x86/uv: Fix uninitialized spinlocks
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / video / fb_notify.c
blob74c2da5288848a99a410958c6bca1a7922d3dbd0
1 /*
2 * linux/drivers/video/fb_notify.c
4 * Copyright (C) 2006 Antonino Daplas <adaplas@pol.net>
6 * 2001 - Documented with DocBook
7 * - Brad Douglas <brad@neruo.com>
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
11 * for more details.
13 #include <linux/fb.h>
14 #include <linux/notifier.h>
15 #include <linux/export.h>
17 static BLOCKING_NOTIFIER_HEAD(fb_notifier_list);
19 /**
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);
29 /**
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);
39 /**
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);