Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (33 commits)
  [S390] s390: hibernation support for s390
  [S390] pm: dcssblk power management callbacks.
  [S390] pm: monreader power management callbacks.
  [S390] pm: monwriter power management callbacks.
  [S390] pm: memory hotplug power management callbacks
  [S390] pm: con3270 power management callbacks.
  [S390] pm: smsgiucv power management callbacks.
  [S390] pm: hvc_iucv power management callbacks
  [S390] PM: af_iucv power management callbacks.
  [S390] pm: netiucv power management callbacks.
  [S390] pm: iucv power management callbacks.
  [S390] iucv: establish reboot notifier
  [S390] pm: power management support for SCLP drivers.
  [S390] pm: tape power management callbacks
  [S390] pm: vmlogrdr power management callbacks
  [S390] pm: vmur driver power management callbacks
  [S390] pm: appldata power management callbacks
  [S390] pm: vmwatchdog power management callbacks.
  [S390] pm: zfcp driver power management callbacks
  [S390] pm: claw driver power management callbacks
  ...

50 files changed, 2773 insertions, 456 deletions

diff --git a/drivers/char/hvc_iucv.c b/drivers/char/hvc_iucv.c
index 54481a88776..86105efb4eb 100644
--- a/drivers/char/hvc_iucv.c
+++ b/drivers/char/hvc_iucv.c
@@ -4,7 +4,7 @@
  * This HVC device driver provides terminal access using
  * z/VM IUCV communication paths.
  *
- * Copyright IBM Corp. 2008
+ * Copyright IBM Corp. 2008, 2009
  *
  * Author(s):	Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
  */
@@ -15,6 +15,7 @@
 #include <asm/ebcdic.h>
 #include <linux/ctype.h>
 #include <linux/delay.h>
+#include <linux/device.h>
 #include <linux/init.h>
 #include <linux/mempool.h>
 #include <linux/moduleparam.h>
@@ -74,6 +75,7 @@ struct hvc_iucv_private {
 	wait_queue_head_t	sndbuf_waitq;	/* wait for send completion */
 	struct list_head	tty_outqueue;	/* outgoing IUCV messages */
 	struct list_head	tty_inqueue;	/* incoming IUCV messages */
+	struct device		*dev;		/* device structure */
 };
 
 struct iucv_tty_buffer {
@@ -542,7 +544,68 @@ static void flush_sndbuf_sync(struct hvc_iucv_private *priv)
 
 	if (sync_wait)
 		wait_event_timeout(priv->sndbuf_waitq,
-				   tty_outqueue_empty(priv), HZ);
+				   tty_outqueue_empty(priv), HZ/10);
+}
+
+/**
+ * hvc_iucv_hangup() - Sever IUCV path and schedule hvc tty hang up
+ * @priv:	Pointer to hvc_iucv_private structure
+ *
+ * This routine severs an existing IUCV communication path and hangs
+ * up the underlying HVC terminal device.
+ * The hang-up occurs only if an IUCV communication path is established;
+ * otherwise there is no need to hang up the terminal device.
+ *
+ * The IUCV HVC hang-up is separated into two steps:
+ * 1. After the IUCV path has been severed, the iucv_state is set to
+ *    IUCV_SEVERED.
+ * 2. Later, when the HVC thread calls hvc_iucv_get_chars(), the
+ *    IUCV_SEVERED state causes the tty hang-up in the HVC layer.
+ *
+ * If the tty has not yet been opened, clean up the hvc_iucv_private
+ * structure to allow re-connects.
+ * If the tty has been opened, let get_chars() return -EPIPE to signal
+ * the HVC layer to hang up the tty and, if so, wake up the HVC thread
+ * to call get_chars()...
+ *
+ * Special notes on hanging up a HVC terminal instantiated as console:
+ * Hang-up:	1. do_tty_hangup() replaces file ops (= hung_up_tty_fops)
+ *		2. do_tty_hangup() calls tty->ops->close() for console_filp
+ *			=> no hangup notifier is called by HVC (default)
+ *		2. hvc_close() returns because of tty_hung_up_p(filp)
+ *			=> no delete notifier is called!
+ * Finally, the back-end is not being notified, thus, the tty session is
+ * kept active (TTY_OPEN) to be ready for re-connects.
+ *
+ * Locking:	spin_lock(&priv->lock) w/o disabling bh
+ */
+static void hvc_iucv_hangup(struct hvc_iucv_private *priv)
+{
+	struct iucv_path *path;
+
+	path = NULL;
+	spin_lock(&priv->lock);
+	if (priv->iucv_state == IUCV_CONNECTED) {
+		path = priv->path;
+		priv->path = NULL;
+		priv->iucv_state = IUCV_SEVERED;
+		if (priv->tty_state == TTY_CLOSED)
+			hvc_iucv_cleanup(priv);
+		else
+			/* console is special (see above) */
+			if (priv->is_console) {
+				hvc_iucv_cleanup(priv);
+				priv->tty_state = TTY_OPENED;
+			} else
+				hvc_kick();
+	}
+	spin_unlock(&priv->lock);
+
+	/* finally sever path (outside of priv->lock due to lock ordering) */
+	if (path) {
+		iucv_path_sever(path, NULL);
+		iucv_path_free(path);
+	}
 }
 
