[SCSI] lpfc 8.3.37: Provide support for change_queue_type

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 60e5a17..98af07c 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -287,6 +287,26 @@ lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
        return sdev->queue_depth;
 }
 
+/**
+ * lpfc_change_queue_type() - Change a device's scsi tag queuing type
+ * @sdev: Pointer the scsi device whose queue depth is to change
+ * @tag_type: Identifier for queue tag type
+ */
+static int
+lpfc_change_queue_type(struct scsi_device *sdev, int tag_type)
+{
+       if (sdev->tagged_supported) {
+               scsi_set_tag_type(sdev, tag_type);
+               if (tag_type)
+                       scsi_activate_tcq(sdev, sdev->queue_depth);
+               else
+                       scsi_deactivate_tcq(sdev, sdev->queue_depth);
+       } else
+               tag_type = 0;
+
+       return tag_type;
+}
+
 /**
  * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
  * @phba: The Hba for which this call is being executed.
@@ -3972,7 +3992,7 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
                        break;
                }
        } else
-               fcp_cmnd->fcpCntl1 = 0;
+               fcp_cmnd->fcpCntl1 = SIMPLE_Q;
 
        sli4 = (phba->sli_rev == LPFC_SLI_REV4);
 
@@ -5150,6 +5170,7 @@ struct scsi_host_template lpfc_template = {
        .max_sectors            = 0xFFFF,
        .vendor_id              = LPFC_NL_VENDOR_ID,
        .change_queue_depth     = lpfc_change_queue_depth,
+       .change_queue_type      = lpfc_change_queue_type,
 };
 
 struct scsi_host_template lpfc_vport_template = {
@@ -5172,4 +5193,5 @@ struct scsi_host_template lpfc_vport_template = {
        .shost_attrs            = lpfc_vport_attrs,
        .max_sectors            = 0xFFFF,
        .change_queue_depth     = lpfc_change_queue_depth,
+       .change_queue_type      = lpfc_change_queue_type,
 };