diff --git a/include/linux/enclosure.h b/include/linux/enclosure.h
index a835d33..807622b 100644
--- a/include/linux/enclosure.h
+++ b/include/linux/enclosure.h
@@ -79,6 +79,7 @@
 	int (*set_locate)(struct enclosure_device *,
 			  struct enclosure_component *,
 			  enum enclosure_component_setting);
+	int (*show_id)(struct enclosure_device *, char *buf);
 };