diff options
| author | Kashyap, Desai <kashyap.desai@lsi.com> | 2009-09-23 17:33:14 +0530 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-10-29 13:03:14 -0400 |
| commit | e4e7c7ed3485bc530499158e28539e00d47f9ef2 (patch) | |
| tree | e272b3bc2a42cdc3eeca1a87cd61f08f13a69e61 | |
| parent | 96b681c6ad3f2f5013c0ffc558969ee6ac8c450b (diff) | |
[SCSI] mpt2sas: Return DID_TRANSPORT_DISRUPTED in nexus loss,SCSI_MLQUEUE_DEVICE_BUSY if device is busy
1 Its observed that the OS was sending request to the driver after it had been
put into blocking state, so the driver was modified to return
SCSI_MLQUEUE_DEVICE_BUSY.
2. Driver will return DID_TRANSPORT_DISRUPTED when sdev is haivng nexus loss.
This occurrs when sdev is blocked, between the
MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING and
MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING events.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| -rw-r--r-- | drivers/scsi/mpt2sas/mpt2sas_scsih.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index c20c1e8cb8a7..b5531a251be9 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -2885,7 +2885,7 @@ _scsih_qcmd(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *)) } /* see if we are busy with task managment stuff */ - if (sas_target_priv_data->tm_busy) + if (sas_device_priv_data->block || sas_target_priv_data->tm_busy) return SCSI_MLQUEUE_DEVICE_BUSY; else if (ioc->shost_recovery || ioc->ioc_link_reset_in_progress) return SCSI_MLQUEUE_HOST_BUSY; @@ -3351,10 +3351,9 @@ _scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED: if (sas_device_priv_data->block) { - scmd->result = (DID_BUS_BUSY << 16); - break; + scmd->result = DID_TRANSPORT_DISRUPTED << 16; + goto out; } - case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED: case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED: scmd->result = DID_RESET << 16; |