Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (53 commits)
  [SCSI] libosd: OSD2r05: on-the-wire changes for latest OSD2 revision 5.
  [SCSI] libosd: OSD2r05: OSD_CRYPTO_KEYID_SIZE will grow 20 => 32 bytes
  [SCSI] libosd: OSD2r05: Prepare for rev5 attribute list changes
  [SCSI] libosd: fix potential ERR_PTR dereference in osd_initiator.c
  [SCSI] mpt2sas : bump driver version to 01.100.02.00
  [SCSI] mpt2sas: fix hotplug event processing
  [SCSI] mpt2sas : release diagnotic buffers prior host reset
  [SCSI] mpt2sas : Broadcast Primative AEN bug fix
  [SCSI] mpt2sas : Identify Dell series-7 adapters at driver load time
  [SCSI] mpt2sas : driver name needs to be in the MPT2IOCINFO ioctl
  [SCSI] mpt2sas : running out of message frames
  [SCSI] mpt2sas : fix oops when firmware sends large sense buffer size
  [SCSI] mpt2sas : the sanity check in base_interrupt needs to be on dword boundary
  [SCSI] mpt2sas : unique ioctl magic number
  [SCSI] fix sign extension with 1.5TB usb-storage LBD=y
  [SCSI] ipr: Fix sleeping function called with interrupts disabled
  [SCSI] fcoe: fip: add multicast filter to receive FIP advertisements.
  [SCSI] libfc: Fix compilation warnings with allmodconfig
  [SCSI] fcoe: fix spelling typos and bad comments
  [SCSI] fcoe: don't export functions that are internal to fcoe
  ...

drivers/infiniband/ulp/iser/iscsi_iser.c

@@ -599,6 +599,7 @@ static struct scsi_host_template iscsi_iser_sht = {
 	.eh_abort_handler       = iscsi_eh_abort,
 	.eh_device_reset_handler= iscsi_eh_device_reset,
 	.eh_target_reset_handler= iscsi_eh_target_reset,
+	.target_alloc		= iscsi_target_alloc,
 	.use_clustering         = DISABLE_CLUSTERING,
 	.proc_name              = "iscsi_iser",
 	.this_id                = -1,

drivers/s390/scsi/zfcp_aux.c

@@ -97,9 +97,7 @@ static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
 	ccw_device_set_online(adapter->ccw_device);
 
 	zfcp_erp_wait(adapter);
-	wait_event(adapter->erp_done_wqh,
-		   !(atomic_read(&unit->status) &
-				ZFCP_STATUS_UNIT_SCSI_WORK_PENDING));
+	flush_work(&unit->scsi_work);
 
 	down(&zfcp_data.config_sema);
 	zfcp_unit_put(unit);
@@ -279,6 +277,7 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun)
 
 	atomic_set(&unit->refcount, 0);
 	init_waitqueue_head(&unit->remove_wq);
+	INIT_WORK(&unit->scsi_work, zfcp_scsi_scan);
 
 	unit->port = port;
 	unit->fcp_lun = fcp_lun;
@@ -525,6 +524,8 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
 
 	atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
 
+	zfcp_fc_nameserver_init(adapter);
+
 	if (!zfcp_adapter_scsi_register(adapter))
 		return 0;
 
@@ -553,7 +554,6 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
 
 	cancel_work_sync(&adapter->scan_work);
 	cancel_work_sync(&adapter->stat_work);
-	cancel_delayed_work_sync(&adapter->nsp.work);
 	zfcp_adapter_scsi_unregister(adapter);
 	sysfs_remove_group(&adapter->ccw_device->dev.kobj,
 			   &zfcp_sysfs_adapter_attrs);
@@ -671,8 +671,7 @@ void zfcp_port_dequeue(struct zfcp_port *port)
 	list_del(&port->list);
 	write_unlock_irq(&zfcp_data.config_lock);
 	if (port->rport)
-		fc_remote_port_delete(port->rport);
-	port->rport = NULL;
+		port->rport->dd_data = NULL;
 	zfcp_adapter_put(port->adapter);
 	sysfs_remove_group(&port->sysfs_device.kobj, &zfcp_sysfs_port_attrs);
 	device_unregister(&port->sysfs_device);

drivers/s390/scsi/zfcp_ccw.c

@@ -108,7 +108,6 @@ static int zfcp_ccw_set_online(struct ccw_device *ccw_device)
 	/* initialize request counter */
 	BUG_ON(!zfcp_reqlist_isempty(adapter));
 	adapter->req_no = 0;
-	zfcp_fc_nameserver_init(adapter);
 
 	zfcp_erp_modify_adapter_status(adapter, "ccsonl1", NULL,
 				       ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);

drivers/s390/scsi/zfcp_cfdc.c

@@ -4,7 +4,7 @@
  * Userspace interface for accessing the
  * Access Control Lists / Control File Data Channel
  *
- * Copyright IBM Corporation 2008
+ * Copyright IBM Corporation 2008, 2009
  */
 
