merge linus into release branch

Conflicts:

	drivers/acpi/acpi_memhotplug.c

32 files changed, 1073 insertions, 742 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index cfb1fff3787..2dc179b14ce 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -95,7 +95,7 @@ dasd_alloc_device(void)
 	spin_lock_init(&device->mem_lock);
 	spin_lock_init(&device->request_queue_lock);
 	atomic_set (&device->tasklet_scheduled, 0);
-	tasklet_init(&device->tasklet, 
+	tasklet_init(&device->tasklet,
 		     (void (*)(unsigned long)) dasd_tasklet,
 		     (unsigned long) device);
 	INIT_LIST_HEAD(&device->ccw_queue);
@@ -128,7 +128,7 @@ dasd_state_new_to_known(struct dasd_device *device)
 	int rc;
 
 	/*
-	 * As long as the device is not in state DASD_STATE_NEW we want to 
+	 * As long as the device is not in state DASD_STATE_NEW we want to
 	 * keep the reference count > 0.
 	 */
 	dasd_get_device(device);
@@ -336,7 +336,7 @@ dasd_decrease_state(struct dasd_device *device)
 	if (device->state == DASD_STATE_ONLINE &&
 	    device->target <= DASD_STATE_READY)
 		dasd_state_online_to_ready(device);
-	
+
 	if (device->state == DASD_STATE_READY &&
 	    device->target <= DASD_STATE_BASIC)
 		dasd_state_ready_to_basic(device);
@@ -348,7 +348,7 @@ dasd_decrease_state(struct dasd_device *device)
 	if (device->state == DASD_STATE_BASIC &&
 	    device->target <= DASD_STATE_KNOWN)
 		dasd_state_basic_to_known(device);
-	
+
 	if (device->state == DASD_STATE_KNOWN &&
 	    device->target <= DASD_STATE_NEW)
 		dasd_state_known_to_new(device);
@@ -994,7 +994,7 @@ dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
 		      ((irb->scsw.cstat << 8) | irb->scsw.dstat), cqr);
 
  	/* Find out the appropriate era_action. */
-	if (irb->scsw.fctl & SCSW_FCTL_HALT_FUNC) 
+	if (irb->scsw.fctl & SCSW_FCTL_HALT_FUNC)
 		era = dasd_era_fatal;
 	else if (irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END) &&
 		 irb->scsw.cstat == 0 &&
@@ -1004,7 +1004,7 @@ dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
  	        era = dasd_era_fatal; /* don't recover this request */
 	else if (irb->esw.esw0.erw.cons)
 		era = device->discipline->examine_error(cqr, irb);
-	else 
+	else
 		era = dasd_era_recover;
 
 	DBF_DEV_EVENT(DBF_DEBUG, device, "era_code %d", era);
@@ -1287,7 +1287,7 @@ __dasd_start_head(struct dasd_device * device)
 }
 
 /*
- * Remove requests from the ccw queue. 
+ * Remove requests from the ccw queue.
  */
 static void
 dasd_flush_ccw_queue(struct dasd_device * device, int all)
@@ -1450,23 +1450,23 @@ dasd_sleep_on(struct dasd_ccw_req * cqr)
 	wait_queue_head_t wait_q;
 	struct dasd_device *device;
 	int rc;
-	
+
 	device = cqr->device;
 	spin_lock_irq(get_ccwdev_lock(device->cdev));
-	
+
 	init_waitqueue_head (&wait_q);
 	cqr->callback = dasd_wakeup_cb;
 	cqr->callback_data = (void *) &wait_q;
 	cqr->status = DASD_CQR_QUEUED;
 	list_add_tail(&cqr->list, &device->ccw_queue);
-	
+
 	/* let the bh start the request to keep them in order */
 	dasd_schedule_bh(device);
-	
+
 	spin_unlock_irq(get_ccwdev_lock(device->cdev));
 
 	wait_event(wait_q, _wait_for_wakeup(cqr));
-	
+
 	/* Request status is either done or failed. */
 	rc = (cqr->status == DASD_CQR_FAILED) ? -EIO : 0;
 	return rc;
@@ -1568,7 +1568,7 @@ dasd_sleep_on_immediatly(struct dasd_ccw_req * cqr)
 	wait_queue_head_t wait_q;
 	struct dasd_device *device;
 	int rc;
-	
+
 	device = cqr->device;
 	spin_lock_irq(get_ccwdev_lock(device->cdev));
 	rc = _dasd_term_running_cqr(device);
@@ -1576,20 +1576,20 @@ dasd_sleep_on_immediatly(struct dasd_ccw_req * cqr)
 		spin_unlock_irq(get_ccwdev_lock(device->cdev));
 		return rc;
 	}
-	
+
 	init_waitqueue_head (&wait_q);
 	cqr->callback = dasd_wakeup_cb;
 	cqr->callback_data = (void *) &wait_q;
 	cqr->status = DASD_CQR_QUEUED;
 	list_add(&cqr->list, &device->ccw_queue);
-	
+
 	/* let the bh start the request to keep them in order */
 	dasd_schedule_bh(device);
-	
+
 	spin_unlock_irq(get_ccwdev_lock(device->cdev));
 
 	wait_event(wait_q, _wait_for_wakeup(cqr));
-	
+
 	/* Request status is either done or failed. */
 	rc = (cqr->status == DASD_CQR_FAILED) ? -EIO : 0;
 	return rc;
@@ -1725,7 +1725,7 @@ dasd_flush_request_queue(struct dasd_device * device)
 
 	if (!device->request_queue)
 		return;
-	
+
 	spin_lock_irq(&device->request_queue_lock);
 	while (!list_empty(&device->request_queue->queue_head)) {
 		req = elv_next_request(device->request_queue);
@@ -1834,7 +1834,6 @@ dasd_exit(void)
 	}
 	dasd_gendisk_exit();
 	dasd_devmap_exit();
-	devfs_remove("dasd");
 	if (dasd_debug_area != NULL) {
 		debug_unregister(dasd_debug_area);
 		dasd_debug_area = NULL;
@@ -1855,15 +1854,34 @@ dasd_generic_probe (struct ccw_device *cdev,
 {
 	int ret;
 
+	ret = ccw_device_set_options(cdev, CCWDEV_DO_PATHGROUP);
+	if (ret) {
+		printk(KERN_WARNING
+		       "dasd_generic_probe: could not set ccw-device options "
+		       "for %s\n", cdev->dev.bus_id);
+		return ret;
+	}
 	ret = dasd_add_sysfs_files(cdev);
 	if (ret) {
 		printk(KERN_WARNING
 		       "dasd_generic_probe: could not add sysfs entries "
 		       "for %s\n", cdev->dev.bus_id);
-	} else {
-		cdev->handler = &dasd_int_handler;
+		return ret;
 	}
+	cdev->handler = &dasd_int_handler;
 
+	/*
+	 * Automatically online either all dasd devices (dasd_autodetect)
+	 * or all devices specified with dasd= parameters during
+	 * initial probe.
+	 */
+	if ((dasd_get_feature(cdev, DASD_FEATURE_INITIAL_ONLINE) > 0 ) ||
+	    (dasd_autodetect && dasd_busid_known(cdev->dev.bus_id) != 0))
+		ret = ccw_device_set_online(cdev);
+	if (ret)
+		printk(KERN_WARNING
+		       "dasd_generic_probe: could not initially online "
+		       "ccw-device %s\n", cdev->dev.bus_id);
 	return ret;
 }
 
@@ -1911,6 +1929,8 @@ dasd_generic_set_online (struct ccw_device *cdev,
 	struct dasd_device *device;
 	int rc;
 
+	/* first online clears initial online feature flag */
+	dasd_set_feature(cdev, DASD_FEATURE_INITIAL_ONLINE, 0);
 	device = dasd_create_device(cdev);
 	if (IS_ERR(device))
 		return PTR_ERR(device);
@@ -2065,31 +2085,6 @@ dasd_generic_notify(struct ccw_device *cdev, int event)
 	return ret;
 }
 
-/*
- * Automatically online either all dasd devices (dasd_autodetect) or
- * all devices specified with dasd= parameters.
- */
-static int
-__dasd_auto_online(struct device *dev, void *data)
-{
-	struct ccw_device *cdev;
-
-	cdev = to_ccwdev(dev);
-	if (dasd_autodetect || dasd_busid_known(cdev->dev.bus_id) == 0)
-		ccw_device_set_online(cdev);
-	return 0;
-}
-
-void
-dasd_generic_auto_online (struct ccw_driver *dasd_discipline_driver)
-{
-	struct device_driver *drv;
-
-	drv = get_driver(&dasd_discipline_driver->driver);
-	driver_for_each_device(drv, NULL, NULL, __dasd_auto_online);
-	put_driver(drv);
-}
-
 
 static int __init
 dasd_init(void)
@@ -2111,9 +2106,6 @@ dasd_init(void)
 
 	dasd_diag_discipline_pointer = NULL;
 
-	rc = devfs_mk_dir("dasd");
-	if (rc)
-		goto failed;
 	rc = dasd_devmap_init();
 	if (rc)
 		goto failed;
@@ -2170,23 +2162,4 @@ EXPORT_SYMBOL_GPL(dasd_generic_remove);
 EXPORT_SYMBOL_GPL(dasd_generic_notify);
 EXPORT_SYMBOL_GPL(dasd_generic_set_online);
 EXPORT_SYMBOL_GPL(dasd_generic_set_offline);
-EXPORT_SYMBOL_GPL(dasd_generic_auto_online);
 
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: 1
- * tab-width: 8
- * End:
- */
diff --git a/drivers/s390/block/dasd_3370_erp.c b/drivers/s390/block/dasd_3370_erp.c
index 1d11c2a9525..1ddab8991d9 100644
--- a/drivers/s390/block/dasd_3370_erp.c
+++ b/drivers/s390/block/dasd_3370_erp.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_3370_erp.c
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
@@ -12,10 +12,10 @@
 
 
 /*
- * DASD_3370_ERP_EXAMINE 
+ * DASD_3370_ERP_EXAMINE
  *
  * DESCRIPTION
- *   Checks only for fatal/no/recover error. 
+ *   Checks only for fatal/no/recover error.
  *   A detailed examination of the sense data is done later outside
  *   the interrupt handler.
  *
@@ -23,7 +23,7 @@
  *   'Chapter 7. 3370 Sense Data'.
  *
  * RETURN VALUES
- *   dasd_era_none	no error 
+ *   dasd_era_none	no error
  *   dasd_era_fatal	for all fatal (unrecoverable errors)
  *   dasd_era_recover	for all others.
  */
@@ -82,22 +82,3 @@ dasd_3370_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
 	return dasd_era_recover;
 
 }				/* END dasd_3370_erp_examine */
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4 
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: 1
- * tab-width: 8
- * End:
- */
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
index 2ed51562319..669805d4402 100644
--- a/drivers/s390/block/dasd_3990_erp.c
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -1,6 +1,6 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_3990_erp.c
- * Author(s)......: Horst  Hummel    <Horst.Hummel@de.ibm.com> 
+ * Author(s)......: Horst  Hummel    <Horst.Hummel@de.ibm.com>
  *		    Holger Smolinski <Holger.Smolinski@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000, 2001
@@ -25,23 +25,23 @@ struct DCTL_data {
 } __attribute__ ((packed));
 
 /*
- ***************************************************************************** 
+ *****************************************************************************
  * SECTION ERP EXAMINATION
- ***************************************************************************** 
+ *****************************************************************************
  */
 
 /*
- * DASD_3990_ERP_EXAMINE_24 
+ * DASD_3990_ERP_EXAMINE_24
  *
  * DESCRIPTION
- *   Checks only for fatal (unrecoverable) error. 
+ *   Checks only for fatal (unrecoverable) error.
  *   A detailed examination of the sense data is done later outside
  *   the interrupt handler.
  *
  *   Each bit configuration leading to an action code 2 (Exit with
  *   programming error or unusual condition indication)
  *   are handled as fatal errorīs.
- * 
+ *
  *   All other configurations are handled as recoverable errors.
  *
  * RETURN VALUES
@@ -93,15 +93,15 @@ dasd_3990_erp_examine_24(struct dasd_ccw_req * cqr, char *sense)
 }				/* END dasd_3990_erp_examine_24 */
 
 /*
- * DASD_3990_ERP_EXAMINE_32 
+ * DASD_3990_ERP_EXAMINE_32
  *
  * DESCRIPTION
- *   Checks only for fatal/no/recoverable error. 
+ *   Checks only for fatal/no/recoverable error.
  *   A detailed examination of the sense data is done later outside
  *   the interrupt handler.
  *
  * RETURN VALUES
- *   dasd_era_none	no error 
+ *   dasd_era_none	no error
  *   dasd_era_fatal	for all fatal (unrecoverable errors)
  *   dasd_era_recover	for recoverable others.
  */
@@ -128,10 +128,10 @@ dasd_3990_erp_examine_32(struct dasd_ccw_req * cqr, char *sense)
 }				/* end dasd_3990_erp_examine_32 */
 
 /*
- * DASD_3990_ERP_EXAMINE 
+ * DASD_3990_ERP_EXAMINE
  *
  * DESCRIPTION
- *   Checks only for fatal/no/recover error. 
+ *   Checks only for fatal/no/recover error.
  *   A detailed examination of the sense data is done later outside
  *   the interrupt handler.
  *
@@ -139,7 +139,7 @@ dasd_3990_erp_examine_32(struct dasd_ccw_req * cqr, char *sense)
  *   'Chapter 7. Error Recovery Procedures'.
  *
  * RETURN VALUES
- *   dasd_era_none	no error 
+ *   dasd_era_none	no error
  *   dasd_era_fatal	for all fatal (unrecoverable errors)
  *   dasd_era_recover	for all others.
  */
@@ -178,18 +178,18 @@ dasd_3990_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
 }				/* END dasd_3990_erp_examine */
 
 /*
- ***************************************************************************** 
+ *****************************************************************************
  * SECTION ERP HANDLING
- ***************************************************************************** 
+ *****************************************************************************
  */
 /*
- ***************************************************************************** 
+ *****************************************************************************
  * 24 and 32 byte sense ERP functions
- ***************************************************************************** 
+ *****************************************************************************
  */
 
 /*
- * DASD_3990_ERP_CLEANUP 
+ * DASD_3990_ERP_CLEANUP
  *
  * DESCRIPTION
  *   Removes the already build but not necessary ERP request and sets
@@ -197,10 +197,10 @@ dasd_3990_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
  *
  *  PARAMETER
  *   erp		request to be blocked
- *   final_status	either DASD_CQR_DONE or DASD_CQR_FAILED 
+ *   final_status	either DASD_CQR_DONE or DASD_CQR_FAILED
  *
  * RETURN VALUES
- *   cqr		original cqr		   
+ *   cqr		original cqr
  */
 static struct dasd_ccw_req *
 dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status)
@@ -214,7 +214,7 @@ dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status)
 }				/* end dasd_3990_erp_cleanup */
 
 /*
- * DASD_3990_ERP_BLOCK_QUEUE 
+ * DASD_3990_ERP_BLOCK_QUEUE
  *
  * DESCRIPTION
  *   Block the given device request queue to prevent from further
@@ -237,7 +237,7 @@ dasd_3990_erp_block_queue(struct dasd_ccw_req * erp, int expires)
 }
 
 /*
- * DASD_3990_ERP_INT_REQ 
+ * DASD_3990_ERP_INT_REQ
  *
  * DESCRIPTION
  *   Handles 'Intervention Required' error.
@@ -277,7 +277,7 @@ dasd_3990_erp_int_req(struct dasd_ccw_req * erp)
 }				/* end dasd_3990_erp_int_req */
 
 /*
- * DASD_3990_ERP_ALTERNATE_PATH 
+ * DASD_3990_ERP_ALTERNATE_PATH
  *
  * DESCRIPTION
  *   Repeat the operation on a different channel path.
@@ -330,15 +330,15 @@ dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp)
  * DASD_3990_ERP_DCTL
  *
  * DESCRIPTION
- *   Setup cqr to do the Diagnostic Control (DCTL) command with an 
+ *   Setup cqr to do the Diagnostic Control (DCTL) command with an
  *   Inhibit Write subcommand (0x20) and the given modifier.
  *
  *  PARAMETER
  *   erp		pointer to the current (failed) ERP
  *   modifier		subcommand modifier
- *   
+ *
  * RETURN VALUES
- *   dctl_cqr		pointer to NEW dctl_cqr 
+ *   dctl_cqr		pointer to NEW dctl_cqr
  *
  */
 static struct dasd_ccw_req *
@@ -386,7 +386,7 @@ dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier)
 }				/* end dasd_3990_erp_DCTL */
 
