diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/scsi/zfcp_scsi.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index e0c5735cf3db..fcc832b73960 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -265,9 +265,14 @@ static void zfcp_scsi_forget_cmnds(struct zfcp_scsi_dev *zsdev, u8 tm_flags) write_unlock_irqrestore(&adapter->abort_lock, flags); } -static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags) +/** + * zfcp_task_mgmt_function() - Synchronously send a task management function. + * @sdev: Pointer to SCSI device to send the task management command to. + * @tm_flags: Task management flags, + * here we only handle %FCP_TMF_TGT_RESET or %FCP_TMF_LUN_RESET. + */ +static int zfcp_task_mgmt_function(struct scsi_device *sdev, u8 tm_flags) { - struct scsi_device *sdev = scpnt->device; struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); @@ -315,12 +320,40 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags) static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt) { - return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET); + struct scsi_device *sdev = scpnt->device; + + return zfcp_task_mgmt_function(sdev, FCP_TMF_LUN_RESET); } static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt) { - return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET); + struct scsi_target *starget = scsi_target(scpnt->device); + struct fc_rport *rport = starget_to_rport(starget); + struct Scsi_Host *shost = rport_to_shost(rport); + struct scsi_device *sdev = NULL, *tmp_sdev; + struct zfcp_adapter *adapter = + (struct zfcp_adapter *)shost->hostdata[0]; + int ret; + + shost_for_each_device(tmp_sdev, shost) { + if (tmp_sdev->id == starget->id) { + sdev = tmp_sdev; + break; + } + } + if (!sdev) { + ret = FAILED; + zfcp_dbf_scsi_eh("tr_nosd", adapter, starget->id, ret); + return ret; + } + + ret = zfcp_task_mgmt_function(sdev, FCP_TMF_TGT_RESET); + + /* release reference from above shost_for_each_device */ + if (sdev) + scsi_device_put(tmp_sdev); + + return ret; } static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt) |