Re: [PATCH v5 06/27] irq_domain/powerpc: eliminate irq_map; use irq_alloc_desc() instead

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On Wed, 2012-04-11 at 11:13 +1000, Benjamin Herrenschmidt wrote:
> On Sat, 2012-04-07 at 14:27 +0200, Andreas Schwab wrote:
> > Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> writes:
> > 
> > > It's arguable that this irq_set_irq_type(,NONE) shouln't be there but
> > > still ... it's been around for ever and things worked :-) So something
> > > -else- is causing the problem and I'd like to understand what exactly.
> > 
> > AFAICS before a09b659cd68c10ec6a30cb91ebd2c327fcd5bfe5
> > irq_set_irq_type(,NONE) was actually a no-op.
> So I'm still a bit baffled... ie, I understand some of what's happening
> but not why it breaks things, I haven't yet managed to reproduce but I
> haven't tried too hard just yet (was away from the HW) :

Allright, I have a repro-case, I'll dig.


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