 /*
- * DASD_3990_ERP_ACTION_1 
+ * DASD_3990_ERP_ACTION_1
  *
  * DESCRIPTION
  *   Setup ERP to do the ERP action 1 (see Reference manual).
@@ -415,7 +415,7 @@ dasd_3990_erp_action_1(struct dasd_ccw_req * erp)
 }				/* end dasd_3990_erp_action_1 */
 
 /*
- * DASD_3990_ERP_ACTION_4 
+ * DASD_3990_ERP_ACTION_4
  *
  * DESCRIPTION
  *   Setup ERP to do the ERP action 4 (see Reference manual).
@@ -453,11 +453,11 @@ dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
 
 		if (sense[25] == 0x1D) {	/* state change pending */
 
-			DEV_MESSAGE(KERN_INFO, device, 
+			DEV_MESSAGE(KERN_INFO, device,
 				    "waiting for state change pending "
 				    "interrupt, %d retries left",
 				    erp->retries);
-			
+
 			dasd_3990_erp_block_queue(erp, 30*HZ);
 
                 } else if (sense[25] == 0x1E) {	/* busy */
@@ -469,9 +469,9 @@ dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
 		} else {
 
 			/* no state change pending - retry */
-			DEV_MESSAGE (KERN_INFO, device, 
+			DEV_MESSAGE (KERN_INFO, device,
 				     "redriving request immediately, "
-				     "%d retries left", 
+				     "%d retries left",
 				     erp->retries);
 			erp->status = DASD_CQR_QUEUED;
 		}
@@ -482,13 +482,13 @@ dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
 }				/* end dasd_3990_erp_action_4 */
 
 /*
- ***************************************************************************** 
+ *****************************************************************************
  * 24 byte sense ERP functions (only)
- ***************************************************************************** 
+ *****************************************************************************
  */
 
 /*
- * DASD_3990_ERP_ACTION_5 
+ * DASD_3990_ERP_ACTION_5
  *
  * DESCRIPTION
  *   Setup ERP to do the ERP action 5 (see Reference manual).
@@ -523,7 +523,7 @@ dasd_3990_erp_action_5(struct dasd_ccw_req * erp)
  *
  * PARAMETER
  *   sense		current sense data
- *   
+ *
  * RETURN VALUES
  *   void
  */
@@ -1150,9 +1150,9 @@ dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense)
  * PARAMETER
  *   erp		current erp_head
  *   sense		current sense data
- * 
+ *
  * RETURN VALUES
- *   erp		'new' erp_head - pointer to new ERP 
+ *   erp		'new' erp_head - pointer to new ERP
  */
 static struct dasd_ccw_req *
 dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense)
@@ -1185,7 +1185,7 @@ dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense)
 }				/* end dasd_3990_erp_com_rej */
 
 /*
- * DASD_3990_ERP_BUS_OUT 
+ * DASD_3990_ERP_BUS_OUT
  *
  * DESCRIPTION
  *   Handles 24 byte 'Bus Out Parity Check' error.
@@ -1483,7 +1483,7 @@ dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense)
  *
  * PARAMETER
  *   erp		already added default ERP
- *		
+ *
  * RETURN VALUES
  *   erp		new erp_head - pointer to new ERP
  */
@@ -1527,11 +1527,11 @@ dasd_3990_erp_file_prot(struct dasd_ccw_req * erp)
 }				/* end dasd_3990_erp_file_prot */
 
 /*
- * DASD_3990_ERP_INSPECT_24 
+ * DASD_3990_ERP_INSPECT_24
  *
  * DESCRIPTION
  *   Does a detailed inspection of the 24 byte sense data
- *   and sets up a related error recovery action.  
+ *   and sets up a related error recovery action.
  *
  * PARAMETER
  *   sense		sense data of the actual error
@@ -1602,13 +1602,13 @@ dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense)
 }				/* END dasd_3990_erp_inspect_24 */
 
 /*
- ***************************************************************************** 
+ *****************************************************************************
  * 32 byte sense ERP functions (only)
- ***************************************************************************** 
+ *****************************************************************************
  */
 
 /*
- * DASD_3990_ERPACTION_10_32 
+ * DASD_3990_ERPACTION_10_32
  *
  * DESCRIPTION
  *   Handles 32 byte 'Action 10' of Single Program Action Codes.
@@ -1616,7 +1616,7 @@ dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense)
  *
  * PARAMETER
  *   erp		current erp_head
- *   sense		current sense data 
+ *   sense		current sense data
  * RETURN VALUES
  *   erp		modified erp_head
  */
@@ -1640,18 +1640,18 @@ dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense)
  *
  * DESCRIPTION
  *   Handles 32 byte 'Action 1B' of Single Program Action Codes.
- *   A write operation could not be finished because of an unexpected 
+ *   A write operation could not be finished because of an unexpected
  *   condition.
- *   The already created 'default erp' is used to get the link to 
- *   the erp chain, but it can not be used for this recovery 
+ *   The already created 'default erp' is used to get the link to
+ *   the erp chain, but it can not be used for this recovery
  *   action because it contains no DE/LO data space.
  *
  * PARAMETER
  *   default_erp	already added default erp.
- *   sense		current sense data 
+ *   sense		current sense data
  *
  * RETURN VALUES
- *   erp		new erp or 
+ *   erp		new erp or
  *			default_erp in case of imprecise ending or error
  */
 static struct dasd_ccw_req *
@@ -1789,16 +1789,16 @@ dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
  * DASD_3990_UPDATE_1B
  *
  * DESCRIPTION
- *   Handles the update to the 32 byte 'Action 1B' of Single Program 
+ *   Handles the update to the 32 byte 'Action 1B' of Single Program
  *   Action Codes in case the first action was not successful.
  *   The already created 'previous_erp' is the currently not successful
- *   ERP. 
+ *   ERP.
  *
  * PARAMETER
  *   previous_erp	already created previous erp.
- *   sense		current sense data 
+ *   sense		current sense data
  * RETURN VALUES
- *   erp		modified erp 
+ *   erp		modified erp
  */
 static struct dasd_ccw_req *
 dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense)
@@ -1897,7 +1897,7 @@ dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense)
 }				/* end dasd_3990_update_1B */
 
 /*
- * DASD_3990_ERP_COMPOUND_RETRY 
+ * DASD_3990_ERP_COMPOUND_RETRY
  *
  * DESCRIPTION
  *   Handles the compound ERP action retry code.
@@ -1943,7 +1943,7 @@ dasd_3990_erp_compound_retry(struct dasd_ccw_req * erp, char *sense)
 }				/* end dasd_3990_erp_compound_retry */
 
 /*
- * DASD_3990_ERP_COMPOUND_PATH 
+ * DASD_3990_ERP_COMPOUND_PATH
  *
  * DESCRIPTION
  *   Handles the compound ERP action for retry on alternate
@@ -1965,7 +1965,7 @@ dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense)
 		dasd_3990_erp_alternate_path(erp);
 
 		if (erp->status == DASD_CQR_FAILED) {
-			/* reset the lpm and the status to be able to 
+			/* reset the lpm and the status to be able to
 			 * try further actions. */
 
 			erp->lpm = 0;
@@ -1980,7 +1980,7 @@ dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense)
 }				/* end dasd_3990_erp_compound_path */
 
 /*
- * DASD_3990_ERP_COMPOUND_CODE 
+ * DASD_3990_ERP_COMPOUND_CODE
  *
  * DESCRIPTION
  *   Handles the compound ERP action for retry code.
@@ -2001,18 +2001,18 @@ dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense)
 
 		switch (sense[28]) {
 		case 0x17:
-			/* issue a Diagnostic Control command with an 
+			/* issue a Diagnostic Control command with an
 			 * Inhibit Write subcommand and controler modifier */
 			erp = dasd_3990_erp_DCTL(erp, 0x20);
 			break;
-			
+
 		case 0x25:
 			/* wait for 5 seconds and retry again */
 			erp->retries = 1;
-			
+
 			dasd_3990_erp_block_queue (erp, 5*HZ);
 			break;
-			
+
 		default:
 			/* should not happen - continue */
 			break;
@@ -2026,7 +2026,7 @@ dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense)
 }				/* end dasd_3990_erp_compound_code */
 
 /*
- * DASD_3990_ERP_COMPOUND_CONFIG 
+ * DASD_3990_ERP_COMPOUND_CONFIG
  *
  * DESCRIPTION
  *   Handles the compound ERP action for configruation
@@ -2063,10 +2063,10 @@ dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense)
 }				/* end dasd_3990_erp_compound_config */
 
 /*
- * DASD_3990_ERP_COMPOUND 
+ * DASD_3990_ERP_COMPOUND
  *
  * DESCRIPTION
- *   Does the further compound program action if 
+ *   Does the further compound program action if
  *   compound retry was not successful.
  *
  * PARAMETER
@@ -2110,11 +2110,11 @@ dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense)
 }				/* end dasd_3990_erp_compound */
 
 /*
- * DASD_3990_ERP_INSPECT_32 
+ * DASD_3990_ERP_INSPECT_32
  *
  * DESCRIPTION
  *   Does a detailed inspection of the 32 byte sense data
- *   and sets up a related error recovery action.  
+ *   and sets up a related error recovery action.
  *
  * PARAMETER
  *   sense		sense data of the actual error
@@ -2228,9 +2228,9 @@ dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense)
 }				/* end dasd_3990_erp_inspect_32 */
 
 /*
- ***************************************************************************** 
+ *****************************************************************************
  * main ERP control fuctions (24 and 32 byte sense)
- ***************************************************************************** 
+ *****************************************************************************
  */
 
 /*
@@ -2243,7 +2243,7 @@ dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense)
  * PARAMETER
  *   erp		pointer to the currently created default ERP
  * RETURN VALUES
- *   erp_new		contens was possibly modified 
+ *   erp_new		contens was possibly modified
  */
 static struct dasd_ccw_req *
 dasd_3990_erp_inspect(struct dasd_ccw_req * erp)
@@ -2272,14 +2272,14 @@ dasd_3990_erp_inspect(struct dasd_ccw_req * erp)
 
 /*
  * DASD_3990_ERP_ADD_ERP
- * 
+ *
  * DESCRIPTION
  *   This funtion adds an additional request block (ERP) to the head of
  *   the given cqr (or erp).
  *   This erp is initialized as an default erp (retry TIC)
  *
  * PARAMETER
- *   cqr		head of the current ERP-chain (or single cqr if 
+ *   cqr		head of the current ERP-chain (or single cqr if
  *			first error)
  * RETURN VALUES
  *   erp		pointer to new ERP-chain head
@@ -2332,15 +2332,15 @@ dasd_3990_erp_add_erp(struct dasd_ccw_req * cqr)
 }
 
 /*
- * DASD_3990_ERP_ADDITIONAL_ERP 
- * 
+ * DASD_3990_ERP_ADDITIONAL_ERP
+ *
  * DESCRIPTION
  *   An additional ERP is needed to handle the current error.
  *   Add ERP to the head of the ERP-chain containing the ERP processing
  *   determined based on the sense data.
  *
  * PARAMETER
- *   cqr		head of the current ERP-chain (or single cqr if 
+ *   cqr		head of the current ERP-chain (or single cqr if
  *			first error)
  *
  * RETURN VALUES
@@ -2376,7 +2376,7 @@ dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr)
  *   24 byte sense byte 25 and 27 is set as well.
  *
  * PARAMETER
- *   cqr1		first cqr, which will be compared with the 
+ *   cqr1		first cqr, which will be compared with the
  *   cqr2		second cqr.
  *
  * RETURN VALUES
@@ -2415,7 +2415,7 @@ dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1, struct dasd_ccw_req *cqr2)
  *   cqr		failed cqr (either original cqr or already an erp)
  *
  * RETURN VALUES
- *   erp		erp-pointer to the already defined error 
+ *   erp		erp-pointer to the already defined error
  *			recovery procedure OR
  *			NULL if a 'new' error occurred.
  */
@@ -2451,10 +2451,10 @@ dasd_3990_erp_in_erp(struct dasd_ccw_req *cqr)
  * DASD_3990_ERP_FURTHER_ERP (24 & 32 byte sense)
  *
  * DESCRIPTION
- *   No retry is left for the current ERP. Check what has to be done 
+ *   No retry is left for the current ERP. Check what has to be done
  *   with the ERP.
  *     - do further defined ERP action or
- *     - wait for interrupt or	
+ *     - wait for interrupt or
  *     - exit with permanent error
  *
  * PARAMETER
@@ -2485,7 +2485,7 @@ dasd_3990_erp_further_erp(struct dasd_ccw_req *erp)
 
 		if (!(sense[2] & DASD_SENSE_BIT_0)) {
 
-			/* issue a Diagnostic Control command with an 
+			/* issue a Diagnostic Control command with an
 			 * Inhibit Write subcommand */
 
 			switch (sense[25]) {
@@ -2535,14 +2535,14 @@ dasd_3990_erp_further_erp(struct dasd_ccw_req *erp)
 }				/* end dasd_3990_erp_further_erp */
 
 /*
- * DASD_3990_ERP_HANDLE_MATCH_ERP 
+ * DASD_3990_ERP_HANDLE_MATCH_ERP
  *
  * DESCRIPTION
  *   An error occurred again and an ERP has been detected which is already
- *   used to handle this error (e.g. retries). 
+ *   used to handle this error (e.g. retries).
  *   All prior ERP's are asumed to be successful and therefore removed
  *   from queue.
- *   If retry counter of matching erp is already 0, it is checked if further 
+ *   If retry counter of matching erp is already 0, it is checked if further
  *   action is needed (besides retry) or if the ERP has failed.
  *
  * PARAMETER
@@ -2631,7 +2631,7 @@ dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head,
  *   erp		erp-pointer to the head of the ERP action chain.
  *			This means:
  *			 - either a ptr to an additional ERP cqr or
- *			 - the original given cqr (which's status might 
+ *			 - the original given cqr (which's status might
  *			   be modified)
  */
 struct dasd_ccw_req *
@@ -2723,22 +2723,3 @@ dasd_3990_erp_action(struct dasd_ccw_req * cqr)
 	return erp;
 
 }				/* end dasd_3990_erp_action */
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4 
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: 1
- * tab-width: 8
- * End:
- */
diff --git a/drivers/s390/block/dasd_9336_erp.c b/drivers/s390/block/dasd_9336_erp.c
index dc861446d05..6e082688475 100644
--- a/drivers/s390/block/dasd_9336_erp.c
+++ b/drivers/s390/block/dasd_9336_erp.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_9336_erp.c
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
@@ -12,10 +12,10 @@
 
 
 /*
- * DASD_9336_ERP_EXAMINE 
+ * DASD_9336_ERP_EXAMINE
  *
  * DESCRIPTION
- *   Checks only for fatal/no/recover error. 
+ *   Checks only for fatal/no/recover error.
  *   A detailed examination of the sense data is done later outside
  *   the interrupt handler.
  *
@@ -23,7 +23,7 @@
  *   'Chapter 7. 9336 Sense Data'.
  *
  * RETURN VALUES
- *   dasd_era_none	no error 
+ *   dasd_era_none	no error
  *   dasd_era_fatal	for all fatal (unrecoverable errors)
  *   dasd_era_recover	for all others.
  */
@@ -39,22 +39,3 @@ dasd_9336_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
 	return dasd_era_recover;
 
 }				/* END dasd_9336_erp_examine */
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4 
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: 1
- * tab-width: 8
- * End:
- */
diff --git a/drivers/s390/block/dasd_9343_erp.c b/drivers/s390/block/dasd_9343_erp.c
index 4a5b79569aa..ddecb9808ed 100644
--- a/drivers/s390/block/dasd_9343_erp.c
+++ b/drivers/s390/block/dasd_9343_erp.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_9345_erp.c
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index 216bc4fba19..9e9ae717960 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -27,7 +27,7 @@
 #include "dasd_int.h"
 
 kmem_cache_t *dasd_page_cache;
-EXPORT_SYMBOL(dasd_page_cache);
+EXPORT_SYMBOL_GPL(dasd_page_cache);
 
 /*
  * dasd_devmap_t is used to store the features and the relation
@@ -49,6 +49,20 @@ struct dasd_devmap {
 };
 
