Re: [PATCH 4/5] Centralise NO_IRQ definition

From: Linus Torvalds
Date: Mon Nov 21 2005 - 16:38:48 EST

On Tue, 22 Nov 2005, Benjamin Herrenschmidt wrote:
> > The fact is, 0 _is_ special. Not just for hardware, but because 0 has a
> > magical meaning as "false" in the C language.
> I don't agree, irq 0 has been a valid irq on a number of platforms for
> ages

The point is, it's _not_ a valid irq for 99.9% of all machines and drivers
that have ever been tested.

Also, if you don't agree that 0 is special in the C language, then you're
just strictly _wrong_. It's an undeniable fact that zero _is_ special.

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