[Xenomai] request_irq with xenomai

[Xenomai] request_irq with xenomai

[aking_jin]

Hi,all
     I've patched the kernel 3.5.7 with xenomai,and xenomai have been 
enabled. After that, I want to have a  normal gpio interrupt test with 
normal way using request_irq, found its return value is -/EINVAL,
Finally found that IRQ_NOREQUEST was set in the irq_desc[irq_number] 
through debug. could you give me some advice? thanks.
         the following was the irq_desc of irq_gpio:

         [   66.087719] irq 10, desc: c1805600, depth: 0, count: 0, 
unhandled: 0
         [   66.097903] ->handle_irq():  c0065678, 
__ipipe_chained_irq+0x0/0x4
         [   66.104157] ->irq_data.chip(): c052de50, 
pxa_internal_irq_chip+0x0/0x70
         [   66.110751] ->action():   (null)
         [   66.114010]    IRQ_NOPROBE set
         [   66.117039]  IRQ_NOREQUEST set
         [   66.120063]   IRQ_NOTHREAD set

Thank you very much~
/

-- 
Best Regards
aking_jin

Re: [Xenomai] request_irq with xenomai

[Gilles Chanteperdrix]

On 06/21/2013 11:41 AM, aking_jin wrote:

> Hi,all
>      I've patched the kernel 3.5.7 with xenomai,and xenomai have been 
> enabled. After that, I want to have a  normal gpio interrupt test with 
> normal way using request_irq, found its return value is -/EINVAL,
> Finally found that IRQ_NOREQUEST was set in the irq_desc[irq_number] 
> through debug. could you give me some advice? thanks.
>          the following was the irq_desc of irq_gpio:
> 
>          [   66.087719] irq 10, desc: c1805600, depth: 0, count: 0, 
> unhandled: 0
>          [   66.097903] ->handle_irq():  c0065678, 
> __ipipe_chained_irq+0x0/0x4
>          [   66.104157] ->irq_data.chip(): c052de50, 
> pxa_internal_irq_chip+0x0/0x70
>          [   66.110751] ->action():   (null)
>          [   66.114010]    IRQ_NOPROBE set
>          [   66.117039]  IRQ_NOREQUEST set
>          [   66.120063]   IRQ_NOTHREAD set
> 
> Thank you very much~
> /
> 


I would say you are using the wrong irq number, you are using the irq
number of the parent, multiplexed interrupt, instead of using the
per-gpio irq number (which you should obtain with gpio_to_irq), but this
question is off-topic on this list, since it has nothing to do with xenomai.


-- 
                                                                Gilles.