]> err.no Git - linux-2.6/blobdiff - drivers/s390/scsi/zfcp_erp.c
[SCSI] zfcp: avoid if (whatever) ; constructs.
[linux-2.6] / drivers / s390 / scsi / zfcp_erp.c
index c1f2d4b14c2b4517071d5e8fc6a8d5358a9b7347..40fa056e2575abcaae08cc25bbc343437d150360 100644 (file)
@@ -179,7 +179,7 @@ static void zfcp_close_fsf(struct zfcp_adapter *adapter)
 static void zfcp_fsf_request_timeout_handler(unsigned long data)
 {
        struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
-       zfcp_erp_adapter_reopen(adapter, 0);
+       zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
 }
 
 void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, unsigned long timeout)
@@ -342,9 +342,9 @@ zfcp_erp_adisc(struct zfcp_port *port)
        adisc->wwpn = fc_host_port_name(adapter->scsi_host);
        adisc->wwnn = fc_host_node_name(adapter->scsi_host);
        adisc->nport_id = fc_host_port_id(adapter->scsi_host);
-       ZFCP_LOG_INFO("ADISC request from s_id 0x%08x to d_id 0x%08x "
+       ZFCP_LOG_INFO("ADISC request from s_id 0x%06x to d_id 0x%06x "
                      "(wwpn=0x%016Lx, wwnn=0x%016Lx, "
-                     "hard_nport_id=0x%08x, nport_id=0x%08x)\n",
+                     "hard_nport_id=0x%06x, nport_id=0x%06x)\n",
                      adisc->nport_id, send_els->d_id, (wwn_t) adisc->wwpn,
                      (wwn_t) adisc->wwnn, adisc->hard_nport_id,
                      adisc->nport_id);
@@ -352,7 +352,7 @@ zfcp_erp_adisc(struct zfcp_port *port)
        retval = zfcp_fsf_send_els(send_els);
        if (retval != 0) {
                ZFCP_LOG_NORMAL("error: initiation of Send ELS failed for port "
-                               "0x%08x on adapter %s\n", send_els->d_id,
+                               "0x%06x on adapter %s\n", send_els->d_id,
                                zfcp_get_busid_by_adapter(adapter));
                goto freemem;
        }
@@ -398,7 +398,7 @@ zfcp_erp_adisc_handler(unsigned long data)
        if (send_els->status != 0) {
                ZFCP_LOG_NORMAL("ELS request rejected/timed out, "
                                "force physical port reopen "
-                               "(adapter %s, port d_id=0x%08x)\n",
+                               "(adapter %s, port d_id=0x%06x)\n",
                                zfcp_get_busid_by_adapter(adapter), d_id);
                debug_text_event(adapter->erp_dbf, 3, "forcreop");
                if (zfcp_erp_port_forced_reopen(port, 0))
@@ -411,9 +411,9 @@ zfcp_erp_adisc_handler(unsigned long data)
 
        adisc = zfcp_sg_to_address(send_els->resp);
 
-       ZFCP_LOG_INFO("ADISC response from d_id 0x%08x to s_id "
-                     "0x%08x (wwpn=0x%016Lx, wwnn=0x%016Lx, "
-                     "hard_nport_id=0x%08x, nport_id=0x%08x)\n",
+       ZFCP_LOG_INFO("ADISC response from d_id 0x%06x to s_id "
+                     "0x%06x (wwpn=0x%016Lx, wwnn=0x%016Lx, "
+                     "hard_nport_id=0x%06x, nport_id=0x%06x)\n",
                      d_id, fc_host_port_id(adapter->scsi_host),
                      (wwn_t) adisc->wwpn, (wwn_t) adisc->wwnn,
                      adisc->hard_nport_id, adisc->nport_id);
@@ -847,8 +847,7 @@ zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *erp_action)
        if (erp_action->fsf_req) {
                /* take lock to ensure that request is not deleted meanwhile */
                spin_lock(&adapter->req_list_lock);
-               if (zfcp_reqlist_ismember(adapter,
-                                           erp_action->fsf_req->req_id)) {
+               if (zfcp_reqlist_find(adapter, erp_action->fsf_req->req_id)) {
                        /* fsf_req still exists */
                        debug_text_event(adapter->erp_dbf, 3, "a_ca_req");
                        debug_event(adapter->erp_dbf, 3, &erp_action->fsf_req,
@@ -1377,7 +1376,7 @@ zfcp_erp_port_failed(struct zfcp_port *port)
 
        if (atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status))
                ZFCP_LOG_NORMAL("port erp failed (adapter %s, "
-                               "port d_id=0x%08x)\n",
+                               "port d_id=0x%06x)\n",
                                zfcp_get_busid_by_port(port), port->d_id);
        else
                ZFCP_LOG_NORMAL("port erp failed (adapter %s, wwpn=0x%016Lx)\n",
@@ -1591,6 +1590,61 @@ zfcp_erp_strategy_check_adapter(struct zfcp_adapter *adapter, int result)
        return result;
 }
 
