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, 4 insertions, 4 deletions

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 513184b4fdd1..e510447a685a 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -971,7 +971,7 @@ static enum dma_status pl08x_dma_tx_status(struct dma_chan *chan,
         u32 bytesleft = 0;
 
         last_used = plchan->chan.cookie;
-        last_complete = plchan->lc;
+        last_complete = plchan->chan.completed_cookie;
 
         ret = dma_async_is_complete(cookie, last_complete, last_used);
         if (ret == DMA_SUCCESS) {
@@ -983,7 +983,7 @@ static enum dma_status pl08x_dma_tx_status(struct dma_chan *chan,
          * This cookie not complete yet
          */
         last_used = plchan->chan.cookie;
-        last_complete = plchan->lc;
+        last_complete = plchan->chan.completed_cookie;
 
         /* Get number of bytes left in the active transactions and queue */
         bytesleft = pl08x_getbytes_chan(plchan);
@@ -1543,7 +1543,7 @@ static void pl08x_tasklet(unsigned long data)
 
         if (txd) {
                 /* Update last completed */
-                plchan->lc = txd->tx.cookie;
+                plchan->chan.completed_cookie = txd->tx.cookie;
         }
 
         /* If a new descriptor is queued, set it up plchan->at is NULL here */
@@ -1725,7 +1725,7 @@ static int pl08x_dma_init_virtual_channels(struct pl08x_driver_data *pl08x,
 
                 chan->chan.device = dmadev;
                 chan->chan.cookie = 0;
-                chan->lc = 0;
+                chan->chan.completed_cookie = 0;
 
                 spin_lock_init(&chan->lock);
                 INIT_LIST_HEAD(&chan->pend_list);