Hi! > In view of the above we could report hw brightness changes with POLLPRI > on brightness file, but unfortunately we can't because it is impossible > to guarantee that readout of brightness file will return the brightness > the POLLPRI was meant to notify about. Agreed here. > That's why a separate read only file seems to be the only proper > solution. Yes please. And lets make self-changing leds into a trigger, as proposed, and as Hans' patch should be already doing. > Moreover, the file should return the brightness from the time > of last POLLPRI. Not sure I agree here. Normally, kernel returns current state for variables, does not track "old" state. Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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