[PATCH v3 6/7] scsi: scsi_devinfo: add COMPAQ PD-1 multi-LUN ATAPI device quirk

[Phil Pemberton <philpem@philpem.me.uk>]

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"

Signed-off-by: Phil Pemberton <philpem@philpem.me.uk>
---
 drivers/scsi/scsi_devinfo.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index 68a992494b12..bfc2cbd43897 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -150,6 +150,8 @@ static struct {
 	{"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
 	{"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
 	{"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
+	{"COMPAQ", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN |
+				 BLIST_NO_LUN_1F},
 	{"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
 	{"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
 	{"DELL", "PV660F", NULL, BLIST_SPARSELUN},
-- 
2.43.0