snd_ice1712_delta_cs8403_spdif_write(ice, tmp);
 }
 
-int snd_ice1712_delta1010lt_wordclock_status_info(struct snd_kcontrol *kcontrol,
+static int snd_ice1712_delta1010lt_wordclock_status_info(struct snd_kcontrol *kcontrol,
                          struct snd_ctl_elem_info *uinfo)
 {
        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
        return 0;
 }
 
-int snd_ice1712_delta1010lt_wordclock_status_get(struct snd_kcontrol *kcontrol,
+static int snd_ice1712_delta1010lt_wordclock_status_get(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_value *ucontrol)
 {
        char reg = 0x10; // cs8427 receiver error register