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

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Message-ID: <Pine.LNX.4.64.0810081159240.24611@vixen.sonytel.be>
Date:	Wed, 8 Oct 2008 11:59:59 +0200 (CEST)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
cc:	David Woodhouse <dwmw2@...radead.org>,
	Li Yang <leoli@...escale.com>, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	Tejun Heo <tj@...nel.org>, Jeff Garzik <jgarzik@...ox.com>,
	Wang Jian <lark@...ux.net.cn>
Subject: Re: [PATCH] pata_of_platform: fix no irq handling

On Wed, 8 Oct 2008, Alan Cox wrote:
> 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.

`git grep NO_IRQ include arch/*/include' is still quite enlightening...

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre Europe
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