diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index c60745f657e9c..40657f220f8b8 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -765,7 +765,7 @@ static inline bool is_acpi_device_node(const struct fwnode_handle *fwnode)
 	return false;
 }
 
-static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
+static inline struct acpi_device *to_acpi_device_node(const struct fwnode_handle *fwnode)
 {
 	return NULL;
 }
@@ -775,12 +775,12 @@ static inline bool is_acpi_data_node(const struct fwnode_handle *fwnode)
 	return false;
 }
 
-static inline struct acpi_data_node *to_acpi_data_node(struct fwnode_handle *fwnode)
+static inline struct acpi_data_node *to_acpi_data_node(const struct fwnode_handle *fwnode)
 {
 	return NULL;
 }
 
-static inline bool acpi_data_node_match(struct fwnode_handle *fwnode,
+static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
 					const char *name)
 {
 	return false;