From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Sat, 3 Jan 2015 23:31:20 +0000 (+0300)
Subject: drm/radeon: do not leave queue acquired if timeout happens in kgd_hqd_destroy()
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~306^2^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4c18442e536ec24cc5ca23c5bbaa80bd53020b95;p=pandora-kernel.git

drm/radeon: do not leave queue acquired if timeout happens in kgd_hqd_destroy()

If timeout happens, kgd_hqd_destroy() just returns -ETIME leaving queue
acquired.
It may cause a deadlock, so the patch proposes to release queue before return.

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

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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