ACPI / video: Add a disable_native_backlight quirk
authorHans de Goede <hdegoede@redhat.com>
Thu, 28 Aug 2014 08:20:46 +0000 (10:20 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 1 Sep 2014 23:53:44 +0000 (01:53 +0200)
commit5f24079b021cd3147c8d24ba65833f7a0df7e80d
treee368e031c6bdc05baea45ce8c576b3c512d58c7c
parent25294e9f00f03b2b4f4c56e913bc8c573972f33b
ACPI / video: Add a disable_native_backlight quirk

Some laptops have a working acpi_video backlight control, and using native
backlight on these causes a regression where backlight control does not work
when userspace is not handling brightness key events. Disable native_backlight
on these to fix this.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=81691
Reported-and-tested-by: Andre Müller <andre.muller@web.de>
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>
drivers/acpi/video.c