diff --git a/sound/soc/codecs/adau17x1.c b/sound/soc/codecs/adau17x1.c
index c0bc429249fa..3959e6ad113d 100644
--- a/sound/soc/codecs/adau17x1.c
+++ b/sound/soc/codecs/adau17x1.c
@@ -67,6 +67,9 @@ static const struct snd_kcontrol_new adau17x1_controls[] = {
 	SOC_ENUM("Mic Bias Mode", adau17x1_mic_bias_mode_enum),
 };
 
+static int adau17x1_setup_firmware(struct snd_soc_component *component,
+	unsigned int rate);
+
 static int adau17x1_pll_event(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *kcontrol, int event)
 {
@@ -320,7 +323,7 @@ static const struct snd_soc_dapm_route adau17x1_no_dsp_dapm_routes[] = {
 	{ "Capture", NULL, "Right Decimator" },
 };
 
-bool adau17x1_has_dsp(struct adau *adau)
+static bool adau17x1_has_dsp(struct adau *adau)
 {
 	switch (adau->type) {
 	case ADAU1761:
@@ -331,7 +334,6 @@ bool adau17x1_has_dsp(struct adau *adau)
 		return false;
 	}
 }
-EXPORT_SYMBOL_GPL(adau17x1_has_dsp);
 
 static bool adau17x1_has_safeload(struct adau *adau)
 {
@@ -854,7 +856,7 @@ bool adau17x1_volatile_register(struct device *dev, unsigned int reg)
 }
 EXPORT_SYMBOL_GPL(adau17x1_volatile_register);
 
-int adau17x1_setup_firmware(struct snd_soc_component *component,
+static int adau17x1_setup_firmware(struct snd_soc_component *component,
 	unsigned int rate)
 {
 	int ret;
@@ -898,7 +900,6 @@ err:
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(adau17x1_setup_firmware);
 
 int adau17x1_add_widgets(struct snd_soc_component *component)
 {
diff --git a/sound/soc/codecs/adau17x1.h b/sound/soc/codecs/adau17x1.h
index e6fe87beec07..98a3b6f5bc96 100644
--- a/sound/soc/codecs/adau17x1.h
+++ b/sound/soc/codecs/adau17x1.h
@@ -68,10 +68,6 @@ int adau17x1_resume(struct snd_soc_component *component);
 
 extern const struct snd_soc_dai_ops adau17x1_dai_ops;
 
-int adau17x1_setup_firmware(struct snd_soc_component *component,
-	unsigned int rate);
-bool adau17x1_has_dsp(struct adau *adau);
-
 #define ADAU17X1_CLOCK_CONTROL			0x4000
 #define ADAU17X1_PLL_CONTROL			0x4002
 #define ADAU17X1_REC_POWER_MGMT			0x4009