backend/drm: add special case for cursor in add_plane
The code calling add_plane now makes sure not to add a cursor plane to a
CRTC which already has one.
@@ -92,10 +92,7 @@ static bool add_plane(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, drmModePlane *drm_plane,
uint32_t type, union wlr_drm_plane_props *props) {
assert(!(type == DRM_PLANE_TYPE_PRIMARY && crtc->primary));
-
- if (type == DRM_PLANE_TYPE_CURSOR && crtc->cursor) {
- return true;
- }
+ assert(!(type == DRM_PLANE_TYPE_CURSOR && crtc->cursor));
struct wlr_drm_plane *p = calloc(1, sizeof(*p));
if (!p) {
