linux-kernel - [PATCH -next] dmaengine: sun4i: Use list_move_tail instead of list_del/list_add

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Date:   Mon, 7 Jun 2021 11:20:35 +0800
From:   Zou Wei <zou_wei@...wei.com>
To:     <vkoul@...nel.org>, <mripard@...nel.org>, <wens@...e.org>,
        <jernej.skrabec@...il.com>
CC:     <dmaengine@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-sunxi@...ts.linux.dev>, <linux-kernel@...r.kernel.org>,
        Zou Wei <zou_wei@...wei.com>
Subject: [PATCH -next] dmaengine: sun4i: Use list_move_tail instead of list_del/list_add_tail

Using list_move_tail() instead of list_del() + list_add_tail().

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zou Wei <zou_wei@...wei.com>
---
 drivers/dma/sun4i-dma.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c
index e8b6633..93f1645 100644
--- a/drivers/dma/sun4i-dma.c
+++ b/drivers/dma/sun4i-dma.c
@@ -1042,9 +1042,8 @@ static irqreturn_t sun4i_dma_interrupt(int irq, void *dev_id)
 			 * Move the promise into the completed list now that
 			 * we're done with it
 			 */
-			list_del(&vchan->processing->list);
-			list_add_tail(&vchan->processing->list,
-				      &contract->completed_demands);
+			list_move_tail(&vchan->processing->list,
+				       &contract->completed_demands);
 
 			/*
 			 * Cyclic DMA transfers are special:
-- 
2.6.2