * purpose of the leaf node cache is to save re-reading the same leaf node over
++ * and over again. Most things are cached by VFS, however the file system must
++ * cache directory entries for readdir and for resolving hash collisions. The
++ * present implementation of the leaf node cache is extremely simple, and
++ * allows for error returns that are not used but that may be needed if a more
++ * complex implementation is created.
++ *
++ * Note, this function does not add the @node object to LNC directly, but
++ * allocates a copy of the object and adds the copy to LNC. The reason for this
++ * is that @node has been allocated outside of the TNC subsystem and will be
++ * used with @c->tnc_mutex unlock upon return from the TNC subsystem. But LNC
++ * may be changed at any time, e.g. freed by the shrinker.
++ */
++static int lnc_add(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++		   const void *node)
++{
++	int err;
++	void *lnc_node;
++	const struct ubifs_dent_node *dent = node;
++
++	ubifs_assert(!zbr->leaf);
++	ubifs_assert(zbr->len != 0);
++	ubifs_assert(is_hash_key(c, &zbr->key));
++
++	err = ubifs_validate_entry(c, dent);
++	if (err) {
++		dbg_dump_stack();
++		dbg_dump_node(c, dent);
++		return err;
++	}
++
++	lnc_node = kmalloc(zbr->len, GFP_NOFS);
++	if (!lnc_node)
++		/* We don't have to have the cache, so no error */
++		return 0;
++
++	memcpy(lnc_node, node, zbr->len);
++	zbr->leaf = lnc_node;
++	return 0;
++}
++
++ /**
++ * lnc_add_directly - add a leaf node to the leaf-node-cache.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of leaf node
++ * @node: leaf node
++ *
++ * This function is similar to 'lnc_add()', but it does not create a copy of
++ * @node but inserts @node to TNC directly.
++ */
++static int lnc_add_directly(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++			    void *node)
++{
++	int err;
++
++	ubifs_assert(!zbr->leaf);
++	ubifs_assert(zbr->len != 0);
++
++	err = ubifs_validate_entry(c, node);
++	if (err) {
++		dbg_dump_stack();
++		dbg_dump_node(c, node);
++		return err;
++	}
++
++	zbr->leaf = node;
++	return 0;
++}
++
++/**
++ * lnc_free - remove a leaf node from the leaf node cache.
++ * @zbr: zbranch of leaf node
++ * @node: leaf node
++ */
++static void lnc_free(struct ubifs_zbranch *zbr)
++{
++	if (!zbr->leaf)
++		return;
++	kfree(zbr->leaf);
++	zbr->leaf = NULL;
++}
++
++/**
++ * tnc_read_node_nm - read a "hashed" leaf node.
++ * @c: UBIFS file-system description object
++ * @zbr: key and position of the node
++ * @node: node is returned here
++ *
++ * This function reads a "hashed" node defined by @zbr from the leaf node cache
++ * (in it is there) or from the hash media, in which case the node is also
++ * added to LNC. Returns zero in case of success or a negative negative error
++ * code in case of failure.
++ */
++static int tnc_read_node_nm(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++			    void *node)
++{
++	int err;
++
++	ubifs_assert(is_hash_key(c, &zbr->key));
++
++	if (zbr->leaf) {
++		/* Read from the leaf node cache */
++		ubifs_assert(zbr->len != 0);
++		memcpy(node, zbr->leaf, zbr->len);
++		return 0;
++	}
++
++	err = ubifs_tnc_read_node(c, zbr, node);
++	if (err)
++		return err;
++
++	/* Add the node to the leaf node cache */
++	err = lnc_add(c, zbr, node);
++	return err;
++}
++
++/**
++ * try_read_node - read a node if it is a node.
++ * @c: UBIFS file-system description object
++ * @buf: buffer to read to
++ * @type: node type
++ * @len: node length (not aligned)
++ * @lnum: LEB number of node to read
++ * @offs: offset of node to read
++ *
++ * This function tries to read a node of known type and length, checks it and
++ * stores it in @buf. This function returns %1 if a node is present and %0 if
++ * a node is not present. A negative error code is returned for I/O errors.
++ * This function performs that same function as ubifs_read_node except that
++ * it does not require that there is actually a node present and instead
++ * the return code indicates if a node was read.
++ */
++static int try_read_node(const struct ubifs_info *c, void *buf, int type,
++			 int len, int lnum, int offs)
++{
++	int err, node_len;
++	struct ubifs_ch *ch = buf;
++	uint32_t crc, node_crc;
++
++	dbg_io("LEB %d:%d, %s, length %d", lnum, offs, dbg_ntype(type), len);
++
++	err = ubi_read(c->ubi, lnum, buf, offs, len);
++	if (err) {
++		ubifs_err("cannot read node type %d from LEB %d:%d, error %d",
++			  type, lnum, offs, err);
++		return err;
++	}
++
++	if (le32_to_cpu(ch->magic) != UBIFS_NODE_MAGIC)
++		return 0;
++
++	if (ch->node_type != type)
++		return 0;
++
++	node_len = le32_to_cpu(ch->len);
++	if (node_len != len)
++		return 0;
++
++	crc = crc32(UBIFS_CRC32_INIT, buf + 8, node_len - 8);
++	node_crc = le32_to_cpu(ch->crc);
++	if (crc != node_crc)
++		return 0;
++
++	return 1;
++}
++
++/**
++ * fallible_read_node - try to read a leaf node.
++ * @c: UBIFS file-system description object
++ * @key:  key of node to read
++ * @zbr:  position of node
++ * @node: node returned
++ *
++ * This function tries to read a node and returns %1 if the node is read, %0
++ * if the node is not present, and a negative error code in the case of error.
++ */
++static int fallible_read_node(struct ubifs_info *c, const union ubifs_key *key,
++			      struct ubifs_zbranch *zbr, void *node)
++{
++	int ret;
++
++	dbg_tnc("LEB %d:%d, key %s", zbr->lnum, zbr->offs, DBGKEY(key));
++
++	ret = try_read_node(c, node, key_type(c, key), zbr->len, zbr->lnum,
++			    zbr->offs);
++	if (ret == 1) {
++		union ubifs_key node_key;
++		struct ubifs_dent_node *dent = node;
++
++		/* All nodes have key in the same place */
++		key_read(c, &dent->key, &node_key);
++		if (keys_cmp(c, key, &node_key) != 0)
++			ret = 0;
++	}
++	if (ret == 0)
++		dbg_mnt("dangling branch LEB %d:%d len %d, key %s",
++			zbr->lnum, zbr->offs, zbr->len, DBGKEY(key));
++	return ret;
++}
++
++/**
++ * matches_name - determine if a directory or extended attribute entry matches
++ *                a given name.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of dent
++ * @nm: name to match
++ *
++ * This function checks if xentry/direntry referred by zbranch @zbr matches name
++ * @nm. Returns %NAME_MATCHES if it does, %NAME_LESS if the name referred by
++ * @zbr is less than @nm, and %NAME_GREATER if it is greater than @nm. In case
++ * of failure, a negative error code is returned.
++ */
++static int matches_name(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++			const struct qstr *nm)
++{
++	struct ubifs_dent_node *dent;
++	int nlen, err;
++
++	/* If possible, match against the dent in the leaf node cache */
++	if (!zbr->leaf) {
++		dent = kmalloc(zbr->len, GFP_NOFS);
++		if (!dent)
++			return -ENOMEM;
++
++		err = ubifs_tnc_read_node(c, zbr, dent);
++		if (err)
++			goto out_free;
++
++		/* Add the node to the leaf node cache */
++		err = lnc_add_directly(c, zbr, dent);
++		if (err)
++			goto out_free;
++	} else
++		dent = zbr->leaf;
++
++	nlen = le16_to_cpu(dent->nlen);
++	err = memcmp(dent->name, nm->name, min_t(int, nlen, nm->len));
++	if (err == 0) {
++		if (nlen == nm->len)
++			return NAME_MATCHES;
++		else if (nlen < nm->len)
++			return NAME_LESS;
++		else
++			return NAME_GREATER;
++	} else if (err < 0)
++		return NAME_LESS;
++	else
++		return NAME_GREATER;
++
++out_free:
++	kfree(dent);
++	return err;
++}
++
++/**
++ * get_znode - get a TNC znode that may not be loaded yet.
++ * @c: UBIFS file-system description object
++ * @znode: parent znode
++ * @n: znode branch slot number
++ *
++ * This function returns the znode or a negative error code.
++ */
++static struct ubifs_znode *get_znode(struct ubifs_info *c,
++				     struct ubifs_znode *znode, int n)
++{
++	struct ubifs_zbranch *zbr;
++
++	zbr = &znode->zbranch[n];
++	if (zbr->znode)
++		znode = zbr->znode;
++	else
++		znode = ubifs_load_znode(c, zbr, znode, n);
++	return znode;
++}
++
++/**
++ * tnc_next - find next TNC entry.
++ * @c: UBIFS file-system description object
++ * @zn: znode is passed and returned here
++ * @n: znode branch slot number is passed and returned here
++ *
++ * This function returns %0 if the next TNC entry is found, %-ENOENT if there is
++ * no next entry, or a negative error code otherwise.
++ */
++static int tnc_next(struct ubifs_info *c, struct ubifs_znode **zn, int *n)
++{
++	struct ubifs_znode *znode = *zn;
++	int nn = *n;
++
++	nn += 1;
++	if (nn < znode->child_cnt) {
++		*n = nn;
++		return 0;
++	}
++	while (1) {
++		struct ubifs_znode *zp;
++
++		zp = znode->parent;
++		if (!zp)
++			return -ENOENT;
++		nn = znode->iip + 1;
++		znode = zp;
++		if (nn < znode->child_cnt) {
++			znode = get_znode(c, znode, nn);
++			if (IS_ERR(znode))
++				return PTR_ERR(znode);
++			while (znode->level != 0) {
++				znode = get_znode(c, znode, 0);
++				if (IS_ERR(znode))
++					return PTR_ERR(znode);
++			}
++			nn = 0;
++			break;
++		}
++	}
++	*zn = znode;
++	*n = nn;
++	return 0;
++}
++
++/**
++ * tnc_prev - find previous TNC entry.
++ * @c: UBIFS file-system description object
++ * @zn: znode is returned here
++ * @n: znode branch slot number is passed and returned here
++ *
++ * This function returns %0 if the previous TNC entry is found, %-ENOENT if
++ * there is no next entry, or a negative error code otherwise.
++ */
++static int tnc_prev(struct ubifs_info *c, struct ubifs_znode **zn, int *n)
++{
++	struct ubifs_znode *znode = *zn;
++	int nn = *n;
++
++	if (nn > 0) {
++		*n = nn - 1;
++		return 0;
++	}
++	while (1) {
++		struct ubifs_znode *zp;
++
++		zp = znode->parent;
++		if (!zp)
++			return -ENOENT;
++		nn = znode->iip - 1;
++		znode = zp;
++		if (nn >= 0) {
++			znode = get_znode(c, znode, nn);
++			if (IS_ERR(znode))
++				return PTR_ERR(znode);
++			while (znode->level != 0) {
++				nn = znode->child_cnt - 1;
++				znode = get_znode(c, znode, nn);
++				if (IS_ERR(znode))
++					return PTR_ERR(znode);
++			}
++			nn = znode->child_cnt - 1;
++			break;
++		}
++	}
++	*zn = znode;
++	*n = nn;
++	return 0;
++}
++
++/**
++ * resolve_collision - resolve a collision.
++ * @c: UBIFS file-system description object
++ * @key: key of a directory or extended attribute entry
++ * @zn: znode is returned here
++ * @n: zbranch number is passed and returned here
++ * @nm: name of the entry
++ *
++ * This function is called for "hashed" keys to make sure that the found key
++ * really corresponds to the looked up node (directory or extended attribute
++ * entry). It returns %1 and sets @zn and @n if the collision is resolved.
++ * %0 is returned if @nm is not found and @zn and @n are set to the previous
++ * entry, i.e. to the entry after which @nm could follow if it were in TNC.
++ * This means that @n may be set to %-1 if the leftmost key in @zn is the
++ * previous one. A negative error code is returned on failures.
++ */
++static int resolve_collision(struct ubifs_info *c, const union ubifs_key *key,
++			     struct ubifs_znode **zn, int *n,
++			     const struct qstr *nm)
++{
++	int err;
++
++	err = matches_name(c, &(*zn)->zbranch[*n], nm);
++	if (unlikely(err < 0))
++		return err;
++	if (err == NAME_MATCHES)
++		return 1;
++
++	if (err == NAME_GREATER) {
++		/* Look left */
++		while (1) {
++			err = tnc_prev(c, zn, n);
++			if (err == -ENOENT) {
++				ubifs_assert(*n == 0);
++				*n = -1;
++				return 0;
++			}
++			if (err < 0)
++				return err;
++			if (keys_cmp(c, &(*zn)->zbranch[*n].key, key)) {
++				/*
++				 * We have found the branch after which we would
++				 * like to insert, but inserting in this znode
++				 * may still be wrong. Consider the following 3
++				 * znodes, in the case where we are resolving a
++				 * collision with Key2.
++				 *
++				 *                  znode zp
++				 *            ----------------------
++				 * level 1     |  Key0  |  Key1  |
++				 *            -----------------------
++				 *                 |            |
++				 *       znode za  |            |  znode zb
++				 *          ------------      ------------
++				 * level 0  |  Key0  |        |  Key2  |
++				 *          ------------      ------------
++				 *
++				 * The lookup finds Key2 in znode zb. Lets say
++				 * there is no match and the name is greater so
++				 * we look left. When we find Key0, we end up
++				 * here. If we return now, we will insert into
++				 * znode za at slot n = 1.  But that is invalid
++				 * according to the parent's keys.  Key2 must
++				 * be inserted into znode zb.
++				 *
++				 * Note, this problem is not relevant for the
++				 * case when we go right, because
++				 * 'tnc_insert()' would correct the parent key.
++				 */
++				if (*n == (*zn)->child_cnt - 1) {
++					err = tnc_next(c, zn, n);
++					if (err) {
++						/* Should be impossible */
++						ubifs_assert(0);
++						if (err == -ENOENT)
++							err = -EINVAL;
++						return err;
++					}
++					ubifs_assert(*n == 0);
++					*n = -1;
++				}
++				return 0;
++			}
++			err = matches_name(c, &(*zn)->zbranch[*n], nm);
++			if (err < 0)
++				return err;
++			if (err == NAME_LESS)
++				return 0;
++			if (err == NAME_MATCHES)
++				return 1;
++			ubifs_assert(err == NAME_GREATER);
++		}
++	} else {
++		int nn = *n;
++		struct ubifs_znode *znode = *zn;
++
++		/* Look right */
++		while (1) {
++			err = tnc_next(c, &znode, &nn);
++			if (err == -ENOENT)
++				return 0;
++			if (err < 0)
++				return err;
++			if (keys_cmp(c, &znode->zbranch[nn].key, key))
++				return 0;
++			err = matches_name(c, &znode->zbranch[nn], nm);
++			if (err < 0)
++				return err;
++			if (err == NAME_GREATER)
++				return 0;
++			*zn = znode;
++			*n = nn;
++			if (err == NAME_MATCHES)
++				return 1;
++			ubifs_assert(err == NAME_LESS);
++		}
++	}
++}
++
++/**
++ * fallible_matches_name - determine if a dent matches a given name.
++ * @c: UBIFS file-system description object
++ * @zbr: zbranch of dent
++ * @nm: name to match
++ *
++ * This is a "fallible" version of 'matches_name()' function which does not
++ * panic if the direntry/xentry referred by @zbr does not exist on the media.
++ *
++ * This function checks if xentry/direntry referred by zbranch @zbr matches name
++ * @nm. Returns %NAME_MATCHES it does, %NAME_LESS if the name referred by @zbr
++ * is less than @nm, %NAME_GREATER if it is greater than @nm, and @NOT_ON_MEDIA
++ * if xentry/direntry referred by @zbr does not exist on the media. A negative
++ * error code is returned in case of failure.
++ */
++static int fallible_matches_name(struct ubifs_info *c,
++				 struct ubifs_zbranch *zbr,
++				 const struct qstr *nm)
++{
++	struct ubifs_dent_node *dent;
++	int nlen, err;
++
++	/* If possible, match against the dent in the leaf node cache */
++	if (!zbr->leaf) {
++		dent = kmalloc(zbr->len, GFP_NOFS);
++		if (!dent)
++			return -ENOMEM;
++
++		err = fallible_read_node(c, &zbr->key, zbr, dent);
++		if (err < 0)
++			goto out_free;
++		if (err == 0) {
++			/* The node was not present */
++			err = NOT_ON_MEDIA;
++			goto out_free;
++		}
++		ubifs_assert(err == 1);
++
++		err = lnc_add_directly(c, zbr, dent);
++		if (err)
++			goto out_free;
++	} else
++		dent = zbr->leaf;
++
++	nlen = le16_to_cpu(dent->nlen);
++	err = memcmp(dent->name, nm->name, min_t(int, nlen, nm->len));
++	if (err == 0) {
++		if (nlen == nm->len)
++			return NAME_MATCHES;
++		else if (nlen < nm->len)
++			return NAME_LESS;
++		else
++			return NAME_GREATER;
++	} else if (err < 0)
++		return NAME_LESS;
++	else
++		return NAME_GREATER;
++
++out_free:
++	kfree(dent);
++	return err;
++}
++
++/**
++ * fallible_resolve_collision - resolve a collision even if nodes are missing.
++ * @c: UBIFS file-system description object
++ * @key: key
++ * @zn: znode is returned here
++ * @n: branch number is passed and returned here
++ * @nm: name of directory entry
++ * @adding: indicates caller is adding a key to the TNC
++ *
++ * This is a "fallible" version of the 'resolve_collision()' function which
++ * does not panic if one of the nodes referred to by TNC does not exist on the
++ * media. This may happen when replaying the journal if a deleted node was
++ * Garbage-collected and the commit was not done. A branch that refers to a node
++ * that is not present is called a dangling branch. The following are the return
++ * codes for this function:
++ *  o if @nm was found, %1 is returned and @zn and @n are set to the found
++ *    branch;
++ *  o if we are @adding and @nm was not found, %0 is returned;
++ *  o if we are not @adding and @nm was not found, but a dangling branch was
++ *    found, then %1 is returned and @zn and @n are set to the dangling branch;
++ *  o a negative error code is returned in case of failure.
++ */
++static int fallible_resolve_collision(struct ubifs_info *c,
++				      const union ubifs_key *key,
++				      struct ubifs_znode **zn, int *n,
++				      const struct qstr *nm, int adding)
++{
++	struct ubifs_znode *o_znode = NULL, *znode = *zn;
++	int uninitialized_var(o_n), err, cmp, unsure = 0, nn = *n;
++
++	cmp = fallible_matches_name(c, &znode->zbranch[nn], nm);
++	if (unlikely(cmp < 0))
++		return cmp;
++	if (cmp == NAME_MATCHES)
++		return 1;
++	if (cmp == NOT_ON_MEDIA) {
++		o_znode = znode;
++		o_n = nn;
++		/*
++		 * We are unlucky and hit a dangling branch straight away.
++		 * Now we do not really know where to go to find the needed
++		 * branch - to the left or to the right. Well, let's try left.
++		 */
++		unsure = 1;
++	} else if (!adding)
++		unsure = 1; /* Remove a dangling branch wherever it is */
++
++	if (cmp == NAME_GREATER || unsure) {
++		/* Look left */
++		while (1) {
++			err = tnc_prev(c, zn, n);
++			if (err == -ENOENT) {
++				ubifs_assert(*n == 0);
++				*n = -1;
++				break;
++			}
++			if (err < 0)
++				return err;
++			if (keys_cmp(c, &(*zn)->zbranch[*n].key, key)) {
++				/* See comments in 'resolve_collision()' */
++				if (*n == (*zn)->child_cnt - 1) {
++					err = tnc_next(c, zn, n);
++					if (err) {
++						/* Should be impossible */
++						ubifs_assert(0);
++						if (err == -ENOENT)
++							err = -EINVAL;
++						return err;
++					}
++					ubifs_assert(*n == 0);
++					*n = -1;
++				}
++				break;
++			}
++			err = fallible_matches_name(c, &(*zn)->zbranch[*n], nm);
++			if (err < 0)
++				return err;
++			if (err == NAME_MATCHES)
++				return 1;
++			if (err == NOT_ON_MEDIA) {
++				o_znode = *zn;
++				o_n = *n;
++				continue;
++			}
++			if (!adding)
++				continue;
++			if (err == NAME_LESS)
++				break;
++			else
++				unsure = 0;
++		}
++	}
++
++	if (cmp == NAME_LESS || unsure) {
++		/* Look right */
++		*zn = znode;
++		*n = nn;
++		while (1) {
++			err = tnc_next(c, &znode, &nn);
++			if (err == -ENOENT)
++				break;
++			if (err < 0)
++				return err;
++			if (keys_cmp(c, &znode->zbranch[nn].key, key))
++				break;
++			err = fallible_matches_name(c, &znode->zbranch[nn], nm);
++			if (err < 0)
++				return err;
++			if (err == NAME_GREATER)
++				break;
++			*zn = znode;
++			*n = nn;
++			if (err == NAME_MATCHES)
++				return 1;
++			if (err == NOT_ON_MEDIA) {
++				o_znode = znode;
++				o_n = nn;
++			}
++		}
++	}
++
++	/* Never match a dangling branch when adding */
++	if (adding || !o_znode)
++		return 0;
++
++	dbg_mnt("dangling match LEB %d:%d len %d %s",
++		o_znode->zbranch[o_n].lnum, o_znode->zbranch[o_n].offs,
++		o_znode->zbranch[o_n].len, DBGKEY(key));
++	*zn = o_znode;
++	*n = o_n;
++	return 1;
++}
++
++/**
++ * matches_position - determine if a zbranch matches a given position.
++ * @zbr: zbranch of dent
++ * @lnum: LEB number of dent to match
++ * @offs: offset of dent to match
++ *
++ * This function returns %1 if @lnum:@offs matches, and %0 otherwise.
++ */
++static int matches_position(struct ubifs_zbranch *zbr, int lnum, int offs)
++{
++	if (zbr->lnum == lnum && zbr->offs == offs)
++		return 1;
++	else
++		return 0;
++}
++
++/**
++ * resolve_collision_directly - resolve a collision directly.
++ * @c: UBIFS file-system description object
++ * @key: key of directory entry
++ * @zn: znode is passed and returned here
++ * @n: zbranch number is passed and returned here
++ * @lnum: LEB number of dent node to match
++ * @offs: offset of dent node to match
++ *
++ * This function is used for "hashed" keys to make sure the found directory or
++ * extended attribute entry node is what was looked for. It is used when the
++ * flash address of the right node is known (@lnum:@offs) which makes it much
++ * easier to resolve collisions (no need to read entries and match full
++ * names). This function returns %1 and sets @zn and @n if the collision is
++ * resolved, %0 if @lnum:@offs is not found and @zn and @n are set to the
++ * previous directory entry. Otherwise a negative error code is returned.
++ */
++static int resolve_collision_directly(struct ubifs_info *c,
++				      const union ubifs_key *key,
++				      struct ubifs_znode **zn, int *n,
++				      int lnum, int offs)
++{
++	struct ubifs_znode *znode;
++	int nn, err;
++
++	znode = *zn;
++	nn = *n;
++	if (matches_position(&znode->zbranch[nn], lnum, offs))
++		return 1;
++
++	/* Look left */
++	while (1) {
++		err = tnc_prev(c, &znode, &nn);
++		if (err == -ENOENT)
++			break;
++		if (err < 0)
++			return err;
++		if (keys_cmp(c, &znode->zbranch[nn].key, key))
++			break;
++		if (matches_position(&znode->zbranch[nn], lnum, offs)) {
++			*zn = znode;
++			*n = nn;
++			return 1;
++		}
++	}
++
++	/* Look right */
++	znode = *zn;
++	nn = *n;
++	while (1) {
++		err = tnc_next(c, &znode, &nn);
++		if (err == -ENOENT)
++			return 0;
++		if (err < 0)
++			return err;
++		if (keys_cmp(c, &znode->zbranch[nn].key, key))
++			return 0;
++		*zn = znode;
++		*n = nn;
++		if (matches_position(&znode->zbranch[nn], lnum, offs))
++			return 1;
++	}
++}
++
++/**
++ * dirty_cow_bottom_up - dirty a znode and its ancestors.
++ * @c: UBIFS file-system description object
++ * @znode: znode to dirty
++ *
++ * If we do not have a unique key that resides in a znode, then we cannot
++ * dirty that znode from the top down (i.e. by using lookup_level0_dirty)
++ * This function records the path back to the last dirty ancestor, and then
++ * dirties the znodes on that path.
++ */
++static struct ubifs_znode *dirty_cow_bottom_up(struct ubifs_info *c,
++					       struct ubifs_znode *znode)
++{
++	struct ubifs_znode *zp;
++	int *path = c->bottom_up_buf, p = 0;
++
++	ubifs_assert(c->zroot.znode);
++	ubifs_assert(znode);
++	if (c->zroot.znode->level > BOTTOM_UP_HEIGHT) {
++		kfree(c->bottom_up_buf);
++		c->bottom_up_buf = kmalloc(c->zroot.znode->level * sizeof(int),
++					   GFP_NOFS);
++		if (!c->bottom_up_buf)
++			return ERR_PTR(-ENOMEM);
++		path = c->bottom_up_buf;
++	}
++	if (c->zroot.znode->level) {
++		/* Go up until parent is dirty */
++		while (1) {
++			int n;
++
++			zp = znode->parent;
++			if (!zp)
++				break;
++			n = znode->iip;
++			ubifs_assert(p < c->zroot.znode->level);
++			path[p++] = n;
++			if (!zp->cnext && ubifs_zn_dirty(znode))
++				break;
++			znode = zp;
++		}
++	}
++
++	/* Come back down, dirtying as we go */
++	while (1) {
++		struct ubifs_zbranch *zbr;
++
++		zp = znode->parent;
++		if (zp) {
++			ubifs_assert(path[p - 1] >= 0);
++			ubifs_assert(path[p - 1] < zp->child_cnt);
++			zbr = &zp->zbranch[path[--p]];
++			znode = dirty_cow_znode(c, zbr);
++		} else {
++			ubifs_assert(znode == c->zroot.znode);
++			znode = dirty_cow_znode(c, &c->zroot);
++		}
++		if (unlikely(IS_ERR(znode)) || !p)
++			break;
++		ubifs_assert(path[p - 1] >= 0);
++		ubifs_assert(path[p - 1] < znode->child_cnt);
++		znode = znode->zbranch[path[p - 1]].znode;
++	}
++
++	return znode;
++}
++
++/**
++ * ubifs_lookup_level0 - search for zero-level znode.
++ * @c: UBIFS file-system description object
++ * @key:  key to lookup
++ * @zn: znode is returned here
++ * @n: znode branch slot number is returned here
++ *
++ * This function looks up the TNC tree and search for zero-level znode which
++ * refers key @key. The found zero-level znode is returned in @zn. There are 3
++ * cases:
++ *   o exact match, i.e. the found zero-level znode contains key @key, then %1
++ *     is returned and slot number of the matched branch is stored in @n;
++ *   o not exact match, which means that zero-level znode does not contain
++ *     @key, then %0 is returned and slot number of the closed branch is stored
++ *     in  @n;
++ *   o @key is so small that it is even less than the lowest key of the
++ *     leftmost zero-level node, then %0 is returned and %0 is stored in @n.
++ *
++ * Note, when the TNC tree is traversed, some znodes may be absent, then this
++ * function reads corresponding indexing nodes and inserts them to TNC. In
++ * case of failure, a negative error code is returned.
++ */
++int ubifs_lookup_level0(struct ubifs_info *c, const union ubifs_key *key,
++			struct ubifs_znode **zn, int *n)
++{
++	int err, exact;
++	struct ubifs_znode *znode;
++	unsigned long time = get_seconds();
++
++	dbg_tnc("search key %s", DBGKEY(key));
++
++	znode = c->zroot.znode;
++	if (unlikely(!znode)) {
++		znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
++		if (IS_ERR(znode))
++			return PTR_ERR(znode);
++	}
++
++	znode->time = time;
++
++	while (1) {
++		struct ubifs_zbranch *zbr;
++
++		exact = ubifs_search_zbranch(c, znode, key, n);
++
++		if (znode->level == 0)
++			break;
++
++		if (*n < 0)
++			*n = 0;
++		zbr = &znode->zbranch[*n];
++
++		if (zbr->znode) {
++			znode->time = time;
++			znode = zbr->znode;
++			continue;
++		}
++
++		/* znode is not in TNC cache, load it from the media */
++		znode = ubifs_load_znode(c, zbr, znode, *n);
++		if (IS_ERR(znode))
++			return PTR_ERR(znode);
++	}
++
++	*zn = znode;
++	if (exact || !is_hash_key(c, key) || *n != -1) {
++		dbg_tnc("found %d, lvl %d, n %d", exact, znode->level, *n);
++		return exact;
++	}
++
++	/*
++	 * Here is a tricky place. We have not found the key and this is a
++	 * "hashed" key, which may collide. The rest of the code deals with
++	 * situations like this:
++	 *
++	 *                  | 3 | 5 |
++	 *                  /       \
++	 *          | 3 | 5 |      | 6 | 7 | (x)
++	 *
++	 * Or more a complex example:
++	 *
++	 *                | 1 | 5 |
++	 *                /       \
++	 *       | 1 | 3 |         | 5 | 8 |
++	 *              \           /
++	 *          | 5 | 5 |   | 6 | 7 | (x)
++	 *
++	 * In the examples, if we are looking for key "5", we may reach nodes
++	 * marked with "(x)". In this case what we have do is to look at the
++	 * left and see if there is "5" key there. If there is, we have to
++	 * return it.
++	 *
++	 * Note, this whole situation is possible because we allow to have
++	 * elements which are equivalent to the next key in the parent in the
++	 * children of current znode. For example, this happens if we split a
++	 * znode like this: | 3 | 5 | 5 | 6 | 7 |, which results in something
++	 * like this:
++	 *                      | 3 | 5 |
++	 *                       /     \
++	 *                | 3 | 5 |   | 5 | 6 | 7 |
++	 *                              ^
++	 * And this becomes what is at the first "picture" after key "5" marked
++	 * with "^" is removed. What could be done is we could prohibit
++	 * splitting in the middle of the colliding sequence. Also, when
++	 * removing the leftmost key, we would have to correct the key of the
++	 * parent node, which would introduce additional complications. Namely,
++	 * if we changed the the leftmost key of the parent znode, the garbage
++	 * collector would be unable to find it (GC is doing this when GC'ing
++	 * indexing LEBs). Although we already have an additional RB-tree where
++	 * we save such changed znodes (see 'ins_clr_old_idx_znode()') until
++	 * after the commit. But anyway, this does not look easy to implement
++	 * so we did not try this.
++	 */
++	err = tnc_prev(c, &znode, n);
++	if (err == -ENOENT) {
++		dbg_tnc("found 0, lvl %d, n -1", znode->level);
++		*n = -1;
++		return 0;
++	}
++	if (unlikely(err < 0))
++		return err;
++	if (keys_cmp(c, key, &znode->zbranch[*n].key)) {
++		dbg_tnc("found 0, lvl %d, n -1", znode->level);
++		*n = -1;
++		return 0;
++	}
++
++	dbg_tnc("found 1, lvl %d, n %d", znode->level, *n);
++	*zn = znode;
++	return 1;
++}
++
++/**
++ * lookup_level0_dirty - search for zero-level znode dirtying.
++ * @c: UBIFS file-system description object
++ * @key:  key to lookup
++ * @zn: znode is returned here
++ * @n: znode branch slot number is returned here
++ *
++ * This function looks up the TNC tree and search for zero-level znode which
++ * refers key @key. The found zero-level znode is returned in @zn. There are 3
++ * cases:
++ *   o exact match, i.e. the found zero-level znode contains key @key, then %1
++ *     is returned and slot number of the matched branch is stored in @n;
++ *   o not exact match, which means that zero-level znode does not contain @key
++ *     then %0 is returned and slot number of the closed branch is stored in
++ *     @n;
++ *   o @key is so small that it is even less than the lowest key of the
++ *     leftmost zero-level node, then %0 is returned and %-1 is stored in @n.
++ *
++ * Additionally all znodes in the path from the root to the located zero-level
++ * znode are marked as dirty.
++ *
++ * Note, when the TNC tree is traversed, some znodes may be absent, then this
++ * function reads corresponding indexing nodes and inserts them to TNC. In
++ * case of failure, a negative error code is returned.
++ */
++static int lookup_level0_dirty(struct ubifs_info *c, const union ubifs_key *key,
++			       struct ubifs_znode **zn, int *n)
++{
++	int err, exact;
++	struct ubifs_znode *znode;
++	unsigned long time = get_seconds();
++
++	dbg_tnc("search and dirty key %s", DBGKEY(key));
++
++	znode = c->zroot.znode;
++	if (unlikely(!znode)) {
++		znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
++		if (IS_ERR(znode))
++			return PTR_ERR(znode);
++	}
++
++	znode = dirty_cow_znode(c, &c->zroot);
++	if (IS_ERR(znode))
++		return PTR_ERR(znode);
++
++	znode->time = time;
++
++	while (1) {
++		struct ubifs_zbranch *zbr;
++
++		exact = ubifs_search_zbranch(c, znode, key, n);
++
++		if (znode->level == 0)
++			break;
++
++		if (*n < 0)
++			*n = 0;
++		zbr = &znode->zbranch[*n];
++
++		if (zbr->znode) {
++			znode->time = time;
++			znode = dirty_cow_znode(c, zbr);
++			if (IS_ERR(znode))
++				return PTR_ERR(znode);
++			continue;
++		}
++
++		/* znode is not in TNC cache, load it from the media */
++		znode = ubifs_load_znode(c, zbr, znode, *n);
++		if (IS_ERR(znode))
++			return PTR_ERR(znode);
++		znode = dirty_cow_znode(c, zbr);
++		if (IS_ERR(znode))
++			return PTR_ERR(znode);
++	}
++
++	*zn = znode;
++	if (exact || !is_hash_key(c, key) || *n != -1) {
++		dbg_tnc("found %d, lvl %d, n %d", exact, znode->level, *n);
++		return exact;
++	}
++
++	/*
++	 * See huge comment at 'lookup_level0_dirty()' what is the rest of the
++	 * code.
++	 */
++	err = tnc_prev(c, &znode, n);
++	if (err == -ENOENT) {
++		*n = -1;
++		dbg_tnc("found 0, lvl %d, n -1", znode->level);
++		return 0;
++	}
++	if (unlikely(err < 0))
++		return err;
++	if (keys_cmp(c, key, &znode->zbranch[*n].key)) {
++		*n = -1;
++		dbg_tnc("found 0, lvl %d, n -1", znode->level);
++		return 0;
++	}
++
++	if (znode->cnext || !ubifs_zn_dirty(znode)) {
++		znode = dirty_cow_bottom_up(c, znode);
++		if (IS_ERR(znode))
++			return PTR_ERR(znode);
++	}
++
++	dbg_tnc("found 1, lvl %d, n %d", znode->level, *n);
++	*zn = znode;
++	return 1;
++}
++
++/**
++ * ubifs_tnc_lookup - look up a file-system node.
++ * @c: UBIFS file-system description object
++ * @key: node key to lookup
++ * @node: the node is returned here
++ *
++ * This function look up and reads node with key @key. The caller has to make
++ * sure the @node buffer is large enough to fit the node. Returns zero in case
++ * of success, %-ENOENT if the node was not found, and a negative error code in
++ * case of failure.
++ */
++int ubifs_tnc_lookup(struct ubifs_info *c, const union ubifs_key *key,
++		     void *node)
++{
++	int found, n, err;
++	struct ubifs_znode *znode;
++	struct ubifs_zbranch zbr, *zt;
++
++	mutex_lock(&c->tnc_mutex);
++	found = ubifs_lookup_level0(c, key, &znode, &n);
++	if (!found) {
++		err = -ENOENT;
++		goto out;
++	} else if (found < 0) {
++		err = found;
++		goto out;
++	}
++	zt = &znode->zbranch[n];
++	if (is_hash_key(c, key)) {
++		/*
++		 * In this case the leaf node cache gets used, so we pass the
++		 * address of the zbranch and keep the mutex locked
++		 */
++		err = tnc_read_node_nm(c, zt, node);
++		goto out;
++	}
++	zbr = znode->zbranch[n];
++	mutex_unlock(&c->tnc_mutex);
++
++	err = ubifs_tnc_read_node(c, &zbr, node);
++	return err;
++
++out:
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * ubifs_tnc_locate - look up a file-system node and return it and its location.
++ * @c: UBIFS file-system description object
++ * @key: node key to lookup
++ * @node: the node is returned here
++ * @lnum: LEB number is returned here
++ * @offs: offset is returned here
++ *
++ * This function is the same as 'ubifs_tnc_lookup()' but it returns the node
++ * location also. See 'ubifs_tnc_lookup()'.
++ */
++int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key,
++		     void *node, int *lnum, int *offs)
++{
++	int found, n, err;
++	struct ubifs_znode *znode;
++	struct ubifs_zbranch zbr, *zt;
++
++	mutex_lock(&c->tnc_mutex);
++	found = ubifs_lookup_level0(c, key, &znode, &n);
++	if (!found) {
++		err = -ENOENT;
++		goto out;
++	} else if (found < 0) {
++		err = found;
++		goto out;
++	}
++	zt = &znode->zbranch[n];
++	if (is_hash_key(c, key)) {
++		/*
++		 * In this case the leaf node cache gets used, so we pass the
++		 * address of the zbranch and keep the mutex locked
++		 */
++		*lnum = zt->lnum;
++		*offs = zt->offs;
++		err = tnc_read_node_nm(c, zt, node);
++		goto out;
++	}
++	zbr = znode->zbranch[n];
++	mutex_unlock(&c->tnc_mutex);
++
++	*lnum = zbr.lnum;
++	*offs = zbr.offs;
++
++	err = ubifs_tnc_read_node(c, &zbr, node);
++	return err;
++
++out:
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * do_lookup_nm- look up a "hashed" node.
++ * directory entry file-system node.
++ * @c: UBIFS file-system description object
++ * @key: node key to lookup
++ * @node: the node is returned here
++ * @nm: node name
++ *
++ * This function look up and reads a node which contains name hash in the key.
++ * Since the hash may have collisions, there may be many nodes with the same
++ * key, so we have to sequentially look to all of them until the needed one is
++ * found. This function returns zero in case of success, %-ENOENT if the node
++ * was not found, and a negative error code in case of failure.
++ */
++static int do_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
++			void *node, const struct qstr *nm)
++{
++	int found, n, err;
++	struct ubifs_znode *znode;
++	struct ubifs_zbranch zbr;
++
++	dbg_tnc("name '%.*s' key %s", nm->len, nm->name, DBGKEY(key));
++	mutex_lock(&c->tnc_mutex);
++	found = ubifs_lookup_level0(c, key, &znode, &n);
++	if (!found) {
++		err = -ENOENT;
++		goto out_unlock;
++	} else if (found < 0) {
++		err = found;
++		goto out_unlock;
++	}
++
++	ubifs_assert(n >= 0);
++
++	err = resolve_collision(c, key, &znode, &n, nm);
++	dbg_tnc("rc returned %d, znode %p, n %d", err, znode, n);
++	if (unlikely(err < 0))
++		goto out_unlock;
++	if (err == 0) {
++		err = -ENOENT;
++		goto out_unlock;
++	}
++
++	zbr = znode->zbranch[n];
++	mutex_unlock(&c->tnc_mutex);
++
++	err = tnc_read_node_nm(c, &zbr, node);
++	return err;
++
++out_unlock:
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * ubifs_tnc_lookup_nm- look up a "hashed" node.
++ * directory entry file-system node.
++ * @c: UBIFS file-system description object
++ * @key: node key to lookup
++ * @node: the node is returned here
++ * @nm: node name
++ *
++ * This function look up and reads a node which contains name hash in the key.
++ * Since the hash may have collisions, there may be many nodes with the same
++ * key, so we have to sequentially look to all of them until the needed one is
++ * found. This function returns zero in case of success, %-ENOENT if the node
++ * was not found, and a negative error code in case of failure.
++ */
++int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
++			void *node, const struct qstr *nm)
++{
++	int err, len;
++	const struct ubifs_dent_node *dent = node;
++
++	/*
++	 * We assume that in most of the cases there are no name collisions and
++	 * 'ubifs_tnc_lookup()' returns us the right direntry.
++	 */
++	err = ubifs_tnc_lookup(c, key, node);
++	if (err)
++		return err;
++
++	len = le16_to_cpu(dent->nlen);
++	if (nm->len == len && !memcmp(dent->name, nm->name, len))
++		return 0;
++
++	/*
++	 * Unluckily, there are hash collisions and we have to iterate over
++	 * them look at each direntry with colliding name hash sequentially.
++	 */
++	return do_lookup_nm(c, key, node, nm);
++}
++
++/**
++ * correct_parent_keys - correct parent znodes' keys.
++ * @c: UBIFS file-system description object
++ * @znode: znode to correct parent znodes for
++ *
++ * This is a helper function for 'tnc_insert()'. When the key of the leftmost
++ * zbranch changes, keys of parent znodes have to be corrected. This helper
++ * function is called in such situations and corrects the keys if needed.
++ */
++static void correct_parent_keys(const struct ubifs_info *c,
++				struct ubifs_znode *znode)
++{
++	union ubifs_key *key, *key1;
++
++	ubifs_assert(znode->parent);
++	ubifs_assert(znode->iip == 0);
++
++	key = &znode->zbranch[0].key;
++	key1 = &znode->parent->zbranch[0].key;
++
++	while (keys_cmp(c, key, key1) < 0) {
++		key_copy(c, key, key1);
++		znode = znode->parent;
++		if (!znode->parent || znode->iip)
++			break;
++		key1 = &znode->parent->zbranch[0].key;
++	}
++}
++
++/**
++ * insert_zbranch - insert a zbranch into a znode.
++ * @znode: znode into which to insert
++ * @zbr: zbranch to insert
++ * @n: slot number to insert to
++ *
++ * This is a helper function for 'tnc_insert()'. UBIFS does not allow "gaps" in
++ * znode's array of zbranches and keeps zbranches consolidated, so when a new
++ * zbranch has to be inserted to the @znode->zbranches[]' array at the @n-th
++ * slot, zbranches starting from @n have to be moved right.
++ */
++static void insert_zbranch(struct ubifs_znode *znode,
++			   const struct ubifs_zbranch *zbr, int n)
++{
++	int i;
++
++	ubifs_assert(ubifs_zn_dirty(znode));
++
++	if (znode->level) {
++		for (i = znode->child_cnt; i > n; i--) {
++			znode->zbranch[i] = znode->zbranch[i - 1];
++			if (znode->zbranch[i].znode)
++				znode->zbranch[i].znode->iip = i;
++		}
++		if (zbr->znode)
++			zbr->znode->iip = n;
++	} else
++		for (i = znode->child_cnt; i > n; i--)
++			znode->zbranch[i] = znode->zbranch[i - 1];
++
++	znode->zbranch[n] = *zbr;
++	znode->child_cnt += 1;
++
++	/*
++	 * After inserting at slot zero, the lower bound of the key range of
++	 * this znode may have changed. If this znode is subsequently split
++	 * then the upper bound of the key range may change, and furthermore
++	 * it could change to be lower than the original lower bound. If that
++	 * happens, then it will no longer be possible to find this znode in the
++	 * TNC using the key from the index node on flash. That is bad because
++	 * if it is not found, we will assume it is obsolete and may overwrite
++	 * it. Then if there is an unclean unmount, we will start using the
++	 * old index which will be broken.
++	 *
++	 * So we first mark znodes that have insertions at slot zero, and then
++	 * if they are split we add their lnum/offs to the old_idx tree.
++	 */
++	if (n == 0)
++		znode->alt = 1;
++}
++
++/**
++ * tnc_insert - insert a node into TNC.
++ * @c: UBIFS file-system description object
++ * @znode: znode to insert into
++ * @zbr: branch to insert
++ * @n: slot number to insert new zbranch to
++ *
++ * This function inserts a new node described by @zbr into znode @znode. If
++ * znode does not have a free slot for new zbranch, it is split. Parent znodes
++ * are splat as well if needed. Returns zero in case of success or a negative
++ * error code in case of failure.
++ */
++static int tnc_insert(struct ubifs_info *c, struct ubifs_znode *znode,
++		      struct ubifs_zbranch *zbr, int n)
++{
++	struct ubifs_znode *zn, *zi, *zp;
++	int i, keep, move, appending = 0;
++	union ubifs_key *key = &zbr->key;
++
++	ubifs_assert(n >= 0 && n <= c->fanout);
++
++	/* Implement naive insert for now */
++again:
++	zp = znode->parent;
++	if (znode->child_cnt < c->fanout) {
++		ubifs_assert(n != c->fanout);
++		dbg_tnc("inserted at %d level %d, key %s", n, znode->level,
++			DBGKEY(key));
++
++		insert_zbranch(znode, zbr, n);
++
++		/* Ensure parent's key is correct */
++		if (n == 0 && zp && znode->iip == 0)
++			correct_parent_keys(c, znode);
++
++		return 0;
++	}
++
++	/*
++	 * Unfortunately, @znode does not have more empty slots and we have to
++	 * split it.
++	 */
++	dbg_tnc("splitting level %d, key %s", znode->level, DBGKEY(key));
++
++	if (znode->alt)
++		/*
++		 * We can no longer be sure of finding this znode by key, so we
++		 * record it in the old_idx tree.
++		 */
++		ins_clr_old_idx_znode(c, znode);
++
++	zn = kzalloc(c->max_znode_sz, GFP_NOFS);
++	if (!zn)
++		return -ENOMEM;
++	zn->parent = zp;
++	zn->level = znode->level;
++
++	/* Decide where to split */
++	if (znode->level == 0 && n == c->fanout &&
++	    key_type(c, key) == UBIFS_DATA_KEY) {
++		union ubifs_key *key1;
++
++		/*
++		 * If this is an inode which is being appended - do not split
++		 * it because no other zbranches can be inserted between
++		 * zbranches of consecutive data nodes anyway.
++		 */
++		key1 = &znode->zbranch[n - 1].key;
++		if (key_inum(c, key1) == key_inum(c, key) &&
++		    key_type(c, key1) == UBIFS_DATA_KEY &&
++		    key_block(c, key1) == key_block(c, key) - 1)
++			appending = 1;
++	}
++
++	if (appending) {
++		keep = c->fanout;
++		move = 0;
++	} else {
++		keep = (c->fanout + 1) / 2;
++		move = c->fanout - keep;
++	}
++
++	/*
++	 * Although we don't at present, we could look at the neighbors and see
++	 * if we can move some zbranches there.
++	 */
++
++	if (n < keep) {
++		/* Insert into existing znode */
++		zi = znode;
++		move += 1;
++		keep -= 1;
++	} else {
++		/* Insert into new znode */
++		zi = zn;
++		n -= keep;
++		/* Re-parent */
++		if (zn->level != 0)
++			zbr->znode->parent = zn;
++	}
++
++	__set_bit(DIRTY_ZNODE, &zn->flags);
++	atomic_long_inc(&c->dirty_zn_cnt);
++
++	zn->child_cnt = move;
++	znode->child_cnt = keep;
++
++	dbg_tnc("moving %d, keeping %d", move, keep);
++
++	/* Move zbranch */
++	for (i = 0; i < move; i++) {
++		zn->zbranch[i] = znode->zbranch[keep + i];
++		/* Re-parent */
++		if (zn->level != 0)
++			if (zn->zbranch[i].znode) {
++				zn->zbranch[i].znode->parent = zn;
++				zn->zbranch[i].znode->iip = i;
++			}
++	}
++
++	/* Insert new key and branch */
++	dbg_tnc("inserting at %d level %d, key %s", n, zn->level, DBGKEY(key));
++
++	insert_zbranch(zi, zbr, n);
++
++	/* Insert new znode (produced by spitting) into the parent */
++	if (zp) {
++		i = n;
++		/* Locate insertion point */
++		n = znode->iip + 1;
++		if (appending && n != c->fanout)
++			appending = 0;
++
++		if (i == 0 && zi == znode && znode->iip == 0)
++			correct_parent_keys(c, znode);
++
++		/* Tail recursion */
++		zbr->key = zn->zbranch[0].key;
++		zbr->znode = zn;
++		zbr->lnum = 0;
++		zbr->offs = 0;
++		zbr->len = 0;
++		znode = zp;
++
++		goto again;
++	}
++
++	/* We have to split root znode */
++	dbg_tnc("creating new zroot at level %d", znode->level + 1);
++
++	zi = kzalloc(c->max_znode_sz, GFP_NOFS);
++	if (!zi)
++		return -ENOMEM;
++
++	zi->child_cnt = 2;
++	zi->level = znode->level + 1;
++
++	__set_bit(DIRTY_ZNODE, &zi->flags);
++	atomic_long_inc(&c->dirty_zn_cnt);
++
++	zi->zbranch[0].key = znode->zbranch[0].key;
++	zi->zbranch[0].znode = znode;
++	zi->zbranch[0].lnum = c->zroot.lnum;
++	zi->zbranch[0].offs = c->zroot.offs;
++	zi->zbranch[0].len = c->zroot.len;
++	zi->zbranch[1].key = zn->zbranch[0].key;
++	zi->zbranch[1].znode = zn;
++
++	c->zroot.lnum = 0;
++	c->zroot.offs = 0;
++	c->zroot.len = 0;
++	c->zroot.znode = zi;
++
++	zn->parent = zi;
++	zn->iip = 1;
++	znode->parent = zi;
++	znode->iip = 0;
++
++	return 0;
++}
++
++/**
++ * ubifs_tnc_add - add a node to TNC.
++ * @c: UBIFS file-system description object
++ * @key: key to add
++ * @lnum: LEB number of node
++ * @offs: node offset
++ * @len: node length
++ *
++ * This function adds a node with key @key to TNC. The node may be new or it may
++ * obsolete some existing one. Returns %0 on success or negative error code on
++ * failure.
++ */
++int ubifs_tnc_add(struct ubifs_info *c, const union ubifs_key *key, int lnum,
++		  int offs, int len)
++{
++	int found, n, err = 0;
++	struct ubifs_znode *znode;
++
++	mutex_lock(&c->tnc_mutex);
++	dbg_tnc("%d:%d, len %d, key %s", lnum, offs, len, DBGKEY(key));
++	found = lookup_level0_dirty(c, key, &znode, &n);
++	if (!found) {
++		struct ubifs_zbranch zbr;
++
++		zbr.znode = NULL;
++		zbr.lnum = lnum;
++		zbr.offs = offs;
++		zbr.len = len;
++		key_copy(c, key, &zbr.key);
++		err = tnc_insert(c, znode, &zbr, n + 1);
++	} else if (found == 1) {
++		struct ubifs_zbranch *zbr = &znode->zbranch[n];
++
++		lnc_free(zbr);
++		err = ubifs_add_dirt(c, zbr->lnum, zbr->len);
++		zbr->lnum = lnum;
++		zbr->offs = offs;
++		zbr->len = len;
++	} else
++		err = found;
++	if (!err)
++		err = dbg_check_tnc(c, 0);
++	mutex_unlock(&c->tnc_mutex);
++
++	return err;
++}
++
++/**
++ * ubifs_tnc_replace - replace a node in the TNC only if the old node is found.
++ * @c: UBIFS file-system description object
++ * @key: key to add
++ * @old_lnum: LEB number of old node
++ * @old_offs: old node offset
++ * @lnum: LEB number of node
++ * @offs: node offset
++ * @len: node length
++ *
++ * This function replaces a node with key @key in the TNC only if the old node
++ * is found.  This function is called by garbage collection when node are moved.
++ * Returns %0 on success or negative error code on failure.
++ */
++int ubifs_tnc_replace(struct ubifs_info *c, const union ubifs_key *key,
++		      int old_lnum, int old_offs, int lnum, int offs, int len)
++{
++	int found, n, err = 0;
++	struct ubifs_znode *znode;
++
++	mutex_lock(&c->tnc_mutex);
++	dbg_tnc("old LEB %d:%d, new LEB %d:%d, len %d, key %s", old_lnum,
++		old_offs, lnum, offs, len, DBGKEY(key));
++	found = lookup_level0_dirty(c, key, &znode, &n);
++	if (found < 0) {
++		err = found;
++		goto out_unlock;
++	}
++
++	if (found == 1) {
++		struct ubifs_zbranch *zbr = &znode->zbranch[n];
++
++		found = 0;
++		if (zbr->lnum == old_lnum && zbr->offs == old_offs) {
++			lnc_free(zbr);
++			err = ubifs_add_dirt(c, zbr->lnum, zbr->len);
++			if (err)
++				goto out_unlock;
++			zbr->lnum = lnum;
++			zbr->offs = offs;
++			zbr->len = len;
++			found = 1;
++		} else if (is_hash_key(c, key)) {
++			found = resolve_collision_directly(c, key, &znode, &n,
++							   old_lnum, old_offs);
++			dbg_tnc("rc returned %d, znode %p, n %d, LEB %d:%d",
++				found, znode, n, old_lnum, old_offs);
++			if (found < 0) {
++				err = found;
++				goto out_unlock;
++			}
++
++			if (found) {
++				/* Ensure the znode is dirtied */
++				if (znode->cnext || !ubifs_zn_dirty(znode)) {
++					    znode = dirty_cow_bottom_up(c,
++									znode);
++					    if (IS_ERR(znode)) {
++						    err = PTR_ERR(znode);
++						    goto out_unlock;
++					    }
++				}
++				zbr = &znode->zbranch[n];
++				lnc_free(zbr);
++				err = ubifs_add_dirt(c, zbr->lnum,
++						     zbr->len);
++				if (err)
++					goto out_unlock;
++				zbr->lnum = lnum;
++				zbr->offs = offs;
++				zbr->len = len;
++			}
++		}
++	}
++
++	if (!found)
++		err = ubifs_add_dirt(c, lnum, len);
++
++	if (!err)
++		err = dbg_check_tnc(c, 0);
++
++out_unlock:
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * ubifs_tnc_add_nm - add a "hashed" node to TNC.
++ * @c: UBIFS file-system description object
++ * @key: key to add
++ * @lnum: LEB number of node
++ * @offs: node offset
++ * @len: node length
++ * @nm: node name
++ *
++ * This is the same as 'ubifs_tnc_add()' but it should be used with keys which
++ * may have collisions, like directory entry keys.
++ */
++int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key,
++		     int lnum, int offs, int len, const struct qstr *nm)
++{
++	int found, n, err = 0;
++	struct ubifs_znode *znode;
++
++	mutex_lock(&c->tnc_mutex);
++	dbg_tnc("LEB %d:%d, name '%.*s', key %s", lnum, offs, nm->len, nm->name,
++		DBGKEY(key));
++	found = lookup_level0_dirty(c, key, &znode, &n);
++	if (found < 0) {
++		err = found;
++		goto out_unlock;
++	}
++
++	if (found == 1) {
++		if (c->replaying)
++			found = fallible_resolve_collision(c, key, &znode, &n,
++							   nm, 1);
++		else
++			found = resolve_collision(c, key, &znode, &n, nm);
++		dbg_tnc("rc returned %d, znode %p, n %d", found, znode, n);
++		if (found < 0) {
++			err = found;
++			goto out_unlock;
++		}
++
++		/* Ensure the znode is dirtied */
++		if (znode->cnext || !ubifs_zn_dirty(znode)) {
++			    znode = dirty_cow_bottom_up(c, znode);
++			    if (IS_ERR(znode)) {
++				    err = PTR_ERR(znode);
++				    goto out_unlock;
++			    }
++		}
++
++		if (found == 1) {
++			struct ubifs_zbranch *zbr = &znode->zbranch[n];
++
++			lnc_free(zbr);
++			err = ubifs_add_dirt(c, zbr->lnum, zbr->len);
++			zbr->lnum = lnum;
++			zbr->offs = offs;
++			zbr->len = len;
++			goto out_unlock;
++		}
++	}
++
++	if (!found) {
++		struct ubifs_zbranch zbr;
++
++		zbr.znode = NULL;
++		zbr.lnum = lnum;
++		zbr.offs = offs;
++		zbr.len = len;
++		key_copy(c, key, &zbr.key);
++		err = tnc_insert(c, znode, &zbr, n + 1);
++		if (err)
++			goto out_unlock;
++		if (c->replaying && c->replay_sqnum < c->cs_sqnum) {
++			/*
++			 * This node was moved by garbage collection. We can
++			 * tell because it is in the journal but it has a
++			 * sequence number earlier than the last commit-start.
++			 * We did not find it in the index so there may be a
++			 * dangling branch still in the index. So we remove it
++			 * by passing 'ubifs_tnc_remove_nm()' the same key but
++			 * an unmatchable name.
++			 */
++			struct qstr noname = { .len = 0, .name = "" };
++
++			err = dbg_check_tnc(c, 0);
++			mutex_unlock(&c->tnc_mutex);
++			if (err)
++				return err;
++			return ubifs_tnc_remove_nm(c, key, &noname);
++		}
++	}
++
++out_unlock:
++	if (!err)
++		err = dbg_check_tnc(c, 0);
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * tnc_delete - delete a znode form TNC.
++ * @c: UBIFS file-system description object
++ * @znode: znode to delete from
++ * @n: zbranch slot number to delete
++ *
++ * This function deletes a leaf node from @n-th slot of @znode. Returns zero in
++ * case of success and a negative error code in case of failure.
++ */
++static int tnc_delete(struct ubifs_info *c, struct ubifs_znode *znode, int n)
++{
++	struct ubifs_zbranch *zbr;
++	struct ubifs_znode *zp;
++	int i, err;
++
++	/* Delete without merge for now */
++	ubifs_assert(znode->level == 0);
++	ubifs_assert(n >= 0 && n < c->fanout);
++	dbg_tnc("deleting %s", DBGKEY(&znode->zbranch[n].key));
++
++	zbr = &znode->zbranch[n];
++	lnc_free(zbr);
++
++	err = ubifs_add_dirt(c, zbr->lnum, zbr->len);
++	if (err) {
++		dbg_dump_znode(c, znode);
++		return err;
++	}
++
++	/* We do not "gap" zbranch slots */
++	for (i = n; i < znode->child_cnt - 1; i++)
++		znode->zbranch[i] = znode->zbranch[i + 1];
++	znode->child_cnt -= 1;
++
++	if (znode->child_cnt > 0)
++		return 0;
++
++	/*
++	 * This was the last zbranch, we have to delete this znode from the
++	 * parent.
++	 */
++
++	do {
++		ubifs_assert(!test_bit(OBSOLETE_ZNODE, &znode->flags));
++		ubifs_assert(ubifs_zn_dirty(znode));
++
++		zp = znode->parent;
++		n = znode->iip;
++
++		atomic_long_dec(&c->dirty_zn_cnt);
++
++		err = insert_old_idx_znode(c, znode);
++		if (err)
++			return err;
++
++		if (znode->cnext) {
++			__set_bit(OBSOLETE_ZNODE, &znode->flags);
++			atomic_long_inc(&c->clean_zn_cnt);
++			atomic_long_inc(&ubifs_clean_zn_cnt);
++		} else
++			kfree(znode);
++		znode = zp;
++	} while (znode->child_cnt == 1); /* while removing last child */
++
++	/* Remove from znode, entry n - 1 */
++	znode->child_cnt -= 1;
++	ubifs_assert(znode->level != 0);
++	for (i = n; i < znode->child_cnt; i++) {
++		znode->zbranch[i] = znode->zbranch[i + 1];
++		if (znode->zbranch[i].znode)
++			znode->zbranch[i].znode->iip = i;
++	}
++
++	/*
++	 * If this is the root and it has only 1 child then
++	 * collapse the tree.
++	 */
++	if (!znode->parent) {
++		while (znode->child_cnt == 1 && znode->level != 0) {
++			zp = znode;
++			zbr = &znode->zbranch[0];
++			znode = get_znode(c, znode, 0);
++			if (IS_ERR(znode))
++				return PTR_ERR(znode);
++			znode = dirty_cow_znode(c, zbr);
++			if (IS_ERR(znode))
++				return PTR_ERR(znode);
++			znode->parent = NULL;
++			znode->iip = 0;
++			if (c->zroot.len) {
++				err = insert_old_idx(c, c->zroot.lnum,
++						     c->zroot.offs);
++				if (err)
++					return err;
++			}
++			c->zroot.lnum = zbr->lnum;
++			c->zroot.offs = zbr->offs;
++			c->zroot.len = zbr->len;
++			c->zroot.znode = znode;
++			ubifs_assert(!test_bit(OBSOLETE_ZNODE,
++				     &zp->flags));
++			ubifs_assert(test_bit(DIRTY_ZNODE, &zp->flags));
++			atomic_long_dec(&c->dirty_zn_cnt);
++
++			if (zp->cnext) {
++				__set_bit(OBSOLETE_ZNODE, &zp->flags);
++				atomic_long_inc(&c->clean_zn_cnt);
++				atomic_long_inc(&ubifs_clean_zn_cnt);
++			} else
++				kfree(zp);
++		}
++	}
++
++	return 0;
++}
++
++/**
++ * ubifs_tnc_remove - remove an index entry of a node.
++ * @c: UBIFS file-system description object
++ * @key: key of node
++ *
++ * Returns %0 on success or negative error code on failure.
++ */
++int ubifs_tnc_remove(struct ubifs_info *c, const union ubifs_key *key)
++{
++	int found, n, err = 0;
++	struct ubifs_znode *znode;
++
++	mutex_lock(&c->tnc_mutex);
++	dbg_tnc("key %s", DBGKEY(key));
++	found = lookup_level0_dirty(c, key, &znode, &n);
++	if (found < 0) {
++		err = found;
++		goto out_unlock;
++	}
++	if (found == 1)
++		err = tnc_delete(c, znode, n);
++	if (!err)
++		err = dbg_check_tnc(c, 0);
++
++out_unlock:
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * ubifs_tnc_remove_nm - remove an index entry for a "hashed" node.
++ * @c: UBIFS file-system description object
++ * @key: key of node
++ * @nm: directory entry name
++ *
++ * Returns %0 on success or negative error code on failure.
++ */
++int ubifs_tnc_remove_nm(struct ubifs_info *c, const union ubifs_key *key,
++			const struct qstr *nm)
++{
++	int n, err;
++	struct ubifs_znode *znode;
++
++	mutex_lock(&c->tnc_mutex);
++	dbg_tnc("%.*s, key %s", nm->len, nm->name, DBGKEY(key));
++	err = lookup_level0_dirty(c, key, &znode, &n);
++	if (err < 0)
++		goto out_unlock;
++
++	if (err) {
++		if (c->replaying)
++			err = fallible_resolve_collision(c, key, &znode, &n,
++							 nm, 0);
++		else
++			err = resolve_collision(c, key, &znode, &n, nm);
++		dbg_tnc("rc returned %d, znode %p, n %d", err, znode, n);
++		if (err < 0)
++			goto out_unlock;
++		if (err) {
++			/* Ensure the znode is dirtied */
++			if (znode->cnext || !ubifs_zn_dirty(znode)) {
