linux-kernel - RE: [PATCH 2.6.32.3] ahci: AHCI and RAID mode SATA patch for Intel Cougar Point DeviceIDs

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Date:	Wed, 13 Jan 2010 07:43:53 -0800
From:	"Heasley, Seth" <seth.heasley@...el.com>
To:	David Milburn <dmilburn@...hat.com>,
	Jeff Garzik <jgarzik@...ox.com>
CC:	Robert Hancock <hancockrwd@...il.com>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 2.6.32.3] ahci: AHCI and RAID mode SATA patch for Intel
 Cougar Point DeviceIDs

>> * some of lines of Intel chips do not separate AHCI into a separate PCI
>> ID rather legacy IDE interface.  When an AHCI interface exists and
>> AHCI/IDE share the same PCI ID, we default to using AHCI.  Thus, some of
>> those PCI ID matches in ahci.c's PCI table may not get caught by the
>> generic PCI class match at the end of the table.
>>
>> * the cost carrying redundant PCI IDs seems low, harmless, and
>> potentially helpful.
>
>It is helpful for the specific device IDs to show up in "modinfo ahci" and
>modules.pcimap.
>
>David

This is the reason I was asked to start adding the AHCI DeviceIDs here.

-Seth
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