 /**
@@ -735,11 +798,8 @@ out_path_handled:
  * @ipuser:	User specified data for this path
  *		(AF_IUCV: port/service name and originator port)
  *
- * The function also severs the path (as required by the IUCV protocol) and
- * sets the iucv state to IUCV_SEVERED for the associated struct
- * hvc_iucv_private instance. Later, the IUCV_SEVERED state triggers a tty
- * hangup (hvc_iucv_get_chars() / hvc_iucv_write()).
- * If tty portion of the HVC is closed, clean up the outqueue.
+ * This function calls the hvc_iucv_hangup() function for the
+ * respective IUCV HVC terminal.
  *
  * Locking:	struct hvc_iucv_private->lock
  */
@@ -747,33 +807,7 @@ static void hvc_iucv_path_severed(struct iucv_path *path, u8 ipuser[16])
 {
 	struct hvc_iucv_private *priv = path->private;
 
-	spin_lock(&priv->lock);
-	priv->iucv_state = IUCV_SEVERED;
-
-	/* If the tty has not yet been opened, clean up the hvc_iucv_private
-	 * structure to allow re-connects.
-	 * This is also done for our console device because console hangups
-	 * are handled specially and no notifier is called by HVC.
-	 * The tty session is active (TTY_OPEN) and ready for re-connects...
-	 *
-	 * If it has been opened, let get_chars() return -EPIPE to signal the
-	 * HVC layer to hang up the tty.
-	 * If so, we need to wake up the HVC thread to call get_chars()...
-	 */
-	priv->path = NULL;
-	if (priv->tty_state == TTY_CLOSED)
-		hvc_iucv_cleanup(priv);
-	else
-		if (priv->is_console) {
-			hvc_iucv_cleanup(priv);
-			priv->tty_state = TTY_OPENED;
-		} else
-			hvc_kick();
-	spin_unlock(&priv->lock);
-
-	/* finally sever path (outside of priv->lock due to lock ordering) */
-	iucv_path_sever(path, ipuser);
-	iucv_path_free(path);
+	hvc_iucv_hangup(priv);
 }
 
 /**
@@ -853,6 +887,37 @@ static void hvc_iucv_msg_complete(struct iucv_path *path,
 	destroy_tty_buffer_list(&list_remove);
 }
 
+/**
+ * hvc_iucv_pm_freeze() - Freeze PM callback
+ * @dev:	IUVC HVC terminal device
+ *
+ * Sever an established IUCV communication path and
+ * trigger a hang-up of the underlying HVC terminal.
+ */
+static int hvc_iucv_pm_freeze(struct device *dev)
+{
+	struct hvc_iucv_private *priv = dev_get_drvdata(dev);
+
+	local_bh_disable();
+	hvc_iucv_hangup(priv);
+	local_bh_enable();
+
+	return 0;
+}
+
+/**
+ * hvc_iucv_pm_restore_thaw() - Thaw and restore PM callback
+ * @dev:	IUVC HVC terminal device
+ *
+ * Wake up the HVC thread to trigger hang-up and respective
+ * HVC back-end notifier invocations.
+ */
+static int hvc_iucv_pm_restore_thaw(struct device *dev)
+{
+	hvc_kick();
+	return 0;
+}
+
 
 /* HVC operations */
 static struct hv_ops hvc_iucv_ops = {
@@ -863,6 +928,20 @@ static struct hv_ops hvc_iucv_ops = {
 	.notifier_hangup = hvc_iucv_notifier_hangup,
 };
 
