Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (60 commits)
  uio: make uio_info's name and version const
  UIO: Documentation for UIO ioport info handling
  UIO: Pass information about ioports to userspace (V2)
  UIO: uio_pdrv_genirq: allow custom irq_flags
  UIO: use pci_ioremap_bar() in drivers/uio
  arm: struct device - replace bus_id with dev_name(), dev_set_name()
  libata: struct device - replace bus_id with dev_name(), dev_set_name()
  avr: struct device - replace bus_id with dev_name(), dev_set_name()
  block: struct device - replace bus_id with dev_name(), dev_set_name()
  chris: struct device - replace bus_id with dev_name(), dev_set_name()
  dmi: struct device - replace bus_id with dev_name(), dev_set_name()
  gadget: struct device - replace bus_id with dev_name(), dev_set_name()
  gpio: struct device - replace bus_id with dev_name(), dev_set_name()
  gpu: struct device - replace bus_id with dev_name(), dev_set_name()
  hwmon: struct device - replace bus_id with dev_name(), dev_set_name()
  i2o: struct device - replace bus_id with dev_name(), dev_set_name()
  IA64: struct device - replace bus_id with dev_name(), dev_set_name()
  i7300_idle: struct device - replace bus_id with dev_name(), dev_set_name()
  infiniband: struct device - replace bus_id with dev_name(), dev_set_name()
  ISDN: struct device - replace bus_id with dev_name(), dev_set_name()
  ...

92 files changed, 733 insertions, 496 deletions

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 4040d8b53216..9e92107691f2 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3369,7 +3369,7 @@ static void ata_scsi_remove_dev(struct ata_device *dev)
 
         if (sdev) {
                 ata_dev_printk(dev, KERN_INFO, "detaching (SCSI %s)\n",
-                               sdev->sdev_gendev.bus_id);
+                               dev_name(&sdev->sdev_gendev));
 
                 scsi_remove_device(sdev);
                 scsi_device_put(sdev);
diff --git a/drivers/base/attribute_container.c b/drivers/base/attribute_container.c
index f57652db0a2a..b9cda053d3c0 100644
--- a/drivers/base/attribute_container.c
+++ b/drivers/base/attribute_container.c
@@ -167,7 +167,7 @@ attribute_container_add_device(struct device *dev,
                 ic->classdev.parent = get_device(dev);
                 ic->classdev.class = cont->class;
                 cont->class->dev_release = attribute_container_release;
-                strcpy(ic->classdev.bus_id, dev->bus_id);
+                dev_set_name(&ic->classdev, dev_name(dev));
                 if (fn)
                         fn(cont, dev, &ic->classdev);
                 else
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 0a5f055dffba..b676f8f801f8 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -63,6 +63,32 @@ struct class_private {
 #define to_class(obj)   \
         container_of(obj, struct class_private, class_subsys.kobj)
 
+/**
+ * struct device_private - structure to hold the private to the driver core portions of the device structure.
+ *
+ * @klist_children - klist containing all children of this device
+ * @knode_parent - node in sibling list
+ * @knode_driver - node in driver list
+ * @knode_bus - node in bus list
+ * @device - pointer back to the struct class that this structure is
+ * associated with.
+ *
+ * Nothing outside of the driver core should ever touch these fields.
+ */
+struct device_private {
+        struct klist klist_children;
+        struct klist_node knode_parent;
+        struct klist_node knode_driver;
+        struct klist_node knode_bus;
+        struct device *device;
+};
+#define to_device_private_parent(obj)   \
+        container_of(obj, struct device_private, knode_parent)
+#define to_device_private_driver(obj)   \
+        container_of(obj, struct device_private, knode_driver)
+#define to_device_private_bus(obj)      \
+        container_of(obj, struct device_private, knode_bus)
+
 /* initialisation functions */
 extern int devices_init(void);
 extern int buses_init(void);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 5aee1c0169ea..0f0a50444672 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -253,7 +253,14 @@ static ssize_t store_drivers_probe(struct bus_type *bus,
 static struct device *next_device(struct klist_iter *i)
 {
         struct klist_node *n = klist_next(i);
-        return n ? container_of(n, struct device, knode_bus) : NULL;
+        struct device *dev = NULL;
+        struct device_private *dev_prv;
+
+        if (n) {
+                dev_prv = to_device_private_bus(n);
+                dev = dev_prv->device;
+        }
+        return dev;
 }
 
 /**
@@ -286,7 +293,7 @@ int bus_for_each_dev(struct bus_type *bus, struct device *start,
                 return -EINVAL;
 
         klist_iter_init_node(&bus->p->klist_devices, &i,
-                             (start ? &start->knode_bus : NULL));
+                             (start ? &start->p->knode_bus : NULL));
         while ((dev = next_device(&i)) && !error)
                 error = fn(dev, data);
         klist_iter_exit(&i);
@@ -320,7 +327,7 @@ struct device *bus_find_device(struct bus_type *bus,
                 return NULL;
 
         klist_iter_init_node(&bus->p->klist_devices, &i,
-                             (start ? &start->knode_bus : NULL));
+                             (start ? &start->p->knode_bus : NULL));
         while ((dev = next_device(&i)))
                 if (match(dev, data) && get_device(dev))
                         break;
@@ -333,7 +340,7 @@ static int match_name(struct device *dev, void *data)
 {
         const char *name = data;
 
-        return sysfs_streq(name, dev->bus_id);
+        return sysfs_streq(name, dev_name(dev));
 }
 
 /**
@@ -461,12 +468,12 @@ int bus_add_device(struct device *dev)
         int error = 0;
 
         if (bus) {
-                pr_debug("bus: '%s': add device %s\n", bus->name, dev->bus_id);
+                pr_debug("bus: '%s': add device %s\n", bus->name, dev_name(dev));
                 error = device_add_attrs(bus, dev);
                 if (error)
                         goto out_put;
                 error = sysfs_create_link(&bus->p->devices_kset->kobj,
-                                                &dev->kobj, dev->bus_id);
+                                                &dev->kobj, dev_name(dev));
                 if (error)
                         goto out_id;
                 error = sysfs_create_link(&dev->kobj,
@@ -482,7 +489,7 @@ int bus_add_device(struct device *dev)
 out_deprecated:
         sysfs_remove_link(&dev->kobj, "subsystem");
 out_subsys:
-        sysfs_remove_link(&bus->p->devices_kset->kobj, dev->bus_id);
+        sysfs_remove_link(&bus->p->devices_kset->kobj, dev_name(dev));
 out_id:
         device_remove_attrs(bus, dev);
 out_put:
@@ -507,7 +514,8 @@ void bus_attach_device(struct device *dev)
                         ret = device_attach(dev);
                 WARN_ON(ret < 0);
                 if (ret >= 0)
-                        klist_add_tail(&dev->knode_bus, &bus->p->klist_devices);
+                        klist_add_tail(&dev->p->knode_bus,
+                                       &bus->p->klist_devices);
         }
 }
 
@@ -526,13 +534,13 @@ void bus_remove_device(struct device *dev)
                 sysfs_remove_link(&dev->kobj, "subsystem");
                 remove_deprecated_bus_links(dev);
                 sysfs_remove_link(&dev->bus->p->devices_kset->kobj,
-                                  dev->bus_id);
+                                  dev_name(dev));
                 device_remove_attrs(dev->bus, dev);
-                if (klist_node_attached(&dev->knode_bus))
-                        klist_del(&dev->knode_bus);
+                if (klist_node_attached(&dev->p->knode_bus))
+                        klist_del(&dev->p->knode_bus);
 
                 pr_debug("bus: '%s': remove device %s\n",
-                         dev->bus->name, dev->bus_id);
+                         dev->bus->name, dev_name(dev));
                 device_release_driver(dev);
                 bus_put(dev->bus);
         }
@@ -831,14 +839,16 @@ static void bus_remove_attrs(struct bus_type *bus)
 
 static void klist_devices_get(struct klist_node *n)
 {
-        struct device *dev = container_of(n, struct device, knode_bus);
+        struct device_private *dev_prv = to_device_private_bus(n);
+        struct device *dev = dev_prv->device;
 
         get_device(dev);
 }
 
 static void klist_devices_put(struct klist_node *n)
 {
-        struct device *dev = container_of(n, struct device, knode_bus);
+        struct device_private *dev_prv = to_device_private_bus(n);
+        struct device *dev = dev_prv->device;
 
         put_device(dev);
 }
@@ -993,18 +1003,20 @@ static void device_insertion_sort_klist(struct device *a, struct list_head *list
 {
         struct list_head *pos;
         struct klist_node *n;
+        struct device_private *dev_prv;
         struct device *b;
 
         list_for_each(pos, list) {
                 n = container_of(pos, struct klist_node, n_node);
-                b = container_of(n, struct device, knode_bus);
+                dev_prv = to_device_private_bus(n);
+                b = dev_prv->device;
                 if (compare(a, b) <= 0) {
-                        list_move_tail(&a->knode_bus.n_node,
-                                       &b->knode_bus.n_node);
+                        list_move_tail(&a->p->knode_bus.n_node,
+                                       &b->p->knode_bus.n_node);
                         return;
                 }
         }
-        list_move_tail(&a->knode_bus.n_node, list);
+        list_move_tail(&a->p->knode_bus.n_node, list);
 }
 
 void bus_sort_breadthfirst(struct bus_type *bus,
@@ -1014,6 +1026,7 @@ void bus_sort_breadthfirst(struct bus_type *bus,
         LIST_HEAD(sorted_devices);
         struct list_head *pos, *tmp;
         struct klist_node *n;
+        struct device_private *dev_prv;
         struct device *dev;
         struct klist *device_klist;
 
@@ -1022,7 +1035,8 @@ void bus_sort_breadthfirst(struct bus_type *bus,
         spin_lock(&device_klist->k_lock);
         list_for_each_safe(pos, tmp, &device_klist->k_list) {
                 n = container_of(pos, struct klist_node, n_node);
-                dev = container_of(n, struct device, knode_bus);
+                dev_prv = to_device_private_bus(n);
+                dev = dev_prv->device;
                 device_insertion_sort_klist(dev, &sorted_devices, compare);
         }
         list_splice(&sorted_devices, &device_klist->k_list);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 8c2cc2648f5a..61df508fa62b 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -109,6 +109,7 @@ static struct sysfs_ops dev_sysfs_ops = {
 static void device_release(struct kobject *kobj)
 {
         struct device *dev = to_dev(kobj);
+        struct device_private *p = dev->p;
 
         if (dev->release)
                 dev->release(dev);
@@ -119,7 +120,8 @@ static void device_release(struct kobject *kobj)
         else
                 WARN(1, KERN_ERR "Device '%s' does not have a release() "
                         "function, it is broken and must be fixed.\n",
-                        dev->bus_id);
+                        dev_name(dev));
+        kfree(p);
 }
 
 static struct kobj_type device_ktype = {
@@ -209,7 +211,7 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
                 retval = dev->bus->uevent(dev, env);
                 if (retval)
                         pr_debug("device: '%s': %s: bus uevent() returned %d\n",
-                                 dev->bus_id, __func__, retval);
+                                 dev_name(dev), __func__, retval);
         }
 
         /* have the class specific function add its stuff */
@@ -217,7 +219,7 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
                 retval = dev->class->dev_uevent(dev, env);
                 if (retval)
                         pr_debug("device: '%s': %s: class uevent() "
-                                 "returned %d\n", dev->bus_id,
+                                 "returned %d\n", dev_name(dev),
                                  __func__, retval);
         }
 
@@ -226,7 +228,7 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
                 retval = dev->type->uevent(dev, env);
                 if (retval)
                         pr_debug("device: '%s': %s: dev_type uevent() "
-                                 "returned %d\n", dev->bus_id,
+                                 "returned %d\n", dev_name(dev),
                                  __func__, retval);
         }
 
@@ -507,14 +509,16 @@ EXPORT_SYMBOL_GPL(device_schedule_callback_owner);
 
 static void klist_children_get(struct klist_node *n)
 {
-        struct device *dev = container_of(n, struct device, knode_parent);
+        struct device_private *p = to_device_private_parent(n);
+        struct device *dev = p->device;
 
         get_device(dev);
 }
 
 static void klist_children_put(struct klist_node *n)
 {
-        struct device *dev = container_of(n, struct device, knode_parent);
+        struct device_private *p = to_device_private_parent(n);
+        struct device *dev = p->device;
 
         put_device(dev);
 }
@@ -536,9 +540,15 @@ static void klist_children_put(struct klist_node *n)
  */
 void device_initialize(struct device *dev)
 {
+        dev->p = kzalloc(sizeof(*dev->p), GFP_KERNEL);
+        if (!dev->p) {
+                WARN_ON(1);
+                return;
+        }
+        dev->p->device = dev;
         dev->kobj.kset = devices_kset;
         kobject_init(&dev->kobj, &device_ktype);
-        klist_init(&dev->klist_children, klist_children_get,
+        klist_init(&dev->p->klist_children, klist_children_get,
                    klist_children_put);
         INIT_LIST_HEAD(&dev->dma_pools);
         init_MUTEX(&dev->sem);
@@ -672,7 +682,7 @@ static int device_add_class_symlinks(struct device *dev)
         if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
             device_is_not_partition(dev)) {
                 error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
-                                          &dev->kobj, dev->bus_id);
+                                          &dev->kobj, dev_name(dev));
                 if (error)
                         goto out_subsys;
         }
@@ -712,11 +722,11 @@ out_busid:
         if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
             device_is_not_partition(dev))
                 sysfs_remove_link(&dev->class->p->class_subsys.kobj,
-                                  dev->bus_id);
+                                  dev_name(dev));
 #else
         /* link in the class directory pointing to the device */
         error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
-                                  &dev->kobj, dev->bus_id);
+                                  &dev->kobj, dev_name(dev));
         if (error)
                 goto out_subsys;
 
@@ -729,7 +739,7 @@ out_busid:
         return 0;
 
 out_busid:
-        sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
+        sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
 #endif
 
 out_subsys:
@@ -758,12 +768,12 @@ static void device_remove_class_symlinks(struct device *dev)
         if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
             device_is_not_partition(dev))
                 sysfs_remove_link(&dev->class->p->class_subsys.kobj,
-                                  dev->bus_id);
+                                  dev_name(dev));
 #else
         if (dev->parent && device_is_not_partition(dev))
                 sysfs_remove_link(&dev->kobj, "device");
 
-        sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
+        sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
 #endif
 
         sysfs_remove_link(&dev->kobj, "subsystem");
@@ -866,7 +876,7 @@ int device_add(struct device *dev)
         if (!strlen(dev->bus_id))
                 goto done;
 
-        pr_debug("device: '%s': %s\n", dev->bus_id, __func__);
+        pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
 
         parent = get_device(dev->parent);
         setup_parent(dev, parent);
@@ -876,7 +886,7 @@ int device_add(struct device *dev)
                 set_dev_node(dev, dev_to_node(parent));
 
         /* first, register with generic layer. */
-        error = kobject_add(&dev->kobj, dev->kobj.parent, "%s", dev->bus_id);
+        error = kobject_add(&dev->kobj, dev->kobj.parent, "%s", dev_name(dev));
         if (error)
                 goto Error;
 
@@ -884,11 +894,6 @@ int device_add(struct device *dev)
         if (platform_notify)
                 platform_notify(dev);
 
-        /* notify clients of device entry (new way) */
-        if (dev->bus)
-                blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
-                                             BUS_NOTIFY_ADD_DEVICE, dev);
-
         error = device_create_file(dev, &uevent_attr);
         if (error)
                 goto attrError;
@@ -916,10 +921,19 @@ int device_add(struct device *dev)
         if (error)
                 goto DPMError;
         device_pm_add(dev);
+
+        /* Notify clients of device addition.  This call must come
+         * after dpm_sysf_add() and before kobject_uevent().
+         */
+        if (dev->bus)
+                blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
+                                             BUS_NOTIFY_ADD_DEVICE, dev);
+
         kobject_uevent(&dev->kobj, KOBJ_ADD);
         bus_attach_device(dev);
         if (parent)
-                klist_add_tail(&dev->knode_parent, &parent->klist_children);
+                klist_add_tail(&dev->p->knode_parent,
+                               &parent->p->klist_children);
 
         if (dev->class) {
                 mutex_lock(&dev->class->p->class_mutex);
@@ -940,9 +954,6 @@ done:
  DPMError:
         bus_remove_device(dev);
  BusError:
-        if (dev->bus)
-                blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
-                                             BUS_NOTIFY_DEL_DEVICE, dev);
         device_remove_attrs(dev);
  AttrsError:
         device_remove_class_symlinks(dev);
@@ -1027,10 +1038,16 @@ void device_del(struct device *dev)
         struct device *parent = dev->parent;
         struct class_interface *class_intf;
 