++				    znode = dirty_cow_bottom_up(c, znode);
++				    if (IS_ERR(znode)) {
++					    err = PTR_ERR(znode);
++					    goto out_unlock;
++				    }
++			}
++			err = tnc_delete(c, znode, n);
++		}
++	}
++
++out_unlock:
++	if (!err)
++		err = dbg_check_tnc(c, 0);
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * key_in_range - determine if a key falls within a range of keys.
++ * @c: UBIFS file-system description object
++ * @key: key to check
++ * @from_key: lowest key in range
++ * @to_key: highest key in range
++ *
++ * This function returns %1 if the key is in range and %0 otherwise.
++ */
++static int key_in_range(struct ubifs_info *c, union ubifs_key *key,
++			union ubifs_key *from_key, union ubifs_key *to_key)
++{
++	if (keys_cmp(c, key, from_key) < 0)
++		return 0;
++	if (keys_cmp(c, key, to_key) > 0)
++		return 0;
++	return 1;
++}
++
++/**
++ * ubifs_tnc_remove_range - remove index entries in range.
++ * @c: UBIFS file-system description object
++ * @from_key: lowest key to remove
++ * @to_key: highest key to remove
++ *
++ * This function removes index entries starting at @from_key and ending at
++ * @to_key.  This function returns zero in case of success and a negative error
++ * code in case of failure.
++ */
++int ubifs_tnc_remove_range(struct ubifs_info *c, union ubifs_key *from_key,
++			   union ubifs_key *to_key)
++{
++	int i, n, k, err = 0;
++	struct ubifs_znode *znode;
++	union ubifs_key *key;
++
++	mutex_lock(&c->tnc_mutex);
++	while (1) {
++		/* Find first level 0 znode that contains keys to remove */
++		err = ubifs_lookup_level0(c, from_key, &znode, &n);
++		if (err < 0)
++			goto out_unlock;
++
++		if (err)
++			key = from_key;
++		else {
++			err = tnc_next(c, &znode, &n);
++			if (err == -ENOENT) {
++				err = 0;
++				goto out_unlock;
++			}
++			if (err < 0)
++				goto out_unlock;
++			key = &znode->zbranch[n].key;
++			if (!key_in_range(c, key, from_key, to_key)) {
++				err = 0;
++				goto out_unlock;
++			}
++		}
++
++		/* Ensure the znode is dirtied */
++		if (znode->cnext || !ubifs_zn_dirty(znode)) {
++			    znode = dirty_cow_bottom_up(c, znode);
++			    if (IS_ERR(znode)) {
++				    err = PTR_ERR(znode);
++				    goto out_unlock;
++			    }
++		}
++
++		/* Remove all keys in range except the first */
++		for (i = n + 1, k = 0; i < znode->child_cnt; i++, k++) {
++			key = &znode->zbranch[i].key;
++			if (!key_in_range(c, key, from_key, to_key))
++				break;
++			lnc_free(&znode->zbranch[i]);
++			err = ubifs_add_dirt(c, znode->zbranch[i].lnum,
++					     znode->zbranch[i].len);
++			if (err) {
++				dbg_dump_znode(c, znode);
++				goto out_unlock;
++			}
++			dbg_tnc("removing %s", DBGKEY(key));
++		}
++		if (k) {
++			for (i = n + 1 + k; i < znode->child_cnt; i++)
++				znode->zbranch[i - k] = znode->zbranch[i];
++			znode->child_cnt -= k;
++		}
++
++		/* Now delete the first */
++		err = tnc_delete(c, znode, n);
++		if (err)
++			goto out_unlock;
++	}
++
++out_unlock:
++	if (!err)
++		err = dbg_check_tnc(c, 0);
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * ubifs_tnc_remove_ino - remove an inode from TNC.
++ * @c: UBIFS file-system description object
++ * @inum: inode number to remove
++ *
++ * This function remove inode @inum and all the extended attributes associated
++ * with the anode from TNC and returns zero in case of success or a negative
++ * error code in case of failure.
++ */
++int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum)
++{
++	union ubifs_key key1, key2;
++	struct ubifs_dent_node *xent, *pxent = NULL;
++	struct qstr nm = { .name = NULL };
++
++	dbg_tnc("ino %lu", inum);
++
++	/*
++	 * Walk all extended attribute entries and remove them together with
++	 * corresponding extended attribute inodes.
++	 */
++	lowest_xent_key(c, &key1, inum);
++	while (1) {
++		ino_t xattr_inum;
++		int err;
++
++		xent = ubifs_tnc_next_ent(c, &key1, &nm);
++		if (IS_ERR(xent)) {
++			err = PTR_ERR(xent);
++			if (err == -ENOENT)
++				break;
++			return err;
++		}
++
++		xattr_inum = le64_to_cpu(xent->inum);
++		dbg_tnc("xent '%s', ino %lu", xent->name, xattr_inum);
++
++		nm.name = xent->name;
++		nm.len = le16_to_cpu(xent->nlen);
++		err = ubifs_tnc_remove_nm(c, &key1, &nm);
++		if (err) {
++			kfree(xent);
++			return err;
++		}
++
++		lowest_ino_key(c, &key1, xattr_inum);
++		highest_ino_key(c, &key2, xattr_inum);
++		err = ubifs_tnc_remove_range(c, &key1, &key2);
++		if (err) {
++			kfree(xent);
++			return err;
++		}
++
++		kfree(pxent);
++		pxent = xent;
++		key_read(c, &xent->key, &key1);
++	}
++
++	kfree(pxent);
++	lowest_ino_key(c, &key1, inum);
++	highest_ino_key(c, &key2, inum);
++
++	return ubifs_tnc_remove_range(c, &key1, &key2);
++}
++
++/**
++ * ubifs_tnc_next_ent - walk directory or extended attribute entries.
++ * @c: UBIFS file-system description object
++ * @key: key of last entry
++ * @nm: name of last entry found or %NULL
++ *
++ * This function finds and reads the next directory or extended attribute entry
++ * after the given key (@key) if there is one. @nm is used to resolve
++ * collisions.
++ *
++ * If the name of the current entry is not known and only the key is known,
++ * @nm->name has to be %NULL. In this case the semantics of this function is a
++ * little bit different and it returns the entry corresponding to this key, not
++ * the next one. If the key was not found, the closest "right" entry is
++ * returned.
++ *
++ * If the fist entry has to be found, @key has to contain the lowest possible
++ * key value for this inode and @name has to be %NULL.
++ *
++ * This function returns the found directory or extended attribute entry node
++ * in case of success, %-ENOENT is returned if no entry was found, and a
++ * negative error code is returned in case of failure.
++ */
++struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
++					   union ubifs_key *key,
++					   const struct qstr *nm)
++{
++	int n, err, type = key_type(c, key);
++	struct ubifs_znode *znode;
++	struct ubifs_dent_node *dent;
++	struct ubifs_zbranch *zbr;
++	union ubifs_key *dkey;
++
++	dbg_tnc("%s %s", nm->name ? (char *)nm->name : "(lowest)", DBGKEY(key));
++	ubifs_assert(is_hash_key(c, key));
++
++	mutex_lock(&c->tnc_mutex);
++	err = ubifs_lookup_level0(c, key, &znode, &n);
++	if (unlikely(err < 0))
++		goto out_unlock;
++
++	if (nm->name) {
++		if (err) {
++			/* Handle collisions */
++			err = resolve_collision(c, key, &znode, &n, nm);
++			dbg_tnc("rc returned %d, znode %p, n %d",
++				err, znode, n);
++			if (unlikely(err < 0))
++				goto out_unlock;
++		}
++
++		/* Now find next entry */
++		err = tnc_next(c, &znode, &n);
++		if (unlikely(err))
++			goto out_unlock;
++	} else {
++		/*
++		 * The full name of the entry was not given, in which case the
++		 * behavior of this function is a little different and it
++		 * returns current entry, not the next one.
++		 */
++		if (!err) {
++			/*
++			 * However, the given key does not exist in the TNC
++			 * tree and @znode/@n variables contain the closest
++			 * "preceding" element. Switch to the next one.
++			 */
++			err = tnc_next(c, &znode, &n);
++			if (err)
++				goto out_unlock;
++		}
++	}
++
++	zbr = &znode->zbranch[n];
++	dent = kmalloc(zbr->len, GFP_NOFS);
++	if (unlikely(!dent)) {
++		err = -ENOMEM;
++		goto out_unlock;
++	}
++
++	/*
++	 * The above 'tnc_next()' call could lead us to the next inode, check
++	 * this.
++	 */
++	dkey = &zbr->key;
++	if (key_inum(c, dkey) != key_inum(c, key) ||
++	    key_type(c, dkey) != type) {
++		err = -ENOENT;
++		goto out_free;
++	}
++
++	err = tnc_read_node_nm(c, zbr, dent);
++	if (unlikely(err))
++		goto out_free;
++
++	mutex_unlock(&c->tnc_mutex);
++	return dent;
++
++out_free:
++	kfree(dent);
++out_unlock:
++	mutex_unlock(&c->tnc_mutex);
++	return ERR_PTR(err);
++}
++
++/**
++ * tnc_destroy_cnext - destroy left-over obsolete znodes from a failed commit.
++ * @c: UBIFS file-system description object
++ *
++ * Destroy left-over obsolete znodes from a failed commit.
++ */
++static void tnc_destroy_cnext(struct ubifs_info *c)
++{
++	struct ubifs_znode *cnext;
++
++	if (!c->cnext)
++		return;
++	ubifs_assert(c->cmt_state == COMMIT_BROKEN);
++	cnext = c->cnext;
++	do {
++		struct ubifs_znode *znode = cnext;
++
++		cnext = cnext->cnext;
++		if (test_bit(OBSOLETE_ZNODE, &znode->flags))
++			kfree(znode);
++	} while (cnext && cnext != c->cnext);
++}
++
++/**
++ * ubifs_tnc_close - close TNC subsystem and free all related resources.
++ * @c: UBIFS file-system description object
++ */
++void ubifs_tnc_close(struct ubifs_info *c)
++{
++	long clean_freed;
++
++	tnc_destroy_cnext(c);
++	if (c->zroot.znode) {
++		clean_freed = ubifs_destroy_tnc_subtree(c->zroot.znode);
++		atomic_long_sub(clean_freed, &ubifs_clean_zn_cnt);
++	}
++	kfree(c->gap_lebs);
++	kfree(c->ilebs);
++	destroy_old_idx(c);
++}
++
++/**
++ * left_znode - get the znode to the left.
++ * @c: UBIFS file-system description object
++ * @znode: znode
++ *
++ * This function returns a pointer to the znode to the left of @znode or NULL if
++ * there is not one. A negative error code is returned on failure.
++ */
++static struct ubifs_znode *left_znode(struct ubifs_info *c,
++				      struct ubifs_znode *znode)
++{
++	int level = znode->level;
++
++	while (1) {
++		int n = znode->iip - 1;
++
++		/* Go up until we can go left */
++		znode = znode->parent;
++		if (!znode)
++			return NULL;
++		if (n >= 0) {
++			/* Now go down the rightmost branch to 'level' */
++			znode = get_znode(c, znode, n);
++			if (IS_ERR(znode))
++				return znode;
++			while (znode->level != level) {
++				n = znode->child_cnt - 1;
++				znode = get_znode(c, znode, n);
++				if (IS_ERR(znode))
++					return znode;
++			}
++			break;
++		}
++	}
++	return znode;
++}
++
++/**
++ * right_znode - get the znode to the right.
++ * @c: UBIFS file-system description object
++ * @znode: znode
++ *
++ * This function returns a pointer to the znode to the right of @znode or NULL
++ * if there is not one. A negative error code is returned on failure.
++ */
++static struct ubifs_znode *right_znode(struct ubifs_info *c,
++				       struct ubifs_znode *znode)
++{
++	int level = znode->level;
++
++	while (1) {
++		int n = znode->iip + 1;
++
++		/* Go up until we can go right */
++		znode = znode->parent;
++		if (!znode)
++			return NULL;
++		if (n < znode->child_cnt) {
++			/* Now go down the leftmost branch to 'level' */
++			znode = get_znode(c, znode, n);
++			if (IS_ERR(znode))
++				return znode;
++			while (znode->level != level) {
++				znode = get_znode(c, znode, 0);
++				if (IS_ERR(znode))
++					return znode;
++			}
++			break;
++		}
++	}
++	return znode;
++}
++
++/**
++ * lookup_znode - find a particular indexing node from TNC.
++ * @c: UBIFS file-system description object
++ * @key: index node key to lookup
++ * @level: index node level
++ * @lnum: index node LEB number
++ * @offs: index node offset
++ *
++ * This function searches an indexing node by its first key @key and its
++ * address @lnum:@offs. It looks up the indexing tree by pulling all indexing
++ * nodes it traverses to TNC. This function is called fro indexing nodes which
++ * were found on the media by scanning, for example when garbage-collecting or
++ * when doing in-the-gaps commit. This means that the indexing node which is
++ * looked for does not have to have exactly the same leftmost key @key, because
++ * the leftmost key may have been changed, in which case TNC will contain a
++ * dirty znode which still refers the same @lnum:@offs. This function is clever
++ * enough to recognize such indexing nodes.
++ *
++ * Note, if a znode was deleted or changed too much, then this function will
++ * not find it. For situations like this UBIFS has the old index RB-tree
++ * (indexed by @lnum:@offs).
++ *
++ * This function returns a pointer to the znode found or %NULL if it is not
++ * found. A negative error code is returned on failure.
++ */
++static struct ubifs_znode *lookup_znode(struct ubifs_info *c,
++					union ubifs_key *key, int level,
++					int lnum, int offs)
++{
++	struct ubifs_znode *znode, *zn;
++	int n, nn;
++
++	/*
++	 * The arguments have probably been read off flash, so don't assume
++	 * they are valid.
++	 */
++	if (level < 0)
++		return ERR_PTR(-EINVAL);
++
++	/* Get the root znode */
++	znode = c->zroot.znode;
++	if (!znode) {
++		znode = ubifs_load_znode(c, &c->zroot, NULL, 0);
++		if (IS_ERR(znode))
++			return znode;
++	}
++	/* Check if it is the one we are looking for */
++	if (c->zroot.lnum == lnum && c->zroot.offs == offs)
++		return znode;
++	/* Descend to the parent level i.e. (level + 1) */
++	if (level >= znode->level)
++		return NULL;
++	while (1) {
++		ubifs_search_zbranch(c, znode, key, &n);
++		if (n < 0) {
++			/*
++			 * We reached a znode where the leftmost key is greater
++			 * than the key we are searching for. This is the same
++			 * situation as the one described in a huge comment at
++			 * the end of the 'ubifs_lookup_level0()' function. And
++			 * for exactly the same reasons we have to try to look
++			 * left before giving up.
++			 */
++			znode = left_znode(c, znode);
++			if (!znode)
++				return NULL;
++			if (IS_ERR(znode))
++				return znode;
++			ubifs_search_zbranch(c, znode, key, &n);
++			ubifs_assert(n >= 0);
++		}
++		if (znode->level == level + 1)
++			break;
++		znode = get_znode(c, znode, n);
++		if (IS_ERR(znode))
++			return znode;
++	}
++	/* Check if the child is the one we are looking for */
++	if (znode->zbranch[n].lnum == lnum && znode->zbranch[n].offs == offs)
++		return get_znode(c, znode, n);
++	/* If the key is unique, there is nowhere else to look */
++	if (!is_hash_key(c, key))
++		return NULL;
++	/*
++	 * The key is not unique and so may be also in the znodes to either
++	 * side.
++	 */
++	zn = znode;
++	nn = n;
++	/* Look left */
++	while (1) {
++		/* Move one branch to the left */
++		if (n)
++			n -= 1;
++		else {
++			znode = left_znode(c, znode);
++			if (!znode)
++				break;
++			if (IS_ERR(znode))
++				return znode;
++			n = znode->child_cnt - 1;
++		}
++		/* Check it */
++		if (znode->zbranch[n].lnum == lnum &&
++		    znode->zbranch[n].offs == offs)
++			return get_znode(c, znode, n);
++		/* Stop if the key is less than the one we are looking for */
++		if (keys_cmp(c, &znode->zbranch[n].key, key) < 0)
++			break;
++	}
++	/* Back to the middle */
++	znode = zn;
++	n = nn;
++	/* Look right */
++	while (1) {
++		/* Move one branch to the right */
++		if (++n >= znode->child_cnt) {
++			znode = right_znode(c, znode);
++			if (!znode)
++				break;
++			if (IS_ERR(znode))
++				return znode;
++			n = 0;
++		}
++		/* Check it */
++		if (znode->zbranch[n].lnum == lnum &&
++		    znode->zbranch[n].offs == offs)
++			return get_znode(c, znode, n);
++		/* Stop if the key is greater than the one we are looking for */
++		if (keys_cmp(c, &znode->zbranch[n].key, key) > 0)
++			break;
++	}
++	return NULL;
++}
++
++/**
++ * is_idx_node_in_tnc - determine if an index node is in the TNC.
++ * @c: UBIFS file-system description object
++ * @key: key of index node
++ * @level: index node level
++ * @lnum: LEB number of index node
++ * @offs: offset of index node
++ *
++ * This function returns %0 if the index node is not referred to in the TNC, %1
++ * if the index node is referred to in the TNC and the corresponding znode is
++ * dirty, %2 if an index node is referred to in the TNC and the corresponding
++ * znode is clean, and a negative error code in case of failure.
++ *
++ * Note, the @key argument has to be the key of the first child. Also note,
++ * this function relies on the fact that 0:0 is never a valid LEB number and
++ * offset for a main-area node.
++ */
++int is_idx_node_in_tnc(struct ubifs_info *c, union ubifs_key *key, int level,
++		       int lnum, int offs)
++{
++	struct ubifs_znode *znode;
++
++	znode = lookup_znode(c, key, level, lnum, offs);
++	if (!znode)
++		return 0;
++	if (IS_ERR(znode))
++		return PTR_ERR(znode);
++
++	return ubifs_zn_dirty(znode) ? 1 : 2;
++}
++
++/**
++ * is_leaf_node_in_tnc - determine if a non-indexing not is in the TNC.
++ * @c: UBIFS file-system description object
++ * @key: node key
++ * @lnum: node LEB number
++ * @offs: node offset
++ *
++ * This function returns %1 if the node is referred to in the TNC, %0 if it is
++ * not, and a negative error code in case of failure.
++ *
++ * Note, this function relies on the fact that 0:0 is never a valid LEB number
++ * and offset for a main-area node.
++ */
++static int is_leaf_node_in_tnc(struct ubifs_info *c, union ubifs_key *key,
++			       int lnum, int offs)
++{
++	struct ubifs_zbranch *zbr;
++	struct ubifs_znode *znode, *zn;
++	int n, found, err, nn;
++	const int unique = !is_hash_key(c, key);
++
++	found = ubifs_lookup_level0(c, key, &znode, &n);
++	if (found < 0)
++		return found; /* Error code */
++	if (!found)
++		return 0;
++	zbr = &znode->zbranch[n];
++	if (lnum == zbr->lnum && offs == zbr->offs)
++		return 1; /* Found it */
++	if (unique)
++		return 0;
++	/*
++	 * Because the key is not unique, we have to look left
++	 * and right as well
++	 */
++	zn = znode;
++	nn = n;
++	/* Look left */
++	while (1) {
++		err = tnc_prev(c, &znode, &n);
++		if (err == -ENOENT)
++			break;
++		if (err)
++			return err;
++		if (keys_cmp(c, key, &znode->zbranch[n].key))
++			break;
++		zbr = &znode->zbranch[n];
++		if (lnum == zbr->lnum && offs == zbr->offs)
++			return 1; /* Found it */
++	}
++	/* Look right */
++	znode = zn;
++	n = nn;
++	while (1) {
++		err = tnc_next(c, &znode, &n);
++		if (err) {
++			if (err == -ENOENT)
++				return 0;
++			return err;
++		}
++		if (keys_cmp(c, key, &znode->zbranch[n].key))
++			break;
++		zbr = &znode->zbranch[n];
++		if (lnum == zbr->lnum && offs == zbr->offs)
++			return 1; /* Found it */
++	}
++	return 0;
++}
++
++/**
++ * ubifs_tnc_has_node - determine whether a node is in the TNC.
++ * @c: UBIFS file-system description object
++ * @key: node key
++ * @level: index node level (if it is an index node)
++ * @lnum: node LEB number
++ * @offs: node offset
++ * @is_idx: non-zero if the node is an index node
++ *
++ * This function returns %1 if the node is in the TNC, %0 if it is not, and a
++ * negative error code in case of failure. For index nodes, @key has to be the
++ * key of the first child. An index node is considered to be in the TNC only if
++ * the corresponding znode is clean or has not been loaded.
++ */
++int ubifs_tnc_has_node(struct ubifs_info *c, union ubifs_key *key, int level,
++		       int lnum, int offs, int is_idx)
++{
++	int err;
++
++	mutex_lock(&c->tnc_mutex);
++	if (is_idx) {
++		err = is_idx_node_in_tnc(c, key, level, lnum, offs);
++		if (err < 0)
++			goto out_unlock;
++		if (err == 1)
++			/* The index node was found but it was dirty */
++			err = 0;
++		else if (err == 2)
++			/* The index node was found and it was clean */
++			err = 1;
++		else
++			BUG_ON(err != 0);
++	} else
++		err = is_leaf_node_in_tnc(c, key, lnum, offs);
++
++out_unlock:
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * ubifs_dirty_idx_node - dirty an index node.
++ * @c: UBIFS file-system description object
++ * @key: index node key
++ * @level: index node level
++ * @lnum: index node LEB number
++ * @offs: index node offset
++ *
++ * This function loads and dirties an index node so that it can be garbage
++ * collected. The @key argument has to be the key of the first child. This
++ * function relies on the fact that 0:0 is never a valid LEB number and offset
++ * for a main-area node. Returns %0 on success and a negative error code on
++ * failure.
++ */
++int ubifs_dirty_idx_node(struct ubifs_info *c, union ubifs_key *key, int level,
++			 int lnum, int offs)
++{
++	struct ubifs_znode *znode;
++	int err = 0;
++
++	mutex_lock(&c->tnc_mutex);
++	znode = lookup_znode(c, key, level, lnum, offs);
++	if (!znode)
++		goto out_unlock;
++	if (IS_ERR(znode)) {
++		err = PTR_ERR(znode);
++		goto out_unlock;
++	}
++	znode = dirty_cow_bottom_up(c, znode);
++	if (IS_ERR(znode)) {
++		err = PTR_ERR(znode);
++		goto out_unlock;
++	}
++
++out_unlock:
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/tnc_commit.c avr32-2.6/fs/ubifs/tnc_commit.c
+--- linux-2.6.25.6/fs/ubifs/tnc_commit.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/tnc_commit.c	2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,1105 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/* This file implements TNC functions for committing */
++
++#include "ubifs.h"
++
++/**
++ * make_idx_node - make an index node for fill-the-gaps method of TNC commit.
++ * @c: UBIFS file-system description object
++ * @idx: buffer in which to place new index node
++ * @znode: znode from which to make new index node
++ * @lnum: LEB number where new index node will be written
++ * @offs: offset where new index node will be written
++ * @len: length of new index node
++ */
++static int make_idx_node(struct ubifs_info *c, struct ubifs_idx_node *idx,
++			 struct ubifs_znode *znode, int lnum, int offs, int len)
++{
++	struct ubifs_znode *zp;
++	int i, err;
++
++	/* Make index node */
++	idx->ch.node_type = UBIFS_IDX_NODE;
++	idx->child_cnt = cpu_to_le16(znode->child_cnt);
++	idx->level = cpu_to_le16(znode->level);
++	for (i = 0; i < znode->child_cnt; i++) {
++		struct ubifs_branch *br = ubifs_idx_branch(c, idx, i);
++		struct ubifs_zbranch *zbr = &znode->zbranch[i];
++
++		key_write_idx(c, &zbr->key, &br->key);
++		br->lnum = cpu_to_le32(zbr->lnum);
++		br->offs = cpu_to_le32(zbr->offs);
++		br->len = cpu_to_le32(zbr->len);
++		if (!zbr->lnum || !zbr->len) {
++			ubifs_err("bad ref in znode");
++			dbg_dump_znode(c, znode);
++			if (zbr->znode)
++				dbg_dump_znode(c, zbr->znode);
++		}
++	}
++	ubifs_prepare_node(c, idx, len, 0);
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++	znode->lnum = lnum;
++	znode->offs = offs;
++	znode->len = len;
++#endif
++
++	err = insert_old_idx_znode(c, znode);
++
++	/* Update the parent */
++	zp = znode->parent;
++	if (zp) {
++		struct ubifs_zbranch *zbr;
++
++		zbr = &zp->zbranch[znode->iip];
++		zbr->lnum = lnum;
++		zbr->offs = offs;
++		zbr->len = len;
++	} else {
++		c->zroot.lnum = lnum;
++		c->zroot.offs = offs;
++		c->zroot.len = len;
++	}
++	c->calc_idx_sz += ALIGN(len, 8);
++
++	atomic_long_dec(&c->dirty_zn_cnt);
++
++	ubifs_assert(ubifs_zn_dirty(znode));
++	ubifs_assert(test_bit(COW_ZNODE, &znode->flags));
++
++	__clear_bit(DIRTY_ZNODE, &znode->flags);
++	__clear_bit(COW_ZNODE, &znode->flags);
++
++	return err;
++}
++
++/**
++ * fill_gap - make index nodes in gaps in dirty index LEBs.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number that gap appears in
++ * @gap_start: offset of start of gap
++ * @gap_end: offset of end of gap
++ * @dirt: adds dirty space to this
++ *
++ * This function returns the number of index nodes written into the gap.
++ */
++static int fill_gap(struct ubifs_info *c, int lnum, int gap_start, int gap_end,
++		    int *dirt)
++{
++	int len, gap_remains, gap_pos, written, pad_len;
++
++	ubifs_assert((gap_start & 7) == 0);
++	ubifs_assert((gap_end & 7) == 0);
++	ubifs_assert(gap_end >= gap_start);
++
++	gap_remains = gap_end - gap_start;
++	if (!gap_remains)
++		return 0;
++	gap_pos = gap_start;
++	written = 0;
++	while (c->enext) {
++		len = ubifs_idx_node_sz(c, c->enext->child_cnt);
++		if (len < gap_remains) {
++			struct ubifs_znode *znode = c->enext;
++			const int alen = ALIGN(len, 8);
++			int err;
++
++			ubifs_assert(alen <= gap_remains);
++			err = make_idx_node(c, c->ileb_buf + gap_pos, znode,
++					    lnum, gap_pos, len);
++			if (err)
++				return err;
++			gap_remains -= alen;
++			gap_pos += alen;
++			c->enext = znode->cnext;
++			if (c->enext == c->cnext)
++				c->enext = NULL;
++			written += 1;
++		} else
++			break;
++	}
++	if (gap_end == c->leb_size) {
++		c->ileb_len = ALIGN(gap_pos, c->min_io_size);
++		/* Pad to end of min_io_size */
++		pad_len = c->ileb_len - gap_pos;
++	} else
++		/* Pad to end of gap */
++		pad_len = gap_remains;
++	dbg_gc("LEB %d:%d to %d len %d nodes written %d wasted bytes %d",
++	       lnum, gap_start, gap_end, gap_end - gap_start, written, pad_len);
++	ubifs_pad(c, c->ileb_buf + gap_pos, pad_len);
++	*dirt += pad_len;
++	return written;
++}
++
++/**
++ * find_old_idx - find an index node obsoleted since the last commit start.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB number of obsoleted index node
++ * @offs: offset of obsoleted index node
++ *
++ * Returns %1 if found and %0 otherwise.
++ */
++static int find_old_idx(struct ubifs_info *c, int lnum, int offs)
++{
++	struct ubifs_old_idx *o;
++	struct rb_node *p;
++
++	p = c->old_idx.rb_node;
++	while (p) {
++		o = rb_entry(p, struct ubifs_old_idx, rb);
++		if (lnum < o->lnum)
++			p = p->rb_left;
++		else if (lnum > o->lnum)
++			p = p->rb_right;
++		else if (offs < o->offs)
++			p = p->rb_left;
++		else if (offs > o->offs)
++			p = p->rb_right;
++		else
++			return 1;
++	}
++	return 0;
++}
++
++/**
++ * is_idx_node_in_use - determine if an index node can be overwritten.
++ * @c: UBIFS file-system description object
++ * @key: key of index node
++ * @level: index node level
++ * @lnum: LEB number of index node
++ * @offs: offset of index node
++ *
++ * If @key / @lnum / @offs identify an index node that was not part of the old
++ * index, then this function returns %0 (obsolete).  Else if the index node was
++ * part of the old index but is now dirty %1 is returned, else if it is clean %2
++ * is returned. A negative error code is returned on failure.
++ */
++static int is_idx_node_in_use(struct ubifs_info *c, union ubifs_key *key,
++			      int level, int lnum, int offs)
++{
++	int ret;
++
++	ret = is_idx_node_in_tnc(c, key, level, lnum, offs);
++	if (ret < 0)
++		return ret; /* Error code */
++	if (ret == 0)
++		if (find_old_idx(c, lnum, offs))
++			return 1;
++	return ret;
++}
++
++/**
++ * layout_leb_in_gaps - layout index nodes using in-the-gaps method.
++ * @c: UBIFS file-system description object
++ * @p: return LEB number here
++ *
++ * This function lays out new index nodes for dirty znodes using in-the-gaps
++ * method of TNC commit.
++ * This function merely puts the next znode into the next gap, making no attempt
++ * to try to maximise the number of znodes that fit.
++ * This function returns the number of index nodes written into the gaps, or a
++ * negative error code on failure.
++ */
++static int layout_leb_in_gaps(struct ubifs_info *c, int *p)
++{
++	struct ubifs_scan_leb *sleb;
++	struct ubifs_scan_node *snod;
++	int lnum, dirt = 0, gap_start, gap_end, err, written, tot_written;
++
++	tot_written = 0;
++	/* Get an index LEB with lots of obsolete index nodes */
++	lnum = ubifs_find_dirty_idx_leb(c);
++	if (lnum < 0)
++		/*
++		 * There also may be dirt in the index head that could be
++		 * filled, however we do not check there at present.
++		 */
++		return lnum; /* Error code */
++	*p = lnum;
++	dbg_gc("LEB %d", lnum);
++	/*
++	 * Scan the index LEB.  We use the generic scan for this even though
++	 * it is more comprehensive and less efficient than is needed for this
++	 * purpose.
++	 */
++	sleb = ubifs_scan(c, lnum, 0, c->ileb_buf);
++	c->ileb_len = 0;
++	if (IS_ERR(sleb))
++		return PTR_ERR(sleb);
++	gap_start = 0;
++	list_for_each_entry(snod, &sleb->nodes, list) {
++		struct ubifs_idx_node *idx;
++		int in_use, level;
++
++		ubifs_assert(snod->type == UBIFS_IDX_NODE);
++		idx = snod->node;
++		key_read(c, ubifs_idx_key(c, idx), &snod->key);
++		level = le16_to_cpu(idx->level);
++		/* Determine if the index node is in use (not obsolete) */
++		in_use = is_idx_node_in_use(c, &snod->key, level, lnum,
++					    snod->offs);
++		if (in_use < 0) {
++			ubifs_scan_destroy(sleb);
++			return in_use; /* Error code */
++		}
++		if (in_use) {
++			if (in_use == 1)
++				dirt += ALIGN(snod->len, 8);
++			/*
++			 * The obsolete index nodes form gaps that can be
++			 * overwritten.  This gap has ended because we have
++			 * found an index node that is still in use
++			 * i.e. not obsolete
++			 */
++			gap_end = snod->offs;
++			/* Try to fill gap */
++			written = fill_gap(c, lnum, gap_start, gap_end, &dirt);
++			if (written < 0) {
++				ubifs_scan_destroy(sleb);
++				return written; /* Error code */
++			}
++			tot_written += written;
++			gap_start = ALIGN(snod->offs + snod->len, 8);
++		}
++	}
++	ubifs_scan_destroy(sleb);
++	c->ileb_len = c->leb_size;
++	gap_end = c->leb_size;
++	/* Try to fill gap */
++	written = fill_gap(c, lnum, gap_start, gap_end, &dirt);
++	if (written < 0)
++		return written; /* Error code */
++	tot_written += written;
++	if (tot_written == 0) {
++		struct ubifs_lprops lp;
++
++		dbg_gc("LEB %d wrote %d index nodes", lnum, tot_written);
++		err = ubifs_read_one_lp(c, lnum, &lp);
++		if (err)
++			return err;
++		if (lp.free == c->leb_size) {
++			/*
++			 * We must have snatched this LEB from the idx_gc list
++			 * so we need to correct the free and dirty space.
++			 */
++			err = ubifs_change_one_lp(c, lnum,
++						  c->leb_size - c->ileb_len,
++						  dirt, 0, 0, 0);
++			if (err)
++				return err;
++		}
++		return 0;
++	}
++	err = ubifs_change_one_lp(c, lnum, c->leb_size - c->ileb_len, dirt,
++				  0, 0, 0);
++	if (err)
++		return err;
++	err = ubi_leb_change(c->ubi, lnum, c->ileb_buf, c->ileb_len,
++			     UBI_SHORTTERM);
++	if (err) {
++		ubifs_err("ubi_leb_change failed, error %d", err);
++		return err;
++	}
++	dbg_gc("LEB %d wrote %d index nodes", lnum, tot_written);
++	return tot_written;
++}
++
++/**
++ * get_leb_cnt - calculate the number of empty LEBs needed to commit.
++ * @c: UBIFS file-system description object
++ * @cnt: number of znodes to commit
++ *
++ * This function returns the number of empty LEBs needed to commit @cnt znodes
++ * to the current index head.  The number is not exact and may be more than
++ * needed.
++ */
++static int get_leb_cnt(struct ubifs_info *c, int cnt)
++{
++	int d;
++
++	/* Assume maximum index node size (i.e. overestimate space needed) */
++	cnt -= (c->leb_size - c->ihead_offs) / c->max_idx_node_sz;
++	if (cnt < 0)
++		cnt = 0;
++	d = c->leb_size / c->max_idx_node_sz;
++	return DIV_ROUND_UP(cnt, d);
++}
++
++/**
++ * layout_in_gaps - in-the-gaps method of committing TNC.
++ * @c: UBIFS file-system description object
++ * @cnt: number of dirty znodes to commit.
++ *
++ * This function lays out new index nodes for dirty znodes using in-the-gaps
++ * method of TNC commit.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int layout_in_gaps(struct ubifs_info *c, int cnt)
++{
++	int err, leb_needed_cnt, written, *p;
++
++	dbg_gc("%d znodes to write", cnt);
++
++	c->gap_lebs = kmalloc(sizeof(int) * (c->lst.idx_lebs + 1), GFP_NOFS);
++	if (!c->gap_lebs)
++		return -ENOMEM;
++
++	p = c->gap_lebs;
++	do {
++		ubifs_assert(p < c->gap_lebs + sizeof(int) * c->lst.idx_lebs);
++		written = layout_leb_in_gaps(c, p);
++		if (written < 0) {
++			err = written;
++			if (err == -ENOSPC) {
++				if (!dbg_force_in_the_gaps_enabled) {
++					/*
++					 * Do not print scary warnings if the
++					 * debugging option which forces
++					 * in-the-gaps is enabled.
++					 */
++					ubifs_err("out of space");
++					spin_lock(&c->space_lock);
++					dbg_dump_budg(c);
++					spin_unlock(&c->space_lock);
++					dbg_dump_lprops(c);
++				}
++				/* Try to commit anyway */
++				err = 0;
++				break;
++			}
++			kfree(c->gap_lebs);
++			c->gap_lebs = NULL;
++			return err;
++		}
++		p++;
++		cnt -= written;
++		leb_needed_cnt = get_leb_cnt(c, cnt);
++		dbg_gc("%d znodes remaining, need %d LEBs, have %d", cnt,
++		       leb_needed_cnt, c->ileb_cnt);
++	} while (leb_needed_cnt > c->ileb_cnt);
++
++	*p = -1;
++	return 0;
++}
++
++/**
++ * layout_in_empty_space - layout index nodes in empty space.
++ * @c: UBIFS file-system description object
++ *
++ * This function lays out new index nodes for dirty znodes using empty LEBs.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int layout_in_empty_space(struct ubifs_info *c)
++{
++	struct ubifs_znode *znode, *cnext, *zp;
++	int lnum, offs, len, next_len, buf_len, buf_offs, used, avail;
++	int wlen, blen, err;
++
++	cnext = c->enext;
++	if (!cnext)
++		return 0;
++
++	lnum = c->ihead_lnum;
++	buf_offs = c->ihead_offs;
++
++	buf_len = ubifs_idx_node_sz(c, c->fanout);
++	buf_len = ALIGN(buf_len, c->min_io_size);
++	used = 0;
++	avail = buf_len;
++
++	/* Ensure there is enough room for first write */
++	next_len = ubifs_idx_node_sz(c, cnext->child_cnt);
++	if (buf_offs + next_len > c->leb_size)
++		lnum = -1;
++
++	while (1) {
++		znode = cnext;
++
++		len = ubifs_idx_node_sz(c, znode->child_cnt);
++
++		/* Determine the index node position */
++		if (lnum == -1) {
++			if (c->ileb_nxt >= c->ileb_cnt) {
++				ubifs_err("out of space");
++				return -ENOSPC;
++			}
++			lnum = c->ilebs[c->ileb_nxt++];
++			buf_offs = 0;
++			used = 0;
++			avail = buf_len;
++		}
++
++		offs = buf_offs + used;
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++		znode->lnum = lnum;
++		znode->offs = offs;
++		znode->len = len;
++#endif
++
++		/* Update the parent */
++		zp = znode->parent;
++		if (zp) {
++			struct ubifs_zbranch *zbr;
++			int i;
++
++			i = znode->iip;
++			zbr = &zp->zbranch[i];
++			zbr->lnum = lnum;
++			zbr->offs = offs;
++			zbr->len = len;
++		} else {
++			c->zroot.lnum = lnum;
++			c->zroot.offs = offs;
++			c->zroot.len = len;
++		}
++		c->calc_idx_sz += ALIGN(len, 8);
++
++		/*
++		 * Once lprops is updated, we can decrease the dirty znode count
++		 * but it is easier to just do it here.
++		 */
++		atomic_long_dec(&c->dirty_zn_cnt);
++
++		/*
++		 * Calculate the next index node length to see if there is
++		 * enough room for it
++		 */
++		cnext = znode->cnext;
++		if (cnext == c->cnext)
++			next_len = 0;
++		else
++			next_len = ubifs_idx_node_sz(c, cnext->child_cnt);
++
++		if (c->min_io_size == 1) {
++			buf_offs += ALIGN(len, 8);
++			if (next_len) {
++				if (buf_offs + next_len <= c->leb_size)
++					continue;
++				err = ubifs_update_one_lp(c, lnum, 0,
++						c->leb_size - buf_offs, 0, 0);
++				if (err)
++					return err;
++				lnum = -1;
++				continue;
++			}
++			err = ubifs_update_one_lp(c, lnum,
++					c->leb_size - buf_offs, 0, 0, 0);
++			if (err)
++				return err;
++			break;
++		}
++
++		/* Update buffer positions */
++		wlen = used + len;
++		used += ALIGN(len, 8);
++		avail -= ALIGN(len, 8);
++
++		if (next_len != 0 &&
++		    buf_offs + used + next_len <= c->leb_size &&
++		    avail > 0)
++			continue;
++
++		if (avail <= 0 && next_len &&
++		    buf_offs + used + next_len <= c->leb_size)
++			blen = buf_len;
++		else
++			blen = ALIGN(wlen, c->min_io_size);
++
++		/* The buffer is full or there are no more znodes to do */
++		buf_offs += blen;
++		if (next_len) {
++			if (buf_offs + next_len > c->leb_size) {
++				err = ubifs_update_one_lp(c, lnum,
++					c->leb_size - buf_offs, blen - used,
++					0, 0);
++				if (err)
++					return err;
++				lnum = -1;
++			}
++			used -= blen;
++			if (used < 0)
++				used = 0;
++			avail = buf_len - used;
++			continue;
++		}
++		err = ubifs_update_one_lp(c, lnum, c->leb_size - buf_offs,
++					  blen - used, 0, 0);
++		if (err)
++			return err;
++		break;
++	}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++	c->new_ihead_lnum = lnum;
++	c->new_ihead_offs = buf_offs;
++#endif
++
++	return 0;
++}
++
++/**
++ * layout_commit - determine positions of index nodes to commit.
++ * @c: UBIFS file-system description object
++ * @no_space: indicates that insufficient empty LEBs were allocated
++ * @cnt: number of znodes to commit
++ *
++ * Calculate and update the positions of index nodes to commit.  If there were
++ * an insufficient number of empty LEBs allocated, then index nodes are placed
++ * into the gaps created by obsolete index nodes in non-empty index LEBs.  For
++ * this purpose, an obsolete index node is one that was not in the index as at
++ * the end of the last commit.  To write "in-the-gaps" requires that those index
++ * LEBs are updated atomically in-place.
++ */
++static int layout_commit(struct ubifs_info *c, int no_space, int cnt)
++{
++	int err;
++
++	if (no_space) {
++		err = layout_in_gaps(c, cnt);
++		if (err)
++			return err;
++	}
++	err = layout_in_empty_space(c);
++	return err;
++}
++
++/**
++ * find_first_dirty - find first dirty znode.
++ * @znode: znode to begin searching from
++ */
++static struct ubifs_znode *find_first_dirty(struct ubifs_znode *znode)
++{
++	int i, cont;
++
++	if (!znode)
++		return NULL;
++
++	while (1) {
++		if (znode->level == 0) {
++			if (ubifs_zn_dirty(znode))
++				return znode;
++			return NULL;
++		}
++		cont = 0;
++		for (i = 0; i < znode->child_cnt; i++) {
++			struct ubifs_zbranch *zbr = &znode->zbranch[i];
++
++			if (zbr->znode && ubifs_zn_dirty(zbr->znode)) {
++				znode = zbr->znode;
++				cont = 1;
++				break;
++			}
++		}
++		if (!cont) {
++			if (ubifs_zn_dirty(znode))
++				return znode;
++			return NULL;
++		}
++	}
++}
++
++/**
++ * find_next_dirty - find next dirty znode.
++ * @znode: znode to begin searching from
++ */
++static struct ubifs_znode *find_next_dirty(struct ubifs_znode *znode)
++{
++	int n = znode->iip + 1;
++
++	znode = znode->parent;
++	if (!znode)
++		return NULL;
++	for (; n < znode->child_cnt; n++) {
++		struct ubifs_zbranch *zbr = &znode->zbranch[n];
++
++		if (zbr->znode && ubifs_zn_dirty(zbr->znode))
++			return find_first_dirty(zbr->znode);
++	}
++	return znode;
++}
++
++/**
++ * get_znodes_to_commit - create list of dirty znodes to commit.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns the number of znodes to commit.
++ */
++static int get_znodes_to_commit(struct ubifs_info *c)
++{
++	struct ubifs_znode *znode, *cnext;
++	int cnt = 0;
++
++	c->cnext = find_first_dirty(c->zroot.znode);
++	znode = c->enext = c->cnext;
++	if (!znode) {
++		dbg_cmt("no znodes to commit");
++		return 0;
++	}
++	cnt += 1;
++	while (1) {
++		ubifs_assert(!test_bit(COW_ZNODE, &znode->flags));
++		__set_bit(COW_ZNODE, &znode->flags);
++		znode->alt = 0;
++		cnext = find_next_dirty(znode);
++		if (!cnext) {
++			znode->cnext = c->cnext;
++			break;
++		}
++		znode->cnext = cnext;
++		znode = cnext;
++		cnt += 1;
++	}
++	dbg_cmt("committing %d znodes", cnt);
++	ubifs_assert(cnt == atomic_long_read(&c->dirty_zn_cnt));
++	return cnt;
++}
++
++/**
++ * alloc_idx_lebs - allocate empty LEBs to be used to commit.
++ * @c: UBIFS file-system description object
++ * @cnt: number of znodes to commit
++ *
++ * This function returns %-ENOSPC if it cannot allocate a sufficient number of
++ * empty LEBs.  %0 is returned on success, otherwise a negative error code
++ * is returned.
++ */
++static int alloc_idx_lebs(struct ubifs_info *c, int cnt)
++{
++	int i, leb_cnt, lnum;
++
++	c->ileb_cnt = 0;
++	c->ileb_nxt = 0;
++	leb_cnt = get_leb_cnt(c, cnt);
++	dbg_cmt("need about %d empty LEBS for TNC commit", leb_cnt);
++	if (!leb_cnt)
++		return 0;
++	c->ilebs = kmalloc(leb_cnt * sizeof(int), GFP_NOFS);
++	if (!c->ilebs)
++		return -ENOMEM;
++	for (i = 0; i < leb_cnt; i++) {
++		lnum = ubifs_find_free_leb_for_idx(c);
++		if (lnum < 0)
++			return lnum;
++		c->ilebs[c->ileb_cnt++] = lnum;
++		dbg_cmt("LEB %d", lnum);
++	}
++	if (dbg_force_in_the_gaps())
++		return -ENOSPC;
++	return 0;
++}
++
++/**
++ * free_unused_idx_lebs - free unused LEBs that were allocated for the commit.
++ * @c: UBIFS file-system description object
++ *
++ * It is possible that we allocate more empty LEBs for the commit than we need.
++ * This functions frees the surplus.
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int free_unused_idx_lebs(struct ubifs_info *c)
++{
++	int i, err = 0, lnum, er;
++
++	for (i = c->ileb_nxt; i < c->ileb_cnt; i++) {
++		lnum = c->ilebs[i];
++		dbg_cmt("LEB %d", lnum);
++		er = ubifs_change_one_lp(c, lnum, LPROPS_NC, LPROPS_NC, 0,
++					 LPROPS_INDEX | LPROPS_TAKEN, 0);
++		if (!err)
++			err = er;
++	}
++	return err;
++}
++
++/**
++ * free_idx_lebs - free unused LEBs after commit end.
++ * @c: UBIFS file-system description object
++ *
++ * This function returns %0 on success and a negative error code on failure.
++ */
++static int free_idx_lebs(struct ubifs_info *c)
++{
++	int err;
++
++	err = free_unused_idx_lebs(c);
++	kfree(c->ilebs);
++	c->ilebs = NULL;
++	return err;
++}
++
++/**
++ * ubifs_tnc_start_commit - start TNC commit.
++ * @c: UBIFS file-system description object
++ * @zroot: new index root position is returned here
++ *
++ * This function prepares the list of indexing nodes to commit and lays out
++ * their positions on flash. If there is not enough free space it uses the
++ * in-gap commit method. Returns zero in case of success and a negative error
++ * code in case of failure.
++ */
++int ubifs_tnc_start_commit(struct ubifs_info *c, struct ubifs_zbranch *zroot)
++{
++	int err = 0, cnt;
++
++	mutex_lock(&c->tnc_mutex);
++	err = dbg_check_tnc(c, 1);
++	if (err)
++		goto out;
++	cnt = get_znodes_to_commit(c);
++	if (cnt != 0) {
++		int no_space = 0;
++
++		err = alloc_idx_lebs(c, cnt);
++		if (err == -ENOSPC)
++			no_space = 1;
++		else if (err)
++			goto out_free;
++		err = layout_commit(c, no_space, cnt);
++		if (err)
++			goto out_free;
++		ubifs_assert(atomic_long_read(&c->dirty_zn_cnt) == 0);
++		err = free_unused_idx_lebs(c);
++		if (err)
++			goto out;
++	}
++	destroy_old_idx(c);
++	memcpy(zroot, &c->zroot, sizeof(struct ubifs_zbranch));
++
++	err = ubifs_save_dirty_idx_lnums(c);
++	if (err)
++		goto out;
++
++	spin_lock(&c->space_lock);
++	/*
++	 * Although we have not finished committing yet, update size of the
++	 * committed index ('c->old_idx_sz') and zero out the index growth
++	 * budget. It is OK to do this now, because we've reserved all the
++	 * space which is needed to commit the index, and it is save for the
++	 * budgeting subsystem to assume the index is already committed,
++	 * even though it is not.
++	 */
++	c->old_idx_sz = c->calc_idx_sz;
++	c->budg_uncommitted_idx = 0;
++	spin_unlock(&c->space_lock);
++	mutex_unlock(&c->tnc_mutex);
++
++	dbg_cmt("number of index LEBs %d", c->lst.idx_lebs);
++	dbg_cmt("size of index %llu", c->calc_idx_sz);
++	return err;
++
++out_free:
++	free_idx_lebs(c);
++out:
++	mutex_unlock(&c->tnc_mutex);
++	return err;
++}
++
++/**
++ * write_index - write index nodes.
++ * @c: UBIFS file-system description object
++ *
++ * This function writes the index nodes whose positions were laid out in the
++ * layout_in_empty_space function.
++ */
++static int write_index(struct ubifs_info *c)
++{
++	struct ubifs_idx_node *idx;
++	struct ubifs_znode *znode, *cnext;
++	int i, lnum, offs, len, next_len, buf_len, buf_offs, used;
++	int avail, wlen, err, lnum_pos = 0;
++
++	cnext = c->enext;
++	if (!cnext)
++		return 0;
++
++	/*
++	 * Always write index nodes to the index head so that index nodes and
++	 * other types of nodes are never mixed in the same erase block.
++	 */
++	lnum = c->ihead_lnum;
++	buf_offs = c->ihead_offs;
++
++	/* Allocate commit buffer */
++	buf_len = ALIGN(c->max_idx_node_sz, c->min_io_size);
++	used = 0;
++	avail = buf_len;
++
++	/* Ensure there is enough room for first write */
++	next_len = ubifs_idx_node_sz(c, cnext->child_cnt);
++	if (buf_offs + next_len > c->leb_size) {
++		err = ubifs_update_one_lp(c, lnum, LPROPS_NC, 0, 0,
++					  LPROPS_TAKEN);
++		if (err)
++			return err;
++		lnum = -1;
++	}
++
++	while (1) {
++		cond_resched();
++
++		znode = cnext;
++		idx = c->cbuf + used;
++
++		/* Make index node */
++		idx->ch.node_type = UBIFS_IDX_NODE;
++		idx->child_cnt = cpu_to_le16(znode->child_cnt);
++		idx->level = cpu_to_le16(znode->level);
++		for (i = 0; i < znode->child_cnt; i++) {
++			struct ubifs_branch *br = ubifs_idx_branch(c, idx, i);
++			struct ubifs_zbranch *zbr = &znode->zbranch[i];
++
++			key_write_idx(c, &zbr->key, &br->key);
++			br->lnum = cpu_to_le32(zbr->lnum);
++			br->offs = cpu_to_le32(zbr->offs);
++			br->len = cpu_to_le32(zbr->len);
++			if (!zbr->lnum || !zbr->len) {
++				ubifs_err("bad ref in znode");
++				dbg_dump_znode(c, znode);
++				if (zbr->znode)
++					dbg_dump_znode(c, zbr->znode);
++			}
++		}
++		len = ubifs_idx_node_sz(c, znode->child_cnt);
++		ubifs_prepare_node(c, idx, len, 0);
++
++		/* Determine the index node position */
++		if (lnum == -1) {
++			lnum = c->ilebs[lnum_pos++];
++			buf_offs = 0;
++			used = 0;
++			avail = buf_len;
++		}
++		offs = buf_offs + used;
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++		if (lnum != znode->lnum || offs != znode->offs ||
++		    len != znode->len) {
++			ubifs_err("inconsistent znode posn");
++			return -EINVAL;
++		}
++#endif
++
++		/* Grab some stuff from znode while we still can */
++		cnext = znode->cnext;
++
++		ubifs_assert(ubifs_zn_dirty(znode));
++		ubifs_assert(test_bit(COW_ZNODE, &znode->flags));
++
++		/*
++		 * It is important that other threads should see %DIRTY_ZNODE
++		 * flag cleared before %COW_ZNODE. Specifically, it matters in
++		 * the 'dirty_cow_znode()' function. This is the reason for the
++		 * first barrier. Also, we want the bit changes to be seen to
++		 * other threads ASAP, to avoid unnecesarry copying, which is
++		 * the reason for the second barrier.
++		 */
++		clear_bit(DIRTY_ZNODE, &znode->flags);
++		smp_mb__before_clear_bit();
++		clear_bit(COW_ZNODE, &znode->flags);
++		smp_mb__after_clear_bit();
++
++		/* Do not access znode from this point on */
++
++		/* Update buffer positions */
++		wlen = used + len;
++		used += ALIGN(len, 8);
++		avail -= ALIGN(len, 8);
++
++		/*
++		 * Calculate the next index node length to see if there is
++		 * enough room for it
++		 */
++		if (cnext == c->cnext)
++			next_len = 0;
++		else
++			next_len = ubifs_idx_node_sz(c, cnext->child_cnt);
++
++		if (c->min_io_size == 1) {
++			/*
++			 * Write the prepared index node immediately if there is
++			 * no minimum IO size
++			 */
++			err = ubifs_leb_write(c, lnum, c->cbuf, buf_offs,
++					      wlen, UBI_SHORTTERM);
++			if (err)
++				return err;
++			buf_offs += ALIGN(wlen, 8);
++			if (next_len) {
++				used = 0;
++				avail = buf_len;
++				if (buf_offs + next_len > c->leb_size) {
++					err = ubifs_update_one_lp(c, lnum,
++						LPROPS_NC, 0, 0, LPROPS_TAKEN);
++					if (err)
++						return err;
++					lnum = -1;
++				}
++				continue;
++			}
++		} else {
++			int blen, nxt_offs = buf_offs + used + next_len;
++
++			if (next_len && nxt_offs <= c->leb_size) {
++				if (avail > 0)
++					continue;
++				else
++					blen = buf_len;
++			} else {
++				wlen = ALIGN(wlen, 8);
++				blen = ALIGN(wlen, c->min_io_size);
++				ubifs_pad(c, c->cbuf + wlen, blen - wlen);
++			}
++			/*
++			 * The buffer is full or there are no more znodes
++			 * to do
++			 */
++			err = ubifs_leb_write(c, lnum, c->cbuf, buf_offs,
++					      blen, UBI_SHORTTERM);
++			if (err)
++				return err;
++			buf_offs += blen;
++			if (next_len) {
++				if (nxt_offs > c->leb_size) {
++					err = ubifs_update_one_lp(c, lnum,
++						LPROPS_NC, 0, 0, LPROPS_TAKEN);
++					if (err)
++						return err;
++					lnum = -1;
++				}
++				used -= blen;
++				if (used < 0)
++					used = 0;
++				avail = buf_len - used;
++				memmove(c->cbuf, c->cbuf + blen, used);
++				continue;
++			}
++		}
++		break;
++	}
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++	if (lnum != c->new_ihead_lnum || buf_offs != c->new_ihead_offs) {
++		ubifs_err("inconsistent ihead");
++		return -EINVAL;
++	}
++#endif
++
++	c->ihead_lnum = lnum;
++	c->ihead_offs = buf_offs;
++
++	return 0;
++}
++
++/**
++ * free_obsolete_znodes - free obsolete znodes.
++ * @c: UBIFS file-system description object
++ *
++ * At the end of commit end, obsolete znodes are freed.
++ */
++static void free_obsolete_znodes(struct ubifs_info *c)
++{
++	struct ubifs_znode *znode, *cnext;
++
++	cnext = c->cnext;
++	do {
++		znode = cnext;
++		cnext = znode->cnext;
++		if (test_bit(OBSOLETE_ZNODE, &znode->flags))
++			kfree(znode);
++		else {
++			znode->cnext = NULL;
++			atomic_long_inc(&c->clean_zn_cnt);
++			atomic_long_inc(&ubifs_clean_zn_cnt);
++		}
++	} while (cnext != c->cnext);
++}
++
++/**
++ * return_gap_lebs - return LEBs used by the in-gap commit method.
++ * @c: UBIFS file-system description object
++ *
++ * This function clears the "taken" flag for the LEBs which were used by the
++ * "commit in-the-gaps" method.
++ */
++static int return_gap_lebs(struct ubifs_info *c)
++{
++	int *p, err;
++
++	if (!c->gap_lebs)
++		return 0;
++
++	dbg_cmt("");
++	for (p = c->gap_lebs; *p != -1; p++) {
++		err = ubifs_change_one_lp(c, *p, LPROPS_NC, LPROPS_NC, 0,
++					  LPROPS_TAKEN, 0);
++		if (err)
++			return err;
++	}
++
++	kfree(c->gap_lebs);
++	c->gap_lebs = NULL;
++	return 0;
++}
++
++/**
++ * ubifs_tnc_end_commit - update the TNC for commit end.
++ * @c: UBIFS file-system description object
++ *
++ * Write the dirty znodes.
++ */
++int ubifs_tnc_end_commit(struct ubifs_info *c)
++{
++	int err;
++
++	if (!c->cnext)
++		return 0;
++
++	err = return_gap_lebs(c);
++	if (err)
++		return err;
++
++	err = write_index(c);
++	if (err)
++		return err;
++
++	mutex_lock(&c->tnc_mutex);
++
++	dbg_cmt("TNC height is %d", c->zroot.znode->level + 1);
++
++	free_obsolete_znodes(c);
++
++	c->cnext = NULL;
++	kfree(c->ilebs);
++	c->ilebs = NULL;
++
++	mutex_unlock(&c->tnc_mutex);
++
++	return 0;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/tnc_misc.c avr32-2.6/fs/ubifs/tnc_misc.c
+--- linux-2.6.25.6/fs/ubifs/tnc_misc.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/tnc_misc.c	2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,496 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Adrian Hunter
++ *          Artem Bityutskiy (Битюцкий Артём)
++ */
++
++/*
++ * This file contains miscelanious TNC-related functions shared betweend
++ * different files. This file does not form any logically separate TNC
++ * sub-system. The file was created because there is a lot of TNC code and
++ * putting it all in one file would make that file too big and unreadable.
++ */
++
++#include "ubifs.h"
++
++/**
++ * ubifs_tnc_levelorder_next - next TNC tree element in levelorder traversal.
++ * @zr: root of the subtree to traverse
++ * @znode: previous znode
++ *
++ * This function implements levelorder TNC traversal. The LNC is ignored.
++ * Returns the next element or %NULL if @znode is already the last one.
++ */
++struct ubifs_znode *ubifs_tnc_levelorder_next(struct ubifs_znode *zr,
++					      struct ubifs_znode *znode)
++{
++	int level, iip, level_search = 0;
++	struct ubifs_znode *zn;
++
++	ubifs_assert(zr);
++
++	if (unlikely(!znode))
++		return zr;
++
++	if (unlikely(znode == zr)) {
++		if (znode->level == 0)
++			return NULL;
++		return ubifs_tnc_find_child(zr, 0);
++	}
++
++	level = znode->level;
++
++	iip = znode->iip;
++	while (1) {
++		ubifs_assert(znode->level <= zr->level);
++
++		/*
++		 * First walk up until there is a znode with next branch to
++		 * look at.
++		 */
++		while (znode->parent != zr && iip >= znode->parent->child_cnt) {
++			znode = znode->parent;
++			iip = znode->iip;
++		}
++
++		if (unlikely(znode->parent == zr &&
++			     iip >= znode->parent->child_cnt)) {
++			/* This level is done, switch to the lower one */
++			level -= 1;
++			if (level_search || level < 0)
++				/*
++				 * We were already looking for znode at lower
++				 * level ('level_search'). As we are here
++				 * again, it just does not exist. Or all levels
++				 * were finished ('level < 0').
++				 */
++				return NULL;
++
++			level_search = 1;
++			iip = -1;
++			znode = ubifs_tnc_find_child(zr, 0);
++			ubifs_assert(znode);
++		}
++
++		/* Switch to the next index */
++		zn = ubifs_tnc_find_child(znode->parent, iip + 1);
++		if (!zn) {
++			/* No more children to look at, we have walk up */
++			iip = znode->parent->child_cnt;
++			continue;
++		}
++
++		/* Walk back down to the level we came from ('level') */
++		while (zn->level != level) {
++			znode = zn;
++			zn = ubifs_tnc_find_child(zn, 0);
++			if (!zn) {
++				/*
++				 * This path is not too deep so it does not
++				 * reach 'level'. Try next path.
++				 */
++				iip = znode->iip;
++				break;
++			}
++		}
++
++		if (zn) {
++			ubifs_assert(zn->level >= 0);
++			return zn;
++		}
++	}
++}
++
++/**
++ * ubifs_search_zbranch - search znode branch.
++ * @c: UBIFS file-system description object
++ * @znode: znode to search in
++ * @key: key to search for
++ * @n: znode branch slot number is returned here
++ *
++ * This is a helper function which search branch with key @key in @znode using
++ * binary search. The result of the search may be:
++ *   o exact match, then %1 is returned, and the slot number of the branch is
++ *     stored in @n;
++ *   o no exact match, then %0 is returned and the slot number of the left
++ *     closest branch is returned in @n; the slot if all keys in this znode are
++ *     greater than @key, then %-1 is returned in @n.
++ */
++int ubifs_search_zbranch(const struct ubifs_info *c,
++			 const struct ubifs_znode *znode,
++			 const union ubifs_key *key, int *n)
++{
++	int beg = 0, end = znode->child_cnt, uninitialized_var(mid);
++	int uninitialized_var(cmp);
++	const struct ubifs_zbranch *zbr = &znode->zbranch[0];
++
++	ubifs_assert(end > beg);
++
++	while (end > beg) {
++		mid = (beg + end) >> 1;
++		cmp = keys_cmp(c, key, &zbr[mid].key);
++		if (cmp > 0)
++			beg = mid + 1;
++		else if (cmp < 0)
++			end = mid;
++		else {
++			*n = mid;
++			return 1;
++		}
++	}
++
++	*n = end - 1;
++
++	/* The insert point is after *n */
++	ubifs_assert(*n >= -1 && *n < znode->child_cnt);
++	if (*n == -1)
++		ubifs_assert(keys_cmp(c, key, &zbr[0].key) < 0);
++	else
++		ubifs_assert(keys_cmp(c, key, &zbr[*n].key) > 0);
++	if (*n + 1 < znode->child_cnt)
++		ubifs_assert(keys_cmp(c, key, &zbr[*n + 1].key) < 0);
++
++	return 0;
++}
++
++/**
++ * ubifs_tnc_postorder_first - find first znode to do postorder tree traversal.
++ * @znode: znode to start at (root of the sub-tree to traverse)
++ *
++ * Find the lowest leftmost znode in a subtree of the TNC tree. The LNC is
++ * ignored.
++ */
++struct ubifs_znode *ubifs_tnc_postorder_first(struct ubifs_znode *znode)
++{
++	if (unlikely(!znode))
++		return NULL;
++
++	while (znode->level > 0) {
++		struct ubifs_znode *child;
++
++		child = ubifs_tnc_find_child(znode, 0);
++		if (!child)
++			return znode;
++		znode = child;
++	}
++
++	return znode;
++}
++
++/**
++ * ubifs_tnc_postorder_next - next TNC tree element in postorder traversal.
++ * @znode: previous znode
++ *
++ * This function implements postorder TNC traversal. The LNC is ignored.
++ * Returns the next element or %NULL if @znode is already the last one.
++ */
++struct ubifs_znode *ubifs_tnc_postorder_next(struct ubifs_znode *znode)
++{
++	struct ubifs_znode *zn;
++
++	ubifs_assert(znode);
++	if (unlikely(!znode->parent))
++		return NULL;
++
++	/* Switch to the next index in the parent */
++	zn = ubifs_tnc_find_child(znode->parent, znode->iip + 1);
++	if (!zn)
++		/* This is in fact the last child, return parent */
++		return znode->parent;
++
++	/* Go to the first znode in this new subtree */
++	return ubifs_tnc_postorder_first(zn);
++}
++
++/**
