linux-kernel - Re: [PATCH V3] VIA IRQ quirk behaviour change

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Message-ID: <20060919201231.GA7560@srcf.ucam.org>
Date:	Tue, 19 Sep 2006 21:12:31 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Lee Revell <rlrevell@...-job.com>
Cc:	Greg KH <greg@...ah.com>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Daniel Drake <dsd@...too.org>, akpm@...l.org,
	torvalds@...l.org, sergio@...giomb.no-ip.org, jeff@...zik.org,
	cw@...f.org, bjorn.helgaas@...com, linux-kernel@...r.kernel.org,
	harmon@....edu, len.brown@...el.com, vsu@...linux.ru,
	liste@...det.net
Subject: Re: [PATCH V3] VIA IRQ quirk behaviour change

On Tue, Sep 19, 2006 at 04:04:27PM -0400, Lee Revell wrote:
> On Sun, 2006-09-10 at 21:45 +0100, Matthew Garrett wrote:
> > On Sun, Sep 10, 2006 at 02:40:46PM -0400, Lee Revell wrote:
> > 
> > > Some applications such as realtime audio and probably gaming require
> > > ACPI to be disabled, as it causes horrible latency problems.  This
> > > applies equally to Linux and Windows.
> > 
> > How, and on what hardware?
> 
> Here's a case where the kernel does not see a user's sound card at all
> unless ACPI is disabled (second to last comment):

That's more likely to be an interrupt routing issue than anything 
intrinsically awkward with ACPI.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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