From: Christian König <deathsimple@vodafone.de>
Date: Wed, 9 May 2012 13:34:48 +0000 (+0200)
Subject: drm/radeon: rework locking ring emission mutex in fence deadlock detection v2
X-Git-Tag: v3.5-rc1~83^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a47cc9ec1249eefd600adb273148c62879a560d;p=pandora-kernel.git

drm/radeon: rework locking ring emission mutex in fence deadlock detection v2

Some callers illegal called fence_wait_next/empty
while holding the ring emission mutex. So don't
relock the mutex in that cases, and move the actual
locking into the fence code.

v2: Don't try to unlock the mutex if it isn't locked.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

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