libata: fix translation of concurrent positioning ranges

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>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 42cecf9..86dbb1c 100644 (file)
--- 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;