drm/simpledrm: Do not call drm_atomic_add_affected_planes()

There's no need to add planes to the atomic state. Remove the call
to drm_atomic_add_affected_planes() from simpledrm.

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 simpledrm. 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@suse.de>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20221011165136.469750-3-javierm@redhat.com

diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c
index ecd49a8..f03f17f 100644 (file)
--- a/drivers/gpu/drm/tiny/simpledrm.c
+++ b/drivers/gpu/drm/tiny/simpledrm.c
@@ -549,17 +549,11 @@ static int simpledrm_crtc_helper_atomic_check(struct drm_crtc *crtc,
                                              struct drm_atomic_state *new_state)
 {
        struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(new_state, crtc);
-       int ret;
 
        if (!new_crtc_state->enable)
-               goto out;
-
-       ret = drm_atomic_helper_check_crtc_primary_plane(new_crtc_state);
-       if (ret)
-               return ret;
+               return 0;
 
-out:
-       return drm_atomic_add_affected_planes(new_state, crtc);
+       return drm_atomic_helper_check_crtc_primary_plane(new_crtc_state);
 }
 
 /*