From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeff Garzik <jgarzik@pobox.com>
Subject: Re: [PATCH 2.6.23-rc4][reRESEND] ahci: RAID mode SATA patch for Intel
 Tolapai
Date: Fri, 31 Aug 2007 03:47:15 -0400
Message-ID: <46D7C783.8050803@pobox.com>
References: <200708302127.19535.jason.d.gaston@intel.com>
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To: Jason Gaston <jason.d.gaston@intel.com>
Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org

Jason Gaston wrote:
> Resend trying to remove 8-bit characters in the email.
> 
> This patch adds the Intel Tolapai RAID controller DID's for SATA support.
> 
> Signed-off-by:  Jason Gaston <jason.d.gaston@intel.com>
> 
> --- linux-2.6.23-rc4/drivers/ata/ahci.c.orig	2007-08-27 18:32:35.000000000 -0700
> +++ linux-2.6.23-rc4/drivers/ata/ahci.c	2007-08-28 16:58:11.000000000 -0700
> @@ -411,6 +411,8 @@
>  	{ PCI_VDEVICE(INTEL, 0x292f), board_ahci_pi }, /* ICH9M */
>  	{ PCI_VDEVICE(INTEL, 0x294d), board_ahci_pi }, /* ICH9 */
>  	{ PCI_VDEVICE(INTEL, 0x294e), board_ahci_pi }, /* ICH9M */
> +	{ PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
> +	{ PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */

Why did you not use board_ahci_pi?  Is the AHCI ports-implemented 
register unreliable on this platform?