1 files changed, 83 insertions, 39 deletions

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 182c8e75aaf0..76ae266b07c4 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -431,6 +431,8 @@ static void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt,
         case IBMVFC_TGT_ACTION_DEL_RPORT:
                 break;
         default:
+                if (action == IBMVFC_TGT_ACTION_DEL_RPORT)
+                        tgt->add_rport = 0;
                 tgt->action = action;
                 break;
         }
@@ -483,7 +485,7 @@ static void ibmvfc_set_host_action(struct ibmvfc_host *vhost,
                 switch (vhost->action) {
                 case IBMVFC_HOST_ACTION_INIT_WAIT:
                 case IBMVFC_HOST_ACTION_NONE:
-                case IBMVFC_HOST_ACTION_TGT_ADD:
+                case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
                         vhost->action = action;
                         break;
                 default:
@@ -498,7 +500,6 @@ static void ibmvfc_set_host_action(struct ibmvfc_host *vhost,
         case IBMVFC_HOST_ACTION_TGT_DEL:
         case IBMVFC_HOST_ACTION_QUERY_TGTS:
         case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
-        case IBMVFC_HOST_ACTION_TGT_ADD:
         case IBMVFC_HOST_ACTION_NONE:
         default:
                 vhost->action = action;
@@ -2306,7 +2307,7 @@ static int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
                 done = 1;
         }
 
-        if (vhost->state != IBMVFC_NO_CRQ && vhost->action == IBMVFC_HOST_ACTION_NONE)
+        if (vhost->scan_complete)
                 done = 1;
         spin_unlock_irqrestore(shost->host_lock, flags);
         return done;
@@ -2820,7 +2821,7 @@ static void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt)
                                                 tgt->ids.roles |= FC_PORT_ROLE_FCP_TARGET;
                                         if (parms->service_parms & IBMVFC_PRLI_INITIATOR_FUNC)
                                                 tgt->ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
-                                        ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_ADD_RPORT);
+                                        tgt->add_rport = 1;
                                 } else
                                         ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
                         } else if (prli_rsp[index].retry)
@@ -3660,7 +3661,6 @@ static int __ibmvfc_work_to_do(struct ibmvfc_host *vhost)
                 return 1;
         case IBMVFC_HOST_ACTION_INIT:
         case IBMVFC_HOST_ACTION_ALLOC_TGTS:
-        case IBMVFC_HOST_ACTION_TGT_ADD:
         case IBMVFC_HOST_ACTION_TGT_DEL:
         case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
         case IBMVFC_HOST_ACTION_QUERY:
@@ -3715,25 +3715,26 @@ static void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events)
 static void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt)
 {
         struct ibmvfc_host *vhost = tgt->vhost;
-        struct fc_rport *rport = tgt->rport;
+        struct fc_rport *rport;
         unsigned long flags;
 
-        if (rport) {
-                tgt_dbg(tgt, "Setting rport roles\n");
-                fc_remote_port_rolechg(rport, tgt->ids.roles);
-                spin_lock_irqsave(vhost->host->host_lock, flags);
-                ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
+        tgt_dbg(tgt, "Adding rport\n");
+        rport = fc_remote_port_add(vhost->host, 0, &tgt->ids);
+        spin_lock_irqsave(vhost->host->host_lock, flags);
+
+        if (rport && tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) {
+                tgt_dbg(tgt, "Deleting rport\n");
+                list_del(&tgt->queue);
                 spin_unlock_irqrestore(vhost->host->host_lock, flags);
+                fc_remote_port_delete(rport);
+                del_timer_sync(&tgt->timer);
+                kref_put(&tgt->kref, ibmvfc_release_tgt);
                 return;
         }
 
