Re: [Xenomai-help] Problem with interrupt enabling

[Philippe Gerum <rpm@xenomai.org>]

On Fri, 2007-05-25 at 13:04 +0200, Johan Borkhuis wrote:
> Hello,
> 
> I am trying to create an RTDM interrupt handler for an external 
> interrupt. I use a rtdm_irq_request, followed by a rtdm_irq_enable. This 
> caused one interrupt to be processed, but subsequent interrupts were not 
> processed.
> After adding an extra rtdm_irq_enable to the ISR the interrupts are 
> processed. When I look at the other drivers I don't see this. Is this 
> needed, or is there a bug/feature in the interrupt handling on my platform?
> (I use a MVME3100 with a ppc8540 processor and openPIC interrupt 
> controller).
> 

Does this help?

--- arch/ppc/syslib/open_pic.c~	2006-11-17 15:55:24.000000000 +0100
+++ arch/ppc/syslib/open_pic.c	2007-05-26 11:09:03.000000000 +0200
@@ -833,7 +833,7 @@
 {
 #if defined(__SLOW_VERSION__) || defined(CONFIG_IPIPE)
 	if (!(irq_desc[irq_nr].status & (IRQ_DISABLED|IRQ_INPROGRESS))
-	    && irq_desc[irq_nr].action)
+	    && (!ipipe_root_domain_p || irq_desc[irq_nr].action))
 		openpic_enable_irq(irq_nr);
 #else
 	if ((irq_desc[irq_nr].status & IRQ_LEVEL) != 0)

> Kind regards,
>     Johan Borkhuis
> 
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-- 
Philippe.