tree 301692bce950f064633b80a93cbb808bead41351
parent 22f30168d296dbb54a21ebad44c9d735bca6f67b
author Andrew Morton <akpm@linux-foundation.org> 1220648424 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1220650778 -0700

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>