++ * ubifs_destroy_tnc_subtree - destroy all znodes connected to a subtree.
++ * @znode: znode defining subtree to destroy
++ *
++ * This function destroys subtree of the TNC tree. Returns number of clean
++ * znodes in the subtree.
++ */
++long ubifs_destroy_tnc_subtree(struct ubifs_znode *znode)
++{
++	struct ubifs_znode *zn = ubifs_tnc_postorder_first(znode);
++	long clean_freed = 0;
++	int n;
++
++	ubifs_assert(zn);
++	while (1) {
++		for (n = 0; n < zn->child_cnt; n++) {
++			if (!zn->zbranch[n].znode)
++				continue;
++
++			if (zn->level > 0 &&
++			    !ubifs_zn_dirty(zn->zbranch[n].znode))
++				clean_freed += 1;
++
++			cond_resched();
++			kfree(zn->zbranch[n].znode);
++		}
++
++		if (zn == znode) {
++			if (!ubifs_zn_dirty(zn))
++				clean_freed += 1;
++			kfree(zn);
++			return clean_freed;
++		}
++
++		zn = ubifs_tnc_postorder_next(zn);
++	}
++}
++
++/**
++ * read_znode - read an indexing node from flash and fill znode.
++ * @c: UBIFS file-system description object
++ * @lnum: LEB of the indexing node to read
++ * @offs: node offset
++ * @len: node length
++ * @znode: znode to read to
++ *
++ * This function reads an indexing node from the flash media and fills znode
++ * with the read data. Returns zero in case of success and a negative error
++ * code in case of failure. The read indexing node is validated and if anything
++ * is wrong with it, this function prints complaint messages and returns
++ * %-EINVAL.
++ */
++static int read_znode(struct ubifs_info *c, int lnum, int offs, int len,
++		      struct ubifs_znode *znode)
++{
++	int i, err, type, cmp;
++	struct ubifs_idx_node *idx;
++
++	idx = kmalloc(c->max_idx_node_sz, GFP_NOFS);
++	if (!idx)
++		return -ENOMEM;
++
++	err = ubifs_read_node(c, idx, UBIFS_IDX_NODE, len, lnum, offs);
++	if (err < 0) {
++		kfree(idx);
++		return err;
++	}
++
++	znode->child_cnt = le16_to_cpu(idx->child_cnt);
++	znode->level = le16_to_cpu(idx->level);
++
++	dbg_tnc("LEB %d:%d, level %d, %d branch",
++		lnum, offs, znode->level, znode->child_cnt);
++
++	if (znode->child_cnt > c->fanout || znode->level > UBIFS_MAX_LEVELS) {
++		dbg_err("current fanout %d, branch count %d",
++			c->fanout, znode->child_cnt);
++		dbg_err("max levels %d, znode level %d",
++			UBIFS_MAX_LEVELS, znode->level);
++		err = 1;
++		goto out_dump;
++	}
++
++	for (i = 0; i < znode->child_cnt; i++) {
++		const struct ubifs_branch *br = ubifs_idx_branch(c, idx, i);
++		struct ubifs_zbranch *zbr = &znode->zbranch[i];
++
++		key_read(c, &br->key, &zbr->key);
++		zbr->lnum = le32_to_cpu(br->lnum);
++		zbr->offs = le32_to_cpu(br->offs);
++		zbr->len  = le32_to_cpu(br->len);
++		zbr->znode = NULL;
++
++		/* Validate branch */
++
++		if (zbr->lnum < c->main_first ||
++		    zbr->lnum >= c->leb_cnt || zbr->offs < 0 ||
++		    zbr->offs + zbr->len > c->leb_size || zbr->offs & 7) {
++			dbg_err("bad branch %d", i);
++			err = 2;
++			goto out_dump;
++		}
++
++		switch (key_type(c, &zbr->key)) {
++		case UBIFS_INO_KEY:
++		case UBIFS_DATA_KEY:
++		case UBIFS_DENT_KEY:
++		case UBIFS_XENT_KEY:
++			break;
++		default:
++			dbg_msg("bad key type at slot %d: %s", i,
++				DBGKEY(&zbr->key));
++			err = 3;
++			goto out_dump;
++		}
++
++		if (znode->level)
++			continue;
++
++		type = key_type(c, &zbr->key);
++		if (c->ranges[type].max_len == 0) {
++			if (zbr->len != c->ranges[type].len) {
++				dbg_err("bad target node (type %d) length (%d)",
++					type, zbr->len);
++				dbg_err("have to be %d", c->ranges[type].len);
++				err = 4;
++				goto out_dump;
++			}
++		} else if (zbr->len < c->ranges[type].min_len ||
++			   zbr->len > c->ranges[type].max_len) {
++			dbg_err("bad target node (type %d) length (%d)",
++				type, zbr->len);
++			dbg_err("have to be in range of %d-%d",
++				c->ranges[type].min_len,
++				c->ranges[type].max_len);
++			err = 5;
++			goto out_dump;
++		}
++	}
++
++	/*
++	 * Ensure that the next key is greater or equivalent to the
++	 * previous one.
++	 */
++	for (i = 0; i < znode->child_cnt - 1; i++) {
++		const union ubifs_key *key1, *key2;
++
++		key1 = &znode->zbranch[i].key;
++		key2 = &znode->zbranch[i + 1].key;
++
++		cmp = keys_cmp(c, key1, key2);
++		if (cmp > 0) {
++			dbg_err("bad key order (keys %d and %d)", i, i + 1);
++			err = 6;
++			goto out_dump;
++		} else if (cmp == 0 && !is_hash_key(c, key1)) {
++			/* These can only be keys with colliding hash */
++			dbg_err("keys %d and %d are not hashed but equivalent",
++				i, i + 1);
++			err = 7;
++			goto out_dump;
++		}
++	}
++
++	kfree(idx);
++	return 0;
++
++out_dump:
++	ubifs_err("bad indexing node at LEB %d:%d, error %d", lnum, offs, err);
++	dbg_dump_node(c, idx);
++	kfree(idx);
++	return -EINVAL;
++}
++
++/**
++ * ubifs_load_znode - load znode to TNC cache.
++ * @c: UBIFS file-system description object
++ * @zbr: znode branch
++ * @parent: znode's parent
++ * @iip: index in parent
++ *
++ * This function loads znode pointed to by @zbr into the TNC cache and
++ * returns pointer to it in case of success and a negative error code in case
++ * of failure.
++ */
++struct ubifs_znode *ubifs_load_znode(struct ubifs_info *c,
++				     struct ubifs_zbranch *zbr,
++				     struct ubifs_znode *parent, int iip)
++{
++	int err;
++	struct ubifs_znode *znode;
++
++	ubifs_assert(!zbr->znode);
++	/*
++	 * A slab cache is not presently used for znodes because the znode size
++	 * depends on the fanout which is stored in the superblock.
++	 */
++	znode = kzalloc(c->max_znode_sz, GFP_NOFS);
++	if (!znode)
++		return ERR_PTR(-ENOMEM);
++
++	err = read_znode(c, zbr->lnum, zbr->offs, zbr->len, znode);
++	if (err)
++		goto out;
++
++	atomic_long_inc(&c->clean_zn_cnt);
++
++	/*
++	 * Increment the global clean znode counter as well. It is OK that
++	 * global and per-FS clean znode counters may be inconsistent for some
++	 * short time (because we might be preempted at this point), the global
++	 * one is only used in shrinker.
++	 */
++	atomic_long_inc(&ubifs_clean_zn_cnt);
++
++	zbr->znode = znode;
++	znode->parent = parent;
++	znode->time = get_seconds();
++	znode->iip = iip;
++
++	return znode;
++
++out:
++	kfree(znode);
++	return ERR_PTR(err);
++}
++
++/**
++ * ubifs_tnc_read_node - read a leaf node from the flash media.
++ * @c: UBIFS file-system description object
++ * @zbr: key and position of the node
++ * @node: node is returned here
++ *
++ * This function reads a node defined by @zbr from the flash media. Returns
++ * zero in case of success or a negative negative error code in case of
++ * failure.
++ */
++int ubifs_tnc_read_node(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++			void *node)
++{
++	union ubifs_key key1, *key = &zbr->key;
++	int err, type = key_type(c, key);
++	struct ubifs_wbuf *wbuf;
++
++	ubifs_assert(!zbr->leaf);
++
++	/*
++	 * 'zbr' has to point to on-flash node. The node may sit in a bud and
++	 * may even be in a write buffer, so we have to take care about this.
++	 */
++	wbuf = ubifs_get_wbuf(c, zbr->lnum);
++	if (wbuf)
++		err = ubifs_read_node_wbuf(wbuf, node, type, zbr->len,
++					   zbr->lnum, zbr->offs);
++	else
++		err = ubifs_read_node(c, node, type, zbr->len, zbr->lnum,
++				      zbr->offs);
++
++	if (err) {
++		dbg_tnc("key %s", DBGKEY(key));
++		return err;
++	}
++
++	/* Make sure the key of the read node is correct */
++	key_read(c, key, &key1);
++	if (memcmp(node + UBIFS_KEY_OFFSET, &key1, c->key_len)) {
++		ubifs_err("bad key in node at LEB %d:%d",
++			  zbr->lnum, zbr->offs);
++		dbg_tnc("looked for key %s found node's key %s",
++			DBGKEY(key), DBGKEY1(&key1));
++		dbg_dump_node(c, node);
++		return -EINVAL;
++	}
++
++	return 0;
++}
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/ubifs.h avr32-2.6/fs/ubifs/ubifs.h
+--- linux-2.6.25.6/fs/ubifs/ubifs.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/ubifs.h	2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,1605 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/* Implementation version 0.7 */
++
++#ifndef __UBIFS_H__
++#define __UBIFS_H__
++
++#include <asm/div64.h>
++#include <linux/statfs.h>
++#include <linux/fs.h>
++#include <linux/err.h>
++#include <linux/sched.h>
++#include <linux/vmalloc.h>
++#include <linux/spinlock.h>
++#include <linux/mutex.h>
++#include <linux/rwsem.h>
++#include <linux/mtd/ubi.h>
++#include <linux/pagemap.h>
++#include <linux/backing-dev.h>
++#include "ubifs-media.h"
++
++/* Version of this UBIFS implementation */
++#define UBIFS_VERSION 1
++
++/* Normal UBIFS messages */
++#define ubifs_msg(fmt, ...) \
++		printk(KERN_NOTICE "UBIFS: " fmt "\n", ##__VA_ARGS__)
++/* UBIFS error messages */
++#define ubifs_err(fmt, ...)                                                  \
++	printk(KERN_ERR "UBIFS error (pid %d): %s: " fmt "\n", current->pid, \
++	       __func__, ##__VA_ARGS__)
++/* UBIFS warning messages */
++#define ubifs_warn(fmt, ...)                                         \
++	printk(KERN_WARNING "UBIFS warning (pid %d): %s: " fmt "\n", \
++	       current->pid, __func__, ##__VA_ARGS__)
++
++/* UBIFS file system VFS magic number */
++#define UBIFS_SUPER_MAGIC 0x24051905
++
++/* Number of UBIFS blocks per VFS page */
++#define UBIFS_BLOCKS_PER_PAGE (PAGE_CACHE_SIZE / UBIFS_BLOCK_SIZE)
++#define UBIFS_BLOCKS_PER_PAGE_SHIFT (PAGE_CACHE_SHIFT - UBIFS_BLOCK_SHIFT)
++
++/* "File system end of life" sequence number watermark */
++#define SQNUM_WARN_WATERMARK 0xFFFFFFFF00000000ULL
++#define SQNUM_WATERMARK      0xFFFFFFFFFF000000ULL
++
++/* Minimum amount of data UBIFS writes to the flash */
++#define MIN_WRITE_SZ (UBIFS_DATA_NODE_SZ + 8)
++
++/*
++ * Currently we do not support inode number overlapping and re-using, so this
++ * watermark defines dangerous inode number level. This should be fixed later,
++ * although it is difficult to exceed current limit. Another option is to use
++ * 64-bit inode numbers, but this means more overhead.
++ */
++#define INUM_WARN_WATERMARK 0xFFF00000
++#define INUM_WATERMARK      0xFFFFFF00
++
++/* Largest key size supported in this implementation */
++#define CUR_MAX_KEY_LEN UBIFS_SK_LEN
++
++/* Maximum number of entries in each LPT (LEB category) heap */
++#define LPT_HEAP_SZ 256
++
++/*
++ * Background thread name pattern. The numbers are UBI device and volume
++ * numbers.
++ */
++#define BGT_NAME_PATTERN "ubifs_bgt%d_%d"
++
++/* Default write-buffer synchronization timeout (5 secs) */
++#define DEFAULT_WBUF_TIMEOUT (5 * HZ)
++
++/* Maximum possible inode number (only 32-bit inodes are supported now) */
++#define MAX_INUM 0xFFFFFFFF
++
++/* Number of non-data journal heads */
++#define NONDATA_JHEADS_CNT 2
++
++/* Garbage collector head */
++#define GCHD   0
++/* Base journal head number */
++#define BASEHD 1
++/* First "general purpose" journal head */
++#define DATAHD 2
++
++/* 'No change' value for 'ubifs_change_lp()' */
++#define LPROPS_NC 0x80000001
++
++/*
++ * There is no notion of truncation key because truncation nodes do not exist
++ * in TNC. However, when replaying, it is handy to introduce fake "truncation"
++ * keys for truncation nodes because the code becomes simpler. So we define
++ * %UBIFS_TRUN_KEY type.
++ */
++#define UBIFS_TRUN_KEY UBIFS_KEY_TYPES_CNT
++
++/*
++ * How much a directory entry/extended attribute entry adds to the parent/host
++ * inode.
++ */
++#define CALC_DENT_SIZE(name_len) ALIGN(UBIFS_DENT_NODE_SZ + (name_len) + 1, 8)
++
++/* How much an extended attribute adds to the host inode */
++#define CALC_XATTR_BYTES(data_len) ALIGN(UBIFS_INO_NODE_SZ + (data_len) + 1, 8)
++
++/*
++ * Znodes which were not touched for 'OLD_ZNODE_AGE' seconds are considered
++ * "old", and znode which were touched last 'YOUNG_ZNODE_AGE' seconds ago are
++ * considered "young". This is used by shrinker when selecting znode to trim
++ * off.
++ */
++#define OLD_ZNODE_AGE 20
++#define YOUNG_ZNODE_AGE 5
++
++/*
++ * Some compressors, like LZO, may end up with more data then the input buffer.
++ * So UBIFS always allocates larger output buffer, to be sure the compressor
++ * will not corrupt memory in case of worst case compression.
++ */
++#define WORST_COMPR_FACTOR 2
++
++/* Maximum expected tree height for use by bottom_up_buf */
++#define BOTTOM_UP_HEIGHT 64
++
++/*
++ * Znode flags (actually, bit numbers which store the flags).
++ *
++ * DIRTY_ZNODE: znode is dirty
++ * COW_ZNODE: znode is being committed and a new instance of this znode has to
++ *            be created before changing this znode
++ * OBSOLETE_ZNODE: znode is obsolete, which means it was deleted, but it is
++ *                 still in the commit list and the ongoing commit operation
++ *                 will commit it, and delete this znode after it is done
++ */
++enum {
++	DIRTY_ZNODE    = 0,
++	COW_ZNODE      = 1,
++	OBSOLETE_ZNODE = 2
++};
++
++/*
++ * Commit states.
++ *
++ * COMMIT_RESTING: commit is not wanted
++ * COMMIT_BACKGROUND: background commit has been requested
++ * COMMIT_REQUIRED: commit is required
++ * COMMIT_RUNNING_BACKGROUND: background commit is running
++ * COMMIT_RUNNING_REQUIRED: commit is running and it is required
++ * COMMIT_BROKEN: commit failed
++ */
++enum {
++	COMMIT_RESTING = 0,
++	COMMIT_BACKGROUND,
++	COMMIT_REQUIRED,
++	COMMIT_RUNNING_BACKGROUND,
++	COMMIT_RUNNING_REQUIRED,
++	COMMIT_BROKEN,
++};
++
++/*
++ * 'ubifs_scan_a_node()' return values.
++ *
++ * SCANNED_GARBAGE:  scanned garbage
++ * SCANNED_EMPTY_SPACE: scanned empty space
++ * SCANNED_A_NODE: scanned a valid node
++ * SCANNED_A_CORRUPT_NODE: scanned a corrupted node
++ * SCANNED_A_BAD_PAD_NODE: scanned a padding node with invalid pad length
++ *
++ * Greater than zero means: 'scanned that number of padding bytes'
++ */
++enum {
++	SCANNED_GARBAGE        = 0,
++	SCANNED_EMPTY_SPACE    = -1,
++	SCANNED_A_NODE         = -2,
++	SCANNED_A_CORRUPT_NODE = -3,
++	SCANNED_A_BAD_PAD_NODE = -4,
++};
++
++/*
++ * LPT cnode flag bits.
++ *
++ * DIRTY_CNODE: cnode is dirty
++ * COW_CNODE: cnode is being committed and must be copied before writing
++ * OBSOLETE_CNODE: cnode is being committed and has been copied (or deleted),
++ * so it can (and must) be freed when the commit is finished
++ */
++enum {
++	DIRTY_CNODE    = 0,
++	COW_CNODE      = 1,
++	OBSOLETE_CNODE = 2,
++};
++
++/*
++ * Dirty flag bits (lpt_drty_flgs) for LPT special nodes.
++ *
++ * LTAB_DIRTY: ltab node is dirty
++ * LSAVE_DIRTY: lsave node is dirty
++ */
++enum {
++	LTAB_DIRTY  = 1,
++	LSAVE_DIRTY = 2,
++};
++
++/*
++ * Return codes used by the garbage collector.
++ * @LEB_FREED: the logical eraseblock was freed and is ready to use
++ * @LEB_FREED_IDX: indexing LEB was freed and can be used only after the commit
++ * @LEB_RETAINED: the logical eraseblock was freed and retained for GC purposes
++ */
++enum {
++	LEB_FREED,
++	LEB_FREED_IDX,
++	LEB_RETAINED,
++};
++
++/**
++ * struct ubifs_old_idx - index node obsoleted since last commit start.
++ * @rb: rb-tree node
++ * @lnum: LEB number of obsoleted index node
++ * @offs: offset of obsoleted index node
++ */
++struct ubifs_old_idx {
++	struct rb_node rb;
++	int lnum;
++	int offs;
++};
++
++/* The below union makes it easier to deal with keys */
++union ubifs_key {
++	uint8_t u8[CUR_MAX_KEY_LEN];
++	uint32_t u32[CUR_MAX_KEY_LEN/4];
++	uint64_t u64[CUR_MAX_KEY_LEN/8];
++	__le32 j32[CUR_MAX_KEY_LEN/4];
++};
++
++/**
++ * struct ubifs_scan_node - UBIFS scanned node information.
++ * @list: list of scanned nodes
++ * @key: key of node scanned (if it has one)
++ * @sqnum: sequence number
++ * @type: type of node scanned
++ * @offs: offset with LEB of node scanned
++ * @len: length of node scanned
++ * @node: raw node
++ */
++struct ubifs_scan_node {
++	struct list_head list;
++	union ubifs_key key;
++	unsigned long long sqnum;
++	int type;
++	int offs;
++	int len;
++	void *node;
++};
++
++/**
++ * struct ubifs_scan_leb - UBIFS scanned LEB information.
++ * @lnum: logical eraseblock number
++ * @nodes_cnt: number of nodes scanned
++ * @nodes: list of struct ubifs_scan_node
++ * @endpt: end point (and therefore the start of empty space)
++ * @ecc: read returned -EBADMSG
++ * @buf: buffer containing entire LEB scanned
++ */
++struct ubifs_scan_leb {
++	int lnum;
++	int nodes_cnt;
++	struct list_head nodes;
++	int endpt;
++	int ecc;
++	void *buf;
++};
++
++/**
++ * struct ubifs_gced_idx_leb - garbage-collected indexing LEB.
++ * @list: list
++ * @lnum: LEB number
++ * @unmap: OK to unmap this LEB
++ *
++ * This data structure is used to temporary store garbage-collected indexing
++ * LEBs - they are not released immediately, but only after the next commit.
++ * This is needed to guarantee recoverability.
++ */
++struct ubifs_gced_idx_leb {
++	struct list_head list;
++	int lnum;
++	int unmap;
++};
++
++/**
++ * struct ubifs_inode - UBIFS in-memory inode description.
++ * @vfs_inode: VFS inode description object
++ * @creat_sqnum: sequence number at time of creation
++ * @xattr_size: summarized size of all extended attributes in bytes, protected
++ *              by @inode->i_lock
++ * @xattr_cnt: count of extended attributes this inode has
++ * @xattr_names: sum of lengths of all extended attribute names belonging to
++ *               this inode
++ * @dirty: non-zero if the inode is dirty
++ * @xattr: non-zero if this is an extended attribute inode
++ * @budgeted: non-zero if the inode has been budgeted (used for debugging)
++ * @budg_mutex: serializes inode budgeting and write-back
++ * @flags: inode flags (@UBIFS_COMPR_FL, etc)
++ * @compr_type: default compression type used for this inode
++ * @data_len: length of the data attached to the inode
++ * @data: inode's data
++ *
++ * UBIFS has its own inode mutex, besides the VFS 'i_mutex'. The reason for
++ * this is budgeting - UBIFS has to budget each operation. So, if an operation
++ * is going to mark an inode dirty, it has to allocate budget for this. It
++ * cannot just mark it dirty because there is no guarantee there will be enough
++ * flash space when it is time to write the inode back. This means that UBIFS
++ * has to have full control over "clean <-> dirty" transitions of inodes (and
++ * pages actually, but it is easy for pages, because we have
++ * 'ubifs_prepare_write()' which is called _before_ every page change). But
++ * unfortunately, VFS marks inodes dirty in many places, and it does not ask
++ * the file-system if it is allowed to do so (there is a notifier, but it is
++ * not enough), i.e., there is no mechanism to synchronize with this. So we
++ * introduce our own dirty flag to UBIFS inodes and our own inode mutex to
++ * serialize "clean <-> dirty" transitions.
++ */
++struct ubifs_inode {
++	struct inode vfs_inode;
++	unsigned long long creat_sqnum;
++	long long xattr_size;
++	int xattr_cnt;
++	int xattr_names;
++	unsigned int dirty:1;
++	unsigned int xattr:1;
++#ifdef CONFIG_UBIFS_FS_DEBUG
++	unsigned int budgeted:1;
++#endif
++	struct mutex budg_mutex;
++	int flags;
++	int compr_type;
++	int data_len;
++	void *data;
++};
++
++/**
++ * struct ubifs_unclean_leb - records a LEB recovered under read-only mode.
++ * @list: list
++ * @lnum: LEB number of recovered LEB
++ * @endpt: offset where recovery ended
++ *
++ * This structure records a LEB identified during recovery that needs to be
++ * cleaned but was not because UBIFS was mounted read-only. The information
++ * is used to clean the LEB when remounting to read-write mode.
++ */
++struct ubifs_unclean_leb {
++	struct list_head list;
++	int lnum;
++	int endpt;
++};
++
++/*
++ * LEB properties flags.
++ *
++ * LPROPS_UNCAT: not categorized
++ * LPROPS_DIRTY: dirty > 0, not index
++ * LPROPS_DIRTY_IDX: dirty + free > UBIFS_CH_SZ and index
++ * LPROPS_FREE: free > 0, not empty, not index
++ * LPROPS_HEAP_CNT: number of heaps used for storing categorized LEBs
++ * LPROPS_EMPTY: LEB is empty, not taken
++ * LPROPS_FREEABLE: free + dirty == leb_size, not index, not taken
++ * LPROPS_FRDI_IDX: free + dirty == leb_size and index, may be taken
++ * LPROPS_CAT_MASK: mask for the LEB categories above
++ * LPROPS_TAKEN: LEB was taken (this flag is not saved on the media)
++ * LPROPS_INDEX: LEB contains indexing nodes (this flag also exists on flash)
++ */
++enum {
++	LPROPS_UNCAT     =  0,
++	LPROPS_DIRTY     =  1,
++	LPROPS_DIRTY_IDX =  2,
++	LPROPS_FREE      =  3,
++	LPROPS_HEAP_CNT  =  3,
++	LPROPS_EMPTY     =  4,
++	LPROPS_FREEABLE  =  5,
++	LPROPS_FRDI_IDX  =  6,
++	LPROPS_CAT_MASK  = 15,
++	LPROPS_TAKEN     = 16,
++	LPROPS_INDEX     = 32,
++};
++
++/**
++ * struct ubifs_lprops - logical eraseblock properties.
++ * @free: amount of free space in bytes
++ * @dirty: amount of dirty space in bytes
++ * @flags: LEB properties flags (see above)
++ * @lnum: LEB number
++ * @list: list of same-category lprops (for LPROPS_EMPTY and LPROPS_FREEABLE)
++ * @hpos: heap position in heap of same-category lprops (other categories)
++ */
++struct ubifs_lprops {
++	int free;
++	int dirty;
++	int flags;
++	int lnum;
++	union {
++		struct list_head list;
++		int hpos;
++	};
++};
++
++/**
++ * struct ubifs_lpt_lprops - LPT logical eraseblock properties.
++ * @free: amount of free space in bytes
++ * @dirty: amount of dirty space in bytes
++ * @tgc: trivial GC flag (1 => unmap after commit end)
++ * @cmt: commit flag (1 => reserved for commit)
++ */
++struct ubifs_lpt_lprops {
++	int free;
++	int dirty;
++	unsigned tgc : 1;
++	unsigned cmt : 1;
++};
++
++/**
++ * struct ubifs_lp_stats - statistics of eraseblocks in the main area.
++ * @empty_lebs: number of empty LEBs
++ * @taken_empty_lebs: number of taken LEBs
++ * @idx_lebs: number of indexing LEBs
++ * @total_free: total free space in bytes
++ * @total_dirty: total dirty space in bytes
++ * @total_used: total used space in bytes (includes only data LEBs)
++ * @total_dead: total dead space in bytes (includes only data LEBs)
++ * @total_dark: total dark space in bytes (includes only data LEBs)
++ *
++ * N.B. total_dirty and total_used are different to other total_* fields,
++ * because they account _all_ LEBs, not just data LEBs.
++ *
++ * 'taken_empty_lebs' counts the LEBs that are in the transient state of having
++ * been 'taken' for use but not yet written to. 'taken_empty_lebs' is needed
++ * to account correctly for gc_lnum, otherwise 'empty_lebs' could be used
++ * by itself (in which case 'unused_lebs' would be a better name). In the case
++ * of gc_lnum, it is 'taken' at mount time or whenever a LEB is retained by GC,
++ * but unlike other empty LEBs that are 'taken', it may not be written straight
++ * away (i.e. before the next commit start or unmount), so either gc_lnum must
++ * be specially accounted for, or the current approach followed i.e. count it
++ * under 'taken_empty_lebs'.
++ */
++struct ubifs_lp_stats {
++	int empty_lebs;
++	int taken_empty_lebs;
++	int idx_lebs;
++	long long total_free;
++	long long total_dirty;
++	long long total_used;
++	long long total_dead;
++	long long total_dark;
++};
++
++struct ubifs_nnode;
++
++/**
++ * struct ubifs_cnode - LEB Properties Tree common node.
++ * @parent: parent nnode
++ * @cnext: next cnode to commit
++ * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE)
++ * @iip: index in parent
++ * @level: level in the tree (zero for pnodes, greater than zero for nnodes)
++ * @num: node number
++ */
++struct ubifs_cnode {
++	struct ubifs_nnode *parent;
++	struct ubifs_cnode *cnext;
++	unsigned long flags;
++	int iip;
++	int level;
++	int num;
++};
++
++/**
++ * struct ubifs_pnode - LEB Properties Tree leaf node.
++ * @parent: parent nnode
++ * @cnext: next cnode to commit
++ * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE)
++ * @iip: index in parent
++ * @level: level in the tree (always zero for pnodes)
++ * @num: node number
++ * @lprops: LEB properties array
++ */
++struct ubifs_pnode {
++	struct ubifs_nnode *parent;
++	struct ubifs_cnode *cnext;
++	unsigned long flags;
++	int iip;
++	int level;
++	int num;
++	struct ubifs_lprops lprops[UBIFS_LPT_FANOUT];
++};
++
++/**
++ * struct ubifs_nbranch - LEB Properties Tree internal node branch.
++ * @lnum: LEB number of child
++ * @offs: offset of child
++ * @nnode: nnode child
++ * @pnode: pnode child
++ * @cnode: cnode child
++ */
++struct ubifs_nbranch {
++	int lnum;
++	int offs;
++	union {
++		struct ubifs_nnode *nnode;
++		struct ubifs_pnode *pnode;
++		struct ubifs_cnode *cnode;
++	};
++};
++
++/**
++ * struct ubifs_nnode - LEB Properties Tree internal node.
++ * @parent: parent nnode
++ * @cnext: next cnode to commit
++ * @flags: flags (%DIRTY_LPT_NODE or %OBSOLETE_LPT_NODE)
++ * @iip: index in parent
++ * @level: level in the tree (always greater than zero for nnodes)
++ * @num: node number
++ * @nbranch: branches to child nodes
++ */
++struct ubifs_nnode {
++	struct ubifs_nnode *parent;
++	struct ubifs_cnode *cnext;
++	unsigned long flags;
++	int iip;
++	int level;
++	int num;
++	struct ubifs_nbranch nbranch[UBIFS_LPT_FANOUT];
++};
++
++/**
++ * struct ubifs_lpt_heap - heap of categorized lprops.
++ * @arr: heap array
++ * @cnt: number in heap
++ * @max_cnt: maximum number allowed in heap
++ *
++ * There are %LPROPS_HEAP_CNT heaps.
++ */
++struct ubifs_lpt_heap {
++	struct ubifs_lprops **arr;
++	int cnt;
++	int max_cnt;
++};
++
++/*
++ * Return codes for LPT scan callback function.
++ *
++ * LPT_SCAN_CONTINUE: continue scanning
++ * LPT_SCAN_ADD: add the LEB properties scanned to the tree in memory
++ * LPT_SCAN_STOP: stop scanning
++ */
++enum {
++	LPT_SCAN_CONTINUE = 0,
++	LPT_SCAN_ADD = 1,
++	LPT_SCAN_STOP = 2,
++};
++
++struct ubifs_info;
++
++/* Callback used by the 'ubifs_lpt_scan_nolock()' function */
++typedef int (*ubifs_lpt_scan_callback)(struct ubifs_info *c,
++				       const struct ubifs_lprops *lprops,
++				       int in_tree, void *data);
++
++/**
++ * struct ubifs_wbuf - UBIFS write-buffer.
++ * @c: UBIFS file-system description object
++ * @buf: write-buffer (of min. flash I/O unit size)
++ * @lnum: logical eraseblock number the write-buffer points to
++ * @offs: write-buffer offset in this logical eraseblock
++ * @avail: number of bytes available in the write-buffer
++ * @used:  number of used bytes in the write-buffer
++ * @dtype: type of data stored in this LEB (%UBI_LONGTERM, %UBI_SHORTTERM,
++ * %UBI_UNKNOWN)
++ * @jhead: journal head the mutex belongs to (note, needed only to shut lockdep
++ * up by 'mutex_lock_nested()).
++ * @sync_callback: write-buffer synchronization callback
++ * @io_mutex: serializes write-buffer I/O
++ * @lock: serializes @buf, @lnum, @offs, @avail, @used, @next_ino and @inodes
++ * fields
++ * @timer: write-buffer timer
++ * @timeout: timer expire interval in jiffies
++ * @need_sync: it is set if its timer expired and needs sync
++ * @next_ino: points to the next position of the following inode number
++ * @inodes: stores the inode numbers of the nodes which are in wbuf
++ *
++ * The write-buffer synchronization callback is called when the write-buffer is
++ * synchronized in order to notify how much space was wasted due to
++ * write-buffer padding and how much free space is left in the LEB.
++ *
++ * Note: the fields @buf, @lnum, @offs, @avail and @used can be read under
++ * spin-lock or mutex because they are written under both mutex and spin-lock.
++ * @buf is appended to under mutex but overwritten under both mutex and
++ * spin-lock. Thus the data between @buf and @buf + @used can be read under
++ * spinlock.
++ */
++struct ubifs_wbuf {
++	struct ubifs_info *c;
++	void *buf;
++	int lnum;
++	int offs;
++	int avail;
++	int used;
++	int dtype;
++	int jhead;
++	int (*sync_callback)(struct ubifs_info *c, int lnum, int free, int pad);
++	struct mutex io_mutex;
++	spinlock_t lock;
++	struct timer_list timer;
++	int timeout;
++	int need_sync;
++	int next_ino;
++	ino_t *inodes;
++};
++
++/**
++ * struct ubifs_bud - bud logical eraseblock.
++ * @lnum: logical eraseblock number
++ * @start: where the (uncommitted) bud data starts
++ * @jhead: journal head number this bud belongs to
++ * @list: link in the list buds belonging to the same journal head
++ * @rb: link in the tree of all buds
++ */
++struct ubifs_bud {
++	int lnum;
++	int start;
++	int jhead;
++	struct list_head list;
++	struct rb_node rb;
++};
++
++/**
++ * struct ubifs_jhead - journal head.
++ * @wbuf: head's write-buffer
++ * @buds_list: list of bud LEBs belonging to this journal head
++ *
++ * Note, the @buds list is protected by the @c->buds_lock.
++ */
++struct ubifs_jhead {
++	struct ubifs_wbuf wbuf;
++	struct list_head buds_list;
++};
++
++/**
++ * struct ubifs_zbranch - key/coordinate/length branch stored in znodes.
++ * @key: key
++ * @znode: znode address in memory
++ * @lnum: LEB number of the indexing node
++ * @offs: offset of the indexing node within @lnum
++ * @len: target node length
++ */
++struct ubifs_zbranch {
++	union ubifs_key key;
++	union {
++		struct ubifs_znode *znode;
++		void *leaf;
++	};
++	int lnum;
++	int offs;
++	int len;
++};
++
++/**
++ * struct ubifs_znode - in-memory representation of an indexing node.
++ * @parent: parent znode or NULL if it is the root
++ * @cnext: next znode to commit
++ * @flags: znode flags (%DIRTY_ZNODE, %COW_ZNODE or %OBSOLETE_ZNODE)
++ * @time: last access time (seconds)
++ * @level: level of the entry in the TNC tree
++ * @child_cnt: count of child znodes
++ * @iip: index in parent's zbranch array
++ * @alt: lower bound of key range has altered i.e. child inserted at slot 0
++ * @lnum: LEB number of the corresponding indexing node
++ * @offs: offset of the corresponding indexing node
++ * @len: length  of the corresponding indexing node
++ * @zbranch: array of znode branches (@c->fanout elements)
++ */
++struct ubifs_znode {
++	struct ubifs_znode *parent;
++	struct ubifs_znode *cnext;
++	unsigned long flags;
++	unsigned long time;
++	int level;
++	int child_cnt;
++	int iip;
++	int alt;
++#ifdef CONFIG_UBIFS_FS_DEBUG
++	int lnum, offs, len;
++#endif
++	struct ubifs_zbranch zbranch[];
++};
++
++/**
++ * struct ubifs_node_range - node length range description data structure.
++ * @len: fixed node length
++ * @min_len: minimum possible node length
++ * @max_len: maximum possible node length
++ *
++ * If @max_len is %0, the node has fixed length @len.
++ */
++struct ubifs_node_range {
++	union {
++		int len;
++		int min_len;
++	};
++	int max_len;
++};
++
++/**
++ * struct ubifs_compressor - UBIFS compressor description structure.
++ * @compr_type: compressor type (%UBIFS_COMPR_LZO, etc)
++ * @cc: cryptoapi compressor handle
++ * @comp_mutex: mutex used during compression
++ * @decomp_mutex: mutex used during decompression
++ * @name: compressor name
++ * @capi_name: cryptoapi compressor name
++ */
++struct ubifs_compressor {
++	int compr_type;
++	struct crypto_comp *cc;
++	struct mutex *comp_mutex;
++	struct mutex *decomp_mutex;
++	const char *name;
++	const char *capi_name;
++};
++
++/**
++ * struct ubifs_budget_req - budget requirements of an operation.
++ *
++ * @new_ino: non-zero if the operation adds a new inode
++ * @dirtied_ino: how many inodes the operation makes dirty
++ * @new_page: non-zero if the operation adds a new page
++ * @dirtied_page: non-zero if the operation makes a page dirty
++ * @new_dent: non-zero if the operation adds a new directory entry
++ * @mod_dent: non-zero if the operation removes or modifies an existing
++ *            directory entry
++ * @new_ino_d: now much data newly created inode contains
++ * @dirtied_ino_d: now much data dirtied inode contains
++ * @idx_growth: how much the index will supposedly grow
++ * @data_growth: how much new data the operation will supposedly add
++ * @dd_growth: how much data that makes other data dirty the operation will
++ *             supposedly add
++ *
++ * @idx_growth, @data_growth and @dd_growth are not used in budget request. The
++ * budgeting subsystem caches index and data growth values there to avoid
++ * re-calculating them when the budget is released. However, if @idx_growth is
++ * %-1, it is calculated by the release function using other fields.
++ *
++ * An inode may contain 4KiB of data at max., thus the widths of @new_ino_d
++ * is 13 bits, and @dirtied_ino_d - 15, because up to 4 inodes may be made
++ * dirty by the re-name operation.
++ */
++struct ubifs_budget_req {
++	unsigned int new_ino:1;
++	unsigned int dirtied_ino:4;
++	unsigned int new_page:1;
++	unsigned int dirtied_page:1;
++	unsigned int new_dent:1;
++	unsigned int mod_dent:1;
++	unsigned int new_ino_d:13;
++	unsigned int dirtied_ino_d:15;
++	int idx_growth;
++	int data_growth;
++	int dd_growth;
++};
++
++/**
++ * struct ubifs_orphan - stores the inode number of an orphan.
++ * @rb: rb-tree node of rb-tree of orphans sorted by inode number
++ * @list: list head of list of orphans in order added
++ * @new_list: list head of list of orphans added since the last commit
++ * @cnext: next orphan to commit
++ * @dnext: next orphan to delete
++ * @inum: inode number
++ * @new: %1 => added since the last commit, otherwise %0
++ */
++struct ubifs_orphan {
++	struct rb_node rb;
++	struct list_head list;
++	struct list_head new_list;
++	struct ubifs_orphan *cnext;
++	struct ubifs_orphan *dnext;
++	ino_t inum;
++	int new;
++};
++
++/**
++ * struct ubifs_mount_opts - UBIFS-specific mount options information.
++ * @unmount_mode: selected unmount mode (%0 default, %1 normal, %2 fast)
++ */
++struct ubifs_mount_opts {
++	unsigned int unmount_mode:2;
++};
++
++/**
++ * struct ubifs_info - UBIFS file-system description data structure
++ * (per-superblock).
++ * @vfs_sb: VFS @struct super_block object
++ *
++ * @highest_inum: highest used inode number
++ * @vfs_gen: VFS inode generation counter
++ * @max_sqnum: current global sequence number
++ * @cmt_no: commit number (last successfully completed commit)
++ * @cnt_lock: protects @highest_inum, @vfs_gen, and @max_sqnum counters
++ * @fmt_version: UBIFS on-flash format version
++ * @uuid: UUID from super block
++ *
++ * @lhead_lnum: log head logical eraseblock number
++ * @lhead_offs: log head offset
++ * @ltail_lnum: log tail logical eraseblock number (offset is always 0)
++ * @log_mutex: protects the log, @lhead_lnum, @lhead_offs, @ltail_lnum, and
++ *             @bud_bytes
++ * @min_log_bytes: minimum required number of bytes in the log
++ * @cmt_bud_bytes: used during commit to temporarily amount of bytes in
++ *                 committed buds
++ *
++ * @buds: tree of all buds indexed by bud LEB number
++ * @bud_bytes: how many bytes of flash is used by buds
++ * @buds_lock: protects the @buds tree, @bud_bytes, and per-journal head bud
++ *             lists
++ * @jhead_cnt: count of journal heads
++ * @jheads: journal heads (head zero is base head)
++ * @max_bud_bytes: maximum number of bytes allowed in buds
++ * @bg_bud_bytes: number of bud bytes when background commit is initiated
++ * @old_buds: buds to be released after commit ends
++ * @max_bud_cnt: maximum number of buds
++ *
++ * @commit_sem: synchronizes committer with other processes
++ * @cmt_state: commit state
++ * @cs_lock: commit state lock
++ * @cmt_wq: wait queue to sleep on if the log is full and a commit is running
++ * @fast_unmount: do not run journal commit before unmounting
++ * @big_lpt: flag that LPT is too big to write whole during commit
++ *
++ * @tnc_mutex: protects the Tree Node Cache (TNC), @zroot, @cnext, @enext, and
++ *             @calc_idx_sz
++ * @zroot: zbranch which points to the root index node and znode
++ * @cnext: next znode to commit
++ * @enext: next znode to commit to empty space
++ * @gap_lebs: array of LEBs used by the in-gaps commit method
++ * @cbuf: commit buffer
++ * @ileb_buf: buffer for commit in-the-gaps method
++ * @ileb_len: length of data in ileb_buf
++ * @ihead_lnum: LEB number of index head
++ * @ihead_offs: offset of index head
++ * @ilebs: pre-allocated index LEBs
++ * @ileb_cnt: number of pre-allocated index LEBs
++ * @ileb_nxt: next pre-allocated index LEBs
++ * @old_idx: tree of index nodes obsoleted since the last commit start
++ * @bottom_up_buf: a buffer which is used by 'dirty_cow_bottom_up()' in tnc.c
++ * @new_ihead_lnum: used by debugging to check ihead_lnum
++ * @new_ihead_offs: used by debugging to check ihead_offs
++ *
++ * @mst_node: master node
++ * @mst_offs: offset of valid master node
++ * @mst_mutex: protects the master node area, @mst_node, and @mst_offs
++ *
++ * @log_lebs: number of logical eraseblocks in the log
++ * @log_bytes: log size in bytes
++ * @log_last: last LEB of the log
++ * @lpt_lebs: number of LEBs used for lprops table
++ * @lpt_first: first LEB of the lprops table area
++ * @lpt_last: last LEB of the lprops table area
++ * @orph_lebs: number of LEBs used for the orphan area
++ * @orph_first: first LEB of the orphan area
++ * @orph_last: last LEB of the orphan area
++ * @main_lebs: count of LEBs in the main area
++ * @main_first: first LEB of the main area
++ * @main_bytes: main area size in bytes
++ * @default_compr: default compression type
++ *
++ * @key_hash_type: type of the key hash
++ * @key_hash: direntry key hash function
++ * @key_fmt: key format
++ * @key_len: key length
++ * @fanout: fanout of the index tree (number of links per indexing node)
++ *
++ * @min_io_size: minimal input/output unit size
++ * @min_io_shift: number of bits in @min_io_size minus one
++ * @leb_size: logical eraseblock size in bytes
++ * @half_leb_size: half LEB size
++ * @leb_cnt: count of logical eraseblocks
++ * @max_leb_cnt: maximum count of logical eraseblocks
++ * @old_leb_cnt: count of logical eraseblocks before resize
++ * @ro_media: the underlying UBI volume is read-only
++ *
++ * @dirty_pg_cnt: number of dirty pages (not used)
++ * @dirty_ino_cnt: number of dirty inodes (not used)
++ * @dirty_zn_cnt: number of dirty znodes
++ * @clean_zn_cnt: number of clean znodes
++ *
++ * @budg_idx_growth: amount of bytes budgeted for index growth
++ * @budg_data_growth: amount of bytes budgeted for cached data
++ * @budg_dd_growth: amount of bytes budgeted for cached data that will make
++ *                  other data dirty
++ * @budg_uncommitted_idx: amount of bytes were budgeted for growth of the index,
++ *                        but which still have to be taken into account because
++ *                        the index has not been committed so far
++ * @space_lock: protects @budg_idx_growth, @budg_data_growth, @budg_dd_growth,
++ *              @budg_uncommited_idx, @min_idx_lebs, @old_idx_sz, and @lst;
++ * @min_idx_lebs: minimum number of LEBs required for the index
++ * @old_idx_sz: size of index on flash
++ * @calc_idx_sz: temporary variable which is used to calculate new index size
++ *               (contains accurate new index size at end of TNC commit start)
++ * @lst: lprops statistics
++ *
++ * @page_budget: budget for a page
++ * @inode_budget: budget for an inode
++ * @dent_budget: budget for a directory entry
++ *
++ * @ref_node_alsz: size of the LEB reference node aligned to the min. flash
++ * I/O unit
++ * @mst_node_alsz: master node aligned size
++ * @min_idx_node_sz: minimum indexing node aligned on 8-bytes boundary
++ * @max_idx_node_sz: maximum indexing node aligned on 8-bytes boundary
++ * @max_inode_sz: maximum possible inode size in bytes
++ * @max_znode_sz: size of znode in bytes
++ * @dead_wm: LEB dead space watermark
++ * @dark_wm: LEB dark space watermark
++ * @block_cnt: count of 4KiB blocks on the FS
++ *
++ * @ranges: UBIFS node length ranges
++ * @ubi: UBI volume descriptor
++ * @di: UBI device information
++ * @vi: UBI volume information
++ *
++ * @orph_tree: rb-tree of orphan inode numbers
++ * @orph_list: list of orphan inode numbers in order added
++ * @orph_new: list of orphan inode numbers added since last commit
++ * @orph_cnext: next orphan to commit
++ * @orph_dnext: next orphan to delete
++ * @orphan_lock: lock for orph_tree and orph_new
++ * @orph_buf: buffer for orphan nodes
++ * @new_orphans: number of orphans since last commit
++ * @cmt_orphans: number of orphans being committed
++ * @tot_orphans: number of orphans in the rb_tree
++ * @max_orphans: maximum number of orphans allowed
++ * @ohead_lnum: orphan head LEB number
++ * @ohead_offs: orphan head offset
++ * @no_orphs: non-zero if there are no orphans
++ *
++ * @bgt: UBIFS background thread
++ * @bgt_name: background thread name
++ * @need_bgt: if background thread should run
++ * @need_wbuf_sync: if write-buffers have to be synchronized
++ *
++ * @gc_lnum: LEB number used for garbage collection
++ * @sbuf: a buffer of LEB size used by GC and replay for scanning
++ * @idx_gc: list of index LEBs that have been garbage collected
++ * @idx_gc_cnt: number of elements on the idx_gc list
++ *
++ * @infos_list: links all 'ubifs_info' objects
++ * @umount_mutex: serializes shrinker and un-mount
++ * @shrinker_run_no: shrinker run number
++ *
++ * @space_bits: number of bits needed to record free or dirty space
++ * @lpt_lnum_bits: number of bits needed to record a LEB number in the LPT
++ * @lpt_offs_bits: number of bits needed to record an offset in the LPT
++ * @lpt_spc_bits: number of bits needed to space in the LPT
++ * @pcnt_bits: number of bits needed to record pnode or nnode number
++ * @lnum_bits: number of bits needed to record LEB number
++ * @nnode_sz: size of on-flash nnode
++ * @pnode_sz: size of on-flash pnode
++ * @ltab_sz: size of on-flash LPT lprops table
++ * @lsave_sz: size of on-flash LPT save table
++ * @pnode_cnt: number of pnodes
++ * @nnode_cnt: number of nnodes
++ * @lpt_hght: height of the LPT
++ * @pnodes_have: number of pnodes in memory
++ *
++ * @lp_mutex: protects lprops table and all the other lprops-related fields
++ * @lpt_lnum: LEB number of the root nnode of the LPT
++ * @lpt_offs: offset of the root nnode of the LPT
++ * @nhead_lnum: LEB number of LPT head
++ * @nhead_offs: offset of LPT head
++ * @lpt_drty_flgs: dirty flags for LPT special nodes e.g. ltab
++ * @dirty_nn_cnt: number of dirty nnodes
++ * @dirty_pn_cnt: number of dirty pnodes
++ * @lpt_sz: LPT size
++ * @lpt_nod_buf: buffer for an on-flash nnode or pnode
++ * @lpt_buf: buffer of LEB size used by LPT
++ * @nroot: address in memory of the root nnode of the LPT
++ * @lpt_cnext: next LPT node to commit
++ * @lpt_heap: array of heaps of categorized lprops
++ * @dirty_idx: a (reverse sorted) copy of the LPROPS_DIRTY_IDX heap as at
++ *             previous commit start
++ * @uncat_list: list of un-categorized LEBs
++ * @empty_list: list of empty LEBs
++ * @freeable_list: list of freeable non-index LEBs (free + dirty == leb_size)
++ * @frdi_idx_list: list of freeable index LEBs (free + dirty == leb_size)
++ * @freeable_cnt: number of freeable LEBs in @freeable_list
++ *
++ * @ltab_lnum: LEB number of LPT's own lprops table
++ * @ltab_offs: offset of LPT's own lprops table
++ * @ltab: LPT's own lprops table
++ * @ltab_cmt: LPT's own lprops table (commit copy)
++ * @lsave_cnt: number of LEB numbers in LPT's save table
++ * @lsave_lnum: LEB number of LPT's save table
++ * @lsave_offs: offset of LPT's save table
++ * @lsave: LPT's save table
++ * @lscan_lnum: LEB number of last LPT scan
++ *
++ * @rp_size: size of the reserved pool in bytes
++ * @report_rp_size: size of the reserved pool reported to userspace
++ * @rp_uid: reserved pool user ID
++ * @rp_gid: reserved pool group ID
++ *
++ * @empty: if the UBI device is empty
++ * @replay_tree: temporary tree used during journal replay
++ * @replay_list: temporary list used during journal replay
++ * @replay_buds: list of buds to replay
++ * @cs_sqnum: sequence number of first node in the log (commit start node)
++ * @replay_sqnum: sequence number of node currently being replayed
++ * @need_recovery: file-system needs recovery
++ * @replaying: set to %1 during journal replay
++ * @unclean_leb_list: LEBs to recover when mounting ro to rw
++ * @rcvrd_mst_node: recovered master node to write when mounting ro to rw
++ * @size_tree: inode size information for recovery
++ * @remounting_rw: set while remounting from ro to rw (sb flags have MS_RDONLY)
++ * @mount_opts: UBIFS-specific mount options
++ *
++ * @dbg_buf: a buffer of LEB size used for debugging purposes
++ * @old_zroot: old index root - used by 'dbg_check_old_index()'
++ * @old_zroot_level: old index root level - used by 'dbg_check_old_index()'
++ * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()'
++ * @failure_mode: failure mode for recovery testing
++ * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
++ * @fail_timeout: time in jiffies when delay of failure mode expires
++ * @fail_cnt: current number of calls to failure mode I/O functions
++ * @fail_cnt_max: number of calls by which to delay failure mode
++ */
++struct ubifs_info {
++	struct super_block *vfs_sb;
++
++	ino_t highest_inum;
++	unsigned int vfs_gen;
++	unsigned long long max_sqnum;
++	unsigned long long cmt_no;
++	spinlock_t cnt_lock;
++	int fmt_version;
++	unsigned char uuid[16];
++
++	int lhead_lnum;
++	int lhead_offs;
++	int ltail_lnum;
++	struct mutex log_mutex;
++	int min_log_bytes;
++	long long cmt_bud_bytes;
++
++	struct rb_root buds;
++	long long bud_bytes;
++	spinlock_t buds_lock;
++	int jhead_cnt;
++	struct ubifs_jhead *jheads;
++	long long max_bud_bytes;
++	long long bg_bud_bytes;
++	struct list_head old_buds;
++	int max_bud_cnt;
++
++	struct rw_semaphore commit_sem;
++	int cmt_state;
++	spinlock_t cs_lock;
++	wait_queue_head_t cmt_wq;
++	unsigned int fast_unmount:1;
++	unsigned int big_lpt:1;
++
++	struct mutex tnc_mutex;
++	struct ubifs_zbranch zroot;
++	struct ubifs_znode *cnext;
++	struct ubifs_znode *enext;
++	int *gap_lebs;
++	void *cbuf;
++	void *ileb_buf;
++	int ileb_len;
++	int ihead_lnum;
++	int ihead_offs;
++	int *ilebs;
++	int ileb_cnt;
++	int ileb_nxt;
++	struct rb_root old_idx;
++	int *bottom_up_buf;
++#ifdef CONFIG_UBIFS_FS_DEBUG
++	int new_ihead_lnum;
++	int new_ihead_offs;
++#endif
++
++	struct ubifs_mst_node *mst_node;
++	int mst_offs;
++	struct mutex mst_mutex;
++
++	int log_lebs;
++	long long log_bytes;
++	int log_last;
++	int lpt_lebs;
++	int lpt_first;
++	int lpt_last;
++	int orph_lebs;
++	int orph_first;
++	int orph_last;
++	int main_lebs;
++	int main_first;
++	long long main_bytes;
++	int default_compr;
++
++	uint8_t key_hash_type;
++	uint32_t (*key_hash)(const char *str, int len);
++	int key_fmt;
++	int key_len;
++	int fanout;
++
++	int min_io_size;
++	int min_io_shift;
++	int leb_size;
++	int half_leb_size;
++	int leb_cnt;
++	int max_leb_cnt;
++	int old_leb_cnt;
++	int ro_media;
++
++	atomic_long_t dirty_pg_cnt;
++	atomic_long_t dirty_ino_cnt;
++	atomic_long_t dirty_zn_cnt;
++	atomic_long_t clean_zn_cnt;
++
++	long long budg_idx_growth;
++	long long budg_data_growth;
++	long long budg_dd_growth;
++	long long budg_uncommitted_idx;
++	spinlock_t space_lock;
++	int min_idx_lebs;
++	unsigned long long old_idx_sz;
++	unsigned long long calc_idx_sz;
++	struct ubifs_lp_stats lst;
++
++	int page_budget;
++	int inode_budget;
++	int dent_budget;
++
++	int ref_node_alsz;
++	int mst_node_alsz;
++	int min_idx_node_sz;
++	int max_idx_node_sz;
++	long long max_inode_sz;
++	int max_znode_sz;
++	int dead_wm;
++	int dark_wm;
++	int block_cnt;
++
++	struct ubifs_node_range ranges[UBIFS_NODE_TYPES_CNT];
++	struct ubi_volume_desc *ubi;
++	struct ubi_device_info di;
++	struct ubi_volume_info vi;
++
++	struct rb_root orph_tree;
++	struct list_head orph_list;
++	struct list_head orph_new;
++	struct ubifs_orphan *orph_cnext;
++	struct ubifs_orphan *orph_dnext;
++	spinlock_t orphan_lock;
++	void *orph_buf;
++	int new_orphans;
++	int cmt_orphans;
++	int tot_orphans;
++	int max_orphans;
++	int ohead_lnum;
++	int ohead_offs;
++	int no_orphs;
++
++	struct task_struct *bgt;
++	char bgt_name[sizeof(BGT_NAME_PATTERN) + 9];
++	int need_bgt;
++	int need_wbuf_sync;
++
++	int gc_lnum;
++	void *sbuf;
++	struct list_head idx_gc;
++	int idx_gc_cnt;
++
++	struct list_head infos_list;
++	struct mutex umount_mutex;
++	unsigned int shrinker_run_no;
++
++	int space_bits;
++	int lpt_lnum_bits;
++	int lpt_offs_bits;
++	int lpt_spc_bits;
++	int pcnt_bits;
++	int lnum_bits;
++	int nnode_sz;
++	int pnode_sz;
++	int ltab_sz;
++	int lsave_sz;
++	int pnode_cnt;
++	int nnode_cnt;
++	int lpt_hght;
++	int pnodes_have;
++
++	struct mutex lp_mutex;
++	int lpt_lnum;
++	int lpt_offs;
++	int nhead_lnum;
++	int nhead_offs;
++	int lpt_drty_flgs;
++	int dirty_nn_cnt;
++	int dirty_pn_cnt;
++	long long lpt_sz;
++	void *lpt_nod_buf;
++	void *lpt_buf;
++	struct ubifs_nnode *nroot;
++	struct ubifs_cnode *lpt_cnext;
++	struct ubifs_lpt_heap lpt_heap[LPROPS_HEAP_CNT];
++	struct ubifs_lpt_heap dirty_idx;
++	struct list_head uncat_list;
++	struct list_head empty_list;
++	struct list_head freeable_list;
++	struct list_head frdi_idx_list;
++	int freeable_cnt;
++
++	int ltab_lnum;
++	int ltab_offs;
++	struct ubifs_lpt_lprops *ltab;
++	struct ubifs_lpt_lprops *ltab_cmt;
++	int lsave_cnt;
++	int lsave_lnum;
++	int lsave_offs;
++	int *lsave;
++	int lscan_lnum;
++
++	long long rp_size;
++	long long report_rp_size;
++	uid_t rp_uid;
++	gid_t rp_gid;
++
++	/* The below fields are used only during mounting and re-mounting */
++	int empty;
++	struct rb_root replay_tree;
++	struct list_head replay_list;
++	struct list_head replay_buds;
++	unsigned long long cs_sqnum;
++	unsigned long long replay_sqnum;
++	int need_recovery;
++	int replaying;
++	struct list_head unclean_leb_list;
++	struct ubifs_mst_node *rcvrd_mst_node;
++	struct rb_root size_tree;
++	int remounting_rw;
++	struct ubifs_mount_opts mount_opts;
++
++#ifdef CONFIG_UBIFS_FS_DEBUG
++	void *dbg_buf;
++	struct ubifs_zbranch old_zroot;
++	int old_zroot_level;
++	unsigned long long old_zroot_sqnum;
++	int failure_mode;
++	int fail_delay;
++	unsigned long fail_timeout;
++	unsigned int fail_cnt;
++	unsigned int fail_cnt_max;
++#endif
++};
++
++extern struct list_head ubifs_infos;
++extern spinlock_t ubifs_infos_lock;
++extern atomic_long_t ubifs_clean_zn_cnt;
++extern struct kmem_cache *ubifs_inode_slab;
++extern struct super_operations ubifs_super_operations;
++extern struct address_space_operations ubifs_file_address_operations;
++extern struct file_operations ubifs_file_operations;
++extern struct inode_operations ubifs_file_inode_operations;
++extern struct file_operations ubifs_dir_operations;
++extern struct inode_operations ubifs_dir_inode_operations;
++extern struct inode_operations ubifs_symlink_inode_operations;
++extern struct backing_dev_info ubifs_backing_dev_info;
++extern struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT];
++
++/* io.c */
++int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len);
++int ubifs_wbuf_seek_nolock(struct ubifs_wbuf *wbuf, int lnum, int offs,
++			   int dtype);
++int ubifs_wbuf_init(struct ubifs_info *c, struct ubifs_wbuf *wbuf);
++int ubifs_read_node(const struct ubifs_info *c, void *buf, int type, int len,
++		    int lnum, int offs);
++int ubifs_read_node_wbuf(struct ubifs_wbuf *wbuf, void *buf, int type, int len,
++			 int lnum, int offs);
++int ubifs_write_node(struct ubifs_info *c, void *node, int len, int lnum,
++		     int offs, int dtype);
++int ubifs_check_node(const struct ubifs_info *c, const void *buf, int lnum,
++		     int offs, int quiet);
++void ubifs_prepare_node(struct ubifs_info *c, void *buf, int len, int pad);
++void ubifs_prep_grp_node(struct ubifs_info *c, void *node, int len, int last);
++int ubifs_io_init(struct ubifs_info *c);
++void ubifs_pad(const struct ubifs_info *c, void *buf, int pad);
++int ubifs_wbuf_sync_nolock(struct ubifs_wbuf *wbuf);
++int ubifs_bg_wbufs_sync(struct ubifs_info *c);
++void ubifs_wbuf_add_ino_nolock(struct ubifs_wbuf *wbuf, ino_t inum);
++int ubifs_sync_wbufs_by_inodes(struct ubifs_info *c,
++			       struct inode * const *inodes, int count);
++
++/* scan.c */
++struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum,
++				  int offs, void *sbuf);
++void ubifs_scan_destroy(struct ubifs_scan_leb *sleb);
++int ubifs_scan_a_node(const struct ubifs_info *c, void *buf, int len, int lnum,
++		      int offs, int quiet);
++struct ubifs_scan_leb *ubifs_start_scan(const struct ubifs_info *c, int lnum,
++					int offs, void *sbuf);
++void ubifs_end_scan(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++		    int lnum, int offs);
++int ubifs_add_snod(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
++		   void *buf, int offs);
++void ubifs_scanned_corruption(const struct ubifs_info *c, int lnum, int offs,
++			      void *buf);
++
++/* log.c */
++void ubifs_add_bud(struct ubifs_info *c, struct ubifs_bud *bud);
++void ubifs_create_buds_lists(struct ubifs_info *c);
++int ubifs_add_bud_to_log(struct ubifs_info *c, int jhead, int lnum, int offs);
++struct ubifs_bud *ubifs_search_bud(struct ubifs_info *c, int lnum);
++struct ubifs_wbuf *ubifs_get_wbuf(struct ubifs_info *c, int lnum);
++int ubifs_log_start_commit(struct ubifs_info *c, int *ltail_lnum);
++int ubifs_log_end_commit(struct ubifs_info *c, int new_ltail_lnum);
++int ubifs_log_post_commit(struct ubifs_info *c, int old_ltail_lnum);
++int ubifs_consolidate_log(struct ubifs_info *c);
++
++/* journal.c */
++int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
++		     const struct qstr *nm, const struct inode *inode,
++		     int deletion, int sync, int xent);
++int ubifs_jnl_write_data(struct ubifs_info *c, const struct inode *inode,
++			 const union ubifs_key *key, const void *buf, int len);
++int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode,
++			  int last_reference, int sync);
++int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
++		     const struct dentry *old_dentry,
++		     const struct inode *new_dir,
++		     const struct dentry *new_dentry, int sync);
++int ubifs_jnl_truncate(struct ubifs_info *c, ino_t inum,
++		       loff_t old_size, loff_t new_size);
++int ubifs_jnl_delete_xattr(struct ubifs_info *c, const struct inode *host,
++			   const struct inode *inode, const struct qstr *nm,
++			   int sync);
++int ubifs_jnl_write_2_inodes(struct ubifs_info *c, const struct inode *inode1,
++			     const struct inode *inode2, int sync);
++
++/* budget.c */
++int ubifs_budget_space(struct ubifs_info *c, struct ubifs_budget_req *req);
++void ubifs_release_budget(struct ubifs_info *c, struct ubifs_budget_req *req);
++int ubifs_budget_inode_op(struct ubifs_info *c, struct inode *inode,
++			  struct ubifs_budget_req *req);
++void ubifs_release_ino_dirty(struct ubifs_info *c, struct inode *inode,
++				struct ubifs_budget_req *req);
++void ubifs_cancel_ino_op(struct ubifs_info *c, struct inode *inode,
++			 struct ubifs_budget_req *req);
++int ubifs_budget_ino_cleaning(struct ubifs_info *c, struct inode *inode,
++			      struct ubifs_budget_req *req);
++void ubifs_release_ino_clean(struct ubifs_info *c, struct inode *inode,
++			     struct ubifs_budget_req *req);
++long long ubifs_budg_get_free_space(struct ubifs_info *c);
++int ubifs_calc_min_idx_lebs(struct ubifs_info *c);
++void ubifs_convert_page_budget(struct ubifs_info *c);
++void ubifs_release_new_page_budget(struct ubifs_info *c);
++long long ubifs_calc_available(const struct ubifs_info *c);
++
++/* find.c */
++int ubifs_find_free_space(struct ubifs_info *c, int min_space, int *free,
++			  int squeeze);
++int ubifs_find_free_leb_for_idx(struct ubifs_info *c);
