Index: kernel/generic/include/ipc/ipc.h
===================================================================
--- kernel/generic/include/ipc/ipc.h	(revision 90efa3b9570ec6f523c45b1a178410890295d3ec)
+++ kernel/generic/include/ipc/ipc.h	(revision 7d3a4acda12b40c6cc38e9637f5ec72065c14ff9)
@@ -172,4 +172,6 @@
 extern answerbox_t *ipc_box_0;
 
+extern kobject_ops_t call_kobject_ops;
+
 extern void ipc_init(void);