diff options
| author | Russell King - ARM Linux <linux@arm.linux.org.uk> | 2012-03-06 22:35:47 +0000 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-04-03 09:36:16 -0700 |
| commit | ff27e02b2ca48beb0330473427fa8e0be64c15ab (patch) | |
| tree | 368456e1e5e5001ea132e57a748defbfe9309775 /drivers/dma/dmaengine.h | |
| parent | b1ca7f8af4b3c86635fc523283c2bed9175aea14 (diff) | |
dmaengine: consolidate initialization of cookies
Provide a common function to initialize a channels cookie values.
Change-Id: Idc822d69971d7a6d26ffea8809df4825b87020e5
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
[imx-sdma.c & mxs-dma.c]
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
(cherry picked from mainline commit
d3ee98cdcd6198ea1cf75c603178acc8a805b69b)
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Change-Id: Id7d52f05b78d15b0c61cb04122b19810e78b9269
Reviewed-on: http://git-master/r/93783
Diffstat (limited to 'drivers/dma/dmaengine.h')
| -rw-r--r-- | drivers/dma/dmaengine.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/dma/dmaengine.h b/drivers/dma/dmaengine.h index 1ca5e0e633f4..17f983a4e9ba 100644 --- a/drivers/dma/dmaengine.h +++ b/drivers/dma/dmaengine.h @@ -9,6 +9,16 @@ #include <linux/dmaengine.h> /** + * dma_cookie_init - initialize the cookies for a DMA channel + * @chan: dma channel to initialize + */ +static inline void dma_cookie_init(struct dma_chan *chan) +{ + chan->cookie = DMA_MIN_COOKIE; + chan->completed_cookie = DMA_MIN_COOKIE; +} + +/** * dma_cookie_assign - assign a DMA engine cookie to the descriptor * @tx: descriptor needing cookie * |