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

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (24 commits)
  [S390] drivers/s390/char: Use kmemdup
  [S390] drivers/s390/char: Use kstrdup
  [S390] debug: enable exception-trace debug facility
  [S390] s390_hypfs: Add new attributes
  [S390] qdio: remove API wrappers
  [S390] qdio: set correct bit in dsci
  [S390] qdio: dont convert timestamps to microseconds
  [S390] qdio: remove memset hack
  [S390] qdio: prevent starvation on PCI devices
  [S390] qdio: count number of qdio interrupts
  [S390] user space fault: report fault before calling do_exit
  [S390] topology: expose core identifier
  [S390] dasd: remove uid from devmap
  [S390] dasd: add dynamic pav toleration
  [S390] vdso: add missing vdso_install target
  [S390] vdso: remove redundant check for CONFIG_64BIT
  [S390] avoid default_llseek in s390 drivers
  [S390] vmcp: disallow modular build
  [S390] add breaking event address for user space
  [S390] virtualization aware cpu measurement
  ...

22 files changed, 396 insertions, 305 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index fa2339cb1681..0e86247d791e 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -65,6 +65,7 @@ static void dasd_device_tasklet(struct dasd_device *);
 static void dasd_block_tasklet(struct dasd_block *);
 static void do_kick_device(struct work_struct *);
 static void do_restore_device(struct work_struct *);
+static void do_reload_device(struct work_struct *);
 static void dasd_return_cqr_cb(struct dasd_ccw_req *, void *);
 static void dasd_device_timeout(unsigned long);
 static void dasd_block_timeout(unsigned long);
@@ -115,6 +116,7 @@ struct dasd_device *dasd_alloc_device(void)
         device->timer.data = (unsigned long) device;
         INIT_WORK(&device->kick_work, do_kick_device);
         INIT_WORK(&device->restore_device, do_restore_device);
+        INIT_WORK(&device->reload_device, do_reload_device);
         device->state = DASD_STATE_NEW;
         device->target = DASD_STATE_NEW;
         mutex_init(&device->state_mutex);
@@ -521,6 +523,26 @@ void dasd_kick_device(struct dasd_device *device)
 }
 
 /*
+ * dasd_reload_device will schedule a call do do_reload_device to the kernel
+ * event daemon.
+ */
+static void do_reload_device(struct work_struct *work)
+{
+        struct dasd_device *device = container_of(work, struct dasd_device,
+                                                  reload_device);
+        device->discipline->reload(device);
+        dasd_put_device(device);
+}
+
+void dasd_reload_device(struct dasd_device *device)
+{
+        dasd_get_device(device);
+        /* queue call to dasd_reload_device to the kernel event daemon. */
+        schedule_work(&device->reload_device);
+}
+EXPORT_SYMBOL(dasd_reload_device);
+
+/*
  * dasd_restore_device will schedule a call do do_restore_device to the kernel
  * event daemon.
  */
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
index 6632649dd6aa..85bfd8794856 100644
--- a/drivers/s390/block/dasd_3990_erp.c
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -1418,9 +1418,29 @@ static struct dasd_ccw_req *dasd_3990_erp_inspect_alias(
                                                 struct dasd_ccw_req *erp)
 {
         struct dasd_ccw_req *cqr = erp->refers;
+        char *sense;
 
         if (cqr->block &&
             (cqr->block->base != cqr->startdev)) {
+
+                sense = dasd_get_sense(&erp->refers->irb);
+                /*
+                 * dynamic pav may have changed base alias mapping
+                 */
+                if (!test_bit(DASD_FLAG_OFFLINE, &cqr->startdev->flags) && sense
+                    && (sense[0] == 0x10) && (sense[7] == 0x0F)
+                    && (sense[8] == 0x67)) {
+                        /*
+                         * remove device from alias handling to prevent new
+                         * requests from being scheduled on the
+                         * wrong alias device
+                         */
+                        dasd_alias_remove_device(cqr->startdev);
+
+                        /* schedule worker to reload device */
+                        dasd_reload_device(cqr->startdev);
+                }
+
                 if (cqr->startdev->features & DASD_FEATURE_ERPLOG) {
                         DBF_DEV_EVENT(DBF_ERR, cqr->startdev,
                                     "ERP on alias device for request %p,"
diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c
index 8c4814258e93..4155805dcdff 100644
--- a/drivers/s390/block/dasd_alias.c
+++ b/drivers/s390/block/dasd_alias.c
@@ -190,20 +190,21 @@ int dasd_alias_make_device_known_to_lcu(struct dasd_device *device)
         struct alias_server *server, *newserver;
         struct alias_lcu *lcu, *newlcu;
         int is_lcu_known;
-        struct dasd_uid *uid;
+        struct dasd_uid uid;
 
         private = (struct dasd_eckd_private *) device->private;
-        uid = &private->uid;
+
+        device->discipline->get_uid(device, &uid);
         spin_lock_irqsave(&aliastree.lock, flags);
         is_lcu_known = 1;
-        server = _find_server(uid);
+        server = _find_server(&uid);
         if (!server) {
                 spin_unlock_irqrestore(&aliastree.lock, flags);
-                newserver = _allocate_server(uid);
+                newserver = _allocate_server(&uid);
                 if (IS_ERR(newserver))
                         return PTR_ERR(newserver);
                 spin_lock_irqsave(&aliastree.lock, flags);
-                server = _find_server(uid);
+                server = _find_server(&uid);
                 if (!server) {
                         list_add(&newserver->server, &aliastree.serverlist);
                         server = newserver;
@@ -214,14 +215,14 @@ int dasd_alias_make_device_known_to_lcu(struct dasd_device *device)
                 }
         }
 
-        lcu = _find_lcu(server, uid);
+        lcu = _find_lcu(server, &uid);
         if (!lcu) {
                 spin_unlock_irqrestore(&aliastree.lock, flags);
-                newlcu = _allocate_lcu(uid);
+                newlcu = _allocate_lcu(&uid);
                 if (IS_ERR(newlcu))
                         return PTR_ERR(newlcu);
                 spin_lock_irqsave(&aliastree.lock, flags);
-                lcu = _find_lcu(server, uid);
+                lcu = _find_lcu(server, &uid);
                 if (!lcu) {
                         list_add(&newlcu->lcu, &server->lculist);
                         lcu = newlcu;
@@ -256,20 +257,20 @@ void dasd_alias_lcu_setup_complete(struct dasd_device *device)
         unsigned long flags;
         struct alias_server *server;
         struct alias_lcu *lcu;
-        struct dasd_uid *uid;
+        struct dasd_uid uid;
 
