[Xenomai] Gpio: IRQ handler is called ~4ms after state change

Giulio Moro g.moro at qmul.ac.uk
Tue Jun 20 03:57:30 CEST 2017

> This is unlikely a Xenomai issue strictly speaking. You may want to
> check the I-pipe code instead, there is certainly a problem with the
> interrupt delivery code in the low level handler.

I have no idea where to start from in checking the i-pipe code.

What I can say is that I went back to 4.4.43, which is the version originally targeted by the i-pipe patch which is released on the xenomai website, and the issue is still there.

Any pointers appreciated.


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