linux-kernel - Re: via irq quirk breakage

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Message-ID: <45BF0281.2020102@yahoo.com.au>
Date:	Tue, 30 Jan 2007 19:32:01 +1100
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	Jean Delvare <jdelvare@...e.de>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Daniel Drake <dsd@...ctivated.net>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Adrian Bunk <bunk@...sta.de>
Subject: Re: via irq quirk breakage

Hi Jean,

Jean Delvare wrote:

> You have an old VT82C686 south bridge, which was tagged as "special" by
> Alan. For this chip, Alan's code only allows devices 00:00.x to be quirked.
> As my code was merely a reimplementation of Alan's idea, it does the same.
> Your USB controllers are at 00:07.x, so I'm not surprised they weren't
> quirked.
> 
> Alan, why were dev_lo and dev_hi both set to 0 for the VT82C868 in your
> implementation? Is it a typo, or...?
> 
> Nick, I guess the following patch would work better for you? I've listed
> devices 00:07.x as quirkable for the VT82C686.
> 
> * * * * *
> 
> Fix VIA quirks that were recently broken by Alan Cox in the upstream
> kernel (commit 1597cacbe39802d86656d1f2e6329895bd2ef531).

Thanks for making the patch, it works like a charm now. The quirk
gets applied to both USB controllers.

> My understanding is that pci_find_present() doesn't work yet at the
> time the quirks are run. So I used a two-step quirk as is done for
> some other quirks already. First we detect the VIA south bridges
> and set the right low and high device limits, then we are ready to
> actually run the quirks on the affected devices.

-- 
SUSE Labs, Novell Inc.
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