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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