scsi: drop reason argument from ->change_queue_depth

[firefly-linux-kernel-4.4.55.git] / drivers / target / loopback / tcm_loop.c

diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 340de9d92b15bf28a5c13dff1760d23576957e1e..4d1b7224a7f2559d200ec11aaced60a8d67c4a6c 100644 (file)
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -110,65 +110,6 @@ static struct device_driver tcm_loop_driverfs = {
  */
 struct device *tcm_loop_primary;
 
-/*
- * Copied from drivers/scsi/libfc/fc_fcp.c:fc_change_queue_depth() and
- * drivers/scsi/libiscsi.c:iscsi_change_queue_depth()
- */
-static int tcm_loop_change_queue_depth(
-       struct scsi_device *sdev,
-       int depth,
-       int reason)
-{
-       switch (reason) {
-       case SCSI_QDEPTH_DEFAULT:
-               scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
-               break;
-       case SCSI_QDEPTH_QFULL:
-               scsi_track_queue_full(sdev, depth);
-               break;
-       case SCSI_QDEPTH_RAMP_UP:
-               scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
-               break;
-       default:
-               return -EOPNOTSUPP;
-       }
-       return sdev->queue_depth;
-}
-
-static int tcm_loop_change_queue_type(struct scsi_device *sdev, int tag)
-{
-       if (sdev->tagged_supported) {
-               scsi_set_tag_type(sdev, tag);
-
-               if (tag)
-                       scsi_activate_tcq(sdev, sdev->queue_depth);
-               else
-                       scsi_deactivate_tcq(sdev, sdev->queue_depth);
-       } else
-               tag = 0;
-
-       return tag;
-}
-
-/*
- * Locate the SAM Task Attr from struct scsi_cmnd *
- */
-static int tcm_loop_sam_attr(struct scsi_cmnd *sc)
-{
-       if (sc->device->tagged_supported) {
-               switch (sc->tag) {
-               case HEAD_OF_QUEUE_TAG:
-                       return MSG_HEAD_TAG;
-               case ORDERED_QUEUE_TAG:
-                       return MSG_ORDERED_TAG;
-               default:
-                       break;
-               }
-       }
-
-       return MSG_SIMPLE_TAG;
-}
-
 static void tcm_loop_submission_work(struct work_struct *work)
 {
        struct tcm_loop_cmd *tl_cmd =
@@ -227,7 +168,7 @@ static void tcm_loop_submission_work(struct work_struct *work)
 
        rc = target_submit_cmd_map_sgls(se_cmd, tl_nexus->se_sess, sc->cmnd,
                        &tl_cmd->tl_sense_buf[0], tl_cmd->sc->device->lun,
-                       transfer_length, tcm_loop_sam_attr(sc),
+                       transfer_length, MSG_SIMPLE_TAG,
                        sc->sc_data_direction, 0,
                        scsi_sglist(sc), scsi_sg_count(sc),
                        sgl_bidi, sgl_bidi_count,
@@ -266,7 +207,7 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc)
        }
 
        tl_cmd->sc = sc;
-       tl_cmd->sc_cmd_tag = sc->tag;
+       tl_cmd->sc_cmd_tag = sc->request->tag;
        INIT_WORK(&tl_cmd->work, tcm_loop_submission_work);
        queue_work(tcm_loop_workqueue, &tl_cmd->work);
        return 0;
@@ -370,7 +311,7 @@ static int tcm_loop_abort_task(struct scsi_cmnd *sc)
         */
        tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
        ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
-                                sc->tag, TMR_ABORT_TASK);
+                                sc->request->tag, TMR_ABORT_TASK);
        return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
 }
 
@@ -438,27 +379,13 @@ static int tcm_loop_slave_alloc(struct scsi_device *sd)
        return 0;
 }
 
-static int tcm_loop_slave_configure(struct scsi_device *sd)
-{
-       if (sd->tagged_supported) {
-               scsi_activate_tcq(sd, sd->queue_depth);
-               scsi_adjust_queue_depth(sd, MSG_SIMPLE_TAG,
-                                       sd->host->cmd_per_lun);
-       } else {
-               scsi_adjust_queue_depth(sd, 0,
-                                       sd->host->cmd_per_lun);
-       }
-
-       return 0;
-}
-
 static struct scsi_host_template tcm_loop_driver_template = {
        .show_info              = tcm_loop_show_info,
        .proc_name              = "tcm_loopback",
        .name                   = "TCM_Loopback",
        .queuecommand           = tcm_loop_queuecommand,
-       .change_queue_depth     = tcm_loop_change_queue_depth,
-       .change_queue_type      = tcm_loop_change_queue_type,
+       .change_queue_depth     = scsi_change_queue_depth,
+       .change_queue_type      = scsi_change_queue_type,
        .eh_abort_handler = tcm_loop_abort_task,
        .eh_device_reset_handler = tcm_loop_device_reset,
        .eh_target_reset_handler = tcm_loop_target_reset,
@@ -469,8 +396,9 @@ static struct scsi_host_template tcm_loop_driver_template = {
        .max_sectors            = 0xFFFF,
        .use_clustering         = DISABLE_CLUSTERING,
        .slave_alloc            = tcm_loop_slave_alloc,
-       .slave_configure        = tcm_loop_slave_configure,
        .module                 = THIS_MODULE,
+       .use_blk_tags           = 1,
+       .track_queue_depth      = 1,
 };
 
 static int tcm_loop_driver_probe(struct device *dev)
@@ -960,8 +888,7 @@ static int tcm_loop_port_link(
                                struct tcm_loop_tpg, tl_se_tpg);
        struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
 
-       atomic_inc(&tl_tpg->tl_tpg_port_count);
-       smp_mb__after_atomic();
+       atomic_inc_mb(&tl_tpg->tl_tpg_port_count);
        /*
         * Add Linux/SCSI struct scsi_device by HCTL
         */
@@ -995,8 +922,7 @@ static void tcm_loop_port_unlink(
        scsi_remove_device(sd);
        scsi_device_put(sd);
 
-       atomic_dec(&tl_tpg->tl_tpg_port_count);
-       smp_mb__after_atomic();
+       atomic_dec_mb(&tl_tpg->tl_tpg_port_count);
 
        pr_debug("TCM_Loop_ConfigFS: Port Unlink Successful\n");
 }