diff options
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.patch | 40 |
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; + } + |