 /*
+ * dasd_servermap is used to store the server_id of all storage servers
+ * accessed by DASD device driver.
+ */
+struct dasd_servermap {
+	struct list_head list;
+	struct server_id {
+		char vendor[4];
+		char serial[15];
+	} sid;
+};
+
+static struct list_head dasd_serverlist;
+
+/*
  * Parameter parsing functions for dasd= parameter. The syntax is:
  *   <devno>		: (0x)?[0-9a-fA-F]+
  *   <busid>		: [0-0a-f]\.[0-9a-f]\.(0x)?[0-9a-fA-F]+
@@ -64,6 +78,8 @@ struct dasd_devmap {
 
 int dasd_probeonly =  0;	/* is true, when probeonly mode is active */
 int dasd_autodetect = 0;	/* is true, when autodetection is active */
+int dasd_nopav = 0;		/* is true, when PAV is disabled */
+EXPORT_SYMBOL_GPL(dasd_nopav);
 
 /*
  * char *dasd[] is intended to hold the ranges supplied by the dasd= statement
@@ -123,7 +139,7 @@ static inline int
 dasd_busid(char **str, int *id0, int *id1, int *devno)
 {
 	int val, old_style;
- 
+
 	/* check for leading '0x' */
 	old_style = 0;
 	if ((*str)[0] == '0' && (*str)[1] == 'x') {
@@ -179,7 +195,7 @@ dasd_feature_list(char *str, char **endp)
 	features = 0;
 
 	while (1) {
-		for (len = 0; 
+		for (len = 0;
 		     str[len] && str[len] != ':' && str[len] != ')'; len++);
 		if (len == 2 && !strncmp(str, "ro", 2))
 			features |= DASD_FEATURE_READONLY;
@@ -228,19 +244,24 @@ dasd_parse_keyword( char *parsestring ) {
 		length = strlen(parsestring);
 		residual_str = parsestring + length;
         }
-	if (strncmp ("autodetect", parsestring, length) == 0) {
+	if (strncmp("autodetect", parsestring, length) == 0) {
 		dasd_autodetect = 1;
 		MESSAGE (KERN_INFO, "%s",
 			 "turning to autodetection mode");
                 return residual_str;
         }
-        if (strncmp ("probeonly", parsestring, length) == 0) {
+	if (strncmp("probeonly", parsestring, length) == 0) {
 		dasd_probeonly = 1;
 		MESSAGE(KERN_INFO, "%s",
 			"turning to probeonly mode");
                 return residual_str;
         }
-        if (strncmp ("fixedbuffers", parsestring, length) == 0) {
+	if (strncmp("nopav", parsestring, length) == 0) {
+		dasd_nopav = 1;
+		MESSAGE(KERN_INFO, "%s", "disable PAV mode");
+		return residual_str;
+	}
+	if (strncmp("fixedbuffers", parsestring, length) == 0) {
 		if (dasd_page_cache)
 			return residual_str;
 		dasd_page_cache =
@@ -294,6 +315,8 @@ dasd_parse_range( char *parsestring ) {
 	features = dasd_feature_list(str, &str);
 	if (features < 0)
 		return ERR_PTR(-EINVAL);
+	/* each device in dasd= parameter should be set initially online */
+	features |= DASD_FEATURE_INITIAL_ONLINE;
 	while (from <= to) {
 		sprintf(bus_id, "%01x.%01x.%04x",
 			from_id0, from_id1, from++);
@@ -359,7 +382,7 @@ dasd_parse(void)
  * Add a devmap for the device specified by busid. It is possible that
  * the devmap already exists (dasd= parameter). The order of the devices
  * added through this function will define the kdevs for the individual
- * devices. 
+ * devices.
  */
 static struct dasd_devmap *
 dasd_add_busid(char *bus_id, int features)
@@ -368,7 +391,7 @@ dasd_add_busid(char *bus_id, int features)
 	int hash;
 
 	new = (struct dasd_devmap *)
-		kmalloc(sizeof(struct dasd_devmap), GFP_KERNEL);
+		kzalloc(sizeof(struct dasd_devmap), GFP_KERNEL);
 	if (!new)
 		return ERR_PTR(-ENOMEM);
 	spin_lock(&dasd_devmap_lock);
@@ -630,7 +653,8 @@ dasd_ro_show(struct device *dev, struct device_attribute *attr, char *buf)
 }
 
 static ssize_t
-dasd_ro_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+dasd_ro_store(struct device *dev, struct device_attribute *attr,
+	      const char *buf, size_t count)
 {
 	struct dasd_devmap *devmap;
 	int ro_flag;
@@ -658,7 +682,7 @@ static DEVICE_ATTR(readonly, 0644, dasd_ro_show, dasd_ro_store);
  * use_diag controls whether the driver should use diag rather than ssch
  * to talk to the device
  */
-static ssize_t 
+static ssize_t
 dasd_use_diag_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct dasd_devmap *devmap;
@@ -673,7 +697,8 @@ dasd_use_diag_show(struct device *dev, struct device_attribute *attr, char *buf)
 }
 
 static ssize_t
-dasd_use_diag_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+dasd_use_diag_store(struct device *dev, struct device_attribute *attr,
+		    const char *buf, size_t count)
 {
 	struct dasd_devmap *devmap;
 	ssize_t rc;
@@ -697,11 +722,11 @@ dasd_use_diag_store(struct device *dev, struct device_attribute *attr, const cha
 	return rc;
 }
 
-static
-DEVICE_ATTR(use_diag, 0644, dasd_use_diag_show, dasd_use_diag_store);
+static DEVICE_ATTR(use_diag, 0644, dasd_use_diag_show, dasd_use_diag_store);
 
 static ssize_t
-dasd_discipline_show(struct device *dev, struct device_attribute *attr, char *buf)
+dasd_discipline_show(struct device *dev, struct device_attribute *attr,
+		     char *buf)
 {
 	struct dasd_devmap *devmap;
 	char *dname;
@@ -834,6 +859,38 @@ static struct attribute_group dasd_attr_group = {
 	.attrs = dasd_attrs,
 };
 
+/*
+ * Check if the related storage server is already contained in the
+ * dasd_serverlist. If server is not contained, create new entry.
+ * Return 0 if server was already in serverlist,
+ *	  1 if the server was added successfully
+ *	 <0 in case of error.
+ */
+static int
+dasd_add_server(struct dasd_uid *uid)
+{
+	struct dasd_servermap *new, *tmp;
+
+	/* check if server is already contained */
+	list_for_each_entry(tmp, &dasd_serverlist, list)
+	  // normale cmp?
+		if (strncmp(tmp->sid.vendor, uid->vendor,
+			    sizeof(tmp->sid.vendor)) == 0
+		    && strncmp(tmp->sid.serial, uid->serial,
+			       sizeof(tmp->sid.serial)) == 0)
+			return 0;
+
+	new = (struct dasd_servermap *)
+		kzalloc(sizeof(struct dasd_servermap), GFP_KERNEL);
+	if (!new)
+		return -ENOMEM;
+
+	strncpy(new->sid.vendor, uid->vendor, sizeof(new->sid.vendor));
+	strncpy(new->sid.serial, uid->serial, sizeof(new->sid.serial));
+	list_add(&new->list, &dasd_serverlist);
+	return 1;
+}
+
 
 /*
  * Return copy of the device unique identifier.
@@ -854,21 +911,26 @@ dasd_get_uid(struct ccw_device *cdev, struct dasd_uid *uid)
 
 /*
  * Register the given device unique identifier into devmap struct.
+ * Return 0 if server was already in serverlist,
+ *	  1 if the server was added successful
+ *	 <0 in case of error.
  */
 int
 dasd_set_uid(struct ccw_device *cdev, struct dasd_uid *uid)
 {
 	struct dasd_devmap *devmap;
+	int rc;
 
 	devmap = dasd_find_busid(cdev->dev.bus_id);
 	if (IS_ERR(devmap))
 		return PTR_ERR(devmap);
 	spin_lock(&dasd_devmap_lock);
 	devmap->uid = *uid;
+	rc = dasd_add_server(uid);
 	spin_unlock(&dasd_devmap_lock);
-	return 0;
+	return rc;
 }
-EXPORT_SYMBOL(dasd_set_uid);
+EXPORT_SYMBOL_GPL(dasd_set_uid);
 
 /*
  * Return value of the specified feature.
@@ -880,7 +942,7 @@ dasd_get_feature(struct ccw_device *cdev, int feature)
 
 	devmap = dasd_find_busid(cdev->dev.bus_id);
 	if (IS_ERR(devmap))
-		return (int) PTR_ERR(devmap);
+		return PTR_ERR(devmap);
 
 	return ((devmap->features & feature) != 0);
 }
@@ -896,7 +958,7 @@ dasd_set_feature(struct ccw_device *cdev, int feature, int flag)
 
 	devmap = dasd_find_busid(cdev->dev.bus_id);
 	if (IS_ERR(devmap))
-		return (int) PTR_ERR(devmap);
+		return PTR_ERR(devmap);
 
 	spin_lock(&dasd_devmap_lock);
 	if (flag)
@@ -932,8 +994,10 @@ dasd_devmap_init(void)
 	dasd_max_devindex = 0;
 	for (i = 0; i < 256; i++)
 		INIT_LIST_HEAD(&dasd_hashlists[i]);
-	return 0;
 
+	/* Initialize servermap structure. */
+	INIT_LIST_HEAD(&dasd_serverlist);
+	return 0;
 }
 
 void
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 3f9d704d265..4002f6c1c1b 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_diag.c
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
  * Based on.......: linux/drivers/s390/block/mdisk.c
@@ -336,7 +336,7 @@ dasd_diag_check_device(struct dasd_device *device)
 
 	private = (struct dasd_diag_private *) device->private;
 	if (private == NULL) {
-		private = kmalloc(sizeof(struct dasd_diag_private),GFP_KERNEL);
+		private = kzalloc(sizeof(struct dasd_diag_private),GFP_KERNEL);
 		if (private == NULL) {
 			DEV_MESSAGE(KERN_WARNING, device, "%s",
 				"memory allocation failed for private data");
@@ -527,7 +527,7 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
 				   datasize, device);
 	if (IS_ERR(cqr))
 		return cqr;
-	
+
 	dreq = (struct dasd_diag_req *) cqr->data;
 	dreq->block_count = count;
 	dbio = dreq->bio;
diff --git a/drivers/s390/block/dasd_diag.h b/drivers/s390/block/dasd_diag.h
index 38a4e55f895..b8c78267ff3 100644
--- a/drivers/s390/block/dasd_diag.h
+++ b/drivers/s390/block/dasd_diag.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_diag.h
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
  * Based on.......: linux/drivers/s390/block/mdisk.h
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 7d5a6cee4bd..0dfab30e808 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -1,7 +1,7 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_eckd.c
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- *		    Horst Hummel <Horst.Hummel@de.ibm.com> 
+ *		    Horst Hummel <Horst.Hummel@de.ibm.com>
  *		    Carsten Otte <Cotte@de.ibm.com>
  *		    Martin Schwidefsky <schwidefsky@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
@@ -24,6 +24,7 @@
 #include <asm/io.h>
 #include <asm/todclk.h>
 #include <asm/uaccess.h>
+#include <asm/cio.h>
 #include <asm/ccwdev.h>
 
 #include "dasd_int.h"
@@ -89,17 +90,22 @@ dasd_eckd_probe (struct ccw_device *cdev)
 {
 	int ret;
 
-	ret = dasd_generic_probe (cdev, &dasd_eckd_discipline);
-	if (ret)
+	/* set ECKD specific ccw-device options */
+	ret = ccw_device_set_options(cdev, CCWDEV_ALLOW_FORCE);
+	if (ret) {
+		printk(KERN_WARNING
+		       "dasd_eckd_probe: could not set ccw-device options "
+		       "for %s\n", cdev->dev.bus_id);
 		return ret;
-	ccw_device_set_options(cdev, CCWDEV_DO_PATHGROUP | CCWDEV_ALLOW_FORCE);
-	return 0;
+	}
+	ret = dasd_generic_probe(cdev, &dasd_eckd_discipline);
+	return ret;
 }
 
 static int
 dasd_eckd_set_online(struct ccw_device *cdev)
 {
-	return dasd_generic_set_online (cdev, &dasd_eckd_discipline);
+	return dasd_generic_set_online(cdev, &dasd_eckd_discipline);
 }
 
 static struct ccw_driver dasd_eckd_driver = {
@@ -210,14 +216,14 @@ check_XRC (struct ccw1         *de_ccw,
 
         /* switch on System Time Stamp - needed for XRC Support */
         if (private->rdc_data.facilities.XRC_supported) {
-                
+
                 data->ga_extended |= 0x08; /* switch on 'Time Stamp Valid'   */
                 data->ga_extended |= 0x02; /* switch on 'Extended Parameter' */
-                
+
                 data->ep_sys_time = get_clock ();
-                
+
                 de_ccw->count = sizeof (struct DE_eckd_data);
-                de_ccw->flags |= CCW_FLAG_SLI;  
+		de_ccw->flags |= CCW_FLAG_SLI;
         }
 
         return;
@@ -296,8 +302,8 @@ define_extent(struct ccw1 * ccw, struct DE_eckd_data * data, int trk,
 	/* check for sequential prestage - enhance cylinder range */
 	if (data->attributes.operation == DASD_SEQ_PRESTAGE ||
 	    data->attributes.operation == DASD_SEQ_ACCESS) {
-		
-		if (end.cyl + private->attrib.nr_cyl < geo.cyl) 
+
+		if (end.cyl + private->attrib.nr_cyl < geo.cyl)
 			end.cyl += private->attrib.nr_cyl;
 		else
 			end.cyl = (geo.cyl - 1);
@@ -317,7 +323,7 @@ locate_record(struct ccw1 *ccw, struct LO_eckd_data *data, int trk,
 	struct dasd_eckd_private *private;
 	int sector;
 	int dn, d;
-				
+
 	private = (struct dasd_eckd_private *) device->private;
 
 	DBF_DEV_EVENT(DBF_INFO, device,
@@ -541,6 +547,86 @@ dasd_eckd_read_conf(struct dasd_device *device)
 }
 
 /*
+ * Build CP for Perform Subsystem Function - SSC.
+ */
+struct dasd_ccw_req *
+dasd_eckd_build_psf_ssc(struct dasd_device *device)
+{
+       struct dasd_ccw_req *cqr;
+       struct dasd_psf_ssc_data *psf_ssc_data;
+       struct ccw1 *ccw;
+
+       cqr = dasd_smalloc_request("ECKD", 1 /* PSF */ ,
+				  sizeof(struct dasd_psf_ssc_data),
+				  device);
+
+       if (IS_ERR(cqr)) {
+	       DEV_MESSAGE(KERN_WARNING, device, "%s",
+			   "Could not allocate PSF-SSC request");
+	       return cqr;
+       }
+       psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data;
+       psf_ssc_data->order = PSF_ORDER_SSC;
+       psf_ssc_data->suborder = 0x08;
+
+       ccw = cqr->cpaddr;
+       ccw->cmd_code = DASD_ECKD_CCW_PSF;
+       ccw->cda = (__u32)(addr_t)psf_ssc_data;
+       ccw->count = 66;
+
+       cqr->device = device;
+       cqr->expires = 10*HZ;
+       cqr->buildclk = get_clock();
+       cqr->status = DASD_CQR_FILLED;
+       return cqr;
+}
+
+/*
+ * Perform Subsystem Function.
+ * It is necessary to trigger CIO for channel revalidation since this
+ * call might change behaviour of DASD devices.
+ */
+static int
+dasd_eckd_psf_ssc(struct dasd_device *device)
+{
+       struct dasd_ccw_req *cqr;
+       int rc;
+
+       cqr = dasd_eckd_build_psf_ssc(device);
+       if (IS_ERR(cqr))
+	       return PTR_ERR(cqr);
+
+       rc = dasd_sleep_on(cqr);
+       if (!rc)
+	       /* trigger CIO to reprobe devices */
+	       css_schedule_reprobe();
+       dasd_sfree_request(cqr, cqr->device);
+       return rc;
+}
+
+/*
+ * Valide storage server of current device.
+ */
+static int
+dasd_eckd_validate_server(struct dasd_device *device)
+{
+	int rc;
+
+	/* Currently PAV is the only reason to 'validate' server on LPAR */
+	if (dasd_nopav || MACHINE_IS_VM)
+		return 0;
+
+	rc = dasd_eckd_psf_ssc(device);
+	if (rc)
+		/* may be requested feature is not available on server,
+		 * therefore just report error and go ahead */
+		DEV_MESSAGE(KERN_INFO, device,
+			    "Perform Subsystem Function returned rc=%d", rc);
+	/* RE-Read Configuration Data */
+	return dasd_eckd_read_conf(device);
+}
+
+/*
  * Check device characteristics.
  * If the device is accessible using ECKD discipline, the device is enabled.
  */
@@ -554,7 +640,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
 
 	private = (struct dasd_eckd_private *) device->private;
 	if (private == NULL) {
-		private = kmalloc(sizeof(struct dasd_eckd_private),
+		private = kzalloc(sizeof(struct dasd_eckd_private),
 				  GFP_KERNEL | GFP_DMA);
 		if (private == NULL) {
 			DEV_MESSAGE(KERN_WARNING, device, "%s",
@@ -562,7 +648,6 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
 				    "data");
 			return -ENOMEM;
 		}
-		memset(private, 0, sizeof(struct dasd_eckd_private));
 		device->private = (void *) private;
 	}
 	/* Invalidate status of initial analysis. */
@@ -571,16 +656,29 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
 	private->attrib.operation = DASD_NORMAL_CACHE;
 	private->attrib.nr_cyl = 0;
 
