Re: Device hang when offlining a CPU due to IRQ misrouting

["Siddha, Suresh B" <suresh.b.siddha@intel.com>]

On Sat, Jun 23, 2007 at 06:45:05PM -0600, Eric W. Biederman wrote:
> 
> Hmm.  It looks like Siddha sent the wrong version of the patch.
> The working tested version had an additional test to ensure
> the mask and unmask methods were implemented.
> 
> i.e.
> +		if (irq_desc[irq].chip->mask)
> +			irq_desc[irq].chip->mask(irq);
> and
> 
> +		if (irq_desc[irq].chip->unmask)
> +			irq_desc[irq].chip->unmask(irq);
> +
> 
> Siddha think you can resend the correct version.

Eric, In this version, I added the irq_has_action() check and hence
removed the check which ensures the presence for mask/unmask. My tests
showed that it was working fine. May be I am missing something.

> 
> Rafael.  Think you can add those two ifs and see if you test bed box
> works?
> 
> I'm still not convinced that we can make fixup_irqs work in general
> but if we aren't going to yank it we should at least make it
> consistent with the rest of the code.

I agree.

thanks,
suresh