         private = (struct dasd_eckd_private *) device->private;
-        uid = &private->uid;
+        device->discipline->get_uid(device, &uid);
         lcu = NULL;
         spin_lock_irqsave(&aliastree.lock, flags);
-        server = _find_server(uid);
+        server = _find_server(&uid);
         if (server)
-                lcu = _find_lcu(server, uid);
+                lcu = _find_lcu(server, &uid);
         spin_unlock_irqrestore(&aliastree.lock, flags);
         if (!lcu) {
                 DBF_EVENT_DEVID(DBF_ERR, device->cdev,
                                 "could not find lcu for %04x %02x",
-                                uid->ssid, uid->real_unit_addr);
+                                uid.ssid, uid.real_unit_addr);
                 WARN_ON(1);
                 return;
         }
@@ -282,20 +283,20 @@ void dasd_alias_wait_for_lcu_setup(struct dasd_device *device)
         unsigned long flags;
         struct alias_server *server;
         struct alias_lcu *lcu;
-        struct dasd_uid *uid;
+        struct dasd_uid uid;
 
         private = (struct dasd_eckd_private *) device->private;
-        uid = &private->uid;
+        device->discipline->get_uid(device, &uid);
         lcu = NULL;
         spin_lock_irqsave(&aliastree.lock, flags);
-        server = _find_server(uid);
+        server = _find_server(&uid);
         if (server)
-                lcu = _find_lcu(server, uid);
+                lcu = _find_lcu(server, &uid);
         spin_unlock_irqrestore(&aliastree.lock, flags);
         if (!lcu) {
                 DBF_EVENT_DEVID(DBF_ERR, device->cdev,
                                 "could not find lcu for %04x %02x",
-                                uid->ssid, uid->real_unit_addr);
+                                uid.ssid, uid.real_unit_addr);
                 WARN_ON(1);
                 return;
         }
@@ -314,9 +315,11 @@ void dasd_alias_disconnect_device_from_lcu(struct dasd_device *device)
         struct alias_lcu *lcu;
         struct alias_server *server;
         int was_pending;
+        struct dasd_uid uid;
 
         private = (struct dasd_eckd_private *) device->private;
         lcu = private->lcu;
+        device->discipline->get_uid(device, &uid);
         spin_lock_irqsave(&lcu->lock, flags);
         list_del_init(&device->alias_list);
         /* make sure that the workers don't use this device */
@@ -353,7 +356,7 @@ void dasd_alias_disconnect_device_from_lcu(struct dasd_device *device)
                         _schedule_lcu_update(lcu, NULL);
                 spin_unlock(&lcu->lock);
         }
-        server = _find_server(&private->uid);
+        server = _find_server(&uid);
         if (server && list_empty(&server->lculist)) {
                 list_del(&server->server);
                 _free_server(server);
@@ -366,19 +369,30 @@ void dasd_alias_disconnect_device_from_lcu(struct dasd_device *device)
  * in the lcu is up to date and will update the device uid before
  * adding it to a pav group.
  */
+
 static int _add_device_to_lcu(struct alias_lcu *lcu,
-                              struct dasd_device *device)
+                              struct dasd_device *device,
+                              struct dasd_device *pos)
 {
 
         struct dasd_eckd_private *private;
         struct alias_pav_group *group;
-        struct dasd_uid *uid;
+        struct dasd_uid uid;
+        unsigned long flags;
 
         private = (struct dasd_eckd_private *) device->private;
-        uid = &private->uid;
-        uid->type = lcu->uac->unit[uid->real_unit_addr].ua_type;
-        uid->base_unit_addr = lcu->uac->unit[uid->real_unit_addr].base_ua;
-        dasd_set_uid(device->cdev, &private->uid);
+
+        /* only lock if not already locked */
+        if (device != pos)
+                spin_lock_irqsave_nested(get_ccwdev_lock(device->cdev), flags,
+                                         CDEV_NESTED_SECOND);
+        private->uid.type = lcu->uac->unit[private->uid.real_unit_addr].ua_type;
+        private->uid.base_unit_addr =
+                lcu->uac->unit[private->uid.real_unit_addr].base_ua;
+        uid = private->uid;
+
+        if (device != pos)
+                spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
 
         /* if we have no PAV anyway, we don't need to bother with PAV groups */
         if (lcu->pav == NO_PAV) {
@@ -386,25 +400,25 @@ static int _add_device_to_lcu(struct alias_lcu *lcu,
                 return 0;
         }
 
-        group = _find_group(lcu, uid);
+        group = _find_group(lcu, &uid);
         if (!group) {
                 group = kzalloc(sizeof(*group), GFP_ATOMIC);
                 if (!group)
                         return -ENOMEM;
-                memcpy(group->uid.vendor, uid->vendor, sizeof(uid->vendor));
-                memcpy(group->uid.serial, uid->serial, sizeof(uid->serial));
-                group->uid.ssid = uid->ssid;
-                if (uid->type == UA_BASE_DEVICE)
-                        group->uid.base_unit_addr = uid->real_unit_addr;
+                memcpy(group->uid.vendor, uid.vendor, sizeof(uid.vendor));
+                memcpy(group->uid.serial, uid.serial, sizeof(uid.serial));
+                group->uid.ssid = uid.ssid;
+                if (uid.type == UA_BASE_DEVICE)
+                        group->uid.base_unit_addr = uid.real_unit_addr;
                 else
-                        group->uid.base_unit_addr = uid->base_unit_addr;
-                memcpy(group->uid.vduit, uid->vduit, sizeof(uid->vduit));
+                        group->uid.base_unit_addr = uid.base_unit_addr;
+                memcpy(group->uid.vduit, uid.vduit, sizeof(uid.vduit));
                 INIT_LIST_HEAD(&group->group);
                 INIT_LIST_HEAD(&group->baselist);
                 INIT_LIST_HEAD(&group->aliaslist);
                 list_add(&group->group, &lcu->grouplist);
         }
-        if (uid->type == UA_BASE_DEVICE)
+        if (uid.type == UA_BASE_DEVICE)
                 list_move(&device->alias_list, &group->baselist);
         else
                 list_move(&device->alias_list, &group->aliaslist);
@@ -525,7 +539,10 @@ static int _lcu_update(struct dasd_device *refdev, struct alias_lcu *lcu)
         if (rc)
                 return rc;
 
-        spin_lock_irqsave(&lcu->lock, flags);
+        /* need to take cdev lock before lcu lock */
+        spin_lock_irqsave_nested(get_ccwdev_lock(refdev->cdev), flags,
+                                 CDEV_NESTED_FIRST);
+        spin_lock(&lcu->lock);
         lcu->pav = NO_PAV;
         for (i = 0; i < MAX_DEVICES_PER_LCU; ++i) {
                 switch (lcu->uac->unit[i].ua_type) {
@@ -542,9 +559,10 @@ static int _lcu_update(struct dasd_device *refdev, struct alias_lcu *lcu)
 
         list_for_each_entry_safe(device, tempdev, &lcu->active_devices,
                                  alias_list) {
-                _add_device_to_lcu(lcu, device);
+                _add_device_to_lcu(lcu, device, refdev);
         }
-        spin_unlock_irqrestore(&lcu->lock, flags);
+        spin_unlock(&lcu->lock);
+        spin_unlock_irqrestore(get_ccwdev_lock(refdev->cdev), flags);
         return 0;
 }
 