+        /* Notify clients of device removal.  This call must come
+         * before dpm_sysfs_remove().
+         */
+        if (dev->bus)
+                blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
+                                             BUS_NOTIFY_DEL_DEVICE, dev);
         device_pm_remove(dev);
         dpm_sysfs_remove(dev);
         if (parent)
-                klist_del(&dev->knode_parent);
+                klist_del(&dev->p->knode_parent);
         if (MAJOR(dev->devt)) {
                 device_remove_sys_dev_entry(dev);
                 device_remove_file(dev, &devt_attr);
@@ -1064,9 +1081,6 @@ void device_del(struct device *dev)
          */
         if (platform_notify_remove)
                 platform_notify_remove(dev);
-        if (dev->bus)
-                blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
-                                             BUS_NOTIFY_DEL_DEVICE, dev);
         kobject_uevent(&dev->kobj, KOBJ_REMOVE);
         cleanup_device_parent(dev);
         kobject_del(&dev->kobj);
@@ -1086,7 +1100,7 @@ void device_del(struct device *dev)
  */
 void device_unregister(struct device *dev)
 {
-        pr_debug("device: '%s': %s\n", dev->bus_id, __func__);
+        pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
         device_del(dev);
         put_device(dev);
 }
@@ -1094,7 +1108,14 @@ void device_unregister(struct device *dev)
 static struct device *next_device(struct klist_iter *i)
 {
         struct klist_node *n = klist_next(i);
-        return n ? container_of(n, struct device, knode_parent) : NULL;
+        struct device *dev = NULL;
+        struct device_private *p;
+
+        if (n) {
+                p = to_device_private_parent(n);
+                dev = p->device;
+        }
+        return dev;
 }
 
 /**
@@ -1116,7 +1137,7 @@ int device_for_each_child(struct device *parent, void *data,
         struct device *child;
         int error = 0;
 
-        klist_iter_init(&parent->klist_children, &i);
+        klist_iter_init(&parent->p->klist_children, &i);
         while ((child = next_device(&i)) && !error)
                 error = fn(child, data);
         klist_iter_exit(&i);
@@ -1147,7 +1168,7 @@ struct device *device_find_child(struct device *parent, void *data,
         if (!parent)
                 return NULL;
 
-        klist_iter_init(&parent->klist_children, &i);
+        klist_iter_init(&parent->p->klist_children, &i);
         while ((child = next_device(&i)))
                 if (match(child, data) && get_device(child))
                         break;
@@ -1196,10 +1217,101 @@ EXPORT_SYMBOL_GPL(put_device);
 EXPORT_SYMBOL_GPL(device_create_file);
 EXPORT_SYMBOL_GPL(device_remove_file);
 
+struct root_device
+{
+        struct device dev;
+        struct module *owner;
+};
+
+#define to_root_device(dev) container_of(dev, struct root_device, dev)
+
+static void root_device_release(struct device *dev)
+{
+        kfree(to_root_device(dev));
+}
+
+/**
+ * __root_device_register - allocate and register a root device
+ * @name: root device name
+ * @owner: owner module of the root device, usually THIS_MODULE
+ *
+ * This function allocates a root device and registers it
+ * using device_register(). In order to free the returned
+ * device, use root_device_unregister().
+ *
+ * Root devices are dummy devices which allow other devices
+ * to be grouped under /sys/devices. Use this function to
+ * allocate a root device and then use it as the parent of
+ * any device which should appear under /sys/devices/{name}
+ *
+ * The /sys/devices/{name} directory will also contain a
+ * 'module' symlink which points to the @owner directory
+ * in sysfs.
+ *
+ * Note: You probably want to use root_device_register().
+ */
+struct device *__root_device_register(const char *name, struct module *owner)
+{
+        struct root_device *root;
+        int err = -ENOMEM;
+
+        root = kzalloc(sizeof(struct root_device), GFP_KERNEL);
+        if (!root)
+                return ERR_PTR(err);
+
+        err = dev_set_name(&root->dev, name);
+        if (err) {
+                kfree(root);
+                return ERR_PTR(err);
+        }
+
+        root->dev.release = root_device_release;
+
+        err = device_register(&root->dev);
+        if (err) {
+                put_device(&root->dev);
+                return ERR_PTR(err);
+        }
+
+#ifdef CONFIG_MODULE    /* gotta find a "cleaner" way to do this */
+        if (owner) {
+                struct module_kobject *mk = &owner->mkobj;
+
+                err = sysfs_create_link(&root->dev.kobj, &mk->kobj, "module");
+                if (err) {
+                        device_unregister(&root->dev);
+                        return ERR_PTR(err);
+                }
+                root->owner = owner;
+        }
+#endif
+
+        return &root->dev;
+}
+EXPORT_SYMBOL_GPL(__root_device_register);
+
+/**
+ * root_device_unregister - unregister and free a root device
+ * @root: device going away.
+ *
+ * This function unregisters and cleans up a device that was created by
+ * root_device_register().
+ */
+void root_device_unregister(struct device *dev)
+{
+        struct root_device *root = to_root_device(dev);
+
+        if (root->owner)
+                sysfs_remove_link(&root->dev.kobj, "module");
+
+        device_unregister(dev);
+}
+EXPORT_SYMBOL_GPL(root_device_unregister);
+
 
 static void device_create_release(struct device *dev)
 {
-        pr_debug("device: '%s': %s\n", dev->bus_id, __func__);
+        pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
         kfree(dev);
 }
 
@@ -1344,7 +1456,7 @@ int device_rename(struct device *dev, char *new_name)
         if (!dev)
                 return -EINVAL;
 
-        pr_debug("device: '%s': %s: renaming to '%s'\n", dev->bus_id,
+        pr_debug("device: '%s': %s: renaming to '%s'\n", dev_name(dev),
                  __func__, new_name);
 
 #ifdef CONFIG_SYSFS_DEPRECATED
@@ -1381,7 +1493,7 @@ int device_rename(struct device *dev, char *new_name)
 #else
         if (dev->class) {
                 error = sysfs_create_link_nowarn(&dev->class->p->class_subsys.kobj,
-                                                 &dev->kobj, dev->bus_id);
+                                                 &dev->kobj, dev_name(dev));
                 if (error)
                         goto out;
                 sysfs_remove_link(&dev->class->p->class_subsys.kobj,
@@ -1459,8 +1571,8 @@ int device_move(struct device *dev, struct device *new_parent)
         new_parent = get_device(new_parent);
         new_parent_kobj = get_device_parent(dev, new_parent);
 
-        pr_debug("device: '%s': %s: moving to '%s'\n", dev->bus_id,
-                 __func__, new_parent ? new_parent->bus_id : "<NULL>");
+        pr_debug("device: '%s': %s: moving to '%s'\n", dev_name(dev),
+                 __func__, new_parent ? dev_name(new_parent) : "<NULL>");
         error = kobject_move(&dev->kobj, new_parent_kobj);
         if (error) {
                 cleanup_glue_dir(dev, new_parent_kobj);
@@ -1470,9 +1582,10 @@ int device_move(struct device *dev, struct device *new_parent)
         old_parent = dev->parent;
         dev->parent = new_parent;
         if (old_parent)
-                klist_remove(&dev->knode_parent);
+                klist_remove(&dev->p->knode_parent);
         if (new_parent) {
-                klist_add_tail(&dev->knode_parent, &new_parent->klist_children);
+                klist_add_tail(&dev->p->knode_parent,
+                               &new_parent->p->klist_children);
                 set_dev_node(dev, dev_to_node(new_parent));
         }
 
@@ -1484,11 +1597,11 @@ int device_move(struct device *dev, struct device *new_parent)
                 device_move_class_links(dev, new_parent, old_parent);
                 if (!kobject_move(&dev->kobj, &old_parent->kobj)) {
                         if (new_parent)
-                                klist_remove(&dev->knode_parent);
+                                klist_remove(&dev->p->knode_parent);
                         dev->parent = old_parent;
                         if (old_parent) {
-                                klist_add_tail(&dev->knode_parent,
-                                               &old_parent->klist_children);
+                                klist_add_tail(&dev->p->knode_parent,
+                                               &old_parent->p->klist_children);
                                 set_dev_node(dev, dev_to_node(old_parent));
                         }
                 }
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 20febc00a525..6fdaf76f033f 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -28,20 +28,20 @@
 
 static void driver_bound(struct device *dev)
 {
-        if (klist_node_attached(&dev->knode_driver)) {
+        if (klist_node_attached(&dev->p->knode_driver)) {
                 printk(KERN_WARNING "%s: device %s already bound\n",
                         __func__, kobject_name(&dev->kobj));
                 return;
         }
 
-        pr_debug("driver: '%s': %s: bound to device '%s'\n", dev->bus_id,
+        pr_debug("driver: '%s': %s: bound to device '%s'\n", dev_name(dev),
                  __func__, dev->driver->name);
 
         if (dev->bus)
                 blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
                                              BUS_NOTIFY_BOUND_DRIVER, dev);
 
-        klist_add_tail(&dev->knode_driver, &dev->driver->p->klist_devices);
+        klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
 }
 
 static int driver_sysfs_add(struct device *dev)
@@ -104,13 +104,13 @@ static int really_probe(struct device *dev, struct device_driver *drv)
 
         atomic_inc(&probe_count);
         pr_debug("bus: '%s': %s: probing driver %s with device %s\n",
-                 drv->bus->name, __func__, drv->name, dev->bus_id);
+                 drv->bus->name, __func__, drv->name, dev_name(dev));
         WARN_ON(!list_empty(&dev->devres_head));
 
         dev->driver = drv;
         if (driver_sysfs_add(dev)) {
                 printk(KERN_ERR "%s: driver_sysfs_add(%s) failed\n",
-                        __func__, dev->bus_id);
+                        __func__, dev_name(dev));
                 goto probe_failed;
         }
 
@@ -127,7 +127,7 @@ static int really_probe(struct device *dev, struct device_driver *drv)
         driver_bound(dev);
         ret = 1;
         pr_debug("bus: '%s': %s: bound device %s to driver %s\n",
-                 drv->bus->name, __func__, dev->bus_id, drv->name);
+                 drv->bus->name, __func__, dev_name(dev), drv->name);
         goto done;
 
 probe_failed:
@@ -139,7 +139,7 @@ probe_failed:
                 /* driver matched but the probe failed */
                 printk(KERN_WARNING
                        "%s: probe of %s failed with error %d\n",
-                       drv->name, dev->bus_id, ret);
+                       drv->name, dev_name(dev), ret);
         }
         /*
          * Ignore errors returned by ->probe so that the next driver can try
@@ -194,7 +194,7 @@ int driver_probe_device(struct device_driver *drv, struct device *dev)
                 goto done;
 
         pr_debug("bus: '%s': %s: matched device %s with driver %s\n",
-                 drv->bus->name, __func__, dev->bus_id, drv->name);
+                 drv->bus->name, __func__, dev_name(dev), drv->name);
 
         ret = really_probe(dev, drv);
 
@@ -298,7 +298,6 @@ static void __device_release_driver(struct device *dev)
         drv = dev->driver;
         if (drv) {
                 driver_sysfs_remove(dev);
-                sysfs_remove_link(&dev->kobj, "driver");
 
                 if (dev->bus)
                         blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
@@ -311,7 +310,7 @@ static void __device_release_driver(struct device *dev)
                         drv->remove(dev);
                 devres_release_all(dev);
                 dev->driver = NULL;
-                klist_remove(&dev->knode_driver);
+                klist_remove(&dev->p->knode_driver);
         }
 }
 
@@ -341,6 +340,7 @@ EXPORT_SYMBOL_GPL(device_release_driver);
  */
 void driver_detach(struct device_driver *drv)
 {
+        struct device_private *dev_prv;
         struct device *dev;
 
         for (;;) {
@@ -349,8 +349,10 @@ void driver_detach(struct device_driver *drv)
                         spin_unlock(&drv->p->klist_devices.k_lock);
                         break;
                 }
-                dev = list_entry(drv->p->klist_devices.k_list.prev,
-                                struct device, knode_driver.n_node);
+                dev_prv = list_entry(drv->p->klist_devices.k_list.prev,
+                                     struct device_private,
+                                     knode_driver.n_node);
+                dev = dev_prv->device;
                 get_device(dev);
                 spin_unlock(&drv->p->klist_devices.k_lock);
 
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 1e2bda780e48..b76cc69f1106 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -19,7 +19,14 @@
 static struct device *next_device(struct klist_iter *i)
 {
         struct klist_node *n = klist_next(i);
-        return n ? container_of(n, struct device, knode_driver) : NULL;
+        struct device *dev = NULL;
+        struct device_private *dev_prv;
+
+        if (n) {
+                dev_prv = to_device_private_driver(n);
+                dev = dev_prv->device;
+        }
+        return dev;
 }
 
 /**
@@ -42,7 +49,7 @@ int driver_for_each_device(struct device_driver *drv, struct device *start,
                 return -EINVAL;
 
         klist_iter_init_node(&drv->p->klist_devices, &i,
-                             start ? &start->knode_driver : NULL);
+                             start ? &start->p->knode_driver : NULL);
         while ((dev = next_device(&i)) && !error)
                 error = fn(dev, data);
         klist_iter_exit(&i);
@@ -76,7 +83,7 @@ struct device *driver_find_device(struct device_driver *drv,
                 return NULL;
 
         klist_iter_init_node(&drv->p->klist_devices, &i,
-                             (start ? &start->knode_driver : NULL));
+                             (start ? &start->p->knode_driver : NULL));
         while ((dev = next_device(&i)))
                 if (match(dev, data) && get_device(dev))
                         break;
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index b7e571031ecd..44699d9dd85c 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -291,12 +291,6 @@ firmware_class_timeout(u_long data)
         fw_load_abort(fw_priv);
 }
 
-static inline void fw_setup_device_id(struct device *f_dev, struct device *dev)
-{
-        /* XXX warning we should watch out for name collisions */
-        strlcpy(f_dev->bus_id, dev->bus_id, BUS_ID_SIZE);
-}
-
 static int fw_register_device(struct device **dev_p, const char *fw_name,
                               struct device *device)
 {
@@ -321,7 +315,7 @@ static int fw_register_device(struct device **dev_p, const char *fw_name,
         fw_priv->timeout.data = (u_long) fw_priv;
         init_timer(&fw_priv->timeout);
 
-        fw_setup_device_id(f_dev, device);
+        dev_set_name(f_dev, dev_name(device));
         f_dev->parent = device;
         f_dev->class = &firmware_class;
         dev_set_drvdata(f_dev, fw_priv);
diff --git a/drivers/base/isa.c b/drivers/base/isa.c
index efd577574948..479694b6cbe3 100644
--- a/drivers/base/isa.c
+++ b/drivers/base/isa.c
@@ -11,7 +11,7 @@
 #include <linux/isa.h>
 
 static struct device isa_bus = {
-        .bus_id         = "isa"
+        .init_name      = "isa"
 };
 
 struct isa_dev {
@@ -135,9 +135,8 @@ int isa_register_driver(struct isa_driver *isa_driver, unsigned int ndev)
                 isa_dev->dev.parent     = &isa_bus;
                 isa_dev->dev.bus        = &isa_bus_type;
 
-                snprintf(isa_dev->dev.bus_id, BUS_ID_SIZE, "%s.%u",
-                                isa_driver->driver.name, id);
-
+                dev_set_name(&isa_dev->dev, "%s.%u",
+                             isa_driver->driver.name, id);
                 isa_dev->dev.platform_data      = isa_driver;
                 isa_dev->dev.release            = isa_dev_release;
                 isa_dev->id                     = id;
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index dfcbfe504867..349a1013603f 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -24,7 +24,7 @@
                                  driver))
 
 struct device platform_bus = {
-        .bus_id         = "platform",
+        .init_name      = "platform",
 };
 EXPORT_SYMBOL_GPL(platform_bus);
 
@@ -242,16 +242,15 @@ int platform_device_add(struct platform_device *pdev)
         pdev->dev.bus = &platform_bus_type;
 
         if (pdev->id != -1)
-                snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%d", pdev->name,
-                         pdev->id);
+                dev_set_name(&pdev->dev, "%s.%d", pdev->name,  pdev->id);
         else
-                strlcpy(pdev->dev.bus_id, pdev->name, BUS_ID_SIZE);
+                dev_set_name(&pdev->dev, pdev->name);
 
         for (i = 0; i < pdev->num_resources; i++) {
                 struct resource *p, *r = &pdev->resource[i];
 
                 if (r->name == NULL)
-                        r->name = pdev->dev.bus_id;
+                        r->name = dev_name(&pdev->dev);
 
                 p = r->parent;
                 if (!p) {
@@ -264,14 +263,14 @@ int platform_device_add(struct platform_device *pdev)
                 if (p && insert_resource(p, r)) {
                         printk(KERN_ERR
                                "%s: failed to claim resource %d\n",
-                               pdev->dev.bus_id, i);
+                               dev_name(&pdev->dev), i);
                         ret = -EBUSY;
                         goto failed;
                 }
         }
 
         pr_debug("Registering platform device '%s'. Parent at %s\n",
-                 pdev->dev.bus_id, pdev->dev.parent->bus_id);
+                 dev_name(&pdev->dev), dev_name(pdev->dev.parent));
 
         ret = device_add(&pdev->dev);
         if (ret == 0)
@@ -503,8 +502,6 @@ int platform_driver_register(struct platform_driver *drv)
                 drv->driver.suspend = platform_drv_suspend;
         if (drv->resume)
                 drv->driver.resume = platform_drv_resume;
-        if (drv->pm)
-                drv->driver.pm = &drv->pm->base;
         return driver_register(&drv->driver);
 }
 EXPORT_SYMBOL_GPL(platform_driver_register);
@@ -609,7 +606,7 @@ static int platform_match(struct device *dev, struct device_driver *drv)
         struct platform_device *pdev;
 
         pdev = container_of(dev, struct platform_device, dev);
-        return (strncmp(pdev->name, drv->name, BUS_ID_SIZE) == 0);
+        return (strcmp(pdev->name, drv->name) == 0);
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -686,7 +683,10 @@ static int platform_pm_suspend(struct device *dev)
         struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (drv && drv->pm) {
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
                 if (drv->pm->suspend)
                         ret = drv->pm->suspend(dev);
         } else {
@@ -698,16 +698,15 @@ static int platform_pm_suspend(struct device *dev)
 
 static int platform_pm_suspend_noirq(struct device *dev)
 {
-        struct platform_driver *pdrv;
+        struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (!dev->driver)
+        if (!drv)
                 return 0;
 
