linux-kernel - Re: [patch] x86 supports NO

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Date:	Tue, 24 Jun 2008 06:06:31 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	David Brownell <david-b@...bell.net>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, hpa@...or.com
Subject: Re: [patch] x86 supports NO_IRQ convention

On Mon, 2008-06-23 at 04:28 -0700, David Brownell wrote:
> On Monday 23 June 2008, Benjamin Herrenschmidt wrote:
> > NO_IRQ on x86 is 0
> 
> There is no such #define for it.
> And since zero is used for timer IRQs, it's not invalid.

I'll refer you to past discussions with Linus here. 0 is invalid to
drivers for all intend and purposes.

Cheers,
Ben.


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