Commits
Hans de Goede committed 654a182d856
ACPI / video: Add a parameter to not register the backlight sysfs interface On some systems acpi-video backlight is broken in the sense that it cannot control the brightness of the backlight, but it must still be called on resume to power-up the backlight after resume. This commit allows these systems to work by going through all the usual backlight control moves, while not registering a sysfs backlight interface. This commit also adds a quirk enabling this parameter on Toshiba Portege R830 systems which are known to be affected by this. I wish there was a better way to deal with this, but we've been unable to find one. Link: https://bugzilla.kernel.org/show_bug.cgi?id=21012 Link: https://bugs.freedesktop.org/show_bug.cgi?id=82634 Reported-and-tested-by: Sylvain Pasche <sylvain.pasche@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>