linux-kernel - [PATCH] virtio_blk: fix blk_mq_init

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Message-Id: <1420711540-17425-1-git-send-email-j@bitron.ch>
Date:	Thu,  8 Jan 2015 11:05:40 +0100
From:	Jürg Billeter <j@...ron.ch>
To:	Rusty Russell <rusty@...tcorp.com.au>,
	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org,
	Jürg Billeter <j@...ron.ch>
Subject: [PATCH] virtio_blk: fix blk_mq_init_queue() error handling

blk_mq_init_queue() returns ERR_PTR() on failure, not NULL.

Signed-off-by: Jürg Billeter <j@...ron.ch>
---
 drivers/block/virtio_blk.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 7ef7c09..b1b5c75 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -638,8 +638,8 @@ static int virtblk_probe(struct virtio_device *vdev)
 		goto out_put_disk;
 
 	q = vblk->disk->queue = blk_mq_init_queue(&vblk->tag_set);
-	if (!q) {
-		err = -ENOMEM;
+	if (IS_ERR(q)) {
+		err = PTR_ERR(q);
 		goto out_free_tags;
 	}
 
-- 
2.2.1

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