From: Andrew Morton <akpm@linux-foundation.org>
Date: Fri, 5 Sep 2008 21:00:24 +0000 (-0700)
Subject: drivers/mmc/card/block.c: fix refcount leak in mmc_block_open()
X-Git-Tag: v2.6.27-rc6~27
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=70bb08962ea9bd50797ae9f16b2493f5f7c65053;p=pandora-kernel.git

drivers/mmc/card/block.c: fix refcount leak in mmc_block_open()

mmc_block_open() increments md->usage although it returns with -EROFS when
default mounting a MMC/SD card with write protect switch on.  This
reference counting bug prevents /dev/mmcblkX from being released on card
removal, and situation worsen with reinsertion until the minor number
range runs out.

Reported-by: <sasin@solomon-systech.com>
Acked-by: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: <stable@kernel.org>		[2.6.25.x, 2.6.26.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

Reading git-diff-tree failed