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isci: Make sure all TCs are terminated and cleaned in LUN reset.

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In the libsas error path, SATA disks require extra handling in
libata to recover operation.  However, libsas expects to be able
to immediately recover all outstanding I/O once the error handler
escalation stops.  This patch fixes the condition where the libata
error handler is scheduled for operation but libsas has already
deleted the outstanding sas_tasks.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Jeff Skirvin 2012-03-08 22:42:00 -08:00 committed by Dan Williams
parent 9608b6408e
commit 08c031e4e3
1 changed files with 8 additions and 6 deletions
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14
drivers/scsi/isci/task.c
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@ -439,16 +439,18 @@ int isci_task_lu_reset(struct domain_device *dev, u8 *lun)
goto out;
}
/* Suspend the RNC, kill all TCs */
if (isci_remote_device_suspend_terminate(ihost, idev, NULL)
!= SCI_SUCCESS) {
/* The suspend/terminate only fails if isci_get_device fails */
ret = TMF_RESP_FUNC_FAILED;
goto out;
}
/* All pending I/Os have been terminated and cleaned up. */
if (dev_is_sata(dev)) {
sas_ata_schedule_reset(dev);
ret = TMF_RESP_FUNC_COMPLETE;
} else {
/* Suspend the RNC, kill all TCs */
if (isci_remote_device_suspend_terminate(ihost, idev, NULL)
!= SCI_SUCCESS) {
ret = TMF_RESP_FUNC_FAILED;
goto out;
}
/* Send the task management part of the reset. */
ret = isci_task_send_lu_reset_sas(ihost, idev, lun);
}