+	/* Read Configuration Data */
+	rc = dasd_eckd_read_conf(device);
+	if (rc)
+		return rc;
+
+	/* Generate device unique id and register in devmap */
+	rc = dasd_eckd_generate_uid(device, &uid);
+	if (rc)
+		return rc;
+	rc = dasd_set_uid(device->cdev, &uid);
+	if (rc == 1)	/* new server found */
+		rc = dasd_eckd_validate_server(device);
+	if (rc)
+		return rc;
+
 	/* Read Device Characteristics */
 	rdc_data = (void *) &(private->rdc_data);
 	memset(rdc_data, 0, sizeof(rdc_data));
 	rc = read_dev_chars(device->cdev, &rdc_data, 64);
-	if (rc) {
+	if (rc)
 		DEV_MESSAGE(KERN_WARNING, device,
-			    "Read device characteristics returned error %d",
-			    rc);
-		return rc;
-	}
+			    "Read device characteristics returned "
+			    "rc=%d", rc);
 
 	DEV_MESSAGE(KERN_INFO, device,
 		    "%04X/%02X(CU:%04X/%02X) Cyl:%d Head:%d Sec:%d",
@@ -591,19 +689,6 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
 		    private->rdc_data.no_cyl,
 		    private->rdc_data.trk_per_cyl,
 		    private->rdc_data.sec_per_trk);
-
-	/* Read Configuration Data */
-	rc = dasd_eckd_read_conf (device);
-	if (rc)
-		return rc;
-
-	/* Generate device unique id and register in devmap */
-	rc = dasd_eckd_generate_uid(device, &uid);
-	if (rc)
-		return rc;
-
-	rc = dasd_set_uid(device->cdev, &uid);
-
 	return rc;
 }
 
@@ -773,7 +858,7 @@ dasd_eckd_end_analysis(struct dasd_device *device)
 		    ((private->rdc_data.no_cyl *
 		      private->rdc_data.trk_per_cyl *
 		      blk_per_trk * (device->bp_block >> 9)) >> 1),
-		    ((blk_per_trk * device->bp_block) >> 10), 
+		    ((blk_per_trk * device->bp_block) >> 10),
 		    private->uses_cdl ?
 		    "compatible disk layout" : "linux disk layout");
 
@@ -970,7 +1055,7 @@ dasd_eckd_format_device(struct dasd_device * device,
 				if (i < 3) {
 					ect->kl = 4;
 					ect->dl = sizes_trk0[i] - 4;
-				} 
+				}
 			}
 			if ((fdata->intensity & 0x08) &&
 			    fdata->start_unit == 1) {
@@ -1270,7 +1355,7 @@ dasd_eckd_fill_info(struct dasd_device * device,
 
 /*
  * Release device ioctl.
- * Buils a channel programm to releases a prior reserved 
+ * Buils a channel programm to releases a prior reserved
  * (see dasd_eckd_reserve) device.
  */
 static int
@@ -1310,8 +1395,8 @@ dasd_eckd_release(struct dasd_device *device)
 /*
  * Reserve device ioctl.
  * Options are set to 'synchronous wait for interrupt' and
- * 'timeout the request'. This leads to a terminate IO if 
- * the interrupt is outstanding for a certain time. 
+ * 'timeout the request'. This leads to a terminate IO if
+ * the interrupt is outstanding for a certain time.
  */
 static int
 dasd_eckd_reserve(struct dasd_device *device)
@@ -1349,7 +1434,7 @@ dasd_eckd_reserve(struct dasd_device *device)
 
 /*
  * Steal lock ioctl - unconditional reserve device.
- * Buils a channel programm to break a device's reservation. 
+ * Buils a channel programm to break a device's reservation.
  * (unconditional reserve)
  */
 static int
@@ -1522,6 +1607,40 @@ dasd_eckd_ioctl(struct dasd_device *device, unsigned int cmd, void __user *argp)
 }
 
 /*
+ * Dump the range of CCWs into 'page' buffer
+ * and return number of printed chars.
+ */
+static inline int
+dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page)
+{
+	int len, count;
+	char *datap;
+
+	len = 0;
+	while (from <= to) {
+		len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+			       " CCW %p: %08X %08X DAT:",
+			       from, ((int *) from)[0], ((int *) from)[1]);
+
+		/* get pointer to data (consider IDALs) */
+		if (from->flags & CCW_FLAG_IDA)
+			datap = (char *) *((addr_t *) (addr_t) from->cda);
+		else
+			datap = (char *) ((addr_t) from->cda);
+
+		/* dump data (max 32 bytes) */
+		for (count = 0; count < from->count && count < 32; count++) {
+			if (count % 8 == 0) len += sprintf(page + len, " ");
+			if (count % 4 == 0) len += sprintf(page + len, " ");
+			len += sprintf(page + len, "%02x", datap[count]);
+		}
+		len += sprintf(page + len, "\n");
+		from++;
+	}
+	return len;
+}
+
+/*
  * Print sense data and related channel program.
  * Parts are printed because printk buffer is only 1024 bytes.
  */
@@ -1530,8 +1649,8 @@ dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
 		     struct irb *irb)
 {
 	char *page;
-	struct ccw1 *act, *end, *last;
-	int len, sl, sct, count;
+	struct ccw1 *first, *last, *fail, *from, *to;
+	int len, sl, sct;
 
 	page = (char *) get_zeroed_page(GFP_ATOMIC);
 	if (page == NULL) {
@@ -1539,7 +1658,8 @@ dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
 			    "No memory to dump sense data");
 		return;
 	}
-	len = sprintf(page, KERN_ERR PRINTK_HEADER
+	/* dump the sense data */
+	len = sprintf(page,  KERN_ERR PRINTK_HEADER
 		      " I/O status report for device %s:\n",
 		      device->cdev->dev.bus_id);
 	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
@@ -1564,87 +1684,55 @@ dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
 
 		if (irb->ecw[27] & DASD_SENSE_BIT_0) {
 			/* 24 Byte Sense Data */
-			len += sprintf(page + len, KERN_ERR PRINTK_HEADER
-				       " 24 Byte: %x MSG %x, "
-				       "%s MSGb to SYSOP\n",
-				       irb->ecw[7] >> 4, irb->ecw[7] & 0x0f,
-				       irb->ecw[1] & 0x10 ? "" : "no");
+			sprintf(page + len, KERN_ERR PRINTK_HEADER
+				" 24 Byte: %x MSG %x, "
+				"%s MSGb to SYSOP\n",
+				irb->ecw[7] >> 4, irb->ecw[7] & 0x0f,
+				irb->ecw[1] & 0x10 ? "" : "no");
 		} else {
 			/* 32 Byte Sense Data */
-			len += sprintf(page + len, KERN_ERR PRINTK_HEADER
-				       " 32 Byte: Format: %x "
-				       "Exception class %x\n",
-				       irb->ecw[6] & 0x0f, irb->ecw[22] >> 4);
+			sprintf(page + len, KERN_ERR PRINTK_HEADER
+				" 32 Byte: Format: %x "
+				"Exception class %x\n",
+				irb->ecw[6] & 0x0f, irb->ecw[22] >> 4);
 		}
 	} else {
-	        len += sprintf(page + len, KERN_ERR PRINTK_HEADER
-			       " SORRY - NO VALID SENSE AVAILABLE\n");
+		sprintf(page + len, KERN_ERR PRINTK_HEADER
+			" SORRY - NO VALID SENSE AVAILABLE\n");
 	}
-	MESSAGE_LOG(KERN_ERR, "%s",
-		    page + sizeof(KERN_ERR PRINTK_HEADER));
-
-	/* dump the Channel Program */
-	/* print first CCWs (maximum 8) */
-	act = req->cpaddr;
-        for (last = act; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
-	end = min(act + 8, last);
-	len = sprintf(page, KERN_ERR PRINTK_HEADER
+	printk("%s", page);
+
+	/* dump the Channel Program (max 140 Bytes per line) */
+	/* Count CCW and print first CCWs (maximum 1024 % 140 = 7) */
+	first = req->cpaddr;
+	for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
+	to = min(first + 6, last);
+	len = sprintf(page,  KERN_ERR PRINTK_HEADER
 		      " Related CP in req: %p\n", req);
-	while (act <= end) {
-		len += sprintf(page + len, KERN_ERR PRINTK_HEADER
-			       " CCW %p: %08X %08X DAT:",
-			       act, ((int *) act)[0], ((int *) act)[1]);
-		for (count = 0; count < 32 && count < act->count;
-		     count += sizeof(int))
-			len += sprintf(page + len, " %08X",
-				       ((int *) (addr_t) act->cda)
-				       [(count>>2)]);
-		len += sprintf(page + len, "\n");
-		act++;
-	}
-	MESSAGE_LOG(KERN_ERR, "%s",
-		    page + sizeof(KERN_ERR PRINTK_HEADER));
+	dasd_eckd_dump_ccw_range(first, to, page + len);
+	printk("%s", page);
 
-	/* print failing CCW area */
+	/* print failing CCW area (maximum 4) */
+	/* scsw->cda is either valid or zero  */
 	len = 0;
-	if (act <  ((struct ccw1 *)(addr_t) irb->scsw.cpa) - 2) {
-		act = ((struct ccw1 *)(addr_t) irb->scsw.cpa) - 2;
-		len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
-	}
-	end = min((struct ccw1 *)(addr_t) irb->scsw.cpa + 2, last);
-	while (act <= end) {
-		len += sprintf(page + len, KERN_ERR PRINTK_HEADER
-			       " CCW %p: %08X %08X DAT:",
-			       act, ((int *) act)[0], ((int *) act)[1]);
-		for (count = 0; count < 32 && count < act->count;
-		     count += sizeof(int))
-			len += sprintf(page + len, " %08X",
-				       ((int *) (addr_t) act->cda)
-				       [(count>>2)]);
-		len += sprintf(page + len, "\n");
-		act++;
+	from = ++to;
+	fail = (struct ccw1 *)(addr_t) irb->scsw.cpa; /* failing CCW */
+	if (from <  fail - 2) {
+		from = fail - 2;     /* there is a gap - print header */
+		len += sprintf(page, KERN_ERR PRINTK_HEADER "......\n");
 	}
+	to = min(fail + 1, last);
+	len += dasd_eckd_dump_ccw_range(from, to, page + len);
 
-	/* print last CCWs */
-	if (act <  last - 2) {
-		act = last - 2;
+	/* print last CCWs (maximum 2) */
+	from = max(from, ++to);
+	if (from < last - 1) {
+		from = last - 1;     /* there is a gap - print header */
 		len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
 	}
-	while (act <= last) {
-		len += sprintf(page + len, KERN_ERR PRINTK_HEADER
-			       " CCW %p: %08X %08X DAT:",
-			       act, ((int *) act)[0], ((int *) act)[1]);
-		for (count = 0; count < 32 && count < act->count;
-		     count += sizeof(int))
-			len += sprintf(page + len, " %08X",
-				       ((int *) (addr_t) act->cda)
-				       [(count>>2)]);
-		len += sprintf(page + len, "\n");
-		act++;
-	}
+	len += dasd_eckd_dump_ccw_range(from, last, page + len);
 	if (len > 0)
-		MESSAGE_LOG(KERN_ERR, "%s",
-			    page + sizeof(KERN_ERR PRINTK_HEADER));
+		printk("%s", page);
 	free_page((unsigned long) page);
 }
 
@@ -1685,14 +1773,8 @@ static struct dasd_discipline dasd_eckd_discipline = {
 static int __init
 dasd_eckd_init(void)
 {
-	int ret;
-
 	ASCEBC(dasd_eckd_discipline.ebcname, 4);
-
-	ret = ccw_driver_register(&dasd_eckd_driver);
-	if (!ret)
-		dasd_generic_auto_online(&dasd_eckd_driver);
-	return ret;
+	return ccw_driver_register(&dasd_eckd_driver);
 }
 
 static void __exit
@@ -1703,22 +1785,3 @@ dasd_eckd_cleanup(void)
 
 module_init(dasd_eckd_init);
 module_exit(dasd_eckd_cleanup);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4 
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: 1
- * tab-width: 8
- * End:
- */
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index d5734e976e1..712ff165013 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -1,7 +1,7 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_eckd.h
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- *                  Horst Hummel <Horst.Hummel@de.ibm.com> 
+ *		    Horst Hummel <Horst.Hummel@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
  *
@@ -41,9 +41,10 @@
 #define DASD_ECKD_CCW_RESERVE		 0xB4
 
 /*
- *Perform Subsystem Function / Sub-Orders
+ * Perform Subsystem Function / Sub-Orders
  */
-#define PSF_ORDER_PRSSD			 0x18
+#define PSF_ORDER_PRSSD 0x18
+#define PSF_ORDER_SSC	0x1D
 
 /*****************************************************************************
  * SECTION: Type Definitions
@@ -155,7 +156,7 @@ struct dasd_eckd_characteristics {
 		unsigned char reserved2:4;
 		unsigned char reserved3:8;
 		unsigned char defect_wr:1;
-		unsigned char XRC_supported:1; 
+		unsigned char XRC_supported:1;
 		unsigned char reserved4:1;
 		unsigned char striping:1;
 		unsigned char reserved5:4;
@@ -343,7 +344,7 @@ struct dasd_eckd_path {
 };
 
 /*
- * Perform Subsystem Function - Prepare for Read Subsystem Data	 
+ * Perform Subsystem Function - Prepare for Read Subsystem Data
  */
 struct dasd_psf_prssd_data {
 	unsigned char order;
@@ -353,4 +354,15 @@ struct dasd_psf_prssd_data {
 	unsigned char varies[9];
 } __attribute__ ((packed));
 
+/*
+ * Perform Subsystem Function - Set Subsystem Characteristics
+ */
+struct dasd_psf_ssc_data {
+	unsigned char order;
+	unsigned char flags;
+	unsigned char cu_type[4];
+	unsigned char suborder;
+	unsigned char reserved[59];
+} __attribute__((packed));
+
 #endif				/* DASD_ECKD_H */
diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c
index 2d946b6ca07..da65f1b032f 100644
--- a/drivers/s390/block/dasd_eer.c
+++ b/drivers/s390/block/dasd_eer.c
@@ -89,7 +89,7 @@ struct eerbuffer {
 };
 
 static LIST_HEAD(bufferlist);
-static spinlock_t bufferlock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(bufferlock);
 static DECLARE_WAIT_QUEUE_HEAD(dasd_eer_read_wait_queue);
 
 /*
@@ -276,7 +276,7 @@ struct dasd_eer_header {
 	__u64 tv_sec;
 	__u64 tv_usec;
 	char busid[DASD_EER_BUSID_SIZE];
-};
+} __attribute__ ((packed));
 
 /*
  * The following function can be used for those triggers that have
@@ -521,6 +521,8 @@ static int dasd_eer_open(struct inode *inp, struct file *filp)
 	unsigned long flags;
 
 	eerb = kzalloc(sizeof(struct eerbuffer), GFP_KERNEL);
+	if (!eerb)
+		return -ENOMEM;
 	eerb->buffer_page_count = eer_pages;
 	if (eerb->buffer_page_count < 1 ||
 	    eerb->buffer_page_count > INT_MAX / PAGE_SIZE) {
diff --git a/drivers/s390/block/dasd_erp.c b/drivers/s390/block/dasd_erp.c
index b842377cb0c..4108d96f6a5 100644
--- a/drivers/s390/block/dasd_erp.c
+++ b/drivers/s390/block/dasd_erp.c
@@ -90,7 +90,7 @@ dasd_default_erp_action(struct dasd_ccw_req * cqr)
 
         /* just retry - there is nothing to save ... I got no sense data.... */
         if (cqr->retries > 0) {
-                DEV_MESSAGE (KERN_DEBUG, device, 
+		DEV_MESSAGE (KERN_DEBUG, device,
                              "default ERP called (%i retries left)",
                              cqr->retries);
 		cqr->lpm    = LPM_ANYPATH;
@@ -155,7 +155,7 @@ dasd_default_erp_postaction(struct dasd_ccw_req * cqr)
 
