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platform_kernel-5.15
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[libata] Slightly improved no-op REQUEST SENSE, SEND DIAGNOSTIC 

A few pedantic apps care about missing or lame "mandatory" SCSI
commands, so

REQUEST SENSE -- as we autosense, R.S. just returns zeroes

SEND DIAGNOSTIC -- our default (no-op) self-test succeeds, all
		   other requests for testing fail.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jeff Garzik 2007-09-21 06:23:42 -04:00
parent ad355b4628
commit 4539414552
1 changed files with 13 additions and 2 deletions
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15
drivers/ata/libata-scsi.c
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@ -2912,6 +2912,7 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
{
struct ata_scsi_args args;
const u8 *scsicmd = cmd->cmnd;
u8 tmp8;
args.dev = dev;
args.id = dev->id;
@ -2926,7 +2927,6 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
case SEEK_10:
case TEST_UNIT_READY:
case FORMAT_UNIT: /* FIXME: correct? */
case SEND_DIAGNOSTIC: /* FIXME: correct? */
ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
break;
@ -2979,8 +2979,19 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns);
break;
/* mandatory commands we haven't implemented yet */
case REQUEST_SENSE:
ata_scsi_set_sense(cmd, 0, 0, 0);
cmd->result = (DRIVER_SENSE << 24);
done(cmd);
break;
case SEND_DIAGNOSTIC:
tmp8 = scsicmd[1] & ~(1 << 3);
if ((tmp8 == 0x4) && (!scsicmd[3]) && (!scsicmd[4]))
ata_scsi_rbuf_fill(&args, ata_scsiop_noop);
else
ata_scsi_invalid_field(cmd, done);
break;
/* all other commands */
default: