emu_intr_unregister
emu_intr_unregister(scp->card, scp->ihandle);
emu_intr_unregister(scp->card, scp->ihandle);
(void)emu_intr_unregister(sc->card, ch->ihandle);
(void)emu_intr_unregister(sc->card, ch->ihandle);
int emu_intr_unregister(struct emu_sc_info *sc, int ihandle);