1243 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1274 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1301 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1339 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1428 	mutex_lock(&chain->ctrl_mutex);  in uvc_ctrl_status_event()
1452 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_status_event()
1565 	ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1598 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1606 	mutex_lock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1611 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1647 	return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0;  in uvc_ctrl_begin()
1718 	mutex_unlock(&chain->ctrl_mutex);  in __uvc_ctrl_commit()
2049 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_xu_ctrl_query()
2124 	mutex_unlock(&chain->ctrl_mutex);  in uvc_xu_ctrl_query()
2287 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_ctrl_add_mapping()
2329 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_add_mapping()