snd_ac97_find_mixer_ctl 3409 sound/pci/ac97/ac97_patch.c sctl = snd_ac97_find_mixer_ctl(ac97, *s); snd_ac97_find_mixer_ctl 3433 sound/pci/ac97/ac97_patch.c kctl = snd_ac97_find_mixer_ctl(ac97, "Master Playback Volume");