+/* Suspend / resume device operations */
+static struct dev_pm_ops hvc_iucv_pm_ops = {
+	.freeze	  = hvc_iucv_pm_freeze,
+	.thaw	  = hvc_iucv_pm_restore_thaw,
+	.restore  = hvc_iucv_pm_restore_thaw,
+};
+
+/* IUCV HVC device driver */
+static struct device_driver hvc_iucv_driver = {
+	.name = KMSG_COMPONENT,
+	.bus  = &iucv_bus,
+	.pm   = &hvc_iucv_pm_ops,
+};
+
 /**
  * hvc_iucv_alloc() - Allocates a new struct hvc_iucv_private instance
  * @id:			hvc_iucv_table index
@@ -897,14 +976,12 @@ static int __init hvc_iucv_alloc(int id, unsigned int is_console)
 	/* set console flag */
 	priv->is_console = is_console;
 
-	/* finally allocate hvc */
+	/* allocate hvc device */
 	priv->hvc = hvc_alloc(HVC_IUCV_MAGIC + id, /*		  PAGE_SIZE */
 			      HVC_IUCV_MAGIC + id, &hvc_iucv_ops, 256);
 	if (IS_ERR(priv->hvc)) {
 		rc = PTR_ERR(priv->hvc);
-		free_page((unsigned long) priv->sndbuf);
-		kfree(priv);
-		return rc;
+		goto out_error_hvc;
 	}
 
 	/* notify HVC thread instead of using polling */
@@ -915,8 +992,45 @@ static int __init hvc_iucv_alloc(int id, unsigned int is_console)
 	memcpy(priv->srv_name, name, 8);
 	ASCEBC(priv->srv_name, 8);
 
+	/* create and setup device */
+	priv->dev = kzalloc(sizeof(*priv->dev), GFP_KERNEL);
+	if (!priv->dev) {
+		rc = -ENOMEM;
+		goto out_error_dev;
+	}
+	dev_set_name(priv->dev, "hvc_iucv%d", id);
+	dev_set_drvdata(priv->dev, priv);
+	priv->dev->bus = &iucv_bus;
+	priv->dev->parent = iucv_root;
+	priv->dev->driver = &hvc_iucv_driver;
+	priv->dev->release = (void (*)(struct device *)) kfree;
+	rc = device_register(priv->dev);
+	if (rc) {
+		kfree(priv->dev);
+		goto out_error_dev;
+	}
+
 	hvc_iucv_table[id] = priv;
 	return 0;
+
+out_error_dev:
+	hvc_remove(priv->hvc);
+out_error_hvc:
+	free_page((unsigned long) priv->sndbuf);
+	kfree(priv);
+
+	return rc;
+}
+
+/**
+ * hvc_iucv_destroy() - Destroy and free hvc_iucv_private instances
+ */
+static void __init hvc_iucv_destroy(struct hvc_iucv_private *priv)
+{
+	hvc_remove(priv->hvc);
+	device_unregister(priv->dev);
+	free_page((unsigned long) priv->sndbuf);
+	kfree(priv);
 }
 
 /**
@@ -1109,6 +1223,11 @@ static int __init hvc_iucv_init(void)
 		goto out_error;
 	}
 
+	/* register IUCV HVC device driver */
+	rc = driver_register(&hvc_iucv_driver);
+	if (rc)
+		goto out_error;
+
 	/* parse hvc_iucv_allow string and create z/VM user ID filter list */
 	if (hvc_iucv_filter_string) {
 		rc = hvc_iucv_setup_filter(hvc_iucv_filter_string);
@@ -1183,15 +1302,14 @@ out_error_iucv:
 	iucv_unregister(&hvc_iucv_handler, 0);
 out_error_hvc:
 	for (i = 0; i < hvc_iucv_devices; i++)
-		if (hvc_iucv_table[i]) {
-			if (hvc_iucv_table[i]->hvc)
-				hvc_remove(hvc_iucv_table[i]->hvc);
-			kfree(hvc_iucv_table[i]);
-		}
+		if (hvc_iucv_table[i])
+			hvc_iucv_destroy(hvc_iucv_table[i]);
 out_error_memory:
 	mempool_destroy(hvc_iucv_mempool);
 	kmem_cache_destroy(hvc_iucv_buffer_cache);
 out_error:
+	if (hvc_iucv_filter)
+		kfree(hvc_iucv_filter);
 	hvc_iucv_devices = 0; /* ensure that we do not provide any device */
 	return rc;
 }
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 442bb98a282..e5b84db0aa0 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -5,8 +5,7 @@
  *		    Carsten Otte <Cotte@de.ibm.com>
  *		    Martin Schwidefsky <schwidefsky@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999-2001
- *
+ * Copyright IBM Corp. 1999, 2009
  */
 
