linux-kernel - [PATCH] xen-blkback: Remove needless request

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Message-Id: <20210910022457.22963-1-vulab@iscas.ac.cn>
Date:   Fri, 10 Sep 2021 02:24:57 +0000
From:   Xu Wang <vulab@...as.ac.cn>
To:     konrad.wilk@...cle.com, roger.pau@...rix.com, axboe@...nel.dk,
        xen-devel@...ts.xenproject.org
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] xen-blkback: Remove needless request_queue NULL pointer check

The request_queue pointer returned from bdev_get_queue() shall
never be NULL, so the null check is unnecessary, just remove it.

Signed-off-by: Xu Wang <vulab@...as.ac.cn>
---
 drivers/block/xen-blkback/xenbus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 33eba3df4dd9..f05132b9ddbf 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -516,7 +516,7 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
 		vbd->type |= VDISK_REMOVABLE;
 
 	q = bdev_get_queue(bdev);
-	if (q && test_bit(QUEUE_FLAG_WC, &q->queue_flags))
+	if test_bit(QUEUE_FLAG_WC, &q->queue_flags)
 		vbd->flush_support = true;
 
 	if (q && blk_queue_secure_erase(q))
-- 
2.17.1