 #define KMSG_COMPONENT "zfcp"
@@ -197,6 +197,7 @@ static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
 		retval = -ENXIO;
 		goto free_buffer;
 	}
+	zfcp_adapter_get(adapter);
 
 	retval = zfcp_cfdc_sg_setup(data->command, fsf_cfdc->sg,
 				    data_user->control_file);

drivers/s390/scsi/zfcp_def.h

@@ -255,7 +255,6 @@ enum zfcp_wka_status {
 /* logical unit status */
 #define ZFCP_STATUS_UNIT_SHARED			0x00000004
 #define ZFCP_STATUS_UNIT_READONLY		0x00000008
-#define ZFCP_STATUS_UNIT_SCSI_WORK_PENDING	0x00000020
 
 /* FSF request status (this does not have a common part) */
 #define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT	0x00000002
@@ -530,6 +529,7 @@ struct zfcp_unit {
 	struct zfcp_erp_action erp_action;     /* pending error recovery */
         atomic_t               erp_counter;
 	struct zfcp_latencies	latencies;
+	struct work_struct	scsi_work;
 };
 
 /* FSF request */

drivers/s390/scsi/zfcp_erp.c

@@ -719,6 +719,7 @@ static void zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *act)
 	zfcp_qdio_close(adapter);
 	zfcp_fsf_req_dismiss_all(adapter);
 	adapter->fsf_req_seq_no = 0;
+	zfcp_fc_wka_port_force_offline(&adapter->nsp);
 	/* all ports and units are closed */
 	zfcp_erp_modify_adapter_status(adapter, "erascl1", NULL,
 				       ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
@@ -1176,48 +1177,6 @@ static void zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
 	}
 }
 
-struct zfcp_erp_add_work {
-	struct zfcp_unit  *unit;
-	struct work_struct work;
-};
-
-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;
-
-	if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
-		scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
-			 scsilun_to_int((struct scsi_lun *)&unit->fcp_lun), 0);
-	atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
-	zfcp_unit_put(unit);
-	wake_up(&unit->port->adapter->erp_done_wqh);
-	kfree(p);
-}
-
-static void zfcp_erp_schedule_work(struct zfcp_unit *unit)
-{
-	struct zfcp_erp_add_work *p;
-
-	p = kzalloc(sizeof(*p), GFP_KERNEL);
-	if (!p) {
-		dev_err(&unit->port->adapter->ccw_device->dev,
-			"Registering unit 0x%016Lx on port 0x%016Lx failed\n",
-			(unsigned long long)unit->fcp_lun,
-			(unsigned long long)unit->port->wwpn);
-		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;
-	if (!queue_work(zfcp_data.work_queue, &p->work))
-		zfcp_unit_put(unit);
-}
-
 static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
 {
 	struct zfcp_adapter *adapter = act->adapter;
@@ -1226,11 +1185,11 @@ static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
 
 	switch (act->action) {
 	case ZFCP_ERP_ACTION_REOPEN_UNIT:
-		flush_work(&port->rport_work);
 		if ((result == ZFCP_ERP_SUCCEEDED) && !unit->device) {
-			if (!(atomic_read(&unit->status) &
-			      ZFCP_STATUS_UNIT_SCSI_WORK_PENDING))
-				zfcp_erp_schedule_work(unit);
+			zfcp_unit_get(unit);
+			if (scsi_queue_work(unit->port->adapter->scsi_host,
+					    &unit->scsi_work) <= 0)
+				zfcp_unit_put(unit);
 		}
 		zfcp_unit_put(unit);
 		break;
@@ -1352,6 +1311,11 @@ static int zfcp_erp_thread(void *data)
 
 	while (!(atomic_read(&adapter->status) &
 		 ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL)) {
+
+		zfcp_rec_dbf_event_thread_lock("erthrd1", adapter);
+		ignore = down_interruptible(&adapter->erp_ready_sem);
+		zfcp_rec_dbf_event_thread_lock("erthrd2", adapter);
+
 		write_lock_irqsave(&adapter->erp_lock, flags);
 		next = adapter->erp_ready_head.next;
 		write_unlock_irqrestore(&adapter->erp_lock, flags);
@@ -1363,10 +1327,6 @@ static int zfcp_erp_thread(void *data)
 			if (zfcp_erp_strategy(act) != ZFCP_ERP_DISMISSED)
 				zfcp_erp_wakeup(adapter);
 		}
-
-		zfcp_rec_dbf_event_thread_lock("erthrd1", adapter);
-		ignore = down_interruptible(&adapter->erp_ready_sem);
-		zfcp_rec_dbf_event_thread_lock("erthrd2", adapter);
 	}
 
 	atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);

drivers/s390/scsi/zfcp_ext.h

@@ -106,6 +106,7 @@ extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
 extern void zfcp_test_link(struct zfcp_port *);
 extern void zfcp_fc_link_test_work(struct work_struct *);
 extern void zfcp_fc_nameserver_init(struct zfcp_adapter *);
+extern void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *);
 
 /* zfcp_fsf.c */
 extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
@@ -158,6 +159,7 @@ extern void zfcp_scsi_rport_work(struct work_struct *);
 extern void zfcp_scsi_schedule_rport_register(struct zfcp_port *);
 extern void zfcp_scsi_schedule_rport_block(struct zfcp_port *);
 extern void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *);
+extern void zfcp_scsi_scan(struct work_struct *);
 
