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dmaengine: consolidate assignment of DMA cookies

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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>
This commit is contained in:
Russell King - ARM Linux
2012-03-06 22:34:46 +00:00
committed by Vinod Koul
parent d2ebfb335b
commit 884485e1f1
25 changed files with 52 additions and 272 deletions
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9
drivers/dma/ipu/ipu_idmac.c
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@@ -867,14 +867,7 @@ static dma_cookie_t idmac_tx_submit(struct dma_async_tx_descriptor *tx)
dev_dbg(dev, "Submitting sg %p\n", &desc->sg[0]);
cookie = ichan->dma_chan.cookie;
if (++cookie < 0)
cookie = 1;
/* from dmaengine.h: "last cookie value returned to client" */
ichan->dma_chan.cookie = cookie;
tx->cookie = cookie;
cookie = dma_cookie_assign(tx);
/* ipu->lock can be taken under ichan->lock, but not v.v. */
spin_lock_irqsave(&ichan->lock, flags);