1 files changed, 370 insertions, 417 deletions

diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index e3dbeda9717..c82fe65c412 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -3,7 +3,7 @@
  *
  * Error Recovery Procedures (ERP).
  *
- * Copyright IBM Corporation 2002, 2010
+ * Copyright IBM Corp. 2002, 2010
  */
 
 #define KMSG_COMPONENT "zfcp"
@@ -21,6 +21,7 @@ enum zfcp_erp_act_flags {
 	ZFCP_STATUS_ERP_DISMISSING	= 0x00100000,
 	ZFCP_STATUS_ERP_DISMISSED	= 0x00200000,
 	ZFCP_STATUS_ERP_LOWMEM		= 0x00400000,
+	ZFCP_STATUS_ERP_NO_REF		= 0x00800000,
 };
 
 enum zfcp_erp_steps {
@@ -29,12 +30,12 @@ enum zfcp_erp_steps {
 	ZFCP_ERP_STEP_PHYS_PORT_CLOSING	= 0x0010,
 	ZFCP_ERP_STEP_PORT_CLOSING	= 0x0100,
 	ZFCP_ERP_STEP_PORT_OPENING	= 0x0800,
-	ZFCP_ERP_STEP_UNIT_CLOSING	= 0x1000,
-	ZFCP_ERP_STEP_UNIT_OPENING	= 0x2000,
+	ZFCP_ERP_STEP_LUN_CLOSING	= 0x1000,
+	ZFCP_ERP_STEP_LUN_OPENING	= 0x2000,
 };
 
 enum zfcp_erp_act_type {
-	ZFCP_ERP_ACTION_REOPEN_UNIT        = 1,
+	ZFCP_ERP_ACTION_REOPEN_LUN         = 1,
 	ZFCP_ERP_ACTION_REOPEN_PORT	   = 2,
 	ZFCP_ERP_ACTION_REOPEN_PORT_FORCED = 3,
 	ZFCP_ERP_ACTION_REOPEN_ADAPTER     = 4,
@@ -56,9 +57,8 @@ enum zfcp_erp_act_result {
 
 static void zfcp_erp_adapter_block(struct zfcp_adapter *adapter, int mask)
 {
-	zfcp_erp_modify_adapter_status(adapter, "erablk1", NULL,
-				       ZFCP_STATUS_COMMON_UNBLOCKED | mask,
-				       ZFCP_CLEAR);
+	zfcp_erp_clear_adapter_status(adapter,
+				       ZFCP_STATUS_COMMON_UNBLOCKED | mask);
 }
 
 static int zfcp_erp_action_exists(struct zfcp_erp_action *act)
@@ -76,9 +76,9 @@ static void zfcp_erp_action_ready(struct zfcp_erp_action *act)
 	struct zfcp_adapter *adapter = act->adapter;
 
 	list_move(&act->list, &act->adapter->erp_ready_head);
-	zfcp_dbf_rec_action("erardy1", act);
+	zfcp_dbf_rec_run("erardy1", act);
 	wake_up(&adapter->erp_ready_wq);
-	zfcp_dbf_rec_thread("erardy2", adapter->dbf);
+	zfcp_dbf_rec_run("erardy2", act);
 }
 
 static void zfcp_erp_action_dismiss(struct zfcp_erp_action *act)
@@ -88,23 +88,26 @@ static void zfcp_erp_action_dismiss(struct zfcp_erp_action *act)
 		zfcp_erp_action_ready(act);
 }
 
-static void zfcp_erp_action_dismiss_unit(struct zfcp_unit *unit)
+static void zfcp_erp_action_dismiss_lun(struct scsi_device *sdev)
 {
-	if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
-		zfcp_erp_action_dismiss(&unit->erp_action);
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+
+	if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
+		zfcp_erp_action_dismiss(&zfcp_sdev->erp_action);
 }
 
 static void zfcp_erp_action_dismiss_port(struct zfcp_port *port)
 {
-	struct zfcp_unit *unit;
+	struct scsi_device *sdev;
 
 	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
 		zfcp_erp_action_dismiss(&port->erp_action);
 	else {
-		read_lock(&port->unit_list_lock);
-		list_for_each_entry(unit, &port->unit_list, list)
-			zfcp_erp_action_dismiss_unit(unit);
-		read_unlock(&port->unit_list_lock);
+		spin_lock(port->adapter->scsi_host->host_lock);
+		__shost_for_each_device(sdev, port->adapter->scsi_host)
+			if (sdev_to_zfcp(sdev)->port == port)
+				zfcp_erp_action_dismiss_lun(sdev);
+		spin_unlock(port->adapter->scsi_host->host_lock);
 	}
 }
 
@@ -124,15 +127,17 @@ static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter)
 
 static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter,
 				 struct zfcp_port *port,
-				 struct zfcp_unit *unit)
+				 struct scsi_device *sdev)
 {
 	int need = want;
-	int u_status, p_status, a_status;
+	int l_status, p_status, a_status;
+	struct zfcp_scsi_dev *zfcp_sdev;
 
 	switch (want) {
-	case ZFCP_ERP_ACTION_REOPEN_UNIT:
-		u_status = atomic_read(&unit->status);
-		if (u_status & ZFCP_STATUS_COMMON_ERP_INUSE)
+	case ZFCP_ERP_ACTION_REOPEN_LUN:
+		zfcp_sdev = sdev_to_zfcp(sdev);
+		l_status = atomic_read(&zfcp_sdev->status);
+		if (l_status & ZFCP_STATUS_COMMON_ERP_INUSE)
 			return 0;
 		p_status = atomic_read(&port->status);
 		if (!(p_status & ZFCP_STATUS_COMMON_RUNNING) ||
@@ -141,15 +146,21 @@ static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter,
 		if (!(p_status & ZFCP_STATUS_COMMON_UNBLOCKED))
 			need = ZFCP_ERP_ACTION_REOPEN_PORT;
 		/* fall through */
-	case ZFCP_ERP_ACTION_REOPEN_PORT:
 	case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
 		p_status = atomic_read(&port->status);
+		if (!(p_status & ZFCP_STATUS_COMMON_OPEN))
+			need = ZFCP_ERP_ACTION_REOPEN_PORT;
+		/* fall through */
+	case ZFCP_ERP_ACTION_REOPEN_PORT:
+		p_status = atomic_read(&port->status);
 		if (p_status & ZFCP_STATUS_COMMON_ERP_INUSE)
 			return 0;
 		a_status = atomic_read(&adapter->status);
 		if (!(a_status & ZFCP_STATUS_COMMON_RUNNING) ||
 		      a_status & ZFCP_STATUS_COMMON_ERP_FAILED)
 			return 0;
+		if (p_status & ZFCP_STATUS_COMMON_NOESC)
+			return need;
 		if (!(a_status & ZFCP_STATUS_COMMON_UNBLOCKED))
 			need = ZFCP_ERP_ACTION_REOPEN_ADAPTER;
 		/* fall through */
@@ -165,22 +176,29 @@ static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter,
 	return need;
 }
 