-        pdrv = to_platform_driver(dev->driver);
-        if (pdrv->pm) {
-                if (pdrv->pm->suspend_noirq)
-                        ret = pdrv->pm->suspend_noirq(dev);
+        if (drv->pm) {
+                if (drv->pm->suspend_noirq)
+                        ret = drv->pm->suspend_noirq(dev);
         } else {
                 ret = platform_legacy_suspend_late(dev, PMSG_SUSPEND);
         }
@@ -720,7 +719,10 @@ static int platform_pm_resume(struct device *dev)
         struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (drv && drv->pm) {
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
                 if (drv->pm->resume)
                         ret = drv->pm->resume(dev);
         } else {
@@ -732,16 +734,15 @@ static int platform_pm_resume(struct device *dev)
 
 static int platform_pm_resume_noirq(struct device *dev)
 {
-        struct platform_driver *pdrv;
+        struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (!dev->driver)
+        if (!drv)
                 return 0;
 
-        pdrv = to_platform_driver(dev->driver);
-        if (pdrv->pm) {
-                if (pdrv->pm->resume_noirq)
-                        ret = pdrv->pm->resume_noirq(dev);
+        if (drv->pm) {
+                if (drv->pm->resume_noirq)
+                        ret = drv->pm->resume_noirq(dev);
         } else {
                 ret = platform_legacy_resume_early(dev);
         }
@@ -780,16 +781,15 @@ static int platform_pm_freeze(struct device *dev)
 
 static int platform_pm_freeze_noirq(struct device *dev)
 {
-        struct platform_driver *pdrv;
+        struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (!dev->driver)
+        if (!drv)
                 return 0;
 
-        pdrv = to_platform_driver(dev->driver);
-        if (pdrv->pm) {
-                if (pdrv->pm->freeze_noirq)
-                        ret = pdrv->pm->freeze_noirq(dev);
+        if (drv->pm) {
+                if (drv->pm->freeze_noirq)
+                        ret = drv->pm->freeze_noirq(dev);
         } else {
                 ret = platform_legacy_suspend_late(dev, PMSG_FREEZE);
         }
@@ -802,7 +802,10 @@ static int platform_pm_thaw(struct device *dev)
         struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (drv && drv->pm) {
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
                 if (drv->pm->thaw)
                         ret = drv->pm->thaw(dev);
         } else {
@@ -814,16 +817,15 @@ static int platform_pm_thaw(struct device *dev)
 
 static int platform_pm_thaw_noirq(struct device *dev)
 {
-        struct platform_driver *pdrv;
+        struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (!dev->driver)
+        if (!drv)
                 return 0;
 
-        pdrv = to_platform_driver(dev->driver);
-        if (pdrv->pm) {
-                if (pdrv->pm->thaw_noirq)
-                        ret = pdrv->pm->thaw_noirq(dev);
+        if (drv->pm) {
+                if (drv->pm->thaw_noirq)
+                        ret = drv->pm->thaw_noirq(dev);
         } else {
                 ret = platform_legacy_resume_early(dev);
         }
@@ -836,7 +838,10 @@ static int platform_pm_poweroff(struct device *dev)
         struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (drv && drv->pm) {
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
                 if (drv->pm->poweroff)
                         ret = drv->pm->poweroff(dev);
         } else {
@@ -848,16 +853,15 @@ static int platform_pm_poweroff(struct device *dev)
 
 static int platform_pm_poweroff_noirq(struct device *dev)
 {
-        struct platform_driver *pdrv;
+        struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (!dev->driver)
+        if (!drv)
                 return 0;
 
-        pdrv = to_platform_driver(dev->driver);
-        if (pdrv->pm) {
-                if (pdrv->pm->poweroff_noirq)
-                        ret = pdrv->pm->poweroff_noirq(dev);
+        if (drv->pm) {
+                if (drv->pm->poweroff_noirq)
+                        ret = drv->pm->poweroff_noirq(dev);
         } else {
                 ret = platform_legacy_suspend_late(dev, PMSG_HIBERNATE);
         }
@@ -870,7 +874,10 @@ static int platform_pm_restore(struct device *dev)
         struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (drv && drv->pm) {
+        if (!drv)
+                return 0;
+
+        if (drv->pm) {
                 if (drv->pm->restore)
                         ret = drv->pm->restore(dev);
         } else {
@@ -882,16 +889,15 @@ static int platform_pm_restore(struct device *dev)
 
 static int platform_pm_restore_noirq(struct device *dev)
 {
-        struct platform_driver *pdrv;
+        struct device_driver *drv = dev->driver;
         int ret = 0;
 
-        if (!dev->driver)
+        if (!drv)
                 return 0;
 
-        pdrv = to_platform_driver(dev->driver);
-        if (pdrv->pm) {
-                if (pdrv->pm->restore_noirq)
-                        ret = pdrv->pm->restore_noirq(dev);
+        if (drv->pm) {
+                if (drv->pm->restore_noirq)
+                        ret = drv->pm->restore_noirq(dev);
         } else {
                 ret = platform_legacy_resume_early(dev);
         }
@@ -912,17 +918,15 @@ static int platform_pm_restore_noirq(struct device *dev)
 
 #endif /* !CONFIG_HIBERNATION */
 
-static struct pm_ext_ops platform_pm_ops = {
-        .base = {
-                .prepare = platform_pm_prepare,
-                .complete = platform_pm_complete,
-                .suspend = platform_pm_suspend,
-                .resume = platform_pm_resume,
-                .freeze = platform_pm_freeze,
-                .thaw = platform_pm_thaw,
-                .poweroff = platform_pm_poweroff,
-                .restore = platform_pm_restore,
-        },
+static struct dev_pm_ops platform_dev_pm_ops = {
+        .prepare = platform_pm_prepare,
+        .complete = platform_pm_complete,
+        .suspend = platform_pm_suspend,
+        .resume = platform_pm_resume,
+        .freeze = platform_pm_freeze,
+        .thaw = platform_pm_thaw,
+        .poweroff = platform_pm_poweroff,
+        .restore = platform_pm_restore,
         .suspend_noirq = platform_pm_suspend_noirq,
         .resume_noirq = platform_pm_resume_noirq,
         .freeze_noirq = platform_pm_freeze_noirq,
@@ -931,7 +935,7 @@ static struct pm_ext_ops platform_pm_ops = {
         .restore_noirq = platform_pm_restore_noirq,
 };
 
-#define PLATFORM_PM_OPS_PTR     &platform_pm_ops
+#define PLATFORM_PM_OPS_PTR     (&platform_dev_pm_ops)
 
 #else /* !CONFIG_PM_SLEEP */
 
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 692c20ba5144..670c9d6c1407 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -76,7 +76,7 @@ void device_pm_add(struct device *dev)
         if (dev->parent) {
                 if (dev->parent->power.status >= DPM_SUSPENDING)
                         dev_warn(dev, "parent %s should not be sleeping\n",
-                                dev->parent->bus_id);
+                                 dev_name(dev->parent));
         } else if (transition_started) {
                 /*
                  * We refuse to register parentless devices while a PM
@@ -112,7 +112,8 @@ void device_pm_remove(struct device *dev)
  *      @ops:   PM operations to choose from.
  *      @state: PM transition of the system being carried out.
  */
-static int pm_op(struct device *dev, struct pm_ops *ops, pm_message_t state)
+static int pm_op(struct device *dev, struct dev_pm_ops *ops,
+                        pm_message_t state)
 {
         int error = 0;
 
@@ -174,7 +175,7 @@ static int pm_op(struct device *dev, struct pm_ops *ops, pm_message_t state)
  *      The operation is executed with interrupts disabled by the only remaining
  *      functional CPU in the system.
  */
-static int pm_noirq_op(struct device *dev, struct pm_ext_ops *ops,
+static int pm_noirq_op(struct device *dev, struct dev_pm_ops *ops,
                         pm_message_t state)
 {
         int error = 0;
@@ -354,7 +355,7 @@ static int resume_device(struct device *dev, pm_message_t state)
         if (dev->bus) {
                 if (dev->bus->pm) {
                         pm_dev_dbg(dev, state, "");
-                        error = pm_op(dev, &dev->bus->pm->base, state);
+                        error = pm_op(dev, dev->bus->pm, state);
                 } else if (dev->bus->resume) {
                         pm_dev_dbg(dev, state, "legacy ");
                         error = dev->bus->resume(dev);
@@ -451,9 +452,9 @@ static void complete_device(struct device *dev, pm_message_t state)
                 dev->type->pm->complete(dev);
         }
 
-        if (dev->bus && dev->bus->pm && dev->bus->pm->base.complete) {
+        if (dev->bus && dev->bus->pm && dev->bus->pm->complete) {
                 pm_dev_dbg(dev, state, "completing ");
-                dev->bus->pm->base.complete(dev);
+                dev->bus->pm->complete(dev);
         }
 
         up(&dev->sem);
@@ -624,7 +625,7 @@ static int suspend_device(struct device *dev, pm_message_t state)
         if (dev->bus) {
                 if (dev->bus->pm) {
                         pm_dev_dbg(dev, state, "");
-                        error = pm_op(dev, &dev->bus->pm->base, state);
+                        error = pm_op(dev, dev->bus->pm, state);
                 } else if (dev->bus->suspend) {
                         pm_dev_dbg(dev, state, "legacy ");
                         error = dev->bus->suspend(dev, state);
@@ -685,10 +686,10 @@ static int prepare_device(struct device *dev, pm_message_t state)
 
         down(&dev->sem);
 
-        if (dev->bus && dev->bus->pm && dev->bus->pm->base.prepare) {
+        if (dev->bus && dev->bus->pm && dev->bus->pm->prepare) {
                 pm_dev_dbg(dev, state, "preparing ");
-                error = dev->bus->pm->base.prepare(dev);
-                suspend_report_result(dev->bus->pm->base.prepare, error);
+                error = dev->bus->pm->prepare(dev);
+                suspend_report_result(dev->bus->pm->prepare, error);
                 if (error)
                         goto End;
         }
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index 2aa6e8fc4def..0a1a2c4dbc6e 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -140,7 +140,7 @@ static unsigned int hash_string(unsigned int seed, const char *data, unsigned in
 
 void set_trace_device(struct device *dev)
 {
-        dev_hash_value = hash_string(DEVSEED, dev->bus_id, DEVHASH);
+        dev_hash_value = hash_string(DEVSEED, dev_name(dev), DEVHASH);
 }
 EXPORT_SYMBOL(set_trace_device);
 
@@ -192,7 +192,7 @@ static int show_dev_hash(unsigned int value)
 
         while (entry != &dpm_list) {
                 struct device * dev = to_device(entry);
-                unsigned int hash = hash_string(DEVSEED, dev->bus_id, DEVHASH);
+                unsigned int hash = hash_string(DEVSEED, dev_name(dev), DEVHASH);
                 if (hash == value) {
                         dev_info(dev, "hash matches\n");
                         match++;
diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c
index 4f8d67fed292..94ad2c3bfc4a 100644
--- a/drivers/char/mwave/mwavedd.c
+++ b/drivers/char/mwave/mwavedd.c
@@ -663,7 +663,7 @@ static int __init mwave_init(void)
 #if 0
         /* sysfs */
         memset(&mwave_device, 0, sizeof (struct device));
-        snprintf(mwave_device.bus_id, BUS_ID_SIZE, "mwave");
+        dev_set_name(&mwave_device, "mwave");
 
         if (device_register(&mwave_device))
                 goto cleanup_error;
diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
index e880d6c8d896..5a76d056b9d0 100644
--- a/drivers/firmware/dmi-id.c
+++ b/drivers/firmware/dmi-id.c
@@ -223,7 +223,7 @@ static int __init dmi_id_init(void)
         }
 
         dmi_dev->class = &dmi_class;
-        strcpy(dmi_dev->bus_id, "id");
+        dev_set_name(dmi_dev, "id");
         dmi_dev->groups = sys_dmi_attribute_groups;
 
         ret = device_register(dmi_dev);
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 82020abc329e..35e7aea4222c 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1213,7 +1213,7 @@ static int gpiolib_show(struct seq_file *s, void *unused)
                 if (dev)
                         seq_printf(s, ", %s/%s",
                                 dev->bus ? dev->bus->name : "no-bus",
-                                dev->bus_id);
+                                dev_name(dev));
                 if (chip->label)
                         seq_printf(s, ", %s", chip->label);
                 if (chip->can_sleep)
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 65d72d094c81..5aa6780652aa 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -488,7 +488,7 @@ int drm_sysfs_device_add(struct drm_minor *minor)
         else
                 minor_str = "card%d";
 
-        snprintf(minor->kdev.bus_id, BUS_ID_SIZE, minor_str, minor->index);
+        dev_set_name(&minor->kdev, minor_str, minor->index);
 
         err = device_register(&minor->kdev);
         if (err) {
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 076a59cdabe9..e15c3e7b07e9 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -76,7 +76,7 @@ void hwmon_device_unregister(struct device *dev)
 {
         int id;
 
-        if (likely(sscanf(dev->bus_id, HWMON_ID_FORMAT, &id) == 1)) {
+        if (likely(sscanf(dev_name(dev), HWMON_ID_FORMAT, &id) == 1)) {
                 device_unregister(dev);
                 spin_lock(&idr_lock);
                 idr_remove(&hwmon_idr, id);
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 8f9595f2fb53..55bd87c15c9a 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -190,7 +190,7 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
         }
 
         dev_info(&client->dev, "%s: sensor '%s'\n",
-                data->hwmon_dev->bus_id, client->name);
+                 dev_name(data->hwmon_dev), client->name);
 
         return 0;
 
diff --git a/drivers/idle/i7300_idle.c b/drivers/idle/i7300_idle.c
index fb176f6ef9f8..17e8ddd01334 100644
--- a/drivers/idle/i7300_idle.c
+++ b/drivers/idle/i7300_idle.c
@@ -177,7 +177,7 @@ static int __init i7300_idle_ioat_selftest(u8 *ctl,
 }
 
 static struct device dummy_dma_dev = {
-        .bus_id = "fallback device",
+        .init_name = "fallback device",
         .coherent_dma_mask = DMA_64BIT_MASK,
         .dma_mask = &dummy_dma_dev.coherent_dma_mask,
 };
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 4f4d1bb9f069..b43f7d3682d3 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -778,7 +778,7 @@ int ib_device_register_sysfs(struct ib_device *device)
         class_dev->class      = &ib_class;
         class_dev->driver_data = device;
         class_dev->parent     = device->dma_device;
-        strlcpy(class_dev->bus_id, device->name, BUS_ID_SIZE);
+        dev_set_name(class_dev, device->name);
 
         INIT_LIST_HEAD(&device->port_list);
 
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index e603736682bf..51bd9669cb1f 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -1266,8 +1266,7 @@ static void ib_ucm_add_one(struct ib_device *device)
         ucm_dev->dev.parent = device->dma_device;
         ucm_dev->dev.devt = ucm_dev->cdev.dev;
         ucm_dev->dev.release = ib_ucm_release_dev;
-        snprintf(ucm_dev->dev.bus_id, BUS_ID_SIZE, "ucm%d",
-                 ucm_dev->devnum);
+        dev_set_name(&ucm_dev->dev, "ucm%d", ucm_dev->devnum);
         if (device_register(&ucm_dev->dev))
                 goto err_cdev;
 
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 7c13db885bf6..54c8fe25c423 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1949,8 +1949,7 @@ static struct srp_host *srp_add_port(struct srp_device *device, u8 port)
 
         host->dev.class = &srp_class;
         host->dev.parent = device->dev->dma_device;
-        snprintf(host->dev.bus_id, BUS_ID_SIZE, "srp-%s-%d",
-                 device->dev->name, port);
+        dev_set_name(&host->dev, "srp-%s-%d", device->dev->name, port);
 
         if (device_register(&host->dev))
                 goto free_host;
diff --git a/drivers/isdn/mISDN/dsp_pipeline.c b/drivers/isdn/mISDN/dsp_pipeline.c
index 5ee6651b45b9..83639be7f7ad 100644
--- a/drivers/isdn/mISDN/dsp_pipeline.c
+++ b/drivers/isdn/mISDN/dsp_pipeline.c
@@ -91,7 +91,7 @@ int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
 
         entry->dev.class = elements_class;
         dev_set_drvdata(&entry->dev, elem);
-        snprintf(entry->dev.bus_id, BUS_ID_SIZE, elem->name);
+        dev_set_name(&entry->dev, elem->name);
         ret = device_register(&entry->dev);
         if (ret) {
                 printk(KERN_ERR "%s: failed to register %s\n",
diff --git a/drivers/lguest/lguest_device.c b/drivers/lguest/lguest_device.c
index 915da6b8c924..b4d44e571d76 100644
--- a/drivers/lguest/lguest_device.c
+++ b/drivers/lguest/lguest_device.c
@@ -321,10 +321,7 @@ static struct virtio_config_ops lguest_config_ops = {
 
