linux-kernel - [ 34/82] floppy: do put_disk on current dr if blk_init

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Message-Id: <20121114053938.595866708@decadent.org.uk>
Date:	Wed, 14 Nov 2012 05:40:07 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>,
	Jiri Kosina <jkosina@...e.cz>, Jens Axboe <axboe@...nel.dk>
Subject: [ 34/82] floppy: do put_disk on current dr if blk_init_queue fails

3.2-stable review patch.  If anyone has any objections, please let me know.

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

From: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>

commit 238ab78469c6ab7845b43d5061cd3c92331b2452 upstream.

If blk_init_queue fails, we do not call put_disk on the current dr
(dr is decremented first in the error handling loop).

Reviewed-by: Ben Hutchings <ben@...adent.org.uk>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/block/floppy.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 83112f0..9a558b6 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4150,6 +4150,7 @@ static int __init do_floppy_init(void)
 
 		disks[dr]->queue = blk_init_queue(do_fd_request, &floppy_lock);
 		if (!disks[dr]->queue) {
+			put_disk(disks[dr]);
 			err = -ENOMEM;
 			goto out_put_disk;
 		}


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