 /* zfcp_sysfs.c */
 extern struct attribute_group zfcp_sysfs_unit_attrs;

drivers/s390/scsi/zfcp_fc.c

@@ -98,13 +98,6 @@ static void zfcp_wka_port_offline(struct work_struct *work)
 	struct zfcp_wka_port *wka_port =
 			container_of(dw, struct zfcp_wka_port, work);
 
-	/* Don't wait forvever. If the wka_port is too busy take it offline
-	   through a new call later */
-	if (!wait_event_timeout(wka_port->completion_wq,
-				atomic_read(&wka_port->refcount) == 0,
-				HZ >> 1))
-		return;
-
 	mutex_lock(&wka_port->mutex);
 	if ((atomic_read(&wka_port->refcount) != 0) ||
 	    (wka_port->status != ZFCP_WKA_PORT_ONLINE))
@@ -142,6 +135,14 @@ void zfcp_fc_nameserver_init(struct zfcp_adapter *adapter)
 	INIT_DELAYED_WORK(&wka_port->work, zfcp_wka_port_offline);
 }
 
+void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka)
+{
+	cancel_delayed_work_sync(&wka->work);
+	mutex_lock(&wka->mutex);
+	wka->status = ZFCP_WKA_PORT_OFFLINE;
+	mutex_unlock(&wka->mutex);
+}
+
 static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
 				   struct fcp_rscn_element *elem)
 {
@@ -372,7 +373,8 @@ static void zfcp_fc_adisc_handler(unsigned long data)
 
 	if (adisc->els.status) {
 		/* request rejected or timed out */
-		zfcp_erp_port_forced_reopen(port, 0, "fcadh_1", NULL);
+		zfcp_erp_port_forced_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
+					    "fcadh_1", NULL);
 		goto out;
 	}
 
@@ -431,11 +433,6 @@ void zfcp_fc_link_test_work(struct work_struct *work)
 		container_of(work, struct zfcp_port, test_link_work);
 	int retval;
 
-	if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_UNBLOCKED)) {
-		zfcp_port_put(port);
-		return; /* port erp is running and will update rport status */
-	}
-
 	zfcp_port_get(port);
 	port->rport_task = RPORT_DEL;
 	zfcp_scsi_rport_work(&port->rport_work);
@@ -542,6 +539,9 @@ static void zfcp_validate_port(struct zfcp_port *port)
 {
 	struct zfcp_adapter *adapter = port->adapter;
 
+	if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC))
+		return;
+
 	atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status);
 
 	if ((port->supported_classes != 0) ||
@@ -602,10 +602,8 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries)
 		if (acc->wwpn == fc_host_port_name(adapter->scsi_host))
 			continue;
 		port = zfcp_get_port_by_wwpn(adapter, acc->wwpn);
-		if (port) {
-			zfcp_port_get(port);
+		if (port)
 			continue;
-		}
 
 		port = zfcp_port_enqueue(adapter, acc->wwpn,
 					 ZFCP_STATUS_COMMON_NOESC, d_id);
@@ -637,7 +635,8 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter)
 	max_entries = chain ? ZFCP_GPN_FT_MAX_ENTRIES : ZFCP_GPN_FT_ENTRIES;
 	max_bytes = chain ? ZFCP_GPN_FT_MAX_SIZE : ZFCP_CT_SIZE_ONE_PAGE;
 
-	if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT)
+	if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT &&
+	    fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
 		return 0;
 
 	ret = zfcp_wka_port_get(&adapter->nsp);

drivers/s390/scsi/zfcp_fsf.c

@@ -172,12 +172,16 @@ static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id,
 					 struct fsf_link_down_info *link_down)
 {
 	struct zfcp_adapter *adapter = req->adapter;
+	unsigned long flags;
 
 	if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
 		return;
 
 	atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
+
+	read_lock_irqsave(&zfcp_data.config_lock, flags);
 	zfcp_scsi_schedule_rports_block(adapter);
+	read_unlock_irqrestore(&zfcp_data.config_lock, flags);
 
 	if (!link_down)
 		goto out;
@@ -645,30 +649,30 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
 	}
 }
 
-static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter)
-	__releases(&adapter->req_q_lock)
-	__acquires(&adapter->req_q_lock)
+static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter)
 {
 	struct zfcp_qdio_queue *req_q = &adapter->req_q;
+
+	spin_lock_bh(&adapter->req_q_lock);
+	if (atomic_read(&req_q->count))
+		return 1;
+	spin_unlock_bh(&adapter->req_q_lock);
+	return 0;
+}
+
+static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter)
+{
 	long ret;
 
-	if (atomic_read(&req_q->count) <= -REQUEST_LIST_SIZE)
-		return -EIO;
-	if (atomic_read(&req_q->count) > 0)
-		return 0;
-
-	atomic_dec(&req_q->count);
 	spin_unlock_bh(&adapter->req_q_lock);
 	ret = wait_event_interruptible_timeout(adapter->request_wq,
-					atomic_read(&req_q->count) >= 0,
-					5 * HZ);
-	spin_lock_bh(&adapter->req_q_lock);
-	atomic_inc(&req_q->count);
-
+			       zfcp_fsf_sbal_check(adapter), 5 * HZ);
 	if (ret > 0)
 		return 0;
 	if (!ret)
 		atomic_inc(&adapter->qdio_outb_full);
+
+	spin_lock_bh(&adapter->req_q_lock);
 	return -EIO;
 }
 
