diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h
index 75e543b78f53..1088149be0c9 100644
--- a/include/linux/mfd/syscon.h
+++ b/include/linux/mfd/syscon.h
@@ -29,24 +29,24 @@ extern struct regmap *syscon_regmap_lookup_by_phandle(
 #else
 static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
 {
-	return ERR_PTR(-ENOSYS);
+	return ERR_PTR(-ENOTSUPP);
 }
 
 static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
 {
-	return ERR_PTR(-ENOSYS);
+	return ERR_PTR(-ENOTSUPP);
 }
 
 static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s)
 {
-	return ERR_PTR(-ENOSYS);
+	return ERR_PTR(-ENOTSUPP);
 }
 
 static inline struct regmap *syscon_regmap_lookup_by_phandle(
 					struct device_node *np,
 					const char *property)
 {
-	return ERR_PTR(-ENOSYS);
+	return ERR_PTR(-ENOTSUPP);
 }
 #endif