There's no need to add planes to the atomic state. Remove the call to drm_atomic_add_affected_planes() from mgag200. On full modesets, the DRM helpers already add a CRTC's planes to the atomic state; see drm_atomic_helper_check_modeset(). There's no reason to call drm_atomic_add_affected_planes() unconditionally in the CRTC's atomic_check() in mgag200. It's also too late, as the atomic_check() of the added planes will not be called before the commit. Suggested-by: Thomas Zimmermann <tzimmermann@xxxxxxx> Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx> --- (no changes since v1) drivers/gpu/drm/mgag200/mgag200_mode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 5f7eb642f0c6..758629da95d9 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -601,7 +601,7 @@ int mgag200_crtc_helper_atomic_check(struct drm_crtc *crtc, struct drm_atomic_st } } - return drm_atomic_add_affected_planes(new_state, crtc); + return 0; } void mgag200_crtc_helper_atomic_flush(struct drm_crtc *crtc, struct drm_atomic_state *old_state) -- 2.37.3