tree b2eac067e893ad8ba588ae3e9a2625c8a7dec85f
parent d1c3ed669a2d452cacfb48c2d171a1f364dae2ed
author Alexey Khoroshilov <khoroshilov@ispras.ru> 1356126256 +0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1357583283 -0800

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>