-static struct zfcp_erp_action *zfcp_erp_setup_act(int need,
+static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status,
 						  struct zfcp_adapter *adapter,
 						  struct zfcp_port *port,
-						  struct zfcp_unit *unit)
+						  struct scsi_device *sdev)
 {
 	struct zfcp_erp_action *erp_action;
-	u32 status = 0;
+	struct zfcp_scsi_dev *zfcp_sdev;
 
 	switch (need) {
-	case ZFCP_ERP_ACTION_REOPEN_UNIT:
-		if (!get_device(&unit->dev))
-			return NULL;
-		atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status);
-		erp_action = &unit->erp_action;
-		if (!(atomic_read(&unit->status) & ZFCP_STATUS_COMMON_RUNNING))
-			status = ZFCP_STATUS_ERP_CLOSE_ONLY;
+	case ZFCP_ERP_ACTION_REOPEN_LUN:
+		zfcp_sdev = sdev_to_zfcp(sdev);
+		if (!(act_status & ZFCP_STATUS_ERP_NO_REF))
+			if (scsi_device_get(sdev))
+				return NULL;
+		atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
+				&zfcp_sdev->status);
+		erp_action = &zfcp_sdev->erp_action;
+		memset(erp_action, 0, sizeof(struct zfcp_erp_action));
+		erp_action->port = port;
+		erp_action->sdev = sdev;
+		if (!(atomic_read(&zfcp_sdev->status) &
+		      ZFCP_STATUS_COMMON_RUNNING))
+			act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY;
 		break;
 
 	case ZFCP_ERP_ACTION_REOPEN_PORT:
@@ -190,8 +208,10 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need,
 		zfcp_erp_action_dismiss_port(port);
 		atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status);
 		erp_action = &port->erp_action;
+		memset(erp_action, 0, sizeof(struct zfcp_erp_action));
+		erp_action->port = port;
 		if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_RUNNING))
-			status = ZFCP_STATUS_ERP_CLOSE_ONLY;
+			act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY;
 		break;
 
 	case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
@@ -199,66 +219,65 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need,
 		zfcp_erp_action_dismiss_adapter(adapter);
 		atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status);
 		erp_action = &adapter->erp_action;
+		memset(erp_action, 0, sizeof(struct zfcp_erp_action));
 		if (!(atomic_read(&adapter->status) &
 		      ZFCP_STATUS_COMMON_RUNNING))
-			status = ZFCP_STATUS_ERP_CLOSE_ONLY;
+			act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY;
 		break;
 
 	default:
 		return NULL;
 	}
 
-	memset(erp_action, 0, sizeof(struct zfcp_erp_action));
 	erp_action->adapter = adapter;
-	erp_action->port = port;
-	erp_action->unit = unit;
 	erp_action->action = need;
-	erp_action->status = status;
+	erp_action->status = act_status;
 
 	return erp_action;
 }
 
 static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
 				   struct zfcp_port *port,
-				   struct zfcp_unit *unit, char *id, void *ref)
+				   struct scsi_device *sdev,
+				   char *id, u32 act_status)
 {
 	int retval = 1, need;
-	struct zfcp_erp_action *act = NULL;
+	struct zfcp_erp_action *act;
 
 	if (!adapter->erp_thread)
 		return -EIO;
 
-	need = zfcp_erp_required_act(want, adapter, port, unit);
+	need = zfcp_erp_required_act(want, adapter, port, sdev);
 	if (!need)
 		goto out;
 
-	atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING, &adapter->status);
-	act = zfcp_erp_setup_act(need, adapter, port, unit);
+	act = zfcp_erp_setup_act(need, act_status, adapter, port, sdev);
 	if (!act)
 		goto out;
+	atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_PENDING, &adapter->status);
 	++adapter->erp_total_count;
 	list_add_tail(&act->list, &adapter->erp_ready_head);
 	wake_up(&adapter->erp_ready_wq);
-	zfcp_dbf_rec_thread("eracte1", adapter->dbf);
 	retval = 0;
  out:
-	zfcp_dbf_rec_trigger(id, ref, want, need, act, adapter, port, unit);
+	zfcp_dbf_rec_trig(id, adapter, port, sdev, want, need);
 	return retval;
 }
 
 static int _zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter,
-				    int clear_mask, char *id, void *ref)
+				    int clear_mask, char *id)
 {
 	zfcp_erp_adapter_block(adapter, clear_mask);
 	zfcp_scsi_schedule_rports_block(adapter);
 
 	/* ensure propagation of failed status to new devices */
 	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
-		zfcp_erp_adapter_failed(adapter, "erareo1", NULL);
+		zfcp_erp_set_adapter_status(adapter,
+					    ZFCP_STATUS_COMMON_ERP_FAILED);
 		return -EIO;
 	}
 	return zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER,
-				       adapter, NULL, NULL, id, ref);
+				       adapter, NULL, NULL, id, 0);
 }
 
 /**
@@ -266,10 +285,8 @@ static int _zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter,
  * @adapter: Adapter to reopen.
  * @clear: Status flags to clear.
  * @id: Id for debug trace event.
- * @ref: Reference for debug trace event.
  */
-void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear,
-			     char *id, void *ref)
+void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear, char *id)
 {
 	unsigned long flags;
 
@@ -278,10 +295,11 @@ void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear,
 
 	write_lock_irqsave(&adapter->erp_lock, flags);
 	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
-		zfcp_erp_adapter_failed(adapter, "erareo1", NULL);
+		zfcp_erp_set_adapter_status(adapter,
+					    ZFCP_STATUS_COMMON_ERP_FAILED);
 	else
 		zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER, adapter,
-					NULL, NULL, id, ref);
+					NULL, NULL, id, 0);
 	write_unlock_irqrestore(&adapter->erp_lock, flags);
 }
 
@@ -290,13 +308,12 @@ void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear,
  * @adapter: Adapter to shut down.
  * @clear: Status flags to clear.
  * @id: Id for debug trace event.
- * @ref: Reference for debug trace event.
  */
 void zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear,
-			       char *id, void *ref)
+			       char *id)
 {
 	int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
-	zfcp_erp_adapter_reopen(adapter, clear | flags, id, ref);
+	zfcp_erp_adapter_reopen(adapter, clear | flags, id);
 }
 
 /**
@@ -304,38 +321,21 @@ void zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear,
  * @port: Port to shut down.
  * @clear: Status flags to clear.
  * @id: Id for debug trace event.
- * @ref: Reference for debug trace event.
- */
-void zfcp_erp_port_shutdown(struct zfcp_port *port, int clear, char *id,
-			    void *ref)
-{
-	int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
-	zfcp_erp_port_reopen(port, clear | flags, id, ref);
-}
-
-/**
- * zfcp_erp_unit_shutdown - Shutdown unit
- * @unit: Unit to shut down.
- * @clear: Status flags to clear.
- * @id: Id for debug trace event.
- * @ref: Reference for debug trace event.
  */
-void zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear, char *id,
-			    void *ref)
+void zfcp_erp_port_shutdown(struct zfcp_port *port, int clear, char *id)
 {
 	int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
-	zfcp_erp_unit_reopen(unit, clear | flags, id, ref);
+	zfcp_erp_port_reopen(port, clear | flags, id);
 }
 
 static void zfcp_erp_port_block(struct zfcp_port *port, int clear)
 {
-	zfcp_erp_modify_port_status(port, "erpblk1", NULL,
-				    ZFCP_STATUS_COMMON_UNBLOCKED | clear,
-				    ZFCP_CLEAR);
+	zfcp_erp_clear_port_status(port,
+				    ZFCP_STATUS_COMMON_UNBLOCKED | clear);
 }
 
-static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port,
-					 int clear, char *id, void *ref)
+static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear,
+					 char *id)
 {
 	zfcp_erp_port_block(port, clear);
 	zfcp_scsi_schedule_rport_block(port);
@@ -344,136 +344,171 @@ static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port,
 		return;
 
 	zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT_FORCED,
-				port->adapter, port, NULL, id, ref);
+				port->adapter, port, NULL, id, 0);
 }
 
