ucom_open 401 dev/usb/ucom.c if (sc->sc_methods->ucom_open != NULL) { ucom_open 402 dev/usb/ucom.c error = sc->sc_methods->ucom_open(sc->sc_parent, ucom_open 58 dev/usb/ucomvar.h int (*ucom_open)(void *sc, int portno);