@@ -628,9 +646,12 @@ int dasd_alias_add_device(struct dasd_device *device)
         private = (struct dasd_eckd_private *) device->private;
         lcu = private->lcu;
         rc = 0;
-        spin_lock_irqsave(&lcu->lock, flags);
+
+        /* need to take cdev lock before lcu lock */
+        spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+        spin_lock(&lcu->lock);
         if (!(lcu->flags & UPDATE_PENDING)) {
-                rc = _add_device_to_lcu(lcu, device);
+                rc = _add_device_to_lcu(lcu, device, device);
                 if (rc)
                         lcu->flags |= UPDATE_PENDING;
         }
@@ -638,10 +659,19 @@ int dasd_alias_add_device(struct dasd_device *device)
                 list_move(&device->alias_list, &lcu->active_devices);
                 _schedule_lcu_update(lcu, device);
         }
-        spin_unlock_irqrestore(&lcu->lock, flags);
+        spin_unlock(&lcu->lock);
+        spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
         return rc;
 }
 
+int dasd_alias_update_add_device(struct dasd_device *device)
+{
+        struct dasd_eckd_private *private;
+        private = (struct dasd_eckd_private *) device->private;
+        private->lcu->flags |= UPDATE_PENDING;
+        return dasd_alias_add_device(device);
+}
+
 int dasd_alias_remove_device(struct dasd_device *device)
 {
         struct dasd_eckd_private *private;
@@ -740,19 +770,30 @@ static void _restart_all_base_devices_on_lcu(struct alias_lcu *lcu)
         struct alias_pav_group *pavgroup;
         struct dasd_device *device;
         struct dasd_eckd_private *private;
+        unsigned long flags;
 
         /* active and inactive list can contain alias as well as base devices */
         list_for_each_entry(device, &lcu->active_devices, alias_list) {
                 private = (struct dasd_eckd_private *) device->private;
-                if (private->uid.type != UA_BASE_DEVICE)
+                spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+                if (private->uid.type != UA_BASE_DEVICE) {
+                        spin_unlock_irqrestore(get_ccwdev_lock(device->cdev),
+                                               flags);
                         continue;
+                }
+                spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
                 dasd_schedule_block_bh(device->block);
                 dasd_schedule_device_bh(device);
         }
         list_for_each_entry(device, &lcu->inactive_devices, alias_list) {
                 private = (struct dasd_eckd_private *) device->private;
-                if (private->uid.type != UA_BASE_DEVICE)
+                spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+                if (private->uid.type != UA_BASE_DEVICE) {
+                        spin_unlock_irqrestore(get_ccwdev_lock(device->cdev),
+                                               flags);
                         continue;
+                }
+                spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
                 dasd_schedule_block_bh(device->block);
                 dasd_schedule_device_bh(device);
         }
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index eff9c812c5c2..34d51dd4c539 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -49,7 +49,6 @@ struct dasd_devmap {
         unsigned int devindex;
         unsigned short features;
         struct dasd_device *device;
-        struct dasd_uid uid;
 };
 
 /*
@@ -936,42 +935,46 @@ dasd_device_status_show(struct device *dev, struct device_attribute *attr,
 
 static DEVICE_ATTR(status, 0444, dasd_device_status_show, NULL);
 
-static ssize_t
-dasd_alias_show(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t dasd_alias_show(struct device *dev,
+                               struct device_attribute *attr, char *buf)
 {
-        struct dasd_devmap *devmap;
-        int alias;
+        struct dasd_device *device;
+        struct dasd_uid uid;
 
-        devmap = dasd_find_busid(dev_name(dev));
-        spin_lock(&dasd_devmap_lock);
-        if (IS_ERR(devmap) || strlen(devmap->uid.vendor) == 0) {
-                spin_unlock(&dasd_devmap_lock);
+        device = dasd_device_from_cdev(to_ccwdev(dev));
+        if (IS_ERR(device))
                 return sprintf(buf, "0\n");
+
+        if (device->discipline && device->discipline->get_uid &&
+            !device->discipline->get_uid(device, &uid)) {
+                if (uid.type == UA_BASE_PAV_ALIAS ||
+                    uid.type == UA_HYPER_PAV_ALIAS)
+                        return sprintf(buf, "1\n");
         }
-        if (devmap->uid.type == UA_BASE_PAV_ALIAS ||
-            devmap->uid.type == UA_HYPER_PAV_ALIAS)
-                alias = 1;
-        else
-                alias = 0;
-        spin_unlock(&dasd_devmap_lock);
-        return sprintf(buf, alias ? "1\n" : "0\n");
+        dasd_put_device(device);
+
+        return sprintf(buf, "0\n");
 }
 
 static DEVICE_ATTR(alias, 0444, dasd_alias_show, NULL);
 
-static ssize_t
-dasd_vendor_show(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t dasd_vendor_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
 {
-        struct dasd_devmap *devmap;
+        struct dasd_device *device;
+        struct dasd_uid uid;
         char *vendor;
 
-        devmap = dasd_find_busid(dev_name(dev));
-        spin_lock(&dasd_devmap_lock);
-        if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0)
-                vendor = devmap->uid.vendor;
-        else
-                vendor = "";
-        spin_unlock(&dasd_devmap_lock);
+        device = dasd_device_from_cdev(to_ccwdev(dev));
+        vendor = "";
+        if (IS_ERR(device))
+                return snprintf(buf, PAGE_SIZE, "%s\n", vendor);
+
+        if (device->discipline && device->discipline->get_uid &&
+            !device->discipline->get_uid(device, &uid))
+                        vendor = uid.vendor;
+
+        dasd_put_device(device);
 
         return snprintf(buf, PAGE_SIZE, "%s\n", vendor);
 }
@@ -985,48 +988,51 @@ static DEVICE_ATTR(vendor, 0444, dasd_vendor_show, NULL);
 static ssize_t
 dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
-        struct dasd_devmap *devmap;
+        struct dasd_device *device;
+        struct dasd_uid uid;
         char uid_string[UID_STRLEN];
         char ua_string[3];
-        struct dasd_uid *uid;
 