 /* The root device for the lguest virtio devices.  This makes them appear as
  * /sys/devices/lguest/0,1,2 not /sys/devices/0,1,2. */
-static struct device lguest_root = {
-        .parent = NULL,
-        .bus_id = "lguest",
-};
+static struct device *lguest_root;
 
 /*D:120 This is the core of the lguest bus: actually adding a new device.
  * It's a separate function because it's neater that way, and because an
@@ -351,7 +348,7 @@ static void add_lguest_device(struct lguest_device_desc *d,
         }
 
         /* This devices' parent is the lguest/ dir. */
-        ldev->vdev.dev.parent = &lguest_root;
+        ldev->vdev.dev.parent = lguest_root;
         /* We have a unique device index thanks to the dev_index counter. */
         ldev->vdev.id.device = d->type;
         /* We have a simple set of routines for querying the device's
@@ -407,7 +404,8 @@ static int __init lguest_devices_init(void)
         if (strcmp(pv_info.name, "lguest") != 0)
                 return 0;
 
-        if (device_register(&lguest_root) != 0)
+        lguest_root = root_device_register("lguest");
+        if (IS_ERR(lguest_root))
                 panic("Could not register lguest root");
 
         /* Devices are in a single page above top of "normal" mem */
diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index ec9e5f32f0ae..6e149f4a1fff 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -33,7 +33,7 @@
 
 #undef DEBUG
 
-#define MAX_NODE_NAME_SIZE (BUS_ID_SIZE - 12)
+#define MAX_NODE_NAME_SIZE (20 - 12)
 
 static struct macio_chip      *macio_on_hold;
 
@@ -240,7 +240,7 @@ static void macio_create_fixup_irq(struct macio_dev *dev, int index,
         if (irq != NO_IRQ) {
                 dev->interrupt[index].start = irq;
                 dev->interrupt[index].flags = IORESOURCE_IRQ;
-                dev->interrupt[index].name = dev->ofdev.dev.bus_id;
+                dev->interrupt[index].name = dev_name(&dev->ofdev.dev);
         }
         if (dev->n_interrupts <= index)
                 dev->n_interrupts = index + 1;
@@ -303,7 +303,7 @@ static void macio_setup_interrupts(struct macio_dev *dev)
                         break;
                 res->start = irq;
                 res->flags = IORESOURCE_IRQ;
-                res->name = dev->ofdev.dev.bus_id;
+                res->name = dev_name(&dev->ofdev.dev);
                 if (macio_resource_quirks(np, res, i - 1)) {
                         memset(res, 0, sizeof(struct resource));
                         continue;
@@ -325,7 +325,7 @@ static void macio_setup_resources(struct macio_dev *dev,
                 if (index >= MACIO_DEV_COUNT_RESOURCES)
                         break;
                 *res = r;
-                res->name = dev->ofdev.dev.bus_id;
+                res->name = dev_name(&dev->ofdev.dev);
 
                 if (macio_resource_quirks(np, res, index)) {
                         memset(res, 0, sizeof(struct resource));
@@ -338,7 +338,7 @@ static void macio_setup_resources(struct macio_dev *dev,
                 if (insert_resource(parent_res, res)) {
                         printk(KERN_WARNING "Can't request resource "
                                "%d for MacIO device %s\n",
-                               index, dev->ofdev.dev.bus_id);
+                               index, dev_name(&dev->ofdev.dev));
                 }
         }
         dev->n_resources = index;
@@ -385,8 +385,8 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
 
         /* MacIO itself has a different reg, we use it's PCI base */
         if (np == chip->of_node) {
-                sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s",
-                        chip->lbus.index,
+                dev_set_name(&dev->ofdev.dev, "%1d.%08x:%.*s",
+                             chip->lbus.index,
 #ifdef CONFIG_PCI
                         (unsigned int)pci_resource_start(chip->lbus.pdev, 0),
 #else
@@ -395,9 +395,9 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
                         MAX_NODE_NAME_SIZE, np->name);
         } else {
                 reg = of_get_property(np, "reg", NULL);
-                sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s",
-                        chip->lbus.index,
-                        reg ? *reg : 0, MAX_NODE_NAME_SIZE, np->name);
+                dev_set_name(&dev->ofdev.dev, "%1d.%08x:%.*s",
+                             chip->lbus.index,
+                             reg ? *reg : 0, MAX_NODE_NAME_SIZE, np->name);
         }
 
         /* Setup interrupts & resources */
@@ -408,7 +408,7 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
         /* Register with core */
         if (of_device_register(&dev->ofdev) != 0) {
                 printk(KERN_DEBUG"macio: device registration error for %s!\n",
-                       dev->ofdev.dev.bus_id);
+                       dev_name(&dev->ofdev.dev));
                 kfree(dev);
                 return NULL;
         }
@@ -558,7 +558,7 @@ err_out:
                 resource_no,
                 macio_resource_len(dev, resource_no),
                 macio_resource_start(dev, resource_no),
-                dev->ofdev.dev.bus_id);
+                dev_name(&dev->ofdev.dev));
         return -EBUSY;
 }
 
diff --git a/drivers/memstick/core/memstick.c b/drivers/memstick/core/memstick.c
index cea46906408e..a5b448ea4eab 100644
--- a/drivers/memstick/core/memstick.c
+++ b/drivers/memstick/core/memstick.c
@@ -385,8 +385,7 @@ static struct memstick_dev *memstick_alloc_card(struct memstick_host *host)
 
         if (card) {
                 card->host = host;
-                snprintf(card->dev.bus_id, sizeof(card->dev.bus_id),
-                         "%s", host->dev.bus_id);
+                dev_set_name(&card->dev, "%s", dev_name(&host->dev));
                 card->dev.parent = &host->dev;
                 card->dev.bus = &memstick_bus_type;
                 card->dev.release = memstick_free_card;
@@ -519,7 +518,7 @@ int memstick_add_host(struct memstick_host *host)
         if (rc)
                 return rc;
 
-        snprintf(host->dev.bus_id, BUS_ID_SIZE, "memstick%u", host->id);
+        dev_set_name(&host->dev, "memstick%u", host->id);
 
         rc = device_add(&host->dev);
         if (rc) {
diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index 7911151e56a3..1f1e3982b1aa 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -887,14 +887,14 @@ try_again:
         if (rc) {
                 printk(KERN_WARNING
                        "%s: could not switch to 4-bit mode, error %d\n",
-                       card->dev.bus_id, rc);
+                       dev_name(&card->dev), rc);
                 return 0;
         }
 
         msb->system = MEMSTICK_SYS_PAR4;
         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
         printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
-               card->dev.bus_id);
+               dev_name(&card->dev));
 
         if (msb->caps & MEMSTICK_CAP_PAR8) {
                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
@@ -905,11 +905,11 @@ try_again:
                                         MEMSTICK_PAR8);
                         printk(KERN_INFO
                                "%s: switching to 8-bit parallel mode\n",
-                               card->dev.bus_id);
+                               dev_name(&card->dev));
                 } else
                         printk(KERN_WARNING
                                "%s: could not switch to 8-bit mode, error %d\n",
-                               card->dev.bus_id, rc);
+                               dev_name(&card->dev), rc);
         }
 
         card->next_request = h_mspro_block_req_init;
@@ -922,7 +922,7 @@ try_again:
         if (rc) {
                 printk(KERN_WARNING
                        "%s: interface error, trying to fall back to serial\n",
-                       card->dev.bus_id);
+                       dev_name(&card->dev));
                 msb->system = MEMSTICK_SYS_SERIAL;
                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
                 msleep(10);
@@ -992,14 +992,14 @@ static int mspro_block_read_attributes(struct memstick_dev *card)
 
         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
-                       card->dev.bus_id, be16_to_cpu(attr->signature));
+                       dev_name(&card->dev), be16_to_cpu(attr->signature));
                 rc = -ENODEV;
                 goto out_free_attr;
         }
 
         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
                 printk(KERN_WARNING "%s: way too many attribute entries\n",
-                       card->dev.bus_id);
+                       dev_name(&card->dev));
                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
         } else
                 attr_count = attr->count;
diff --git a/drivers/memstick/host/tifm_ms.c b/drivers/memstick/host/tifm_ms.c
index d32d6ad8f3fc..03f71a431c82 100644
--- a/drivers/memstick/host/tifm_ms.c
+++ b/drivers/memstick/host/tifm_ms.c
@@ -546,7 +546,7 @@ static void tifm_ms_abort(unsigned long data)
         printk(KERN_ERR
                "%s : card failed to respond for a long period of time "
                "(%x, %x)\n",
-               host->dev->dev.bus_id, host->req ? host->req->tpc : 0,
+               dev_name(&host->dev->dev), host->req ? host->req->tpc : 0,
                host->cmd_flags);
 
         tifm_eject(host->dev);
@@ -561,7 +561,7 @@ static int tifm_ms_probe(struct tifm_dev *sock)
         if (!(TIFM_SOCK_STATE_OCCUPIED
               & readl(sock->addr + SOCK_PRESENT_STATE))) {
                 printk(KERN_WARNING "%s : card gone, unexpectedly\n",
-                       sock->dev.bus_id);
+                       dev_name(&sock->dev));
                 return rc;
         }
 
diff --git a/drivers/message/i2o/device.c b/drivers/message/i2o/device.c
index c455da4ff411..0ee4264f5db7 100644
--- a/drivers/message/i2o/device.c
+++ b/drivers/message/i2o/device.c
@@ -132,7 +132,7 @@ static void i2o_device_release(struct device *dev)
 {
         struct i2o_device *i2o_dev = to_i2o_device(dev);
 
-        pr_debug("i2o: device %s released\n", dev->bus_id);
+        pr_debug("i2o: device %s released\n", dev_name(dev));
 
         kfree(i2o_dev);
 }
@@ -227,8 +227,8 @@ static int i2o_device_add(struct i2o_controller *c, i2o_lct_entry *entry)
 
         i2o_dev->lct_data = *entry;
 
-        snprintf(i2o_dev->device.bus_id, BUS_ID_SIZE, "%d:%03x", c->unit,
-                 i2o_dev->lct_data.tid);
+        dev_set_name(&i2o_dev->device, "%d:%03x", c->unit,
+                     i2o_dev->lct_data.tid);
 
         i2o_dev->iop = c;
         i2o_dev->device.parent = &c->device;
@@ -279,7 +279,7 @@ static int i2o_device_add(struct i2o_controller *c, i2o_lct_entry *entry)
 
         i2o_driver_notify_device_add_all(i2o_dev);
 
-        pr_debug("i2o: device %s added\n", i2o_dev->device.bus_id);
+        pr_debug("i2o: device %s added\n", dev_name(&i2o_dev->device));
 
         return 0;
 
diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c
index 54a3016ff45d..9a36b5a7de57 100644
--- a/drivers/message/i2o/i2o_proc.c
+++ b/drivers/message/i2o/i2o_proc.c
@@ -1300,7 +1300,7 @@ static int i2o_seq_show_dev_name(struct seq_file *seq, void *v)
 {
         struct i2o_device *d = (struct i2o_device *)seq->private;
 
-        seq_printf(seq, "%s\n", d->device.bus_id);
+        seq_printf(seq, "%s\n", dev_name(&d->device));
 
         return 0;
 }
diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c
index 35c67d1f255e..27cf4af0e13d 100644
--- a/drivers/message/i2o/iop.c
+++ b/drivers/message/i2o/iop.c
@@ -1072,7 +1072,7 @@ struct i2o_controller *i2o_iop_alloc(void)
 
         c->device.release = &i2o_iop_release;
 
-        snprintf(c->device.bus_id, BUS_ID_SIZE, "iop%d", c->unit);
+        dev_set_name(&c->device, "iop%d", c->unit);
 
 #if BITS_PER_LONG == 64
         spin_lock_init(&c->context_list_lock);
diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index e11e1ac50900..3d2fc216bae5 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -29,7 +29,7 @@ static struct device_driver gru_driver = {
 };
 
 static struct device gru_device = {
-        .bus_id = {0},
+        .init_name = "",
         .driver = &gru_driver,
 };
 
diff --git a/drivers/misc/sgi-xp/xp_main.c b/drivers/misc/sgi-xp/xp_main.c
index 9a2e77172d94..16f8dcab2da4 100644
--- a/drivers/misc/sgi-xp/xp_main.c
+++ b/drivers/misc/sgi-xp/xp_main.c
@@ -25,7 +25,7 @@ struct device_driver xp_dbg_name = {
 };
 
 struct device xp_dbg_subname = {
-        .bus_id = {0},          /* set to "" */
+        .init_name = "",                /* set to "" */
         .driver = &xp_dbg_name
 };
 
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index e8d5cfbd32c2..89218f7cfaa7 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -59,12 +59,12 @@ struct device_driver xpc_dbg_name = {
 };
 
 struct device xpc_part_dbg_subname = {
-        .bus_id = {0},          /* set to "part" at xpc_init() time */
+        .init_name = "",        /* set to "part" at xpc_init() time */
         .driver = &xpc_dbg_name
 };
 
 struct device xpc_chan_dbg_subname = {
-        .bus_id = {0},          /* set to "chan" at xpc_init() time */
+        .init_name = "",        /* set to "chan" at xpc_init() time */
         .driver = &xpc_dbg_name
 };
 
@@ -1258,8 +1258,8 @@ xpc_init(void)
         int ret;
         struct task_struct *kthread;
 
-        snprintf(xpc_part->bus_id, BUS_ID_SIZE, "part");
-        snprintf(xpc_chan->bus_id, BUS_ID_SIZE, "chan");
+        dev_set_name(xpc_part, "part");
+        dev_set_name(xpc_chan, "chan");
 
         if (is_shub()) {
                 /*
diff --git a/drivers/misc/sgi-xp/xpnet.c b/drivers/misc/sgi-xp/xpnet.c
index 8e6aa9508f46..81152b3e360c 100644
--- a/drivers/misc/sgi-xp/xpnet.c
+++ b/drivers/misc/sgi-xp/xpnet.c
@@ -138,7 +138,7 @@ struct device_driver xpnet_dbg_name = {
 };
 
 struct device xpnet_dbg_subname = {
-        .bus_id = {0},          /* set to "" */
+        .init_name = "",        /* set to "" */
         .driver = &xpnet_dbg_name
 };
 
diff --git a/drivers/misc/tifm_7xx1.c b/drivers/misc/tifm_7xx1.c
index af6173319e07..be5672a98702 100644
--- a/drivers/misc/tifm_7xx1.c
+++ b/drivers/misc/tifm_7xx1.c
@@ -164,7 +164,7 @@ static void tifm_7xx1_switch_media(struct work_struct *work)
                 if (sock) {
                         printk(KERN_INFO
                                "%s : demand removing card from socket %u:%u\n",
-                               fm->dev.bus_id, fm->id, cnt);
+                               dev_name(&fm->dev), fm->id, cnt);
                         fm->sockets[cnt] = NULL;
                         sock_addr = sock->addr;
                         spin_unlock_irqrestore(&fm->lock, flags);
diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c
index 82dc72a1484f..98bcba521da2 100644
--- a/drivers/misc/tifm_core.c
+++ b/drivers/misc/tifm_core.c
@@ -203,7 +203,7 @@ int tifm_add_adapter(struct tifm_adapter *fm)
         if (rc)
                 return rc;
 
-        snprintf(fm->dev.bus_id, BUS_ID_SIZE, "tifm%u", fm->id);
+        dev_set_name(&fm->dev, "tifm%u", fm->id);
         rc = device_add(&fm->dev);
         if (rc) {
                 spin_lock(&tifm_adapter_lock);
@@ -266,9 +266,8 @@ struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id,
                 sock->dev.dma_mask = fm->dev.parent->dma_mask;
                 sock->dev.release = tifm_free_device;
 
-                snprintf(sock->dev.bus_id, BUS_ID_SIZE,
-                         "tifm_%s%u:%u", tifm_media_type_name(type, 2),
-                         fm->id, id);
+                dev_set_name(&sock->dev, "tifm_%s%u:%u",
+                             tifm_media_type_name(type, 2), fm->id, id);
                 printk(KERN_INFO DRIVER_NAME
                        ": %s card detected in socket %u:%u\n",
                        tifm_media_type_name(type, 0), fm->id, id);
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 6659b2275c0c..5733f0643843 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -170,7 +170,7 @@ static int wait_till_ready(struct m25p *flash)
 static int erase_chip(struct m25p *flash)
 {
         DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %dKiB\n",
-                        flash->spi->dev.bus_id, __func__,
+                        dev_name(&flash->spi->dev), __func__,
                         flash->mtd.size / 1024);
 
         /* Wait until finished previous write command. */
@@ -197,7 +197,7 @@ static int erase_chip(struct m25p *flash)
 static int erase_sector(struct m25p *flash, u32 offset)
 {
         DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %dKiB at 0x%08x\n",
-                        flash->spi->dev.bus_id, __func__,
+                        dev_name(&flash->spi->dev), __func__,
                         flash->mtd.erasesize / 1024, offset);
 
         /* Wait until finished previous write command. */
@@ -234,7 +234,7 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr)
         u32 addr,len;
 
         DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %d\n",
-                        flash->spi->dev.bus_id, __func__, "at",
+                        dev_name(&flash->spi->dev), __func__, "at",
                         (u32)instr->addr, instr->len);
 
         /* sanity checks */
@@ -295,7 +295,7 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
         struct spi_message m;
 
         DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %zd\n",
-                        flash->spi->dev.bus_id, __func__, "from",
+                        dev_name(&flash->spi->dev), __func__, "from",
                         (u32)from, len);
 
         /* sanity checks */
@@ -367,7 +367,7 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len,
         struct spi_message m;
 
         DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %zd\n",
-                        flash->spi->dev.bus_id, __func__, "to",
+                        dev_name(&flash->spi->dev), __func__, "to",
                         (u32)to, len);
 
         if (retlen)
@@ -563,7 +563,7 @@ static struct flash_info *__devinit jedec_probe(struct spi_device *spi)
         tmp = spi_write_then_read(spi, &code, 1, id, 5);
         if (tmp < 0) {
                 DEBUG(MTD_DEBUG_LEVEL0, "%s: error %d reading JEDEC ID\n",
-                        spi->dev.bus_id, tmp);
+                        dev_name(&spi->dev), tmp);
                 return NULL;
         }
         jedec = id[0];
@@ -617,7 +617,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
                 /* unrecognized chip? */
                 if (i == ARRAY_SIZE(m25p_data)) {
                         DEBUG(MTD_DEBUG_LEVEL0, "%s: unrecognized id %s\n",
-                                        spi->dev.bus_id, data->type);
+                                        dev_name(&spi->dev), data->type);
                         info = NULL;
 
                 /* recognized; is that chip really what's there? */
@@ -658,7 +658,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
         if (data && data->name)
                 flash->mtd.name = data->name;
         else
-                flash->mtd.name = spi->dev.bus_id;
+                flash->mtd.name = dev_name(&spi->dev);
 
         flash->mtd.type = MTD_NORFLASH;
         flash->mtd.writesize = 1;
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index 6dd9aff8bb2d..65126cd668ff 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -128,7 +128,7 @@ static int dataflash_waitready(struct spi_device *spi)
                 status = dataflash_status(spi);
                 if (status < 0) {
                         DEBUG(MTD_DEBUG_LEVEL1, "%s: status %d?\n",
-                                        spi->dev.bus_id, status);
+                                        dev_name(&spi->dev), status);
                         status = 0;
                 }
 
@@ -154,7 +154,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
         uint8_t                 *command;
 
         DEBUG(MTD_DEBUG_LEVEL2, "%s: erase addr=0x%x len 0x%x\n",
-                        spi->dev.bus_id,
+                        dev_name(&spi->dev),
                         instr->addr, instr->len);
 
         /* Sanity checks */
@@ -197,7 +197,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
 
                 if (status < 0) {
                         printk(KERN_ERR "%s: erase %x, err %d\n",
-                                spi->dev.bus_id, pageaddr, status);
+                                dev_name(&spi->dev), pageaddr, status);
                         /* REVISIT:  can retry instr->retries times; or
                          * giveup and instr->fail_addr = instr->addr;
                          */
@@ -239,7 +239,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len,
         int                     status;
 
         DEBUG(MTD_DEBUG_LEVEL2, "%s: read 0x%x..0x%x\n",
-                priv->spi->dev.bus_id, (unsigned)from, (unsigned)(from + len));
+                dev_name(&priv->spi->dev), (unsigned)from, (unsigned)(from + len));
 
         *retlen = 0;
 
@@ -288,7 +288,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len,
                 status = 0;
         } else
                 DEBUG(MTD_DEBUG_LEVEL1, "%s: read %x..%x --> %d\n",
-                        priv->spi->dev.bus_id,
+                        dev_name(&priv->spi->dev),
                         (unsigned)from, (unsigned)(from + len),
                         status);
         return status;
@@ -315,7 +315,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
         uint8_t                 *command;
 
         DEBUG(MTD_DEBUG_LEVEL2, "%s: write 0x%x..0x%x\n",
-                spi->dev.bus_id, (unsigned)to, (unsigned)(to + len));
+                dev_name(&spi->dev), (unsigned)to, (unsigned)(to + len));
 
         *retlen = 0;
 
@@ -374,7 +374,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
                         status = spi_sync(spi, &msg);
                         if (status < 0)
                                 DEBUG(MTD_DEBUG_LEVEL1, "%s: xfer %u -> %d \n",
-                                        spi->dev.bus_id, addr, status);
+                                        dev_name(&spi->dev), addr, status);
 
                         (void) dataflash_waitready(priv->spi);
                 }
@@ -396,7 +396,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
                 spi_transfer_del(x + 1);
                 if (status < 0)
                         DEBUG(MTD_DEBUG_LEVEL1, "%s: pgm %u/%u -> %d \n",
-                                spi->dev.bus_id, addr, writelen, status);
+                                dev_name(&spi->dev), addr, writelen, status);
 
                 (void) dataflash_waitready(priv->spi);
 
@@ -416,14 +416,14 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
                 status = spi_sync(spi, &msg);
                 if (status < 0)
                         DEBUG(MTD_DEBUG_LEVEL1, "%s: compare %u -> %d \n",
-                                spi->dev.bus_id, addr, status);
+                                dev_name(&spi->dev), addr, status);
 
                 status = dataflash_waitready(priv->spi);
 
                 /* Check result of the compare operation */
                 if (status & (1 << 6)) {
                         printk(KERN_ERR "%s: compare page %u, err %d\n",
-                                spi->dev.bus_id, pageaddr, status);
+                                dev_name(&spi->dev), pageaddr, status);
                         remaining = 0;
                         status = -EIO;
                         break;
@@ -779,7 +779,7 @@ static struct flash_info *__devinit jedec_probe(struct spi_device *spi)
         tmp = spi_write_then_read(spi, &code, 1, id, 3);
         if (tmp < 0) {
                 DEBUG(MTD_DEBUG_LEVEL0, "%s: error %d reading JEDEC ID\n",
-                        spi->dev.bus_id, tmp);
+                        dev_name(&spi->dev), tmp);
                 return ERR_PTR(tmp);
         }
         if (id[0] != 0x1f)
@@ -869,7 +869,7 @@ static int __devinit dataflash_probe(struct spi_device *spi)
         status = dataflash_status(spi);
         if (status <= 0 || status == 0xff) {
                 DEBUG(MTD_DEBUG_LEVEL1, "%s: status error %d\n",
-                                spi->dev.bus_id, status);
+                                dev_name(&spi->dev), status);
                 if (status == 0 || status == 0xff)
                         status = -ENODEV;
                 return status;
@@ -905,13 +905,13 @@ static int __devinit dataflash_probe(struct spi_device *spi)
         /* obsolete AT45DB1282 not (yet?) supported */
         default:
                 DEBUG(MTD_DEBUG_LEVEL1, "%s: unsupported device (%x)\n",
-                                spi->dev.bus_id, status & 0x3c);
+                                dev_name(&spi->dev), status & 0x3c);
                 status = -ENODEV;
         }
 
         if (status < 0)
                 DEBUG(MTD_DEBUG_LEVEL1, "%s: add_dataflash --> %d\n",
-                                spi->dev.bus_id, status);
+                                dev_name(&spi->dev), status);
 
         return status;
 }
@@ -921,7 +921,7 @@ static int __devexit dataflash_remove(struct spi_device *spi)
         struct dataflash        *flash = dev_get_drvdata(&spi->dev);
         int                     status;
 
-        DEBUG(MTD_DEBUG_LEVEL1, "%s: remove\n", spi->dev.bus_id);
+        DEBUG(MTD_DEBUG_LEVEL1, "%s: remove\n", dev_name(&spi->dev));
 
         if (mtd_has_partitions() && flash->partitioned)
                 status = del_mtd_partitions(&flash->mtd);
diff --git a/drivers/mtd/maps/integrator-flash.c b/drivers/mtd/maps/integrator-flash.c
index 7100ee3c7b01..d2ec262666c7 100644
--- a/drivers/mtd/maps/integrator-flash.c
+++ b/drivers/mtd/maps/integrator-flash.c
@@ -105,7 +105,7 @@ static int armflash_probe(struct platform_device *dev)
         info->map.bankwidth     = plat->width;
         info->map.phys          = res->start;
         info->map.virt          = base;
-        info->map.name          = dev->dev.bus_id;
+        info->map.name          = dev_name(&dev->dev);
         info->map.set_vpp       = armflash_set_vpp;
 
         simple_map_init(&info->map);
diff --git a/drivers/mtd/maps/ixp2000.c b/drivers/mtd/maps/ixp2000.c
index 3ea1de9be720..d4fb9a3ab4df 100644
--- a/drivers/mtd/maps/ixp2000.c
+++ b/drivers/mtd/maps/ixp2000.c
@@ -188,7 +188,7 @@ static int ixp2000_flash_probe(struct platform_device *dev)
          */
         info->map.map_priv_2 = (unsigned long) ixp_data->bank_setup;
 
-        info->map.name = dev->dev.bus_id;
+        info->map.name = dev_name(&dev->dev);
         info->map.read = ixp2000_flash_read8;
         info->map.write = ixp2000_flash_write8;
         info->map.copy_from = ixp2000_flash_copy_from;
@@ -196,7 +196,7 @@ static int ixp2000_flash_probe(struct platform_device *dev)
 
         info->res = request_mem_region(dev->resource->start,
                         dev->resource->end - dev->resource->start + 1,
-                        dev->dev.bus_id);
+                        dev_name(&dev->dev));
         if (!info->res) {
                 dev_err(&dev->dev, "Could not reserve memory region\n");
                 err = -ENOMEM;
diff --git a/drivers/mtd/maps/ixp4xx.c b/drivers/mtd/maps/ixp4xx.c
index 16555cbeaea4..7214b876feba 100644
--- a/drivers/mtd/maps/ixp4xx.c
+++ b/drivers/mtd/maps/ixp4xx.c
@@ -218,7 +218,7 @@ static int ixp4xx_flash_probe(struct platform_device *dev)
          * handle that.
          */
         info->map.bankwidth = 2;
-        info->map.name = dev->dev.bus_id;
+        info->map.name = dev_name(&dev->dev);
         info->map.read = ixp4xx_read16,
         info->map.write = ixp4xx_probe_write16,
         info->map.copy_from = ixp4xx_copy_from,
diff --git a/drivers/mtd/maps/omap_nor.c b/drivers/mtd/maps/omap_nor.c
index 05f276af15da..7e50e9b1b781 100644
--- a/drivers/mtd/maps/omap_nor.c
+++ b/drivers/mtd/maps/omap_nor.c
@@ -101,7 +101,7 @@ static int __init omapflash_probe(struct platform_device *pdev)
                 err = -ENOMEM;
                 goto out_release_mem_region;
         }
-        info->map.name          = pdev->dev.bus_id;
+        info->map.name          = dev_name(&pdev->dev);
         info->map.phys          = res->start;
         info->map.size          = size;
         info->map.bankwidth     = pdata->width;
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index dfbf3f270cea..1db16e549e38 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -108,13 +108,13 @@ static int physmap_flash_probe(struct platform_device *dev)
                 if (!devm_request_mem_region(&dev->dev,
                         dev->resource[i].start,
                         dev->resource[i].end - dev->resource[i].start + 1,
-                        dev->dev.bus_id)) {
+                        dev_name(&dev->dev))) {
                         dev_err(&dev->dev, "Could not reserve memory region\n");
                         err = -ENOMEM;
                         goto err_out;
                 }
 
-                info->map[i].name = dev->dev.bus_id;
+                info->map[i].name = dev_name(&dev->dev);
                 info->map[i].phys = dev->resource[i].start;
                 info->map[i].size = dev->resource[i].end - dev->resource[i].start + 1;
                 info->map[i].bankwidth = physmap_data->width;
@@ -150,7 +150,7 @@ static int physmap_flash_probe(struct platform_device *dev)
                  * We detected multiple devices. Concatenate them together.
                  */
 #ifdef CONFIG_MTD_CONCAT
-                info->cmtd = mtd_concat_create(info->mtd, devices_found, dev->dev.bus_id);
+                info->cmtd = mtd_concat_create(info->mtd, devices_found, dev_name(&dev->dev));
                 if (info->cmtd == NULL)
                         err = -ENXIO;
 #else
diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c
index 5fcfec034a94..fbf0ca939d72 100644
--- a/drivers/mtd/maps/physmap_of.c
+++ b/drivers/mtd/maps/physmap_of.c
@@ -183,7 +183,7 @@ static int __devinit of_flash_probe(struct of_device *dev,
 
         err = -EBUSY;
         info->res = request_mem_region(res.start, res.end - res.start + 1,
-                                       dev->dev.bus_id);
+                                       dev_name(&dev->dev));
         if (!info->res)
                 goto err_out;
 
@@ -194,7 +194,7 @@ static int __devinit of_flash_probe(struct of_device *dev,
                 goto err_out;
         }
 
-        info->map.name = dev->dev.bus_id;
+        info->map.name = dev_name(&dev->dev);
         info->map.phys = res.start;
         info->map.size = res.end - res.start + 1;
         info->map.bankwidth = *width;
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 789842d0e6f2..1a05cf37851e 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -691,7 +691,7 @@ static int concat_block_markbad(struct mtd_info *mtd, loff_t ofs)
  */
 struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],   /* subdevices to concatenate */
                                    int num_devs,        /* number of subdevices      */
-                                   char *name)
+                                   const char *name)
 {                               /* name for the new device   */
         int i;
         size_t size;
diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c
index a83192f80eba..7815a404a632 100644
--- a/drivers/mtd/nand/fsl_upm.c
+++ b/drivers/mtd/nand/fsl_upm.c
@@ -222,7 +222,7 @@ static int __devinit fun_probe(struct of_device *ofdev,
 
         fun->rnb_gpio = of_get_gpio(ofdev->node, 0);
         if (fun->rnb_gpio >= 0) {
-                ret = gpio_request(fun->rnb_gpio, ofdev->dev.bus_id);
+                ret = gpio_request(fun->rnb_gpio, dev_name(&ofdev->dev));
                 if (ret) {
                         dev_err(&ofdev->dev, "can't request RNB gpio\n");
                         goto err2;
diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c
index f674c5427b17..75f9f4874ecf 100644
--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -54,7 +54,7 @@ static int __init plat_nand_probe(struct platform_device *pdev)
         data->chip.priv = &data;
         data->mtd.priv = &data->chip;
         data->mtd.owner = THIS_MODULE;
-        data->mtd.name = pdev->dev.bus_id;
+        data->mtd.name = dev_name(&pdev->dev);
 
         data->chip.IO_ADDR_R = data->io_base;
         data->chip.IO_ADDR_W = data->io_base;
diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c
index edb1e322113d..daa6a4c3b8ce 100644
--- a/drivers/mtd/nand/tmio_nand.c
+++ b/drivers/mtd/nand/tmio_nand.c
@@ -433,7 +433,7 @@ static int tmio_probe(struct platform_device *dev)
         nand_chip->chip_delay = 15;
 
         retval = request_irq(irq, &tmio_irq,
-                                IRQF_DISABLED, dev->dev.bus_id, tmio);
+                                IRQF_DISABLED, dev_name(&dev->dev), tmio);
         if (retval) {
                 dev_err(&dev->dev, "request_irq error %d\n", retval);
                 goto err_irq;
diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c
index ad81ab8e95e2..5b69e7773c6c 100644
--- a/drivers/mtd/onenand/generic.c
+++ b/drivers/mtd/onenand/generic.c
@@ -63,7 +63,7 @@ static int __devinit generic_onenand_probe(struct device *dev)
         info->onenand.mmcontrol = pdata->mmcontrol;
         info->onenand.irq = platform_get_irq(pdev, 0);
 
-        info->mtd.name = pdev->dev.bus_id;
+        info->mtd.name = dev_name(&pdev->dev);
         info->mtd.priv = &info->onenand;
         info->mtd.owner = THIS_MODULE;
 
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index d1e0b8e7224b..96ecc1766fa8 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -668,7 +668,7 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
                  c->onenand.base);
 
         c->pdev = pdev;
-        c->mtd.name = pdev->dev.bus_id;
+        c->mtd.name = dev_name(&pdev->dev);
         c->mtd.priv = &c->onenand;
         c->mtd.owner = THIS_MODULE;
 
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index ba0bd3d5775b..7caf22cd5ad0 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -280,7 +280,7 @@ static int ubi_sysfs_init(struct ubi_device *ubi)
         ubi->dev.release = dev_release;
         ubi->dev.devt = ubi->cdev.dev;
         ubi->dev.class = ubi_class;
-        sprintf(&ubi->dev.bus_id[0], UBI_NAME_STR"%d", ubi->ubi_num);
+        dev_set_name(&ubi->dev, UBI_NAME_STR"%d", ubi->ubi_num);
         err = device_register(&ubi->dev);
         if (err)
                 return err;
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 3531ca9a1e24..22e1d7398fce 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -329,7 +329,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
         vol->dev.devt = dev;
         vol->dev.class = ubi_class;
 
