2 * linux/drivers/video/fb_notify.c
6 * 2001 - Documented with DocBook
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file COPYING in the main directory of this archive
14 #include <linux/notifier.h>
15 #include <linux/export.h>
17 static BLOCKING_NOTIFIER_HEAD(fb_notifier_list);
20 * fb_register_client - register a client notifier
21 * @nb: notifier block to callback on events
23 int fb_register_client(struct notifier_block *nb)
25 return blocking_notifier_chain_register(&fb_notifier_list, nb);
27 EXPORT_SYMBOL(fb_register_client);
30 * fb_unregister_client - unregister a client notifier
31 * @nb: notifier block to callback on events
33 int fb_unregister_client(struct notifier_block *nb)
35 return blocking_notifier_chain_unregister(&fb_notifier_list, nb);
37 EXPORT_SYMBOL(fb_unregister_client);
40 * fb_notifier_call_chain - notify clients of fb_events
43 int fb_notifier_call_chain(unsigned long val, void *v)
45 return blocking_notifier_call_chain(&fb_notifier_list, val, v);
47 EXPORT_SYMBOL_GPL(fb_notifier_call_chain);