MT_UNCONFIG_OP
hdl = mt_config_init(dip, dipp, flags, major, MT_UNCONFIG_OP, brevqp);
case MT_UNCONFIG_OP:
if (hdl->mtc_op == MT_UNCONFIG_OP && hdl->mtc_brevqp &&
(hdl->mtc_op == MT_UNCONFIG_OP) &&