[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>

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 8e77837..190bd94 100644 (file)
--- 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);
 }