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authorRussell King - ARM Linux <linux@arm.linux.org.uk>2012-03-06 22:34:46 +0000
committerVinod Koul <vinod.koul@linux.intel.com>2012-03-13 11:36:52 +0530
commit884485e1f12dcd39390f042e772cdbefc9ebb750 (patch)
treea35fccb601c48ae1ea839aa6d62e4f102f7b66c3 /drivers/dma/pl330.c
parentd2ebfb335b0426deb1a4fb14e4e926d81ecd8235 (diff)
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>
Diffstat (limited to 'drivers/dma/pl330.c')
-rw-r--r--drivers/dma/pl330.c14
1 files changed, 2 insertions, 12 deletions
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 2db70748403..644eb789958 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -429,26 +429,16 @@ static dma_cookie_t pl330_tx_submit(struct dma_async_tx_descriptor *tx)
spin_lock_irqsave(&pch->lock, flags);
/* Assign cookies to all nodes */
- cookie = tx->chan->cookie;
-
while (!list_empty(&last->node)) {
desc = list_entry(last->node.next, struct dma_pl330_desc, node);
- if (++cookie < 0)
- cookie = 1;
- desc->txd.cookie = cookie;
+ dma_cookie_assign(&desc->txd);
list_move_tail(&desc->node, &pch->work_list);
}
- if (++cookie < 0)
- cookie = 1;
- last->txd.cookie = cookie;
-
+ cookie = dma_cookie_assign(&last->txd);
list_add_tail(&last->node, &pch->work_list);
-
- tx->chan->cookie = cookie;
-
spin_unlock_irqrestore(&pch->lock, flags);
return cookie;