linux-kernel - [04/55] block, blk-sysfs: Fix an err return path in blk_register

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Message-Id: <20110429185652.960135164@clark.kroah.org>
Date:	Fri, 29 Apr 2011 11:55:27 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Liu Yuan <tailai.ly@...bao.com>,
	Jens Axboe <jaxboe@...ionio.com>
Subject: [04/55] block, blk-sysfs: Fix an err return path in blk_register_queue()

2.6.38-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Liu Yuan <tailai.ly@...bao.com>

commit ed5302d3c25006a9edc7a7fbea97a30483f89ef7 upstream.

We do not call blk_trace_remove_sysfs() in err return path
if kobject_add() fails. This path fixes it.

Signed-off-by: Liu Yuan <tailai.ly@...bao.com>
Signed-off-by: Jens Axboe <jaxboe@...ionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 block/blk-sysfs.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -511,8 +511,10 @@ int blk_register_queue(struct gendisk *d
 		return ret;
 
 	ret = kobject_add(&q->kobj, kobject_get(&dev->kobj), "%s", "queue");
-	if (ret < 0)
+	if (ret < 0) {
+		blk_trace_remove_sysfs(dev);
 		return ret;
+	}
 
 	kobject_uevent(&q->kobj, KOBJ_ADD);
 


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