From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Phil Pemberton <philpem@philpem.me.uk>
Cc: linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org, Damien Le Moal <dlemoal@kernel.org>,
Niklas Cassel <cassel@kernel.org>,
"James E . J . Bottomley" <James.Bottomley@HansenPartnership.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Hannes Reinecke <hare@suse.de>
Subject: Re: [PATCH v6 6/6] scsi: scsi_devinfo: add COMPAQ PD-1 multi-LUN ATAPI device quirk
Date: Mon, 15 Jun 2026 21:08:43 -0400 [thread overview]
Message-ID: <yq1jyrzwav0.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <20260608213443.2296614-7-philpem@philpem.me.uk> (Phil Pemberton's message of "Mon, 8 Jun 2026 22:34:43 +0100")
Phil,
> The COMPAQ PD-1 (OEM Panasonic/Matsushita LF-1195C) is a PD/CD combo
> drive that exposes two ATAPI LUNs: LUN 0 is a CD-ROM (TYPE_ROM),
> LUN 1 is a 650 MB PD (TYPE_DISK).
>
> Add it to the SCSI device list with:
> - BLIST_FORCELUN: tells the SCSI layer to scan past LUN 0
> - BLIST_SINGLELUN: serialises commands across the two LUNs, since
> the drive has a single transport and cannot handle concurrent
> operations on both
> - BLIST_NO_LUN_1F: the drive returns PQ=0/PDT=0x1f for unpopulated
> LUNs instead of PQ=3; this flag tells scsi_probe_and_add_lun()
> to silently skip them
>
> The INQUIRY strings as reported by the device are:
> Vendor: "COMPAQ " (T10 format, space-padded)
> Product: "PD-1"
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
--
Martin K. Petersen
prev parent reply other threads:[~2026-06-16 1:08 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-08 21:34 [PATCH v6 0/6] ata: libata-scsi: multi-LUN ATAPI device support Phil Pemberton
2026-06-08 21:34 ` [PATCH v6 1/6] ata: libata-scsi: add atapi_max_lun module parameter Phil Pemberton
2026-06-08 22:10 ` sashiko-bot
2026-06-08 21:34 ` [PATCH v6 2/6] ata: libata-scsi: convert dev->sdev to per-LUN array Phil Pemberton
2026-06-08 22:12 ` sashiko-bot
2026-06-09 7:22 ` Hannes Reinecke
2026-06-10 23:14 ` Phil Pemberton
2026-06-08 21:34 ` [PATCH v6 3/6] ata: libata-scsi: route non-zero LUN commands for multi-LUN ATAPI Phil Pemberton
2026-06-08 22:13 ` sashiko-bot
2026-06-09 7:24 ` Hannes Reinecke
2026-06-08 21:34 ` [PATCH v6 4/6] scsi: add BLIST_NO_LUN_1F blacklist flag Phil Pemberton
2026-06-08 22:10 ` sashiko-bot
2026-06-09 7:24 ` Hannes Reinecke
2026-06-16 1:09 ` Martin K. Petersen
2026-06-08 21:34 ` [PATCH v6 5/6] ata: libata-scsi: probe additional LUNs for multi-LUN ATAPI devices Phil Pemberton
2026-06-08 22:17 ` sashiko-bot
2026-06-09 7:25 ` Hannes Reinecke
2026-06-08 21:34 ` [PATCH v6 6/6] scsi: scsi_devinfo: add COMPAQ PD-1 multi-LUN ATAPI device quirk Phil Pemberton
2026-06-16 1:08 ` Martin K. Petersen [this message]
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