 /**
  * zfcp_erp_port_forced_reopen - Forced close of port and open again
  * @port: Port to force close and to reopen.
+ * @clear: Status flags to clear.
  * @id: Id for debug trace event.
- * @ref: Reference for debug trace event.
  */
-void zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, char *id,
-				 void *ref)
+void zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, char *id)
 {
 	unsigned long flags;
 	struct zfcp_adapter *adapter = port->adapter;
 
 	write_lock_irqsave(&adapter->erp_lock, flags);
-	_zfcp_erp_port_forced_reopen(port, clear, id, ref);
+	_zfcp_erp_port_forced_reopen(port, clear, id);
 	write_unlock_irqrestore(&adapter->erp_lock, flags);
 }
 
-static int _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id,
-				 void *ref)
+static int _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id)
 {
 	zfcp_erp_port_block(port, clear);
 	zfcp_scsi_schedule_rport_block(port);
 
 	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
 		/* ensure propagation of failed status to new devices */
-		zfcp_erp_port_failed(port, "erpreo1", NULL);
+		zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ERP_FAILED);
 		return -EIO;
 	}
 
 	return zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT,
-				       port->adapter, port, NULL, id, ref);
+				       port->adapter, port, NULL, id, 0);
 }
 
 /**
  * zfcp_erp_port_reopen - trigger remote port recovery
  * @port: port to recover
  * @clear_mask: flags in port status to be cleared
+ * @id: Id for debug trace event.
  *
  * Returns 0 if recovery has been triggered, < 0 if not.
  */
-int zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id, void *ref)
+int zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id)
 {
 	int retval;
 	unsigned long flags;
 	struct zfcp_adapter *adapter = port->adapter;
 
 	write_lock_irqsave(&adapter->erp_lock, flags);
-	retval = _zfcp_erp_port_reopen(port, clear, id, ref);
+	retval = _zfcp_erp_port_reopen(port, clear, id);
 	write_unlock_irqrestore(&adapter->erp_lock, flags);
 
 	return retval;
 }
 
-static void zfcp_erp_unit_block(struct zfcp_unit *unit, int clear_mask)
+static void zfcp_erp_lun_block(struct scsi_device *sdev, int clear_mask)
 {
-	zfcp_erp_modify_unit_status(unit, "erublk1", NULL,
-				    ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask,
-				    ZFCP_CLEAR);
+	zfcp_erp_clear_lun_status(sdev,
+				  ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask);
 }
 
-static void _zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, char *id,
-				  void *ref)
+static void _zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id,
+				 u32 act_status)
 {
-	struct zfcp_adapter *adapter = unit->port->adapter;
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+	struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
 
-	zfcp_erp_unit_block(unit, clear);
+	zfcp_erp_lun_block(sdev, clear);
 
-	if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
+	if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
 		return;
 
-	zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_UNIT,
-				adapter, unit->port, unit, id, ref);
+	zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_LUN, adapter,
+				zfcp_sdev->port, sdev, id, act_status);
 }
 
 /**
- * zfcp_erp_unit_reopen - initiate reopen of a unit
- * @unit: unit to be reopened
- * @clear_mask: specifies flags in unit status to be cleared
+ * zfcp_erp_lun_reopen - initiate reopen of a LUN
+ * @sdev: SCSI device / LUN to be reopened
+ * @clear_mask: specifies flags in LUN status to be cleared
+ * @id: Id for debug trace event.
+ *
  * Return: 0 on success, < 0 on error
  */
-void zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, char *id,
-			  void *ref)
+void zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id)
 {
 	unsigned long flags;
-	struct zfcp_port *port = unit->port;
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+	struct zfcp_port *port = zfcp_sdev->port;
 	struct zfcp_adapter *adapter = port->adapter;
 
 	write_lock_irqsave(&adapter->erp_lock, flags);
-	_zfcp_erp_unit_reopen(unit, clear, id, ref);
+	_zfcp_erp_lun_reopen(sdev, clear, id, 0);
 	write_unlock_irqrestore(&adapter->erp_lock, flags);
 }
 
-static int status_change_set(unsigned long mask, atomic_t *status)
+/**
+ * zfcp_erp_lun_shutdown - Shutdown LUN
+ * @sdev: SCSI device / LUN to shut down.
+ * @clear: Status flags to clear.
+ * @id: Id for debug trace event.
+ */
+void zfcp_erp_lun_shutdown(struct scsi_device *sdev, int clear, char *id)
 {
-	return (atomic_read(status) ^ mask) & mask;
+	int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
+	zfcp_erp_lun_reopen(sdev, clear | flags, id);
 }
 
-static int status_change_clear(unsigned long mask, atomic_t *status)
+/**
+ * zfcp_erp_lun_shutdown_wait - Shutdown LUN and wait for erp completion
+ * @sdev: SCSI device / LUN to shut down.
+ * @id: Id for debug trace event.
+ *
+ * Do not acquire a reference for the LUN when creating the ERP
+ * action. It is safe, because this function waits for the ERP to
+ * complete first. This allows to shutdown the LUN, even when the SCSI
+ * device is in the state SDEV_DEL when scsi_device_get will fail.
+ */
+void zfcp_erp_lun_shutdown_wait(struct scsi_device *sdev, char *id)
 {
-	return atomic_read(status) & mask;
+	unsigned long flags;
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+	struct zfcp_port *port = zfcp_sdev->port;
+	struct zfcp_adapter *adapter = port->adapter;
+	int clear = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
+
+	write_lock_irqsave(&adapter->erp_lock, flags);
+	_zfcp_erp_lun_reopen(sdev, clear, id, ZFCP_STATUS_ERP_NO_REF);
+	write_unlock_irqrestore(&adapter->erp_lock, flags);
+
+	zfcp_erp_wait(adapter);
+}
+
+static int status_change_set(unsigned long mask, atomic_t *status)
+{
+	return (atomic_read(status) ^ mask) & mask;
 }
 
 static void zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
 {
 	if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status))
-		zfcp_dbf_rec_adapter("eraubl1", NULL, adapter->dbf);
+		zfcp_dbf_rec_run("eraubl1", &adapter->erp_action);
 	atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status);
 }
 
 static void zfcp_erp_port_unblock(struct zfcp_port *port)
 {
 	if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status))
-		zfcp_dbf_rec_port("erpubl1", NULL, port);
+		zfcp_dbf_rec_run("erpubl1", &port->erp_action);
 	atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status);
 }
 
