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authorRussell King - ARM Linux <linux@arm.linux.org.uk>2012-03-07 02:34:06 +0400
committerVinod Koul <vinod.koul@linux.intel.com>2012-03-13 10:06:06 +0400
commit4d4e58de32a192fea65ab84509d17d199bd291c8 (patch)
treebe35531778c9cc6bee73beb94d07e176a6f3599d /drivers/dma/pch_dma.c
parent08714f60b0fc6ea3a060b69b32e77139f14e6045 (diff)
downloadlinux-4d4e58de32a192fea65ab84509d17d199bd291c8.tar.xz
dmaengine: move last completed cookie into generic dma_chan structure
Every DMA engine implementation declares a last completed dma cookie in their private dma channel structures. This is pointless, and forces driver specific code. Move this out into the common dma_chan structure. 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/pch_dma.c')
-rw-r--r--drivers/dma/pch_dma.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index 823f58179f9d..79a71858497c 100644
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -105,7 +105,6 @@ struct pch_dma_chan {
spinlock_t lock;
- dma_cookie_t completed_cookie;
struct list_head active_list;
struct list_head queue;
struct list_head free_list;
@@ -544,7 +543,7 @@ static int pd_alloc_chan_resources(struct dma_chan *chan)
spin_lock_irq(&pd_chan->lock);
list_splice(&tmp_list, &pd_chan->free_list);
pd_chan->descs_allocated = i;
- pd_chan->completed_cookie = chan->cookie = 1;
+ chan->completed_cookie = chan->cookie = 1;
spin_unlock_irq(&pd_chan->lock);
pdc_enable_irq(chan, 1);
@@ -583,7 +582,7 @@ static enum dma_status pd_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
int ret;
spin_lock_irq(&pd_chan->lock);
- last_completed = pd_chan->completed_cookie;
+ last_completed = chan->completed_cookie;
last_used = chan->cookie;
spin_unlock_irq(&pd_chan->lock);