I'm also interrested in epoll-ing an exported gpio.
I see someone has added IRQ support for gpio pins here:
https://github.com/GBert/openwrt-misc/b ... port.patchHowever, applying this patch does not add the "edge" file for exported gpios. I am a complete noob when it comes to kernel hacking and don't even know where to begin, but still: how much work would it be to make the pins pollable? Say one wanted to integrate this feature, where would they start?
Maybe it has been done already?