Re: [PATCH 4/5] Centralise NO_IRQ definition

From: Paul Mackerras
Date: Mon Nov 21 2005 - 16:25:08 EST

Ingo Molnar writes:

> is there any architecture where irq 0 is a legitimate setting that could
> occur in drivers, and which would make NO_IRQ define of 0 non-practical?

Yes, G5 powermacs have the SATA controller on irq 0. So if we can't
use irq 0, I can't get to my hard disk. :) Other powermacs also use
irq 0 for various things, as do embedded PPC machines.

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