 /*
  * Print the hex dump of the memory used by a request. This includes
- * all error recovery ccws that have been chained in from of the 
+ * all error recovery ccws that have been chained in from of the
  * real request.
  */
 static inline void
@@ -227,12 +227,12 @@ dasd_log_ccw(struct dasd_ccw_req * cqr, int caller, __u32 cpa)
 		/*
 		 * Log bytes arround failed CCW but only if we did
 		 * not log the whole CP of the CCW is outside the
-		 * logged CP. 
+		 * logged CP.
 		 */
 		if (cplength > 40 ||
 		    ((addr_t) cpa < (addr_t) lcqr->cpaddr &&
 		     (addr_t) cpa > (addr_t) (lcqr->cpaddr + cplength + 4))) {
-			
+
 			DEV_MESSAGE(KERN_ERR, device,
 				    "Failed CCW (%p) (area):",
 				    (void *) (long) cpa);
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 91145698f8e..bb7755b9b19 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_fba.c
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
@@ -56,19 +56,13 @@ static struct ccw_driver dasd_fba_driver; /* see below */
 static int
 dasd_fba_probe(struct ccw_device *cdev)
 {
-	int ret;
-
-	ret = dasd_generic_probe (cdev, &dasd_fba_discipline);
-	if (ret)
-		return ret;
-	ccw_device_set_options(cdev, CCWDEV_DO_PATHGROUP);
-	return 0;
+	return dasd_generic_probe(cdev, &dasd_fba_discipline);
 }
 
 static int
 dasd_fba_set_online(struct ccw_device *cdev)
 {
-	return dasd_generic_set_online (cdev, &dasd_fba_discipline);
+	return dasd_generic_set_online(cdev, &dasd_fba_discipline);
 }
 
 static struct ccw_driver dasd_fba_driver = {
@@ -125,13 +119,13 @@ static int
 dasd_fba_check_characteristics(struct dasd_device *device)
 {
 	struct dasd_fba_private *private;
-	struct ccw_device *cdev = device->cdev;	
+	struct ccw_device *cdev = device->cdev;
 	void *rdc_data;
 	int rc;
 
 	private = (struct dasd_fba_private *) device->private;
 	if (private == NULL) {
-		private = kmalloc(sizeof(struct dasd_fba_private), GFP_KERNEL);
+		private = kzalloc(sizeof(struct dasd_fba_private), GFP_KERNEL);
 		if (private == NULL) {
 			DEV_MESSAGE(KERN_WARNING, device, "%s",
 				    "memory allocation failed for private "
@@ -204,7 +198,7 @@ dasd_fba_examine_error(struct dasd_ccw_req * cqr, struct irb * irb)
 	if (irb->scsw.cstat == 0x00 &&
 	    irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
 		return dasd_era_none;
-	
+
 	cdev = device->cdev;
 	switch (cdev->id.dev_type) {
 	case 0x3370:
@@ -539,7 +533,7 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
  * 8192 bytes (=2 pages). For 64 bit one dasd_mchunkt_t structure has
  * 24 bytes, the struct dasd_ccw_req has 136 bytes and each block can use
  * up to 16 bytes (8 for the ccw and 8 for the idal pointer). In
- * addition we have one define extent ccw + 16 bytes of data and a 
+ * addition we have one define extent ccw + 16 bytes of data and a
  * locate record ccw for each block (stupid devices!) + 16 bytes of data.
  * That makes:
  * (8192 - 24 - 136 - 8 - 16) / 40 = 200.2 blocks at maximum.
@@ -569,16 +563,8 @@ static struct dasd_discipline dasd_fba_discipline = {
 static int __init
 dasd_fba_init(void)
 {
-	int ret;
-
 	ASCEBC(dasd_fba_discipline.ebcname, 4);
-
-	ret = ccw_driver_register(&dasd_fba_driver);
-	if (ret)
-		return ret;
-
-	dasd_generic_auto_online(&dasd_fba_driver);
-	return 0;
+	return ccw_driver_register(&dasd_fba_driver);
 }
 
 static void __exit
@@ -589,22 +575,3 @@ dasd_fba_cleanup(void)
 
 module_init(dasd_fba_init);
 module_exit(dasd_fba_cleanup);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4 
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: 1
- * tab-width: 8
- * End:
- */
diff --git a/drivers/s390/block/dasd_fba.h b/drivers/s390/block/dasd_fba.h
index da1fa91fc01..14c910baa5f 100644
--- a/drivers/s390/block/dasd_fba.h
+++ b/drivers/s390/block/dasd_fba.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_fba.h
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
  * Bugreports.to..: <Linux390@de.ibm.com>
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index fce2835e7d1..61ffde718a7 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -68,8 +68,6 @@ dasd_gendisk_alloc(struct dasd_device *device)
 	}
 	len += sprintf(gdp->disk_name + len, "%c", 'a'+(device->devindex%26));
 
- 	sprintf(gdp->devfs_name, "dasd/%s", device->cdev->dev.bus_id);
-
 	if (device->features & DASD_FEATURE_READONLY)
 		set_disk_ro(gdp, 1);
 	gdp->private_data = device;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index d4b13e300a7..3ccf06d28ba 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -1,7 +1,7 @@
-/* 
+/*
  * File...........: linux/drivers/s390/block/dasd_int.h
  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- *                  Horst Hummel <Horst.Hummel@de.ibm.com> 
+ *		    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
@@ -54,7 +54,6 @@
 #include <linux/module.h>
 #include <linux/wait.h>
 #include <linux/blkdev.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/genhd.h>
 #include <linux/hdreg.h>
 #include <linux/interrupt.h>
@@ -186,7 +185,7 @@ struct dasd_ccw_req {
         void *callback_data;
 };
 
-/* 
+/*
  * dasd_ccw_req -> status can be:
  */
 #define DASD_CQR_FILLED   0x00	/* request is ready to be processed */
@@ -248,7 +247,7 @@ struct dasd_discipline {
         /*
          * Error recovery functions. examine_error() returns a value that
          * indicates what to do for an error condition. If examine_error()
-         * returns 'dasd_era_recover' erp_action() is called to create a 
+	 * returns 'dasd_era_recover' erp_action() is called to create a
          * special error recovery ccw. erp_postaction() is called after
          * an error recovery ccw has finished its execution. dump_sense
          * is called for every error condition to print the sense data
@@ -302,11 +301,11 @@ struct dasd_device {
 	spinlock_t request_queue_lock;
 	struct block_device *bdev;
         unsigned int devindex;
-	unsigned long blocks;		/* size of volume in blocks */
-	unsigned int bp_block;		/* bytes per block */
-	unsigned int s2b_shift;		/* log2 (bp_block/512) */
-	unsigned long flags;		/* per device flags */
-	unsigned short features;        /* copy of devmap-features (read-only!) */
+	unsigned long blocks;	   /* size of volume in blocks */
+	unsigned int bp_block;	   /* bytes per block */
+	unsigned int s2b_shift;	   /* log2 (bp_block/512) */
+	unsigned long flags;	   /* per device flags */
+	unsigned short features;   /* copy of devmap-features (read-only!) */
 
 	/* extended error reporting stuff (eer) */
 	struct dasd_ccw_req *eer_cqr;
@@ -513,12 +512,12 @@ void dasd_generic_remove (struct ccw_device *cdev);
 int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *);
 int dasd_generic_set_offline (struct ccw_device *cdev);
 int dasd_generic_notify(struct ccw_device *, int);
-void dasd_generic_auto_online (struct ccw_driver *);
 
 /* externals in dasd_devmap.c */
 extern int dasd_max_devindex;
 extern int dasd_probeonly;
 extern int dasd_autodetect;
+extern int dasd_nopav;
 
 int dasd_devmap_init(void);
 void dasd_devmap_exit(void);
@@ -606,22 +605,3 @@ static inline int dasd_eer_enabled(struct dasd_device *device)
 #endif				/* __KERNEL__ */
 
 #endif				/* DASD_H */
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4 
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: 1
- * tab-width: 8
- * End:
- */
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index b8c80d28df4..302bcd0f28b 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -90,10 +90,10 @@ static int
 dasd_ioctl_quiesce(struct dasd_device *device)
 {
 	unsigned long flags;
-	
+
 	if (!capable (CAP_SYS_ADMIN))
 		return -EACCES;
-	
+
 	DEV_MESSAGE (KERN_DEBUG, device, "%s",
 		     "Quiesce IO on device");
 	spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
@@ -110,13 +110,13 @@ static int
 dasd_ioctl_resume(struct dasd_device *device)
 {
 	unsigned long flags;
-	
-	if (!capable (CAP_SYS_ADMIN)) 
+
+	if (!capable (CAP_SYS_ADMIN))
 		return -EACCES;
 
 	DEV_MESSAGE (KERN_DEBUG, device, "%s",
 		     "resume IO on device");
-	
+
 	spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
 	device->stopped &= ~DASD_STOPPED_QUIESCE;
 	spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
@@ -287,7 +287,7 @@ dasd_ioctl_information(struct dasd_device *device,
 	dasd_info->open_count = atomic_read(&device->open_count);
 	if (!device->bdev)
 		dasd_info->open_count++;
-	
+
 	/*
 	 * check if device is really formatted
 	 * LDL / CDL was returned by 'fill_info'
diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c
index 54ecd548c31..4c1e56b9b98 100644
--- a/drivers/s390/block/xpram.c
+++ b/drivers/s390/block/xpram.c
@@ -36,7 +36,6 @@
 #include <linux/hdreg.h>  /* HDIO_GETGEO */
 #include <linux/sysdev.h>
 #include <linux/bio.h>
-#include <linux/devfs_fs_kernel.h>
 #include <asm/uaccess.h>
 
 #define XPRAM_NAME	"xpram"
@@ -439,8 +438,6 @@ static int __init xpram_setup_blkdev(void)
 	if (rc < 0)
 		goto out;
 
-	devfs_mk_dir("slram");
-
 	/*
 	 * Assign the other needed values: make request function, sizes and
 	 * hardsect size. All the minor devices feature the same value.
@@ -469,14 +466,12 @@ static int __init xpram_setup_blkdev(void)
 		disk->private_data = &xpram_devices[i];
 		disk->queue = xpram_queue;
 		sprintf(disk->disk_name, "slram%d", i);
-		sprintf(disk->devfs_name, "slram/%d", i);
 		set_capacity(disk, xpram_sizes[i] << 1);
 		add_disk(disk);
 	}
 
 	return 0;
 out_unreg:
-	devfs_remove("slram");
 	unregister_blkdev(XPRAM_MAJOR, XPRAM_NAME);
 out:
 	while (i--)
@@ -495,7 +490,6 @@ static void __exit xpram_exit(void)
 		put_disk(xpram_disks[i]);
 	}
 	unregister_blkdev(XPRAM_MAJOR, XPRAM_NAME);
-	devfs_remove("slram");
 	blk_cleanup_queue(xpram_queue);
 	sysdev_unregister(&xpram_sys_device);
 	sysdev_class_unregister(&xpram_sysclass);
diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c
index fb7bc9e5eeb..a138b151009 100644
--- a/drivers/s390/char/monreader.c
+++ b/drivers/s390/char/monreader.c
@@ -586,7 +586,6 @@ static struct file_operations mon_fops = {
 
 static struct miscdevice mon_dev = {
 	.name       = "monreader",
-	.devfs_name = "monreader",
 	.fops       = &mon_fops,
 	.minor      = MISC_DYNAMIC_MINOR,
 };
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index eecb2afad5c..3c1314b7391 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -50,6 +50,9 @@ struct raw3270 {
 	unsigned char *ascebc;		/* ascii -> ebcdic table */
 	struct class_device *clttydev;	/* 3270-class tty device ptr */
 	struct class_device *cltubdev;	/* 3270-class tub device ptr */
+
+	struct raw3270_request init_request;
+	unsigned char init_data[256];
 };
 
 /* raw3270->flags */
@@ -484,8 +487,6 @@ struct raw3270_ua {	/* Query Reply structure for Usable Area */
 	} __attribute__ ((packed)) aua;
 } __attribute__ ((packed));
 
-static unsigned char raw3270_init_data[256];
-static struct raw3270_request raw3270_init_request;
 static struct diag210 raw3270_init_diag210;
 static DECLARE_MUTEX(raw3270_init_sem);
 
@@ -644,17 +645,17 @@ __raw3270_size_device(struct raw3270 *rp)
 	 * required (3270 device switched to 'stand-by') and command
 	 * rejects (old devices that can't do 'read partition').
 	 */
-	memset(&raw3270_init_request, 0, sizeof(raw3270_init_request));
-	memset(raw3270_init_data, 0, sizeof(raw3270_init_data));
-	/* Store 'read partition' data stream to raw3270_init_data */
-	memcpy(raw3270_init_data, wbuf, sizeof(wbuf));
-	INIT_LIST_HEAD(&raw3270_init_request.list);
-	raw3270_init_request.ccw.cmd_code = TC_WRITESF;
-	raw3270_init_request.ccw.flags = CCW_FLAG_SLI;
-	raw3270_init_request.ccw.count = sizeof(wbuf);
-	raw3270_init_request.ccw.cda = (__u32) __pa(raw3270_init_data);
-
-	rc = raw3270_start_init(rp, &raw3270_init_view, &raw3270_init_request);
+	memset(&rp->init_request, 0, sizeof(rp->init_request));
+	memset(&rp->init_data, 0, 256);
+	/* Store 'read partition' data stream to init_data */
+	memcpy(&rp->init_data, wbuf, sizeof(wbuf));
+	INIT_LIST_HEAD(&rp->init_request.list);
+	rp->init_request.ccw.cmd_code = TC_WRITESF;
+	rp->init_request.ccw.flags = CCW_FLAG_SLI;
+	rp->init_request.ccw.count = sizeof(wbuf);
+	rp->init_request.ccw.cda = (__u32) __pa(&rp->init_data);
+
+	rc = raw3270_start_init(rp, &raw3270_init_view, &rp->init_request);
 	if (rc)
 		/* Check error cases: -ERESTARTSYS, -EIO and -EOPNOTSUPP */
 		return rc;
@@ -679,18 +680,18 @@ __raw3270_size_device(struct raw3270 *rp)
 	 * The device accepted the 'read partition' command. Now
 	 * set up a read ccw and issue it.
 	 */
-	raw3270_init_request.ccw.cmd_code = TC_READMOD;
-	raw3270_init_request.ccw.flags = CCW_FLAG_SLI;
-	raw3270_init_request.ccw.count = sizeof(raw3270_init_data);
-	raw3270_init_request.ccw.cda = (__u32) __pa(raw3270_init_data);
-	rc = raw3270_start_init(rp, &raw3270_init_view, &raw3270_init_request);
+	rp->init_request.ccw.cmd_code = TC_READMOD;
+	rp->init_request.ccw.flags = CCW_FLAG_SLI;
+	rp->init_request.ccw.count = sizeof(rp->init_data);
+	rp->init_request.ccw.cda = (__u32) __pa(rp->init_data);
+	rc = raw3270_start_init(rp, &raw3270_init_view, &rp->init_request);
 	if (rc)
 		return rc;
 	/* Got a Query Reply */
-	count = sizeof(raw3270_init_data) - raw3270_init_request.rescnt;
-	uap = (struct raw3270_ua *) (raw3270_init_data + 1);
+	count = sizeof(rp->init_data) - rp->init_request.rescnt;
+	uap = (struct raw3270_ua *) (rp->init_data + 1);
 	/* Paranoia check. */
-	if (raw3270_init_data[0] != 0x88 || uap->uab.qcode != 0x81)
+	if (rp->init_data[0] != 0x88 || uap->uab.qcode != 0x81)
 		return -EOPNOTSUPP;
 	/* Copy rows/columns of default Usable Area */
 	rp->rows = uap->uab.h;
@@ -749,18 +750,18 @@ raw3270_reset_device(struct raw3270 *rp)
 	int rc;
 
 	down(&raw3270_init_sem);
-	memset(&raw3270_init_request, 0, sizeof(raw3270_init_request));
-	memset(raw3270_init_data, 0, sizeof(raw3270_init_data));
-	/* Store reset data stream to raw3270_init_data/raw3270_init_request */
-	raw3270_init_data[0] = TW_KR;
-	INIT_LIST_HEAD(&raw3270_init_request.list);
-	raw3270_init_request.ccw.cmd_code = TC_EWRITEA;
-	raw3270_init_request.ccw.flags = CCW_FLAG_SLI;
-	raw3270_init_request.ccw.count = 1;
-	raw3270_init_request.ccw.cda = (__u32) __pa(raw3270_init_data);
+	memset(&rp->init_request, 0, sizeof(rp->init_request));
+	memset(&rp->init_data, 0, sizeof(rp->init_data));
+	/* Store reset data stream to init_data/init_request */
+	rp->init_data[0] = TW_KR;
+	INIT_LIST_HEAD(&rp->init_request.list);
+	rp->init_request.ccw.cmd_code = TC_EWRITEA;
+	rp->init_request.ccw.flags = CCW_FLAG_SLI;
+	rp->init_request.ccw.count = 1;
+	rp->init_request.ccw.cda = (__u32) __pa(rp->init_data);
 	rp->view = &raw3270_init_view;
 	raw3270_init_view.dev = rp;
-	rc = raw3270_start_init(rp, &raw3270_init_view, &raw3270_init_request);
+	rc = raw3270_start_init(rp, &raw3270_init_view, &rp->init_request);
 	raw3270_init_view.dev = 0;
 	rp->view = 0;
 	up(&raw3270_init_sem);
@@ -854,7 +855,7 @@ raw3270_setup_console(struct ccw_device *cdev)
 	char *ascebc;
 	int rc;
 
