+#ifdef CONFIG_VNC
+int vnc_display_password(DisplayState *ds, const char *password);
+int vnc_display_pw_expire(DisplayState *ds, time_t expires);
+#else
+static inline int vnc_display_password(DisplayState *ds, const char *password)
+{
+ return -ENODEV;
+}
+static inline int vnc_display_pw_expire(DisplayState *ds, time_t expires)
+{
+ return -ENODEV;
+};
+#endif