From: Sean Paul <seanpaul@chromium.org>
Date: Wed, 19 Nov 2014 18:04:49 +0000 (-0500)
Subject: drm/tegra: dc: Select root window for event dispatch
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~356^2~3^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=93396d0f9c027654eb09151d2e22fe78a39feedb;p=pandora-kernel.git

drm/tegra: dc: Select root window for event dispatch

In finish pageflip, the driver was not selecting the root window when
dispatching events. This exposed a race where a plane update would
change the window selection and cause tegra_dc_finish_page_flip to check
the wrong base address.

This patch also protects access to the window selection register as well
as the registers affected by it.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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