-static void zfcp_erp_unit_unblock(struct zfcp_unit *unit)
+static void zfcp_erp_lun_unblock(struct scsi_device *sdev)
 {
-	if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status))
-		zfcp_dbf_rec_unit("eruubl1", NULL, unit);
-	atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status);
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+
+	if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &zfcp_sdev->status))
+		zfcp_dbf_rec_run("erlubl1", &sdev_to_zfcp(sdev)->erp_action);
+	atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &zfcp_sdev->status);
 }
 
 static void zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action)
 {
 	list_move(&erp_action->list, &erp_action->adapter->erp_running_head);
-	zfcp_dbf_rec_action("erator1", erp_action);
+	zfcp_dbf_rec_run("erator1", erp_action);
 }
 
 static void zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *act)
@@ -490,11 +525,11 @@ static void zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *act)
 		if (act->status & (ZFCP_STATUS_ERP_DISMISSED |
 				   ZFCP_STATUS_ERP_TIMEDOUT)) {
 			req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
-			zfcp_dbf_rec_action("erscf_1", act);
+			zfcp_dbf_rec_run("erscf_1", act);
 			req->erp_action = NULL;
 		}
 		if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
-			zfcp_dbf_rec_action("erscf_2", act);
+			zfcp_dbf_rec_run("erscf_2", act);
 		if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED)
 			act->fsf_req_id = 0;
 	} else
@@ -545,41 +580,42 @@ static void zfcp_erp_strategy_memwait(struct zfcp_erp_action *erp_action)
 }
 
 static void _zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter,
-				      int clear, char *id, void *ref)
+				      int clear, char *id)
 {
 	struct zfcp_port *port;
 
 	read_lock(&adapter->port_list_lock);
 	list_for_each_entry(port, &adapter->port_list, list)
-		_zfcp_erp_port_reopen(port, clear, id, ref);
+		_zfcp_erp_port_reopen(port, clear, id);
 	read_unlock(&adapter->port_list_lock);
 }
 
-static void _zfcp_erp_unit_reopen_all(struct zfcp_port *port, int clear,
-				      char *id, void *ref)
+static void _zfcp_erp_lun_reopen_all(struct zfcp_port *port, int clear,
+				     char *id)
 {
-	struct zfcp_unit *unit;
+	struct scsi_device *sdev;
 
-	read_lock(&port->unit_list_lock);
-	list_for_each_entry(unit, &port->unit_list, list)
-		_zfcp_erp_unit_reopen(unit, clear, id, ref);
-	read_unlock(&port->unit_list_lock);
+	spin_lock(port->adapter->scsi_host->host_lock);
+	__shost_for_each_device(sdev, port->adapter->scsi_host)
+		if (sdev_to_zfcp(sdev)->port == port)
+			_zfcp_erp_lun_reopen(sdev, clear, id, 0);
+	spin_unlock(port->adapter->scsi_host->host_lock);
 }
 
 static void zfcp_erp_strategy_followup_failed(struct zfcp_erp_action *act)
 {
 	switch (act->action) {
 	case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
-		_zfcp_erp_adapter_reopen(act->adapter, 0, "ersff_1", NULL);
+		_zfcp_erp_adapter_reopen(act->adapter, 0, "ersff_1");
 		break;
 	case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
-		_zfcp_erp_port_forced_reopen(act->port, 0, "ersff_2", NULL);
+		_zfcp_erp_port_forced_reopen(act->port, 0, "ersff_2");
 		break;
 	case ZFCP_ERP_ACTION_REOPEN_PORT:
-		_zfcp_erp_port_reopen(act->port, 0, "ersff_3", NULL);
+		_zfcp_erp_port_reopen(act->port, 0, "ersff_3");
 		break;
-	case ZFCP_ERP_ACTION_REOPEN_UNIT:
-		_zfcp_erp_unit_reopen(act->unit, 0, "ersff_4", NULL);
+	case ZFCP_ERP_ACTION_REOPEN_LUN:
+		_zfcp_erp_lun_reopen(act->sdev, 0, "ersff_4", 0);
 		break;
 	}
 }
@@ -588,13 +624,13 @@ static void zfcp_erp_strategy_followup_success(struct zfcp_erp_action *act)
 {
 	switch (act->action) {
 	case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
-		_zfcp_erp_port_reopen_all(act->adapter, 0, "ersfs_1", NULL);
+		_zfcp_erp_port_reopen_all(act->adapter, 0, "ersfs_1");
 		break;
 	case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
-		_zfcp_erp_port_reopen(act->port, 0, "ersfs_2", NULL);
+		_zfcp_erp_port_reopen(act->port, 0, "ersfs_2");
 		break;
 	case ZFCP_ERP_ACTION_REOPEN_PORT:
-		_zfcp_erp_unit_reopen_all(act->port, 0, "ersfs_3", NULL);
+		_zfcp_erp_lun_reopen_all(act->port, 0, "ersfs_3");
 		break;
 	}
 }
@@ -613,17 +649,6 @@ static void zfcp_erp_wakeup(struct zfcp_adapter *adapter)
 	read_unlock_irqrestore(&adapter->erp_lock, flags);
 }
 
-static int zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *act)
-{
-	struct zfcp_qdio *qdio = act->adapter->qdio;
-
-	if (zfcp_qdio_open(qdio))
-		return ZFCP_ERP_FAILED;
-	init_waitqueue_head(&qdio->req_q_wq);
-	atomic_set_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &act->adapter->status);
-	return ZFCP_ERP_SUCCEEDED;
-}
-
 static void zfcp_erp_enqueue_ptp_port(struct zfcp_adapter *adapter)
 {
 	struct zfcp_port *port;
@@ -631,7 +656,7 @@ static void zfcp_erp_enqueue_ptp_port(struct zfcp_adapter *adapter)
 				 adapter->peer_d_id);
 	if (IS_ERR(port)) /* error or port already attached */
 		return;
-	_zfcp_erp_port_reopen(port, 0, "ereptp1", NULL);
+	_zfcp_erp_port_reopen(port, 0, "ereptp1");
 }
 
 static int zfcp_erp_adapter_strat_fsf_xconf(struct zfcp_erp_action *erp_action)
@@ -654,10 +679,8 @@ static int zfcp_erp_adapter_strat_fsf_xconf(struct zfcp_erp_action *erp_action)
 			return ZFCP_ERP_FAILED;
 		}
 
-		zfcp_dbf_rec_thread_lock("erasfx1", adapter->dbf);
 		wait_event(adapter->erp_ready_wq,
 			   !list_empty(&adapter->erp_ready_head));
-		zfcp_dbf_rec_thread_lock("erasfx2", adapter->dbf);
 		if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT)
 			break;
 
@@ -696,10 +719,10 @@ static int zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *act)
 	if (ret)
 		return ZFCP_ERP_FAILED;
 
-	zfcp_dbf_rec_thread_lock("erasox1", adapter->dbf);
+	zfcp_dbf_rec_run("erasox1", act);
 	wait_event(adapter->erp_ready_wq,
 		   !list_empty(&adapter->erp_ready_head));
-	zfcp_dbf_rec_thread_lock("erasox2", adapter->dbf);
+	zfcp_dbf_rec_run("erasox2", act);
 	if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
 		return ZFCP_ERP_FAILED;
 
@@ -714,6 +737,14 @@ static int zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *act)
 	if (zfcp_erp_adapter_strategy_open_fsf_xport(act) == ZFCP_ERP_FAILED)
 		return ZFCP_ERP_FAILED;
 
+	if (mempool_resize(act->adapter->pool.sr_data,
+			   act->adapter->stat_read_buf_num, GFP_KERNEL))
+		return ZFCP_ERP_FAILED;
+
+	if (mempool_resize(act->adapter->pool.status_read_req,
+			   act->adapter->stat_read_buf_num, GFP_KERNEL))
+		return ZFCP_ERP_FAILED;
+
 	atomic_set(&act->adapter->stat_miss, act->adapter->stat_read_buf_num);
 	if (zfcp_status_read_refill(act->adapter))
 		return ZFCP_ERP_FAILED;
@@ -730,9 +761,8 @@ static void zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *act)
 	zfcp_fsf_req_dismiss_all(adapter);
 	adapter->fsf_req_seq_no = 0;
 	zfcp_fc_wka_ports_force_offline(adapter->gs);
-	/* all ports and units are closed */
-	zfcp_erp_modify_adapter_status(adapter, "erascl1", NULL,
-				       ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
+	/* all ports and LUNs are closed */
+	zfcp_erp_clear_adapter_status(adapter, ZFCP_STATUS_COMMON_OPEN);
 
 	atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK |
 			  ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
@@ -742,7 +772,7 @@ static int zfcp_erp_adapter_strategy_open(struct zfcp_erp_action *act)
 {
 	struct zfcp_adapter *adapter = act->adapter;
 
