From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Fri, 16 May 2014 16:40:22 +0000 (+0300)
Subject: drm/i915: Check for FIFO underruns at the end of modeset on gmch
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~44^2~38^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56b80e1f0022e34f8f92aee867aa8982889cda00;p=pandora-kernel.git

drm/i915: Check for FIFO underruns at the end of modeset on gmch

FIFO underruns don't generate interrupts on gmch platforms, so
if we want to know whether a modeset triggered FIFO underruns we
need to explicitly check for them.

As a modeset on one pipe could cause underruns on other pipes,
check for underruns on all pipes.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Thomas Wood <thomas.wood@intel.com>
[danvet: Fix up merge error, kudos to Ville for noticing it.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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