[PATCH v2 2/3] libata: fix translation of concurrent positioning ranges

From: Tyler Erickson <tyler.erickson@seagate.com>
To: damien.lemoal@opensource.wdc.com, jejb@linux.ibm.com,
	martin.petersen@oracle.com
Cc: linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org,
	muhammad.ahmad@seagate.com, tyler.erickson@seagate.com,
	stable@vger.kernel.org
Subject: [PATCH v2 2/3] libata: fix translation of concurrent positioning ranges
Date: Thu,  2 Jun 2022 16:51:12 -0600	[thread overview]
Message-ID: <20220602225113.10218-3-tyler.erickson@seagate.com> (raw)
In-Reply-To: <20220602225113.10218-1-tyler.erickson@seagate.com>

Fixing the page length in the SCSI translation for the concurrent
positioning ranges VPD page. It was writing starting in offset 3
rather than offset 2 where the MSB is supposed to start for
the VPD page length.

Cc: stable@vger.kernel.org
Fixes: fe22e1c2f705 ("libata: support concurrent positioning ranges log")
Signed-off-by: Tyler Erickson <tyler.erickson@seagate.com>
Reviewed-by: Muhammad Ahmad <muhammad.ahmad@seagate.com>
Tested-by: Michael English <michael.english@seagate.com>
---
 drivers/ata/libata-scsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 42cecf95a4e5..86dbb1cdfabd 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2125,7 +2125,7 @@ static unsigned int ata_scsiop_inq_b9(struct ata_scsi_args *args, u8 *rbuf)
 
 	/* SCSI Concurrent Positioning Ranges VPD page: SBC-5 rev 1 or later */
 	rbuf[1] = 0xb9;
-	put_unaligned_be16(64 + (int)cpr_log->nr_cpr * 32 - 4, &rbuf[3]);
+	put_unaligned_be16(64 + (int)cpr_log->nr_cpr * 32 - 4, &rbuf[2]);
 
 	for (i = 0; i < cpr_log->nr_cpr; i++, desc += 32) {
 		desc[0] = cpr_log->cpr[i].num;
-- 
2.17.1