-	if (zfcp_erp_adapter_strategy_open_qdio(act)) {
+	if (zfcp_qdio_open(adapter->qdio)) {
 		atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK |
 				  ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED,
 				  &adapter->status);
@@ -849,7 +879,7 @@ static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act)
 	struct zfcp_port *port = act->port;
 
 	if (port->wwpn != adapter->peer_wwpn) {
-		zfcp_erp_port_failed(port, "eroptp1", NULL);
+		zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ERP_FAILED);
 		return ZFCP_ERP_FAILED;
 	}
 	port->d_id = adapter->peer_d_id;
@@ -885,8 +915,7 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act)
 		}
 		if (port->d_id && !(p_status & ZFCP_STATUS_COMMON_NOESC)) {
 			port->d_id = 0;
-			_zfcp_erp_port_reopen(port, 0, "erpsoc1", NULL);
-			return ZFCP_ERP_EXIT;
+			return ZFCP_ERP_FAILED;
 		}
 		/* fall through otherwise */
 	}
@@ -922,82 +951,86 @@ close_init_done:
 	return zfcp_erp_port_strategy_open_common(erp_action);
 }
 
-static void zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *unit)
+static void zfcp_erp_lun_strategy_clearstati(struct scsi_device *sdev)
 {
-	atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
-			  ZFCP_STATUS_UNIT_SHARED |
-			  ZFCP_STATUS_UNIT_READONLY,
-			  &unit->status);
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+
+	atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED,
+			  &zfcp_sdev->status);
 }
 
-static int zfcp_erp_unit_strategy_close(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_lun_strategy_close(struct zfcp_erp_action *erp_action)
 {
-	int retval = zfcp_fsf_close_unit(erp_action);
+	int retval = zfcp_fsf_close_lun(erp_action);
 	if (retval == -ENOMEM)
 		return ZFCP_ERP_NOMEM;
-	erp_action->step = ZFCP_ERP_STEP_UNIT_CLOSING;
+	erp_action->step = ZFCP_ERP_STEP_LUN_CLOSING;
 	if (retval)
 		return ZFCP_ERP_FAILED;
 	return ZFCP_ERP_CONTINUES;
 }
 
-static int zfcp_erp_unit_strategy_open(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_lun_strategy_open(struct zfcp_erp_action *erp_action)
 {
-	int retval = zfcp_fsf_open_unit(erp_action);
+	int retval = zfcp_fsf_open_lun(erp_action);
 	if (retval == -ENOMEM)
 		return ZFCP_ERP_NOMEM;
-	erp_action->step = ZFCP_ERP_STEP_UNIT_OPENING;
+	erp_action->step = ZFCP_ERP_STEP_LUN_OPENING;
 	if (retval)
 		return  ZFCP_ERP_FAILED;
 	return ZFCP_ERP_CONTINUES;
 }
 
-static int zfcp_erp_unit_strategy(struct zfcp_erp_action *erp_action)
+static int zfcp_erp_lun_strategy(struct zfcp_erp_action *erp_action)
 {
-	struct zfcp_unit *unit = erp_action->unit;
+	struct scsi_device *sdev = erp_action->sdev;
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
 
 	switch (erp_action->step) {
 	case ZFCP_ERP_STEP_UNINITIALIZED:
-		zfcp_erp_unit_strategy_clearstati(unit);
-		if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_OPEN)
-			return zfcp_erp_unit_strategy_close(erp_action);
+		zfcp_erp_lun_strategy_clearstati(sdev);
+		if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_OPEN)
+			return zfcp_erp_lun_strategy_close(erp_action);
 		/* already closed, fall through */
-	case ZFCP_ERP_STEP_UNIT_CLOSING:
-		if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_OPEN)
+	case ZFCP_ERP_STEP_LUN_CLOSING:
+		if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_OPEN)
 			return ZFCP_ERP_FAILED;
 		if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY)
 			return ZFCP_ERP_EXIT;
-		return zfcp_erp_unit_strategy_open(erp_action);
+		return zfcp_erp_lun_strategy_open(erp_action);
 
-	case ZFCP_ERP_STEP_UNIT_OPENING:
-		if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_OPEN)
+	case ZFCP_ERP_STEP_LUN_OPENING:
+		if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_OPEN)
 			return ZFCP_ERP_SUCCEEDED;
 	}
 	return ZFCP_ERP_FAILED;
 }
 
-static int zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result)
+static int zfcp_erp_strategy_check_lun(struct scsi_device *sdev, int result)
 {
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+
 	switch (result) {
 	case ZFCP_ERP_SUCCEEDED :
-		atomic_set(&unit->erp_counter, 0);
-		zfcp_erp_unit_unblock(unit);
+		atomic_set(&zfcp_sdev->erp_counter, 0);
+		zfcp_erp_lun_unblock(sdev);
 		break;
 	case ZFCP_ERP_FAILED :
-		atomic_inc(&unit->erp_counter);
-		if (atomic_read(&unit->erp_counter) > ZFCP_MAX_ERPS) {
-			dev_err(&unit->port->adapter->ccw_device->dev,
-				"ERP failed for unit 0x%016Lx on "
+		atomic_inc(&zfcp_sdev->erp_counter);
+		if (atomic_read(&zfcp_sdev->erp_counter) > ZFCP_MAX_ERPS) {
+			dev_err(&zfcp_sdev->port->adapter->ccw_device->dev,
+				"ERP failed for LUN 0x%016Lx on "
 				"port 0x%016Lx\n",
-				(unsigned long long)unit->fcp_lun,
-				(unsigned long long)unit->port->wwpn);
-			zfcp_erp_unit_failed(unit, "erusck1", NULL);
+				(unsigned long long)zfcp_scsi_dev_lun(sdev),
+				(unsigned long long)zfcp_sdev->port->wwpn);
+			zfcp_erp_set_lun_status(sdev,
+						ZFCP_STATUS_COMMON_ERP_FAILED);
 		}
 		break;
 	}
 
