From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeff Garzik <jeff@garzik.org>
Subject: Re: [PATCH v2] libata: Simulate REPORT LUNS for ATAPI devices
Date: Thu, 07 Dec 2006 07:20:54 -0500
Message-ID: <45780726.8010107@garzik.org>
References: <4574A90E.5010801@us.ibm.com> <4574AB78.40102@garzik.org> <4574B004.6030606@us.ibm.com>
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To: "Darrick J. Wong" <djwong@us.ibm.com>
Cc: linux-scsi <linux-scsi@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, "linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>, Alan Cox <alan@lxorguk.ukuu.org.uk>

Darrick J. Wong wrote:
> The Quantum GoVault SATAPI removable disk device returns ATA_ERR in
> response to a REPORT LUNS packet.  If this happens to an ATAPI device
> that is attached to a SAS controller (this is the case with sas_ata),
> the device does not load because SCSI won't touch a "SCSI device"
> that won't report its LUNs.  Since most ATAPI devices don't support
> multiple LUNs anyway, we might as well fake a response like we do for
> ATA devices.
> 
> Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>

Seems sane to me, but I would like additional comment/testing/etc. 
before applying...