tree 7604f2eda411a260f1be1522b6051591d2d42943
parent 73c42c79767a03ae64d11457e3ce80e80e09e514
author Sean Paul <seanpaul@chromium.org> 1416420289 -0500
committer Thierry Reding <treding@nvidia.com> 1418822859 +0100

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>