-	if (atomic_read(&unit->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
-		zfcp_erp_unit_block(unit, 0);
+	if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
+		zfcp_erp_lun_block(sdev, 0);
 		result = ZFCP_ERP_EXIT;
 	}
 	return result;
@@ -1021,7 +1054,8 @@ static int zfcp_erp_strategy_check_port(struct zfcp_port *port, int result)
 			dev_err(&port->adapter->ccw_device->dev,
 				"ERP failed for remote port 0x%016Lx\n",
 				(unsigned long long)port->wwpn);
-			zfcp_erp_port_failed(port, "erpsck1", NULL);
+			zfcp_erp_set_port_status(port,
+					 ZFCP_STATUS_COMMON_ERP_FAILED);
 		}
 		break;
 	}
@@ -1048,7 +1082,8 @@ static int zfcp_erp_strategy_check_adapter(struct zfcp_adapter *adapter,
 			dev_err(&adapter->ccw_device->dev,
 				"ERP cannot recover an error "
 				"on the FCP device\n");
-			zfcp_erp_adapter_failed(adapter, "erasck1", NULL);
+			zfcp_erp_set_adapter_status(adapter,
+					    ZFCP_STATUS_COMMON_ERP_FAILED);
 		}
 		break;
 	}
@@ -1065,12 +1100,12 @@ static int zfcp_erp_strategy_check_target(struct zfcp_erp_action *erp_action,
 {
 	struct zfcp_adapter *adapter = erp_action->adapter;
 	struct zfcp_port *port = erp_action->port;
-	struct zfcp_unit *unit = erp_action->unit;
+	struct scsi_device *sdev = erp_action->sdev;
 
 	switch (erp_action->action) {
 
-	case ZFCP_ERP_ACTION_REOPEN_UNIT:
-		result = zfcp_erp_strategy_check_unit(unit, result);
+	case ZFCP_ERP_ACTION_REOPEN_LUN:
+		result = zfcp_erp_strategy_check_lun(sdev, result);
 		break;
 
 	case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
@@ -1105,7 +1140,8 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
 	int action = act->action;
 	struct zfcp_adapter *adapter = act->adapter;
 	struct zfcp_port *port = act->port;
-	struct zfcp_unit *unit = act->unit;
+	struct scsi_device *sdev = act->sdev;
+	struct zfcp_scsi_dev *zfcp_sdev;
 	u32 erp_status = act->status;
 
 	switch (action) {
@@ -1113,7 +1149,7 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
 		if (zfcp_erp_strat_change_det(&adapter->status, erp_status)) {
 			_zfcp_erp_adapter_reopen(adapter,
 						 ZFCP_STATUS_COMMON_ERP_FAILED,
-						 "ersscg1", NULL);
+						 "ersscg1");
 			return ZFCP_ERP_EXIT;
 		}
 		break;
@@ -1123,16 +1159,17 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
 		if (zfcp_erp_strat_change_det(&port->status, erp_status)) {
 			_zfcp_erp_port_reopen(port,
 					      ZFCP_STATUS_COMMON_ERP_FAILED,
-					      "ersscg2", NULL);
+					      "ersscg2");
 			return ZFCP_ERP_EXIT;
 		}
 		break;
 
-	case ZFCP_ERP_ACTION_REOPEN_UNIT:
-		if (zfcp_erp_strat_change_det(&unit->status, erp_status)) {
-			_zfcp_erp_unit_reopen(unit,
-					      ZFCP_STATUS_COMMON_ERP_FAILED,
-					      "ersscg3", NULL);
+	case ZFCP_ERP_ACTION_REOPEN_LUN:
+		zfcp_sdev = sdev_to_zfcp(sdev);
+		if (zfcp_erp_strat_change_det(&zfcp_sdev->status, erp_status)) {
+			_zfcp_erp_lun_reopen(sdev,
+					     ZFCP_STATUS_COMMON_ERP_FAILED,
+					     "ersscg3", 0);
 			return ZFCP_ERP_EXIT;
 		}
 		break;
@@ -1143,6 +1180,7 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
 static void zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
 {
 	struct zfcp_adapter *adapter = erp_action->adapter;
+	struct zfcp_scsi_dev *zfcp_sdev;
 
 	adapter->erp_total_count--;
 	if (erp_action->status & ZFCP_STATUS_ERP_LOWMEM) {
@@ -1151,12 +1189,13 @@ static void zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
 	}
 
 	list_del(&erp_action->list);
-	zfcp_dbf_rec_action("eractd1", erp_action);
+	zfcp_dbf_rec_run("eractd1", erp_action);
 
 	switch (erp_action->action) {
-	case ZFCP_ERP_ACTION_REOPEN_UNIT:
+	case ZFCP_ERP_ACTION_REOPEN_LUN:
+		zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
 		atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
-				  &erp_action->unit->status);
+				  &zfcp_sdev->status);
 		break;
 
 	case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
@@ -1176,32 +1215,30 @@ static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
 {
 	struct zfcp_adapter *adapter = act->adapter;
 	struct zfcp_port *port = act->port;
-	struct zfcp_unit *unit = act->unit;
+	struct scsi_device *sdev = act->sdev;
 
 	switch (act->action) {
-	case ZFCP_ERP_ACTION_REOPEN_UNIT:
-		if ((result == ZFCP_ERP_SUCCEEDED) && !unit->device) {
-			get_device(&unit->dev);
-			if (scsi_queue_work(unit->port->adapter->scsi_host,
-					    &unit->scsi_work) <= 0)
-				put_device(&unit->dev);
-		}
-		put_device(&unit->dev);
+	case ZFCP_ERP_ACTION_REOPEN_LUN:
+		if (!(act->status & ZFCP_STATUS_ERP_NO_REF))
+			scsi_device_put(sdev);
 		break;
 
-	case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
 	case ZFCP_ERP_ACTION_REOPEN_PORT:
 		if (result == ZFCP_ERP_SUCCEEDED)
 			zfcp_scsi_schedule_rport_register(port);
+		/* fall through */
+	case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
 		put_device(&port->dev);
 		break;
 
 	case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
 		if (result == ZFCP_ERP_SUCCEEDED) {
 			register_service_level(&adapter->service_level);
-			queue_work(adapter->work_queue, &adapter->scan_work);
+			zfcp_fc_conditional_port_scan(adapter);
+			queue_work(adapter->work_queue, &adapter->ns_up_work);
 		} else
 			unregister_service_level(&adapter->service_level);
+
 		kref_put(&adapter->ref, zfcp_adapter_release);
 		break;
 	}
@@ -1216,8 +1253,8 @@ static int zfcp_erp_strategy_do_action(struct zfcp_erp_action *erp_action)
 		return zfcp_erp_port_forced_strategy(erp_action);
 	case ZFCP_ERP_ACTION_REOPEN_PORT:
 		return zfcp_erp_port_strategy(erp_action);
-	case ZFCP_ERP_ACTION_REOPEN_UNIT:
-		return zfcp_erp_unit_strategy(erp_action);
+	case ZFCP_ERP_ACTION_REOPEN_LUN:
+		return zfcp_erp_lun_strategy(erp_action);
 	}
 	return ZFCP_ERP_FAILED;
 }
@@ -1239,6 +1276,11 @@ static int zfcp_erp_strategy(struct zfcp_erp_action *erp_action)
 		goto unlock;
 	}
 
+	if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
+		retval = ZFCP_ERP_FAILED;
+		goto check_target;
+	}
+
 	zfcp_erp_action_to_running(erp_action);
 
 	/* no lock to allow for blocking operations */
@@ -1256,7 +1298,7 @@ static int zfcp_erp_strategy(struct zfcp_erp_action *erp_action)
 			erp_action->status |= ZFCP_STATUS_ERP_LOWMEM;
 		}
 		if (adapter->erp_total_count == adapter->erp_low_mem_count)
-			_zfcp_erp_adapter_reopen(adapter, 0, "erstgy1", NULL);
+			_zfcp_erp_adapter_reopen(adapter, 0, "erstgy1");
 		else {
 			zfcp_erp_strategy_memwait(erp_action);
 			retval = ZFCP_ERP_CONTINUES;
@@ -1271,6 +1313,7 @@ static int zfcp_erp_strategy(struct zfcp_erp_action *erp_action)
 		goto unlock;
 	}
 
