- daemonize is defined in linux/sched.h
--- mISDN-1_1_9_2.orig/drivers/isdn/hardware/mISDN/core.h	2009-01-22 14:36:34.000000000 +0100
+++ mISDN-1_1_9_2/drivers/isdn/hardware/mISDN/core.h	2011-07-20 16:42:17.471001559 +0200
@@ -4,6 +4,7 @@
  *
  */
 
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/mISDNif.h>
@@ -61,6 +62,7 @@ extern mISDNinstance_t	*get_instance(mIS
 
 /* from sysfs_obj.c */
 extern int		mISDN_register_sysfs_obj(mISDNobject_t *);
+extern void		mISDN_unregister_sysfs_obj(mISDNobject_t *);
 extern int		mISDN_sysfs_init(void);
 extern void		mISDN_sysfs_cleanup(void);