-	rp = (struct raw3270 *) alloc_bootmem(sizeof(struct raw3270));
+	rp = (struct raw3270 *) alloc_bootmem_low(sizeof(struct raw3270));
 	ascebc = (char *) alloc_bootmem(256);
 	rc = raw3270_setup_device(cdev, rp, ascebc);
 	if (rc)
@@ -895,7 +896,7 @@ raw3270_create_device(struct ccw_device *cdev)
 	char *ascebc;
 	int rc;
 
-	rp = kmalloc(sizeof(struct raw3270), GFP_KERNEL);
+	rp = kmalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA);
 	if (!rp)
 		return ERR_PTR(-ENOMEM);
 	ascebc = kmalloc(256, GFP_KERNEL);
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index 9a141776873..7d26a3e4cb8 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -1785,7 +1785,6 @@ tty3270_init(void)
 	 * proc_entry, set_termios, flush_buffer, set_ldisc, write_proc
 	 */
 	driver->owner = THIS_MODULE;
-	driver->devfs_name = "ttyTUB/";
 	driver->driver_name = "ttyTUB";
 	driver->name = "ttyTUB";
 	driver->major = IBM_TTY3270_MAJOR;
@@ -1793,7 +1792,7 @@ tty3270_init(void)
 	driver->type = TTY_DRIVER_TYPE_SYSTEM;
 	driver->subtype = SYSTEM_TYPE_TTY;
 	driver->init_termios = tty_std_termios;
-	driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_NO_DEVFS;
+	driver->flags = TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_DYNAMIC_DEV;
 	tty_set_operations(driver, &tty3270_ops);
 	ret = tty_register_driver(driver);
 	if (ret) {
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index 0960bef7b19..15b895496a4 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -224,39 +224,6 @@ is_blacklisted (int ssid, int devno)
 }
 
 #ifdef CONFIG_PROC_FS
-static int
-__s390_redo_validation(struct subchannel_id schid, void *data)
-{
-	int ret;
-	struct subchannel *sch;
-
-	sch = get_subchannel_by_schid(schid);
-	if (sch) {
-		/* Already known. */
-		put_device(&sch->dev);
-		return 0;
-	}
-	ret = css_probe_device(schid);
-	if (ret == -ENXIO)
-		return ret; /* We're through. */
-	if (ret == -ENOMEM)
-		/* Stop validation for now. Bad, but no need for a panic. */
-		return ret;
-	return 0;
-}
-
-/*
- * Function: s390_redo_validation
- * Look for no longer blacklisted devices
- * FIXME: there must be a better way to do this */
-static inline void
-s390_redo_validation (void)
-{
-	CIO_TRACE_EVENT (0, "redoval");
-
-	for_each_subchannel(__s390_redo_validation, NULL);
-}
-
 /*
  * Function: blacklist_parse_proc_parameters
  * parse the stuff which is piped to /proc/cio_ignore
@@ -281,7 +248,7 @@ blacklist_parse_proc_parameters (char *buf)
 		return;
 	}
 
-	s390_redo_validation ();
+	css_schedule_reprobe();
 }
 
 /* Iterator struct for all devices. */
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index bdfee7fbaa2..c7319a07ba3 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -404,21 +404,24 @@ ccwgroup_driver_register (struct ccwgroup_driver *cdriver)
 }
 
 static int
-__ccwgroup_driver_unregister_device(struct device *dev, void *data)
+__ccwgroup_match_all(struct device *dev, void *data)
 {
-	__ccwgroup_remove_symlinks(to_ccwgroupdev(dev));
-	device_unregister(dev);
-	put_device(dev);
-	return 0;
+	return 1;
 }
 
 void
 ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver)
 {
+	struct device *dev;
+
 	/* We don't want ccwgroup devices to live longer than their driver. */
 	get_driver(&cdriver->driver);
-	driver_for_each_device(&cdriver->driver, NULL, NULL,
-			       __ccwgroup_driver_unregister_device);
+	while ((dev = driver_find_device(&cdriver->driver, NULL, NULL,
+					 __ccwgroup_match_all))) {
+		__ccwgroup_remove_symlinks(to_ccwgroupdev(dev));
+		device_unregister(dev);
+		put_device(dev);
+	}
 	put_driver(&cdriver->driver);
 	driver_unregister(&cdriver->driver);
 }
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 72187e54dca..b00f3ed051a 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -244,8 +244,7 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
 
 	if ((sch->schib.scsw.actl & SCSW_ACTL_DEVACT) &&
 	    (sch->schib.scsw.actl & SCSW_ACTL_SCHACT) &&
-	    (sch->schib.pmcw.lpum == mask) &&
-	    (sch->vpm == 0)) {
+	    (sch->schib.pmcw.lpum == mask)) {
 		int cc;
 
 		cc = cio_clear(sch);
@@ -918,12 +917,13 @@ chp_measurement_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
 	chp = to_channelpath(container_of(kobj, struct device, kobj));
 	css = to_css(chp->dev.parent);
 
-	size = sizeof(struct cmg_chars);
+	size = sizeof(struct cmg_entry);
 
 	/* Only allow single reads. */
 	if (off || count < size)
 		return 0;
 	chp_measurement_copy_block((struct cmg_entry *)buf, css, chp->id);
+	count = size;
 	return count;
 }
 
diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c
index 07ef3f640f4..1c3e8e9012b 100644
--- a/drivers/s390/cio/cmf.c
+++ b/drivers/s390/cio/cmf.c
@@ -3,9 +3,10 @@
  *
  * Linux on zSeries Channel Measurement Facility support
  *
- * Copyright 2000,2003 IBM Corporation
+ * Copyright 2000,2006 IBM Corporation
  *
- * Author: Arnd Bergmann <arndb@de.ibm.com>
+ * Authors: Arnd Bergmann <arndb@de.ibm.com>
+ *	    Cornelia Huck <cornelia.huck@de.ibm.com>
  *
  * original idea from Natarajan Krishnaswami <nkrishna@us.ibm.com>
  *
@@ -96,9 +97,9 @@ module_param(format, bool, 0444);
 /**
  * struct cmb_operations - functions to use depending on cmb_format
  *
- * all these functions operate on a struct cmf_device. There is only
- * one instance of struct cmb_operations because all cmf_device
- * objects are guaranteed to be of the same type.
+ * Most of these functions operate on a struct ccw_device. There is only
+ * one instance of struct cmb_operations because the format of the measurement
+ * data is guaranteed to be the same for every ccw_device.
  *
  * @alloc:	allocate memory for a channel measurement block,
  *		either with the help of a special pool or with kmalloc
@@ -107,6 +108,7 @@ module_param(format, bool, 0444);
  * @readall:	read a measurement block in a common format
  * @reset:	clear the data in the associated measurement block and
  *		reset its time stamp
+ * @align:	align an allocated block so that the hardware can use it
  */
 struct cmb_operations {
 	int (*alloc)  (struct ccw_device*);
@@ -115,11 +117,19 @@ struct cmb_operations {
 	u64 (*read)   (struct ccw_device*, int);
 	int (*readall)(struct ccw_device*, struct cmbdata *);
 	void (*reset) (struct ccw_device*);
+	void * (*align) (void *);
 
 	struct attribute_group *attr_group;
 };
 static struct cmb_operations *cmbops;
 
+struct cmb_data {
+	void *hw_block;   /* Pointer to block updated by hardware */
+	void *last_block; /* Last changed block copied from hardware block */
+	int size;	  /* Size of hw_block and last_block */
+	unsigned long long last_update;  /* when last_block was updated */
+};
+
 /* our user interface is designed in terms of nanoseconds,
  * while the hardware measures total times in its own
  * unit.*/
@@ -226,63 +236,229 @@ struct set_schib_struct {
 	unsigned long address;
 	wait_queue_head_t wait;
 	int ret;
+	struct kref kref;
 };
 
+static void cmf_set_schib_release(struct kref *kref)
+{
+	struct set_schib_struct *set_data;
+
+	set_data = container_of(kref, struct set_schib_struct, kref);
+	kfree(set_data);
+}
+
+#define CMF_PENDING 1
+
 static int set_schib_wait(struct ccw_device *cdev, u32 mme,
 				int mbfc, unsigned long address)
 {
-	struct set_schib_struct s = {
-		.mme = mme,
-		.mbfc = mbfc,
-		.address = address,
-		.wait = __WAIT_QUEUE_HEAD_INITIALIZER(s.wait),
-	};
+	struct set_schib_struct *set_data;
+	int ret;
 
 	spin_lock_irq(cdev->ccwlock);
-	s.ret = set_schib(cdev, mme, mbfc, address);
-	if (s.ret != -EBUSY) {
-		goto out_nowait;
+	if (!cdev->private->cmb) {
+		ret = -ENODEV;
+		goto out;
 	}
+	set_data = kzalloc(sizeof(struct set_schib_struct), GFP_ATOMIC);
+	if (!set_data) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	init_waitqueue_head(&set_data->wait);
+	kref_init(&set_data->kref);
+	set_data->mme = mme;
+	set_data->mbfc = mbfc;
+	set_data->address = address;
+
+	ret = set_schib(cdev, mme, mbfc, address);
+	if (ret != -EBUSY)
+		goto out_put;
 
 	if (cdev->private->state != DEV_STATE_ONLINE) {
-		s.ret = -EBUSY;
 		/* if the device is not online, don't even try again */
-		goto out_nowait;
+		ret = -EBUSY;
+		goto out_put;
 	}
+
 	cdev->private->state = DEV_STATE_CMFCHANGE;
-	cdev->private->cmb_wait = &s;
-	s.ret = 1;
+	set_data->ret = CMF_PENDING;
+	cdev->private->cmb_wait = set_data;
 
 	spin_unlock_irq(cdev->ccwlock);
-	if (wait_event_interruptible(s.wait, s.ret != 1)) {
+	if (wait_event_interruptible(set_data->wait,
+				     set_data->ret != CMF_PENDING)) {
 		spin_lock_irq(cdev->ccwlock);
-		if (s.ret == 1) {
-			s.ret = -ERESTARTSYS;
-			cdev->private->cmb_wait = 0;
+		if (set_data->ret == CMF_PENDING) {
+			set_data->ret = -ERESTARTSYS;
 			if (cdev->private->state == DEV_STATE_CMFCHANGE)
 				cdev->private->state = DEV_STATE_ONLINE;
 		}
 		spin_unlock_irq(cdev->ccwlock);
 	}
-	return s.ret;
-
-out_nowait:
+	spin_lock_irq(cdev->ccwlock);
+	cdev->private->cmb_wait = NULL;
+	ret = set_data->ret;
+out_put:
+	kref_put(&set_data->kref, cmf_set_schib_release);
+out:
 	spin_unlock_irq(cdev->ccwlock);
-	return s.ret;
+	return ret;
 }
 
 void retry_set_schib(struct ccw_device *cdev)
 {
-	struct set_schib_struct *s;
+	struct set_schib_struct *set_data;
+
+	set_data = cdev->private->cmb_wait;
+	if (!set_data) {
+		WARN_ON(1);
+		return;
+	}
+	kref_get(&set_data->kref);
+	set_data->ret = set_schib(cdev, set_data->mme, set_data->mbfc,
+				  set_data->address);
+	wake_up(&set_data->wait);
+	kref_put(&set_data->kref, cmf_set_schib_release);
+}
+
+static int cmf_copy_block(struct ccw_device *cdev)
+{
+	struct subchannel *sch;
+	void *reference_buf;
+	void *hw_block;
+	struct cmb_data *cmb_data;
+
+	sch = to_subchannel(cdev->dev.parent);
+
+	if (stsch(sch->schid, &sch->schib))
+		return -ENODEV;
+
+	if (sch->schib.scsw.fctl & SCSW_FCTL_START_FUNC) {
+		/* Don't copy if a start function is in progress. */
+		if ((!sch->schib.scsw.actl & SCSW_ACTL_SUSPENDED) &&
+		    (sch->schib.scsw.actl &
+		     (SCSW_ACTL_DEVACT | SCSW_ACTL_SCHACT)) &&
+		    (!sch->schib.scsw.stctl & SCSW_STCTL_SEC_STATUS))
+			return -EBUSY;
+	}
+	cmb_data = cdev->private->cmb;
+	hw_block = cmbops->align(cmb_data->hw_block);
+	if (!memcmp(cmb_data->last_block, hw_block, cmb_data->size))
+		/* No need to copy. */
+		return 0;
+	reference_buf = kzalloc(cmb_data->size, GFP_ATOMIC);
+	if (!reference_buf)
+		return -ENOMEM;
+	/* Ensure consistency of block copied from hardware. */
+	do {
+		memcpy(cmb_data->last_block, hw_block, cmb_data->size);
+		memcpy(reference_buf, hw_block, cmb_data->size);
+	} while (memcmp(cmb_data->last_block, reference_buf, cmb_data->size));
+	cmb_data->last_update = get_clock();
+	kfree(reference_buf);
+	return 0;
+}
+
+struct copy_block_struct {
+	wait_queue_head_t wait;
+	int ret;
+	struct kref kref;
+};
+
+static void cmf_copy_block_release(struct kref *kref)
+{
+	struct copy_block_struct *copy_block;
+
+	copy_block = container_of(kref, struct copy_block_struct, kref);
+	kfree(copy_block);
+}
+
+static int cmf_cmb_copy_wait(struct ccw_device *cdev)
+{
+	struct copy_block_struct *copy_block;
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(cdev->ccwlock, flags);
+	if (!cdev->private->cmb) {
+		ret = -ENODEV;
+		goto out;
+	}
+	copy_block = kzalloc(sizeof(struct copy_block_struct), GFP_ATOMIC);
+	if (!copy_block) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	init_waitqueue_head(&copy_block->wait);
+	kref_init(&copy_block->kref);
+
+	ret = cmf_copy_block(cdev);
+	if (ret != -EBUSY)
+		goto out_put;
+
+	if (cdev->private->state != DEV_STATE_ONLINE) {
+		ret = -EBUSY;
+		goto out_put;
+	}
+
+	cdev->private->state = DEV_STATE_CMFUPDATE;
+	copy_block->ret = CMF_PENDING;
+	cdev->private->cmb_wait = copy_block;
+
+	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	if (wait_event_interruptible(copy_block->wait,
+				     copy_block->ret != CMF_PENDING)) {
+		spin_lock_irqsave(cdev->ccwlock, flags);
+		if (copy_block->ret == CMF_PENDING) {
+			copy_block->ret = -ERESTARTSYS;
+			if (cdev->private->state == DEV_STATE_CMFUPDATE)
+				cdev->private->state = DEV_STATE_ONLINE;
+		}
+		spin_unlock_irqrestore(cdev->ccwlock, flags);
+	}
+	spin_lock_irqsave(cdev->ccwlock, flags);
+	cdev->private->cmb_wait = NULL;
+	ret = copy_block->ret;
+out_put:
+	kref_put(&copy_block->kref, cmf_copy_block_release);
+out:
+	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	return ret;
+}
+
+void cmf_retry_copy_block(struct ccw_device *cdev)
+{
+	struct copy_block_struct *copy_block;
 
