Re: Trying to free free IRQ

mullein (mullein@aa.net)
Sat, 21 Aug 1999 00:13:45 -0700 (PDT)


I am experiencing the same messages, in my case it is "Trying to free free
IRQ 4", which is used by my mouse with gpm.
I traced the line to arch/i386/kernel/irq.c, function free_irq().
It looks like the behavior in 2.3.11 was to:

spin_unlock_irqrestore(&irq_controller_lock,flags);
/* Wait to make sure it's not being used on another CPU */
while (irq_desc[irq].status & IRQ_INPROGRESS)
barrier();
kfree(action);
return;
}
printk("Trying to free free IRQ%d\n",irq);
spin_unlock_irqrestore(&irq_controller_lock,flags);
}

2.3.14, on the other hand, has simply:
printk("Trying to free free IRQ%d\n",irq);
spin_unlock_irqrestore(&irq_controller_lock,flags);
}

I haven't the level of understanding to resolve this, but perhaps this can
help someone out there.

mullein

On Sat, 21 Aug 1999, David Odin wrote:

> On Fri, Aug 20, 1999 at 09:00:02PM -0400, Smc659@aol.com wrote:
> > Its trying to free an IRQ thats in conflict with another. If IRQ3 only shows
> > up on PPP then it must be your modem. Have you added any new devices lately?
> >
> No. I've the same hardware for almost a year now.
> I'm trying to apply the .15-pre1 patch to see if it cures the problem...
>
> Thanks,
>
> DindinX
>
> --
> David.Odin@bigfoot.com
>
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