cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fb_notify.c (1484B)

      1/*
      2 *  linux/drivers/video/fb_notify.c
      3 *
      4 *  Copyright (C) 2006 Antonino Daplas <adaplas@pol.net>
      5 *
      6 *	2001 - Documented with DocBook
      7 *	- Brad Douglas <brad@neruo.com>
      8 *
      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.
     12 */
     13#include <linux/fb.h>
     14#include <linux/notifier.h>
     15#include <linux/export.h>
     16
     17static BLOCKING_NOTIFIER_HEAD(fb_notifier_list);
     18
     19/**
     20 *	fb_register_client - register a client notifier
     21 *	@nb: notifier block to callback on events
     22 *
     23 *	Return: 0 on success, negative error code on failure.
     24 */
     25int fb_register_client(struct notifier_block *nb)
     26{
     27	return blocking_notifier_chain_register(&fb_notifier_list, nb);
     28}
     29EXPORT_SYMBOL(fb_register_client);
     30
     31/**
     32 *	fb_unregister_client - unregister a client notifier
     33 *	@nb: notifier block to callback on events
     34 *
     35 *	Return: 0 on success, negative error code on failure.
     36 */
     37int fb_unregister_client(struct notifier_block *nb)
     38{
     39	return blocking_notifier_chain_unregister(&fb_notifier_list, nb);
     40}
     41EXPORT_SYMBOL(fb_unregister_client);
     42
     43/**
     44 * fb_notifier_call_chain - notify clients of fb_events
     45 * @val: value passed to callback
     46 * @v: pointer passed to callback
     47 *
     48 * Return: The return value of the last notifier function
     49 */
     50int fb_notifier_call_chain(unsigned long val, void *v)
     51{
     52	return blocking_notifier_call_chain(&fb_notifier_list, val, v);
     53}
     54EXPORT_SYMBOL_GPL(fb_notifier_call_chain);