 #define KMSG_COMPONENT "dasd"
@@ -61,6 +60,7 @@ static int dasd_flush_block_queue(struct dasd_block *);
 static void dasd_device_tasklet(struct dasd_device *);
 static void dasd_block_tasklet(struct dasd_block *);
 static void do_kick_device(struct work_struct *);
+static void do_restore_device(struct work_struct *);
 static void dasd_return_cqr_cb(struct dasd_ccw_req *, void *);
 static void dasd_device_timeout(unsigned long);
 static void dasd_block_timeout(unsigned long);
@@ -109,6 +109,7 @@ struct dasd_device *dasd_alloc_device(void)
 	device->timer.function = dasd_device_timeout;
 	device->timer.data = (unsigned long) device;
 	INIT_WORK(&device->kick_work, do_kick_device);
+	INIT_WORK(&device->restore_device, do_restore_device);
 	device->state = DASD_STATE_NEW;
 	device->target = DASD_STATE_NEW;
 
@@ -512,6 +513,25 @@ void dasd_kick_device(struct dasd_device *device)
 }
 
 /*
+ * dasd_restore_device will schedule a call do do_restore_device to the kernel
+ * event daemon.
+ */
+static void do_restore_device(struct work_struct *work)
+{
+	struct dasd_device *device = container_of(work, struct dasd_device,
+						  restore_device);
+	device->cdev->drv->restore(device->cdev);
+	dasd_put_device(device);
+}
+
+void dasd_restore_device(struct dasd_device *device)
+{
+	dasd_get_device(device);
+	/* queue call to dasd_restore_device to the kernel event daemon. */
+	schedule_work(&device->restore_device);
+}
+
+/*
  * Set the target state for a device and starts the state change.
  */
 void dasd_set_target_state(struct dasd_device *device, int target)
@@ -908,6 +928,12 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
 		DBF_DEV_EVENT(DBF_DEBUG, device, "%s",
 			      "start_IO: -EIO device gone, retry");
 		break;
+	case -EINVAL:
+		/* most likely caused in power management context */
+		DBF_DEV_EVENT(DBF_DEBUG, device, "%s",
+			      "start_IO: -EINVAL device currently "
+			      "not accessible");
+		break;
 	default:
 		/* internal error 11 - unknown rc */
 		snprintf(errorstring, ERRORLENGTH, "11 %d", rc);
@@ -2400,6 +2426,12 @@ int dasd_generic_notify(struct ccw_device *cdev, int event)
 	case CIO_OPER:
 		/* FIXME: add a sanity check. */
 		device->stopped &= ~DASD_STOPPED_DC_WAIT;
+		if (device->stopped & DASD_UNRESUMED_PM) {
+			device->stopped &= ~DASD_UNRESUMED_PM;
+			dasd_restore_device(device);
+			ret = 1;
+			break;
+		}
 		dasd_schedule_device_bh(device);
 		if (device->block)
 			dasd_schedule_block_bh(device->block);
@@ -2410,6 +2442,79 @@ int dasd_generic_notify(struct ccw_device *cdev, int event)
 	return ret;
 }
 