-	s = cdev->private->cmb_wait;
-	cdev->private->cmb_wait = 0;
-	if (!s) {
+	copy_block = cdev->private->cmb_wait;
+	if (!copy_block) {
 		WARN_ON(1);
 		return;
 	}
-	s->ret = set_schib(cdev, s->mme, s->mbfc, s->address);
-	wake_up(&s->wait);
+	kref_get(&copy_block->kref);
+	copy_block->ret = cmf_copy_block(cdev);
+	wake_up(&copy_block->wait);
+	kref_put(&copy_block->kref, cmf_copy_block_release);
+}
+
+static void cmf_generic_reset(struct ccw_device *cdev)
+{
+	struct cmb_data *cmb_data;
+
+	spin_lock_irq(cdev->ccwlock);
+	cmb_data = cdev->private->cmb;
+	if (cmb_data) {
+		memset(cmb_data->last_block, 0, cmb_data->size);
+		/*
+		 * Need to reset hw block as well to make the hardware start
+		 * from 0 again.
+		 */
+		memset(cmbops->align(cmb_data->hw_block), 0, cmb_data->size);
+		cmb_data->last_update = 0;
+	}
+	cdev->private->cmb_start_time = get_clock();
+	spin_unlock_irq(cdev->ccwlock);
 }
 
 /**
@@ -343,8 +519,8 @@ struct cmb {
 /* insert a single device into the cmb_area list
  * called with cmb_area.lock held from alloc_cmb
  */
-static inline int
-alloc_cmb_single (struct ccw_device *cdev)
+static inline int alloc_cmb_single (struct ccw_device *cdev,
+				    struct cmb_data *cmb_data)
 {
 	struct cmb *cmb;
 	struct ccw_device_private *node;
@@ -358,10 +534,12 @@ alloc_cmb_single (struct ccw_device *cdev)
 
 	/* find first unused cmb in cmb_area.mem.
 	 * this is a little tricky: cmb_area.list
-	 * remains sorted by ->cmb pointers */
+	 * remains sorted by ->cmb->hw_data pointers */
 	cmb = cmb_area.mem;
 	list_for_each_entry(node, &cmb_area.list, cmb_list) {
-		if ((struct cmb*)node->cmb > cmb)
+		struct cmb_data *data;
+		data = node->cmb;
+		if ((struct cmb*)data->hw_block > cmb)
 			break;
 		cmb++;
 	}
@@ -372,7 +550,8 @@ alloc_cmb_single (struct ccw_device *cdev)
 
 	/* insert new cmb */
 	list_add_tail(&cdev->private->cmb_list, &node->cmb_list);
-	cdev->private->cmb = cmb;
+	cmb_data->hw_block = cmb;
+	cdev->private->cmb = cmb_data;
 	ret = 0;
 out:
 	spin_unlock_irq(cdev->ccwlock);
@@ -385,7 +564,19 @@ alloc_cmb (struct ccw_device *cdev)
 	int ret;
 	struct cmb *mem;
 	ssize_t size;
+	struct cmb_data *cmb_data;
+
+	/* Allocate private cmb_data. */
+	cmb_data = kzalloc(sizeof(struct cmb_data), GFP_KERNEL);
+	if (!cmb_data)
+		return -ENOMEM;
 
+	cmb_data->last_block = kzalloc(sizeof(struct cmb), GFP_KERNEL);
+	if (!cmb_data->last_block) {
+		kfree(cmb_data);
+		return -ENOMEM;
+	}
+	cmb_data->size = sizeof(struct cmb);
 	spin_lock(&cmb_area.lock);
 
 	if (!cmb_area.mem) {
@@ -414,29 +605,36 @@ alloc_cmb (struct ccw_device *cdev)
 	}
 
 	/* do the actual allocation */
-	ret = alloc_cmb_single(cdev);
+	ret = alloc_cmb_single(cdev, cmb_data);
 out:
 	spin_unlock(&cmb_area.lock);
-
+	if (ret) {
+		kfree(cmb_data->last_block);
+		kfree(cmb_data);
+	}
 	return ret;
 }
 
-static void
-free_cmb(struct ccw_device *cdev)
+static void free_cmb(struct ccw_device *cdev)
 {
 	struct ccw_device_private *priv;
-
-	priv = cdev->private;
+	struct cmb_data *cmb_data;
 
 	spin_lock(&cmb_area.lock);
 	spin_lock_irq(cdev->ccwlock);
 
+	priv = cdev->private;
+
 	if (list_empty(&priv->cmb_list)) {
 		/* already freed */
 		goto out;
 	}
 
+	cmb_data = priv->cmb;
 	priv->cmb = NULL;
+	if (cmb_data)
+		kfree(cmb_data->last_block);
+	kfree(cmb_data);
 	list_del_init(&priv->cmb_list);
 
 	if (list_empty(&cmb_area.list)) {
@@ -451,83 +649,97 @@ out:
 	spin_unlock(&cmb_area.lock);
 }
 
-static int
-set_cmb(struct ccw_device *cdev, u32 mme)
+static int set_cmb(struct ccw_device *cdev, u32 mme)
 {
 	u16 offset;
+	struct cmb_data *cmb_data;
+	unsigned long flags;
 
-	if (!cdev->private->cmb)
+	spin_lock_irqsave(cdev->ccwlock, flags);
+	if (!cdev->private->cmb) {
+		spin_unlock_irqrestore(cdev->ccwlock, flags);
 		return -EINVAL;
-
-	offset = mme ? (struct cmb *)cdev->private->cmb - cmb_area.mem : 0;
+	}
+	cmb_data = cdev->private->cmb;
+	offset = mme ? (struct cmb *)cmb_data->hw_block - cmb_area.mem : 0;
+	spin_unlock_irqrestore(cdev->ccwlock, flags);
 
 	return set_schib_wait(cdev, mme, 0, offset);
 }
 
-static u64
-read_cmb (struct ccw_device *cdev, int index)
+static u64 read_cmb (struct ccw_device *cdev, int index)
 {
-	/* yes, we have to put it on the stack
-	 * because the cmb must only be accessed
-	 * atomically, e.g. with mvc */
-	struct cmb cmb;
-	unsigned long flags;
+	struct cmb *cmb;
 	u32 val;
+	int ret;
+	unsigned long flags;
+
+	ret = cmf_cmb_copy_wait(cdev);
+	if (ret < 0)
+		return 0;
 
 	spin_lock_irqsave(cdev->ccwlock, flags);
 	if (!cdev->private->cmb) {
-		spin_unlock_irqrestore(cdev->ccwlock, flags);
-		return 0;
+		ret = 0;
+		goto out;
 	}
-
-	cmb = *(struct cmb*)cdev->private->cmb;
-	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	cmb = ((struct cmb_data *)cdev->private->cmb)->last_block;
 
 	switch (index) {
 	case cmb_ssch_rsch_count:
-		return cmb.ssch_rsch_count;
+		ret = cmb->ssch_rsch_count;
+		goto out;
 	case cmb_sample_count:
-		return cmb.sample_count;
+		ret = cmb->sample_count;
+		goto out;
 	case cmb_device_connect_time:
-		val = cmb.device_connect_time;
+		val = cmb->device_connect_time;
 		break;
 	case cmb_function_pending_time:
-		val = cmb.function_pending_time;
+		val = cmb->function_pending_time;
 		break;
 	case cmb_device_disconnect_time:
-		val = cmb.device_disconnect_time;
+		val = cmb->device_disconnect_time;
 		break;
 	case cmb_control_unit_queuing_time:
-		val = cmb.control_unit_queuing_time;
+		val = cmb->control_unit_queuing_time;
 		break;
 	case cmb_device_active_only_time:
-		val = cmb.device_active_only_time;
+		val = cmb->device_active_only_time;
 		break;
 	default:
-		return 0;
+		ret = 0;
+		goto out;
 	}
-	return time_to_avg_nsec(val, cmb.sample_count);
+	ret = time_to_avg_nsec(val, cmb->sample_count);
+out:
+	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	return ret;
 }
 
-static int
-readall_cmb (struct ccw_device *cdev, struct cmbdata *data)
+static int readall_cmb (struct ccw_device *cdev, struct cmbdata *data)
 {
-	/* yes, we have to put it on the stack
-	 * because the cmb must only be accessed
-	 * atomically, e.g. with mvc */
-	struct cmb cmb;
-	unsigned long flags;
+	struct cmb *cmb;
+	struct cmb_data *cmb_data;
 	u64 time;
+	unsigned long flags;
+	int ret;
 
+	ret = cmf_cmb_copy_wait(cdev);
+	if (ret < 0)
+		return ret;
 	spin_lock_irqsave(cdev->ccwlock, flags);
-	if (!cdev->private->cmb) {
-		spin_unlock_irqrestore(cdev->ccwlock, flags);
-		return -ENODEV;
+	cmb_data = cdev->private->cmb;
+	if (!cmb_data) {
+		ret = -ENODEV;
+		goto out;
 	}
-
-	cmb = *(struct cmb*)cdev->private->cmb;
-	time = get_clock() - cdev->private->cmb_start_time;
-	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	if (cmb_data->last_update == 0) {
+		ret = -EAGAIN;
+		goto out;
+	}
+	cmb = cmb_data->last_block;
+	time = cmb_data->last_update - cdev->private->cmb_start_time;
 
 	memset(data, 0, sizeof(struct cmbdata));
 
@@ -538,31 +750,32 @@ readall_cmb (struct ccw_device *cdev, struct cmbdata *data)
 	data->elapsed_time = (time * 1000) >> 12;
 
 	/* copy data to new structure */
-	data->ssch_rsch_count = cmb.ssch_rsch_count;
-	data->sample_count = cmb.sample_count;
+	data->ssch_rsch_count = cmb->ssch_rsch_count;
+	data->sample_count = cmb->sample_count;
 
 	/* time fields are converted to nanoseconds while copying */
-	data->device_connect_time = time_to_nsec(cmb.device_connect_time);
-	data->function_pending_time = time_to_nsec(cmb.function_pending_time);
-	data->device_disconnect_time = time_to_nsec(cmb.device_disconnect_time);
+	data->device_connect_time = time_to_nsec(cmb->device_connect_time);
+	data->function_pending_time = time_to_nsec(cmb->function_pending_time);
+	data->device_disconnect_time =
+		time_to_nsec(cmb->device_disconnect_time);
 	data->control_unit_queuing_time
-		= time_to_nsec(cmb.control_unit_queuing_time);
+		= time_to_nsec(cmb->control_unit_queuing_time);
 	data->device_active_only_time
-		= time_to_nsec(cmb.device_active_only_time);
+		= time_to_nsec(cmb->device_active_only_time);
+	ret = 0;
+out:
+	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	return ret;
+}
 
-	return 0;
+static void reset_cmb(struct ccw_device *cdev)
+{
+	cmf_generic_reset(cdev);
 }
 
-static void
-reset_cmb(struct ccw_device *cdev)
+static void * align_cmb(void *area)
 {
-	struct cmb *cmb;
-	spin_lock_irq(cdev->ccwlock);
-	cmb = cdev->private->cmb;
-	if (cmb)
-		memset (cmb, 0, sizeof (*cmb));
-	cdev->private->cmb_start_time = get_clock();
-	spin_unlock_irq(cdev->ccwlock);
+	return area;
 }
 
 static struct attribute_group cmf_attr_group;
@@ -574,6 +787,7 @@ static struct cmb_operations cmbops_basic = {
 	.read	= read_cmb,
 	.readall    = readall_cmb,
 	.reset	    = reset_cmb,
+	.align	    = align_cmb,
 	.attr_group = &cmf_attr_group,
 };
 
@@ -610,22 +824,34 @@ static inline struct cmbe* cmbe_align(struct cmbe *c)
 	return (struct cmbe*)addr;
 }
 
-static int
-alloc_cmbe (struct ccw_device *cdev)
+static int alloc_cmbe (struct ccw_device *cdev)
 {
 	struct cmbe *cmbe;
-	cmbe = kmalloc (sizeof (*cmbe) * 2, GFP_KERNEL);
+	struct cmb_data *cmb_data;
+	int ret;
+
+	cmbe = kzalloc (sizeof (*cmbe) * 2, GFP_KERNEL);
 	if (!cmbe)
 		return -ENOMEM;
-
+	cmb_data = kzalloc(sizeof(struct cmb_data), GFP_KERNEL);
+	if (!cmb_data) {
+		ret = -ENOMEM;
+		goto out_free;
+	}
+	cmb_data->last_block = kzalloc(sizeof(struct cmbe), GFP_KERNEL);
+	if (!cmb_data->last_block) {
+		ret = -ENOMEM;
+		goto out_free;
+	}
+	cmb_data->size = sizeof(struct cmbe);
 	spin_lock_irq(cdev->ccwlock);
 	if (cdev->private->cmb) {
-		kfree(cmbe);
 		spin_unlock_irq(cdev->ccwlock);
-		return -EBUSY;
+		ret = -EBUSY;
+		goto out_free;
 	}
-
-	cdev->private->cmb = cmbe;
+	cmb_data->hw_block = cmbe;
+	cdev->private->cmb = cmb_data;
 	spin_unlock_irq(cdev->ccwlock);
 
 	/* activate global measurement if this is the first channel */
@@ -636,14 +862,24 @@ alloc_cmbe (struct ccw_device *cdev)
 	spin_unlock(&cmb_area.lock);
 
 	return 0;
+out_free:
+	if (cmb_data)
+		kfree(cmb_data->last_block);
+	kfree(cmb_data);
+	kfree(cmbe);
+	return ret;
 }
 
-static void
-free_cmbe (struct ccw_device *cdev)
+static void free_cmbe (struct ccw_device *cdev)
 {
+	struct cmb_data *cmb_data;
+
 	spin_lock_irq(cdev->ccwlock);
-	kfree(cdev->private->cmb);
+	cmb_data = cdev->private->cmb;
 	cdev->private->cmb = NULL;
+	if (cmb_data)
+		kfree(cmb_data->last_block);
+	kfree(cmb_data);
 	spin_unlock_irq(cdev->ccwlock);
 
 	/* deactivate global measurement if this is the last channel */
@@ -654,89 +890,105 @@ free_cmbe (struct ccw_device *cdev)
 	spin_unlock(&cmb_area.lock);
 }
 
-static int
-set_cmbe(struct ccw_device *cdev, u32 mme)
+static int set_cmbe(struct ccw_device *cdev, u32 mme)
 {
 	unsigned long mba;
+	struct cmb_data *cmb_data;
+	unsigned long flags;
 
-	if (!cdev->private->cmb)
+	spin_lock_irqsave(cdev->ccwlock, flags);
+	if (!cdev->private->cmb) {
+		spin_unlock_irqrestore(cdev->ccwlock, flags);
 		return -EINVAL;
-	mba = mme ? (unsigned long) cmbe_align(cdev->private->cmb) : 0;
+	}
+	cmb_data = cdev->private->cmb;
+	mba = mme ? (unsigned long) cmbe_align(cmb_data->hw_block) : 0;
+	spin_unlock_irqrestore(cdev->ccwlock, flags);
 
 	return set_schib_wait(cdev, mme, 1, mba);
 }
 
 
-u64
-read_cmbe (struct ccw_device *cdev, int index)
+static u64 read_cmbe (struct ccw_device *cdev, int index)
 {
-	/* yes, we have to put it on the stack
-	 * because the cmb must only be accessed
-	 * atomically, e.g. with mvc */
-	struct cmbe cmb;
-	unsigned long flags;
+	struct cmbe *cmb;
+	struct cmb_data *cmb_data;
 	u32 val;
+	int ret;
+	unsigned long flags;
 
-	spin_lock_irqsave(cdev->ccwlock, flags);
-	if (!cdev->private->cmb) {
-		spin_unlock_irqrestore(cdev->ccwlock, flags);
+	ret = cmf_cmb_copy_wait(cdev);
+	if (ret < 0)
 		return 0;
-	}
 
-	cmb = *cmbe_align(cdev->private->cmb);
-	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	spin_lock_irqsave(cdev->ccwlock, flags);
+	cmb_data = cdev->private->cmb;
+	if (!cmb_data) {
+		ret = 0;
+		goto out;
+	}
+	cmb = cmb_data->last_block;
 
 	switch (index) {
 	case cmb_ssch_rsch_count:
-		return cmb.ssch_rsch_count;
+		ret = cmb->ssch_rsch_count;
+		goto out;
 	case cmb_sample_count:
-		return cmb.sample_count;
+		ret = cmb->sample_count;
+		goto out;
 	case cmb_device_connect_time:
-		val = cmb.device_connect_time;
+		val = cmb->device_connect_time;
 		break;
 	case cmb_function_pending_time:
-		val = cmb.function_pending_time;
+		val = cmb->function_pending_time;
 		break;
 	case cmb_device_disconnect_time:
-		val = cmb.device_disconnect_time;
+		val = cmb->device_disconnect_time;
 		break;
 	case cmb_control_unit_queuing_time:
-		val = cmb.control_unit_queuing_time;
+		val = cmb->control_unit_queuing_time;
 		break;
 	case cmb_device_active_only_time:
-		val = cmb.device_active_only_time;
+		val = cmb->device_active_only_time;
 		break;
 	case cmb_device_busy_time:
-		val = cmb.device_busy_time;
+		val = cmb->device_busy_time;
 		break;
 	case cmb_initial_command_response_time:
-		val = cmb.initial_command_response_time;
+		val = cmb->initial_command_response_time;
 		break;
 	default:
-		return 0;
+		ret = 0;
+		goto out;
 	}
-	return time_to_avg_nsec(val, cmb.sample_count);
+	ret = time_to_avg_nsec(val, cmb->sample_count);
+out:
+	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	return ret;
 }
 
