dmaengine: consolidate tx_status functions

Now that we have the completed cookie in the dma_chan structure, we
can consolidate the tx_status functions by providing a function to set
the txstate structure and returning the DMA status.  We also provide
a separate helper to set the residue for cookies which are still in
progress.

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, 1 insertions, 12 deletions

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index a81d0a5f8191..d43019fc3496 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -395,18 +395,7 @@ static enum dma_status
 pl330_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
                  struct dma_tx_state *txstate)
 {
-        struct dma_pl330_chan *pch = to_pchan(chan);
-        dma_cookie_t last_done, last_used;
-        int ret;
-
-        last_done = chan->completed_cookie;
-        last_used = chan->cookie;
-
-        ret = dma_async_is_complete(cookie, last_done, last_used);
-
-        dma_set_tx_state(txstate, last_done, last_used, 0);
-
-        return ret;
+        return dma_cookie_status(chan, cookie, txstate);
 }
 
 static void pl330_issue_pending(struct dma_chan *chan)