Re: [Xenomai] rtdm_irq_request not registering irq

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

On Mon, Feb 16, 2015 at 10:28:51AM +0530, JAY KOTHARI wrote:
> Hello,
>          I am requesting interrupt with rtdm_irq_request. API works
> without error but not irq is not working. When I look into dmesg I get
> back-trace of this API but no error. I even looked in /proc/interrupts
> but no sign of registration. What might be wrong with this API for
> me??

You will not see an interrupt registered with rtdm_irq_request in
/proc/interrupts, /proc/interrupts lists interrupts registered with
request_irq. An interrupt registered with rtdm_irq_request appears
in /proc/xenomai/irq.

Does exactly the same irq number work when requesting it with
request_irq ?

If no, then you may have made an error in the irq number: Linux irqs
are now remapped and the irq number passed to request_irq may not be
the same as the hardware irq number you would expect.

If yes, then are you running xenomai on an arm platform? If yes, we
have a very old bug which has been fixed only recently, normally,
requesting the irq both with request_irq and rtrm_irq_request should
avoid this bug.

-- 
					    Gilles.