+struct zfcp_erp_add_work {
+       struct zfcp_unit  *unit;
+       struct work_struct work;
+};
+
+/**
+ * zfcp_erp_scsi_scan
+ * @data: pointer to a struct zfcp_erp_add_work
+ *
+ * Registers a logical unit with the SCSI stack.
+ */
+static void zfcp_erp_scsi_scan(struct work_struct *work)
+{
+       struct zfcp_erp_add_work *p =
+               container_of(work, struct zfcp_erp_add_work, work);
+       struct zfcp_unit *unit = p->unit;
+       struct fc_rport *rport = unit->port->rport;
+       scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
+                        unit->scsi_lun, 0);
+       atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
+       wake_up(&unit->scsi_scan_wq);
+       zfcp_unit_put(unit);
+       kfree(p);
+}
+
+/**
+ * zfcp_erp_schedule_work
+ * @unit: pointer to unit which should be registered with SCSI stack
+ *
+ * Schedules work which registers a unit with the SCSI stack
+ */
+static void
+zfcp_erp_schedule_work(struct zfcp_unit *unit)
+{
+       struct zfcp_erp_add_work *p;
+
+       p = kzalloc(sizeof(*p), GFP_KERNEL);
+       if (!p) {
+               ZFCP_LOG_NORMAL("error: Out of resources. Could not register "
+                               "the FCP-LUN 0x%Lx connected to "
+                               "the port with WWPN 0x%Lx connected to "
+                               "the adapter %s with the SCSI stack.\n",
+                               unit->fcp_lun,
+                               unit->port->wwpn,
+                               zfcp_get_busid_by_unit(unit));
+               return;
+       }
+
+       zfcp_unit_get(unit);
+       atomic_set_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
+       INIT_WORK(&p->work, zfcp_erp_scsi_scan);
+       p->unit = unit;
+       schedule_work(&p->work);
+}
+
 /*
  * function:   
  *
@@ -1633,8 +1687,8 @@ zfcp_erp_strategy_followup_actions(int action,
                break;
 
        case ZFCP_ERP_ACTION_REOPEN_UNIT:
-               if (status == ZFCP_ERP_SUCCEEDED) ;     /* no further action */
-               else
+               /* Nothing to do if status == ZFCP_ERP_SUCCEEDED */
+               if (status != ZFCP_ERP_SUCCEEDED)
                        zfcp_erp_port_reopen_internal(unit->port, 0);
                break;
        }
@@ -1931,6 +1985,10 @@ zfcp_erp_adapter_strategy_generic(struct zfcp_erp_action *erp_action, int close)
  failed_openfcp:
        zfcp_close_fsf(erp_action->adapter);
  failed_qdio:
+       atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK |
+                         ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
+                         ZFCP_STATUS_ADAPTER_XPORT_OK,
+                         &erp_action->adapter->status);
  out:
        return retval;
 }
@@ -2112,6 +2170,9 @@ zfcp_erp_adapter_strategy_open_fsf_xconfig(struct zfcp_erp_action *erp_action)
                sleep *= 2;
        }
 
+       atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
+                         &adapter->status);
+
        if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
                              &adapter->status)) {
                ZFCP_LOG_INFO("error: exchange of configuration data for "
@@ -2401,7 +2462,7 @@ zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *erp_action)
                                retval = ZFCP_ERP_FAILED;
                        }
                } else {
-                       ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%08x -> "
+                       ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%06x -> "
                                       "trying open\n", port->wwpn, port->d_id);
                        retval = zfcp_erp_port_strategy_open_port(erp_action);
                }
@@ -2441,7 +2502,7 @@ zfcp_erp_port_strategy_open_nameserver(struct zfcp_erp_action *erp_action)
        case ZFCP_ERP_STEP_UNINITIALIZED:
        case ZFCP_ERP_STEP_PHYS_PORT_CLOSING:
        case ZFCP_ERP_STEP_PORT_CLOSING:
-               ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%08x -> trying open\n",
+               ZFCP_LOG_DEBUG("port 0x%016Lx has d_id=0x%06x -> trying open\n",
                               port->wwpn, port->d_id);
                retval = zfcp_erp_port_strategy_open_port(erp_action);
                break;
@@ -3092,9 +3153,9 @@ zfcp_erp_action_cleanup(int action, struct zfcp_adapter *adapter,
                    && port->rport) {
                        atomic_set_mask(ZFCP_STATUS_UNIT_REGISTERED,
                                        &unit->status);
-                       scsi_scan_target(&port->rport->dev, 0,
-                                        port->rport->scsi_target_id,
-                                        unit->scsi_lun, 0);
+                       if (atomic_test_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING,
+                                            &unit->status) == 0)
+                               zfcp_erp_schedule_work(unit);
                }
                zfcp_unit_put(unit);
                break;
@@ -3121,7 +3182,7 @@ zfcp_erp_action_cleanup(int action, struct zfcp_adapter *adapter,
                                                zfcp_get_busid_by_port(port),
                                                port->wwpn);
                        else {
-                               scsi_flush_work(adapter->scsi_host);
+                               scsi_target_unblock(&port->rport->dev);
                                port->rport->maxframe_size = port->maxframe_size;
                                port->rport->supported_classes =
                                        port->supported_classes;