From: Ben Widawsky <ben@bwidawsk.net>
Date: Sun, 20 Mar 2011 01:14:26 +0000 (-0700)
Subject: drm/i915: fix ilk rc6 teardown locking
X-Git-Tag: v3.0-rc1~312^2~4^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c34b850ee1e9f86b41706149d0954eee58757a3;p=pandora-kernel.git

drm/i915: fix ilk rc6 teardown locking

In the failure cases during rc6 initialization, both the power context
and render context may get !refcount without holding struct_mutex.
However, on rc6 disabling, the lock is held by the caller.

Rearranged the locking so that it's safe in both cases.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
---

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