++int ubifs_find_dirty_leb(struct ubifs_info *c, struct ubifs_lprops *ret_lp,
++			 int min_space, int pick_free);
++int ubifs_find_dirty_idx_leb(struct ubifs_info *c);
++int ubifs_save_dirty_idx_lnums(struct ubifs_info *c);
++
++/* tnc.c */
++int ubifs_lookup_level0(struct ubifs_info *c, const union ubifs_key *key,
++			struct ubifs_znode **zn, int *n);
++int ubifs_tnc_lookup(struct ubifs_info *c, const union ubifs_key *key,
++		     void *node);
++int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
++			void *node, const struct qstr *nm);
++int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key,
++		     void *node, int *lnum, int *offs);
++int ubifs_tnc_add(struct ubifs_info *c, const union ubifs_key *key, int lnum,
++		  int offs, int len);
++int ubifs_tnc_replace(struct ubifs_info *c, const union ubifs_key *key,
++		      int old_lnum, int old_offs, int lnum, int offs, int len);
++int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key,
++		     int lnum, int offs, int len, const struct qstr *nm);
++int ubifs_tnc_remove(struct ubifs_info *c, const union ubifs_key *key);
++int ubifs_tnc_remove_nm(struct ubifs_info *c, const union ubifs_key *key,
++			const struct qstr *nm);
++int ubifs_tnc_remove_range(struct ubifs_info *c, union ubifs_key *from_key,
++			   union ubifs_key *to_key);
++int ubifs_tnc_remove_ino(struct ubifs_info *c, ino_t inum);
++struct ubifs_dent_node *ubifs_tnc_next_ent(struct ubifs_info *c,
++					   union ubifs_key *key,
++					   const struct qstr *nm);
++void ubifs_tnc_close(struct ubifs_info *c);
++int ubifs_tnc_has_node(struct ubifs_info *c, union ubifs_key *key, int level,
++		       int lnum, int offs, int is_idx);
++int ubifs_dirty_idx_node(struct ubifs_info *c, union ubifs_key *key, int level,
++			 int lnum, int offs);
++/* Shared by tnc.c for tnc_commit.c */
++void destroy_old_idx(struct ubifs_info *c);
++int is_idx_node_in_tnc(struct ubifs_info *c, union ubifs_key *key, int level,
++		       int lnum, int offs);
++int insert_old_idx_znode(struct ubifs_info *c, struct ubifs_znode *znode);
++
++/* tnc_misc.c */
++struct ubifs_znode *ubifs_tnc_levelorder_next(struct ubifs_znode *zr,
++					      struct ubifs_znode *znode);
++int ubifs_search_zbranch(const struct ubifs_info *c,
++			 const struct ubifs_znode *znode,
++			 const union ubifs_key *key, int *n);
++struct ubifs_znode *ubifs_tnc_postorder_first(struct ubifs_znode *znode);
++struct ubifs_znode *ubifs_tnc_postorder_next(struct ubifs_znode *znode);
++long ubifs_destroy_tnc_subtree(struct ubifs_znode *zr);
++struct ubifs_znode *ubifs_load_znode(struct ubifs_info *c,
++				     struct ubifs_zbranch *zbr,
++				     struct ubifs_znode *parent, int iip);
++int ubifs_tnc_read_node(struct ubifs_info *c, struct ubifs_zbranch *zbr,
++			void *node);
++
++/* tnc_commit.c */
++int ubifs_tnc_start_commit(struct ubifs_info *c, struct ubifs_zbranch *zroot);
++int ubifs_tnc_end_commit(struct ubifs_info *c);
++
++/* shrinker.c */
++int ubifs_shrinker(int nr_to_scan, gfp_t gfp_mask);
++
++/* commit.c */
++int ubifs_bg_thread(void *info);
++void ubifs_commit_required(struct ubifs_info *c);
++void ubifs_request_bg_commit(struct ubifs_info *c);
++int ubifs_run_commit(struct ubifs_info *c);
++void ubifs_recovery_commit(struct ubifs_info *c);
++int ubifs_gc_should_commit(struct ubifs_info *c);
++void ubifs_wait_for_commit(struct ubifs_info *c);
++
++/* master.c */
++int ubifs_read_master(struct ubifs_info *c);
++int ubifs_write_master(struct ubifs_info *c);
++
++/* sb.c */
++int ubifs_read_superblock(struct ubifs_info *c);
++struct ubifs_sb_node *ubifs_read_sb_node(struct ubifs_info *c);
++int ubifs_write_sb_node(struct ubifs_info *c, struct ubifs_sb_node *sup);
++
++/* replay.c */
++int ubifs_validate_entry(struct ubifs_info *c,
++			 const struct ubifs_dent_node *dent);
++int ubifs_replay_journal(struct ubifs_info *c);
++
++/* gc.c */
++int ubifs_garbage_collect(struct ubifs_info *c, int anyway);
++int ubifs_gc_start_commit(struct ubifs_info *c);
++int ubifs_gc_end_commit(struct ubifs_info *c);
++void ubifs_destroy_idx_gc(struct ubifs_info *c);
++int ubifs_get_idx_gc_leb(struct ubifs_info *c);
++int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp);
++
++/* orphan.c */
++int ubifs_add_orphan(struct ubifs_info *c, ino_t inum);
++void ubifs_delete_orphan(struct ubifs_info *c, ino_t inum);
++int ubifs_orphan_start_commit(struct ubifs_info *c);
++int ubifs_orphan_end_commit(struct ubifs_info *c);
++int ubifs_mount_orphans(struct ubifs_info *c, int unclean, int read_only);
++
++/* lpt.c */
++int ubifs_calc_lpt_geom(struct ubifs_info *c);
++int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first,
++			  int *lpt_lebs, int *big_lpt);
++int ubifs_lpt_init(struct ubifs_info *c, int rd, int wr);
++struct ubifs_lprops *ubifs_lpt_lookup(struct ubifs_info *c, int lnum);
++struct ubifs_lprops *ubifs_lpt_lookup_dirty(struct ubifs_info *c, int lnum);
++int ubifs_lpt_scan_nolock(struct ubifs_info *c, int start_lnum, int end_lnum,
++			  ubifs_lpt_scan_callback scan_cb, void *data);
++
++/* Shared by lpt.c for lpt_commit.c */
++void ubifs_pack_lsave(struct ubifs_info *c, void *buf, int *lsave);
++void ubifs_pack_ltab(struct ubifs_info *c, void *buf,
++		     struct ubifs_lpt_lprops *ltab);
++void ubifs_pack_pnode(struct ubifs_info *c, void *buf,
++		      struct ubifs_pnode *pnode);
++void ubifs_pack_nnode(struct ubifs_info *c, void *buf,
++		      struct ubifs_nnode *nnode);
++struct ubifs_pnode *ubifs_get_pnode(struct ubifs_info *c,
++				    struct ubifs_nnode *parent, int iip);
++struct ubifs_nnode *ubifs_get_nnode(struct ubifs_info *c,
++				    struct ubifs_nnode *parent, int iip);
++int ubifs_read_nnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip);
++void ubifs_add_lpt_dirt(struct ubifs_info *c, int lnum, int dirty);
++void ubifs_add_nnode_dirt(struct ubifs_info *c, struct ubifs_nnode *nnode);
++uint32_t ubifs_unpack_bits(uint8_t **addr, int *pos, int nrbits);
++struct ubifs_nnode *ubifs_first_nnode(struct ubifs_info *c, int *hght);
++
++/* lpt_commit.c */
++int ubifs_lpt_start_commit(struct ubifs_info *c);
++int ubifs_lpt_end_commit(struct ubifs_info *c);
++int ubifs_lpt_post_commit(struct ubifs_info *c);
++void ubifs_lpt_free(struct ubifs_info *c, int wr_only);
++
++/* lprops.c */
++void ubifs_get_lprops(struct ubifs_info *c);
++const struct ubifs_lprops *ubifs_change_lp(struct ubifs_info *c,
++					   const struct ubifs_lprops *lp,
++					   int free, int dirty, int flags,
++					   int idx_gc_cnt);
++void ubifs_release_lprops(struct ubifs_info *c);
++void ubifs_get_lp_stats(struct ubifs_info *c, struct ubifs_lp_stats *stats);
++void ubifs_add_to_cat(struct ubifs_info *c, struct ubifs_lprops *lprops,
++		      int cat);
++void ubifs_replace_cat(struct ubifs_info *c, struct ubifs_lprops *old_lprops,
++		       struct ubifs_lprops *new_lprops);
++void ubifs_ensure_cat(struct ubifs_info *c, struct ubifs_lprops *lprops);
++int ubifs_categorize_lprops(const struct ubifs_info *c,
++			    const struct ubifs_lprops *lprops);
++int ubifs_change_one_lp(struct ubifs_info *c, int lnum, int free, int dirty,
++			int flags_set, int flags_clean, int idx_gc_cnt);
++int ubifs_update_one_lp(struct ubifs_info *c, int lnum, int free, int dirty,
++			int flags_set, int flags_clean);
++int ubifs_read_one_lp(struct ubifs_info *c, int lnum, struct ubifs_lprops *lp);
++const struct ubifs_lprops *ubifs_fast_find_free(struct ubifs_info *c);
++const struct ubifs_lprops *ubifs_fast_find_empty(struct ubifs_info *c);
++const struct ubifs_lprops *ubifs_fast_find_freeable(struct ubifs_info *c);
++const struct ubifs_lprops *ubifs_fast_find_frdi_idx(struct ubifs_info *c);
++
++/* file.c */
++int ubifs_fsync(struct file *file, struct dentry *dentry, int datasync);
++int ubifs_setattr(struct dentry *dentry, struct iattr *attr);
++
++/* dir.c */
++struct inode *ubifs_new_inode(struct ubifs_info *c, const struct inode *dir,
++			      int mode);
++int ubifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
++		  struct kstat *stat);
++
++/* xattr.c */
++int ubifs_setxattr(struct dentry *dentry, const char *name,
++		   const void *value, size_t size, int flags);
++ssize_t ubifs_getxattr(struct dentry *dentry, const char *name, void *buf,
++		       size_t size);
++ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size);
++int ubifs_removexattr(struct dentry *dentry, const char *name);
++
++/* super.c */
++struct inode *ubifs_iget(struct super_block *sb, unsigned long inum);
++
++/* recovery.c */
++int ubifs_recover_master_node(struct ubifs_info *c);
++int ubifs_write_rcvrd_mst_node(struct ubifs_info *c);
++struct ubifs_scan_leb *ubifs_recover_leb(struct ubifs_info *c, int lnum,
++					 int offs, void *sbuf, int grouped);
++struct ubifs_scan_leb *ubifs_recover_log_leb(struct ubifs_info *c, int lnum,
++					     int offs, void *sbuf);
++int ubifs_recover_inl_heads(const struct ubifs_info *c, void *sbuf);
++int ubifs_clean_lebs(const struct ubifs_info *c, void *sbuf);
++int ubifs_rcvry_gc_commit(struct ubifs_info *c);
++int ubifs_recover_size_accum(struct ubifs_info *c, union ubifs_key *key,
++			     int deletion, loff_t new_size);
++int ubifs_recover_size(struct ubifs_info *c);
++void ubifs_destroy_size_tree(struct ubifs_info *c);
++
++/* ioctl.c */
++long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
++void ubifs_set_inode_flags(struct inode *inode);
++#ifdef CONFIG_COMPAT
++long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
++#endif
++
++/* compressor.c */
++int __init ubifs_compressors_init(void);
++void __exit ubifs_compressors_exit(void);
++void ubifs_compress(const void *in_buf, int in_len, void *out_buf, int *out_len,
++		    int *compr_type);
++int ubifs_decompress(const void *buf, int len, void *out, int *out_len,
++		     int compr_type);
++
++#include "debug.h"
++#include "misc.h"
++#include "key.h"
++
++#endif /* !__UBIFS_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/ubifs-media.h avr32-2.6/fs/ubifs/ubifs-media.h
+--- linux-2.6.25.6/fs/ubifs/ubifs-media.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/ubifs-media.h	2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,729 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file describes UBIFS on-flash format and contains definitions of all the
++ * relevant data structures and constants.
++ *
++ * All UBIFS on-flash objects are stored in the form of nodes. All nodes start
++ * with the UBIFS node magic number and have the same common header. Nodes
++ * always sit at 8-byte aligned positions on the media and node header sizes are
++ * also 8-byte aligned (except for the indexing node and the padding node).
++ */
++
++#ifndef __UBIFS_MEDIA_H__
++#define __UBIFS_MEDIA_H__
++
++/* UBIFS node magic number (must not have the padding byte first or last) */
++#define UBIFS_NODE_MAGIC  0x06101831
++
++/* UBIFS on-flash format version */
++#define UBIFS_FORMAT_VERSION 4
++
++/* Minimum logical eraseblock size in bytes */
++#define UBIFS_MIN_LEB_SZ (15*1024)
++
++/* Initial CRC32 value used when calculating CRC checksums */
++#define UBIFS_CRC32_INIT 0xFFFFFFFFU
++
++/*
++ * UBIFS does not try to compress data if its length is less than the below
++ * constant.
++ */
++#define UBIFS_MIN_COMPR_LEN 128
++
++/* Root inode number */
++#define UBIFS_ROOT_INO 1
++
++/* Lowest inode number used for regular inodes (not UBIFS-only internal ones) */
++#define UBIFS_FIRST_INO 64
++
++/*
++ * Maximum file name and extended attribute length (must be a multiple of 8,
++ * minus 1).
++ */
++#define UBIFS_MAX_NLEN 255
++
++/* Maximum number of data journal heads */
++#define UBIFS_MAX_JHEADS 1
++
++/*
++ * Size of UBIFS data block. Note, UBIFS is not a block oriented file-system,
++ * which means that it does not treat the underlying media as consisting of
++ * blocks like in case of hard drives. Do not be confused. UBIFS block is just
++ * the maximum amount of data which one data node can have or which can be
++ * attached to an inode node.
++ */
++#define UBIFS_BLOCK_SIZE  4096
++#define UBIFS_BLOCK_SHIFT 12
++#define UBIFS_BLOCK_MASK  0x00000FFF
++
++/* UBIFS padding byte pattern (must not be first or last byte of node magic) */
++#define UBIFS_PADDING_BYTE 0xCE
++
++/* Maximum possible key length */
++#define UBIFS_MAX_KEY_LEN 16
++
++/* Key length ("simple" format) */
++#define UBIFS_SK_LEN 8
++
++/* Minimum index tree fanout */
++#define UBIFS_MIN_FANOUT 2
++
++/* Maximum number of levels in UBIFS indexing B-tree */
++#define UBIFS_MAX_LEVELS 512
++
++/* Maximum amount of data attached to an inode in bytes */
++#define UBIFS_MAX_INO_DATA UBIFS_BLOCK_SIZE
++
++/* LEB Properties Tree fanout (must be power of 2) and fanout shift */
++#define UBIFS_LPT_FANOUT 4
++#define UBIFS_LPT_FANOUT_SHIFT 2
++
++/* LEB Properties Tree bit field sizes */
++#define UBIFS_LPT_CRC_BITS 16
++#define UBIFS_LPT_CRC_BYTES 2
++#define UBIFS_LPT_TYPE_BITS 4
++
++/* The key is always at the same position in all keyed nodes */
++#define UBIFS_KEY_OFFSET offsetof(struct ubifs_ino_node, key)
++
++/*
++ * LEB Properties Tree node types.
++ *
++ * UBIFS_LPT_PNODE: LPT leaf node (contains LEB properties)
++ * UBIFS_LPT_NNODE: LPT internal node
++ * UBIFS_LPT_LTAB: LPT's own lprops table
++ * UBIFS_LPT_LSAVE: LPT's save table (big model only)
++ * UBIFS_LPT_NODE_CNT: count of LPT node types
++ * UBIFS_LPT_NOT_A_NODE: all ones (15 for 4 bits) is never a valid node type
++ */
++enum {
++	UBIFS_LPT_PNODE,
++	UBIFS_LPT_NNODE,
++	UBIFS_LPT_LTAB,
++	UBIFS_LPT_LSAVE,
++	UBIFS_LPT_NODE_CNT,
++	UBIFS_LPT_NOT_A_NODE = (1 << UBIFS_LPT_TYPE_BITS) - 1,
++};
++
++/*
++ * UBIFS inode types.
++ *
++ * UBIFS_ITYPE_REG: regular file
++ * UBIFS_ITYPE_DIR: directory
++ * UBIFS_ITYPE_LNK: soft link
++ * UBIFS_ITYPE_BLK: block device node
++ * UBIFS_ITYPE_CHR: character device node
++ * UBIFS_ITYPE_FIFO: fifo
++ * UBIFS_ITYPE_SOCK: socket
++ * UBIFS_ITYPES_CNT: count of supported file types
++ */
++enum {
++	UBIFS_ITYPE_REG,
++	UBIFS_ITYPE_DIR,
++	UBIFS_ITYPE_LNK,
++	UBIFS_ITYPE_BLK,
++	UBIFS_ITYPE_CHR,
++	UBIFS_ITYPE_FIFO,
++	UBIFS_ITYPE_SOCK,
++	UBIFS_ITYPES_CNT,
++};
++
++/*
++ * Supported key hash functions.
++ *
++ * UBIFS_KEY_HASH_R5: R5 hash
++ * UBIFS_KEY_HASH_TEST: test hash which just returns first 4 bytes of the name
++ */
++enum {
++	UBIFS_KEY_HASH_R5,
++	UBIFS_KEY_HASH_TEST,
++};
++
++/*
++ * Supported key formats.
++ *
++ * UBIFS_SIMPLE_KEY_FMT: simple key format
++ */
++enum {
++	UBIFS_SIMPLE_KEY_FMT,
++};
++
++/*
++ * The simple key format uses 29 bits for storing UBIFS block number and hash
++ * value.
++ */
++#define UBIFS_S_KEY_BLOCK_BITS 29
++#define UBIFS_S_KEY_BLOCK_MASK 0x1FFFFFFF
++#define UBIFS_S_KEY_HASH_BITS  UBIFS_S_KEY_BLOCK_BITS
++#define UBIFS_S_KEY_HASH_MASK  UBIFS_S_KEY_BLOCK_MASK
++
++/*
++ * Key types.
++ *
++ * UBIFS_INO_KEY: inode node key
++ * UBIFS_DATA_KEY: data node key
++ * UBIFS_DENT_KEY: directory entry node key
++ * UBIFS_XENT_KEY: extended attribute entry key
++ * UBIFS_KEY_TYPES_CNT: number of supported key types
++ */
++enum {
++	UBIFS_INO_KEY,
++	UBIFS_DATA_KEY,
++	UBIFS_DENT_KEY,
++	UBIFS_XENT_KEY,
++	UBIFS_KEY_TYPES_CNT,
++};
++
++/* Count of LEBs reserved for the superblock area */
++#define UBIFS_SB_LEBS 1
++/* Count of LEBs reserved for the master area */
++#define UBIFS_MST_LEBS 2
++
++/* First LEB of the superblock area */
++#define UBIFS_SB_LNUM 0
++/* First LEB of the master area */
++#define UBIFS_MST_LNUM (UBIFS_SB_LNUM + UBIFS_SB_LEBS)
++/* First LEB of the log area */
++#define UBIFS_LOG_LNUM (UBIFS_MST_LNUM + UBIFS_MST_LEBS)
++
++/* Minimum number of logical eraseblocks in the log */
++#define UBIFS_MIN_LOG_LEBS 2
++/* Minimum number of bud logical eraseblocks */
++#define UBIFS_MIN_BUD_LEBS 2
++/* Minimum number of journal logical eraseblocks */
++#define UBIFS_MIN_JNL_LEBS (UBIFS_MIN_LOG_LEBS + UBIFS_MIN_BUD_LEBS)
++/* Minimum number of LPT area logical eraseblocks */
++#define UBIFS_MIN_LPT_LEBS 2
++/* Minimum number of orphan area logical eraseblocks */
++#define UBIFS_MIN_ORPH_LEBS 1
++/* Minimum number of main area logical eraseblocks */
++#define UBIFS_MIN_MAIN_LEBS 8
++
++/* Minimum number of logical eraseblocks */
++#define UBIFS_MIN_LEB_CNT (UBIFS_SB_LEBS + UBIFS_MST_LEBS + \
++			   UBIFS_MIN_LOG_LEBS + UBIFS_MIN_BUD_LEBS  + \
++			   UBIFS_MIN_LPT_LEBS + UBIFS_MIN_ORPH_LEBS + \
++			   UBIFS_MIN_MAIN_LEBS)
++
++/* Node sizes (N.B. these are guaranteed to be multiples of 8) */
++#define UBIFS_CH_SZ        sizeof(struct ubifs_ch)
++#define UBIFS_INO_NODE_SZ  sizeof(struct ubifs_ino_node)
++#define UBIFS_DATA_NODE_SZ sizeof(struct ubifs_data_node)
++#define UBIFS_DENT_NODE_SZ sizeof(struct ubifs_dent_node)
++#define UBIFS_TRUN_NODE_SZ sizeof(struct ubifs_trun_node)
++#define UBIFS_PAD_NODE_SZ  sizeof(struct ubifs_pad_node)
++#define UBIFS_SB_NODE_SZ   sizeof(struct ubifs_sb_node)
++#define UBIFS_MST_NODE_SZ  sizeof(struct ubifs_mst_node)
++#define UBIFS_REF_NODE_SZ  sizeof(struct ubifs_ref_node)
++#define UBIFS_IDX_NODE_SZ  sizeof(struct ubifs_idx_node)
++#define UBIFS_CS_NODE_SZ   sizeof(struct ubifs_cs_node)
++#define UBIFS_ORPH_NODE_SZ sizeof(struct ubifs_orph_node)
++/* Extended attribute entry nodes are identical to directory entry nodes */
++#define UBIFS_XENT_NODE_SZ UBIFS_DENT_NODE_SZ
++/* Only this does not have to be multiple of 8 bytes */
++#define UBIFS_BRANCH_SZ    sizeof(struct ubifs_branch)
++
++/* Maximum node sizes (N.B. these are guaranteed to be multiples of 8) */
++#define UBIFS_MAX_DATA_NODE_SZ  (UBIFS_DATA_NODE_SZ + UBIFS_BLOCK_SIZE)
++#define UBIFS_MAX_INO_NODE_SZ   (UBIFS_INO_NODE_SZ + UBIFS_MAX_INO_DATA)
++#define UBIFS_MAX_DENT_NODE_SZ  (UBIFS_DENT_NODE_SZ + UBIFS_MAX_NLEN + 1)
++#define UBIFS_MAX_XENT_NODE_SZ  UBIFS_MAX_DENT_NODE_SZ
++
++/* The largest UBIFS node */
++#define UBIFS_MAX_NODE_SZ UBIFS_MAX_INO_NODE_SZ
++
++/*
++ * On-flash inode flags.
++ *
++ * UBIFS_COMPR_FL: use compression for this inode
++ * UBIFS_SYNC_FL:  I/O on this inode has to be synchronous
++ * UBIFS_IMMUTABLE_FL: inode is immutable
++ * UBIFS_APPEND_FL: writes to the inode may only append data
++ * UBIFS_DIRSYNC_FL: I/O on this directory inode has to be synchronous
++ *
++ * Note, these are on-flash flags which correspond to ioctl flags
++ * (@FS_COMPR_FL, etc). They have the same values now, but generally, do not
++ * have to be the same.
++ */
++enum {
++	UBIFS_COMPR_FL     = 0x01,
++	UBIFS_SYNC_FL      = 0x02,
++	UBIFS_IMMUTABLE_FL = 0x04,
++	UBIFS_APPEND_FL    = 0x08,
++	UBIFS_DIRSYNC_FL   = 0x10,
++};
++
++/* Inode flag bits used by UBIFS */
++#define UBIFS_FL_MASK 0x0000001F
++
++/*
++ * UBIFS compression types.
++ *
++ * UBIFS_COMPR_NONE: no compression
++ * UBIFS_COMPR_LZO: LZO compression
++ * UBIFS_COMPR_ZLIB: ZLIB compression
++ * UBIFS_COMPR_TYPES_CNT: count of supported compression types
++ */
++enum {
++	UBIFS_COMPR_NONE,
++	UBIFS_COMPR_LZO,
++	UBIFS_COMPR_ZLIB,
++	UBIFS_COMPR_TYPES_CNT,
++};
++
++/*
++ * UBIFS node types.
++ *
++ * UBIFS_INO_NODE: inode node
++ * UBIFS_DATA_NODE: data node
++ * UBIFS_DENT_NODE: directory entry node
++ * UBIFS_XENT_NODE: extended attribute node
++ * UBIFS_TRUN_NODE: truncation node
++ * UBIFS_PAD_NODE: padding node
++ * UBIFS_SB_NODE: superblock node
++ * UBIFS_MST_NODE: master node
++ * UBIFS_REF_NODE: LEB reference node
++ * UBIFS_IDX_NODE: index node
++ * UBIFS_CS_NODE: commit start node
++ * UBIFS_ORPH_NODE: orphan node
++ * UBIFS_NODE_TYPES_CNT: count of supported node types
++ *
++ * Note, we index arrays by these numbers, so keep them low and contiguous.
++ * Node type constants for inodes, direntries and so on have to be the same as
++ * corresponding key type constants.
++ */
++enum {
++	UBIFS_INO_NODE,
++	UBIFS_DATA_NODE,
++	UBIFS_DENT_NODE,
++	UBIFS_XENT_NODE,
++	UBIFS_TRUN_NODE,
++	UBIFS_PAD_NODE,
++	UBIFS_SB_NODE,
++	UBIFS_MST_NODE,
++	UBIFS_REF_NODE,
++	UBIFS_IDX_NODE,
++	UBIFS_CS_NODE,
++	UBIFS_ORPH_NODE,
++	UBIFS_NODE_TYPES_CNT,
++};
++
++/*
++ * Master node flags.
++ *
++ * UBIFS_MST_DIRTY: rebooted uncleanly - master node is dirty
++ * UBIFS_MST_NO_ORPHS: no orphan inodes present
++ * UBIFS_MST_RCVRY: written by recovery
++ */
++enum {
++	UBIFS_MST_DIRTY = 1,
++	UBIFS_MST_NO_ORPHS = 2,
++	UBIFS_MST_RCVRY = 4,
++};
++
++/*
++ * Node group type (used by recovery to recover whole group or none).
++ *
++ * UBIFS_NO_NODE_GROUP: this node is not part of a group
++ * UBIFS_IN_NODE_GROUP: this node is a part of a group
++ * UBIFS_LAST_OF_NODE_GROUP: this node is the last in a group
++ */
++enum {
++	UBIFS_NO_NODE_GROUP = 0,
++	UBIFS_IN_NODE_GROUP,
++	UBIFS_LAST_OF_NODE_GROUP,
++};
++
++/*
++ * Superblock flags.
++ *
++ * UBIFS_FLG_BIGLPT: if "big" LPT model is used if set
++ */
++enum {
++	UBIFS_FLG_BIGLPT = 0x02,
++};
++
++/**
++ * struct ubifs_ch - common header node.
++ * @magic: UBIFS node magic number (%UBIFS_NODE_MAGIC)
++ * @crc: CRC-32 checksum of the node header
++ * @sqnum: sequence number
++ * @len: full node length
++ * @node_type: node type
++ * @group_type: node group type
++ * @padding: reserved for future, zeroes
++ *
++ * Every UBIFS node starts with this common part. If the node has a key, the
++ * key always goes next.
++ */
++struct ubifs_ch {
++	__le32 magic;
++	__le32 crc;
++	__le64 sqnum;
++	__le32 len;
++	__u8 node_type;
++	__u8 group_type;
++	__u8 padding[2];
++} __attribute__ ((packed));
++
++/**
++ * union ubifs_dev_desc - device node descriptor.
++ * @new: new type device descriptor
++ * @huge: huge type device descriptor
++ *
++ * This data structure describes major/minor numbers of a device node. In an
++ * inode is a device node then its data contains an object of this type. UBIFS
++ * uses standard Linux "new" and "huge" device node encodings.
++ */
++union ubifs_dev_desc {
++	__le32 new;
++	__le64 huge;
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_ino_node - inode node.
++ * @ch: common header
++ * @key: node key
++ * @creat_sqnum: sequence number at time of creation
++ * @size: inode size in bytes (amount of uncompressed data)
++ * @atime_sec: access time seconds
++ * @ctime_sec: creation time seconds
++ * @mtime_sec: modification time seconds
++ * @atime_nsec: access time nanoseconds
++ * @ctime_nsec: creation time nanoseconds
++ * @mtime_nsec: modification time nanoseconds
++ * @nlink: number of hard links
++ * @uid: owner ID
++ * @gid: group ID
++ * @mode: access flags
++ * @flags: per-inode flags (%UBIFS_COMPR_FL, %UBIFS_SYNC_FL, etc)
++ * @data_len: inode data length
++ * @xattr_cnt: count of extended attributes this inode has
++ * @xattr_size: summarized size of all extended attributes in bytes
++ * @xattr_names: sum of lengths of all extended attribute names belonging to
++ *               this inode
++ * @compr_type: compression type used for this inode
++ * @padding: reserved for future, zeroes
++ * @data: data attached to the inode
++ *
++ * Note, even though inode compression type is defined by @compr_type, some
++ * nodes of this inode may be compressed with different compressor - this
++ * happens if compression type is changed while the inode already has data
++ * nodes. But @compr_type will be use for further writes to the inode.
++ *
++ * Note, do not forget to amend 'zero_ino_node_unused()' function when changing
++ * the padding fields.
++ */
++struct ubifs_ino_node {
++	struct ubifs_ch ch;
++	__u8 key[UBIFS_MAX_KEY_LEN];
++	__le64 creat_sqnum;
++	__le64 size;
++	__le64 atime_sec;
++	__le64 ctime_sec;
++	__le64 mtime_sec;
++	__le32 atime_nsec;
++	__le32 ctime_nsec;
++	__le32 mtime_nsec;
++	__le32 nlink;
++	__le32 uid;
++	__le32 gid;
++	__le32 mode;
++	__le32 flags;
++	__le32 data_len;
++	__le32 xattr_cnt;
++	__le64 xattr_size;
++	__le32 xattr_names;
++	__le16 compr_type;
++	__u8 padding[26]; /* Watch 'zero_ino_node_unused()' if changing! */
++	__u8 data[];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_dent_node - directory entry node.
++ * @ch: common header
++ * @key: node key
++ * @inum: target inode number
++ * @padding1: reserved for future, zeroes
++ * @type: type of the target inode (%UBIFS_ITYPE_REG, %UBIFS_ITYPE_DIR, etc)
++ * @nlen: name length
++ * @padding2: reserved for future, zeroes
++ * @name: zero-terminated name
++ *
++ * Note, do not forget to amend 'zero_dent_node_unused()' function when
++ * changing the padding fields.
++ */
++struct ubifs_dent_node {
++	struct ubifs_ch ch;
++	__u8 key[UBIFS_MAX_KEY_LEN];
++	__le64 inum;
++	__u8 padding1;
++	__u8 type;
++	__le16 nlen;
++	__u8 padding2[4]; /* Watch 'zero_dent_node_unused()' if changing! */
++	__u8 name[];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_data_node - data node.
++ * @ch: common header
++ * @key: node key
++ * @size: uncompressed data size in bytes
++ * @compr_type: compression type (%UBIFS_COMPR_NONE, %UBIFS_COMPR_LZO, etc)
++ * @padding: reserved for future, zeroes
++ * @data: data
++ *
++ * Note, do not forget to amend 'zero_data_node_unused()' function when
++ * changing the padding fields.
++ */
++struct ubifs_data_node {
++	struct ubifs_ch ch;
++	__u8 key[UBIFS_MAX_KEY_LEN];
++	__le32 size;
++	__le16 compr_type;
++	__u8 padding[2]; /* Watch 'zero_data_node_unused()' if changing! */
++	__u8 data[];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_trun_node - truncation node.
++ * @ch: common header
++ * @inum: truncated inode number
++ * @padding: reserved for future, zeroes
++ * @old_size: size before truncation
++ * @new_size: size after truncation
++ *
++ * This node exists only in the journal and never goes to the main area. Note,
++ * do not forget to amend 'zero_trun_node_unused()' function when changing the
++ * padding fields.
++ */
++struct ubifs_trun_node {
++	struct ubifs_ch ch;
++	__le32 inum;
++	__u8 padding[12]; /* Watch 'zero_trun_node_unused()' if changing! */
++	__le64 old_size;
++	__le64 new_size;
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_pad_node - padding node.
++ * @ch: common header
++ * @pad_len: how many bytes after this node are unused (because padded)
++ * @padding: reserved for future, zeroes
++ */
++struct ubifs_pad_node {
++	struct ubifs_ch ch;
++	__le32 pad_len;
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_sb_node - superblock node.
++ * @ch: common header
++ * @padding: reserved for future, zeroes
++ * @key_hash: type of hash function used in keys
++ * @key_fmt: format of the key
++ * @flags: file-system flags (%UBIFS_FLG_BIGLPT, etc)
++ * @min_io_size: minimal input/output unit size
++ * @leb_size: logical eraseblock size in bytes
++ * @leb_cnt: count of LEBs used by filesystem
++ * @max_leb_cnt: maximum count of LEBs used by filesystem
++ * @max_bud_bytes: maximum amount of data stored in buds
++ * @log_lebs: log size in logical eraseblocks
++ * @lpt_lebs: number of LEBs used for lprops table
++ * @orph_lebs: number of LEBs used for recording orphans
++ * @jhead_cnt: count of journal heads
++ * @fanout: tree fanout (max. number of links per indexing node)
++ * @lsave_cnt: number of LEB numbers in LPT's save table
++ * @fmt_version: UBIFS on-flash format version
++ * @default_compr: default compression
++ * @padding1: reserved for future, zeroes
++ * @rp_uid: reserve pool UID
++ * @rp_gid: reserve pool GID
++ * @rp_size: size of the reserved pool in bytes
++ * @padding2: reserved for future, zeroes
++ * @time_gran: time granularity in nanoseconds
++ * @uuid: UUID generated when the file system image was created
++ */
++struct ubifs_sb_node {
++	struct ubifs_ch ch;
++	__u8 padding[2];
++	__u8 key_hash;
++	__u8 key_fmt;
++	__le32 flags;
++	__le32 min_io_size;
++	__le32 leb_size;
++	__le32 leb_cnt;
++	__le32 max_leb_cnt;
++	__le64 max_bud_bytes;
++	__le32 log_lebs;
++	__le32 lpt_lebs;
++	__le32 orph_lebs;
++	__le32 jhead_cnt;
++	__le32 fanout;
++	__le32 lsave_cnt;
++	__le32 fmt_version;
++	__le16 default_compr;
++	__u8 padding1[2];
++	__le32 rp_uid;
++	__le32 rp_gid;
++	__le64 rp_size;
++	__le32 time_gran;
++	__u8 uuid[16];
++	__u8 padding2[3972];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_mst_node - master node.
++ * @ch: common header
++ * @highest_inum: highest inode number in the committed index
++ * @cmt_no: commit number
++ * @flags: various flags (%UBIFS_MST_DIRTY, etc)
++ * @log_lnum: start of the log
++ * @root_lnum: LEB number of the root indexing node
++ * @root_offs: offset within @root_lnum
++ * @root_len: root indexing node length
++ * @gc_lnum: LEB reserved for garbage collection (%-1 value means the LEB was
++ * not reserved and should be reserved on mount)
++ * @ihead_lnum: LEB number of index head
++ * @ihead_offs: offset of index head
++ * @index_size: size of index on flash
++ * @total_free: total free space in bytes
++ * @total_dirty: total dirty space in bytes
++ * @total_used: total used space in bytes (includes only data LEBs)
++ * @total_dead: total dead space in bytes (includes only data LEBs)
++ * @total_dark: total dark space in bytes (includes only data LEBs)
++ * @lpt_lnum: LEB number of LPT root nnode
++ * @lpt_offs: offset of LPT root nnode
++ * @nhead_lnum: LEB number of LPT head
++ * @nhead_offs: offset of LPT head
++ * @ltab_lnum: LEB number of LPT's own lprops table
++ * @ltab_offs: offset of LPT's own lprops table
++ * @lsave_lnum: LEB number of LPT's save table (big model only)
++ * @lsave_offs: offset of LPT's save table (big model only)
++ * @lscan_lnum: LEB number of last LPT scan
++ * @empty_lebs: number of empty logical eraseblocks
++ * @idx_lebs: number of indexing logical eraseblocks
++ * @leb_cnt: count of LEBs used by filesystem
++ * @padding: reserved for future, zeroes
++ */
++struct ubifs_mst_node {
++	struct ubifs_ch ch;
++	__le64 highest_inum;
++	__le64 cmt_no;
++	__le32 flags;
++	__le32 log_lnum;
++	__le32 root_lnum;
++	__le32 root_offs;
++	__le32 root_len;
++	__le32 gc_lnum;
++	__le32 ihead_lnum;
++	__le32 ihead_offs;
++	__le64 index_size;
++	__le64 total_free;
++	__le64 total_dirty;
++	__le64 total_used;
++	__le64 total_dead;
++	__le64 total_dark;
++	__le32 lpt_lnum;
++	__le32 lpt_offs;
++	__le32 nhead_lnum;
++	__le32 nhead_offs;
++	__le32 ltab_lnum;
++	__le32 ltab_offs;
++	__le32 lsave_lnum;
++	__le32 lsave_offs;
++	__le32 lscan_lnum;
++	__le32 empty_lebs;
++	__le32 idx_lebs;
++	__le32 leb_cnt;
++	__u8 padding[344];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_ref_node - logical eraseblock reference node.
++ * @ch: common header
++ * @lnum: the referred logical eraseblock number
++ * @offs: start offset in the referred LEB
++ * @jhead: journal head number
++ * @padding: reserved for future, zeroes
++ */
++struct ubifs_ref_node {
++	struct ubifs_ch ch;
++	__le32 lnum;
++	__le32 offs;
++	__le32 jhead;
++	__u8 padding[28];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_branch - key/reference/length branch
++ * @lnum: LEB number of the target node
++ * @offs: offset within @lnum
++ * @len: target node length
++ * @key: key
++ */
++struct ubifs_branch {
++	__le32 lnum;
++	__le32 offs;
++	__le32 len;
++	__u8 key[];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_idx_node - indexing node.
++ * @ch: common header
++ * @child_cnt: number of child index nodes
++ * @level: tree level
++ * @branches: LEB number / offset / length / key branches
++ */
++struct ubifs_idx_node {
++	struct ubifs_ch ch;
++	__le16 child_cnt;
++	__le16 level;
++	__u8 branches[];
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_cs_node - commit start node.
++ * @ch: common header
++ * @cmt_no: commit number
++ */
++struct ubifs_cs_node {
++	struct ubifs_ch ch;
++	__le64 cmt_no;
++} __attribute__ ((packed));
++
++/**
++ * struct ubifs_orph_node - orphan node.
++ * @ch: common header
++ * @cmt_no: commit number (also top bit is set on the last node of the commit)
++ * @inos: inode numbers of orphans
++ */
++struct ubifs_orph_node {
++	struct ubifs_ch ch;
++	__le64 cmt_no;
++	__le64 inos[];
++} __attribute__ ((packed));
++
++#endif /* __UBIFS_MEDIA_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/fs/ubifs/xattr.c avr32-2.6/fs/ubifs/xattr.c
+--- linux-2.6.25.6/fs/ubifs/xattr.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/fs/ubifs/xattr.c	2008-06-12 15:09:45.603817614 +0200
+@@ -0,0 +1,581 @@
++/*
++ * This file is part of UBIFS.
++ *
++ * Copyright (C) 2006-2008 Nokia Corporation.
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published by
++ * the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License along with
++ * this program; if not, write to the Free Software Foundation, Inc., 51
++ * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
++ *
++ * Authors: Artem Bityutskiy (Битюцкий Артём)
++ *          Adrian Hunter
++ */
++
++/*
++ * This file implements UBIFS extended attributes support.
++ *
++ * Extended attributes are implemented as regular inodes with attached data,
++ * which limits extended attribute size to UBIFS block size (4KiB). Names of
++ * extended attributes are described by extended attribute entries (xentries),
++ * which are almost identical to directory entries, but have different key type.
++ *
++ * In other words, the situation with extended attributes is very similar to
++ * directories. Indeed, any inode (but of course not xattr inodes) may have a
++ * number of associated xentries, just like directory inodes have associated
++ * directory entries. Extended attribute entries store the name of the extended
++ * attribute, the host inode number, and the extended attribute inode number.
++ * Similarly, direntries store the name, the parent and the target inode
++ * numbers. Thus, most of the common UBIFS mechanisms may be re-used for
++ * extended attributes.
++ *
++ * The number of extended attributes is not limited, but there is Linux
++ * limitation on the maximum possible size of the list of all extended
++ * attributes associated with an inode (%XATTR_LIST_MAX), so UBIFS makes sure
++ * the sum of all extended attribute names of the inode does not exceed that
++ * limit.
++ *
++ * Extended attributes are synchronous, which means they are written to the
++ * flash media synchronously and there is no write-back for extended attribute
++ * inodes. The extended attribute values are not stored in compressed form on
++ * the media.
++ *
++ * Since extended attributes are represented by regular inodes, they are cached
++ * in the VFS inode cache. The xentries are cached in the LNC cache (see
++ * tnc.c).
++ *
++ * ACL support is not implemented.
++ */
++
++#include <linux/xattr.h>
++#include <linux/posix_acl_xattr.h>
++#include "ubifs.h"
++
++/*
++ * Extended attribute type constants.
++ *
++ * USER_XATTR: user extended attribute ("user.*")
++ * TRUSTED_XATTR: trusted extended attribute ("trusted.*)
++ * SECURITY_XATTR: security extended attribute ("security.*")
++ */
++enum {
++	USER_XATTR,
++	TRUSTED_XATTR,
++	SECURITY_XATTR,
++};
++
++static struct inode_operations none_inode_operations;
++static struct address_space_operations none_address_operations;
++static struct file_operations none_file_operations;
++
++/**
++ * create_xattr - create an extended attribute.
++ * @c: UBIFS file-system description object
++ * @host: host inode
++ * @nm: extended attribute name
++ * @value: extended attribute value
++ * @size: size of extended attribute value
++ *
++ * This is a helper function which creates an extended attribute of name @nm
++ * and value @value for inode @host. The host inode is also updated on flash
++ * because the ctime and extended attribute accounting data changes. This
++ * function returns zero in case of success and a negative error code in case
++ * of failure.
++ */
++static int create_xattr(struct ubifs_info *c, struct inode *host,
++			const struct qstr *nm, const void *value, int size)
++{
++	struct ubifs_inode *ui, *host_ui = ubifs_inode(host);
++	struct ubifs_budget_req req = { .new_ino = 1, .new_dent = 1,
++					.new_ino_d = size };
++	struct inode *inode;
++	int err;
++
++	/*
++	 * Linux limits the maximum size of the extended attribute names list
++	 * to %XATTR_LIST_MAX. This means we should not allow creating more*
++	 * extended attributes if the name list becomes larger. This limitation
++	 * is artificial for UBIFS, though.
++	 */
++	if (host_ui->xattr_names + host_ui->xattr_cnt +
++					nm->len + 1 > XATTR_LIST_MAX)
++		return -ENOSPC;
++
++	err = ubifs_budget_inode_op(c, host, &req);
++	if (err)
++		return err;
++
++	inode = ubifs_new_inode(c, host, S_IFREG | S_IRWXUGO);
++	if (IS_ERR(inode)) {
++		err = PTR_ERR(inode);
++		goto out_budg;
++	}
++
++	/* Re-define all operations to be "nothing" */
++	inode->i_mapping->a_ops = &none_address_operations;
++	inode->i_op = &none_inode_operations;
++	inode->i_fop = &none_file_operations;
++
++	inode->i_flags |= S_SYNC | S_NOATIME | S_NOCMTIME | S_NOQUOTA;
++	ui = ubifs_inode(inode);
++	ui->xattr = 1;
++	ui->data = kmalloc(size, GFP_NOFS);
++	if (!ui->data) {
++		err = -ENOMEM;
++		goto out_inode;
++	}
++
++	memcpy(ui->data, value, size);
++	host->i_ctime = ubifs_current_time(host);
++	host_ui->xattr_cnt += 1;
++	spin_lock(&host->i_lock);
++	host_ui->xattr_size += CALC_DENT_SIZE(nm->len);
++	host_ui->xattr_size += CALC_XATTR_BYTES(size);
++	spin_unlock(&host->i_lock);
++	host_ui->xattr_names += nm->len;
++
++	/*
++	 * We do not use i_size_write() because nobody can race with us as we
++	 * are holding host @host->i_mutex - every xattr operation for this
++	 * inode is serialized by it.
++	 */
++	inode->i_size = size;
++	ui->data_len = size;
++
++	/*
++	 * Note, it is important that 'ubifs_jnl_update()' writes the @host
++	 * inode last, so when it gets synchronized and the write-buffer is
++	 * flushed, the extended attribute is flushed as well.
++	 */
++	err = ubifs_jnl_update(c, host, nm, inode, 0, IS_DIRSYNC(host), 1);
++	if (err)
++		goto out_cancel;
++
++	ubifs_release_ino_clean(c, host, &req);
++	insert_inode_hash(inode);
++	iput(inode);
++	return 0;
++
++out_cancel:
++	host_ui->xattr_cnt -= 1;
++	spin_lock(&host->i_lock);
++	host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
++	host_ui->xattr_size -= CALC_XATTR_BYTES(size);
++	spin_unlock(&host->i_lock);
++out_inode:
++	make_bad_inode(inode);
++	iput(inode);
++out_budg:
++	ubifs_cancel_ino_op(c, host, &req);
++	return err;
++}
++
++/**
++ * change_xattr - change an extended attribute.
++ * @c: UBIFS file-system description object
++ * @host: host inode
++ * @inode: extended attribute inode
++ * @value: extended attribute value
++ * @size: size of extended attribute value
++ *
++ * This helper function changes the value of extended attribute @inode with new
++ * data from @value. Returns zero in case of success and a negative error code
++ * in case of failure.
++ */
++static int change_xattr(struct ubifs_info *c, struct inode *host,
++			struct inode *inode, const void *value, int size)
++{
++	struct ubifs_inode *host_ui = ubifs_inode(host);
++	struct ubifs_inode *ui = ubifs_inode(inode);
++	struct ubifs_budget_req req = { .dirtied_ino = 1,
++					.dirtied_ino_d = ui->data_len };
++	int err;
++
++	ubifs_assert(ui->data_len == inode->i_size);
++
++	err = ubifs_budget_inode_op(c, host, &req);
++	if (err)
++		return err;
++
++	host->i_ctime = ubifs_current_time(host);
++	spin_lock(&host->i_lock);
++	host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
++	host_ui->xattr_size += CALC_XATTR_BYTES(size);
++	spin_unlock(&host->i_lock);
++
++	kfree(ui->data);
++	ui->data = kmalloc(size, GFP_NOFS);
++	if (!ui->data) {
++		err = -ENOMEM;
++		goto out_budg;
++	}
++
++	memcpy(ui->data, value, size);
++	inode->i_size = size;
++	ui->data_len = size;
++
++	/*
++	 * It is important to write the host inode after the xattr inode
++	 * because if the host inode gets synchronized, then the extended
++	 * attribute inode gets synchronized, because it goes before the host
++	 * inode in the write-buffer.
++	 */
++	err = ubifs_jnl_write_2_inodes(c, inode, host, IS_DIRSYNC(host));
++	if (err)
++		goto out_cancel;
++
++	ubifs_release_ino_clean(c, host, &req);
++	return 0;
++
++out_cancel:
++	spin_lock(&host->i_lock);
++	host_ui->xattr_size -= CALC_XATTR_BYTES(size);
++	host_ui->xattr_size += CALC_XATTR_BYTES(ui->data_len);
++	spin_unlock(&host->i_lock);
++	make_bad_inode(inode);
++out_budg:
++	ubifs_cancel_ino_op(c, host, &req);
++	return err;
++}
++
++/**
++ * check_namespace - check extended attribute name-space.
++ * @nm: extended attribute name
++ *
++ * This function makes sure the extended attribute name belongs to one of the
++ * supported extended attribute name-spaces. Returns name-space index in case
++ * of success and a negative error code in case of failure.
++ */
++static int check_namespace(const struct qstr *nm)
++{
++	int type;
++
++	if (nm->len > UBIFS_MAX_NLEN)
++		return -ENAMETOOLONG;
++
++	if (!strncmp(nm->name, XATTR_TRUSTED_PREFIX,
++		     XATTR_TRUSTED_PREFIX_LEN)) {
++		if (nm->name[sizeof(XATTR_TRUSTED_PREFIX) - 1] == '\0')
++			return -EINVAL;
++		type = TRUSTED_XATTR;
++	} else if (!strncmp(nm->name, XATTR_USER_PREFIX,
++				      XATTR_USER_PREFIX_LEN)) {
++		if (nm->name[XATTR_USER_PREFIX_LEN] == '\0')
++			return -EINVAL;
++		type = USER_XATTR;
++	} else if (!strncmp(nm->name, XATTR_SECURITY_PREFIX,
++				     XATTR_SECURITY_PREFIX_LEN)) {
++		if (nm->name[sizeof(XATTR_SECURITY_PREFIX) - 1] == '\0')
++			return -EINVAL;
++		type = SECURITY_XATTR;
++	} else
++		return -EOPNOTSUPP;
++
++	return type;
++}
++
++int ubifs_setxattr(struct dentry *dentry, const char *name,
++		   const void *value, size_t size, int flags)
++{
++	struct inode *inode, *host = dentry->d_inode;
++	struct ubifs_info *c = host->i_sb->s_fs_info;
++	struct qstr nm = { .name = name, .len = strlen(name) };
++	struct ubifs_dent_node *xent;
++	union ubifs_key key;
++	int err, type;
++
++	dbg_gen("xattr '%s', host ino %lu ('%.*s'), size %zd", name,
++		host->i_ino, dentry->d_name.len, dentry->d_name.name, size);
++	ubifs_assert(ubifs_inode(host)->xattr_cnt >= 0);
++	ubifs_assert(ubifs_inode(host)->xattr_size >= 0);
++	ubifs_assert(ubifs_inode(host)->xattr_names >= 0);
++
++	if (size > UBIFS_MAX_INO_DATA)
++		return -ERANGE;
++
++	type = check_namespace(&nm);
++	if (type < 0)
++		return type;
++
++	xent = kmalloc(UBIFS_MAX_XENT_NODE_SZ, GFP_NOFS);
++	if (!xent)
++		return -ENOMEM;
++
++	/*
++	 * The extended attribute entries are stored in LNC, so multiple
++	 * look-ups do not involve reading the flash.
++	 */
++	xent_key_init(c, &key, host->i_ino, &nm);
++	err = ubifs_tnc_lookup_nm(c, &key, xent, &nm);
++	if (err) {
++		if (err != -ENOENT)
++			goto out_free;
++
++		if (flags & XATTR_REPLACE)
++			/* We are asked not to create the xattr */
++			err = -ENODATA;
++		else
++			err = create_xattr(c, host, &nm, value, size);
++		goto out_free;
++	}
++
++	if (flags & XATTR_CREATE) {
++		/* We are asked not to replace the xattr */
++		err = -EEXIST;
++		goto out_free;
++	}
++
++	inode = ubifs_iget(c->vfs_sb, le64_to_cpu(xent->inum));
++	if (IS_ERR(inode)) {
++		ubifs_err("dead extended attribute entry, error %d", err);
++		ubifs_ro_mode(c, err);
++		err = PTR_ERR(inode);
++		goto out_free;
++	}
++
++	err = change_xattr(c, host, inode, value, size);
++	iput(inode);
++
++out_free:
++	kfree(xent);
++	return err;
++}
++
++ssize_t ubifs_getxattr(struct dentry *dentry, const char *name, void *buf,
++		       size_t size)
++{
++	struct inode *inode, *host = dentry->d_inode;
++	struct ubifs_info *c = host->i_sb->s_fs_info;
++	struct qstr nm = { .name = name, .len = strlen(name) };
++	struct ubifs_inode *ui;
++	struct ubifs_dent_node *xent;
++	union ubifs_key key;
++	int err;
++
++	dbg_gen("xattr '%s', ino %lu ('%.*s'), buf size %zd", name,
++		host->i_ino, dentry->d_name.len, dentry->d_name.name, size);
++	ubifs_assert(ubifs_inode(host)->xattr_cnt >= 0);
++	ubifs_assert(ubifs_inode(host)->xattr_size >= 0);
++	ubifs_assert(ubifs_inode(host)->xattr_names >= 0);
++
++	err = check_namespace(&nm);
++	if (err < 0)
++		return err;
++
++	xent = kmalloc(UBIFS_MAX_XENT_NODE_SZ, GFP_NOFS);
++	if (!xent)
++		return -ENOMEM;
++
++	mutex_lock(&host->i_mutex);
++	xent_key_init(c, &key, host->i_ino, &nm);
++	err = ubifs_tnc_lookup_nm(c, &key, xent, &nm);
++	if (err) {
++		if (err == -ENOENT)
++			err = -ENODATA;
++		goto out_unlock;
++	}
++
++	inode = ubifs_iget(c->vfs_sb, le64_to_cpu(xent->inum));
++	if (IS_ERR(inode)) {
++		ubifs_err("dead extended attribute entry, error %d", err);
++		ubifs_ro_mode(c, err);
++		err = PTR_ERR(inode);
++		goto out_unlock;
++	}
++
++	ui = ubifs_inode(inode);
++	ubifs_assert(inode->i_size == ui->data_len);
++	ubifs_assert(ubifs_inode(host)->xattr_size > ui->data_len);
++
++	if (buf) {
++		/* If @buf is %NULL we are supposed to return the length */
++		if (ui->data_len > size) {
++			dbg_err("buffer size %zd, xattr len %d",
++				size, ui->data_len);
++			err = -ERANGE;
++			goto out_iput;
++		}
++
++		memcpy(buf, ui->data, ui->data_len);
++	}
++	err = ui->data_len;
++
++out_iput:
++	iput(inode);
++out_unlock:
++	mutex_unlock(&host->i_mutex);
++	kfree(xent);
++	return err;
++}
++
++ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size)
++{
++	struct inode *host = dentry->d_inode;
++	struct ubifs_info *c = host->i_sb->s_fs_info;
++	struct ubifs_inode *host_ui = ubifs_inode(host);
++	union ubifs_key key;
++	struct ubifs_dent_node *xent, *pxent = NULL;
++	int err, len, written = 0;
++	struct qstr nm = { .name = NULL };
++
++	dbg_gen("ino %lu ('%.*s'), buffer size %zd", host->i_ino,
++		dentry->d_name.len, dentry->d_name.name, size);
++	ubifs_assert(host_ui->xattr_cnt >= 0);
++	ubifs_assert(host_ui->xattr_size >= 0);
++	ubifs_assert(host_ui->xattr_names >= 0);
++
++	len = host_ui->xattr_names + host_ui->xattr_cnt;
++	if (!buffer)
++		/*
++		 * We should return the minimum buffer size which will fit a
++		 * null-terminated list of all the extended attribute names.
++		 */
++		return len;
++
++	if (len > size)
++		return -ERANGE;
++
++	lowest_xent_key(c, &key, host->i_ino);
++
++	mutex_lock(&host->i_mutex);
++	while (1) {
++		int type;
++
++		xent = ubifs_tnc_next_ent(c, &key, &nm);
++		if (unlikely(IS_ERR(xent))) {
++			err = PTR_ERR(xent);
++			break;
++		}
++
++		nm.name = xent->name;
++		nm.len = le16_to_cpu(xent->nlen);
++
++		type = check_namespace(&nm);
++		if (unlikely(type < 0)) {
++			err = type;
++			break;
++		}
++
++		/* Show trusted namespace only for "power" users */
++		if (type != TRUSTED_XATTR || capable(CAP_SYS_ADMIN)) {
++			memcpy(buffer + written, nm.name, nm.len + 1);
++			written += nm.len + 1;
++		}
++
++		kfree(pxent);
++		pxent = xent;
++		key_read(c, &xent->key, &key);
++	}
++	mutex_unlock(&host->i_mutex);
++
++	kfree(pxent);
++	if (err != -ENOENT) {
++		ubifs_err("cannot find next direntry, error %d", err);
++		return err;
++	}
++
++	ubifs_assert(written <= size);
++	return written;
++}
++
++static int remove_xattr(struct ubifs_info *c, struct inode *host,
++			struct inode *inode, const struct qstr *nm)
++{
++	struct ubifs_inode *host_ui = ubifs_inode(host);
++	struct ubifs_inode *ui = ubifs_inode(inode);
++	struct ubifs_budget_req req = { .dirtied_ino = 1, .mod_dent = 1 };
++	int err;
++
++	ubifs_assert(ui->data_len == inode->i_size);
++
++	err = ubifs_budget_inode_op(c, host, &req);
++	if (err)
++		return err;
++
++	host->i_ctime = ubifs_current_time(host);
++	host_ui->xattr_cnt -= 1;
++	spin_lock(&host->i_lock);
++	host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
++	host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
++	spin_unlock(&host->i_lock);
++	host_ui->xattr_names -= nm->len;
++
++	err = ubifs_jnl_delete_xattr(c, host, inode, nm, IS_DIRSYNC(host));
++	if (err)
++		goto out_cancel;
++
++	ubifs_release_ino_clean(c, host, &req);
++	return 0;
++
++out_cancel:
++	ubifs_cancel_ino_op(c, host, &req);
++	host_ui->xattr_cnt += 1;
++	spin_lock(&host->i_lock);
++	host_ui->xattr_size += CALC_DENT_SIZE(nm->len);
++	host_ui->xattr_size += CALC_XATTR_BYTES(ui->data_len);
++	spin_unlock(&host->i_lock);
++	make_bad_inode(inode);
++	return err;
++}
++
++int ubifs_removexattr(struct dentry *dentry, const char *name)
++{
++	struct inode *inode, *host = dentry->d_inode;
++	struct ubifs_info *c = host->i_sb->s_fs_info;
++	struct qstr nm = { .name = name, .len = strlen(name) };
++	struct ubifs_dent_node *xent;
++	union ubifs_key key;
++	int err;
++
++	dbg_gen("xattr '%s', ino %lu ('%.*s')", name,
++		host->i_ino, dentry->d_name.len, dentry->d_name.name);
++	ubifs_assert(mutex_is_locked(&host->i_mutex));
++	ubifs_assert(ubifs_inode(host)->xattr_cnt >= 0);
++	ubifs_assert(ubifs_inode(host)->xattr_size >= 0);
++	ubifs_assert(ubifs_inode(host)->xattr_names >= 0);
++
++	err = check_namespace(&nm);
++	if (err < 0)
++		return err;
++
++	xent = kmalloc(UBIFS_MAX_XENT_NODE_SZ, GFP_NOFS);
++	if (!xent)
++		return -ENOMEM;
++
++	xent_key_init(c, &key, host->i_ino, &nm);
++	err = ubifs_tnc_lookup_nm(c, &key, xent, &nm);
++	if (err) {
++		if (err == -ENOENT)
++			err = -ENODATA;
++		goto out_free;
++	}
++
++	inode = ubifs_iget(c->vfs_sb, le64_to_cpu(xent->inum));
++	if (IS_ERR(inode)) {
++		ubifs_err("dead extended attribute node entry");
++		ubifs_ro_mode(c, err);
++		err = PTR_ERR(inode);
++		goto out_free;
++	}
++
++	ubifs_assert(inode->i_nlink == 1);
++	inode->i_nlink = 0;
++	err = remove_xattr(c, host, inode, &nm);
++	if (err)
++		inode->i_nlink = 1;
++
++	/* If @i_nlink is 0, 'iput()' will delete the inode */
++	iput(inode);
++
++out_free:
++	kfree(xent);
++	return err;
++}
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-arm/arch-at91/at91_ecc.h avr32-2.6/include/asm-arm/arch-at91/at91_ecc.h
+--- linux-2.6.25.6/include/asm-arm/arch-at91/at91_ecc.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-arm/arch-at91/at91_ecc.h	1970-01-01 01:00:00.000000000 +0100
+@@ -1,38 +0,0 @@
 -/*
-- * Pin definitions for AT32AP7000.
+- * include/asm-arm/arch-at91/at91_ecc.h
 - *
-- * Copyright (C) 2006 Atmel Corporation
+- * Error Corrected Code Controller (ECC) - System peripherals regsters.
+- * Based on AT91SAM9260 datasheet revision B.
 - *
-- * This program is free software; you can redistribute it and/or modify
-- * it under the terms of the GNU General Public License version 2 as
-- * published by the Free Software Foundation.
+- * This program is free software; you can redistribute it and/or modify it
+- * under the terms of the GNU General Public License as published by the
+- * Free Software Foundation; either version 2 of the License, or (at your
+- * option) any later version.
 - */
--#ifndef __ASM_ARCH_AT32AP7000_H__
--#define __ASM_ARCH_AT32AP7000_H__
 -
--#define GPIO_PERIPH_A	0
--#define GPIO_PERIPH_B	1
+-#ifndef AT91_ECC_H
+-#define AT91_ECC_H
 -
--#define NR_GPIO_CONTROLLERS	4
+-#define AT91_ECC_CR		(AT91_ECC + 0x00)	/* Control register */
+-#define		AT91_ECC_RST		(1 << 0)		/* Reset parity */
 -
--/*
-- * Pin numbers identifying specific GPIO pins on the chip. They can
-- * also be converted to IRQ numbers by passing them through
-- * gpio_to_irq().
-- */
--#define GPIO_PIOA_BASE	(0)
--#define GPIO_PIOB_BASE	(GPIO_PIOA_BASE + 32)
--#define GPIO_PIOC_BASE	(GPIO_PIOB_BASE + 32)
--#define GPIO_PIOD_BASE	(GPIO_PIOC_BASE + 32)
--#define GPIO_PIOE_BASE	(GPIO_PIOD_BASE + 32)
+-#define AT91_ECC_MR		(AT91_ECC + 0x04)	/* Mode register */
+-#define		AT91_ECC_PAGESIZE	(3 << 0)		/* Page Size */
+-#define			AT91_ECC_PAGESIZE_528		(0)
+-#define			AT91_ECC_PAGESIZE_1056		(1)
+-#define			AT91_ECC_PAGESIZE_2112		(2)
+-#define			AT91_ECC_PAGESIZE_4224		(3)
 -
--#define GPIO_PIN_PA(N)	(GPIO_PIOA_BASE + (N))
--#define GPIO_PIN_PB(N)	(GPIO_PIOB_BASE + (N))
--#define GPIO_PIN_PC(N)	(GPIO_PIOC_BASE + (N))
--#define GPIO_PIN_PD(N)	(GPIO_PIOD_BASE + (N))
--#define GPIO_PIN_PE(N)	(GPIO_PIOE_BASE + (N))
+-#define AT91_ECC_SR		(AT91_ECC + 0x08)	/* Status register */
+-#define		AT91_ECC_RECERR		(1 << 0)		/* Recoverable Error */
+-#define		AT91_ECC_ECCERR		(1 << 1)		/* ECC Single Bit Error */
+-#define		AT91_ECC_MULERR		(1 << 2)		/* Multiple Errors */
 -
--#endif /* __ASM_ARCH_AT32AP7000_H__ */
---- /dev/null
-+++ b/include/asm-avr32/arch-at32ap/at32ap700x.h
-@@ -0,0 +1,35 @@
+-#define AT91_ECC_PR		(AT91_ECC + 0x0c)	/* Parity register */
+-#define		AT91_ECC_BITADDR	(0xf << 0)		/* Bit Error Address */
+-#define		AT91_ECC_WORDADDR	(0xfff << 4)		/* Word Error Address */
+-
+-#define AT91_ECC_NPR		(AT91_ECC + 0x10)	/* NParity register */
+-#define		AT91_ECC_NPARITY	(0xffff << 0)		/* NParity */
+-
+-#endif
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-arm/arch-at91/board.h avr32-2.6/include/asm-arm/arch-at91/board.h
+--- linux-2.6.25.6/include/asm-arm/arch-at91/board.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-arm/arch-at91/board.h	2008-06-12 15:09:45.803815435 +0200
+@@ -85,7 +85,7 @@
+ extern void __init at91_add_device_usbh(struct at91_usbh_data *data);
+ 
+  /* NAND / SmartMedia */
+-struct at91_nand_data {
++struct atmel_nand_data {
+ 	u8		enable_pin;	/* chip enable */
+ 	u8		det_pin;	/* card detect */
+ 	u8		rdy_pin;	/* ready/busy */
+@@ -94,7 +94,7 @@
+ 	u8		bus_width_16;	/* buswidth is 16 bit */
+ 	struct mtd_partition* (*partition_info)(int, int*);
+ };
+-extern void __init at91_add_device_nand(struct at91_nand_data *data);
++extern void __init at91_add_device_nand(struct atmel_nand_data *data);
+ 
+  /* I2C*/
+ extern void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices);
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/board.h avr32-2.6/include/asm-avr32/arch-at32ap/board.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/board.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/arch-at32ap/board.h	2008-06-12 15:09:45.855816193 +0200
+@@ -8,6 +8,12 @@
+ 
+ #define GPIO_PIN_NONE	(-1)
+ 
 +/*
-+ * Pin definitions for AT32AP7000.
-+ *
-+ * Copyright (C) 2006 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
++ * Clock rates for various on-board oscillators. The number of entries
++ * in this array is chip-dependent.
 + */
-+#ifndef __ASM_ARCH_AT32AP700X_H__
-+#define __ASM_ARCH_AT32AP700X_H__
-+
-+#define GPIO_PERIPH_A	0
-+#define GPIO_PERIPH_B	1
-+
-+#define NR_GPIO_CONTROLLERS	4
-+
-+/*
-+ * Pin numbers identifying specific GPIO pins on the chip. They can
-+ * also be converted to IRQ numbers by passing them through
-+ * gpio_to_irq().
-+ */
-+#define GPIO_PIOA_BASE	(0)
-+#define GPIO_PIOB_BASE	(GPIO_PIOA_BASE + 32)
-+#define GPIO_PIOC_BASE	(GPIO_PIOB_BASE + 32)
-+#define GPIO_PIOD_BASE	(GPIO_PIOC_BASE + 32)
-+#define GPIO_PIOE_BASE	(GPIO_PIOD_BASE + 32)
-+
-+#define GPIO_PIN_PA(N)	(GPIO_PIOA_BASE + (N))
-+#define GPIO_PIN_PB(N)	(GPIO_PIOB_BASE + (N))
-+#define GPIO_PIN_PC(N)	(GPIO_PIOC_BASE + (N))
-+#define GPIO_PIN_PD(N)	(GPIO_PIOD_BASE + (N))
-+#define GPIO_PIN_PE(N)	(GPIO_PIOE_BASE + (N))
-+
-+#endif /* __ASM_ARCH_AT32AP700X_H__ */
---- a/include/asm-avr32/arch-at32ap/board.h
-+++ b/include/asm-avr32/arch-at32ap/board.h
-@@ -38,9 +38,7 @@
++extern unsigned long at32_board_osc_rates[];
++  
+ /* Add basic devices: system manager, interrupt controller, portmuxes, etc. */
+ void at32_add_system_devices(void);
+ 
+@@ -36,11 +42,10 @@
+ struct atmel_lcdfb_info;
+ struct platform_device *
  at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
- 		     unsigned long fbmem_start, unsigned long fbmem_len);
+-		     unsigned long fbmem_start, unsigned long fbmem_len);
++		     unsigned long fbmem_start, unsigned long fbmem_len,
++		     unsigned int pin_config);
  
