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Diffstat (limited to 'target/linux/mvebu/patches-3.10/0129-mtd-nand-pxa3xx-Move-DMA-I-O-enabling.patch')
-rw-r--r--target/linux/mvebu/patches-3.10/0129-mtd-nand-pxa3xx-Move-DMA-I-O-enabling.patch40
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-3.10/0129-mtd-nand-pxa3xx-Move-DMA-I-O-enabling.patch b/target/linux/mvebu/patches-3.10/0129-mtd-nand-pxa3xx-Move-DMA-I-O-enabling.patch
new file mode 100644
index 0000000000..0c95a61b97
--- /dev/null
+++ b/target/linux/mvebu/patches-3.10/0129-mtd-nand-pxa3xx-Move-DMA-I-O-enabling.patch
@@ -0,0 +1,40 @@
+From 18166290599760e8ff1b6c0389834beafd09a517 Mon Sep 17 00:00:00 2001
+From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
+Date: Fri, 4 Oct 2013 15:30:37 -0300
+Subject: [PATCH 129/203] mtd: nand: pxa3xx: Move DMA I/O enabling
+
+Instead of setting info->dma each time a command is prepared,
+we can move it after the DMA buffers are allocated.
+
+This is more clear and it's the proper place to enable this, given
+DMA cannot be turned on and off during runtime.
+
+Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
+Tested-by: Daniel Mack <zonque@gmail.com>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/nand/pxa3xx_nand.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/drivers/mtd/nand/pxa3xx_nand.c
++++ b/drivers/mtd/nand/pxa3xx_nand.c
+@@ -540,7 +540,6 @@ static int prepare_command_pool(struct p
+ info->oob_size = 0;
+ info->use_ecc = 0;
+ info->use_spare = 1;
+- info->use_dma = (use_dma) ? 1 : 0;
+ info->is_ready = 0;
+ info->retcode = ERR_NONE;
+ if (info->cs != 0)
+@@ -950,6 +949,11 @@ static int pxa3xx_nand_init_buff(struct
+ return info->data_dma_ch;
+ }
+
++ /*
++ * Now that DMA buffers are allocated we turn on
++ * DMA proper for I/O operations.
++ */
++ info->use_dma = 1;
+ return 0;
+ }
+