-        sprintf(&vol->dev.bus_id[0], "%s_%d", ubi->ubi_name, vol->vol_id);
+        dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
         err = device_register(&vol->dev);
         if (err) {
                 ubi_err("cannot register device");
@@ -678,7 +678,7 @@ int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol)
         vol->dev.parent = &ubi->dev;
         vol->dev.devt = dev;
         vol->dev.class = ubi_class;
-        sprintf(&vol->dev.bus_id[0], "%s_%d", ubi->ubi_name, vol->vol_id);
+        dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
         err = device_register(&vol->dev);
         if (err)
                 goto out_gluebi;
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index b4cdd690ae71..99d867bcf22a 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -300,6 +300,14 @@ static void pci_device_shutdown(struct device *dev)
 
 #ifdef CONFIG_PM_SLEEP
 
+static bool pci_has_legacy_pm_support(struct pci_dev *pci_dev)
+{
+        struct pci_driver *drv = pci_dev->driver;
+
+        return drv && (drv->suspend || drv->suspend_late || drv->resume
+                || drv->resume_early);
+}
+
 /*
  * Default "suspend" method for devices that have no driver provided suspend,
  * or not even a driver at all.
@@ -317,14 +325,22 @@ static void pci_default_pm_suspend(struct pci_dev *pci_dev)
 
 /*
  * Default "resume" method for devices that have no driver provided resume,
- * or not even a driver at all.
+ * or not even a driver at all (first part).
  */
-static int pci_default_pm_resume(struct pci_dev *pci_dev)
+static void pci_default_pm_resume_early(struct pci_dev *pci_dev)
 {
-        int retval = 0;
-
         /* restore the PCI config space */
         pci_restore_state(pci_dev);
+}
+
+/*
+ * Default "resume" method for devices that have no driver provided resume,
+ * or not even a driver at all (second part).
+ */
+static int pci_default_pm_resume_late(struct pci_dev *pci_dev)
+{
+        int retval;
+
         /* if the device was enabled before suspend, reenable */
         retval = pci_reenable_device(pci_dev);
         /*
@@ -371,10 +387,12 @@ static int pci_legacy_resume(struct device *dev)
         struct pci_dev * pci_dev = to_pci_dev(dev);
         struct pci_driver * drv = pci_dev->driver;
 
-        if (drv && drv->resume)
+        if (drv && drv->resume) {
                 error = drv->resume(pci_dev);
-        else
-                error = pci_default_pm_resume(pci_dev);
+        } else {
+                pci_default_pm_resume_early(pci_dev);
+                error = pci_default_pm_resume_late(pci_dev);
+        }
         return error;
 }
 
@@ -420,10 +438,8 @@ static int pci_pm_suspend(struct device *dev)
                 if (drv->pm->suspend) {
                         error = drv->pm->suspend(dev);
                         suspend_report_result(drv->pm->suspend, error);
-                } else {
-                        pci_default_pm_suspend(pci_dev);
                 }
-        } else {
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
                 error = pci_legacy_suspend(dev, PMSG_SUSPEND);
         }
         pci_fixup_device(pci_fixup_suspend, pci_dev);
@@ -434,7 +450,7 @@ static int pci_pm_suspend(struct device *dev)
 static int pci_pm_suspend_noirq(struct device *dev)
 {
         struct pci_dev *pci_dev = to_pci_dev(dev);
-        struct pci_driver *drv = pci_dev->driver;
+        struct device_driver *drv = dev->driver;
         int error = 0;
 
         if (drv && drv->pm) {
@@ -442,8 +458,10 @@ static int pci_pm_suspend_noirq(struct device *dev)
                         error = drv->pm->suspend_noirq(dev);
                         suspend_report_result(drv->pm->suspend_noirq, error);
                 }
-        } else {
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
                 error = pci_legacy_suspend_late(dev, PMSG_SUSPEND);
+        } else {
+                pci_default_pm_suspend(pci_dev);
         }
 
         return error;
@@ -453,15 +471,17 @@ static int pci_pm_resume(struct device *dev)
 {
         struct pci_dev *pci_dev = to_pci_dev(dev);
         struct device_driver *drv = dev->driver;
-        int error;
+        int error = 0;
 
         pci_fixup_device(pci_fixup_resume, pci_dev);
 
         if (drv && drv->pm) {
-                error = drv->pm->resume ? drv->pm->resume(dev) :
-                        pci_default_pm_resume(pci_dev);
-        } else {
+                if (drv->pm->resume)
+                        error = drv->pm->resume(dev);
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
                 error = pci_legacy_resume(dev);
+        } else {
+                error = pci_default_pm_resume_late(pci_dev);
         }
 
         return error;
@@ -470,16 +490,18 @@ static int pci_pm_resume(struct device *dev)
 static int pci_pm_resume_noirq(struct device *dev)
 {
         struct pci_dev *pci_dev = to_pci_dev(dev);
-        struct pci_driver *drv = pci_dev->driver;
+        struct device_driver *drv = dev->driver;
         int error = 0;
 
-        pci_fixup_device(pci_fixup_resume_early, pci_dev);
+        pci_fixup_device(pci_fixup_resume_early, to_pci_dev(dev));
 
         if (drv && drv->pm) {
                 if (drv->pm->resume_noirq)
                         error = drv->pm->resume_noirq(dev);
-        } else {
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
                 error = pci_legacy_resume_early(dev);
+        } else {
+                pci_default_pm_resume_early(pci_dev);
         }
 
         return error;
@@ -506,10 +528,8 @@ static int pci_pm_freeze(struct device *dev)
                 if (drv->pm->freeze) {
                         error = drv->pm->freeze(dev);
                         suspend_report_result(drv->pm->freeze, error);
-                } else {
-                        pci_default_pm_suspend(pci_dev);
                 }
-        } else {
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
                 error = pci_legacy_suspend(dev, PMSG_FREEZE);
                 pci_fixup_device(pci_fixup_suspend, pci_dev);
         }
@@ -520,7 +540,7 @@ static int pci_pm_freeze(struct device *dev)
 static int pci_pm_freeze_noirq(struct device *dev)
 {
         struct pci_dev *pci_dev = to_pci_dev(dev);
-        struct pci_driver *drv = pci_dev->driver;
+        struct device_driver *drv = dev->driver;
         int error = 0;
 
         if (drv && drv->pm) {
@@ -528,8 +548,10 @@ static int pci_pm_freeze_noirq(struct device *dev)
                         error = drv->pm->freeze_noirq(dev);
                         suspend_report_result(drv->pm->freeze_noirq, error);
                 }
-        } else {
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
                 error = pci_legacy_suspend_late(dev, PMSG_FREEZE);
+        } else {
+                pci_default_pm_suspend(pci_dev);
         }
 
         return error;
@@ -537,14 +559,15 @@ static int pci_pm_freeze_noirq(struct device *dev)
 
 static int pci_pm_thaw(struct device *dev)
 {
+        struct pci_dev *pci_dev = to_pci_dev(dev);
         struct device_driver *drv = dev->driver;
         int error = 0;
 
         if (drv && drv->pm) {
                 if (drv->pm->thaw)
                         error =  drv->pm->thaw(dev);
-        } else {
-                pci_fixup_device(pci_fixup_resume, to_pci_dev(dev));
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
+                pci_fixup_device(pci_fixup_resume, pci_dev);
                 error = pci_legacy_resume(dev);
         }
 
@@ -554,14 +577,14 @@ static int pci_pm_thaw(struct device *dev)
 static int pci_pm_thaw_noirq(struct device *dev)
 {
         struct pci_dev *pci_dev = to_pci_dev(dev);
-        struct pci_driver *drv = pci_dev->driver;
+        struct device_driver *drv = dev->driver;
         int error = 0;
 
         if (drv && drv->pm) {
                 if (drv->pm->thaw_noirq)
                         error = drv->pm->thaw_noirq(dev);
-        } else {
-                pci_fixup_device(pci_fixup_resume_early, pci_dev);
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
+                pci_fixup_device(pci_fixup_resume_early, to_pci_dev(dev));
                 error = pci_legacy_resume_early(dev);
         }
 
@@ -570,17 +593,18 @@ static int pci_pm_thaw_noirq(struct device *dev)
 
 static int pci_pm_poweroff(struct device *dev)
 {
+        struct pci_dev *pci_dev = to_pci_dev(dev);
         struct device_driver *drv = dev->driver;
         int error = 0;
 
-        pci_fixup_device(pci_fixup_suspend, to_pci_dev(dev));
+        pci_fixup_device(pci_fixup_suspend, pci_dev);
 
         if (drv && drv->pm) {
                 if (drv->pm->poweroff) {
                         error = drv->pm->poweroff(dev);
                         suspend_report_result(drv->pm->poweroff, error);
                 }
-        } else {
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
                 error = pci_legacy_suspend(dev, PMSG_HIBERNATE);
         }
 
@@ -589,8 +613,7 @@ static int pci_pm_poweroff(struct device *dev)
 
 static int pci_pm_poweroff_noirq(struct device *dev)
 {
-        struct pci_dev *pci_dev = to_pci_dev(dev);
-        struct pci_driver *drv = pci_dev->driver;
+        struct device_driver *drv = dev->driver;
         int error = 0;
 
         if (drv && drv->pm) {
@@ -598,7 +621,7 @@ static int pci_pm_poweroff_noirq(struct device *dev)
                         error = drv->pm->poweroff_noirq(dev);
                         suspend_report_result(drv->pm->poweroff_noirq, error);
                 }
-        } else {
+        } else if (pci_has_legacy_pm_support(to_pci_dev(dev))) {
                 error = pci_legacy_suspend_late(dev, PMSG_HIBERNATE);
         }
 
@@ -609,13 +632,15 @@ static int pci_pm_restore(struct device *dev)
 {
         struct pci_dev *pci_dev = to_pci_dev(dev);
         struct device_driver *drv = dev->driver;
-        int error;
+        int error = 0;
 
         if (drv && drv->pm) {
-                error = drv->pm->restore ? drv->pm->restore(dev) :
-                        pci_default_pm_resume(pci_dev);
-        } else {
+                if (drv->pm->restore)
+                        error = drv->pm->restore(dev);
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
                 error = pci_legacy_resume(dev);
+        } else {
+                error = pci_default_pm_resume_late(pci_dev);
         }
         pci_fixup_device(pci_fixup_resume, pci_dev);
 
@@ -625,7 +650,7 @@ static int pci_pm_restore(struct device *dev)
 static int pci_pm_restore_noirq(struct device *dev)
 {
         struct pci_dev *pci_dev = to_pci_dev(dev);
-        struct pci_driver *drv = pci_dev->driver;
+        struct device_driver *drv = dev->driver;
         int error = 0;
 
         pci_fixup_device(pci_fixup_resume, pci_dev);
@@ -633,8 +658,10 @@ static int pci_pm_restore_noirq(struct device *dev)
         if (drv && drv->pm) {
                 if (drv->pm->restore_noirq)
                         error = drv->pm->restore_noirq(dev);
-        } else {
+        } else if (pci_has_legacy_pm_support(pci_dev)) {
                 error = pci_legacy_resume_early(dev);
+        } else {
+                pci_default_pm_resume_early(pci_dev);
         }
         pci_fixup_device(pci_fixup_resume_early, pci_dev);
 
@@ -654,17 +681,15 @@ static int pci_pm_restore_noirq(struct device *dev)
 
 #endif /* !CONFIG_HIBERNATION */
 
-struct pm_ext_ops pci_pm_ops = {
-        .base = {
-                .prepare = pci_pm_prepare,
-                .complete = pci_pm_complete,
-                .suspend = pci_pm_suspend,
-                .resume = pci_pm_resume,
-                .freeze = pci_pm_freeze,
-                .thaw = pci_pm_thaw,
-                .poweroff = pci_pm_poweroff,
-                .restore = pci_pm_restore,
-        },
+struct dev_pm_ops pci_dev_pm_ops = {
+        .prepare = pci_pm_prepare,
+        .complete = pci_pm_complete,
+        .suspend = pci_pm_suspend,
+        .resume = pci_pm_resume,
+        .freeze = pci_pm_freeze,
+        .thaw = pci_pm_thaw,
+        .poweroff = pci_pm_poweroff,
+        .restore = pci_pm_restore,
         .suspend_noirq = pci_pm_suspend_noirq,
         .resume_noirq = pci_pm_resume_noirq,
         .freeze_noirq = pci_pm_freeze_noirq,
@@ -673,7 +698,7 @@ struct pm_ext_ops pci_pm_ops = {
         .restore_noirq = pci_pm_restore_noirq,
 };
 
-#define PCI_PM_OPS_PTR  &pci_pm_ops
+#define PCI_PM_OPS_PTR  (&pci_dev_pm_ops)
 
 #else /* !CONFIG_PM_SLEEP */
 
@@ -703,9 +728,6 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
         drv->driver.owner = owner;
         drv->driver.mod_name = mod_name;
 
-        if (drv->pm)
-                drv->driver.pm = &drv->pm->base;
-
         spin_lock_init(&drv->dynids.lock);
         INIT_LIST_HEAD(&drv->dynids.list);
 
diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c
index e75b060daa95..efea128f02da 100644
--- a/drivers/pnp/card.c
+++ b/drivers/pnp/card.c
@@ -165,8 +165,7 @@ struct pnp_card *pnp_alloc_card(struct pnp_protocol *protocol, int id, char *pnp
         card->number = id;
 
         card->dev.parent = &card->protocol->dev;
-        sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number,
-                card->number);
+        dev_set_name(&card->dev, "%02x:%02x", card->protocol->number, card->number);
 
         card->dev.coherent_dma_mask = DMA_24BIT_MASK;
         card->dev.dma_mask = &card->dev.coherent_dma_mask;
@@ -295,8 +294,8 @@ int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev)
 {
         dev->dev.parent = &card->dev;
         dev->card_link = NULL;
-        snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%02x:%02x.%02x",
-                 dev->protocol->number, card->number, dev->number);
+        dev_set_name(&dev->dev, "%02x:%02x.%02x",
+                     dev->protocol->number, card->number, dev->number);
         spin_lock(&pnp_lock);
         dev->card = card;
         list_add_tail(&dev->card_list, &card->devices);
diff --git a/drivers/pnp/core.c b/drivers/pnp/core.c
index 16c01c6fa7c5..14814f231739 100644
--- a/drivers/pnp/core.c
+++ b/drivers/pnp/core.c
@@ -70,7 +70,7 @@ int pnp_register_protocol(struct pnp_protocol *protocol)
         spin_unlock(&pnp_lock);
 
         protocol->number = nodenum;
-        sprintf(protocol->dev.bus_id, "pnp%d", nodenum);
+        dev_set_name(&protocol->dev, "pnp%d", nodenum);
         return device_register(&protocol->dev);
 }
 
@@ -145,8 +145,7 @@ struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *protocol, int id, char *pnpid
         dev->dev.coherent_dma_mask = dev->dma_mask;
         dev->dev.release = &pnp_release_device;
 
-        sprintf(dev->dev.bus_id, "%02x:%02x", dev->protocol->number,
-                dev->number);
+        dev_set_name(&dev->dev, "%02x:%02x", dev->protocol->number, dev->number);
 
         dev_id = pnp_add_id(dev, pnpid);
         if (!dev_id) {
diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c
index 764f3a310685..59b90922da8c 100644
--- a/drivers/pnp/system.c
+++ b/drivers/pnp/system.c
@@ -26,7 +26,7 @@ static void reserve_range(struct pnp_dev *dev, resource_size_t start,
                           resource_size_t end, int port)
 {
         char *regionid;
-        const char *pnpid = dev->dev.bus_id;
+        const char *pnpid = dev_name(&dev->dev);
         struct resource *res;
 
         regionid = kmalloc(16, GFP_KERNEL);
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index 308ddb201b66..1d768928e0bb 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -354,7 +354,7 @@ static int ds2760_battery_probe(struct platform_device *pdev)
         pdata = pdev->dev.platform_data;
         di->dev         = &pdev->dev;
         di->w1_dev           = pdev->dev.parent;
-        di->bat.name       = pdev->dev.bus_id;
+        di->bat.name       = dev_name(&pdev->dev);
         di->bat.type       = POWER_SUPPLY_TYPE_BATTERY;
         di->bat.properties     = ds2760_battery_props;
         di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
@@ -371,7 +371,7 @@ static int ds2760_battery_probe(struct platform_device *pdev)
         }
 
         INIT_DELAYED_WORK(&di->monitor_work, ds2760_battery_work);
-        di->monitor_wqueue = create_singlethread_workqueue(pdev->dev.bus_id);
+        di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
         if (!di->monitor_wqueue) {
                 retval = -ESRCH;
                 goto workqueue_failed;
diff --git a/drivers/s390/Makefile b/drivers/s390/Makefile
index 4f4e7cf105d4..d0eae59bc366 100644
--- a/drivers/s390/Makefile
+++ b/drivers/s390/Makefile
@@ -4,7 +4,7 @@
 
 CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
 
-obj-y += s390mach.o sysinfo.o s390_rdev.o
+obj-y += s390mach.o sysinfo.o
 obj-y += cio/ block/ char/ crypto/ net/ scsi/ kvm/
 
 drivers-y += drivers/s390/built-in.o
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 26ffc6ab441d..cfdcf1aed33c 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -18,7 +18,6 @@
 #include <asm/io.h>
 #include <linux/completion.h>
 #include <linux/interrupt.h>
-#include <asm/s390_rdev.h>
 
