mixer_get_lock
mixer_lock = mixer_get_lock(m);
mixer_lock = mixer_get_lock(m);
mixer_lock = mixer_get_lock(m);
mixer_lock = mixer_get_lock(m);
mixer_lock = mixer_get_lock(m);
struct mtx *mixer_get_lock(struct snd_mixer *m);
sc->sc_child[i].mixer_lock = mixer_get_lock(m);
struct mtx *mtx = mixer_get_lock(m);
struct mtx *mtx = mixer_get_lock(m);