diff options
| author | Jeff Garzik <jeff@garzik.org> | 2007-09-21 06:23:42 -0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-10-12 14:55:40 -0400 |
| commit | 453941455218a81eedcea5dbafa38b8815920a8c (patch) | |
| tree | b2f21afae3beb39da13f089c02f0f09bfc4de697 /drivers/ata/libata-scsi.c | |
| parent | ad355b4628a19ba2af30409e13083edda221a5c9 (diff) | |
[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>
Diffstat (limited to 'drivers/ata/libata-scsi.c')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index b39966299e7..79550908adc 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -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: |