 #define DCSSBLK_NAME "dcssblk"
 #define DCSSBLK_MINORS_PER_DISK 1
@@ -946,7 +945,7 @@ dcssblk_check_params(void)
 static void __exit
 dcssblk_exit(void)
 {
-        s390_root_dev_unregister(dcssblk_root_dev);
+        root_device_unregister(dcssblk_root_dev);
         unregister_blkdev(dcssblk_major, DCSSBLK_NAME);
 }
 
@@ -955,22 +954,22 @@ dcssblk_init(void)
 {
         int rc;
 
-        dcssblk_root_dev = s390_root_dev_register("dcssblk");
+        dcssblk_root_dev = root_device_register("dcssblk");
         if (IS_ERR(dcssblk_root_dev))
                 return PTR_ERR(dcssblk_root_dev);
         rc = device_create_file(dcssblk_root_dev, &dev_attr_add);
         if (rc) {
-                s390_root_dev_unregister(dcssblk_root_dev);
+                root_device_unregister(dcssblk_root_dev);
                 return rc;
         }
         rc = device_create_file(dcssblk_root_dev, &dev_attr_remove);
         if (rc) {
-                s390_root_dev_unregister(dcssblk_root_dev);
+                root_device_unregister(dcssblk_root_dev);
                 return rc;
         }
         rc = register_blkdev(0, DCSSBLK_NAME);
         if (rc < 0) {
-                s390_root_dev_unregister(dcssblk_root_dev);
+                root_device_unregister(dcssblk_root_dev);
                 return rc;
         }
         dcssblk_major = rc;
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 1f5f5d2d87d9..9c148406b980 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -36,7 +36,6 @@
 #include <linux/notifier.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
-#include <asm/s390_rdev.h>
 #include <asm/reset.h>
 #include <asm/airq.h>
 #include <asm/atomic.h>
@@ -1522,7 +1521,7 @@ int __init ap_module_init(void)
         }
 
         /* Create /sys/devices/ap. */
-        ap_root_device = s390_root_dev_register("ap");
+        ap_root_device = root_device_register("ap");
         rc = IS_ERR(ap_root_device) ? PTR_ERR(ap_root_device) : 0;
         if (rc)
                 goto out_bus;
@@ -1565,7 +1564,7 @@ out_work:
         hrtimer_cancel(&ap_poll_timer);
         destroy_workqueue(ap_work_queue);
 out_root:
-        s390_root_dev_unregister(ap_root_device);
+        root_device_unregister(ap_root_device);
 out_bus:
         while (i--)
                 bus_remove_file(&ap_bus_type, ap_bus_attrs[i]);
@@ -1600,7 +1599,7 @@ void ap_module_exit(void)
         hrtimer_cancel(&ap_poll_timer);
         destroy_workqueue(ap_work_queue);
         tasklet_kill(&ap_tasklet);
-        s390_root_dev_unregister(ap_root_device);
+        root_device_unregister(ap_root_device);
         while ((dev = bus_find_device(&ap_bus_type, NULL, NULL,
                     __ap_match_all)))
         {
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 28c90b89f2b4..cbc8566fab70 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -24,7 +24,6 @@
 #include <asm/kvm_virtio.h>
 #include <asm/setup.h>
 #include <asm/s390_ext.h>
-#include <asm/s390_rdev.h>
 
 #define VIRTIO_SUBCODE_64 0x0D00
 
@@ -335,7 +334,7 @@ static int __init kvm_devices_init(void)
         if (!MACHINE_IS_KVM)
                 return -ENODEV;
 
-        kvm_root = s390_root_dev_register("kvm_s390");
+        kvm_root = root_device_register("kvm_s390");
         if (IS_ERR(kvm_root)) {
                 rc = PTR_ERR(kvm_root);
                 printk(KERN_ERR "Could not register kvm_s390 root device");
@@ -344,7 +343,7 @@ static int __init kvm_devices_init(void)
 
         rc = vmem_add_mapping(real_memory_size, PAGE_SIZE);
         if (rc) {
-                s390_root_dev_unregister(kvm_root);
+                root_device_unregister(kvm_root);
                 return rc;
         }
 
diff --git a/drivers/s390/net/cu3088.c b/drivers/s390/net/cu3088.c
index f4a32375c037..48383459e99b 100644
--- a/drivers/s390/net/cu3088.c
+++ b/drivers/s390/net/cu3088.c
@@ -25,7 +25,6 @@
 #include <linux/module.h>
 #include <linux/err.h>
 
-#include <asm/s390_rdev.h>
 #include <asm/ccwdev.h>
 #include <asm/ccwgroup.h>
 
@@ -120,12 +119,12 @@ cu3088_init (void)
 {
         int rc;
 
-        cu3088_root_dev = s390_root_dev_register("cu3088");
+        cu3088_root_dev = root_device_register("cu3088");
         if (IS_ERR(cu3088_root_dev))
                 return PTR_ERR(cu3088_root_dev);
         rc = ccw_driver_register(&cu3088_driver);
         if (rc)
-                s390_root_dev_unregister(cu3088_root_dev);
+                root_device_unregister(cu3088_root_dev);
 
         return rc;
 }
@@ -134,7 +133,7 @@ static void __exit
 cu3088_exit (void)
 {
         ccw_driver_unregister(&cu3088_driver);
-        s390_root_dev_unregister(cu3088_root_dev);
+        root_device_unregister(cu3088_root_dev);
 }
 
 MODULE_DEVICE_TABLE(ccw,cu3088_ids);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 6811dd529f48..d1b5bebea7fb 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -24,7 +24,6 @@
 
 #include <asm/ebcdic.h>
 #include <asm/io.h>
-#include <asm/s390_rdev.h>
 
 #include "qeth_core.h"
 #include "qeth_core_offl.h"
@@ -4525,7 +4524,7 @@ static int __init qeth_core_init(void)
                                 &driver_attr_group);
         if (rc)
                 goto driver_err;
-        qeth_core_root_dev = s390_root_dev_register("qeth");
+        qeth_core_root_dev = root_device_register("qeth");
         rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
         if (rc)
                 goto register_err;
@@ -4539,7 +4538,7 @@ static int __init qeth_core_init(void)
 
         return 0;
 slab_err:
-        s390_root_dev_unregister(qeth_core_root_dev);
+        root_device_unregister(qeth_core_root_dev);
 register_err:
         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
                            &driver_attr_group);
@@ -4557,7 +4556,7 @@ out_err:
 
 static void __exit qeth_core_exit(void)
 {
-        s390_root_dev_unregister(qeth_core_root_dev);
+        root_device_unregister(qeth_core_root_dev);
         driver_remove_file(&qeth_core_ccwgroup_driver.driver,
                            &driver_attr_group);
         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 21627ba3093b..591a2b3ae4cb 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -20,8 +20,6 @@
 #include <linux/mii.h>
 #include <linux/ip.h>
 
-#include <asm/s390_rdev.h>
-
 #include "qeth_core.h"
 #include "qeth_core_offl.h"
 
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index cfda1ecffdf2..4693ee4e7b98 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -26,8 +26,6 @@
 #include <net/ip.h>
 #include <net/arp.h>
 
-#include <asm/s390_rdev.h>
-
 #include "qeth_l3.h"
 #include "qeth_core_offl.h"
 
diff --git a/drivers/s390/s390_rdev.c b/drivers/s390/s390_rdev.c
deleted file mode 100644
index 64371c05a3b3..000000000000
--- a/drivers/s390/s390_rdev.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- *  drivers/s390/s390_rdev.c
- *  s390 root device
- *
- *    Copyright (C) 2002, 2005 IBM Deutschland Entwicklung GmbH,
- *                       IBM Corporation
- *    Author(s): Cornelia Huck (cornelia.huck@de.ibm.com)
- *                Carsten Otte  (cotte@de.ibm.com)
- */
-
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/device.h>
-#include <asm/s390_rdev.h>
-
-static void
-s390_root_dev_release(struct device *dev)
-{
-        kfree(dev);
-}
-
-struct device *
-s390_root_dev_register(const char *name)
-{
-        struct device *dev;
-        int ret;
-
-        if (!strlen(name))
-                return ERR_PTR(-EINVAL);
-        dev = kzalloc(sizeof(struct device), GFP_KERNEL);
-        if (!dev)
-                return ERR_PTR(-ENOMEM);
-        dev_set_name(dev, name);
-        dev->release = s390_root_dev_release;
-        ret = device_register(dev);
-        if (ret) {
-                kfree(dev);
-                return ERR_PTR(ret);
-        }
-        return dev;
-}
-
-void
-s390_root_dev_unregister(struct device *dev)
-{
-        if (dev)
-                device_unregister(dev);
-}
-
-EXPORT_SYMBOL(s390_root_dev_register);
-EXPORT_SYMBOL(s390_root_dev_unregister);
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index dc68b7e0c930..42f4e66fccaf 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -2030,7 +2030,7 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port)
                 if (!tries)
                         printk(KERN_ERR "%s%s%s%d: Unable to drain "
                                         "transmitter\n",
-                               port->dev ? port->dev->bus_id : "",
+                               port->dev ? dev_name(port->dev) : "",
                                port->dev ? ": " : "",
                                drv->dev_name,
                                drv->tty_driver->name_base + port->line);
@@ -2156,7 +2156,7 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port)
         }
 
         printk(KERN_INFO "%s%s%s%d at %s (irq = %d) is a %s\n",
-               port->dev ? port->dev->bus_id : "",
+               port->dev ? dev_name(port->dev) : "",
                port->dev ? ": " : "",
                drv->dev_name,
                drv->tty_driver->name_base + port->line,
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 3734dc9708e1..643908b74bc0 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -47,7 +47,7 @@ modalias_show(struct device *dev, struct device_attribute *a, char *buf)
 {
         const struct spi_device *spi = to_spi_device(dev);
 
-        return snprintf(buf, BUS_ID_SIZE + 1, "%s\n", spi->modalias);
+        return sprintf(buf, "%s\n", spi->modalias);
 }
 
 static struct device_attribute spi_dev_attrs[] = {
@@ -63,7 +63,7 @@ static int spi_match_device(struct device *dev, struct device_driver *drv)
 {
         const struct spi_device *spi = to_spi_device(dev);
 
-        return strncmp(spi->modalias, drv->name, BUS_ID_SIZE) == 0;
+        return strcmp(spi->modalias, drv->name) == 0;
 }
 
 static int spi_uevent(struct device *dev, struct kobj_uevent_env *env)
@@ -243,8 +243,7 @@ int spi_add_device(struct spi_device *spi)
         }
 
         /* Set the bus ID string */
-        snprintf(spi->dev.bus_id, sizeof spi->dev.bus_id,
-                        "%s.%u", spi->master->dev.bus_id,
+        dev_set_name(&spi->dev, "%s.%u", dev_name(&spi->master->dev),
                         spi->chip_select);
 
 
@@ -254,7 +253,7 @@ int spi_add_device(struct spi_device *spi)
          */
         mutex_lock(&spi_add_lock);
 
-        if (bus_find_device_by_name(&spi_bus_type, NULL, spi->dev.bus_id)
+        if (bus_find_device_by_name(&spi_bus_type, NULL, dev_name(&spi->dev))
                         != NULL) {
                 dev_err(dev, "chipselect %d already in use\n",
                                 spi->chip_select);
@@ -269,7 +268,7 @@ int spi_add_device(struct spi_device *spi)
         status = spi->master->setup(spi);
         if (status < 0) {
                 dev_err(dev, "can't %s %s, status %d\n",
-                                "setup", spi->dev.bus_id, status);
+                                "setup", dev_name(&spi->dev), status);
                 goto done;
         }
 
@@ -277,9 +276,9 @@ int spi_add_device(struct spi_device *spi)
         status = device_add(&spi->dev);
         if (status < 0)
                 dev_err(dev, "can't %s %s, status %d\n",
-                                "add", spi->dev.bus_id, status);
+                                "add", dev_name(&spi->dev), status);
         else
-                dev_dbg(dev, "registered child %s\n", spi->dev.bus_id);
+                dev_dbg(dev, "registered child %s\n", dev_name(&spi->dev));
 
 done:
         mutex_unlock(&spi_add_lock);
@@ -504,12 +503,11 @@ int spi_register_master(struct spi_master *master)
         /* register the device, then userspace will see it.
          * registration fails if the bus ID is in use.
          */
-        snprintf(master->dev.bus_id, sizeof master->dev.bus_id,
-                "spi%u", master->bus_num);
+        dev_set_name(&master->dev, "spi%u", master->bus_num);
         status = device_add(&master->dev);
         if (status < 0)
                 goto done;
-        dev_dbg(dev, "registered master %s%s\n", master->dev.bus_id,
+        dev_dbg(dev, "registered master %s%s\n", dev_name(&master->dev),
                         dynamic ? " (dynamic)" : "");
 
         /* populate children from any spi device tables */
diff --git a/drivers/spi/spi_bitbang.c b/drivers/spi/spi_bitbang.c
index 96cc39ecb6e2..85e61f451218 100644
--- a/drivers/spi/spi_bitbang.c
+++ b/drivers/spi/spi_bitbang.c
@@ -475,7 +475,7 @@ int spi_bitbang_start(struct spi_bitbang *bitbang)
         /* this task is the only thing to touch the SPI bits */
         bitbang->busy = 0;
         bitbang->workqueue = create_singlethread_workqueue(
-                        bitbang->master->dev.parent->bus_id);
+                        dev_name(bitbang->master->dev.parent));
         if (bitbang->workqueue == NULL) {
                 status = -EBUSY;
                 goto err1;
diff --git a/drivers/spi/spi_butterfly.c b/drivers/spi/spi_butterfly.c
index 0ee2b2090252..c2184866fa9c 100644
--- a/drivers/spi/spi_butterfly.c
+++ b/drivers/spi/spi_butterfly.c
@@ -287,7 +287,7 @@ static void butterfly_attach(struct parport *p)
         pp->dataflash = spi_new_device(pp->bitbang.master, &pp->info[0]);
         if (pp->dataflash)
                 pr_debug("%s: dataflash at %s\n", p->name,
-                                pp->dataflash->dev.bus_id);
+                                dev_name(&pp->dataflash->dev));
 
         // dev_info(_what?_, ...)
         pr_info("%s: AVR Butterfly\n", p->name);
diff --git a/drivers/spi/spi_lm70llp.c b/drivers/spi/spi_lm70llp.c
index 39d8d8ad65c0..af6526767e2a 100644
--- a/drivers/spi/spi_lm70llp.c
+++ b/drivers/spi/spi_lm70llp.c
@@ -287,7 +287,7 @@ static void spi_lm70llp_attach(struct parport *p)
         pp->spidev_lm70 = spi_new_device(pp->bitbang.master, &pp->info);
         if (pp->spidev_lm70)
                 dev_dbg(&pp->spidev_lm70->dev, "spidev_lm70 at %s\n",
-                                pp->spidev_lm70->dev.bus_id);
+                                dev_name(&pp->spidev_lm70->dev));
         else {
                 printk(KERN_WARNING "%s: spi_new_device failed\n", DRVNAME);
                 status = -ENODEV;
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index fe07462d5947..8171ca17b936 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -579,7 +579,7 @@ static void thermal_release(struct device *dev)
         struct thermal_zone_device *tz;
         struct thermal_cooling_device *cdev;
 
-        if (!strncmp(dev->bus_id, "thermal_zone", sizeof "thermal_zone" - 1)) {
+        if (!strncmp(dev_name(dev), "thermal_zone", sizeof "thermal_zone" - 1)) {
                 tz = to_thermal_zone(dev);
                 kfree(tz);
         } else {
@@ -630,7 +630,7 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
         cdev->ops = ops;
         cdev->device.class = &thermal_class;
         cdev->devdata = devdata;
-        sprintf(cdev->device.bus_id, "cooling_device%d", cdev->id);
+        dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
         result = device_register(&cdev->device);
         if (result) {
                 release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
@@ -769,7 +769,7 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
         tz->device.class = &thermal_class;
         tz->devdata = devdata;
         tz->trips = trips;
-        sprintf(tz->device.bus_id, "thermal_zone%d", tz->id);
+        dev_set_name(&tz->device, "thermal_zone%d", tz->id);
         result = device_register(&tz->device);
         if (result) {
                 release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 2d2440cd57a9..4ca85a113aa2 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -35,6 +35,7 @@ struct uio_device {
         int                     vma_count;
         struct uio_info         *info;
         struct kobject          *map_dir;
+        struct kobject          *portio_dir;
 };
 
 static int uio_major;
@@ -75,17 +76,17 @@ static ssize_t map_offset_show(struct uio_mem *mem, char *buf)
         return sprintf(buf, "0x%lx\n", mem->addr & ~PAGE_MASK);
 }
 
-struct uio_sysfs_entry {
+struct map_sysfs_entry {
         struct attribute attr;
         ssize_t (*show)(struct uio_mem *, char *);
         ssize_t (*store)(struct uio_mem *, const char *, size_t);
 };
 
-static struct uio_sysfs_entry addr_attribute =
+static struct map_sysfs_entry addr_attribute =
         __ATTR(addr, S_IRUGO, map_addr_show, NULL);
-static struct uio_sysfs_entry size_attribute =
+static struct map_sysfs_entry size_attribute =
         __ATTR(size, S_IRUGO, map_size_show, NULL);
-static struct uio_sysfs_entry offset_attribute =
+static struct map_sysfs_entry offset_attribute =
         __ATTR(offset, S_IRUGO, map_offset_show, NULL);
 
 static struct attribute *attrs[] = {
@@ -106,9 +107,9 @@ static ssize_t map_type_show(struct kobject *kobj, struct attribute *attr,
 {
         struct uio_map *map = to_map(kobj);
         struct uio_mem *mem = map->mem;
-        struct uio_sysfs_entry *entry;
+        struct map_sysfs_entry *entry;
 
