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ata: SATL compliance for Inquiry Product Revision 

The SCSI-to-ATA Translation standard says to use data words 25 and 26
unless they are spaces. For devices that use these words in the firmware
field, they are generally more useful anyway.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Keith Busch 2014-05-01 11:12:03 -06:00 committed by Tejun Heo
parent 7a56c0ba26
commit c49a6bf5ee
1 changed files with 5 additions and 1 deletions
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6
drivers/ata/libata-scsi.c
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@ -1993,7 +1993,11 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
memcpy(rbuf, hdr, sizeof(hdr));
memcpy(&rbuf[8], "ATA ", 8);
ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16);
ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4);
/* From SAT, use last 2 words from fw rev unless they are spaces */
ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV + 2, 4);
if (strncmp(&rbuf[32], " ", 4) == 0)
ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4);
if (rbuf[32] == 0 || rbuf[32] == ' ')
memcpy(&rbuf[32], "n/a ", 4);