Sean Paul 93396d0f9c
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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