From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sun, 7 Sep 2014 15:51:12 +0000 (+0100)
Subject: drm/i915: Wrap -EIO send-vblank event for failed pageflip in spinlock
X-Git-Tag: fixes-against-v3.18-rc2~73^2~4^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f0d3dad3ad618dbe4f65453c456c781c4568de29;p=pandora-kernel.git

drm/i915: Wrap -EIO send-vblank event for failed pageflip in spinlock

drm_send_vblank_event() demands that we hold the event spinlock whilst
calling it, so do so.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Fix the double lock as requested by Chris.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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