[SCSI] sas_ata: Assign sas_task to scsi_cmnd to enable EH for ATA devices

The SATL should connect the scsi_cmnd to the sas_task (despite the presence
of libata) so that requests to abort scsi_cmnds headed to the ATA device
can be processed by the EH and aborted correctly.  The abort status should
still be propagated from sas -> ata -> scsi.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index e164f58f3859..b6535b073bf1 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -119,6 +119,8 @@ static void sas_ata_task_done(struct sas_task *task)
         }
 
         qc->lldd_task = NULL;
+        if (qc->scsicmd)
+                ASSIGN_SAS_TASK(qc->scsicmd, NULL);
         ata_qc_complete(qc);
         spin_unlock_irqrestore(dev->sata_dev.ap->lock, flags);
 
@@ -184,6 +186,9 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
                 break;
         }
 
+        if (qc->scsicmd)
+                ASSIGN_SAS_TASK(qc->scsicmd, task);
+
         if (sas_ha->lldd_max_execute_num < 2)
                 res = i->dft->lldd_execute_task(task, 1, GFP_ATOMIC);
         else
@@ -193,6 +198,8 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
         if (res) {
                 SAS_DPRINTK("lldd_execute_task returned: %d\n", res);
 
+                if (qc->scsicmd)
+                        ASSIGN_SAS_TASK(qc->scsicmd, NULL);
                 sas_free_task(task);
                 return AC_ERR_SYSTEM;
         }