From: Dave Airlie <airlied@redhat.com>
Date: Mon, 8 Dec 2014 03:23:37 +0000 (+1000)
Subject: drm/i915: resume MST after reading back hw state
X-Git-Tag: omap-for-v3.20/drop-legacy-3517~77^2~2^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7d6f7d708290da1b7c92f533444b042c79412e0;p=pandora-kernel.git

drm/i915: resume MST after reading back hw state

Otherwise the MST resume paths can hit DPMS paths
which hit state checker paths, which hit WARN_ON,
because the state checker is inconsistent with the
hw.

This fixes a bunch of WARN_ON's on resume after
undocking.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---

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