Re: [PATCH 2/2] uio: add an of_genirq driver

Hans J. Koch
2009-06-14T19:24:18Z

On Sun, Jun 14, 2009 at 09:05:33PM +0200, Wolfram Sang wrote:
>
> > Anyway, 0 is a valid IRQ number, so it cannot be used as "no irq".
>
> May I point you to this thread?
>
> http://lkml.org/lkml/2005/11/21/221

Linus is just plain wrong in this 4 year old mail.

>
> (The issue comes up once in a while as some archs still use NO_IRQ, some with
> 0 some with -1)
>
> > > if (uioinfo->irq == NO_IRQ)
> > > uioinfo->irq = UIO_IRQ_NONE;
> >
> > Sorry for my ignorance, but what is NO_IRQ? If I do a
> >
> > grep -r NO_IRQ include/
> >
> > I get nothing.
>
> Try a 'cd arch' before that :)

no such luck in arch/x86/ ...

>
> > Well, you claim it's a false positive. So far, you did not get any responses,
> > AFAICS. I tend to agree with you, but I'd like to avoid patches that don't
> > pass checkpatch.pl, whatever the reason. Either the false positive gets
> > confirmed and fixed, or you should fix your patch.
>
> Well, I assume that issues regarding checkpatch do not have the highest
> priority (especially while the merge-window is open), which is understandable.
> Fixing this bug (I take any bets that this is one ;)) might not be so trivial,
> as modifying $Attributes can easily have lots of side-effects.
>
> Now, all this does not matter much, as the objections Grant raised are valid
> and there might be a totally different outcome to bind devices to UIO. But at
> least, we have some code to discuss...

OK, I'm looking forward to your next version.

Thanks,
Hans

>
> Regards,
>
> Wolfram
>
> --
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