@@ -766,8 +770,9 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
 {
 	struct zfcp_adapter *adapter = req->adapter;
-	unsigned long flags;
-	int idx;
+	unsigned long	     flags;
+	int		     idx;
+	int		     with_qtcb = (req->qtcb != NULL);
 
 	/* put allocated FSF request into hash table */
 	spin_lock_irqsave(&adapter->req_list_lock, flags);
@@ -789,7 +794,7 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
 	}
 
 	/* Don't increase for unsolicited status */
-	if (req->qtcb)
+	if (with_qtcb)
 		adapter->fsf_req_seq_no++;
 	adapter->req_no++;
 
@@ -1253,13 +1258,13 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
 
 	spin_lock_bh(&adapter->req_q_lock);
 	if (zfcp_fsf_req_sbal_get(adapter))
-		goto out;
+		goto out_unlock;
 
 	req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA,
 				  0, NULL);
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
-		goto out;
+		goto out_unlock;
 	}
 
 	sbale = zfcp_qdio_sbale_req(req);
@@ -1278,14 +1283,16 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
 
 	zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
 	retval = zfcp_fsf_req_send(req);
-out:
 	spin_unlock_bh(&adapter->req_q_lock);
 	if (!retval)
 		wait_event(req->completion_wq,
 			   req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
 
 	zfcp_fsf_req_free(req);
+	return retval;
 
+out_unlock:
+	spin_unlock_bh(&adapter->req_q_lock);
 	return retval;
 }
 
@@ -1352,13 +1359,13 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
 
 	spin_lock_bh(&adapter->req_q_lock);
 	if (zfcp_fsf_req_sbal_get(adapter))
-		goto out;
+		goto out_unlock;
 
 	req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0,
 				  NULL);
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
-		goto out;
+		goto out_unlock;
 	}
 
 	if (data)
@@ -1371,14 +1378,18 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
 	req->handler = zfcp_fsf_exchange_port_data_handler;
 	zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
 	retval = zfcp_fsf_req_send(req);
-out:
 	spin_unlock_bh(&adapter->req_q_lock);
+
 	if (!retval)
 		wait_event(req->completion_wq,
 			   req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
 	zfcp_fsf_req_free(req);
 
 	return retval;
+
+out_unlock:
+	spin_unlock_bh(&adapter->req_q_lock);
+	return retval;
 }
 
 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
@@ -2472,8 +2483,6 @@ out:
 
 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
 {
-	if (req->qtcb->header.fsf_status != FSF_GOOD)
-		req->status |= ZFCP_STATUS_FSFREQ_ERROR;
 }
 
 /**

drivers/s390/scsi/zfcp_scsi.c

@@ -171,7 +171,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
 		write_unlock_irqrestore(&adapter->abort_lock, flags);
 		zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL,
 					  old_req_id);
-		return SUCCESS;
+		return FAILED; /* completion could be in progress */
 	}
 	old_req->data = NULL;
 
@@ -486,10 +486,12 @@ static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
  */
 static void zfcp_scsi_dev_loss_tmo_callbk(struct fc_rport *rport)
 {
-	struct zfcp_port *port = rport->dd_data;
+	struct zfcp_port *port;
 
 	write_lock_irq(&zfcp_data.config_lock);
-	port->rport = NULL;
+	port = rport->dd_data;
+	if (port)
+		port->rport = NULL;
 	write_unlock_irq(&zfcp_data.config_lock);
 }
 
@@ -503,9 +505,18 @@ static void zfcp_scsi_dev_loss_tmo_callbk(struct fc_rport *rport)
  */
 static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
 {
-	struct zfcp_port *port = rport->dd_data;
+	struct zfcp_port *port;
 
-	zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL);
+	write_lock_irq(&zfcp_data.config_lock);
+	port = rport->dd_data;
+	if (port)
+		zfcp_port_get(port);
+	write_unlock_irq(&zfcp_data.config_lock);
+
+	if (port) {
+		zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL);
+		zfcp_port_put(port);
+	}
 }
 
 static void zfcp_scsi_rport_register(struct zfcp_port *port)
@@ -534,8 +545,10 @@ static void zfcp_scsi_rport_register(struct zfcp_port *port)
 
 static void zfcp_scsi_rport_block(struct zfcp_port *port)
 {
-	if (port->rport)
-		fc_remote_port_delete(port->rport);
+	struct fc_rport *rport = port->rport;
+
+	if (rport)
+		fc_remote_port_delete(rport);
 }
 
 void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
@@ -583,6 +596,23 @@ void zfcp_scsi_rport_work(struct work_struct *work)
 }
 
