gpu/drm/drm_atomic.c

358 	ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
544 	ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx);
760  * of locking, hence drivers should not have a need to call drm_modeset_lock()
850 	ret = drm_modeset_lock(&obj->lock, state->acquire_ctx);
1082 	ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
1303 	ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
1581 	ret = drm_modeset_lock(&dev->mode_config.connection_mutex,
1784 			drm_modeset_lock(&plane->mutex, NULL);
1792 			drm_modeset_lock(&crtc->mutex, NULL);
1800 		drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
1809 			drm_modeset_lock(&obj->lock, NULL);