 -struct usba_platform_data {
 -	int vbus_pin;
@@ -18406,17 +47366,7 @@
  struct platform_device *
  at32_add_device_usba(unsigned int id, struct usba_platform_data *data);
  
-@@ -51,6 +49,9 @@
- at32_add_device_ide(unsigned int id, unsigned int extint,
- 		    struct ide_platform_data *data);
- 
-+/* mask says which PWM channels to mux */
-+struct platform_device *at32_add_device_pwm(u32 mask);
-+
- /* depending on what's hooked up, not all SSC pins will be used */
- #define	ATMEL_SSC_TK		0x01
- #define	ATMEL_SSC_TF		0x02
-@@ -65,8 +66,17 @@
+@@ -68,8 +73,17 @@
  struct platform_device *
  at32_add_device_ssc(unsigned int id, unsigned int flags);
  
@@ -18424,8 +47374,8 @@
 -struct platform_device *at32_add_device_mci(unsigned int id);
 +struct i2c_board_info;
 +struct platform_device *at32_add_device_twi(unsigned int id,
-+					     struct i2c_board_info *b,
-+					     unsigned int n);
++					    struct i2c_board_info *b,
++					    unsigned int n);
 +
 +struct mci_platform_data {
 +	int detect_pin;
@@ -18436,48 +47386,45 @@
  struct platform_device *at32_add_device_ac97c(unsigned int id);
  struct platform_device *at32_add_device_abdac(unsigned int id);
  
