drm/i915: return actual brightness to .get_brightness callback
The backlight device .get_brightness callback is supposed to return the actual brightness by querying the hardware, not the cached value. See Documentation/ABI/stable/sysfs-class-backlight. The callback is there to support the actual_brightness sysfs file. With the backlight_level and backlight device brightness now in sync, one can reliably get the cached value through the brightness sysfs file. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Showing
Please register or sign in to comment