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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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15
drivers/dma/imx-dma.c
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@@ -165,19 +165,6 @@ static enum dma_status imxdma_tx_status(struct dma_chan *chan,
return ret;
}
static dma_cookie_t imxdma_assign_cookie(struct imxdma_channel *imxdma)
{
dma_cookie_t cookie = imxdma->chan.cookie;
if (++cookie < 0)
cookie = 1;
imxdma->chan.cookie = cookie;
imxdma->desc.cookie = cookie;
return cookie;
}
static dma_cookie_t imxdma_tx_submit(struct dma_async_tx_descriptor *tx)
{
struct imxdma_channel *imxdmac = to_imxdma_chan(tx->chan);
@@ -185,7 +172,7 @@ static dma_cookie_t imxdma_tx_submit(struct dma_async_tx_descriptor *tx)
spin_lock_irq(&imxdmac->lock);
cookie = imxdma_assign_cookie(imxdmac);
cookie = dma_cookie_assign(tx);
spin_unlock_irq(&imxdmac->lock);