From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Tue, 6 Mar 2012 20:08:29 +0000 (-0300)
Subject: [media] dib9000: implement error handling for DibAcquireLock
X-Git-Tag: v3.4-rc1~110^2^2~69
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f3033aecf2341a4e2669c63ed78a190a1c3e7a3a;p=pandora-kernel.git

[media] dib9000: implement error handling for DibAcquireLock

DibAcquireLock() is implemented as mutex_lock_interruptible()
but the driver does not handle unsuccessful locking.
As a result it may lead to unlock of an unheld mutex.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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