This is the same series as v1, but with a new patch appended. I've tried coming up with a wording that isn't too confusing, while still accepting configurations like amdgpu's.

Each patch changes the docs and the drm_mode_config_validate at the same time, so that we can easily revert a patch if needed.

Simon Ser (4): drm: rework description of primary and cursor planes drm: validate possible_crtcs for primary and cursor planes drm: require a non_NULL drm_crtc.primary drm: require each CRTC to have a unique primary plane

drivers/gpu/drm/drm_crtc.c | 3 +++ drivers/gpu/drm/drm_mode_config.c | 40 +++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_plane.c | 22 +++++++++++------ 3 files changed, 58 insertions(+), 7 deletions(-)