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>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index ad7d03fe4cb4..c6a84dac112c 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -435,7 +435,7 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
         }
 
         if (cookie > 0)
-                mv_chan->completed_cookie = cookie;
+                mv_chan->common.completed_cookie = cookie;
 }
 
 static void
@@ -825,7 +825,7 @@ static enum dma_status mv_xor_status(struct dma_chan *chan,
         enum dma_status ret;
 
         last_used = chan->cookie;
-        last_complete = mv_chan->completed_cookie;
+        last_complete = chan->completed_cookie;
         dma_set_tx_state(txstate, last_complete, last_used, 0);
 
         ret = dma_async_is_complete(cookie, last_complete, last_used);
@@ -836,7 +836,7 @@ static enum dma_status mv_xor_status(struct dma_chan *chan,
         mv_xor_slot_cleanup(mv_chan);
 
         last_used = chan->cookie;
-        last_complete = mv_chan->completed_cookie;
+        last_complete = chan->completed_cookie;
 
         dma_set_tx_state(txstate, last_complete, last_used, 0);
         return dma_async_is_complete(cookie, last_complete, last_used);