AHC_DEV_PERIODIC_OTAG
dev->flags &= ~(AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED|AHC_DEV_PERIODIC_OTAG);
dev->flags |= AHC_DEV_PERIODIC_OTAG;
if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)