Make structs non-empty.

diff --git a/xen/include/public/io/domain_controller.h b/xen/include/public/io/domain_controller.h
index ddd140ae421b16c7ef13f36c5e313576e8c2c8d3..4df634c9d7ac941c38909e97db0d5080b23afdeb 100644 (file)
--- a/xen/include/public/io/domain_controller.h
+++ b/xen/include/public/io/domain_controller.h
@@ -577,11 +577,12 @@ typedef struct usbif_fe_interface_connect {
 } usbif_fe_interface_connect_t;
 
 /*
- * CMSG_BLKIF_FE_INTERFACE_DISCONNECT:
+ * CMSG_USBIF_FE_INTERFACE_DISCONNECT:
  *  If successful, the domain controller will acknowledge with a
  *  STATUS_DISCONNECTED message.
  */
 typedef struct usbif_fe_interface_disconnect {
+    int dummy; /* make struct non-empty */
 } usbif_fe_interface_disconnect_t;