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| author | Dan Williams <dan.j.williams@intel.com> | 2011-05-24 13:17:58 -0700 |
|---|---|---|
| committer | James Bottomley <jbottomley@parallels.com> | 2011-05-26 22:49:33 -0500 |
| commit | 3673f4bf6a277f4f2944ad153ceb167b340f9ffc (patch) | |
| tree | cdf617316cffcb247c7524e430387e1f906ff987 /drivers/scsi/libsas | |
| parent | 90f1e10d08bad84f8fd15d3469a60d437d4de64f (diff) | |
| download | linux-3673f4bf6a277f4f2944ad153ceb167b340f9ffc.tar.gz linux-3673f4bf6a277f4f2944ad153ceb167b340f9ffc.tar.bz2 linux-3673f4bf6a277f4f2944ad153ceb167b340f9ffc.zip | |
[SCSI] libsas: check dev->gone before submitting sata i/o
Head off doomed-to-fail i/o in sas_queuecommand before sending it down
the ata path.
Before:
sd 7:0:0:0: [sdd] Synchronizing SCSI cache
ata8: no sense translation for status: 0x00
ata8: translated ATA stat/err 0x00/00 to SCSI SK/ASC/ASCQ 0xb/00/00
ata8.00: device reported invalid CHS sector 0
ata8: status=0x00 { }
ata8: no sense translation for status: 0x00
ata8: translated ATA stat/err 0x00/00 to SCSI SK/ASC/ASCQ 0xb/00/00
ata8.00: device reported invalid CHS sector 0
ata8: status=0x00 { }
ata8: no sense translation for status: 0x00
ata8: translated ATA stat/err 0x00/00 to SCSI SK/ASC/ASCQ 0xb/00/00
ata8.00: device reported invalid CHS sector 0
ata8: status=0x00 { }
sd 7:0:0:0: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 7:0:0:0: [sdd] Sense Key : Aborted Command [current] [descriptor]
sd 7:0:0:0: [sdd] Add. Sense: No additional sense information
sd 7:0:0:0: [sdd] Stopping disk
After:
sd 9:0:0:0: [sdd] Synchronizing SCSI cache
sd 9:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 9:0:0:0: [sdd] Stopping disk
sd 9:0:0:0: [sdd] START_STOP FAILED
sd 9:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
This is a cosmetic change as sata i/o can still leak to a gone device,
but this addresses the nominal hotplug case when releasing the target.
Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Diffstat (limited to 'drivers/scsi/libsas')
| -rw-r--r-- | drivers/scsi/libsas/sas_scsi_host.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index f6e189f40917..eeba76cdf774 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -207,6 +207,13 @@ static int sas_queuecommand_lck(struct scsi_cmnd *cmd, struct sas_ha_struct *sas_ha = dev->port->ha; struct sas_task *task; + /* If the device fell off, no sense in issuing commands */ + if (dev->gone) { + cmd->result = DID_BAD_TARGET << 16; + scsi_done(cmd); + goto out; + } + if (dev_is_sata(dev)) { unsigned long flags; @@ -216,13 +223,6 @@ static int sas_queuecommand_lck(struct scsi_cmnd *cmd, goto out; } - /* If the device fell off, no sense in issuing commands */ - if (dev->gone) { - cmd->result = DID_BAD_TARGET << 16; - scsi_done(cmd); - goto out; - } - res = -ENOMEM; task = sas_create_task(cmd, dev, GFP_ATOMIC); if (!task) |