-        devmap = dasd_find_busid(dev_name(dev));
-        spin_lock(&dasd_devmap_lock);
-        if (IS_ERR(devmap) || strlen(devmap->uid.vendor) == 0) {
-                spin_unlock(&dasd_devmap_lock);
-                return sprintf(buf, "\n");
-        }
-        uid = &devmap->uid;
-        switch (uid->type) {
-        case UA_BASE_DEVICE:
-                sprintf(ua_string, "%02x", uid->real_unit_addr);
-                break;
-        case UA_BASE_PAV_ALIAS:
-                sprintf(ua_string, "%02x", uid->base_unit_addr);
-                break;
-        case UA_HYPER_PAV_ALIAS:
-                sprintf(ua_string, "xx");
-                break;
-        default:
-                /* should not happen, treat like base device */
-                sprintf(ua_string, "%02x", uid->real_unit_addr);
-                break;
+        device = dasd_device_from_cdev(to_ccwdev(dev));
+        uid_string[0] = 0;
+        if (IS_ERR(device))
+                return snprintf(buf, PAGE_SIZE, "%s\n", uid_string);
+
+        if (device->discipline && device->discipline->get_uid &&
+            !device->discipline->get_uid(device, &uid)) {
+                switch (uid.type) {
+                case UA_BASE_DEVICE:
+                        snprintf(ua_string, sizeof(ua_string), "%02x",
+                                 uid.real_unit_addr);
+                        break;
+                case UA_BASE_PAV_ALIAS:
+                        snprintf(ua_string, sizeof(ua_string), "%02x",
+                                 uid.base_unit_addr);
+                        break;
+                case UA_HYPER_PAV_ALIAS:
+                        snprintf(ua_string, sizeof(ua_string), "xx");
+                        break;
+                default:
+                        /* should not happen, treat like base device */
+                        snprintf(ua_string, sizeof(ua_string), "%02x",
+                                 uid.real_unit_addr);
+                        break;
+                }
+
+                if (strlen(uid.vduit) > 0)
+                        snprintf(uid_string, sizeof(uid_string),
+                                 "%s.%s.%04x.%s.%s",
+                                 uid.vendor, uid.serial, uid.ssid, ua_string,
+                                 uid.vduit);
+                else
+                        snprintf(uid_string, sizeof(uid_string),
+                                 "%s.%s.%04x.%s",
+                                 uid.vendor, uid.serial, uid.ssid, ua_string);
         }
-        if (strlen(uid->vduit) > 0)
-                snprintf(uid_string, sizeof(uid_string),
-                         "%s.%s.%04x.%s.%s",
-                         uid->vendor, uid->serial,
-                         uid->ssid, ua_string,
-                         uid->vduit);
-        else
-                snprintf(uid_string, sizeof(uid_string),
-                         "%s.%s.%04x.%s",
-                         uid->vendor, uid->serial,
-                         uid->ssid, ua_string);
-        spin_unlock(&dasd_devmap_lock);
+        dasd_put_device(device);
+
         return snprintf(buf, PAGE_SIZE, "%s\n", uid_string);
 }
-
 static DEVICE_ATTR(uid, 0444, dasd_uid_show, NULL);
 
 /*
@@ -1094,50 +1100,6 @@ static struct attribute_group dasd_attr_group = {
 };
 
 /*
- * Return copy of the device unique identifier.
- */
-int
-dasd_get_uid(struct ccw_device *cdev, struct dasd_uid *uid)
-{
-        struct dasd_devmap *devmap;
-
-        devmap = dasd_find_busid(dev_name(&cdev->dev));
-        if (IS_ERR(devmap))
-                return PTR_ERR(devmap);
-        spin_lock(&dasd_devmap_lock);
-        *uid = devmap->uid;
-        spin_unlock(&dasd_devmap_lock);
-        return 0;
-}
-EXPORT_SYMBOL_GPL(dasd_get_uid);
-
-/*
- * Register the given device unique identifier into devmap struct.
- * In addition check if the related storage server subsystem ID is already
- * contained in the dasd_server_ssid_list. If subsystem ID is not contained,
- * create new entry.
- * 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;
-
-        devmap = dasd_find_busid(dev_name(&cdev->dev));
-        if (IS_ERR(devmap))
-                return PTR_ERR(devmap);
-
-        spin_lock(&dasd_devmap_lock);
-        devmap->uid = *uid;
-        spin_unlock(&dasd_devmap_lock);
-
-        return 0;
-}
-EXPORT_SYMBOL_GPL(dasd_set_uid);
-
-/*
  * Return value of the specified feature.
  */
 int
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 0cb233116855..5b1cd8d6e971 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -692,18 +692,20 @@ dasd_eckd_cdl_reclen(int recid)
 /*
  * Generate device unique id that specifies the physical device.
  */
-static int dasd_eckd_generate_uid(struct dasd_device *device,
-                                  struct dasd_uid *uid)
+static int dasd_eckd_generate_uid(struct dasd_device *device)
 {
         struct dasd_eckd_private *private;
+        struct dasd_uid *uid;
         int count;
+        unsigned long flags;
 
         private = (struct dasd_eckd_private *) device->private;
         if (!private)
                 return -ENODEV;
         if (!private->ned || !private->gneq)
                 return -ENODEV;
-
+        uid = &private->uid;
+        spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
         memset(uid, 0, sizeof(struct dasd_uid));
         memcpy(uid->vendor, private->ned->HDA_manufacturer,
                sizeof(uid->vendor) - 1);
@@ -726,9 +728,25 @@ static int dasd_eckd_generate_uid(struct dasd_device *device,
                                 private->vdsneq->uit[count]);
                 }
         }
+        spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
         return 0;
 }
 
+static int dasd_eckd_get_uid(struct dasd_device *device, struct dasd_uid *uid)
+{
+        struct dasd_eckd_private *private;
+        unsigned long flags;
+
+        if (device->private) {
+                private = (struct dasd_eckd_private *)device->private;
+                spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+                *uid = private->uid;
+                spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+                return 0;
+        }
+        return -EINVAL;
+}
+
 static struct dasd_ccw_req *dasd_eckd_build_rcd_lpm(struct dasd_device *device,
                                                     void *rcd_buffer,
                                                     struct ciw *ciw, __u8 lpm)
@@ -1088,6 +1106,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
 {
         struct dasd_eckd_private *private;
         struct dasd_block *block;
+        struct dasd_uid temp_uid;
         int is_known, rc;
         int readonly;
 
@@ -1124,13 +1143,13 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
         if (rc)
                 goto out_err1;
 
-        /* Generate device unique id and register in devmap */
-        rc = dasd_eckd_generate_uid(device, &private->uid);
+        /* Generate device unique id */
+        rc = dasd_eckd_generate_uid(device);
         if (rc)
                 goto out_err1;
-        dasd_set_uid(device->cdev, &private->uid);
 
-        if (private->uid.type == UA_BASE_DEVICE) {
+        dasd_eckd_get_uid(device, &temp_uid);
+        if (temp_uid.type == UA_BASE_DEVICE) {
                 block = dasd_alloc_block();
                 if (IS_ERR(block)) {
                         DBF_EVENT_DEVID(DBF_WARNING, device->cdev, "%s",
@@ -1451,6 +1470,7 @@ static int dasd_eckd_ready_to_online(struct dasd_device *device)
 
 static int dasd_eckd_online_to_ready(struct dasd_device *device)
 {
+        cancel_work_sync(&device->reload_device);
         return dasd_alias_remove_device(device);
 };
 
@@ -1709,10 +1729,27 @@ static void dasd_eckd_handle_unsolicited_interrupt(struct dasd_device *device,
 {
         char mask;
         char *sense = NULL;
+        struct dasd_eckd_private *private;
 
