From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 24 Apr 2012 20:48:47 +0000 (+0100)
Subject: drm/i915: Use a global lock for modifying global irq flags
X-Git-Tag: v3.5-rc1~83^2~8^2~73
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7338aefa5cad08eb6794aa8e9a5853dedb990aa0;p=pandora-kernel.git

drm/i915: Use a global lock for modifying global irq flags

We were attempting to use a per-ring spinlock whilst modifying global
IRQ flags. A recipe for rare missed interrupts.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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