static int snd_ac97_info_enum_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
static int snd_ac97_get_enum_double(struct snd_kcontrol *kcontrol,
static int snd_ac97_info_enum_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
static int snd_ac97_get_enum_double(struct snd_kcontrol *kcontrol,