From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Fri, 21 Dec 2012 21:44:16 +0000 (+0400)
Subject: mei: fix mismatch in mutex unlock-lock in mei_amthif_read()
X-Git-Tag: v3.8-rc4~27^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6028db0146cf5a68dbd1508225ea49840997880;p=pandora-kernel.git

mei: fix mismatch in mutex unlock-lock in mei_amthif_read()

Users of mei_amthif_read() expect it leaves dev->device_lock held,
while there is a path where mei_amthif_read() unlocks device_lock
and returns -ERESTARTSYS.

The patch move code locking device_lock back before the return.

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

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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