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