diff --git a/sound/soc/atmel/atmel-classd.c b/sound/soc/atmel/atmel-classd.c
index b1a28a9382fb..6023369e0f1a 100644
--- a/sound/soc/atmel/atmel-classd.c
+++ b/sound/soc/atmel/atmel-classd.c
@@ -48,7 +48,7 @@ static struct atmel_classd_pdata *atmel_classd_dt_init(struct device *dev)
 {
 	struct device_node *np = dev->of_node;
 	struct atmel_classd_pdata *pdata;
-	const char *pwm_type;
+	const char *pwm_type_s;
 	int ret;
 
 	if (!np) {
@@ -60,8 +60,8 @@ static struct atmel_classd_pdata *atmel_classd_dt_init(struct device *dev)
 	if (!pdata)
 		return ERR_PTR(-ENOMEM);
 
-	ret = of_property_read_string(np, "atmel,pwm-type", &pwm_type);
-	if ((ret == 0) && (strcmp(pwm_type, "diff") == 0))
+	ret = of_property_read_string(np, "atmel,pwm-type", &pwm_type_s);
+	if ((ret == 0) && (strcmp(pwm_type_s, "diff") == 0))
 		pdata->pwm_type = CLASSD_MR_PWMTYP_DIFF;
 	else
 		pdata->pwm_type = CLASSD_MR_PWMTYP_SINGLE;