txx9dmac: return DMA_SUCCESS immediately from device_tx_status()
There is no point to go throught the rest of the function if first call to
dma_cookie_status() returned DMA_SUCCESS.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c
index a59fb48..59357db 100644
--- a/drivers/dma/txx9dmac.c
+++ b/drivers/dma/txx9dmac.c
@@ -962,15 +962,14 @@
enum dma_status ret;
ret = dma_cookie_status(chan, cookie, txstate);
- if (ret != DMA_SUCCESS) {
- spin_lock_bh(&dc->lock);
- txx9dmac_scan_descriptors(dc);
- spin_unlock_bh(&dc->lock);
+ if (ret == DMA_SUCCESS)
+ return DMA_SUCCESS;
- ret = dma_cookie_status(chan, cookie, txstate);
- }
+ spin_lock_bh(&dc->lock);
+ txx9dmac_scan_descriptors(dc);
+ spin_unlock_bh(&dc->lock);
- return ret;
+ return dma_cookie_status(chan, cookie, txstate);
}
static void txx9dmac_chain_dynamic(struct txx9dmac_chan *dc,