+        private = (struct dasd_eckd_private *) device->private;
         /* first of all check for state change pending interrupt */
         mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP;
         if ((scsw_dstat(&irb->scsw) & mask) == mask) {
+                /* for alias only and not in offline processing*/
+                if (!device->block && private->lcu &&
+                    !test_bit(DASD_FLAG_OFFLINE, &device->flags)) {
+                        /*
+                         * the state change could be caused by an alias
+                         * reassignment remove device from alias handling
+                         * to prevent new requests from being scheduled on
+                         * the wrong alias device
+                         */
+                        dasd_alias_remove_device(device);
+
+                        /* schedule worker to reload device */
+                        dasd_reload_device(device);
+                }
+
                 dasd_generic_handle_state_change(device);
                 return;
         }
@@ -3259,7 +3296,7 @@ static void dasd_eckd_dump_sense(struct dasd_device *device,
                 dasd_eckd_dump_sense_ccw(device, req, irb);
 }
 
-int dasd_eckd_pm_freeze(struct dasd_device *device)
+static int dasd_eckd_pm_freeze(struct dasd_device *device)
 {
         /*
          * the device should be disconnected from our LCU structure
@@ -3272,7 +3309,7 @@ int dasd_eckd_pm_freeze(struct dasd_device *device)
         return 0;
 }
 
-int dasd_eckd_restore_device(struct dasd_device *device)
+static int dasd_eckd_restore_device(struct dasd_device *device)
 {
         struct dasd_eckd_private *private;
         struct dasd_eckd_characteristics temp_rdc_data;
@@ -3287,15 +3324,16 @@ int dasd_eckd_restore_device(struct dasd_device *device)
         if (rc)
                 goto out_err;
 
-        /* Generate device unique id and register in devmap */
-        rc = dasd_eckd_generate_uid(device, &private->uid);
-        dasd_get_uid(device->cdev, &temp_uid);
+        dasd_eckd_get_uid(device, &temp_uid);
+        /* Generate device unique id */
+        rc = dasd_eckd_generate_uid(device);
+        spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
         if (memcmp(&private->uid, &temp_uid, sizeof(struct dasd_uid)) != 0)
                 dev_err(&device->cdev->dev, "The UID of the DASD has "
                         "changed\n");
+        spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
         if (rc)
                 goto out_err;
-        dasd_set_uid(device->cdev, &private->uid);
 
         /* register lcu with alias handling, enable PAV if this is a new lcu */
         is_known = dasd_alias_make_device_known_to_lcu(device);
@@ -3336,6 +3374,56 @@ out_err:
         return -1;
 }
 
+static int dasd_eckd_reload_device(struct dasd_device *device)
+{
+        struct dasd_eckd_private *private;
+        int rc, old_base;
+        char print_uid[60];
+        struct dasd_uid uid;
+        unsigned long flags;
+
+        private = (struct dasd_eckd_private *) device->private;
+
+        spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+        old_base = private->uid.base_unit_addr;
+        spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+
+        /* Read Configuration Data */
+        rc = dasd_eckd_read_conf(device);
+        if (rc)
+                goto out_err;
+
+        rc = dasd_eckd_generate_uid(device);
+        if (rc)
+                goto out_err;
+        /*
+         * update unit address configuration and
+         * add device to alias management
+         */
+        dasd_alias_update_add_device(device);
+
+        dasd_eckd_get_uid(device, &uid);
+
+        if (old_base != uid.base_unit_addr) {
+                if (strlen(uid.vduit) > 0)
+                        snprintf(print_uid, sizeof(print_uid),
+                                 "%s.%s.%04x.%02x.%s", uid.vendor, uid.serial,
+                                 uid.ssid, uid.base_unit_addr, uid.vduit);
+                else
+                        snprintf(print_uid, sizeof(print_uid),
+                                 "%s.%s.%04x.%02x", uid.vendor, uid.serial,
+                                 uid.ssid, uid.base_unit_addr);
+
+                dev_info(&device->cdev->dev,
+                         "An Alias device was reassigned to a new base device "
+                         "with UID: %s\n", print_uid);
+        }
+        return 0;
+
+out_err:
+        return -1;
+}
+
 static struct ccw_driver dasd_eckd_driver = {
         .name        = "dasd-eckd",
         .owner       = THIS_MODULE,
@@ -3389,6 +3477,8 @@ static struct dasd_discipline dasd_eckd_discipline = {
         .ioctl = dasd_eckd_ioctl,
         .freeze = dasd_eckd_pm_freeze,
         .restore = dasd_eckd_restore_device,
+        .reload = dasd_eckd_reload_device,
+        .get_uid = dasd_eckd_get_uid,
 };
 
 static int __init
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index 864d53c04201..dd6385a5af14 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -426,7 +426,6 @@ struct alias_pav_group {
         struct dasd_device *next;
 };
 
-
 struct dasd_eckd_private {
         struct dasd_eckd_characteristics rdc_data;
         u8 *conf_data;
@@ -463,4 +462,5 @@ void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *);
 void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
 void dasd_alias_lcu_setup_complete(struct dasd_device *);
 void dasd_alias_wait_for_lcu_setup(struct dasd_device *);
+int dasd_alias_update_add_device(struct dasd_device *);
 #endif                          /* DASD_ECKD_H */
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index a91d4a97d4f2..32fac186ba3f 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -81,6 +81,10 @@ struct dasd_block;
 #define DASD_SIM_MSG_TO_OP 0x03
 #define DASD_SIM_LOG 0x0C
 
+/* lock class for nested cdev lock */
+#define CDEV_NESTED_FIRST 1
+#define CDEV_NESTED_SECOND 2
+
 /*
  * SECTION: MACROs for klogd and s390 debug feature (dbf)
  */
@@ -229,6 +233,24 @@ struct dasd_ccw_req {
 typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *);
 
 /*
+ * Unique identifier for dasd device.
+ */
+#define UA_NOT_CONFIGURED  0x00
+#define UA_BASE_DEVICE     0x01
+#define UA_BASE_PAV_ALIAS  0x02
+#define UA_HYPER_PAV_ALIAS 0x03
+
+struct dasd_uid {
+        __u8 type;
+        char vendor[4];
+        char serial[15];
+        __u16 ssid;
+        __u8 real_unit_addr;
+        __u8 base_unit_addr;
+        char vduit[33];
+};
+
+/*
  * the struct dasd_discipline is
  * sth like a table of virtual functions, if you think of dasd_eckd
  * inheriting dasd...
@@ -312,28 +334,15 @@ struct dasd_discipline {
         /* suspend/resume functions */
         int (*freeze) (struct dasd_device *);
         int (*restore) (struct dasd_device *);
-};
 
