Merged
requested to merge daenzer/xf86-video-amdgpu:amdgpu_present_check_flip-pitch-non-DC into master
We need to check the pitch again even with upcoming xserver releases, but only with older kernel drivers.
Flipping to a buffer with different pitch can happen e.g. when there's a window which is wider than the root window, and fully covers it.
Patch 3 takes advantage of https://patchwork.freedesktop.org/patch/320425/.
/cc @kazlaus