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>
diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index 823f581..79a7185 100644
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -105,7 +105,6 @@
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 @@
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 @@
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);