diff options
| author | Manoj Chourasia <mchourasia@nvidia.com> | 2012-05-09 16:45:06 +0530 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 01:32:09 -0700 |
| commit | d73858dd587490e87755a2685688013c4e4f36d0 (patch) | |
| tree | 0de09d176545d5e1c30cc8a4da1c4b3080a3e7b5 /drivers/mtd | |
| parent | e29fc8859e64ffcb79f65ed723de97386e61bfd1 (diff) | |
mtd: tegra-nor: Fix dma/cpu coherency issues
Call dma sync single api's to maintain coherency between
CPU, dma and device in data transfers.
bug 984029
bug 980884
Signed-off-by: Manoj Chourasia <mchourasia@nvidia.com>
Reviewed-on: http://git-master/r/105917
(cherry picked from commit ff5d25f4a5847c664a123ca02ad981df699d50b6)
Change-Id: Id77d8239186b70e731f0c93f6e52ce81fb7e43f4
Reviewed-on: http://git-master/r/108507
(cherry picked from commit d739cbdfebec5331ac88e44d99d04ebfc20cef06)
Signed-off-by: Pritesh Raithatha <praithatha@nvidia.com>
Change-Id: Ibe9ec568fdbf34a1039eb61a9e8fba5d85d9829e
Reviewed-on: http://git-master/r/109544
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
Rebase-Id: R695460d8bec75829abab5cc4faf45013ec931886
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/maps/tegra_nor.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/maps/tegra_nor.c b/drivers/mtd/maps/tegra_nor.c index 1cf79cab352c..1556733e3d4c 100644 --- a/drivers/mtd/maps/tegra_nor.c +++ b/drivers/mtd/maps/tegra_nor.c @@ -217,6 +217,8 @@ static void tegra_flash_dma(struct map_info *map, bytes_remaining += (word32_count << 2); break; } + dma_sync_single_for_cpu(c->dev, c->dma_phys_buffer, + (current_transfer << 2), DMA_FROM_DEVICE); memcpy((char *)(copy_to), (char *)(c->dma_virt_buffer), (current_transfer << 2)); |