CD_NOTREQUIRED
cx->physical->cfg.cd.necessity = CD_NOTREQUIRED;
case CD_NOTREQUIRED:
{ CD_NOTREQUIRED, 0 },
if (cd->necessity == CD_NOTREQUIRED)
{ CD_NOTREQUIRED, 0 },
if (dev->dev.cd.necessity == CD_NOTREQUIRED || physical_IsSync(p))
{ CD_NOTREQUIRED, 0 },