049b77cb2a
While sifting through the inteldrmfb code trying to solve #22040 I found that the fb restore path doesn't check the return value of drm_crtc_helper_set_config(), which seems to have all sorts of potential failure modes. We should warn someone if one of these is triggered. Signed-Off-By: Ben Gamari <bgamari.foss@gmail.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> [anholt: hand-applied, failures are mine] Signed-off-by: Eric Anholt <eric@anholt.net>