-        tgt_dbg(tgt, "Adding rport\n");
-        rport = fc_remote_port_add(vhost->host, 0, &tgt->ids);
-        spin_lock_irqsave(vhost->host->host_lock, flags);
-        tgt->rport = rport;
-        ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
         if (rport) {
                 tgt_dbg(tgt, "rport add succeeded\n");
+                tgt->rport = rport;
                 rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff;
                 rport->supported_classes = 0;
                 tgt->target_id = rport->scsi_target_id;
@@ -3811,11 +3812,21 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
 
                 if (vhost->state == IBMVFC_INITIALIZING) {
                         if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) {
-                                ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE);
-                                ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_ADD);
-                                vhost->init_retries = 0;
-                                spin_unlock_irqrestore(vhost->host->host_lock, flags);
-                                scsi_unblock_requests(vhost->host);
+                                if (vhost->reinit) {
+                                        vhost->reinit = 0;
+                                        scsi_block_requests(vhost->host);
+                                        ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY);
+                                        spin_unlock_irqrestore(vhost->host->host_lock, flags);
+                                } else {
+                                        ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE);
+                                        ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
+                                        wake_up(&vhost->init_wait_q);
+                                        schedule_work(&vhost->rport_add_work_q);
+                                        vhost->init_retries = 0;
+                                        spin_unlock_irqrestore(vhost->host->host_lock, flags);
+                                        scsi_unblock_requests(vhost->host);
+                                }
+
                                 return;
                         } else {
                                 ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT);
@@ -3846,24 +3857,6 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
                 if (!ibmvfc_dev_init_to_do(vhost))
                         ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED);
                 break;
-        case IBMVFC_HOST_ACTION_TGT_ADD:
-                list_for_each_entry(tgt, &vhost->targets, queue) {
-                        if (tgt->action == IBMVFC_TGT_ACTION_ADD_RPORT) {
-                                spin_unlock_irqrestore(vhost->host->host_lock, flags);
-                                ibmvfc_tgt_add_rport(tgt);
-                                return;
-                        }
-                }
-
-                if (vhost->reinit && !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) {
-                        vhost->reinit = 0;
-                        scsi_block_requests(vhost->host);
-                        ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY);
-                } else {
-                        ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
-                        wake_up(&vhost->init_wait_q);
-                }
-                break;
         default:
                 break;
         };
@@ -4093,6 +4086,56 @@ nomem:
 }
 
 /**
+ * ibmvfc_rport_add_thread - Worker thread for rport adds
+ * @work:       work struct
+ *
+ **/
+static void ibmvfc_rport_add_thread(struct work_struct *work)
+{
+        struct ibmvfc_host *vhost = container_of(work, struct ibmvfc_host,
+                                                 rport_add_work_q);
+        struct ibmvfc_target *tgt;
+        struct fc_rport *rport;
+        unsigned long flags;
+        int did_work;
+
+        ENTER;
+        spin_lock_irqsave(vhost->host->host_lock, flags);
+        do {
+                did_work = 0;
+                if (vhost->state != IBMVFC_ACTIVE)
+                        break;
+
+                list_for_each_entry(tgt, &vhost->targets, queue) {
+                        if (tgt->add_rport) {
+                                did_work = 1;
+                                tgt->add_rport = 0;
+                                kref_get(&tgt->kref);
+                                rport = tgt->rport;
+                                if (!rport) {
+                                        spin_unlock_irqrestore(vhost->host->host_lock, flags);
+                                        ibmvfc_tgt_add_rport(tgt);
+                                } else if (get_device(&rport->dev)) {
+                                        spin_unlock_irqrestore(vhost->host->host_lock, flags);
+                                        tgt_dbg(tgt, "Setting rport roles\n");
+                                        fc_remote_port_rolechg(rport, tgt->ids.roles);
+                                        put_device(&rport->dev);
+                                }
+
+                                kref_put(&tgt->kref, ibmvfc_release_tgt);
+                                spin_lock_irqsave(vhost->host->host_lock, flags);
+                                break;
+                        }
+                }
+        } while(did_work);
+
+        if (vhost->state == IBMVFC_ACTIVE)
+                vhost->scan_complete = 1;
+        spin_unlock_irqrestore(vhost->host->host_lock, flags);
+        LEAVE;
+}
+
+/**
  * ibmvfc_probe - Adapter hot plug add entry point
  * @vdev:       vio device struct
  * @id: vio device id struct
@@ -4135,6 +4178,7 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
         strcpy(vhost->partition_name, "UNKNOWN");
         init_waitqueue_head(&vhost->work_wait_q);
         init_waitqueue_head(&vhost->init_wait_q);
+        INIT_WORK(&vhost->rport_add_work_q, ibmvfc_rport_add_thread);
 
         if ((rc = ibmvfc_alloc_mem(vhost)))
                 goto free_scsi_host;