-int ccw_device_register(struct ccw_device *);
-void ccw_device_do_unreg_rereg(void *);
-void ccw_device_call_sch_unregister(void *);
+void ccw_device_do_unreg_rereg(struct work_struct *);
+void ccw_device_call_sch_unregister(struct work_struct *);
+void ccw_device_move_to_orphanage(struct work_struct *);
+int ccw_device_is_orphan(struct ccw_device *);