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, 2 insertions, 2 deletions

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index b98070c33ca9..9b5cb8a43cfa 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -990,7 +990,7 @@ static enum dma_status fsl_tx_status(struct dma_chan *dchan,
 
         spin_lock_irqsave(&chan->desc_lock, flags);
 
-        last_complete = chan->completed_cookie;
+        last_complete = dchan->completed_cookie;
         last_used = dchan->cookie;
 
         spin_unlock_irqrestore(&chan->desc_lock, flags);
@@ -1088,7 +1088,7 @@ static void dma_do_tasklet(unsigned long data)
                 desc = to_fsl_desc(chan->ld_running.prev);
                 cookie = desc->async_tx.cookie;
 
-                chan->completed_cookie = cookie;
+                chan->common.completed_cookie = cookie;
                 chan_dbg(chan, "completed_cookie=%d\n", cookie);
         }