-extern struct dasd_discipline *dasd_diag_discipline_pointer;
-
-/*
- * Unique identifier for dasd device.
- */
-#define UA_NOT_CONFIGURED  0x00
-#define UA_BASE_DEVICE     0x01
-#define UA_BASE_PAV_ALIAS  0x02
-#define UA_HYPER_PAV_ALIAS 0x03
+        /* reload device after state change */
+        int (*reload) (struct dasd_device *);
 
-struct dasd_uid {
-        __u8 type;
-        char vendor[4];
-        char serial[15];
-        __u16 ssid;
-        __u8 real_unit_addr;
-        __u8 base_unit_addr;
-        char vduit[33];
+        int (*get_uid) (struct dasd_device *, struct dasd_uid *);
 };
 
+extern struct dasd_discipline *dasd_diag_discipline_pointer;
+
 /*
  * Notification numbers for extended error reporting notifications:
  * The DASD_EER_DISABLE notification is sent before a dasd_device (and it's
@@ -386,6 +395,7 @@ struct dasd_device {
         struct tasklet_struct tasklet;
         struct work_struct kick_work;
         struct work_struct restore_device;
+        struct work_struct reload_device;
         struct timer_list timer;
 
         debug_info_t *debug_area;
@@ -582,6 +592,7 @@ void dasd_enable_device(struct dasd_device *);
 void dasd_set_target_state(struct dasd_device *, int);
 void dasd_kick_device(struct dasd_device *);
 void dasd_restore_device(struct dasd_device *);
+void dasd_reload_device(struct dasd_device *);
 
 void dasd_add_request_head(struct dasd_ccw_req *);
 void dasd_add_request_tail(struct dasd_ccw_req *);
@@ -629,8 +640,6 @@ void dasd_devmap_exit(void);
 struct dasd_device *dasd_create_device(struct ccw_device *);
 void dasd_delete_device(struct dasd_device *);
 
-int dasd_get_uid(struct ccw_device *, struct dasd_uid *);
-int dasd_set_uid(struct ccw_device *, struct dasd_uid *);
 int dasd_get_feature(struct ccw_device *, int);
 int dasd_set_feature(struct ccw_device *, int, int);
 
diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig
index 4e34d3686c23..40834f18754c 100644
--- a/drivers/s390/char/Kconfig
+++ b/drivers/s390/char/Kconfig
@@ -148,13 +148,12 @@ config VMLOGRDR
           This driver depends on the IUCV support driver.
 
 config VMCP
-        tristate "Support for the z/VM CP interface (VM only)"
+        bool "Support for the z/VM CP interface"
         depends on S390
         help
           Select this option if you want to be able to interact with the control
           program on z/VM
 
-
 config MONREADER
         tristate "API for reading z/VM monitor service records"
         depends on IUCV
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index 0eabcca3c92d..857dfcb7b359 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -484,6 +484,7 @@ fs3270_open(struct inode *inode, struct file *filp)
                 raw3270_del_view(&fp->view);
                 goto out;
         }
+        nonseekable_open(inode, filp);
         filp->private_data = fp;
 out:
         mutex_unlock(&fs3270_mutex);
diff --git a/drivers/s390/char/keyboard.c b/drivers/s390/char/keyboard.c
index cb6bffe7141a..18d9a497863b 100644
--- a/drivers/s390/char/keyboard.c
+++ b/drivers/s390/char/keyboard.c
@@ -49,7 +49,7 @@ static unsigned char ret_diacr[NR_DEAD] = {
 struct kbd_data *
 kbd_alloc(void) {
         struct kbd_data *kbd;
-        int i, len;
+        int i;
 
         kbd = kzalloc(sizeof(struct kbd_data), GFP_KERNEL);
         if (!kbd)
@@ -59,12 +59,11 @@ kbd_alloc(void) {
                 goto out_kbd;
         for (i = 0; i < ARRAY_SIZE(key_maps); i++) {
                 if (key_maps[i]) {
-                        kbd->key_maps[i] =
-                                kmalloc(sizeof(u_short)*NR_KEYS, GFP_KERNEL);
+                        kbd->key_maps[i] = kmemdup(key_maps[i],
+                                                   sizeof(u_short) * NR_KEYS,
+                                                   GFP_KERNEL);
                         if (!kbd->key_maps[i])
                                 goto out_maps;
-                        memcpy(kbd->key_maps[i], key_maps[i],
-                               sizeof(u_short)*NR_KEYS);
                 }
         }
         kbd->func_table = kzalloc(sizeof(func_table), GFP_KERNEL);
@@ -72,23 +71,21 @@ kbd_alloc(void) {
                 goto out_maps;
         for (i = 0; i < ARRAY_SIZE(func_table); i++) {
                 if (func_table[i]) {
-                        len = strlen(func_table[i]) + 1;
-                        kbd->func_table[i] = kmalloc(len, GFP_KERNEL);
+                        kbd->func_table[i] = kstrdup(func_table[i],
+                                                     GFP_KERNEL);
                         if (!kbd->func_table[i])
                                 goto out_func;
-                        memcpy(kbd->func_table[i], func_table[i], len);
                 }
         }
         kbd->fn_handler =
                 kzalloc(sizeof(fn_handler_fn *) * NR_FN_HANDLER, GFP_KERNEL);
         if (!kbd->fn_handler)
                 goto out_func;
-        kbd->accent_table =
-                kmalloc(sizeof(struct kbdiacruc)*MAX_DIACR, GFP_KERNEL);
+        kbd->accent_table = kmemdup(accent_table,
+                                    sizeof(struct kbdiacruc) * MAX_DIACR,
+                                    GFP_KERNEL);
         if (!kbd->accent_table)
                 goto out_fn_handler;
-        memcpy(kbd->accent_table, accent_table,
-               sizeof(struct kbdiacruc)*MAX_DIACR);
         kbd->accent_table_size = accent_table_size;
         return kbd;
 
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c
index 5bb59d36a6d4..04e532eec032 100644
--- a/drivers/s390/char/vmcp.c
+++ b/drivers/s390/char/vmcp.c
@@ -1,24 +1,20 @@
 /*
- * Copyright IBM Corp. 2004,2007
+ * Copyright IBM Corp. 2004,2010
  * Interface implementation for communication with the z/VM control program
- * Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
  *
+ * Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
  *
  * z/VMs CP offers the possibility to issue commands via the diagnose code 8
  * this driver implements a character device that issues these commands and
  * returns the answer of CP.
-
+ *
  * The idea of this driver is based on cpint from Neale Ferguson and #CP in CMS
  */
 
-#define KMSG_COMPONENT "vmcp"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
 #include <linux/fs.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/miscdevice.h>
-#include <linux/module.h>
 #include <linux/slab.h>
 #include <asm/compat.h>
 #include <asm/cpcmd.h>
@@ -26,10 +22,6 @@
 #include <asm/uaccess.h>
 #include "vmcp.h"
 
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Christian Borntraeger <borntraeger@de.ibm.com>");
-MODULE_DESCRIPTION("z/VM CP interface");
-
 static debug_info_t *vmcp_debug;
 
 static int vmcp_open(struct inode *inode, struct file *file)
@@ -197,11 +189,8 @@ static int __init vmcp_init(void)
 {
         int ret;
 
