dmaengine: sprd: Fix the incorrect start for 2-stage destination chan…

…nels The 2-stage destination channel will be triggered by source channel automatically, which means we should not trigger it by software request. Signed-off-by: Eric Long <[email protected]> Signed-off-by: Baolin Wang <[email protected]> Signed-off-by: Vinod Koul <[email protected]>
adn770 · May 21, 2019 · 3d626a9 · 3d626a9
1 parent 58152b0
commit 3d626a9
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c
@@ -510,7 +510,9 @@ static void sprd_dma_start(struct sprd_dma_chn *schan)
 	sprd_dma_set_uid(schan);
 	sprd_dma_enable_chn(schan);
 
-	if (schan->dev_id == SPRD_DMA_SOFTWARE_UID)
+	if (schan->dev_id == SPRD_DMA_SOFTWARE_UID &&
+	    schan->chn_mode != SPRD_DMA_DST_CHN0 &&
+	    schan->chn_mode != SPRD_DMA_DST_CHN1)
 		sprd_dma_soft_request(schan);
 }