 
+void zfcp_scsi_scan(struct work_struct *work)
+{
+	struct zfcp_unit *unit = container_of(work, struct zfcp_unit,
+					      scsi_work);
+	struct fc_rport *rport;
+
+	flush_work(&unit->port->rport_work);
+	rport = unit->port->rport;
+
+	if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
+		scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
+				 scsilun_to_int((struct scsi_lun *)
+						&unit->fcp_lun), 0);
+
+	zfcp_unit_put(unit);
+}
+
 struct fc_function_template zfcp_transport_functions = {
 	.show_starget_port_id = 1,
 	.show_starget_port_name = 1,

drivers/s390/scsi/zfcp_sysfs.c

@@ -254,12 +254,21 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
 
 	write_lock_irq(&zfcp_data.config_lock);
 	unit = zfcp_get_unit_by_lun(port, fcp_lun);
-	if (unit && (atomic_read(&unit->refcount) == 0)) {
-		zfcp_unit_get(unit);
-		atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
-		list_move(&unit->list, &unit_remove_lh);
-	} else
-		unit = NULL;
+	if (unit) {
+		write_unlock_irq(&zfcp_data.config_lock);
+		/* wait for possible timeout during SCSI probe */
+		flush_work(&unit->scsi_work);
+		write_lock_irq(&zfcp_data.config_lock);
+
+		if (atomic_read(&unit->refcount) == 0) {
+			zfcp_unit_get(unit);
+			atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE,
+					&unit->status);
+			list_move(&unit->list, &unit_remove_lh);
+		} else {
+			unit = NULL;
+		}
+	}
 
 	write_unlock_irq(&zfcp_data.config_lock);
 

drivers/scsi/cxgb3i/cxgb3i.h

@@ -34,7 +34,7 @@
 #include "cxgb3i_offload.h"
 #include "cxgb3i_ddp.h"
 
-#define CXGB3I_SCSI_QDEPTH_DFLT	128
+#define CXGB3I_SCSI_HOST_QDEPTH 1024
 #define CXGB3I_MAX_TARGET	CXGB3I_MAX_CONN
 #define CXGB3I_MAX_LUN		512
 #define ISCSI_PDU_NONPAYLOAD_MAX \

drivers/scsi/cxgb3i/cxgb3i_ddp.c

@@ -120,20 +120,26 @@ static void clear_ddp_map(struct cxgb3i_ddp_info *ddp, unsigned int tag,
 }
 
 static inline int ddp_find_unused_entries(struct cxgb3i_ddp_info *ddp,
-					  int start, int max, int count,
+					  unsigned int start, unsigned int max,
+					  unsigned int count,
 					  struct cxgb3i_gather_list *gl)
 {
-	unsigned int i, j;
+	unsigned int i, j, k;
 
+	/* not enough entries */
+	if ((max - start) < count)
+		return -EBUSY;
+
+	max -= count;
 	spin_lock(&ddp->map_lock);
-	for (i = start; i <= max;) {
-		for (j = 0; j < count; j++) {
-			if (ddp->gl_map[i + j])
+	for (i = start; i < max;) {
+		for (j = 0, k = i; j < count; j++, k++) {
+			if (ddp->gl_map[k])
 				break;
 		}
 		if (j == count) {
-			for (j = 0; j < count; j++)
-				ddp->gl_map[i + j] = gl;
+			for (j = 0, k = i; j < count; j++, k++)
+				ddp->gl_map[k] = gl;
 			spin_unlock(&ddp->map_lock);
 			return i;
 		}
@@ -354,7 +360,7 @@ int cxgb3i_ddp_tag_reserve(struct t3cdev *tdev, unsigned int tid,
 	struct cxgb3i_ddp_info *ddp = tdev->ulp_iscsi;
 	struct pagepod_hdr hdr;
 	unsigned int npods;
-	int idx = -1, idx_max;
+	int idx = -1;
 	int err = -ENOMEM;
 	u32 sw_tag = *tagp;
 	u32 tag;
@@ -367,17 +373,17 @@ int cxgb3i_ddp_tag_reserve(struct t3cdev *tdev, unsigned int tid,
 	}
 
 	npods = (gl->nelem + PPOD_PAGES_MAX - 1) >> PPOD_PAGES_SHIFT;
-	idx_max = ddp->nppods - npods + 1;
 
 	if (ddp->idx_last == ddp->nppods)
-		idx = ddp_find_unused_entries(ddp, 0, idx_max, npods, gl);
+		idx = ddp_find_unused_entries(ddp, 0, ddp->nppods, npods, gl);
 	else {
 		idx = ddp_find_unused_entries(ddp, ddp->idx_last + 1,
-					      idx_max, npods, gl);
-		if (idx < 0 && ddp->idx_last >= npods)
+					      ddp->nppods, npods, gl);
+		if (idx < 0 && ddp->idx_last >= npods) {
 			idx = ddp_find_unused_entries(ddp, 0,
-						      ddp->idx_last - npods + 1,
+				min(ddp->idx_last + npods, ddp->nppods),
 						      npods, gl);
+		}
 	}
 	if (idx < 0) {
 		ddp_log_debug("xferlen %u, gl %u, npods %u NO DDP.\n",