-static int
-readall_cmbe (struct ccw_device *cdev, struct cmbdata *data)
+static int readall_cmbe (struct ccw_device *cdev, struct cmbdata *data)
 {
-	/* yes, we have to put it on the stack
-	 * because the cmb must only be accessed
-	 * atomically, e.g. with mvc */
-	struct cmbe cmb;
-	unsigned long flags;
+	struct cmbe *cmb;
+	struct cmb_data *cmb_data;
 	u64 time;
+	unsigned long flags;
+	int ret;
 
+	ret = cmf_cmb_copy_wait(cdev);
+	if (ret < 0)
+		return ret;
 	spin_lock_irqsave(cdev->ccwlock, flags);
-	if (!cdev->private->cmb) {
-		spin_unlock_irqrestore(cdev->ccwlock, flags);
-		return -ENODEV;
+	cmb_data = cdev->private->cmb;
+	if (!cmb_data) {
+		ret = -ENODEV;
+		goto out;
 	}
-
-	cmb = *cmbe_align(cdev->private->cmb);
-	time = get_clock() - cdev->private->cmb_start_time;
-	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	if (cmb_data->last_update == 0) {
+		ret = -EAGAIN;
+		goto out;
+	}
+	time = cmb_data->last_update - cdev->private->cmb_start_time;
 
 	memset (data, 0, sizeof(struct cmbdata));
 
@@ -746,35 +998,38 @@ readall_cmbe (struct ccw_device *cdev, struct cmbdata *data)
 	/* conver to nanoseconds */
 	data->elapsed_time = (time * 1000) >> 12;
 
+	cmb = cmb_data->last_block;
 	/* copy data to new structure */
-	data->ssch_rsch_count = cmb.ssch_rsch_count;
-	data->sample_count = cmb.sample_count;
+	data->ssch_rsch_count = cmb->ssch_rsch_count;
+	data->sample_count = cmb->sample_count;
 
 	/* time fields are converted to nanoseconds while copying */
-	data->device_connect_time = time_to_nsec(cmb.device_connect_time);
-	data->function_pending_time = time_to_nsec(cmb.function_pending_time);
-	data->device_disconnect_time = time_to_nsec(cmb.device_disconnect_time);
+	data->device_connect_time = time_to_nsec(cmb->device_connect_time);
+	data->function_pending_time = time_to_nsec(cmb->function_pending_time);
+	data->device_disconnect_time =
+		time_to_nsec(cmb->device_disconnect_time);
 	data->control_unit_queuing_time
-		= time_to_nsec(cmb.control_unit_queuing_time);
+		= time_to_nsec(cmb->control_unit_queuing_time);
 	data->device_active_only_time
-		= time_to_nsec(cmb.device_active_only_time);
-	data->device_busy_time = time_to_nsec(cmb.device_busy_time);
+		= time_to_nsec(cmb->device_active_only_time);
+	data->device_busy_time = time_to_nsec(cmb->device_busy_time);
 	data->initial_command_response_time
-		= time_to_nsec(cmb.initial_command_response_time);
+		= time_to_nsec(cmb->initial_command_response_time);
 
-	return 0;
+	ret = 0;
+out:
+	spin_unlock_irqrestore(cdev->ccwlock, flags);
+	return ret;
 }
 
-static void
-reset_cmbe(struct ccw_device *cdev)
+static void reset_cmbe(struct ccw_device *cdev)
 {
-	struct cmbe *cmb;
-	spin_lock_irq(cdev->ccwlock);
-	cmb = cmbe_align(cdev->private->cmb);
-	if (cmb)
-		memset (cmb, 0, sizeof (*cmb));
-	cdev->private->cmb_start_time = get_clock();
-	spin_unlock_irq(cdev->ccwlock);
+	cmf_generic_reset(cdev);
+}
+
+static void * align_cmbe(void *area)
+{
+	return cmbe_align(area);
 }
 
 static struct attribute_group cmf_attr_group_ext;
@@ -786,6 +1041,7 @@ static struct cmb_operations cmbops_extended = {
 	.read	    = read_cmbe,
 	.readall    = readall_cmbe,
 	.reset	    = reset_cmbe,
+	.align	    = align_cmbe,
 	.attr_group = &cmf_attr_group_ext,
 };
 
@@ -803,14 +1059,19 @@ cmb_show_avg_sample_interval(struct device *dev, struct device_attribute *attr,
 	struct ccw_device *cdev;
 	long interval;
 	unsigned long count;
+	struct cmb_data *cmb_data;
 
 	cdev = to_ccwdev(dev);
-	interval  = get_clock() - cdev->private->cmb_start_time;
 	count = cmf_read(cdev, cmb_sample_count);
-	if (count)
+	spin_lock_irq(cdev->ccwlock);
+	cmb_data = cdev->private->cmb;
+	if (count) {
+		interval = cmb_data->last_update -
+			cdev->private->cmb_start_time;
 		interval /= count;
-	else
+	} else
 		interval = -1;
+	spin_unlock_irq(cdev->ccwlock);
 	return sprintf(buf, "%ld\n", interval);
 }
 
@@ -823,7 +1084,10 @@ cmb_show_avg_utilization(struct device *dev, struct device_attribute *attr, char
 	int ret;
 
 	ret = cmf_readall(to_ccwdev(dev), &data);
-	if (ret)
+	if (ret == -EAGAIN || ret == -ENODEV)
+		/* No data (yet/currently) available to use for calculation. */
+		return sprintf(buf, "n/a\n");
+	else if (ret)
 		return ret;
 
 	utilization = data.device_connect_time +
@@ -982,6 +1246,13 @@ cmf_readall(struct ccw_device *cdev, struct cmbdata *data)
 	return cmbops->readall(cdev, data);
 }
 
+/* Reenable cmf when a disconnected device becomes available again. */
+int cmf_reenable(struct ccw_device *cdev)
+{
+	cmbops->reset(cdev);
+	return cmbops->set(cdev, 2);
+}
+
 static int __init
 init_cmf(void)
 {
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 74ea8aac4b7..1d3be80797f 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -19,9 +19,11 @@
 #include "cio_debug.h"
 #include "ioasm.h"
 #include "chsc.h"
+#include "device.h"
 
 int need_rescan = 0;
 int css_init_done = 0;
+static int need_reprobe = 0;
 static int max_ssid = 0;
 
 struct channel_subsystem *css[__MAX_CSSID + 1];
@@ -339,6 +341,67 @@ typedef void (*workfunc)(void *);
 DECLARE_WORK(slow_path_work, (workfunc)css_trigger_slow_path, NULL);
 struct workqueue_struct *slow_path_wq;
 
+/* Reprobe subchannel if unregistered. */
+static int reprobe_subchannel(struct subchannel_id schid, void *data)
+{
+	struct subchannel *sch;
+	int ret;
+
+	CIO_DEBUG(KERN_INFO, 6, "cio: reprobe 0.%x.%04x\n",
+		  schid.ssid, schid.sch_no);
+	if (need_reprobe)
+		return -EAGAIN;
+
+	sch = get_subchannel_by_schid(schid);
+	if (sch) {
+		/* Already known. */
+		put_device(&sch->dev);
+		return 0;
+	}
+
+	ret = css_probe_device(schid);
+	switch (ret) {
+	case 0:
+		break;
+	case -ENXIO:
+	case -ENOMEM:
+		/* These should abort looping */
+		break;
+	default:
+		ret = 0;
+	}
+
+	return ret;
+}
+
+/* Work function used to reprobe all unregistered subchannels. */
+static void reprobe_all(void *data)
+{
+	int ret;
+
+	CIO_MSG_EVENT(2, "reprobe start\n");
+
+	need_reprobe = 0;
+	/* Make sure initial subchannel scan is done. */
+	wait_event(ccw_device_init_wq,
+		   atomic_read(&ccw_device_init_count) == 0);
+	ret = for_each_subchannel(reprobe_subchannel, NULL);
+
+	CIO_MSG_EVENT(2, "reprobe done (rc=%d, need_reprobe=%d)\n", ret,
+		      need_reprobe);
+}
+
+DECLARE_WORK(css_reprobe_work, reprobe_all, NULL);
+
+/* Schedule reprobing of all unregistered subchannels. */
+void css_schedule_reprobe(void)
+{
+	need_reprobe = 1;
+	queue_work(ccw_device_work, &css_reprobe_work);
+}
+
+EXPORT_SYMBOL_GPL(css_schedule_reprobe);
+
 /*
  * Rescan for new devices. FIXME: This is slow.
  * This function is called when we have lost CRWs due to overflows and we have
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 8e3053c2a45..eafde43e841 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -133,8 +133,8 @@ struct css_driver io_subchannel_driver = {
 
 struct workqueue_struct *ccw_device_work;
 struct workqueue_struct *ccw_device_notify_work;
-static wait_queue_head_t ccw_device_init_wq;
-static atomic_t ccw_device_init_count;
+wait_queue_head_t ccw_device_init_wq;
+atomic_t ccw_device_init_count;
 
 static int __init
 init_ccw_bus_type (void)
diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h
index 11587ebb728..00be9a5b4ac 100644
--- a/drivers/s390/cio/device.h
+++ b/drivers/s390/cio/device.h
@@ -1,6 +1,10 @@
 #ifndef S390_DEVICE_H
 #define S390_DEVICE_H
 
+#include <asm/ccwdev.h>
+#include <asm/atomic.h>
+#include <linux/wait.h>
+
 /*
  * states of the device statemachine
  */
@@ -23,6 +27,7 @@ enum dev_state {
 	DEV_STATE_DISCONNECTED,
 	DEV_STATE_DISCONNECTED_SENSE_ID,
 	DEV_STATE_CMFCHANGE,
+	DEV_STATE_CMFUPDATE,
 	/* last element! */
 	NR_DEV_STATES
 };
@@ -67,6 +72,8 @@ dev_fsm_final_state(struct ccw_device *cdev)
 
 extern struct workqueue_struct *ccw_device_work;
 extern struct workqueue_struct *ccw_device_notify_work;
+extern wait_queue_head_t ccw_device_init_wq;
+extern atomic_t ccw_device_init_count;
 
 void io_subchannel_recog_done(struct ccw_device *cdev);
 
@@ -112,5 +119,8 @@ int ccw_device_stlck(struct ccw_device *);
 void ccw_device_set_timeout(struct ccw_device *, int);
 extern struct subchannel_id ccw_device_get_subchannel_id(struct ccw_device *);
 
+/* Channel measurement facility related */
 void retry_set_schib(struct ccw_device *cdev);
+void cmf_retry_copy_block(struct ccw_device *);
+int cmf_reenable(struct ccw_device *);
 #endif
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 49ec562d7f6..7d0dd72635e 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -336,8 +336,11 @@ ccw_device_oper_notify(void *data)
 	if (!ret)
 		/* Driver doesn't want device back. */
 		ccw_device_do_unreg_rereg((void *)cdev);
-	else
+	else {
+		/* Reenable channel measurements, if needed. */
+		cmf_reenable(cdev);
 		wake_up(&cdev->private->wait_q);
+	}
 }
 
 /*
@@ -861,6 +864,8 @@ ccw_device_clear_verify(struct ccw_device *cdev, enum dev_event dev_event)
 	irb = (struct irb *) __LC_IRB;
 	/* Accumulate status. We don't do basic sense. */
 	ccw_device_accumulate_irb(cdev, irb);
+	/* Remember to clear irb to avoid residuals. */
+	memset(&cdev->private->irb, 0, sizeof(struct irb));
 	/* Try to start delayed device verification. */
 	ccw_device_online_verify(cdev, 0);
 	/* Note: Don't call handler for cio initiated clear! */
@@ -1093,6 +1098,13 @@ ccw_device_change_cmfstate(struct ccw_device *cdev, enum dev_event dev_event)
 	dev_fsm_event(cdev, dev_event);
 }
 
+static void ccw_device_update_cmfblock(struct ccw_device *cdev,
+				       enum dev_event dev_event)
+{
+	cmf_retry_copy_block(cdev);
+	cdev->private->state = DEV_STATE_ONLINE;
+	dev_fsm_event(cdev, dev_event);
+}
 
 static void
 ccw_device_quiesce_done(struct ccw_device *cdev, enum dev_event dev_event)
@@ -1247,6 +1259,12 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = {
 		[DEV_EVENT_TIMEOUT]	= ccw_device_change_cmfstate,
 		[DEV_EVENT_VERIFY]	= ccw_device_change_cmfstate,
 	},
+	[DEV_STATE_CMFUPDATE] = {
+		[DEV_EVENT_NOTOPER]	= ccw_device_update_cmfblock,
+		[DEV_EVENT_INTERRUPT]	= ccw_device_update_cmfblock,
+		[DEV_EVENT_TIMEOUT]	= ccw_device_update_cmfblock,
+		[DEV_EVENT_VERIFY]	= ccw_device_update_cmfblock,
+	},
 };
 
 /*
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 795abb5a65b..b266ad8e14f 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -78,7 +78,8 @@ ccw_device_start_key(struct ccw_device *cdev, struct ccw1 *cpa,
 		return -ENODEV;
 	if (cdev->private->state == DEV_STATE_NOT_OPER)
 		return -ENODEV;
-	if (cdev->private->state == DEV_STATE_VERIFY) {
+	if (cdev->private->state == DEV_STATE_VERIFY ||
+	    cdev->private->state == DEV_STATE_CLEAR_VERIFY) {
 		/* Remember to fake irb when finished. */
 		if (!cdev->private->flags.fake_irb) {
 			cdev->private->flags.fake_irb = 1;
@@ -270,7 +271,8 @@ ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb)
 		 * We didn't get channel end / device end. Check if path
 		 * verification has been started; we can retry after it has
 		 * finished. We also retry unit checks except for command reject
-		 * or intervention required.
+		 * or intervention required. Also check for long busy
+		 * conditions.
 		 */
 		 if (cdev->private->flags.doverify ||
 			 cdev->private->state == DEV_STATE_VERIFY)
@@ -279,6 +281,10 @@ ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb)
 		     !(irb->ecw[0] &
 		       (SNS0_CMD_REJECT | SNS0_INTERVENTION_REQ)))
 			 cdev->private->intparm = -EAGAIN;
+		else if ((irb->scsw.dstat & DEV_STAT_ATTENTION) &&
+			 (irb->scsw.dstat & DEV_STAT_DEV_END) &&
+			 (irb->scsw.dstat & DEV_STAT_UNIT_EXCEP))
+			cdev->private->intparm = -EAGAIN;
 		 else
 			 cdev->private->intparm = -EIO;
 			 
diff --git a/drivers/s390/crypto/z90main.c b/drivers/s390/crypto/z90main.c
index 982acc7303e..b2f20ab8431 100644
--- a/drivers/s390/crypto/z90main.c
+++ b/drivers/s390/crypto/z90main.c
@@ -411,7 +411,6 @@ static struct miscdevice z90crypt_misc_device = {
 	.minor	    = Z90CRYPT_MINOR,
 	.name	    = DEV_NAME,
 	.fops	    = &z90crypt_fops,
-	.devfs_name = DEV_NAME
 };
 
 /**
diff --git a/drivers/s390/s390mach.c b/drivers/s390/s390mach.c
index f99e55308b3..8dc75002acb 100644
--- a/drivers/s390/s390mach.c
+++ b/drivers/s390/s390mach.c
@@ -14,6 +14,7 @@
 #include <linux/errno.h>
 #include <linux/workqueue.h>
 #include <linux/time.h>
+#include <linux/kthread.h>
 
 #include <asm/lowcore.h>
 
@@ -56,8 +57,6 @@ s390_collect_crw_info(void *param)
 	unsigned int chain;
 
 	sem = (struct semaphore *)param;
-	/* Set a nice name. */
-	daemonize("kmcheck");
 repeat:
 	down_interruptible(sem);
 	slow = 0;
@@ -516,7 +515,7 @@ arch_initcall(machine_check_init);
 static int __init
 machine_check_crw_init (void)
 {
-	kernel_thread(s390_collect_crw_info, &m_sem, CLONE_FS|CLONE_FILES);
+	kthread_run(s390_collect_crw_info, &m_sem, "kmcheck");
 	ctl_set_bit(14, 28);	/* enable channel report MCH */
 	return 0;
 }