+int dasd_generic_pm_freeze(struct ccw_device *cdev)
+{
+	struct dasd_ccw_req *cqr, *n;
+	int rc;
+	struct list_head freeze_queue;
+	struct dasd_device *device = dasd_device_from_cdev(cdev);
+
+	if (IS_ERR(device))
+		return PTR_ERR(device);
+	/* disallow new I/O  */
+	device->stopped |= DASD_STOPPED_PM;
+	/* clear active requests */
+	INIT_LIST_HEAD(&freeze_queue);
+	spin_lock_irq(get_ccwdev_lock(cdev));
+	rc = 0;
+	list_for_each_entry_safe(cqr, n, &device->ccw_queue, devlist) {
+		/* Check status and move request to flush_queue */
+		if (cqr->status == DASD_CQR_IN_IO) {
+			rc = device->discipline->term_IO(cqr);
+			if (rc) {
+				/* unable to terminate requeust */
+				dev_err(&device->cdev->dev,
+					"Unable to terminate request %p "
+					"on suspend\n", cqr);
+				spin_unlock_irq(get_ccwdev_lock(cdev));
+				dasd_put_device(device);
+				return rc;
+			}
+		}
+		list_move_tail(&cqr->devlist, &freeze_queue);
+	}
+
+	spin_unlock_irq(get_ccwdev_lock(cdev));
+
+	list_for_each_entry_safe(cqr, n, &freeze_queue, devlist) {
+		wait_event(dasd_flush_wq,
+			   (cqr->status != DASD_CQR_CLEAR_PENDING));
+		if (cqr->status == DASD_CQR_CLEARED)
+			cqr->status = DASD_CQR_QUEUED;
+	}
+	/* move freeze_queue to start of the ccw_queue */
+	spin_lock_irq(get_ccwdev_lock(cdev));
+	list_splice_tail(&freeze_queue, &device->ccw_queue);
+	spin_unlock_irq(get_ccwdev_lock(cdev));
+
+	if (device->discipline->freeze)
+		rc = device->discipline->freeze(device);
+
+	dasd_put_device(device);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(dasd_generic_pm_freeze);
+
+int dasd_generic_restore_device(struct ccw_device *cdev)
+{
+	struct dasd_device *device = dasd_device_from_cdev(cdev);
+	int rc = 0;
+
+	if (IS_ERR(device))
+		return PTR_ERR(device);
+
+	dasd_schedule_device_bh(device);
+	if (device->block)
+		dasd_schedule_block_bh(device->block);
+
+	if (device->discipline->restore)
+		rc = device->discipline->restore(device);
+
+	dasd_put_device(device);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(dasd_generic_restore_device);
+
 static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,
 						   void *rdc_buffer,
 						   int rdc_buffer_size,
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index e77666c8e6c..4cac5b54f26 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -1098,6 +1098,7 @@ dasd_get_uid(struct ccw_device *cdev, struct dasd_uid *uid)
 	spin_unlock(&dasd_devmap_lock);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(dasd_get_uid);
 
 /*
  * Register the given device unique identifier into devmap struct.
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index cf0cfdba124..1c28ec3e4cc 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -5,10 +5,9 @@
  *		    Carsten Otte <Cotte@de.ibm.com>
  *		    Martin Schwidefsky <schwidefsky@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
+ * Copyright IBM Corp. 1999, 2009
  * EMC Symmetrix ioctl Copyright EMC Corporation, 2008
  * Author.........: Nigel Hislop <hislop_nigel@emc.com>
- *
  */
 
 #define KMSG_COMPONENT "dasd"
@@ -104,17 +103,6 @@ dasd_eckd_set_online(struct ccw_device *cdev)
 	return dasd_generic_set_online(cdev, &dasd_eckd_discipline);
 }
 
-static struct ccw_driver dasd_eckd_driver = {
-	.name        = "dasd-eckd",
-	.owner       = THIS_MODULE,
-	.ids         = dasd_eckd_ids,
-	.probe       = dasd_eckd_probe,
-	.remove      = dasd_generic_remove,
-	.set_offline = dasd_generic_set_offline,
-	.set_online  = dasd_eckd_set_online,
-	.notify      = dasd_generic_notify,
-};
-
 static const int sizes_trk0[] = { 28, 148, 84 };
 #define LABEL_SIZE 140
 
@@ -3236,6 +3224,98 @@ static void dasd_eckd_dump_sense(struct dasd_device *device,
 		dasd_eckd_dump_sense_ccw(device, req, irb);
 }
 
