DF_EXTERNALSOFTC
if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC))
dev->flags |= DF_EXTERNALSOFTC;
dev->flags &= ~DF_EXTERNALSOFTC;
if (dev->softc && !(dev->flags & DF_EXTERNALSOFTC)) {
if (!(dev->flags & DF_EXTERNALSOFTC))