+check_target:
 	retval = zfcp_erp_strategy_check_target(erp_action, retval);
 	zfcp_erp_action_dequeue(erp_action);
 	retval = zfcp_erp_strategy_statechange(erp_action, retval);
@@ -1299,11 +1342,9 @@ static int zfcp_erp_thread(void *data)
 	unsigned long flags;
 
 	for (;;) {
-		zfcp_dbf_rec_thread_lock("erthrd1", adapter->dbf);
 		wait_event_interruptible(adapter->erp_ready_wq,
 			   !list_empty(&adapter->erp_ready_head) ||
 			   kthread_should_stop());
-		zfcp_dbf_rec_thread_lock("erthrd2", adapter->dbf);
 
 		if (kthread_should_stop())
 			break;
@@ -1364,42 +1405,6 @@ void zfcp_erp_thread_kill(struct zfcp_adapter *adapter)
 }
 
 /**
- * zfcp_erp_adapter_failed - Set adapter status to failed.
- * @adapter: Failed adapter.
- * @id: Event id for debug trace.
- * @ref: Reference for debug trace.
- */
-void zfcp_erp_adapter_failed(struct zfcp_adapter *adapter, char *id, void *ref)
-{
-	zfcp_erp_modify_adapter_status(adapter, id, ref,
-				       ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
-}
-
-/**
- * zfcp_erp_port_failed - Set port status to failed.
- * @port: Failed port.
- * @id: Event id for debug trace.
- * @ref: Reference for debug trace.
- */
-void zfcp_erp_port_failed(struct zfcp_port *port, char *id, void *ref)
-{
-	zfcp_erp_modify_port_status(port, id, ref,
-				    ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
-}
-
-/**
- * zfcp_erp_unit_failed - Set unit status to failed.
- * @unit: Failed unit.
- * @id: Event id for debug trace.
- * @ref: Reference for debug trace.
- */
-void zfcp_erp_unit_failed(struct zfcp_unit *unit, char *id, void *ref)
-{
-	zfcp_erp_modify_unit_status(unit, id, ref,
-				    ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
-}
-
-/**
  * zfcp_erp_wait - wait for completion of error recovery on an adapter
  * @adapter: adapter for which to wait for completion of its error recovery
  */
@@ -1411,210 +1416,158 @@ void zfcp_erp_wait(struct zfcp_adapter *adapter)
 }
 
 /**
- * zfcp_erp_modify_adapter_status - change adapter status bits
+ * zfcp_erp_set_adapter_status - set adapter status bits
  * @adapter: adapter to change the status
- * @id: id for the debug trace
- * @ref: reference for the debug trace
  * @mask: status bits to change
- * @set_or_clear: ZFCP_SET or ZFCP_CLEAR
  *
- * Changes in common status bits are propagated to attached ports and units.
+ * Changes in common status bits are propagated to attached ports and LUNs.
  */
-void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, char *id,
-				    void *ref, u32 mask, int set_or_clear)
+void zfcp_erp_set_adapter_status(struct zfcp_adapter *adapter, u32 mask)
 {
 	struct zfcp_port *port;
+	struct scsi_device *sdev;
 	unsigned long flags;
 	u32 common_mask = mask & ZFCP_COMMON_FLAGS;
 
-	if (set_or_clear == ZFCP_SET) {
-		if (status_change_set(mask, &adapter->status))
-			zfcp_dbf_rec_adapter(id, ref, adapter->dbf);
-		atomic_set_mask(mask, &adapter->status);
-	} else {
-		if (status_change_clear(mask, &adapter->status))
-			zfcp_dbf_rec_adapter(id, ref, adapter->dbf);
-		atomic_clear_mask(mask, &adapter->status);
-		if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
-			atomic_set(&adapter->erp_counter, 0);
-	}
+	atomic_set_mask(mask, &adapter->status);
 
-	if (common_mask) {
-		read_lock_irqsave(&adapter->port_list_lock, flags);
-		list_for_each_entry(port, &adapter->port_list, list)
-			zfcp_erp_modify_port_status(port, id, ref, common_mask,
-						    set_or_clear);
-		read_unlock_irqrestore(&adapter->port_list_lock, flags);
-	}
+	if (!common_mask)
+		return;
+
+	read_lock_irqsave(&adapter->port_list_lock, flags);
+	list_for_each_entry(port, &adapter->port_list, list)
+		atomic_set_mask(common_mask, &port->status);
+	read_unlock_irqrestore(&adapter->port_list_lock, flags);
+
+	spin_lock_irqsave(adapter->scsi_host->host_lock, flags);
+	__shost_for_each_device(sdev, adapter->scsi_host)
+		atomic_set_mask(common_mask, &sdev_to_zfcp(sdev)->status);
+	spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags);
 }
 
 /**
- * zfcp_erp_modify_port_status - change port status bits
- * @port: port to change the status bits
- * @id: id for the debug trace
- * @ref: reference for the debug trace
+ * zfcp_erp_clear_adapter_status - clear adapter status bits
+ * @adapter: adapter to change the status
  * @mask: status bits to change
- * @set_or_clear: ZFCP_SET or ZFCP_CLEAR
  *
- * Changes in common status bits are propagated to attached units.
+ * Changes in common status bits are propagated to attached ports and LUNs.
  */
-void zfcp_erp_modify_port_status(struct zfcp_port *port, char *id, void *ref,
-				 u32 mask, int set_or_clear)
+void zfcp_erp_clear_adapter_status(struct zfcp_adapter *adapter, u32 mask)
 {
-	struct zfcp_unit *unit;
+	struct zfcp_port *port;
+	struct scsi_device *sdev;
 	unsigned long flags;
 	u32 common_mask = mask & ZFCP_COMMON_FLAGS;
+	u32 clear_counter = mask & ZFCP_STATUS_COMMON_ERP_FAILED;
+
+	atomic_clear_mask(mask, &adapter->status);
+
+	if (!common_mask)
+		return;
 
-	if (set_or_clear == ZFCP_SET) {
-		if (status_change_set(mask, &port->status))
-			zfcp_dbf_rec_port(id, ref, port);
-		atomic_set_mask(mask, &port->status);
-	} else {
-		if (status_change_clear(mask, &port->status))
-			zfcp_dbf_rec_port(id, ref, port);
-		atomic_clear_mask(mask, &port->status);
-		if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
+	if (clear_counter)
+		atomic_set(&adapter->erp_counter, 0);
+
+	read_lock_irqsave(&adapter->port_list_lock, flags);
+	list_for_each_entry(port, &adapter->port_list, list) {
+		atomic_clear_mask(common_mask, &port->status);
+		if (clear_counter)
 			atomic_set(&port->erp_counter, 0);
 	}
+	read_unlock_irqrestore(&adapter->port_list_lock, flags);
 
-	if (common_mask) {
-		read_lock_irqsave(&port->unit_list_lock, flags);
-		list_for_each_entry(unit, &port->unit_list, list)
-			zfcp_erp_modify_unit_status(unit, id, ref, common_mask,
-						    set_or_clear);
-		read_unlock_irqrestore(&port->unit_list_lock, flags);
+	spin_lock_irqsave(adapter->scsi_host->host_lock, flags);
+	__shost_for_each_device(sdev, adapter->scsi_host) {
+		atomic_clear_mask(common_mask, &sdev_to_zfcp(sdev)->status);
+		if (clear_counter)
+			atomic_set(&sdev_to_zfcp(sdev)->erp_counter, 0);
 	}
+	spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags);
 }
 
