Re: [PATCH 4/5] Centralise NO_IRQ definition

From: Linus Torvalds
Date: Mon Nov 21 2005 - 16:52:13 EST

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).

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