drivers/scsi/cxgb3i/cxgb3i_iscsi.c

@@ -876,13 +876,14 @@ static struct scsi_host_template cxgb3i_host_template = {
 	.proc_name		= "cxgb3i",
 	.queuecommand		= iscsi_queuecommand,
 	.change_queue_depth	= iscsi_change_queue_depth,
-	.can_queue		= CXGB3I_SCSI_QDEPTH_DFLT - 1,
+	.can_queue		= CXGB3I_SCSI_HOST_QDEPTH,
 	.sg_tablesize		= SG_ALL,
 	.max_sectors		= 0xFFFF,
-	.cmd_per_lun		= CXGB3I_SCSI_QDEPTH_DFLT,
+	.cmd_per_lun		= ISCSI_DEF_CMD_PER_LUN,
 	.eh_abort_handler	= iscsi_eh_abort,
 	.eh_device_reset_handler = iscsi_eh_device_reset,
 	.eh_target_reset_handler = iscsi_eh_target_reset,
+	.target_alloc		= iscsi_target_alloc,
 	.use_clustering		= DISABLE_CLUSTERING,
 	.this_id		= -1,
 };

drivers/scsi/cxgb3i/cxgb3i_offload.c

@@ -1737,7 +1737,7 @@ int cxgb3i_c3cn_send_pdus(struct s3_conn *c3cn, struct sk_buff *skb)
 		c3cn_tx_debug("c3cn 0x%p, snd %u - %u > %u.\n",
 				c3cn, c3cn->write_seq, c3cn->snd_una,
 				cxgb3_snd_win);
-		err = -EAGAIN;
+		err = -ENOBUFS;
 		goto out_err;
 	}
 
@@ -1775,6 +1775,8 @@ done:
 out_err:
 	if (copied == 0 && err == -EPIPE)
 		copied = c3cn->err ? c3cn->err : -EPIPE;
+	else
+		copied = err;
 	goto done;
 }
 

drivers/scsi/cxgb3i/cxgb3i_pdu.c

@@ -400,17 +400,18 @@ int cxgb3i_conn_xmit_pdu(struct iscsi_task *task)
 		return 0;
 	}
 
-	if (err < 0 && err != -EAGAIN) {
-		kfree_skb(skb);
-		cxgb3i_tx_debug("itt 0x%x, skb 0x%p, len %u/%u, xmit err %d.\n",
-				task->itt, skb, skb->len, skb->data_len, err);
-		iscsi_conn_printk(KERN_ERR, task->conn, "xmit err %d.\n", err);
-		iscsi_conn_failure(task->conn, ISCSI_ERR_XMIT_FAILED);
+	if (err == -EAGAIN || err == -ENOBUFS) {
+		/* reset skb to send when we are called again */
+		tdata->skb = skb;
 		return err;
 	}
-	/* reset skb to send when we are called again */
-	tdata->skb = skb;
-	return -EAGAIN;
+
+	kfree_skb(skb);
+	cxgb3i_tx_debug("itt 0x%x, skb 0x%p, len %u/%u, xmit err %d.\n",
+			task->itt, skb, skb->len, skb->data_len, err);
+	iscsi_conn_printk(KERN_ERR, task->conn, "xmit err %d.\n", err);
+	iscsi_conn_failure(task->conn, ISCSI_ERR_XMIT_FAILED);
+	return err;
 }
 
 int cxgb3i_pdu_init(void)

drivers/scsi/fcoe/fcoe.c

@@ -57,7 +57,7 @@ DEFINE_RWLOCK(fcoe_hostlist_lock);
 DEFINE_TIMER(fcoe_timer, NULL, 0, 0);
 DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu);
 
-/* Function Prototyes */
+/* Function Prototypes */
 static int fcoe_reset(struct Scsi_Host *shost);
 static int fcoe_xmit(struct fc_lport *, struct fc_frame *);
 static int fcoe_rcv(struct sk_buff *, struct net_device *,
@@ -138,7 +138,6 @@ static struct scsi_host_template fcoe_shost_template = {
 /**
  * fcoe_lport_config() - sets up the fc_lport
  * @lp: ptr to the fc_lport
- * @shost: ptr to the parent scsi host
  *
  * Returns: 0 for success
  */
@@ -256,6 +255,7 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev)
 	rtnl_lock();
 	memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
 	dev_unicast_add(fc->real_dev, flogi_maddr, ETH_ALEN);
+	dev_mc_add(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);
 	rtnl_unlock();
 
 	/*
@@ -380,7 +380,7 @@ static int fcoe_if_destroy(struct net_device *netdev)
 	dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);
 	rtnl_unlock();
 
-	/* Free the per-CPU revieve threads */
+	/* Free the per-CPU receive threads */
 	fcoe_percpu_clean(lp);
 
 	/* Free existing skbs */
@@ -720,7 +720,7 @@ static void fcoe_percpu_thread_destroy(unsigned int cpu)
 	}
 #else
 	/*
-	 * This a non-SMP scenario where the singluar Rx thread is
+	 * This a non-SMP scenario where the singular Rx thread is
 	 * being removed. Free all skbs and stop the thread.
 	 */
 	spin_lock_bh(&p->fcoe_rx_list.lock);
@@ -777,7 +777,7 @@ static struct notifier_block fcoe_cpu_notifier = {
  * @skb: the receive skb
  * @dev: associated net device
  * @ptype: context
- * @odldev: last device
+ * @olddev: last device
  *
  * this function will receive the packet and build fc frame and pass it up
  *
@@ -884,7 +884,6 @@ err2:
 	kfree_skb(skb);
 	return -1;
 }
-EXPORT_SYMBOL_GPL(fcoe_rcv);
 
