linux-kernel - [PATCH] dma:xgene-dma:move spin_lock_bh to spin

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Message-Id: <1553013919-29504-1-git-send-email-chongguiguzi@gmail.com>
Date:   Wed, 20 Mar 2019 00:45:19 +0800
From:   Jeff Xie <chongguiguzi@...il.com>
To:     dan.j.williams@...el.com, vkoul@...nel.org
Cc:     dmaengine@...r.kernel.org, chongguiguzi@...il.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH] dma:xgene-dma:move spin_lock_bh to spin_lock in tasklet

It is unnecessary to call spin_lock_bh in a tasklet.

Signed-off-by: Jeff Xie <chongguiguzi@...il.com>
---
 drivers/dma/xgene-dma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/xgene-dma.c b/drivers/dma/xgene-dma.c
index eafd6c4..0023236 100644
--- a/drivers/dma/xgene-dma.c
+++ b/drivers/dma/xgene-dma.c
@@ -703,7 +703,7 @@ static void xgene_dma_cleanup_descriptors(struct xgene_dma_chan *chan)
 
 	INIT_LIST_HEAD(&ld_completed);
 
-	spin_lock_bh(&chan->lock);
+	spin_lock(&chan->lock);
 
 	/* Clean already completed and acked descriptors */
 	xgene_dma_clean_completed_descriptor(chan);
@@ -772,7 +772,7 @@ static void xgene_dma_cleanup_descriptors(struct xgene_dma_chan *chan)
 	 */
 	xgene_chan_xfer_ld_pending(chan);
 
-	spin_unlock_bh(&chan->lock);
+	spin_unlock(&chan->lock);
 
 	/* Run the callback for each descriptor, in order */
 	list_for_each_entry_safe(desc_sw, _desc_sw, &ld_completed, node) {
-- 
2.7.4