USB: cdc-acm: don't unlock acm->mutex on error path
authorAlexey Dobriyan <adobriyan@gmail.com>
Wed, 20 Aug 2008 23:56:04 +0000 (16:56 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Thu, 21 Aug 2008 17:26:35 +0000 (10:26 -0700)
commit74573ee7096a4ffc2f098108d21c85801b9c7434
treed7d4e43b620a5d4a0bda7b077774057922941e8c
parentfb85d991616046f1b640ed9c4eab9b44908dab74
USB: cdc-acm: don't unlock acm->mutex on error path

On Wed, Jul 23, 2008 at 03:52:36PM +0300, Andrei Popa wrote:
> I installed gnokii-0.6.22-r2 and gave the command "gnokii --identify"
> and the kernel oopsed:
>
> BUG: unable to handle kernel NULL pointer dereference at 00000458
> IP: [<c0444b52>] mutex_unlock+0x0/0xb
>  [<c03830ae>] acm_tty_open+0x4c/0x214

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Tested-by: Andrei Popa <andrei.popa@i-neo.ro>
Cc: stable <stable@kernel.org> [2.6.25.x, 2.6.26.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/class/cdc-acm.c