912e8b12ee
Ville and I were wondering why his laptop was missing the intel_backlight sysfs interface. Turns out we never register it when CONFIG_BACKLIGHT_CLASS_DEVICE=m. This has been broken ever since the i915 native backlight interface was added. CC: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Damien Lespiau <damien.lespiau@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>