Index: kernel/generic/src/ipc/ops/concttome.c
===================================================================
--- kernel/generic/src/ipc/ops/concttome.c	(revision b1e6269e0d19f6fc32213d11e1344dccf38f6bf7)
+++ kernel/generic/src/ipc/ops/concttome.c	(revision 9ef1b79b3edc59d798cf9373b2025212317686c1)
@@ -44,6 +44,11 @@
 	int phoneid = phone_alloc(TASK);
 
-	if (phoneid < 0) {  /* Failed to allocate phone */
+	if (phoneid < 0) {
 		IPC_SET_RETVAL(call->data, ELIMIT);
+		/*
+		 * This is a shortcut which bypasses the standard call
+		 * processing hooks. We are still playing it save here as
+		 * there is no state to be cleaned up at this stage.
+		 */
 		ipc_answer(box, call);
 		return -1;