CAM_DEV_REL_ON_QUEUE_EMPTY
if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY;
if (((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0
dev->flags &= ~CAM_DEV_REL_ON_QUEUE_EMPTY;