adb_intr
adb_intr, sc, sc->sc_dev.dv_xname);
int adb_intr(void *arg);
extern int adb_intr(void *);
adb_intr(NULL); /* adb does not use the argument */
extern int adb_intr (void *);
rv = adb_intr(adb_cd.cd_devs[0]);