[SCSI] fusion: target reset when drive is being removed

The issuing of the target reset
used in device hot removal case so the
firmware queue is flushed out off outstanding
commands.

Signed-off-by: Eric Moore <Eric.Moore@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 23 insertions, 1 deletions

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 8e77837c07..190bd940bb 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -324,6 +324,7 @@ mptsas_slave_destroy(struct scsi_device *sdev)
         struct sas_rphy *rphy;
         struct mptsas_portinfo *p;
         int i;
+        VirtDevice *vdev;
 
         /*
          * Handle hotplug removal case.
@@ -347,8 +348,29 @@ mptsas_slave_destroy(struct scsi_device *sdev)
  out:
         mutex_unlock(&hd->ioc->sas_topology_mutex);
         /*
-         * TODO: Issue target reset to flush firmware outstanding commands.
+         * Issue target reset to flush firmware outstanding commands.
          */
+        vdev = sdev->hostdata;
+        if (vdev->configured_lun){
+                if (mptscsih_TMHandler(hd,
+                     MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
+                     vdev->bus_id,
+                     vdev->target_id,
+                     0, 0, 5 /* 5 second timeout */)
+                     < 0){
+
+                        /* The TM request failed!
+                         * Fatal error case.
+                         */
+                        printk(MYIOC_s_WARN_FMT
+                       "Error processing TaskMgmt id=%d TARGET_RESET\n",
+                                hd->ioc->name,
+                                vdev->target_id);
+
+                        hd->tmPending = 0;
+                        hd->tmState = TM_STATE_NONE;
+                }
+        }
         mptscsih_slave_destroy(sdev);
 }