From: Rob Clark <robdclark@gmail.com>
Date: Tue, 25 Nov 2014 17:41:18 +0000 (-0500)
Subject: drm/msm: block incoming update on pending updates
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~356^2~6^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f86afecf0defbc8d046bc7a7c5fc19a8c9ba1364;p=pandora-kernel.git

drm/msm: block incoming update on pending updates

We can't have multiple updates pending on a given CRTC, and we don't
want a sync update to race w/ an async update that preceeded it.  So
keep track of which CRTCs have updates in flight, and block later
updates that would conflict.

Signed-off-by: Rob Clark <robdclark@gmail.com>
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