ehci_release_ownership
ehci_release_ownership(&sc->sc, sc->sc_pc, sc->sc_tag);
ehci_release_ownership(&sc->sc, sc->sc_pc, sc->sc_tag);
ehci_release_ownership(&sc->sc, sc->sc_pc, sc->sc_tag);
static void ehci_release_ownership(ehci_softc_t *, pci_chipset_tag_t, pcitag_t);