-@@ -81,4 +91,7 @@
+@@ -84,4 +98,20 @@
  at32_add_device_cf(unsigned int id, unsigned int extint,
  		struct cf_platform_data *data);
  
 +struct platform_device *
 +at32_add_device_psif(unsigned int id);
 +
++/* NAND / SmartMedia */
++struct atmel_nand_data {
++	int	enable_pin;	/* chip enable */
++	int	det_pin;	/* card detect */
++	int	rdy_pin;	/* ready/busy */
++	u8	ale;		/* address line number connected to ALE */
++	u8	cle;		/* address line number connected to CLE */
++	u8	bus_width_16;	/* buswidth is 16 bit */
++	struct mtd_partition *(*partition_info)(int size, int *num_partitions);
++};
++struct platform_device *
++at32_add_device_nand(unsigned int id, struct atmel_nand_data *data);
++
  #endif /* __ASM_ARCH_BOARD_H */
---- a/include/asm-avr32/arch-at32ap/cpu.h
-+++ b/include/asm-avr32/arch-at32ap/cpu.h
-@@ -14,7 +14,7 @@
-  * Only AT32AP7000 is defined for now. We can identify the specific
-  * chip at runtime, but I'm not sure if it's really worth it.
-  */
--#ifdef CONFIG_CPU_AT32AP7000
-+#ifdef CONFIG_CPU_AT32AP700X
- # define cpu_is_at32ap7000()	(1)
- #else
- # define cpu_is_at32ap7000()	(0)
---- a/include/asm-avr32/arch-at32ap/io.h
-+++ b/include/asm-avr32/arch-at32ap/io.h
-@@ -4,7 +4,7 @@
- /* For "bizarre" halfword swapping */
- #include <linux/byteorder/swabb.h>
- 
--#if defined(CONFIG_AP7000_32_BIT_SMC)
-+#if defined(CONFIG_AP700X_32_BIT_SMC)
- # define __swizzle_addr_b(addr)	(addr ^ 3UL)
- # define __swizzle_addr_w(addr)	(addr ^ 2UL)
- # define __swizzle_addr_l(addr)	(addr)
-@@ -14,7 +14,7 @@
- # define __mem_ioswabb(a, x)	(x)
- # define __mem_ioswabw(a, x)	swab16(x)
- # define __mem_ioswabl(a, x)	swab32(x)
--#elif defined(CONFIG_AP7000_16_BIT_SMC)
-+#elif defined(CONFIG_AP700X_16_BIT_SMC)
- # define __swizzle_addr_b(addr)	(addr ^ 1UL)
- # define __swizzle_addr_w(addr)	(addr)
- # define __swizzle_addr_l(addr)	(addr)
---- /dev/null
-+++ b/include/asm-avr32/arch-at32ap/pm.h
-@@ -0,0 +1,48 @@
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/init.h avr32-2.6/include/asm-avr32/arch-at32ap/init.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/init.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/arch-at32ap/init.h	2008-06-12 15:09:45.855816193 +0200
+@@ -13,10 +13,6 @@
+ void setup_platform(void);
+ void setup_board(void);
+ 
+-/* Called by setup_platform */
+-void at32_clock_init(void);
+-void at32_portmux_init(void);
+-
+ void at32_setup_serial_console(unsigned int usart_id);
+ 
+ #endif /* __ASM_AVR32_AT32AP_INIT_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/pm.h avr32-2.6/include/asm-avr32/arch-at32ap/pm.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/pm.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/arch-at32ap/pm.h	2008-06-12 15:09:45.855816193 +0200
+@@ -0,0 +1,51 @@
 +/*
 + * AVR32 AP Power Management.
 + *
@@ -18499,6 +47446,7 @@
 +
 +#ifndef __ASSEMBLY__
 +extern void cpu_enter_idle(void);
++extern void cpu_enter_standby(unsigned long sdramc_base);
 +
 +extern bool disable_idle_sleep;
 +
@@ -18523,11 +47471,14 @@
 +	else
 +		cpu_enter_idle();
 +}
++
++void intc_set_suspend_handler(unsigned long offset);
 +#endif
 +
 +#endif /* __ASM_AVR32_ARCH_PM_H */
---- a/include/asm-avr32/arch-at32ap/portmux.h
-+++ b/include/asm-avr32/arch-at32ap/portmux.h
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/portmux.h avr32-2.6/include/asm-avr32/arch-at32ap/portmux.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/portmux.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/arch-at32ap/portmux.h	2008-06-12 15:09:45.859816144 +0200
 @@ -26,4 +26,16 @@
  void at32_select_gpio(unsigned int pin, unsigned long flags);
  void at32_reserve_pin(unsigned int pin);
@@ -18545,8 +47496,43 @@
 +#endif /* CONFIG_GPIO_DEV */
 +
  #endif /* __ASM_ARCH_PORTMUX_H__ */
---- a/include/asm-avr32/arch-at32ap/time.h
-+++ /dev/null
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/sram.h avr32-2.6/include/asm-avr32/arch-at32ap/sram.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/sram.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/arch-at32ap/sram.h	2008-06-12 15:09:45.859816144 +0200
+@@ -0,0 +1,30 @@
++/*
++ * Simple SRAM allocator
++ *
++ * Copyright (C) 2008 Atmel Corporation
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++#ifndef __ASM_AVR32_ARCH_SRAM_H
++#define __ASM_AVR32_ARCH_SRAM_H
++
++#include <linux/genalloc.h>
++
++extern struct gen_pool *sram_pool;
++
++static inline unsigned long sram_alloc(size_t len)
++{
++	if (!sram_pool)
++		return 0UL;
++
++	return gen_pool_alloc(sram_pool, len);
++}
++
++static inline void sram_free(unsigned long addr, size_t len)
++{
++	return gen_pool_free(sram_pool, addr, len);
++}
++
++#endif /* __ASM_AVR32_ARCH_SRAM_H */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/arch-at32ap/time.h avr32-2.6/include/asm-avr32/arch-at32ap/time.h
+--- linux-2.6.25.6/include/asm-avr32/arch-at32ap/time.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/arch-at32ap/time.h	1970-01-01 01:00:00.000000000 +0100
 @@ -1,112 +0,0 @@
 -/*
 - * Copyright (C) 2007 Atmel Corporation
@@ -18660,8 +47646,9 @@
 -	__raw_writel((value), port + (0x40 * instance) + TIMER_##reg)
 -
 -#endif /* _ASM_AVR32_ARCH_AT32AP_TIME_H */
---- a/include/asm-avr32/asm.h
-+++ b/include/asm-avr32/asm.h
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/asm.h avr32-2.6/include/asm-avr32/asm.h
+--- linux-2.6.25.6/include/asm-avr32/asm.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/asm.h	2008-06-12 15:04:04.683816631 +0200
 @@ -12,10 +12,10 @@
  #include <asm/asm-offsets.h>
  #include <asm/thread_info.h>
@@ -18677,21 +47664,9 @@
  
