acpi_video.c (e219aafe50fd546b8686582ddbafd24c3c2eda04) acpi_video.c (90b066b15eda028ed44299f01236f8576dd8551d)
1/*
2 * video.c - ACPI Video Driver
3 *
4 * Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
5 * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org>
6 * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net>
7 *
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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2067 mutex_lock(&video_list_lock);
2068 list_for_each_entry(video, &video_bus_head, entry)
2069 acpi_video_bus_unregister_backlight(video);
2070 mutex_unlock(&video_list_lock);
2071 }
2072 mutex_unlock(&register_count_mutex);
2073}
2074
1/*
2 * video.c - ACPI Video Driver
3 *
4 * Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
5 * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org>
6 * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net>
7 *
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

--- 2058 unchanged lines hidden (view full) ---

2067 mutex_lock(&video_list_lock);
2068 list_for_each_entry(video, &video_bus_head, entry)
2069 acpi_video_bus_unregister_backlight(video);
2070 mutex_unlock(&video_list_lock);
2071 }
2072 mutex_unlock(&register_count_mutex);
2073}
2074
2075bool acpi_video_handles_brightness_key_presses(void)
2076{
2077 bool have_video_busses;
2078
2079 mutex_lock(&video_list_lock);
2080 have_video_busses = !list_empty(&video_bus_head);
2081 mutex_unlock(&video_list_lock);
2082
2083 return have_video_busses;
2084}
2085EXPORT_SYMBOL(acpi_video_handles_brightness_key_presses);
2086
2075/*
2076 * This is kind of nasty. Hardware using Intel chipsets may require
2077 * the video opregion code to be run first in order to initialise
2078 * state before any ACPI video calls are made. To handle this we defer
2079 * registration of the video class until the opregion code has run.
2080 */
2081
2082static int __init acpi_video_init(void)

--- 28 unchanged lines hidden --- 		2087/*
2088 * This is kind of nasty. Hardware using Intel chipsets may require
2089 * the video opregion code to be run first in order to initialise
2090 * state before any ACPI video calls are made. To handle this we defer
2091 * registration of the video class until the opregion code has run.
2092 */
2093
2094static int __init acpi_video_init(void)

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