Re: [PATCH 4/5] Centralise NO_IRQ definition

[Linus Torvalds <torvalds@osdl.org>]

On Mon, 21 Nov 2005, Ingo Molnar wrote:
> 
> oh well [*]. Then it's gotta be the !dev->irq.valid thing i guess. 

No it's not.

The ppc PCI probing could trivilly just turn a 0 into 256 (or equivalent), 
and mask off the low 7 bits when installing the handler.  They know the 
interrupt is _really_ 0 from other sources (ie they have a different 
firmware, with explicit callbacks, and/or hardcoded knowledge).

		Linus
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