linux-kernel - Re: Loading both the pata_atiixp and the ahci driver causes problems

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Message-ID: <45F9F5F0.3090508@jonmasters.org>
Date:	Thu, 15 Mar 2007 21:42:08 -0400
From:	Jon Masters <jonathan@...masters.org>
To:	Chuck Ebbert <cebbert@...hat.com>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	Jeff Garzik <jgarzik@...ox.com>, linux-ide@...r.kernel.org
Subject: Re: Loading both the pata_atiixp and the ahci driver causes problems

Chuck Ebbert wrote:

> If you try to load both the pata_atiixp and the ahci driver
> (for the same ATI SB600 adapter), very strange things happen.
> The AHCI driver churns for three minutes or so, spewing
> messages like this, then nothing works:
> 
> <6>ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> <4>ata3.00: qc timeout (cmd 0xec)
> <4>ata3.00: failed to IDENTIFY (I/O error, err_mask=0x104)

> Shouldn't it be able to tell the device has already been
> claimed by some other driver?

One would assume it'd fail to grab the PCI IO ranges twice? I haven't 
looked at the code but I have seen this bug mentioned elsewhere so I 
might well end up having to do that yet :-)

Jon.
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