dmaengine: consolidate assignment of DMA cookies

Everyone deals with assigning DMA cookies in the same way (it's part of
the API so they should be), so lets consolidate the common code into a
helper function to avoid this duplication.

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>

1 files changed, 1 insertions, 8 deletions

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 2ebbe572f9e0..04b4347ba4e9 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -414,17 +414,10 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx)
          * assign cookies to all of the software descriptors
          * that make up this transaction
          */
-        cookie = chan->common.cookie;
         list_for_each_entry(child, &desc->tx_list, node) {
-                cookie++;
-                if (cookie < DMA_MIN_COOKIE)
-                        cookie = DMA_MIN_COOKIE;
-
-                child->async_tx.cookie = cookie;
+                cookie = dma_cookie_assign(&child->async_tx);
         }
 
-        chan->common.cookie = cookie;
-
         /* put this transaction onto the tail of the pending queue */
         append_ld_queue(chan, desc);