Index: kernel/generic/include/ipc/irq.h
===================================================================
--- kernel/generic/include/ipc/irq.h	(revision 58a6d9978211abcec4de25c74bb5b77f680f2f32)
+++ kernel/generic/include/ipc/irq.h	(revision 4874c2dc3da3748951cb71f24805c35b88106d0f)
@@ -79,4 +79,5 @@
  */
 struct ipc_notif_cfg {
+	bool notify;			/**< When false, notifications are not sent. */
 	answerbox_t *answerbox;		/**< Answerbox for notifications. */
 	unative_t method;		/**< Method to be used for the notification. */