__snd_hda_add_vmaster
err = __snd_hda_add_vmaster(codec, "Master Playback Switch",
err = __snd_hda_add_vmaster(codec, "Master Playback Switch",
EXPORT_SYMBOL_GPL(__snd_hda_add_vmaster);
int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
__snd_hda_add_vmaster(codec, name, tlv, followers, suffix, true, access, NULL)