From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 23 May 2012 10:13:58 +0000 (+0100)
Subject: drm/i915: Make the lock for pageflips interruptible
X-Git-Tag: v3.6-rc1~83^2^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=79158103bf20c9ff55204ceb78a5773f422b03be;p=pandora-kernel.git

drm/i915: Make the lock for pageflips interruptible

As we take the struct_mutex lock to access the command-stream, there is
a possibility that we may need to wait for a GPU hang and so should make
the lock both interruptible and error-checking.

References: https://bugs.freedesktop.org/show_bug.cgi?id=50069
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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