On Thursday 17 November 2016 23:24:36 Hans de Goede wrote:
> In some cases it may be desirable for userspace to be notified when
> a trigger event happens. This commit adds support for a poll-able
> current_brightness trigger specific sysfs attribute which triggers
> may register:
> 
> What:		/sys/class/leds/<led>/current_brightness

What about name actual_brightness? That name is already used by 
/sys/class/backlight/...

-- 
Pali Rohár
pali.rohar@gmail.com