drm/i915: Ignore bogus plane coordinates on SKL when the plane is not visible
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Mon, 7 Nov 2016 20:20:54 +0000 (22:20 +0200)
committerMatt Roper <matthew.d.roper@intel.com>
Tue, 17 Jan 2017 22:16:13 +0000 (14:16 -0800)
commita5e4c7d0aa6784d8abe95c3ceef0da9656d17468
treef427940480dc1233e0819d59c72a4304a5e2348a
parentb368f53378a4dc193239b5b8ffe8789bbb8b90a8
drm/i915: Ignore bogus plane coordinates on SKL when the plane is not visible

When the plane is invisible we may have all sorts of bogus stuff
in the coordinates, which we must ignore or else we might fail the
plane update. This started to happen on SKL when I moved the plane
offset computation to happen in the check phase. Previously we
happily ignored it all since we never called the update_plane hook
with an invisible plane.

Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Fixes: b63a16f6cd89 ("drm/i915: Compute display surface offset in the plane check hook for SKL+")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98258
Testcase: igt/pm_rpm/legacy-planes
Testcase: igt/pm_rpm/universal-planes
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1478550057-24864-3-git-send-email-ville.syrjala@linux.intel.com
drivers/gpu/drm/i915/intel_display.c