audio_mixers_init
error = audio_mixers_init(sc, mode, &phwfmt, &rhwfmt, &pfil, &rfil);
static int audio_mixers_init(struct audio_softc *sc, int,
error = audio_mixers_init(sc, mode, &phwfmt, &rhwfmt, &pfil, &rfil);
error = audio_mixers_init(sc, mode, &phwfmt, &rhwfmt, &pfil, &rfil);
audio_mixers_init(sc, mode, &phwfmt, &rhwfmt, &pfil, &rfil);