From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Tejun Heo <htejun@gmail.com>
Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org,
jgarzik@pobox.com
Subject: Re: ata_piix failure on ich6m
Date: Thu, 11 May 2006 09:11:40 +0100 [thread overview]
Message-ID: <20060511081140.GA21594@srcf.ucam.org> (raw)
In-Reply-To: <44629E68.3020302@gmail.com>
On Thu, May 11, 2006 at 11:16:08AM +0900, Tejun Heo wrote:
> I'm not very sure but it might be historical. ahci got implemented
> after ata_piix and in the meantime ata_piix must have handled all it
> could. Can you verify whether modifying the code to return -ENODEV work
> for your machine? If so, that could be the correct solution but I'm a
> bit worried because it could change probing order or fail to enable
> devices it used to. Maybe we need a hack to return -ENODEV iff ahci is
> there to handle the device.
I can verify that just loading ahci before ata_piix is successful, and
udev will load both of them since the PCI IDs match. So just having
ata_piix refuse to bind would solve the problem. Unfortunately I can't
see a way of doing this only if ahci is present if they're modular...
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2006-05-11 8:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-10 23:56 ata_piix failure on ich6m Matthew Garrett
2006-05-11 2:16 ` Tejun Heo
2006-05-11 8:11 ` Matthew Garrett [this message]
2006-05-11 15:45 ` Randy.Dunlap
2006-05-11 16:16 ` Matthew Garrett
2006-05-13 3:42 ` Jeff Garzik
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