forked from Minki/linux
ACPI / video: Fix use_native_backlight selection logic
Commit751109aad5
("ACPI / video: Change the default for video.use_native_backlight to 1") has changed the default for use_native_backlight from 0 to 1, but instead of changing use_native_backlight_dmi to true, and leaving use_native_backlight_param at -1, it has changed use_native_backlight_param to 1. This causes acpi_video_use_native_backlight() to always think that a value was specified through the param, making it impossible to add a dmi based quirk to force 0 now that the default is 1. This fixes this by restoring the use_native_backlight_param default to -1, and instead setting the use_native_backlight_dmi default to true. Fixes:751109aad5
(ACPI / video: Change the default for video.use_native_backlight to 1) Cc: 3.16+ <stable@vger.kernel.org> # 3.16+ Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -82,9 +82,9 @@ module_param(allow_duplicates, bool, 0644);
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* For Windows 8 systems: used to decide if video module
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* should skip registering backlight interface of its own.
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*/
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static int use_native_backlight_param = 1;
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static int use_native_backlight_param = -1;
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module_param_named(use_native_backlight, use_native_backlight_param, int, 0444);
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static bool use_native_backlight_dmi = false;
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static bool use_native_backlight_dmi = true;
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static int register_count;
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static struct mutex video_list_lock;
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