 /**
  * fcoe_start_io() - pass to netdev to start xmit for fcoe
@@ -905,7 +904,7 @@ static inline int fcoe_start_io(struct sk_buff *skb)
 }
 
 /**
- * fcoe_get_paged_crc_eof() - in case we need alloc a page for crc_eof
+ * fcoe_get_paged_crc_eof() - in case we need to alloc a page for crc_eof
  * @skb: the skb to be xmitted
  * @tlen: total len
  *
@@ -947,7 +946,7 @@ static int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen)
 
 /**
  * fcoe_fc_crc() - calculates FC CRC in this fcoe skb
- * @fp: the fc_frame containg data to be checksummed
+ * @fp: the fc_frame containing data to be checksummed
  *
  * This uses crc32() to calculate the crc for fc frame
  * Return   : 32 bit crc
@@ -1011,7 +1010,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
 	wlen = skb->len / FCOE_WORD_TO_BYTE;
 
 	if (!lp->link_up) {
-		kfree(skb);
+		kfree_skb(skb);
 		return 0;
 	}
 
@@ -1062,7 +1061,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
 		cp = NULL;
 	}
 
-	/* adjust skb netowrk/transport offsets to match mac/fcoe/fc */
+	/* adjust skb network/transport offsets to match mac/fcoe/fc */
 	skb_push(skb, elen + hlen);
 	skb_reset_mac_header(skb);
 	skb_reset_network_header(skb);
@@ -1123,7 +1122,6 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(fcoe_xmit);
 
 /**
  * fcoe_percpu_receive_thread() - recv thread per cpu
@@ -1296,17 +1294,16 @@ void fcoe_watchdog(ulong vp)
 
 
 /**
- * fcoe_check_wait_queue() - put the skb into fcoe pending xmit queue
- * @lp: the fc_port for this skb
- * @skb: the associated skb to be xmitted
+ * fcoe_check_wait_queue() - attempt to clear the transmit backlog
+ * @lp: the fc_lport
  *
  * This empties the wait_queue, dequeue the head of the wait_queue queue
  * and calls fcoe_start_io() for each packet, if all skb have been
  * transmitted, return qlen or -1 if a error occurs, then restore
- * wait_queue and  try again later.
+ * wait_queue and try again later.
  *
  * The wait_queue is used when the skb transmit fails. skb will go
- * in the wait_queue which will be emptied by the time function OR
+ * in the wait_queue which will be emptied by the timer function or
  * by the next skb transmit.
  *
  * Returns: 0 for success
@@ -1355,10 +1352,6 @@ out:
  */
 static void fcoe_dev_setup()
 {
-	/*
-	 * here setup a interface specific wd time to
-	 * monitor the link state
-	 */
 	register_netdevice_notifier(&fcoe_notifier);
 }
 
@@ -1437,10 +1430,9 @@ out:
 
 /**
  * fcoe_if_to_netdev() - parse a name buffer to get netdev
- * @ifname: fixed array for output parsed ifname
  * @buffer: incoming buffer to be copied
  *
- * Returns: NULL or ptr to netdeive
+ * Returns: NULL or ptr to net_device
  */
 static struct net_device *fcoe_if_to_netdev(const char *buffer)
 {
@@ -1458,7 +1450,7 @@ static struct net_device *fcoe_if_to_netdev(const char *buffer)
 }
 
 /**
- * fcoe_netdev_to_module_owner() - finds out the nic drive moddule of the netdev
+ * fcoe_netdev_to_module_owner() - finds out the driver module of the netdev
  * @netdev: the target netdev
  *
  * Returns: ptr to the struct module, NULL for failure
@@ -1488,7 +1480,7 @@ fcoe_netdev_to_module_owner(const struct net_device *netdev)
  * Holds the Ethernet driver module by try_module_get() for
  * the corresponding netdev.
  *
- * Returns: 0 for succsss
+ * Returns: 0 for success
  */
 static int fcoe_ethdrv_get(const struct net_device *netdev)
 {
@@ -1510,7 +1502,7 @@ static int fcoe_ethdrv_get(const struct net_device *netdev)
  * Releases the Ethernet driver module by module_put for
  * the corresponding netdev.
  *
- * Returns: 0 for succsss
+ * Returns: 0 for success
  */
 static int fcoe_ethdrv_put(const struct net_device *netdev)
 {
@@ -1528,7 +1520,7 @@ static int fcoe_ethdrv_put(const struct net_device *netdev)
 
 /**
  * fcoe_destroy() - handles the destroy from sysfs
- * @buffer: expcted to be a eth if name
+ * @buffer: expected to be an eth if name
  * @kp: associated kernel param
  *
  * Returns: 0 for success
@@ -1565,7 +1557,7 @@ out_nodev:
 
