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/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
index 55d0451670b0..e9217c390b76 100644
--- a/drivers/dma/intel_mid_dma.c
+++ b/drivers/dma/intel_mid_dma.c
@@ -436,14 +436,7 @@ static dma_cookie_t intel_mid_dma_tx_submit(struct dma_async_tx_descriptor *tx)
         dma_cookie_t            cookie;
 
         spin_lock_bh(&midc->lock);
-        cookie = midc->chan.cookie;
-
-        if (++cookie < 0)
-                cookie = 1;
-
-        midc->chan.cookie = cookie;
-        desc->txd.cookie = cookie;
-
+        cookie = dma_cookie_assign(tx);
 
         if (list_empty(&midc->active_list))
                 list_add_tail(&desc->desc_node, &midc->active_list);