diff --git a/sound/soc/atmel/tse850-pcm5142.c b/sound/soc/atmel/tse850-pcm5142.c
index 214adcad5419..ae445184614a 100644
--- a/sound/soc/atmel/tse850-pcm5142.c
+++ b/sound/soc/atmel/tse850-pcm5142.c
@@ -117,8 +117,8 @@ static int tse850_put_mux2(struct snd_kcontrol *kctrl,
 	return snd_soc_dapm_put_enum_double(kctrl, ucontrol);
 }
 
-int tse850_get_mix(struct snd_kcontrol *kctrl,
-		   struct snd_ctl_elem_value *ucontrol)
+static int tse850_get_mix(struct snd_kcontrol *kctrl,
+			  struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
 	struct snd_soc_card *card = dapm->card;
@@ -129,8 +129,8 @@ int tse850_get_mix(struct snd_kcontrol *kctrl,
 	return 0;
 }
 
-int tse850_put_mix(struct snd_kcontrol *kctrl,
-		   struct snd_ctl_elem_value *ucontrol)
+static int tse850_put_mix(struct snd_kcontrol *kctrl,
+			  struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
 	struct snd_soc_card *card = dapm->card;
@@ -151,8 +151,8 @@ int tse850_put_mix(struct snd_kcontrol *kctrl,
 	return 1;
 }
 
-int tse850_get_ana(struct snd_kcontrol *kctrl,
-		   struct snd_ctl_elem_value *ucontrol)
+static int tse850_get_ana(struct snd_kcontrol *kctrl,
+			  struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
 	struct snd_soc_card *card = dapm->card;
@@ -184,8 +184,8 @@ int tse850_get_ana(struct snd_kcontrol *kctrl,
 	return 0;
 }
 
-int tse850_put_ana(struct snd_kcontrol *kctrl,
-		   struct snd_ctl_elem_value *ucontrol)
+static int tse850_put_ana(struct snd_kcontrol *kctrl,
+			  struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
 	struct snd_soc_card *card = dapm->card;