DN_DRIVER_INACTIVE
dnp->dn_flags &= ~(DN_DRIVER_HELD|DN_DRIVER_INACTIVE);
if (dnp->dn_flags & (DN_DRIVER_REMOVED|DN_DRIVER_INACTIVE)) {
DN_DRIVER_INACTIVE : 0)) != 0) {
(DN_DRIVER_REMOVED|DN_DRIVER_INACTIVE)));