linux-kernel - Re: [PATCH] pata_of_platform: fix no irq handling

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Message-ID: <20081008100025.1c535401@lxorguk.ukuu.org.uk>
Date:	Wed, 8 Oct 2008 10:00:25 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Tejun Heo <tj@...nel.org>, avorontsov@...mvista.com,
	Matt Sealey <matt@...esi-usa.com>,
	Jeff Garzik <jgarzik@...ox.com>, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	Li Yang <leoli@...escale.com>, Wang Jian <lark@...ux.net.cn>
Subject: Re: [PATCH] pata_of_platform: fix no irq handling

On Wed, 08 Oct 2008 09:40:54 +0100
David Woodhouse <dwmw2@...radead.org> wrote:

> On Tue, 2008-10-07 at 10:37 +0100, Alan Cox wrote:
> > Zero means no IRQ. Any platform with bits of code left over exposing IRQ
> > 0 is already not supported by lots of driver code including libata.
> 
> ...and must implement some kind of interrupt remapping crap just to work
> around this bogus design decision.

I'll leave you to argue with Linus about that, but since that was the
decision back in 2005 (for good C reasons) we can safely rely on it.
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