-        if (!MACHINE_IS_VM) {
-                pr_warning("The z/VM CP interface device driver cannot be "
-                           "loaded without z/VM\n");
-                return -ENODEV;
-        }
+        if (!MACHINE_IS_VM)
+                return 0;
 
         vmcp_debug = debug_register("vmcp", 1, 1, 240);
         if (!vmcp_debug)
@@ -214,19 +203,8 @@ static int __init vmcp_init(void)
         }
 
         ret = misc_register(&vmcp_dev);
-        if (ret) {
+        if (ret)
                 debug_unregister(vmcp_debug);
-                return ret;
-        }
-
-        return 0;
-}
-
-static void __exit vmcp_exit(void)
-{
-        misc_deregister(&vmcp_dev);
-        debug_unregister(vmcp_debug);
+        return ret;
 }
-
-module_init(vmcp_init);
-module_exit(vmcp_exit);
+device_initcall(vmcp_init);
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 7217966f7d31..f5ea3384a4b9 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -445,7 +445,7 @@ static int zcore_memmap_open(struct inode *inode, struct file *filp)
         }
         kfree(chunk_array);
         filp->private_data = buf;
-        return 0;
+        return nonseekable_open(inode, filp);
 }
 
 static int zcore_memmap_release(struct inode *inode, struct file *filp)
@@ -473,7 +473,7 @@ static ssize_t zcore_reipl_write(struct file *filp, const char __user *buf,
 
 static int zcore_reipl_open(struct inode *inode, struct file *filp)
 {
-        return 0;
+        return nonseekable_open(inode, filp);
 }
 
 static int zcore_reipl_release(struct inode *inode, struct file *filp)
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 3b6f4adc5094..a83877c664a6 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -803,6 +803,7 @@ static long chsc_ioctl(struct file *filp, unsigned int cmd,
 
 static const struct file_operations chsc_fops = {
         .owner = THIS_MODULE,
+        .open = nonseekable_open,
         .unlocked_ioctl = chsc_ioctl,
         .compat_ioctl = chsc_ioctl,
 };
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 5feea1a371e1..f4e6cf3aceb8 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -616,7 +616,8 @@ void __irq_entry do_IRQ(struct pt_regs *regs)
         struct pt_regs *old_regs;
 
         old_regs = set_irq_regs(regs);
-        s390_idle_check();
+        s390_idle_check(regs, S390_lowcore.int_clock,
+                        S390_lowcore.async_enter_timer);
         irq_enter();
         __get_cpu_var(s390_idle).nohz_delay = 1;
         if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator)
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 511649115bd7..ac94ac751459 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -648,6 +648,8 @@ static void css_process_crw(struct crw *crw0, struct crw *crw1, int overflow)
 static void __init
 css_generate_pgid(struct channel_subsystem *css, u32 tod_high)
 {
+        struct cpuid cpu_id;
+
         if (css_general_characteristics.mcss) {
                 css->global_pgid.pgid_high.ext_cssid.version = 0x80;
                 css->global_pgid.pgid_high.ext_cssid.cssid = css->cssid;
@@ -658,8 +660,9 @@ css_generate_pgid(struct channel_subsystem *css, u32 tod_high)
                 css->global_pgid.pgid_high.cpu_addr = 0;
 #endif
         }
-        css->global_pgid.cpu_id = S390_lowcore.cpu_id.ident;
-        css->global_pgid.cpu_model = S390_lowcore.cpu_id.machine;
+        get_cpu_id(&cpu_id);
+        css->global_pgid.cpu_id = cpu_id.ident;
+        css->global_pgid.cpu_model = cpu_id.machine;
         css->global_pgid.tod_high = tod_high;
 
 }
@@ -1062,6 +1065,7 @@ static ssize_t cio_settle_write(struct file *file, const char __user *buf,
 }
 
 static const struct file_operations cio_settle_proc_fops = {
+        .open = nonseekable_open,
         .write = cio_settle_write,
 };
 
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 48aa0647432b..f0037eefd44e 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -13,8 +13,8 @@
 #include <asm/debug.h>
 #include "chsc.h"
 
-#define QDIO_BUSY_BIT_PATIENCE          100     /* 100 microseconds */
-#define QDIO_INPUT_THRESHOLD            500     /* 500 microseconds */
+#define QDIO_BUSY_BIT_PATIENCE          (100 << 12)     /* 100 microseconds */
+#define QDIO_INPUT_THRESHOLD            (500 << 12)     /* 500 microseconds */
 
 /*
  * if an asynchronous HiperSockets queue runs full, the 10 seconds timer wait
@@ -296,10 +296,8 @@ struct qdio_q {
         struct qdio_irq *irq_ptr;
         struct sl *sl;
         /*
-         * Warning: Leave this member at the end so it won't be cleared in
-         * qdio_fill_qs. A page is allocated under this pointer and used for
-         * slib and sl. slib is 2048 bytes big and sl points to offset
-         * PAGE_SIZE / 2.
+         * A page is allocated under this pointer and used for slib and sl.
+         * slib is 2048 bytes big and sl points to offset PAGE_SIZE / 2.
          */
         struct slib *slib;
 } __attribute__ ((aligned(256)));
@@ -372,11 +370,6 @@ static inline int multicast_outbound(struct qdio_q *q)
                (q->nr == q->irq_ptr->nr_output_qs - 1);
 }
 
-static inline unsigned long long get_usecs(void)
-{
-        return monotonic_clock() >> 12;
-}
-
 #define pci_out_supported(q) \
         (q->irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)
 #define is_qebsm(q)                     (q->irq_ptr->sch_token != 0)
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 88be7b9ea6e1..00520f9a7a8e 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -336,10 +336,10 @@ again:
                 WARN_ON(queue_type(q) != QDIO_IQDIO_QFMT || cc != 2);
 
                 if (!start_time) {
-                        start_time = get_usecs();
+                        start_time = get_clock();
                         goto again;
                 }
-                if ((get_usecs() - start_time) < QDIO_BUSY_BIT_PATIENCE)
+                if ((get_clock() - start_time) < QDIO_BUSY_BIT_PATIENCE)
                         goto again;
         }
         return cc;
@@ -536,7 +536,7 @@ static int qdio_inbound_q_moved(struct qdio_q *q)
         if ((bufnr != q->last_move) || q->qdio_error) {
                 q->last_move = bufnr;
                 if (!is_thinint_irq(q->irq_ptr) && MACHINE_IS_LPAR)
-                        q->u.in.timestamp = get_usecs();
+                        q->u.in.timestamp = get_clock();
                 return 1;
         } else
                 return 0;
@@ -567,7 +567,7 @@ static inline int qdio_inbound_q_done(struct qdio_q *q)
          * At this point we know, that inbound first_to_check
          * has (probably) not moved (see qdio_inbound_processing).
          */
-        if (get_usecs() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) {
+        if (get_clock() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) {
                 DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%02x",
                               q->first_to_check);
                 return 1;
@@ -606,7 +606,7 @@ static void qdio_kick_handler(struct qdio_q *q)
 static void __qdio_inbound_processing(struct qdio_q *q)
 {
         qperf_inc(q, tasklet_inbound);
-again:
+
         if (!qdio_inbound_q_moved(q))
                 return;
 