 /**
  * fcoe_create() - Handles the create call from sysfs
- * @buffer: expcted to be a eth if name
+ * @buffer: expected to be an eth if name
  * @kp: associated kernel param
  *
  * Returns: 0 for success
@@ -1652,7 +1644,6 @@ int fcoe_link_ok(struct fc_lport *lp)
 
 	return rc;
 }
-EXPORT_SYMBOL_GPL(fcoe_link_ok);
 
 /**
  * fcoe_percpu_clean() - Clear the pending skbs for an lport
@@ -1684,7 +1675,6 @@ void fcoe_percpu_clean(struct fc_lport *lp)
 		spin_unlock_bh(&pp->fcoe_rx_list.lock);
 	}
 }
-EXPORT_SYMBOL_GPL(fcoe_percpu_clean);
 
 /**
  * fcoe_clean_pending_queue() - Dequeue a skb and free it
@@ -1705,7 +1695,6 @@ void fcoe_clean_pending_queue(struct fc_lport *lp)
 	}
 	spin_unlock_bh(&fc->fcoe_pending_queue.lock);
 }
-EXPORT_SYMBOL_GPL(fcoe_clean_pending_queue);
 
 /**
  * fcoe_reset() - Resets the fcoe
@@ -1719,11 +1708,10 @@ int fcoe_reset(struct Scsi_Host *shost)
 	fc_lport_reset(lport);
 	return 0;
 }
-EXPORT_SYMBOL_GPL(fcoe_reset);
 
 /**
  * fcoe_hostlist_lookup_softc() - find the corresponding lport by a given device
- * @device: this is currently ptr to net_device
+ * @dev: this is currently ptr to net_device
  *
  * Returns: NULL or the located fcoe_softc
  */
@@ -1757,11 +1745,10 @@ struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev)
 
 	return (fc) ? fc->ctlr.lp : NULL;
 }
-EXPORT_SYMBOL_GPL(fcoe_hostlist_lookup);
 
 /**
  * fcoe_hostlist_add() - Add a lport to lports list
- * @lp: ptr to the fc_lport to badded
+ * @lp: ptr to the fc_lport to be added
  *
  * Returns: 0 for success
  */
@@ -1778,11 +1765,10 @@ int fcoe_hostlist_add(const struct fc_lport *lp)
 	}
 	return 0;
 }
-EXPORT_SYMBOL_GPL(fcoe_hostlist_add);
 
 /**
  * fcoe_hostlist_remove() - remove a lport from lports list
- * @lp: ptr to the fc_lport to badded
+ * @lp: ptr to the fc_lport to be removed
  *
  * Returns: 0 for success
  */
@@ -1798,7 +1784,6 @@ int fcoe_hostlist_remove(const struct fc_lport *lp)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(fcoe_hostlist_remove);
 
 /**
  * fcoe_init() - fcoe module loading initialization

drivers/scsi/fcoe/libfcoe.c

@@ -122,7 +122,7 @@ static void fcoe_ctlr_reset_fcfs(struct fcoe_ctlr *fip)
 }
 
 /**
- * fcoe_ctrl_destroy() - Disable and tear-down the FCoE controller.
+ * fcoe_ctlr_destroy() - Disable and tear-down the FCoE controller.
  * @fip:	FCoE controller.
  *
  * This is called by FCoE drivers before freeing the &fcoe_ctlr.

drivers/scsi/ipr.c

@@ -3654,6 +3654,7 @@ static int ipr_slave_configure(struct scsi_device *sdev)
 {
 	struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
 	struct ipr_resource_entry *res;
+	struct ata_port *ap = NULL;
 	unsigned long lock_flags = 0;
 
 	spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
@@ -3672,12 +3673,16 @@ static int ipr_slave_configure(struct scsi_device *sdev)
 		}
 		if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
 			sdev->allow_restart = 1;
-		if (ipr_is_gata(res) && res->sata_port) {
+		if (ipr_is_gata(res) && res->sata_port)
+			ap = res->sata_port->ap;
+		spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+
+		if (ap) {
 			scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
-			ata_sas_slave_configure(sdev, res->sata_port->ap);
-		} else {
+			ata_sas_slave_configure(sdev, ap);
+		} else
 			scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
-		}
+		return 0;
 	}
 	spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
 	return 0;

drivers/scsi/iscsi_tcp.c

@@ -463,7 +463,7 @@ static int iscsi_sw_tcp_pdu_init(struct iscsi_task *task,
 	}
 
 	if (err) {
-		iscsi_conn_failure(conn, err);
+		/* got invalid offset/len */
 		return -EIO;
 	}
 	return 0;
@@ -851,6 +851,7 @@ static struct scsi_host_template iscsi_sw_tcp_sht = {
 	.use_clustering         = DISABLE_CLUSTERING,
 	.slave_alloc            = iscsi_sw_tcp_slave_alloc,
 	.slave_configure        = iscsi_sw_tcp_slave_configure,
+	.target_alloc		= iscsi_target_alloc,
 	.proc_name		= "iscsi_tcp",
 	.this_id		= -1,
 };