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/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
index cee79f6e..c9ab4ac 100644
--- a/drivers/dma/intel_mid_dma.c
+++ b/drivers/dma/intel_mid_dma.c
@@ -477,30 +477,17 @@
dma_cookie_t cookie,
struct dma_tx_state *txstate)
{
- dma_cookie_t last_used;
- dma_cookie_t last_complete;
- int ret;
+ enum dma_status ret;
- last_complete = chan->completed_cookie;
- last_used = chan->cookie;
-
- ret = dma_async_is_complete(cookie, last_complete, last_used);
+ ret = dma_cookie_status(chan, cookie, txstate);
if (ret != DMA_SUCCESS) {
spin_lock_bh(&midc->lock);
midc_scan_descriptors(to_middma_device(chan->device), midc);
spin_unlock_bh(&midc->lock);
- last_complete = chan->completed_cookie;
- last_used = chan->cookie;
-
- ret = dma_async_is_complete(cookie, last_complete, last_used);
+ ret = dma_cookie_status(chan, cookie, txstate);
}
- if (txstate) {
- txstate->last = last_complete;
- txstate->used = last_used;
- txstate->residue = 0;
- }
return ret;
}