[Xenomai] rtdm_event_wait not working as expected

[Xenomai] rtdm_event_wait not working as expected

[JAY KOTHARI]

Hello,
      I am using rtdm_event_wait() which returns 0 even I havn't used
rtdm_event_signal(). My rtdm driver is not going into blocking state.
I am using arm platform. On x86 platform this api worked
perfectly.What might be I missing?

Thank you

Jay Kothari

Re: [Xenomai] rtdm_event_wait not working as expected

[Jeffrey Melville]

On 2/20/2015 4:01 AM, JAY KOTHARI wrote:
> Hello,
>       I am using rtdm_event_wait() which returns 0 even I havn't used
> rtdm_event_signal(). My rtdm driver is not going into blocking state.
> I am using arm platform. On x86 platform this api worked
> perfectly.What might be I missing?
> 
> Thank you
> 
> Jay Kothari
> 
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> Xenomai mailing list
> Xenomai@xenomai.org
> http://www.xenomai.org/mailman/listinfo/xenomai
> 
Are you calling rtdm_event_wait() from a non-RT context? I noticed in my
application* that rtdm_event_wait() always returns 0 in non-RT and I
needed to ensure rtdm_event_wait() is only called from RT context.

I'm not sure if 0 is the intended return value or not, but the
documentation does specify that NRT isn't a valid calling context.

*Zynq, Kernel 3.8, Xenomai 2.6.4.

Jeff

(Sorry, forgot to reply to list the first time)

Re: [Xenomai] rtdm_event_wait not working as expected

[JAY KOTHARI]

Thank you Jeff for reply

> Are you calling rtdm_event_wait() from a non-RT context? I noticed in my
> application* that rtdm_event_wait() always returns 0 in non-RT and I
> needed to ensure rtdm_event_wait() is only called from RT context.
>

I am calling from rtdm_event_wait() from function which is in rtdm
driver real time read function. But its returning 0 with even calling
rtdm_event_signal().

> I'm not sure if 0 is the intended return value or not, but the
> documentation does specify that NRT isn't a valid calling context.
>
> *Zynq, Kernel 3.8, Xenomai 2.6.4.
>