diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/malta/Makefile | 2 | ||||
| -rw-r--r-- | target/linux/malta/patches-2.6.39/001-mips-malta-fix-crash-smp-kernel-on-non-cmp-systems.patch | 166 |
2 files changed, 167 insertions, 1 deletions
diff --git a/target/linux/malta/Makefile b/target/linux/malta/Makefile index 1a82ea3e8d..994f30605b 100644 --- a/target/linux/malta/Makefile +++ b/target/linux/malta/Makefile @@ -13,7 +13,7 @@ SUBTARGETS:=le be INITRAMFS_EXTRA_FILES:= MAINTAINER:=Florian Fainelli <florian@openwrt.org> -LINUX_VERSION:=2.6.38.6 +LINUX_VERSION:=2.6.39.1 include $(INCLUDE_DIR)/target.mk diff --git a/target/linux/malta/patches-2.6.39/001-mips-malta-fix-crash-smp-kernel-on-non-cmp-systems.patch b/target/linux/malta/patches-2.6.39/001-mips-malta-fix-crash-smp-kernel-on-non-cmp-systems.patch new file mode 100644 index 0000000000..03866df7fe --- /dev/null +++ b/target/linux/malta/patches-2.6.39/001-mips-malta-fix-crash-smp-kernel-on-non-cmp-systems.patch @@ -0,0 +1,166 @@ +From d9a056919c4fa46cd9e094f969032bd4e15bffef Mon Sep 17 00:00:00 2001 +From: Ralf Baechle <ralf@linux-mips.org> +Date: Sat, 28 May 2011 15:27:59 +0100 +Subject: [PATCH] MIPS: Malta: Fix crash SMP kernel on non-CMP systems. + +Since 6be63bbbdab66b9185dc6f67c8b1bacb6f37f946 (lmo) rsp. +af3a1f6f4813907e143f87030cde67a9971db533 (kernel.org) the Malta code does +no longer probe for presence of GCMP if CMP is not configured. This means +that the variable gcmp_present well be left at its default value of -1 +which normally is meant to indicate that GCMP has not yet been mmapped. +This non-zero value is now interpreted as GCMP being present resulting +in a write attempt to a GCMP register resulting in a crash. + +Reported and a build fix on top of my fix by Rob Landley <rob@landley.net>. + +Reported-by: Rob Landley <rob@landley.net> +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +Patchwork: https://patchwork.linux-mips.org/patch/2413/ +(cherry picked from commit c3ddf592134eaab38d051b2e7b23e81201ae423a) +--- + arch/mips/include/asm/smp-ops.h | 41 +++++++++++++++++++++++++++-- + arch/mips/mipssim/sim_setup.c | 17 ++++++------ + arch/mips/mti-malta/malta-init.c | 14 +++++----- + arch/mips/pmc-sierra/msp71xx/msp_setup.c | 8 ++--- + 4 files changed, 56 insertions(+), 24 deletions(-) + +diff --git a/arch/mips/include/asm/smp-ops.h b/arch/mips/include/asm/smp-ops.h +index 9e09af3..48b03ff 100644 +--- a/arch/mips/include/asm/smp-ops.h ++++ b/arch/mips/include/asm/smp-ops.h +@@ -56,8 +56,43 @@ static inline void register_smp_ops(struct plat_smp_ops *ops) + + #endif /* !CONFIG_SMP */ + +-extern struct plat_smp_ops up_smp_ops; +-extern struct plat_smp_ops cmp_smp_ops; +-extern struct plat_smp_ops vsmp_smp_ops; ++static inline int register_up_smp_ops(void) ++{ ++#ifdef CONFIG_SMP_UP ++ extern struct plat_smp_ops up_smp_ops; ++ ++ register_smp_ops(&up_smp_ops); ++ ++ return 0; ++#else ++ return -ENODEV; ++#endif ++} ++ ++static inline int register_cmp_smp_ops(void) ++{ ++#ifdef CONFIG_MIPS_CMP ++ extern struct plat_smp_ops cmp_smp_ops; ++ ++ register_smp_ops(&cmp_smp_ops); ++ ++ return 0; ++#else ++ return -ENODEV; ++#endif ++} ++ ++static inline int register_vsmp_smp_ops(void) ++{ ++#ifdef CONFIG_MIPS_MT_SMP ++ extern struct plat_smp_ops vsmp_smp_ops; ++ ++ register_smp_ops(&vsmp_smp_ops); ++ ++ return 0; ++#else ++ return -ENODEV; ++#endif ++} + + #endif /* __ASM_SMP_OPS_H */ +diff --git a/arch/mips/mipssim/sim_setup.c b/arch/mips/mipssim/sim_setup.c +index 55f22a3..1970069 100644 +--- a/arch/mips/mipssim/sim_setup.c ++++ b/arch/mips/mipssim/sim_setup.c +@@ -59,18 +59,17 @@ void __init prom_init(void) + + prom_meminit(); + +-#ifdef CONFIG_MIPS_MT_SMP +- if (cpu_has_mipsmt) +- register_smp_ops(&vsmp_smp_ops); +- else +- register_smp_ops(&up_smp_ops); +-#endif ++ if (cpu_has_mipsmt) { ++ if (!register_vsmp_smp_ops()) ++ return; ++ + #ifdef CONFIG_MIPS_MT_SMTC +- if (cpu_has_mipsmt) + register_smp_ops(&ssmtc_smp_ops); +- else +- register_smp_ops(&up_smp_ops); ++ return; + #endif ++ } ++ ++ register_up_smp_ops(); + } + + static void __init serial_init(void) +diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c +index 31180c3..4b988b9 100644 +--- a/arch/mips/mti-malta/malta-init.c ++++ b/arch/mips/mti-malta/malta-init.c +@@ -28,6 +28,7 @@ + #include <asm/io.h> + #include <asm/system.h> + #include <asm/cacheflush.h> ++#include <asm/smp-ops.h> + #include <asm/traps.h> + + #include <asm/gcmpregs.h> +@@ -358,15 +359,14 @@ void __init prom_init(void) + #ifdef CONFIG_SERIAL_8250_CONSOLE + console_config(); + #endif +-#ifdef CONFIG_MIPS_CMP + /* Early detection of CMP support */ + if (gcmp_probe(GCMP_BASE_ADDR, GCMP_ADDRSPACE_SZ)) +- register_smp_ops(&cmp_smp_ops); +- else +-#endif +-#ifdef CONFIG_MIPS_MT_SMP +- register_smp_ops(&vsmp_smp_ops); +-#endif ++ if (!register_cmp_smp_ops()) ++ return; ++ ++ if (!register_vsmp_smp_ops()) ++ return; ++ + #ifdef CONFIG_MIPS_MT_SMTC + register_smp_ops(&msmtc_smp_ops); + #endif +diff --git a/arch/mips/pmc-sierra/msp71xx/msp_setup.c b/arch/mips/pmc-sierra/msp71xx/msp_setup.c +index 2413ea6..0abfbe0 100644 +--- a/arch/mips/pmc-sierra/msp71xx/msp_setup.c ++++ b/arch/mips/pmc-sierra/msp71xx/msp_setup.c +@@ -228,13 +228,11 @@ void __init prom_init(void) + */ + msp_serial_setup(); + +-#ifdef CONFIG_MIPS_MT_SMP +- register_smp_ops(&vsmp_smp_ops); +-#endif +- ++ if (register_vsmp_smp_ops()) { + #ifdef CONFIG_MIPS_MT_SMTC +- register_smp_ops(&msp_smtc_smp_ops); ++ register_smp_ops(&msp_smtc_smp_ops); + #endif ++ } + + #ifdef CONFIG_PMCTWILED + /* +-- +1.7.3.4 + |