Re: LED devices & poll() for brightness attribute
From: Pavel Machek
Date: Wed Feb 22 2017 - 07:26:14 EST
> But this support is useful just for one single central userspace
> application which will control all leds in system other application
> which will change state by /sys/class/leds/ will de-synchronize that one
> central application.
Yes. Does it matter for some real use case?
> So I think new ABI is not sufficient and I would propose to add poll()
> support also for changes done by userspace, write() to attribute
Not easily possible, as we have triggers, and this was discussed in
great great lengths before. Please go through that discussion.
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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