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>
diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index 5218e48..c30f63e 100644
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -565,19 +565,12 @@
struct dma_tx_state *txstate)
{
struct pch_dma_chan *pd_chan = to_pd_chan(chan);
- dma_cookie_t last_used;
- dma_cookie_t last_completed;
- int ret;
+ enum dma_status ret;
spin_lock_irq(&pd_chan->lock);
- last_completed = chan->completed_cookie;
- last_used = chan->cookie;
+ ret = dma_cookie_status(chan, cookie, txstate);
spin_unlock_irq(&pd_chan->lock);
- ret = dma_async_is_complete(cookie, last_completed, last_used);
-
- dma_set_tx_state(txstate, last_completed, last_used, 0);
-
return ret;
}