@@ -615,7 +615,10 @@ again:
         if (!qdio_inbound_q_done(q)) {
                 /* means poll time is not yet over */
                 qperf_inc(q, tasklet_inbound_resched);
-                goto again;
+                if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) {
+                        tasklet_schedule(&q->tasklet);
+                        return;
+                }
         }
 
         qdio_stop_polling(q);
@@ -625,7 +628,8 @@ again:
          */
         if (!qdio_inbound_q_done(q)) {
                 qperf_inc(q, tasklet_inbound_resched2);
-                goto again;
+                if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED))
+                        tasklet_schedule(&q->tasklet);
         }
 }
 
@@ -955,6 +959,9 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
                 return;
         }
 
+        if (irq_ptr->perf_stat_enabled)
+                irq_ptr->perf_stat.qdio_int++;
+
         if (IS_ERR(irb)) {
                 switch (PTR_ERR(irb)) {
                 case -EIO:
@@ -1016,30 +1023,6 @@ int qdio_get_ssqd_desc(struct ccw_device *cdev,
 }
 EXPORT_SYMBOL_GPL(qdio_get_ssqd_desc);
 
-/**
- * qdio_cleanup - shutdown queues and free data structures
- * @cdev: associated ccw device
- * @how: use halt or clear to shutdown
- *
- * This function calls qdio_shutdown() for @cdev with method @how.
- * and qdio_free(). The qdio_free() return value is ignored since
- * !irq_ptr is already checked.
- */
-int qdio_cleanup(struct ccw_device *cdev, int how)
-{
-        struct qdio_irq *irq_ptr = cdev->private->qdio_data;
-        int rc;
-
-        if (!irq_ptr)
-                return -ENODEV;
-
-        rc = qdio_shutdown(cdev, how);
-
-        qdio_free(cdev);
-        return rc;
-}
-EXPORT_SYMBOL_GPL(qdio_cleanup);
-
 static void qdio_shutdown_queues(struct ccw_device *cdev)
 {
         struct qdio_irq *irq_ptr = cdev->private->qdio_data;
@@ -1157,28 +1140,6 @@ int qdio_free(struct ccw_device *cdev)
 EXPORT_SYMBOL_GPL(qdio_free);
 
 /**
- * qdio_initialize - allocate and establish queues for a qdio subchannel
- * @init_data: initialization data
- *
- * This function first allocates queues via qdio_allocate() and on success
- * establishes them via qdio_establish().
- */
-int qdio_initialize(struct qdio_initialize *init_data)
-{
-        int rc;
-
-        rc = qdio_allocate(init_data);
-        if (rc)
-                return rc;
-
-        rc = qdio_establish(init_data);
-        if (rc)
-                qdio_free(init_data->cdev);
-        return rc;
-}
-EXPORT_SYMBOL_GPL(qdio_initialize);
-
-/**
  * qdio_allocate - allocate qdio queues and associated data
  * @init_data: initialization data
  */
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 7f4a75465140..6326b67c45d2 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -106,10 +106,12 @@ int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs
 static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr,
                               qdio_handler_t *handler, int i)
 {
-        /* must be cleared by every qdio_establish */
-        memset(q, 0, ((char *)&q->slib) - ((char *)q));
-        memset(q->slib, 0, PAGE_SIZE);
+        struct slib *slib = q->slib;
 
+        /* queue must be cleared for qdio_establish */
+        memset(q, 0, sizeof(*q));
+        memset(slib, 0, PAGE_SIZE);
+        q->slib = slib;
         q->irq_ptr = irq_ptr;
         q->mask = 1 << (31 - i);
         q->nr = i;
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index ce5f8910ff83..8daf1b99f153 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -95,7 +95,7 @@ void tiqdio_add_input_queues(struct qdio_irq *irq_ptr)
         for_each_input_queue(irq_ptr, q, i)
                 list_add_rcu(&q->entry, &tiq_list);
         mutex_unlock(&tiq_list_lock);
-        xchg(irq_ptr->dsci, 1);
+        xchg(irq_ptr->dsci, 1 << 7);
 }
 
 void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr)
@@ -173,7 +173,7 @@ static void tiqdio_thinint_handler(void *ind, void *drv_data)
 
                 /* prevent racing */
                 if (*tiqdio_alsi)
-                        xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 1);
+                        xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 1 << 7);
         }
 }
 
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index 304caf549973..41e0aaefafd5 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -302,7 +302,7 @@ static ssize_t zcrypt_write(struct file *filp, const char __user *buf,
 static int zcrypt_open(struct inode *inode, struct file *filp)
 {
         atomic_inc(&zcrypt_open_count);
-        return 0;
+        return nonseekable_open(inode, filp);
 }
 
 /**
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 3ba738b2e271..28f71349fdec 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -1292,13 +1292,14 @@ int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
                 QETH_QDIO_CLEANING)) {
         case QETH_QDIO_ESTABLISHED:
                 if (card->info.type == QETH_CARD_TYPE_IQD)
-                        rc = qdio_cleanup(CARD_DDEV(card),
+                        rc = qdio_shutdown(CARD_DDEV(card),
                                 QDIO_FLAG_CLEANUP_USING_HALT);
                 else
-                        rc = qdio_cleanup(CARD_DDEV(card),
+                        rc = qdio_shutdown(CARD_DDEV(card),
                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
                 if (rc)
                         QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
+                qdio_free(CARD_DDEV(card));
                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
                 break;
         case QETH_QDIO_CLEANING:
@@ -3810,10 +3811,18 @@ static int qeth_qdio_establish(struct qeth_card *card)
 
         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
-                rc = qdio_initialize(&init_data);
-                if (rc)
+                rc = qdio_allocate(&init_data);
+                if (rc) {
+                        atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
+                        goto out;
+                }
+                rc = qdio_establish(&init_data);
+                if (rc) {
                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
+                        qdio_free(CARD_DDEV(card));
+                }
         }
+out:
         kfree(out_sbal_ptrs);
         kfree(in_sbal_ptrs);
         kfree(qib_param_field);
diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c
index 25d9e0ae9c57..1a2db0a35737 100644
--- a/drivers/s390/scsi/zfcp_cfdc.c
+++ b/drivers/s390/scsi/zfcp_cfdc.c
@@ -254,6 +254,7 @@ static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
 }
 
 static const struct file_operations zfcp_cfdc_fops = {
+        .open = nonseekable_open,
         .unlocked_ioctl = zfcp_cfdc_dev_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl = zfcp_cfdc_dev_ioctl