+int dasd_eckd_pm_freeze(struct dasd_device *device)
+{
+	/*
+	 * the device should be disconnected from our LCU structure
+	 * on restore we will reconnect it and reread LCU specific
+	 * information like PAV support that might have changed
+	 */
+	dasd_alias_remove_device(device);
+	dasd_alias_disconnect_device_from_lcu(device);
+
+	return 0;
+}
+
+int dasd_eckd_restore_device(struct dasd_device *device)
+{
+	struct dasd_eckd_private *private;
+	int is_known, rc;
+	struct dasd_uid temp_uid;
+
+	/* allow new IO again */
+	device->stopped &= ~DASD_STOPPED_PM;
+
+	private = (struct dasd_eckd_private *) device->private;
+
+	/* Read Configuration Data */
+	rc = dasd_eckd_read_conf(device);
+	if (rc)
+		goto out_err;
+
+	/* Generate device unique id and register in devmap */
+	rc = dasd_eckd_generate_uid(device, &private->uid);
+	dasd_get_uid(device->cdev, &temp_uid);
+	if (memcmp(&private->uid, &temp_uid, sizeof(struct dasd_uid)) != 0)
+		dev_err(&device->cdev->dev, "The UID of the DASD has changed\n");
+	if (rc)
+		goto out_err;
+	dasd_set_uid(device->cdev, &private->uid);
+
+	/* register lcu with alias handling, enable PAV if this is a new lcu */
+	is_known = dasd_alias_make_device_known_to_lcu(device);
+	if (is_known < 0)
+		return is_known;
+	if (!is_known) {
+		/* new lcu found */
+		rc = dasd_eckd_validate_server(device); /* will switch pav on */
+		if (rc)
+			goto out_err;
+	}
+
+	/* Read Feature Codes */
+	rc = dasd_eckd_read_features(device);
+	if (rc)
+		goto out_err;
+
+	/* Read Device Characteristics */
+	memset(&private->rdc_data, 0, sizeof(private->rdc_data));
+	rc = dasd_generic_read_dev_chars(device, "ECKD",
+					 &private->rdc_data, 64);
+	if (rc) {
+		DBF_EVENT(DBF_WARNING,
+			  "Read device characteristics failed, rc=%d for "
+			  "device: %s", rc, dev_name(&device->cdev->dev));
+		goto out_err;
+	}
+
+	/* add device to alias management */
+	dasd_alias_add_device(device);
+
+	return 0;
+
+out_err:
+	/*
+	 * if the resume failed for the DASD we put it in
+	 * an UNRESUMED stop state
+	 */
+	device->stopped |= DASD_UNRESUMED_PM;
+	return 0;
+}
+
+static struct ccw_driver dasd_eckd_driver = {
+	.name	     = "dasd-eckd",
+	.owner	     = THIS_MODULE,
+	.ids	     = dasd_eckd_ids,
+	.probe	     = dasd_eckd_probe,
+	.remove      = dasd_generic_remove,
+	.set_offline = dasd_generic_set_offline,
+	.set_online  = dasd_eckd_set_online,
+	.notify      = dasd_generic_notify,
+	.freeze      = dasd_generic_pm_freeze,
+	.thaw	     = dasd_generic_restore_device,
+	.restore     = dasd_generic_restore_device,
+};
 
 /*
  * max_blocks is dependent on the amount of storage that is available
@@ -3274,6 +3354,8 @@ static struct dasd_discipline dasd_eckd_discipline = {
 	.dump_sense_dbf = dasd_eckd_dump_sense_dbf,
 	.fill_info = dasd_eckd_fill_info,
 	.ioctl = dasd_eckd_ioctl,
+	.freeze = dasd_eckd_pm_freeze,
+	.restore = dasd_eckd_restore_device,
 };
 
 static int __init
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 597c6ffdb9f..e21ee735f92 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -2,8 +2,7 @@
  * File...........: linux/drivers/s390/block/dasd_fba.c
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
- *
+ * Copyright IBM Corp. 1999, 2009
  */
 
 #define KMSG_COMPONENT "dasd"
@@ -75,6 +74,9 @@ static struct ccw_driver dasd_fba_driver = {
 	.set_offline = dasd_generic_set_offline,
 	.set_online  = dasd_fba_set_online,
 	.notify      = dasd_generic_notify,
+	.freeze      = dasd_generic_pm_freeze,
+	.thaw	     = dasd_generic_restore_device,
+	.restore     = dasd_generic_restore_device,
 };
 
 static void
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index f97ceb79507..fd63b2f2bda 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -4,8 +4,7 @@
  *		    Horst Hummel <Horst.Hummel@de.ibm.com>
  *		    Martin Schwidefsky <schwidefsky@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
- *
+ * Copyright IBM Corp. 1999, 2009
  */
 
 #ifndef DASD_INT_H
@@ -295,6 +294,10 @@ struct dasd_discipline {
 	int (*fill_geometry) (struct dasd_block *, struct hd_geometry *);
 	int (*fill_info) (struct dasd_device *, struct dasd_information2_t *);
 	int (*ioctl) (struct dasd_block *, unsigned int, void __user *);
+
+	/* suspend/resume functions */
+	int (*freeze) (struct dasd_device *);
+	int (*restore) (struct dasd_device *);
 };
 
 extern struct dasd_discipline *dasd_diag_discipline_pointer;<