 /**
- * zfcp_erp_modify_unit_status - change unit status bits
- * @unit: unit to change the status bits
- * @id: id for the debug trace
- * @ref: reference for the debug trace
+ * zfcp_erp_set_port_status - set port status bits
+ * @port: port to change the status
  * @mask: status bits to change
- * @set_or_clear: ZFCP_SET or ZFCP_CLEAR
- */
-void zfcp_erp_modify_unit_status(struct zfcp_unit *unit, char *id, void *ref,
-				 u32 mask, int set_or_clear)
-{
-	if (set_or_clear == ZFCP_SET) {
-		if (status_change_set(mask, &unit->status))
-			zfcp_dbf_rec_unit(id, ref, unit);
-		atomic_set_mask(mask, &unit->status);
-	} else {
-		if (status_change_clear(mask, &unit->status))
-			zfcp_dbf_rec_unit(id, ref, unit);
-		atomic_clear_mask(mask, &unit->status);
-		if (mask & ZFCP_STATUS_COMMON_ERP_FAILED) {
-			atomic_set(&unit->erp_counter, 0);
-		}
-	}
-}
-
-/**
- * zfcp_erp_port_boxed - Mark port as "boxed" and start ERP
- * @port: The "boxed" port.
- * @id: The debug trace id.
- * @id: Reference for the debug trace.
+ *
+ * Changes in common status bits are propagated to attached LUNs.
  */
-void zfcp_erp_port_boxed(struct zfcp_port *port, char *id, void *ref)
+void zfcp_erp_set_port_status(struct zfcp_port *port, u32 mask)
 {
-	zfcp_erp_modify_port_status(port, id, ref,
-				    ZFCP_STATUS_COMMON_ACCESS_BOXED, ZFCP_SET);
-	zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
-}
+	struct scsi_device *sdev;
+	u32 common_mask = mask & ZFCP_COMMON_FLAGS;
+	unsigned long flags;
 
-/**
- * zfcp_erp_unit_boxed - Mark unit as "boxed" and start ERP
- * @port: The "boxed" unit.
- * @id: The debug trace id.
- * @id: Reference for the debug trace.
- */
-void zfcp_erp_unit_boxed(struct zfcp_unit *unit, char *id, void *ref)
-{
-	zfcp_erp_modify_unit_status(unit, id, ref,
-				    ZFCP_STATUS_COMMON_ACCESS_BOXED, ZFCP_SET);
-	zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
-}
+	atomic_set_mask(mask, &port->status);
 
-/**
- * zfcp_erp_port_access_denied - Adapter denied access to port.
- * @port: port where access has been denied
- * @id: id for debug trace
- * @ref: reference for debug trace
- *
- * Since the adapter has denied access, stop using the port and the
- * attached units.
- */
-void zfcp_erp_port_access_denied(struct zfcp_port *port, char *id, void *ref)
-{
-	zfcp_erp_modify_port_status(port, id, ref,
-				    ZFCP_STATUS_COMMON_ERP_FAILED |
-				    ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
+	if (!common_mask)
+		return;
+
+	spin_lock_irqsave(port->adapter->scsi_host->host_lock, flags);
+	__shost_for_each_device(sdev, port->adapter->scsi_host)
+		if (sdev_to_zfcp(sdev)->port == port)
+			atomic_set_mask(common_mask,
+					&sdev_to_zfcp(sdev)->status);
+	spin_unlock_irqrestore(port->adapter->scsi_host->host_lock, flags);
 }
 
 /**
- * zfcp_erp_unit_access_denied - Adapter denied access to unit.
- * @unit: unit where access has been denied
- * @id: id for debug trace
- * @ref: reference for debug trace
+ * zfcp_erp_clear_port_status - clear port status bits
+ * @port: adapter to change the status
+ * @mask: status bits to change
  *
- * Since the adapter has denied access, stop using the unit.
+ * Changes in common status bits are propagated to attached LUNs.
  */
-void zfcp_erp_unit_access_denied(struct zfcp_unit *unit, char *id, void *ref)
+void zfcp_erp_clear_port_status(struct zfcp_port *port, u32 mask)
 {
-	zfcp_erp_modify_unit_status(unit, id, ref,
-				    ZFCP_STATUS_COMMON_ERP_FAILED |
-				    ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
-}
+	struct scsi_device *sdev;
+	u32 common_mask = mask & ZFCP_COMMON_FLAGS;
+	u32 clear_counter = mask & ZFCP_STATUS_COMMON_ERP_FAILED;
+	unsigned long flags;
 
-static void zfcp_erp_unit_access_changed(struct zfcp_unit *unit, char *id,
-					 void *ref)
-{
-	int status = atomic_read(&unit->status);
-	if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED |
-			ZFCP_STATUS_COMMON_ACCESS_BOXED)))
+	atomic_clear_mask(mask, &port->status);
+
+	if (!common_mask)
 		return;
 
-	zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
+	if (clear_counter)
+		atomic_set(&port->erp_counter, 0);
+
+	spin_lock_irqsave(port->adapter->scsi_host->host_lock, flags);
+	__shost_for_each_device(sdev, port->adapter->scsi_host)
+		if (sdev_to_zfcp(sdev)->port == port) {
+			atomic_clear_mask(common_mask,
+					  &sdev_to_zfcp(sdev)->status);
+			if (clear_counter)
+				atomic_set(&sdev_to_zfcp(sdev)->erp_counter, 0);
+		}
+	spin_unlock_irqrestore(port->adapter->scsi_host->host_lock, flags);
 }
 
-static void zfcp_erp_port_access_changed(struct zfcp_port *port, char *id,
-					 void *ref)
+/**
+ * zfcp_erp_set_lun_status - set lun status bits
+ * @sdev: SCSI device / lun to set the status bits
+ * @mask: status bits to change
+ */
+void zfcp_erp_set_lun_status(struct scsi_device *sdev, u32 mask)
 {
-	struct zfcp_unit *unit;
-	unsigned long flags;
-	int status = atomic_read(&port->status);
-
-	if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED |
-			ZFCP_STATUS_COMMON_ACCESS_BOXED))) {
-		read_lock_irqsave(&port->unit_list_lock, flags);
-		list_for_each_entry(unit, &port->unit_list, list)
-				    zfcp_erp_unit_access_changed(unit, id, ref);
-		read_unlock_irqrestore(&port->unit_list_lock, flags);
-		return;
-	}
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
 
-	zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
+	atomic_set_mask(mask, &zfcp_sdev->status);
 }
 
 /**
- * zfcp_erp_adapter_access_changed - Process change in adapter ACT
- * @adapter: Adapter where the Access Control Table (ACT) changed
- * @id: Id for debug trace
- * @ref: Reference for debug trace
+ * zfcp_erp_clear_lun_status - clear lun status bits
+ * @sdev: SCSi device / lun to clear the status bits
+ * @mask: status bits to change
  */
-void zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter, char *id,
-				     void *ref)
+void zfcp_erp_clear_lun_status(struct scsi_device *sdev, u32 mask)
 {
-	unsigned long flags;
-	struct zfcp_port *port;
+	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
 
-	if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
-		return;
+	atomic_clear_mask(mask, &zfcp_sdev->status);
 
-	read_lock_irqsave(&adapter->port_list_lock, flags);
-	list_for_each_entry(port, &adapter->port_list, list)
-		zfcp_erp_port_access_changed(port, id, ref);
-	read_unlock_irqrestore(&adapter->port_list_lock, flags);
+	if (mask & ZFCP_STATUS_COMMON_ERP_FAILED)
+		atomic_set(&zfcp_sdev->erp_counter, 0);
 }
+