Commits
Matt Roper committed 92890583627
drm/plane-helper: Skip prepare_fb/cleanup_fb when newfb==oldfb When commiting a plane update where the framebuffer doesn't change, we can skip the prepare_fb/cleanup_fb steps. This also allows us to avoid an unnecessary vblank wait at the end of the operation when we're just moving a plane and not changing its image (e.g., for a cursor). At the moment, i915 is the only upstream driver using the transitional plane helpers, and thus the only driver affected by this change. Note that this replicates a corresponding change in the atomic helpers implemented in commit ab58e3384b9f9863bfd029b458ff337d381bf6d2 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Mon Nov 24 20:42:42 2014 +0100 drm/atomic-helper: Skip vblank waits for unchanged fbs Reported-by: Jeremiah Mahler <jmmahler@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88540 Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Tested-by: Tested-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>