linux-kernel - Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override

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Message-ID: <20071230130544.GB16946@elte.hu>
Date:	Sun, 30 Dec 2007 14:05:44 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Rene Herman <rene.herman@...access.nl>, dpreed@...d.com,
	Islam Amer <pharon@...il.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>, hpa@...or.com,
	Pavel Machek <pavel@....cz>, Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override


* Andi Kleen <andi@...stfloor.org> wrote:

> > drivers that then are shown to really need it could use their *own* 
> > ports.
> 
> The i8259 driver uses it and it is known to be needed on some old 
> chipsets. But it doesn't really have any "own" ports to use afaik.

we'll solve that via an i8259-specific quirk. That is a lot cleaner and 
maintainable than the current generic, always-enabled "opt out" 
port-0x80 quirk.

	Ingo
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