  #ifdef CONFIG_FRAME_POINTER
  	.macro	save_fp
---- a/include/asm-avr32/byteorder.h
-+++ b/include/asm-avr32/byteorder.h
-@@ -12,8 +12,10 @@
- extern unsigned short __builtin_bswap_16(unsigned short x);
- #endif
- 
-+#if 0
- #define __arch__swab32(x) __builtin_bswap_32(x)
- #define __arch__swab16(x) __builtin_bswap_16(x)
-+#endif
- 
- #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
- # define __BYTEORDER_HAS_U64__
---- /dev/null
-+++ b/include/asm-avr32/dma-controller.h
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/dma-controller.h avr32-2.6/include/asm-avr32/dma-controller.h
+--- linux-2.6.25.6/include/asm-avr32/dma-controller.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/dma-controller.h	2008-06-12 15:09:45.859816144 +0200
 @@ -0,0 +1,166 @@
 +/*
 + * Copyright (C) 2005-2006 Atmel Corporation
@@ -18859,8 +47834,9 @@
 +extern struct dma_controller *find_dma_controller(int id);
 +
 +#endif /* __ASM_AVR32_DMA_CONTROLLER_H */
---- a/include/asm-avr32/intc.h
-+++ /dev/null
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/intc.h avr32-2.6/include/asm-avr32/intc.h
+--- linux-2.6.25.6/include/asm-avr32/intc.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/intc.h	1970-01-01 01:00:00.000000000 +0100
 @@ -1,128 +0,0 @@
 -#ifndef __ASM_AVR32_INTC_H
 -#define __ASM_AVR32_INTC_H
@@ -18990,329 +47966,92 @@
 -extern int intc_register_controller(struct irq_controller *ctrl);
 -
 -#endif /* __ASM_AVR32_INTC_H */
---- a/include/asm-avr32/irq.h
-+++ b/include/asm-avr32/irq.h
-@@ -11,4 +11,14 @@
- 
- #define irq_canonicalize(i)	(i)
- 
-+#ifndef __ASSEMBLER__
-+int nmi_enable(void);
-+void nmi_disable(void);
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/irq.h avr32-2.6/include/asm-avr32/irq.h
+--- linux-2.6.25.6/include/asm-avr32/irq.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/irq.h	2008-06-12 15:04:04.687816302 +0200
+@@ -14,6 +14,11 @@
+ #ifndef __ASSEMBLER__
+ int nmi_enable(void);
+ void nmi_disable(void);
 +
 +/*
 + * Returns a bitmask of pending interrupts in a group.
 + */
 +extern unsigned long intc_get_pending(unsigned int group);
-+#endif
-+
- #endif /* __ASM_AVR32_IOCTLS_H */
---- a/include/asm-avr32/kdebug.h
-+++ b/include/asm-avr32/kdebug.h
-@@ -5,6 +5,7 @@
- enum die_val {
- 	DIE_BREAKPOINT,
- 	DIE_SSTEP,
-+	DIE_NMI,
- };
- 
- #endif /* __ASM_AVR32_KDEBUG_H */
---- a/include/asm-avr32/ocd.h
-+++ b/include/asm-avr32/ocd.h
-@@ -533,6 +533,11 @@
- #define ocd_read(reg)			__ocd_read(OCD_##reg)
- #define ocd_write(reg, value)		__ocd_write(OCD_##reg, value)
- 
-+struct task_struct;
-+
-+void ocd_enable(struct task_struct *child);
-+void ocd_disable(struct task_struct *child);
-+
- #endif /* !__ASSEMBLER__ */
- 
- #endif /* __ASM_AVR32_OCD_H */
---- a/include/asm-avr32/pgtable.h
-+++ b/include/asm-avr32/pgtable.h
-@@ -157,6 +157,7 @@
- #define _PAGE_S(x)	_PAGE_NORMAL(x)
- 
- #define PAGE_COPY	_PAGE_P(PAGE_WRITE | PAGE_READ)
-+#define PAGE_SHARED	_PAGE_S(PAGE_WRITE | PAGE_READ)
+ #endif
  
- #ifndef __ASSEMBLY__
- /*
---- a/include/asm-avr32/processor.h
-+++ b/include/asm-avr32/processor.h
-@@ -57,11 +57,25 @@
- 	unsigned short cpu_revision;
- 	enum tlb_config tlb_config;
- 	unsigned long features;
-+	u32 device_id;
- 
- 	struct cache_info icache;
- 	struct cache_info dcache;
- };
+ #endif /* __ASM_AVR32_IOCTLS_H */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/page.h avr32-2.6/include/asm-avr32/page.h
+--- linux-2.6.25.6/include/asm-avr32/page.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/page.h	2008-06-12 15:04:04.691816253 +0200
+@@ -8,13 +8,11 @@
+ #ifndef __ASM_AVR32_PAGE_H
+ #define __ASM_AVR32_PAGE_H
+ 
++#include <linux/const.h>
++
+ /* PAGE_SHIFT determines the page size */
+ #define PAGE_SHIFT	12
+-#ifdef __ASSEMBLY__
+-#define PAGE_SIZE	(1 << PAGE_SHIFT)
+-#else
+-#define PAGE_SIZE	(1UL << PAGE_SHIFT)
+-#endif
++#define PAGE_SIZE	(_AC(1, UL) << PAGE_SHIFT)
+ #define PAGE_MASK	(~(PAGE_SIZE-1))
+ #define PTE_MASK	PAGE_MASK
  
-+static inline unsigned int avr32_get_manufacturer_id(struct avr32_cpuinfo *cpu)
-+{
-+	return (cpu->device_id >> 1) & 0x7f;
-+}
-+static inline unsigned int avr32_get_product_number(struct avr32_cpuinfo *cpu)
-+{
-+	return (cpu->device_id >> 12) & 0xffff;
-+}
-+static inline unsigned int avr32_get_chip_revision(struct avr32_cpuinfo *cpu)
-+{
-+	return (cpu->device_id >> 28) & 0x0f;
-+}
-+
- extern struct avr32_cpuinfo boot_cpu_data;
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/pci.h avr32-2.6/include/asm-avr32/pci.h
+--- linux-2.6.25.6/include/asm-avr32/pci.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/pci.h	2008-06-12 15:09:45.859816144 +0200
+@@ -5,4 +5,6 @@
  
- #ifdef CONFIG_SMP
---- a/include/asm-avr32/ptrace.h
-+++ b/include/asm-avr32/ptrace.h
-@@ -121,7 +121,15 @@
- };
+ #define PCI_DMA_BUS_IS_PHYS	(1)
  
- #ifdef __KERNEL__
--# define user_mode(regs) (((regs)->sr & MODE_MASK) == MODE_USER)
++#include <asm-generic/pci-dma-compat.h>
 +
-+#include <asm/ocd.h>
+ #endif /* __ASM_AVR32_PCI_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/serial.h avr32-2.6/include/asm-avr32/serial.h
+--- linux-2.6.25.6/include/asm-avr32/serial.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/serial.h	2008-06-12 15:04:04.695816483 +0200
+@@ -0,0 +1,13 @@
++#ifndef _ASM_SERIAL_H
++#define _ASM_SERIAL_H
 +
-+#define arch_ptrace_attach(child)       ocd_enable(child)
-+
-+#define user_mode(regs)                 (((regs)->sr & MODE_MASK) == MODE_USER)
-+#define instruction_pointer(regs)       ((regs)->pc)
-+#define profile_pc(regs)                instruction_pointer(regs)
++/*
++ * This assumes you have a 1.8432 MHz clock for your UART.
++ *
++ * It'd be nice if someone built a serial card with a 24.576 MHz
++ * clock, since the 16550A is capable of handling a top speed of 1.5
++ * megabits/second; but this requires the faster clock.
++ */
++#define BASE_BAUD (1843200 / 16)
 +
- extern void show_regs (struct pt_regs *);
- 
- static __inline__ int valid_user_regs(struct pt_regs *regs)
-@@ -141,9 +149,6 @@
- 	return 0;
- }
- 
--#define instruction_pointer(regs) ((regs)->pc)
--
--#define profile_pc(regs) instruction_pointer(regs)
- 
- #endif /* __KERNEL__ */
- 
---- a/include/asm-avr32/thread_info.h
-+++ b/include/asm-avr32/thread_info.h
++#endif /* _ASM_SERIAL_H */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/thread_info.h avr32-2.6/include/asm-avr32/thread_info.h
+--- linux-2.6.25.6/include/asm-avr32/thread_info.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/asm-avr32/thread_info.h	2008-06-12 15:09:45.859816144 +0200
 @@ -88,6 +88,7 @@
  #define TIF_MEMDIE		6
  #define TIF_RESTORE_SIGMASK	7	/* restore signal mask in do_signal */
  #define TIF_CPU_GOING_TO_SLEEP	8	/* CPU is entering sleep 0 mode */
-+#define TIF_DEBUG		30	/* debugging enabled */
++#define TIF_FREEZE		29
+ #define TIF_DEBUG		30	/* debugging enabled */
  #define TIF_USERSPACE		31      /* true if FS sets userspace */
  
