[PATCH] dmaengine: virt-dma: fix completion list manipulation

[Robert Jarzmik]

When a transfer is completed, the descriptor is moved from issued list
to completed list. Fix the list manipulation, from list_add to
list_move_tail.

The bug was seen with a multiple descriptors issued and completed lists,
where the issued list chaining was corrupted.

Signed-off-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
---
 drivers/dma/virt-dma.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/virt-dma.h b/drivers/dma/virt-dma.h
index 3772032..2a3da22 100644
--- a/drivers/dma/virt-dma.h
+++ b/drivers/dma/virt-dma.h
@@ -91,7 +91,7 @@ static inline void vchan_cookie_complete(struct virt_dma_desc *vd)
 	dma_cookie_complete(&vd->tx);
 	dev_vdbg(vc->chan.device->dev, "txd %p[%x]: marked complete\n",
 		 vd, cookie);
-	list_add_tail(&vd->node, &vc->desc_completed);
+	list_move_tail(&vd->node, &vc->desc_completed);
 
 	tasklet_schedule(&vc->task);
 }
-- 
2.1.0

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