- #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
---- /dev/null
-+++ b/include/linux/atmel_pwm.h
-@@ -0,0 +1,70 @@
-+#ifndef __LINUX_ATMEL_PWM_H
-+#define __LINUX_ATMEL_PWM_H
-+
-+/**
-+ * struct pwm_channel - driver handle to a PWM channel
-+ * @regs: base of this channel's registers
-+ * @index: number of this channel (0..31)
-+ * @mck: base clock rate, which can be prescaled and maybe subdivided
-+ *
-+ * Drivers initialize a pwm_channel structure using pwm_channel_alloc().
-+ * Then they configure its clock rate (derived from MCK), alignment,
-+ * polarity, and duty cycle by writing directly to the channel registers,
-+ * before enabling the channel by calling pwm_channel_enable().
-+ *
-+ * After emitting a PWM signal for the desired length of time, drivers
-+ * may then pwm_channel_disable() or pwm_channel_free().  Both of these
-+ * disable the channel, but when it's freed the IRQ is deconfigured and
-+ * the channel must later be re-allocated and reconfigured.
-+ *
-+ * Note that if the period or duty cycle need to be changed while the
-+ * PWM channel is operating, drivers must use the PWM_CUPD double buffer
-+ * mechanism, either polling until they change or getting implicitly
-+ * notified through a once-per-period interrupt handler.
-+ */
-+struct pwm_channel {
-+	void __iomem	*regs;
-+	unsigned	index;
-+	unsigned long	mck;
-+};
-+
-+extern int pwm_channel_alloc(int index, struct pwm_channel *ch);
-+extern int pwm_channel_free(struct pwm_channel *ch);
-+
-+extern int pwm_clk_alloc(unsigned prescale, unsigned div);
-+extern void pwm_clk_free(unsigned clk);
-+
-+extern int __pwm_channel_onoff(struct pwm_channel *ch, int enabled);
-+
-+#define pwm_channel_enable(ch)	__pwm_channel_onoff((ch), 1)
-+#define pwm_channel_disable(ch)	__pwm_channel_onoff((ch), 0)
-+
-+/* periodic interrupts, mostly for CUPD changes to period or cycle */
-+extern int pwm_channel_handler(struct pwm_channel *ch,
-+		void (*handler)(struct pwm_channel *ch));
-+
-+/* per-channel registers (banked at pwm_channel->regs) */
-+#define PWM_CMR		0x00		/* mode register */
-+#define		PWM_CPR_CPD	(1 << 10)	/* set: CUPD modifies period */
-+#define		PWM_CPR_CPOL	(1 << 9)	/* set: idle high */
-+#define		PWM_CPR_CALG	(1 << 8)	/* set: center align */
-+#define		PWM_CPR_CPRE	(0xf << 0)	/* mask: rate is mck/(2^pre) */
-+#define		PWM_CPR_CLKA	(0xb << 0)	/* rate CLKA */
-+#define		PWM_CPR_CLKB	(0xc << 0)	/* rate CLKB */
-+#define PWM_CDTY	0x04		/* duty cycle (max of CPRD) */
-+#define PWM_CPRD	0x08		/* period (count up from zero) */
-+#define PWM_CCNT	0x0c		/* counter (20 bits?) */
-+#define PWM_CUPD	0x10		/* update CPRD (or CDTY) next period */
-+
-+static inline void
-+pwm_channel_writel(struct pwm_channel *pwmc, unsigned offset, u32 val)
-+{
-+	__raw_writel(val, pwmc->regs + offset);
-+}
-+
-+static inline u32 pwm_channel_readl(struct pwm_channel *pwmc, unsigned offset)
-+{
-+	return __raw_readl(pwmc->regs + offset);
-+}
-+
-+#endif /* __LINUX_ATMEL_PWM_H */
---- /dev/null
-+++ b/include/linux/atmel_serial.h
-@@ -0,0 +1,127 @@
-+/*
-+ * include/linux/atmel_serial.h
-+ *
-+ * Copyright (C) 2005 Ivan Kokshaysky
-+ * Copyright (C) SAN People
-+ *
-+ * USART registers.
-+ * Based on AT91RM9200 datasheet revision E.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or
-+ * (at your option) any later version.
-+ */
+diff --exclude=.git -urN linux-2.6.25.6/include/asm-avr32/xor.h avr32-2.6/include/asm-avr32/xor.h
+--- linux-2.6.25.6/include/asm-avr32/xor.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/asm-avr32/xor.h	2008-06-12 15:04:04.707817453 +0200
+@@ -0,0 +1,6 @@
++#ifndef _ASM_XOR_H
++#define _ASM_XOR_H
 +
-+#ifndef ATMEL_SERIAL_H
-+#define ATMEL_SERIAL_H
-+
-+#define ATMEL_US_CR		0x00			/* Control Register */
-+#define		ATMEL_US_RSTRX		(1 <<  2)		/* Reset Receiver */
-+#define		ATMEL_US_RSTTX		(1 <<  3)		/* Reset Transmitter */
-+#define		ATMEL_US_RXEN		(1 <<  4)		/* Receiver Enable */
-+#define		ATMEL_US_RXDIS		(1 <<  5)		/* Receiver Disable */
-+#define		ATMEL_US_TXEN		(1 <<  6)		/* Transmitter Enable */
-+#define		ATMEL_US_TXDIS		(1 <<  7)		/* Transmitter Disable */
-+#define		ATMEL_US_RSTSTA		(1 <<  8)		/* Reset Status Bits */
-+#define		ATMEL_US_STTBRK		(1 <<  9)		/* Start Break */
-+#define		ATMEL_US_STPBRK		(1 << 10)		/* Stop Break */
-+#define		ATMEL_US_STTTO		(1 << 11)		/* Start Time-out */
-+#define		ATMEL_US_SENDA		(1 << 12)		/* Send Address */
-+#define		ATMEL_US_RSTIT		(1 << 13)		/* Reset Iterations */
-+#define		ATMEL_US_RSTNACK	(1 << 14)		/* Reset Non Acknowledge */
-+#define		ATMEL_US_RETTO		(1 << 15)		/* Rearm Time-out */
-+#define		ATMEL_US_DTREN		(1 << 16)		/* Data Terminal Ready Enable [AT91RM9200 only] */
-+#define		ATMEL_US_DTRDIS		(1 << 17)		/* Data Terminal Ready Disable [AT91RM9200 only] */
-+#define		ATMEL_US_RTSEN		(1 << 18)		/* Request To Send Enable */
-+#define		ATMEL_US_RTSDIS		(1 << 19)		/* Request To Send Disable */
-+
-+#define ATMEL_US_MR		0x04			/* Mode Register */
-+#define		ATMEL_US_USMODE		(0xf <<  0)		/* Mode of the USART */
-+#define			ATMEL_US_USMODE_NORMAL		0
-+#define			ATMEL_US_USMODE_RS485		1
-+#define			ATMEL_US_USMODE_HWHS		2
-+#define			ATMEL_US_USMODE_MODEM		3
-+#define			ATMEL_US_USMODE_ISO7816_T0	4
-+#define			ATMEL_US_USMODE_ISO7816_T1	6
-+#define			ATMEL_US_USMODE_IRDA		8
-+#define		ATMEL_US_USCLKS		(3   <<  4)		/* Clock Selection */
-+#define			ATMEL_US_USCLKS_MCK		(0 <<  4)
-+#define			ATMEL_US_USCLKS_MCK_DIV8	(1 <<  4)
-+#define			ATMEL_US_USCLKS_SCK		(3 <<  4)
-+#define		ATMEL_US_CHRL		(3   <<  6)		/* Character Length */
-+#define			ATMEL_US_CHRL_5			(0 <<  6)
-+#define			ATMEL_US_CHRL_6			(1 <<  6)
-+#define			ATMEL_US_CHRL_7			(2 <<  6)
-+#define			ATMEL_US_CHRL_8			(3 <<  6)
-+#define		ATMEL_US_SYNC		(1 <<  8)		/* Synchronous Mode Select */
-+#define		ATMEL_US_PAR		(7 <<  9)		/* Parity Type */
-+#define			ATMEL_US_PAR_EVEN		(0 <<  9)
-+#define			ATMEL_US_PAR_ODD		(1 <<  9)
-+#define			ATMEL_US_PAR_SPACE		(2 <<  9)
-+#define			ATMEL_US_PAR_MARK		(3 <<  9)
-+#define			ATMEL_US_PAR_NONE		(4 <<  9)
-+#define			ATMEL_US_PAR_MULTI_DROP		(6 <<  9)
-+#define		ATMEL_US_NBSTOP		(3 << 12)		/* Number of Stop Bits */
-+#define			ATMEL_US_NBSTOP_1		(0 << 12)
-+#define			ATMEL_US_NBSTOP_1_5		(1 << 12)
-+#define			ATMEL_US_NBSTOP_2		(2 << 12)
-+#define		ATMEL_US_CHMODE		(3 << 14)		/* Channel Mode */
-+#define			ATMEL_US_CHMODE_NORMAL		(0 << 14)
-+#define			ATMEL_US_CHMODE_ECHO		(1 << 14)
-+#define			ATMEL_US_CHMODE_LOC_LOOP	(2 << 14)
-+#define			ATMEL_US_CHMODE_REM_LOOP	(3 << 14)
-+#define		ATMEL_US_MSBF		(1 << 16)		/* Bit Order */
-+#define		ATMEL_US_MODE9		(1 << 17)		/* 9-bit Character Length */
-+#define		ATMEL_US_CLKO		(1 << 18)		/* Clock Output Select */
-+#define		ATMEL_US_OVER		(1 << 19)		/* Oversampling Mode */
-+#define		ATMEL_US_INACK		(1 << 20)		/* Inhibit Non Acknowledge */
-+#define		ATMEL_US_DSNACK		(1 << 21)		/* Disable Successive NACK */
-+#define		ATMEL_US_MAX_ITER	(7 << 24)		/* Max Iterations */
-+#define		ATMEL_US_FILTER		(1 << 28)		/* Infrared Receive Line Filter */
-+
-+#define ATMEL_US_IER		0x08			/* Interrupt Enable Register */
-+#define		ATMEL_US_RXRDY		(1 <<  0)		/* Receiver Ready */
-+#define		ATMEL_US_TXRDY		(1 <<  1)		/* Transmitter Ready */
-+#define		ATMEL_US_RXBRK		(1 <<  2)		/* Break Received / End of Break */
-+#define		ATMEL_US_ENDRX		(1 <<  3)		/* End of Receiver Transfer */
-+#define		ATMEL_US_ENDTX		(1 <<  4)		/* End of Transmitter Transfer */
-+#define		ATMEL_US_OVRE		(1 <<  5)		/* Overrun Error */
-+#define		ATMEL_US_FRAME		(1 <<  6)		/* Framing Error */
-+#define		ATMEL_US_PARE		(1 <<  7)		/* Parity Error */
-+#define		ATMEL_US_TIMEOUT	(1 <<  8)		/* Receiver Time-out */
-+#define		ATMEL_US_TXEMPTY	(1 <<  9)		/* Transmitter Empty */
-+#define		ATMEL_US_ITERATION	(1 << 10)		/* Max number of Repetitions Reached */
-+#define		ATMEL_US_TXBUFE		(1 << 11)		/* Transmission Buffer Empty */
-+#define		ATMEL_US_RXBUFF		(1 << 12)		/* Reception Buffer Full */
-+#define		ATMEL_US_NACK		(1 << 13)		/* Non Acknowledge */
-+#define		ATMEL_US_RIIC		(1 << 16)		/* Ring Indicator Input Change [AT91RM9200 only] */
-+#define		ATMEL_US_DSRIC		(1 << 17)		/* Data Set Ready Input Change [AT91RM9200 only] */
-+#define		ATMEL_US_DCDIC		(1 << 18)		/* Data Carrier Detect Input Change [AT91RM9200 only] */
-+#define		ATMEL_US_CTSIC		(1 << 19)		/* Clear to Send Input Change */
-+#define		ATMEL_US_RI		(1 << 20)		/* RI */
-+#define		ATMEL_US_DSR		(1 << 21)		/* DSR */
-+#define		ATMEL_US_DCD		(1 << 22)		/* DCD */
-+#define		ATMEL_US_CTS		(1 << 23)		/* CTS */
-+
-+#define ATMEL_US_IDR		0x0c			/* Interrupt Disable Register */
-+#define ATMEL_US_IMR		0x10			/* Interrupt Mask Register */
-+#define ATMEL_US_CSR		0x14			/* Channel Status Register */
-+#define ATMEL_US_RHR		0x18			/* Receiver Holding Register */
-+#define ATMEL_US_THR		0x1c			/* Transmitter Holding Register */
-+#define		ATMEL_US_SYNH		(1 << 15)		/* Transmit/Receive Sync [AT91SAM9261 only] */
-+
-+#define ATMEL_US_BRGR		0x20			/* Baud Rate Generator Register */
-+#define		ATMEL_US_CD		(0xffff << 0)		/* Clock Divider */
-+
-+#define ATMEL_US_RTOR		0x24			/* Receiver Time-out Register */
-+#define		ATMEL_US_TO		(0xffff << 0)		/* Time-out Value */
-+
-+#define ATMEL_US_TTGR		0x28			/* Transmitter Timeguard Register */
-+#define		ATMEL_US_TG		(0xff << 0)		/* Timeguard Value */
-+
-+#define ATMEL_US_FIDI		0x40			/* FI DI Ratio Register */
-+#define ATMEL_US_NER		0x44			/* Number of Errors Register */
-+#define ATMEL_US_IF		0x4c			/* IrDA Filter Register */
++#include <asm-generic/xor.h>
 +
 +#endif
---- /dev/null
-+++ b/include/linux/atmel_tc.h
+diff --exclude=.git -urN linux-2.6.25.6/include/linux/atmel_tc.h avr32-2.6/include/linux/atmel_tc.h
+--- linux-2.6.25.6/include/linux/atmel_tc.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/linux/atmel_tc.h	2008-06-12 15:04:07.586819080 +0200
 @@ -0,0 +1,252 @@
 +/*
 + * Timer/Counter Unit (TC) registers.
@@ -19566,8 +48305,21 @@
 +#define     ATMEL_TC_ETRGS	(1 <<  7)	/* external trigger */
 +
 +#endif
---- /dev/null
-+++ b/include/linux/usb/atmel_usba_udc.h
+diff --exclude=.git -urN linux-2.6.25.6/include/linux/fs.h avr32-2.6/include/linux/fs.h
+--- linux-2.6.25.6/include/linux/fs.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/linux/fs.h	2008-06-12 15:09:46.255815187 +0200
+@@ -1691,6 +1691,8 @@
+ extern int invalidate_inode_pages2(struct address_space *mapping);
+ extern int invalidate_inode_pages2_range(struct address_space *mapping,
+ 					 pgoff_t start, pgoff_t end);
++extern void generic_sync_sb_inodes(struct super_block *sb,
++				struct writeback_control *wbc);
+ extern int write_inode_now(struct inode *, int);
+ extern int filemap_fdatawrite(struct address_space *);
+ extern int filemap_flush(struct address_space *);
+diff --exclude=.git -urN linux-2.6.25.6/include/linux/usb/atmel_usba_udc.h avr32-2.6/include/linux/usb/atmel_usba_udc.h
+--- linux-2.6.25.6/include/linux/usb/atmel_usba_udc.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/include/linux/usb/atmel_usba_udc.h	2008-06-12 15:04:07.986816119 +0200
 @@ -0,0 +1,22 @@
 +/*
 + * Platform data definitions for Atmel USBA gadget driver.
@@ -19591,64 +48343,395 @@
 +};
 +
 +#endif /* __LINUX_USB_USBA_H */
---- a/include/video/atmel_lcdc.h
-+++ b/include/video/atmel_lcdc.h
-@@ -22,7 +22,7 @@
- #ifndef __ATMEL_LCDC_H__
- #define __ATMEL_LCDC_H__
- 
-- /* LCD Controller info data structure */
-+ /* LCD Controller info data structure, stored in device platform_data */
- struct atmel_lcdfb_info {
- 	spinlock_t		lock;
- 	struct fb_info		*info;
-@@ -33,7 +33,14 @@
- 	struct platform_device	*pdev;
- 	struct clk		*bus_clk;
- 	struct clk		*lcdc_clk;
--	unsigned int		default_bpp;
-+
-+#ifdef CONFIG_BACKLIGHT_ATMEL_LCDC
-+	struct backlight_device	*backlight;
-+	u8			bl_power;
-+#endif
-+	bool			lcdcon_is_backlight;
-+
-+	u8			default_bpp;
- 	unsigned int		default_lcdcon2;
- 	unsigned int		default_dmacon;
- 	void (*atmel_lcdfb_power_control)(int on);
-@@ -115,20 +122,20 @@
- #define		ATMEL_LCDC_MEMOR_LITTLE		(1 << 31)
- 
- #define ATMEL_LCDC_TIM1		0x0808
--#define	ATMEL_LCDC_VFP		(0xff <<  0)
-+#define	ATMEL_LCDC_VFP		(0xffU <<  0)
- #define	ATMEL_LCDC_VBP_OFFSET		8
--#define	ATMEL_LCDC_VBP		(0xff <<  ATMEL_LCDC_VBP_OFFSET)
-+#define	ATMEL_LCDC_VBP		(0xffU <<  ATMEL_LCDC_VBP_OFFSET)
- #define	ATMEL_LCDC_VPW_OFFSET		16
--#define	ATMEL_LCDC_VPW		(0x3f << ATMEL_LCDC_VPW_OFFSET)
-+#define	ATMEL_LCDC_VPW		(0x3fU << ATMEL_LCDC_VPW_OFFSET)
- #define	ATMEL_LCDC_VHDLY_OFFSET		24
--#define	ATMEL_LCDC_VHDLY	(0xf  << ATMEL_LCDC_VHDLY_OFFSET)
-+#define	ATMEL_LCDC_VHDLY	(0xfU  << ATMEL_LCDC_VHDLY_OFFSET)
- 
- #define ATMEL_LCDC_TIM2		0x080c
--#define	ATMEL_LCDC_HBP		(0xff  <<  0)
-+#define	ATMEL_LCDC_HBP		(0xffU  <<  0)
- #define	ATMEL_LCDC_HPW_OFFSET		8
--#define	ATMEL_LCDC_HPW		(0x3f  <<  ATMEL_LCDC_HPW_OFFSET)
-+#define	ATMEL_LCDC_HPW		(0x3fU  <<  ATMEL_LCDC_HPW_OFFSET)
- #define	ATMEL_LCDC_HFP_OFFSET		21
--#define	ATMEL_LCDC_HFP		(0x7ff << ATMEL_LCDC_HFP_OFFSET)
-+#define	ATMEL_LCDC_HFP		(0x7ffU << ATMEL_LCDC_HFP_OFFSET)
- 
- #define ATMEL_LCDC_LCDFRMCFG	0x0810
- #define	ATMEL_LCDC_LINEVAL	(0x7ff <<  0)
---- a/init/do_mounts.c
-+++ b/init/do_mounts.c
-@@ -219,8 +219,14 @@
+diff --exclude=.git -urN linux-2.6.25.6/include/mtd/Kbuild avr32-2.6/include/mtd/Kbuild
+--- linux-2.6.25.6/include/mtd/Kbuild	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/mtd/Kbuild	2008-06-12 15:04:08.018816005 +0200
+@@ -3,5 +3,4 @@
+ header-y += mtd-abi.h
+ header-y += mtd-user.h
+ header-y += nftl-user.h
+-header-y += ubi-header.h
+ header-y += ubi-user.h
+diff --exclude=.git -urN linux-2.6.25.6/include/mtd/ubi-header.h avr32-2.6/include/mtd/ubi-header.h
+--- linux-2.6.25.6/include/mtd/ubi-header.h	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/include/mtd/ubi-header.h	1970-01-01 01:00:00.000000000 +0100
+@@ -1,372 +0,0 @@
+-/*
+- * Copyright (c) International Business Machines Corp., 2006
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License as published by
+- * the Free Software Foundation; either version 2 of the License, or
+- * (at your option) any later version.
+- *
+- * This program is distributed in the hope that it will be useful,
+- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+- * the GNU General Public License for more details.
+- *
+- * You should have received a copy of the GNU General Public License
+- * along with this program; if not, write to the Free Software
+- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+- *
+- * Authors: Artem Bityutskiy (Битюцкий Артём)
+- *          Thomas Gleixner
+- *          Frank Haverkamp
+- *          Oliver Lohmann
+- *          Andreas Arnez
+- */
+-
+-/*
+- * This file defines the layout of UBI headers and all the other UBI on-flash
+- * data structures. May be included by user-space.
+- */
+-
+-#ifndef __UBI_HEADER_H__
+-#define __UBI_HEADER_H__
+-
+-#include <asm/byteorder.h>
+-
+-/* The version of UBI images supported by this implementation */
+-#define UBI_VERSION 1
+-
+-/* The highest erase counter value supported by this implementation */
+-#define UBI_MAX_ERASECOUNTER 0x7FFFFFFF
+-
+-/* The initial CRC32 value used when calculating CRC checksums */
+-#define UBI_CRC32_INIT 0xFFFFFFFFU
+-
+-/* Erase counter header magic number (ASCII "UBI#") */
+-#define UBI_EC_HDR_MAGIC  0x55424923
+-/* Volume identifier header magic number (ASCII "UBI!") */
+-#define UBI_VID_HDR_MAGIC 0x55424921
+-
+-/*
+- * Volume type constants used in the volume identifier header.
+- *
+- * @UBI_VID_DYNAMIC: dynamic volume
+- * @UBI_VID_STATIC: static volume
+- */
+-enum {
+-	UBI_VID_DYNAMIC = 1,
+-	UBI_VID_STATIC  = 2
+-};
+-
+-/*
+- * Volume flags used in the volume table record.
+- *
+- * @UBI_VTBL_AUTORESIZE_FLG: auto-resize this volume
+- *
+- * %UBI_VTBL_AUTORESIZE_FLG flag can be set only for one volume in the volume
+- * table. UBI automatically re-sizes the volume which has this flag and makes
+- * the volume to be of largest possible size. This means that if after the
+- * initialization UBI finds out that there are available physical eraseblocks
+- * present on the device, it automatically appends all of them to the volume
+- * (the physical eraseblocks reserved for bad eraseblocks handling and other
+- * reserved physical eraseblocks are not taken). So, if there is a volume with
+- * the %UBI_VTBL_AUTORESIZE_FLG flag set, the amount of available logical
+- * eraseblocks will be zero after UBI is loaded, because all of them will be
+- * reserved for this volume. Note, the %UBI_VTBL_AUTORESIZE_FLG bit is cleared
+- * after the volume had been initialized.
+- *
+- * The auto-resize feature is useful for device production purposes. For
+- * example, different NAND flash chips may have different amount of initial bad
+- * eraseblocks, depending of particular chip instance. Manufacturers of NAND
+- * chips usually guarantee that the amount of initial bad eraseblocks does not
+- * exceed certain percent, e.g. 2%. When one creates an UBI image which will be
+- * flashed to the end devices in production, he does not know the exact amount
+- * of good physical eraseblocks the NAND chip on the device will have, but this
+- * number is required to calculate the volume sized and put them to the volume
+- * table of the UBI image. In this case, one of the volumes (e.g., the one
+- * which will store the root file system) is marked as "auto-resizable", and
+- * UBI will adjust its size on the first boot if needed.
+- *
+- * Note, first UBI reserves some amount of physical eraseblocks for bad
+- * eraseblock handling, and then re-sizes the volume, not vice-versa. This
+- * means that the pool of reserved physical eraseblocks will always be present.
+- */
+-enum {
+-	UBI_VTBL_AUTORESIZE_FLG = 0x01,
+-};
+-
+-/*
+- * Compatibility constants used by internal volumes.
+- *
+- * @UBI_COMPAT_DELETE: delete this internal volume before anything is written
+- * to the flash
+- * @UBI_COMPAT_RO: attach this device in read-only mode
+- * @UBI_COMPAT_PRESERVE: preserve this internal volume - do not touch its
+- * physical eraseblocks, don't allow the wear-leveling unit to move them
+- * @UBI_COMPAT_REJECT: reject this UBI image
+- */
+-enum {
+-	UBI_COMPAT_DELETE   = 1,
+-	UBI_COMPAT_RO       = 2,
+-	UBI_COMPAT_PRESERVE = 4,
+-	UBI_COMPAT_REJECT   = 5
+-};
+-
+-/* Sizes of UBI headers */
+-#define UBI_EC_HDR_SIZE  sizeof(struct ubi_ec_hdr)
+-#define UBI_VID_HDR_SIZE sizeof(struct ubi_vid_hdr)
+-
+-/* Sizes of UBI headers without the ending CRC */
+-#define UBI_EC_HDR_SIZE_CRC  (UBI_EC_HDR_SIZE  - sizeof(__be32))
+-#define UBI_VID_HDR_SIZE_CRC (UBI_VID_HDR_SIZE - sizeof(__be32))
+-
+-/**
+- * struct ubi_ec_hdr - UBI erase counter header.
+- * @magic: erase counter header magic number (%UBI_EC_HDR_MAGIC)
+- * @version: version of UBI implementation which is supposed to accept this
+- * UBI image
+- * @padding1: reserved for future, zeroes
+- * @ec: the erase counter
+- * @vid_hdr_offset: where the VID header starts
+- * @data_offset: where the user data start
+- * @padding2: reserved for future, zeroes
+- * @hdr_crc: erase counter header CRC checksum
+- *
+- * The erase counter header takes 64 bytes and has a plenty of unused space for
+- * future usage. The unused fields are zeroed. The @version field is used to
+- * indicate the version of UBI implementation which is supposed to be able to
+- * work with this UBI image. If @version is greater then the current UBI
+- * version, the image is rejected. This may be useful in future if something
+- * is changed radically. This field is duplicated in the volume identifier
+- * header.
+- *
+- * The @vid_hdr_offset and @data_offset fields contain the offset of the the
+- * volume identifier header and user data, relative to the beginning of the
+- * physical eraseblock. These values have to be the same for all physical
+- * eraseblocks.
+- */
+-struct ubi_ec_hdr {
+-	__be32  magic;
+-	__u8    version;
+-	__u8    padding1[3];
+-	__be64  ec; /* Warning: the current limit is 31-bit anyway! */
+-	__be32  vid_hdr_offset;
+-	__be32  data_offset;
+-	__u8    padding2[36];
+-	__be32  hdr_crc;
+-} __attribute__ ((packed));
+-
+-/**
+- * struct ubi_vid_hdr - on-flash UBI volume identifier header.
+- * @magic: volume identifier header magic number (%UBI_VID_HDR_MAGIC)
+- * @version: UBI implementation version which is supposed to accept this UBI
+- * image (%UBI_VERSION)
+- * @vol_type: volume type (%UBI_VID_DYNAMIC or %UBI_VID_STATIC)
+- * @copy_flag: if this logical eraseblock was copied from another physical
+- * eraseblock (for wear-leveling reasons)
+- * @compat: compatibility of this volume (%0, %UBI_COMPAT_DELETE,
+- * %UBI_COMPAT_IGNORE, %UBI_COMPAT_PRESERVE, or %UBI_COMPAT_REJECT)
+- * @vol_id: ID of this volume
+- * @lnum: logical eraseblock number
+- * @leb_ver: version of this logical eraseblock (IMPORTANT: obsolete, to be
+- * removed, kept only for not breaking older UBI users)
+- * @data_size: how many bytes of data this logical eraseblock contains
+- * @used_ebs: total number of used logical eraseblocks in this volume
+- * @data_pad: how many bytes at the end of this physical eraseblock are not
+- * used
+- * @data_crc: CRC checksum of the data stored in this logical eraseblock
+- * @padding1: reserved for future, zeroes
+- * @sqnum: sequence number
+- * @padding2: reserved for future, zeroes
+- * @hdr_crc: volume identifier header CRC checksum
+- *
+- * The @sqnum is the value of the global sequence counter at the time when this
+- * VID header was created. The global sequence counter is incremented each time
+- * UBI writes a new VID header to the flash, i.e. when it maps a logical
+- * eraseblock to a new physical eraseblock. The global sequence counter is an
+- * unsigned 64-bit integer and we assume it never overflows. The @sqnum
+- * (sequence number) is used to distinguish between older and newer versions of
+- * logical eraseblocks.
+- *
+- * There are 2 situations when there may be more then one physical eraseblock
+- * corresponding to the same logical eraseblock, i.e., having the same @vol_id
+- * and @lnum values in the volume identifier header. Suppose we have a logical
+- * eraseblock L and it is mapped to the physical eraseblock P.
+- *
+- * 1. Because UBI may erase physical eraseblocks asynchronously, the following
+- * situation is possible: L is asynchronously erased, so P is scheduled for
+- * erasure, then L is written to,i.e. mapped to another physical eraseblock P1,
+- * so P1 is written to, then an unclean reboot happens. Result - there are 2
+- * physical eraseblocks P and P1 corresponding to the same logical eraseblock
+- * L. But P1 has greater sequence number, so UBI picks P1 when it attaches the
+- * flash.
+- *
+- * 2. From time to time UBI moves logical eraseblocks to other physical
+- * eraseblocks for wear-leveling reasons. If, for example, UBI moves L from P
+- * to P1, and an unclean reboot happens before P is physically erased, there
+- * are two physical eraseblocks P and P1 corresponding to L and UBI has to
+- * select one of them when the flash is attached. The @sqnum field says which
+- * PEB is the original (obviously P will have lower @sqnum) and the copy. But
+- * it is not enough to select the physical eraseblock with the higher sequence
+- * number, because the unclean reboot could have happen in the middle of the
+- * copying process, so the data in P is corrupted. It is also not enough to
+- * just select the physical eraseblock with lower sequence number, because the
+- * data there may be old (consider a case if more data was added to P1 after
+- * the copying). Moreover, the unclean reboot may happen when the erasure of P
+- * was just started, so it result in unstable P, which is "mostly" OK, but
+- * still has unstable bits.
+- *
+- * UBI uses the @copy_flag field to indicate that this logical eraseblock is a
+- * copy. UBI also calculates data CRC when the data is moved and stores it at
+- * the @data_crc field of the copy (P1). So when UBI needs to pick one physical
+- * eraseblock of two (P or P1), the @copy_flag of the newer one (P1) is
+- * examined. If it is cleared, the situation* is simple and the newer one is
+- * picked. If it is set, the data CRC of the copy (P1) is examined. If the CRC
+- * checksum is correct, this physical eraseblock is selected (P1). Otherwise
+- * the older one (P) is selected.
+- *
+- * Note, there is an obsolete @leb_ver field which was used instead of @sqnum
+- * in the past. But it is not used anymore and we keep it in order to be able
+- * to deal with old UBI images. It will be removed at some point.
+- *
+- * There are 2 sorts of volumes in UBI: user volumes and internal volumes.
+- * Internal volumes are not seen from outside and are used for various internal
+- * UBI purposes. In this implementation there is only one internal volume - the
+- * layout volume. Internal volumes are the main mechanism of UBI extensions.
+- * For example, in future one may introduce a journal internal volume. Internal
+- * volumes have their own reserved range of IDs.
+- *
+- * The @compat field is only used for internal volumes and contains the "degree
+- * of their compatibility". It is always zero for user volumes. This field
+- * provides a mechanism to introduce UBI extensions and to be still compatible
+- * with older UBI binaries. For example, if someone introduced a journal in
+- * future, he would probably use %UBI_COMPAT_DELETE compatibility for the
+- * journal volume.  And in this case, older UBI binaries, which know nothing
+- * about the journal volume, would just delete this volume and work perfectly
+- * fine. This is similar to what Ext2fs does when it is fed by an Ext3fs image
+- * - it just ignores the Ext3fs journal.
+- *
+- * The @data_crc field contains the CRC checksum of the contents of the logical
+- * eraseblock if this is a static volume. In case of dynamic volumes, it does
+- * not contain the CRC checksum as a rule. The only exception is when the
+- * data of the physical eraseblock was moved by the wear-leveling unit, then
+- * the wear-leveling unit calculates the data CRC and stores it in the
+- * @data_crc field. And of course, the @copy_flag is %in this case.
+- *
+- * The @data_size field is used only for static volumes because UBI has to know
+- * how many bytes of data are stored in this eraseblock. For dynamic volumes,
+- * this field usually contains zero. The only exception is when the data of the
+- * physical eraseblock was moved to another physical eraseblock for
+- * wear-leveling reasons. In this case, UBI calculates CRC checksum of the
+- * contents and uses both @data_crc and @data_size fields. In this case, the
+- * @data_size field contains data size.
+- *
+- * The @used_ebs field is used only for static volumes and indicates how many
+- * eraseblocks the data of the volume takes. For dynamic volumes this field is
+- * not used and always contains zero.
+- *
+- * The @data_pad is calculated when volumes are created using the alignment
+- * parameter. So, effectively, the @data_pad field reduces the size of logical
+- * eraseblocks of this volume. This is very handy when one uses block-oriented
+- * software (say, cramfs) on top of the UBI volume.
+- */
+-struct ubi_vid_hdr {
+-	__be32  magic;
+-	__u8    version;
+-	__u8    vol_type;
+-	__u8    copy_flag;
+-	__u8    compat;
+-	__be32  vol_id;
+-	__be32  lnum;
+-	__be32  leb_ver; /* obsolete, to be removed, don't use */
+-	__be32  data_size;
+-	__be32  used_ebs;
+-	__be32  data_pad;
+-	__be32  data_crc;
+-	__u8    padding1[4];
+-	__be64  sqnum;
+-	__u8    padding2[12];
+-	__be32  hdr_crc;
+-} __attribute__ ((packed));
+-
+-/* Internal UBI volumes count */
+-#define UBI_INT_VOL_COUNT 1
+-
+-/*
+- * Starting ID of internal volumes. There is reserved room for 4096 internal
+- * volumes.
+- */
+-#define UBI_INTERNAL_VOL_START (0x7FFFFFFF - 4096)
+-
+-/* The layout volume contains the volume table */
+-
+-#define UBI_LAYOUT_VOLUME_ID     UBI_INTERNAL_VOL_START
+-#define UBI_LAYOUT_VOLUME_TYPE   UBI_VID_DYNAMIC
+-#define UBI_LAYOUT_VOLUME_ALIGN  1
+-#define UBI_LAYOUT_VOLUME_EBS    2
+-#define UBI_LAYOUT_VOLUME_NAME   "layout volume"
+-#define UBI_LAYOUT_VOLUME_COMPAT UBI_COMPAT_REJECT
+-
+-/* The maximum number of volumes per one UBI device */
+-#define UBI_MAX_VOLUMES 128
+-
+-/* The maximum volume name length */
+-#define UBI_VOL_NAME_MAX 127
+-
+-/* Size of the volume table record */
+-#define UBI_VTBL_RECORD_SIZE sizeof(struct ubi_vtbl_record)
+-
+-/* Size of the volume table record without the ending CRC */
+-#define UBI_VTBL_RECORD_SIZE_CRC (UBI_VTBL_RECORD_SIZE - sizeof(__be32))
+-
+-/**
+- * struct ubi_vtbl_record - a record in the volume table.
+- * @reserved_pebs: how many physical eraseblocks are reserved for this volume
+- * @alignment: volume alignment
+- * @data_pad: how many bytes are unused at the end of the each physical
+- * eraseblock to satisfy the requested alignment
+- * @vol_type: volume type (%UBI_DYNAMIC_VOLUME or %UBI_STATIC_VOLUME)
+- * @upd_marker: if volume update was started but not finished
+- * @name_len: volume name length
+- * @name: the volume name
+- * @flags: volume flags (%UBI_VTBL_AUTORESIZE_FLG)
+- * @padding: reserved, zeroes
+- * @crc: a CRC32 checksum of the record
+- *
+- * The volume table records are stored in the volume table, which is stored in
+- * the layout volume. The layout volume consists of 2 logical eraseblock, each
+- * of which contains a copy of the volume table (i.e., the volume table is
+- * duplicated). The volume table is an array of &struct ubi_vtbl_record
+- * objects indexed by the volume ID.
+- *
+- * If the size of the logical eraseblock is large enough to fit
+- * %UBI_MAX_VOLUMES records, the volume table contains %UBI_MAX_VOLUMES
+- * records. Otherwise, it contains as many records as it can fit (i.e., size of
+- * logical eraseblock divided by sizeof(struct ubi_vtbl_record)).
+- *
+- * The @upd_marker flag is used to implement volume update. It is set to %1
+- * before update and set to %0 after the update. So if the update operation was
+- * interrupted, UBI knows that the volume is corrupted.
+- *
+- * The @alignment field is specified when the volume is created and cannot be
+- * later changed. It may be useful, for example, when a block-oriented file
+- * system works on top of UBI. The @data_pad field is calculated using the
+- * logical eraseblock size and @alignment. The alignment must be multiple to the
+- * minimal flash I/O unit. If @alignment is 1, all the available space of
+- * the physical eraseblocks is used.
+- *
+- * Empty records contain all zeroes and the CRC checksum of those zeroes.
+- */
+-struct ubi_vtbl_record {
+-	__be32  reserved_pebs;
+-	__be32  alignment;
+-	__be32  data_pad;
+-	__u8    vol_type;
+-	__u8    upd_marker;
+-	__be16  name_len;
+-	__u8    name[UBI_VOL_NAME_MAX+1];
+-	__u8    flags;
+-	__u8    padding[23];
+-	__be32  crc;
+-} __attribute__ ((packed));
+-
+-#endif /* !__UBI_HEADER_H__ */
+diff --exclude=.git -urN linux-2.6.25.6/init/do_mounts.c avr32-2.6/init/do_mounts.c
+--- linux-2.6.25.6/init/do_mounts.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/init/do_mounts.c	2008-06-12 15:09:46.451815572 +0200
+@@ -126,8 +126,14 @@
  
  static int __init rootwait_setup(char *str)
  {
@@ -19664,34 +48747,19 @@
  	root_wait = 1;
  	return 1;
  }
---- a/kernel/ptrace.c
-+++ b/kernel/ptrace.c
-@@ -470,6 +470,8 @@
- 	lock_kernel();
- 	if (request == PTRACE_TRACEME) {
- 		ret = ptrace_traceme();
-+		if (!ret)
-+			arch_ptrace_attach(current);
- 		goto out;
- 	}
- 
---- a/MAINTAINERS
-+++ b/MAINTAINERS
-@@ -671,6 +671,12 @@
- W:	http://www.at91.com/
- S:	Maintained
- 
-+ATMEL AT91 / AT32 SERIAL DRIVER
-+P:	Haavard Skinnemoen
-+M:	hskinnemoen@atmel.com
-+L:	linux-kernel@vger.kernel.org
-+S:	Supported
-+
- ATMEL LCDFB DRIVER
- P:	Nicolas Ferre
- M:	nicolas.ferre@atmel.com
---- /dev/null
-+++ b/sound/avr32/ac97c.c
+@@ -347,7 +353,8 @@
+ 
+ 	if (saved_root_name[0]) {
+ 		root_device_name = saved_root_name;
+-		if (!strncmp(root_device_name, "mtd", 3)) {
++		if (!strncmp(root_device_name, "mtd", 3) ||
++		    !strncmp(root_device_name, "ubi", 3)) {
+ 			mount_block_root(root_device_name, root_mountflags);
+ 			goto out;
+ 		}
+diff --exclude=.git -urN linux-2.6.25.6/sound/avr32/ac97c.c avr32-2.6/sound/avr32/ac97c.c
+--- linux-2.6.25.6/sound/avr32/ac97c.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/avr32/ac97c.c	2008-06-12 15:09:47.011815952 +0200
 @@ -0,0 +1,914 @@
 +/*
 + * Driver for the Atmel AC97 controller
@@ -20360,7 +49428,7 @@
 +			ac97c_writel(chip, COTHR, word);
 +			goto read_reg;
 +		}
-+		mdelay(10);
++		udelay(10);
 +	} while (--timeout);
 +
 +	if (!--write)
@@ -20373,7 +49441,7 @@
 +			unsigned short val = ac97c_readl(chip, CORHR);
 +			return val;
 +		}
-+		mdelay(10);
++		udelay(10);
 +	} while (--timeout);
 +
 +	if (!--write)
@@ -20607,8 +49675,9 @@
 +MODULE_LICENSE("GPL");
 +MODULE_DESCRIPTION("Driver for Atmel AC97 Controller");
 +MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
---- /dev/null
-+++ b/sound/avr32/ac97c.h
+diff --exclude=.git -urN linux-2.6.25.6/sound/avr32/ac97c.h avr32-2.6/sound/avr32/ac97c.h
+--- linux-2.6.25.6/sound/avr32/ac97c.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/avr32/ac97c.h	2008-06-12 15:09:47.011815952 +0200
 @@ -0,0 +1,71 @@
 +/*
 + * Register definitions for the Atmel AC97 Controller.
@@ -20681,8 +49750,9 @@
 +#define AC97C_CHANNEL_B		0x2
 +
 +#endif /* __SOUND_AVR32_AC97C_H */
---- /dev/null
-+++ b/sound/avr32/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/sound/avr32/Kconfig avr32-2.6/sound/avr32/Kconfig
+--- linux-2.6.25.6/sound/avr32/Kconfig	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/avr32/Kconfig	2008-06-12 15:09:47.011815952 +0200
 @@ -0,0 +1,11 @@
 +menu "AVR32 devices"
 +	depends on SND != n && AVR32
@@ -20695,14 +49765,16 @@
 +	  ALSA sound driver for the Atmel AC97 controller.
 +
 +endmenu
---- /dev/null
-+++ b/sound/avr32/Makefile
+diff --exclude=.git -urN linux-2.6.25.6/sound/avr32/Makefile avr32-2.6/sound/avr32/Makefile
+--- linux-2.6.25.6/sound/avr32/Makefile	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/avr32/Makefile	2008-06-12 15:09:47.011815952 +0200
 @@ -0,0 +1,3 @@
 +snd-atmel-ac97-objs		:= ac97c.o
 +
 +obj-$(CONFIG_SND_ATMEL_AC97)	+= snd-atmel-ac97.o
---- a/sound/Kconfig
-+++ b/sound/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/sound/Kconfig avr32-2.6/sound/Kconfig
+--- linux-2.6.25.6/sound/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/Kconfig	2008-06-12 15:09:47.011815952 +0200
 @@ -63,6 +63,8 @@
  
  source "sound/arm/Kconfig"
@@ -20712,8 +49784,9 @@
  if SPI
  source "sound/spi/Kconfig"
  endif
---- a/sound/Makefile
-+++ b/sound/Makefile
+diff --exclude=.git -urN linux-2.6.25.6/sound/Makefile avr32-2.6/sound/Makefile
+--- linux-2.6.25.6/sound/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/Makefile	2008-06-12 15:09:47.011815952 +0200
 @@ -6,7 +6,7 @@
  obj-$(CONFIG_SOUND_PRIME) += oss/
  obj-$(CONFIG_DMASOUND) += oss/
@@ -20723,8 +49796,9 @@
  obj-$(CONFIG_SND_AOA) += aoa/
  
  # This one must be compilable even if sound is configured out
---- /dev/null
-+++ b/sound/oss/at32_abdac.c
+diff --exclude=.git -urN linux-2.6.25.6/sound/oss/at32_abdac.c avr32-2.6/sound/oss/at32_abdac.c
+--- linux-2.6.25.6/sound/oss/at32_abdac.c	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/oss/at32_abdac.c	2008-06-12 15:09:47.027815755 +0200
 @@ -0,0 +1,722 @@
 +/*
 + * OSS Sound Driver for the Atmel AT32 on-chip DAC.
@@ -21448,8 +50522,9 @@
 +MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
 +MODULE_DESCRIPTION("Sound Driver for the Atmel AT32 ABDAC");
 +MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/sound/oss/at32_abdac.h
+diff --exclude=.git -urN linux-2.6.25.6/sound/oss/at32_abdac.h avr32-2.6/sound/oss/at32_abdac.h
+--- linux-2.6.25.6/sound/oss/at32_abdac.h	1970-01-01 01:00:00.000000000 +0100
++++ avr32-2.6/sound/oss/at32_abdac.h	2008-06-12 15:09:47.027815755 +0200
 @@ -0,0 +1,59 @@
 +/*
 + * Register definitions for the Atmel AT32 on-chip DAC.
@@ -21510,8 +50585,9 @@
 +	__raw_writel((value), (port)->regs + DAC_##reg)
 +
 +#endif /* __SOUND_OSS_AT32_ABDAC_H__ */
---- a/sound/oss/Kconfig
-+++ b/sound/oss/Kconfig
+diff --exclude=.git -urN linux-2.6.25.6/sound/oss/Kconfig avr32-2.6/sound/oss/Kconfig
+--- linux-2.6.25.6/sound/oss/Kconfig	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/oss/Kconfig	2008-06-12 15:09:47.023815804 +0200
 @@ -654,3 +654,7 @@
  	int "DAC channel"
  	default "1"
@@ -21520,9 +50596,10 @@
 +config SOUND_AT32_ABDAC
 +	tristate "Atmel AT32 Audio Bitstream DAC (ABDAC) support"
 +	depends on SOUND_PRIME && AVR32
---- a/sound/oss/Makefile
-+++ b/sound/oss/Makefile
-@@ -10,6 +10,7 @@
+diff --exclude=.git -urN linux-2.6.25.6/sound/oss/Makefile avr32-2.6/sound/oss/Makefile
+--- linux-2.6.25.6/sound/oss/Makefile	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/oss/Makefile	2008-06-12 15:09:47.023815804 +0200
+@@ -9,6 +9,7 @@
  
  # Please leave it as is, cause the link order is significant !
  
@@ -21530,9 +50607,10 @@
  obj-$(CONFIG_SOUND_SH_DAC_AUDIO)	+= sh_dac_audio.o
  obj-$(CONFIG_SOUND_HAL2)	+= hal2.o
  obj-$(CONFIG_SOUND_AEDSP16)	+= aedsp16.o
---- a/sound/spi/at73c213.c
-+++ b/sound/spi/at73c213.c
-@@ -744,7 +744,7 @@
+diff --exclude=.git -urN linux-2.6.25.6/sound/spi/at73c213.c avr32-2.6/sound/spi/at73c213.c
+--- linux-2.6.25.6/sound/spi/at73c213.c	2008-06-09 20:27:19.000000000 +0200
++++ avr32-2.6/sound/spi/at73c213.c	2008-06-12 15:09:47.247815006 +0200
+@@ -737,7 +737,7 @@
  /*
   * Device functions
   */
@@ -21541,7 +50619,7 @@
  {
  	/*
  	 * Continuous clock output.
-@@ -774,7 +774,7 @@
+@@ -767,7 +767,7 @@
  	return 0;
  }
  
@@ -21550,7 +50628,7 @@
  {
  	int retval;
  	unsigned char dac_ctrl = 0;
-@@ -939,7 +939,7 @@
+@@ -933,7 +933,7 @@
  	return retval;
  }
  
diff --git a/target/linux/avr32/patches/120-cpufreq_panic.patch b/target/linux/avr32/patches/120-cpufreq_panic.patch
deleted file mode 100644
index fe9576ce64..0000000000
--- a/target/linux/avr32/patches/120-cpufreq_panic.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-From: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
-Date: Tue, 27 May 2008 07:37:42 +0000 (+0200)
-Subject: avr32: Fix cpufreq oops when ondemand governor is default
-X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fhskinnemoen%2Favr32-2.6.git;a=commitdiff_plain;h=f04d264afc51acdffeba9cdf3baf04116687680c
-
-avr32: Fix cpufreq oops when ondemand governor is default
-
-Move the AP7 cpufreq init to late_initcall() so that we don't try to
-bring up cpufreq until the governor is ready. x86 also uses
-late_initcall() for this.
-
-Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
----
-
-diff --git a/arch/avr32/mach-at32ap/cpufreq.c b/arch/avr32/mach-at32ap/cpufreq.c
-index 235524b..5dd8d25 100644
---- a/arch/avr32/mach-at32ap/cpufreq.c
-+++ b/arch/avr32/mach-at32ap/cpufreq.c
-@@ -108,5 +108,4 @@ static int __init at32_cpufreq_init(void)
- {
- 	return cpufreq_register_driver(&at32_driver);
- }
--
--arch_initcall(at32_cpufreq_init);
-+late_initcall(at32_cpufreq_init);