-        entry = container_of(attr, struct uio_sysfs_entry, attr);
+        entry = container_of(attr, struct map_sysfs_entry, attr);
 
         if (!entry->show)
                 return -EIO;
@@ -116,16 +117,93 @@ static ssize_t map_type_show(struct kobject *kobj, struct attribute *attr,
         return entry->show(mem, buf);
 }
 
-static struct sysfs_ops uio_sysfs_ops = {
+static struct sysfs_ops map_sysfs_ops = {
         .show = map_type_show,
 };
 
 static struct kobj_type map_attr_type = {
         .release        = map_release,
-        .sysfs_ops      = &uio_sysfs_ops,
+        .sysfs_ops      = &map_sysfs_ops,
         .default_attrs  = attrs,
 };
 
+struct uio_portio {
+        struct kobject kobj;
+        struct uio_port *port;
+};
+#define to_portio(portio) container_of(portio, struct uio_portio, kobj)
+
+static ssize_t portio_start_show(struct uio_port *port, char *buf)
+{
+        return sprintf(buf, "0x%lx\n", port->start);
+}
+
+static ssize_t portio_size_show(struct uio_port *port, char *buf)
+{
+        return sprintf(buf, "0x%lx\n", port->size);
+}
+
+static ssize_t portio_porttype_show(struct uio_port *port, char *buf)
+{
+        const char *porttypes[] = {"none", "x86", "gpio", "other"};
+
+        if ((port->porttype < 0) || (port->porttype > UIO_PORT_OTHER))
+                return -EINVAL;
+
+        return sprintf(buf, "port_%s\n", porttypes[port->porttype]);
+}
+
+struct portio_sysfs_entry {
+        struct attribute attr;
+        ssize_t (*show)(struct uio_port *, char *);
+        ssize_t (*store)(struct uio_port *, const char *, size_t);
+};
+
+static struct portio_sysfs_entry portio_start_attribute =
+        __ATTR(start, S_IRUGO, portio_start_show, NULL);
+static struct portio_sysfs_entry portio_size_attribute =
+        __ATTR(size, S_IRUGO, portio_size_show, NULL);
+static struct portio_sysfs_entry portio_porttype_attribute =
+        __ATTR(porttype, S_IRUGO, portio_porttype_show, NULL);
+
+static struct attribute *portio_attrs[] = {
+        &portio_start_attribute.attr,
+        &portio_size_attribute.attr,
+        &portio_porttype_attribute.attr,
+        NULL,
+};
+
+static void portio_release(struct kobject *kobj)
+{
+        struct uio_portio *portio = to_portio(kobj);
+        kfree(portio);
+}
+
+static ssize_t portio_type_show(struct kobject *kobj, struct attribute *attr,
+                             char *buf)
+{
+        struct uio_portio *portio = to_portio(kobj);
+        struct uio_port *port = portio->port;
+        struct portio_sysfs_entry *entry;
+
+        entry = container_of(attr, struct portio_sysfs_entry, attr);
+
+        if (!entry->show)
+                return -EIO;
+
+        return entry->show(port, buf);
+}
+
+static struct sysfs_ops portio_sysfs_ops = {
+        .show = portio_type_show,
+};
+
+static struct kobj_type portio_attr_type = {
+        .release        = portio_release,
+        .sysfs_ops      = &portio_sysfs_ops,
+        .default_attrs  = portio_attrs,
+};
+
 static ssize_t show_name(struct device *dev,
                          struct device_attribute *attr, char *buf)
 {
@@ -177,10 +255,13 @@ static struct attribute_group uio_attr_grp = {
 static int uio_dev_add_attributes(struct uio_device *idev)
 {
         int ret;
-        int mi;
+        int mi, pi;
         int map_found = 0;
+        int portio_found = 0;
         struct uio_mem *mem;
         struct uio_map *map;
+        struct uio_port *port;
+        struct uio_portio *portio;
 
         ret = sysfs_create_group(&idev->dev->kobj, &uio_attr_grp);
         if (ret)
@@ -195,25 +276,58 @@ static int uio_dev_add_attributes(struct uio_device *idev)
                         idev->map_dir = kobject_create_and_add("maps",
                                                         &idev->dev->kobj);
                         if (!idev->map_dir)
-                                goto err;
+                                goto err_map;
                 }
                 map = kzalloc(sizeof(*map), GFP_KERNEL);
                 if (!map)
-                        goto err;
+                        goto err_map;
                 kobject_init(&map->kobj, &map_attr_type);
                 map->mem = mem;
                 mem->map = map;
                 ret = kobject_add(&map->kobj, idev->map_dir, "map%d", mi);
                 if (ret)
-                        goto err;
+                        goto err_map;
                 ret = kobject_uevent(&map->kobj, KOBJ_ADD);
                 if (ret)
-                        goto err;
+                        goto err_map;
+        }
+
+        for (pi = 0; pi < MAX_UIO_PORT_REGIONS; pi++) {
+                port = &idev->info->port[pi];
+                if (port->size == 0)
+                        break;
+                if (!portio_found) {
+                        portio_found = 1;
+                        idev->portio_dir = kobject_create_and_add("portio",
+                                                        &idev->dev->kobj);
+                        if (!idev->portio_dir)
+                                goto err_portio;
+                }
+                portio = kzalloc(sizeof(*portio), GFP_KERNEL);
+                if (!portio)
+                        goto err_portio;
+                kobject_init(&portio->kobj, &portio_attr_type);
+                portio->port = port;
+                port->portio = portio;
+                ret = kobject_add(&portio->kobj, idev->portio_dir,
+                                                        "port%d", pi);
+                if (ret)
+                        goto err_portio;
+                ret = kobject_uevent(&portio->kobj, KOBJ_ADD);
+                if (ret)
+                        goto err_portio;
         }
 
         return 0;
 
-err:
+err_portio:
+        for (pi--; pi >= 0; pi--) {
+                port = &idev->info->port[pi];
+                portio = port->portio;
+                kobject_put(&portio->kobj);
+        }
+        kobject_put(idev->portio_dir);
+err_map:
         for (mi--; mi>=0; mi--) {
                 mem = &idev->info->mem[mi];
                 map = mem->map;
@@ -228,15 +342,26 @@ err_group:
 
 static void uio_dev_del_attributes(struct uio_device *idev)
 {
-        int mi;
+        int i;
         struct uio_mem *mem;
-        for (mi = 0; mi < MAX_UIO_MAPS; mi++) {
-                mem = &idev->info->mem[mi];
+        struct uio_port *port;
+
+        for (i = 0; i < MAX_UIO_MAPS; i++) {
+                mem = &idev->info->mem[i];
                 if (mem->size == 0)
                         break;
                 kobject_put(&mem->map->kobj);
         }
         kobject_put(idev->map_dir);
+
+        for (i = 0; i < MAX_UIO_PORT_REGIONS; i++) {
+                port = &idev->info->port[i];
+                if (port->size == 0)
+                        break;
+                kobject_put(&port->portio->kobj);
+        }
+        kobject_put(idev->portio_dir);
+
         sysfs_remove_group(&idev->dev->kobj, &uio_attr_grp);
 }
 
diff --git a/drivers/uio/uio_cif.c b/drivers/uio/uio_cif.c
index 57376060b978..c60b8fcf0e3e 100644
--- a/drivers/uio/uio_cif.c
+++ b/drivers/uio/uio_cif.c
@@ -57,8 +57,7 @@ static int __devinit hilscher_pci_probe(struct pci_dev *dev,
         info->mem[0].addr = pci_resource_start(dev, 0);
         if (!info->mem[0].addr)
                 goto out_release;
-        info->mem[0].internal_addr = ioremap(pci_resource_start(dev, 0),
-                                             pci_resource_len(dev, 0));
+        info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
         if (!info->mem[0].internal_addr)
                 goto out_release;
 
diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
index 1f82c83a92ae..3f06818cf9fa 100644
--- a/drivers/uio/uio_pdrv_genirq.c
+++ b/drivers/uio/uio_pdrv_genirq.c
@@ -81,7 +81,8 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
                 goto bad0;
         }
 
-        if (uioinfo->handler || uioinfo->irqcontrol || uioinfo->irq_flags) {
+        if (uioinfo->handler || uioinfo->irqcontrol ||
+            uioinfo->irq_flags & IRQF_SHARED) {
                 dev_err(&pdev->dev, "interrupt configuration error\n");
                 goto bad0;
         }
@@ -132,7 +133,7 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
          * Interrupt sharing is not supported.
          */
 
-        uioinfo->irq_flags = IRQF_DISABLED;
+        uioinfo->irq_flags |= IRQF_DISABLED;
         uioinfo->handler = uio_pdrv_genirq_handler;
         uioinfo->irqcontrol = uio_pdrv_genirq_irqcontrol;
         uioinfo->priv = priv;
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index be1fa0723f2c..399e15fc5052 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -286,7 +286,7 @@ static int usb_dev_restore(struct device *dev)
         return usb_resume(dev);
 }
 
-static struct pm_ops usb_device_pm_ops = {
+static struct dev_pm_ops usb_device_pm_ops = {
         .prepare =      usb_dev_prepare,
         .complete =     usb_dev_complete,
         .suspend =      usb_dev_suspend,
@@ -301,7 +301,7 @@ static struct pm_ops usb_device_pm_ops = {
 
 #define ksuspend_usb_init()     0
 #define ksuspend_usb_cleanup()  do {} while (0)
-#define usb_device_pm_ops       (*(struct pm_ops *)0)
+#define usb_device_pm_ops       (*(struct dev_pm_ops *)0)
 
 #endif  /* CONFIG_PM */
 
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index a8a1de413321..0b2bb8f0706d 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -1474,7 +1474,7 @@ static struct at91_udc controller = {
                 .ep0    = &controller.ep[0].ep,
                 .name   = driver_name,
                 .dev    = {
-                        .bus_id = "gadget",
+                        .init_name = "gadget",
                         .release = nop_release,
                 }
         },
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index ae30ab1d264f..65b03e3445a1 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -1034,7 +1034,7 @@ static struct usba_udc the_udc = {
                 .is_dualspeed   = 1,
                 .name           = "atmel_usba_udc",
                 .dev    = {
-                        .bus_id         = "gadget",
+                        .init_name      = "gadget",
                         .release        = nop_release,
                 },
         },
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index b3408ff39fba..f40272565098 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -2545,7 +2545,7 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
 
         device_initialize(&udc_controller->gadget.dev);
 
-        strcpy(udc_controller->gadget.dev.bus_id, "gadget");
+        dev_set_name(&udc_controller->gadget.dev, "gadget");
 
         udc_controller->gadget.dev.release = qe_udc_release;
         udc_controller->gadget.dev.parent = &ofdev->dev;
diff --git a/drivers/usb/gadget/lh7a40x_udc.c b/drivers/usb/gadget/lh7a40x_udc.c
index c6e7df04c69a..d554b0895603 100644
--- a/drivers/usb/gadget/lh7a40x_udc.c
+++ b/drivers/usb/gadget/lh7a40x_udc.c
@@ -1981,7 +1981,7 @@ static struct lh7a40x_udc memory = {
                    .ep0 = &memory.ep[0].ep,
                    .name = driver_name,
                    .dev = {
-                           .bus_id = "gadget",
+                           .init_name = "gadget",
                            .release = nop_release,
                            },
                    },
diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
index 8c5026be79d4..697a0ca349bf 100644
--- a/drivers/usb/gadget/pxa25x_udc.c
+++ b/drivers/usb/gadget/pxa25x_udc.c
@@ -1833,7 +1833,7 @@ static struct pxa25x_udc memory = {
                 .ep0            = &memory.ep[0].ep,
                 .name           = driver_name,
                 .dev = {
-                        .bus_id         = "gadget",
+                        .init_name      = "gadget",
                         .release        = nop_release,
                 },
         },
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 944e4ff641df..65110d02a206 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -2162,7 +2162,7 @@ static struct pxa_udc memory = {
                 .ep0            = &memory.udc_usb_ep[0].usb_ep,
                 .name           = driver_name,
                 .dev = {
-                        .bus_id         = "gadget",
+                        .init_name      = "gadget",
                 },
         },
 
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 8d8d65165983..c7e255636803 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -1727,7 +1727,7 @@ static struct s3c2410_udc memory = {
                 .ep0            = &memory.ep[0].ep,
                 .name           = gadget_name,
                 .dev = {
-                        .bus_id         = "gadget",
+                        .init_name      = "gadget",
                 },
         },
 
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index fab0bc874b58..0664fc032235 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -217,7 +217,7 @@ struct backlight_device *backlight_device_register(const char *name,
         new_bd->dev.class = backlight_class;
         new_bd->dev.parent = parent;
         new_bd->dev.release = bl_device_release;
-        strlcpy(new_bd->dev.bus_id, name, BUS_ID_SIZE);
+        dev_set_name(&new_bd->dev, name);
         dev_set_drvdata(&new_bd->dev, devdata);
 
         rc = device_register(&new_bd->dev);
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 680e57b616cd..b6449470106c 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -208,7 +208,7 @@ struct lcd_device *lcd_device_register(const char *name, struct device *parent,
         new_ld->dev.class = lcd_class;
         new_ld->dev.parent = parent;
         new_ld->dev.release = lcd_device_release;
-        strlcpy(new_ld->dev.bus_id, name, BUS_ID_SIZE);
+        dev_set_name(&new_ld->dev, name);
         dev_set_drvdata(&new_ld->dev, devdata);
 
         rc = device_register(&new_ld->dev);
diff --git a/drivers/video/output.c b/drivers/video/output.c
index f2df5519c9c4..5e6439ae7394 100644
--- a/drivers/video/output.c
+++ b/drivers/video/output.c
@@ -96,7 +96,7 @@ struct output_device *video_output_register(const char *name,
         new_dev->props = op;
         new_dev->dev.class = &video_output_class;
         new_dev->dev.parent = dev;
-        strlcpy(new_dev->dev.bus_id,name, BUS_ID_SIZE);
+        dev_set_name(&new_dev->dev, name);
         dev_set_drvdata(&new_dev->dev, devdata);
         ret_code = device_register(&new_dev->dev);
         if (ret_code) {
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 265fdf2d1276..bef6b45e8a5c 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -73,10 +73,7 @@ MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
 /* A PCI device has it's own struct device and so does a virtio device so
  * we create a place for the virtio devices to show up in sysfs.  I think it
  * would make more sense for virtio to not insist on having it's own device. */
-static struct device virtio_pci_root = {
-        .parent         = NULL,
-        .init_name      = "virtio-pci",
-};
+static struct device *virtio_pci_root;
 
 /* Convert a generic virtio device to our structure */
 static struct virtio_pci_device *to_vp_device(struct virtio_device *vdev)
@@ -343,7 +340,7 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
         if (vp_dev == NULL)
                 return -ENOMEM;
 
-        vp_dev->vdev.dev.parent = &virtio_pci_root;
+        vp_dev->vdev.dev.parent = virtio_pci_root;
         vp_dev->vdev.dev.release = virtio_pci_release_dev;
         vp_dev->vdev.config = &virtio_pci_config_ops;
         vp_dev->pci_dev = pci_dev;
@@ -437,13 +434,13 @@ static int __init virtio_pci_init(void)
 {
         int err;
 
-        err = device_register(&virtio_pci_root);
-        if (err)
-                return err;
+        virtio_pci_root = root_device_register("virtio-pci");
+        if (IS_ERR(virtio_pci_root))
+                return PTR_ERR(virtio_pci_root);
 
         err = pci_register_driver(&virtio_pci_driver);
         if (err)
-                device_unregister(&virtio_pci_root);
+                device_unregister(virtio_pci_root);
 
         return err;
 }
@@ -452,8 +449,8 @@ module_init(virtio_pci_init);
 
 static void __exit virtio_pci_exit(void)
 {
-        device_unregister(&virtio_pci_root);
         pci_unregister_driver(&virtio_pci_driver);
+        root_device_unregister(virtio_pci_root);
 }
 
 module_exit(virtio_pci_exit);
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 3b615d4022ee..acc7e3b7fe17 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -197,7 +197,7 @@ struct device_driver w1_master_driver = {
 struct device w1_master_device = {
         .parent = NULL,
         .bus = &w1_bus_type,
-        .bus_id = "w1 bus master",
+        .init_name = "w1 bus master",
         .driver = &w1_master_driver,
         .release = &w1_master_release
 };
@@ -211,7 +211,7 @@ static struct device_driver w1_slave_driver = {
 struct device w1_slave_device = {
         .parent = NULL,
         .bus = &w1_bus_type,
-        .bus_id = "w1 bus slave",
+        .init_name = "w1 bus slave",
         .driver = &w1_slave_driver,
         .release = &w1_slave_release
 };
@@ -573,7 +573,7 @@ static int w1_uevent(struct device *dev, struct kobj_uevent_env *env)
         }
 
         dev_dbg(dev, "Hotplug event for %s %s, bus_id=%s.\n",
-                        event_owner, name, dev->bus_id);
+                        event_owner, name, dev_name(dev));
 
         if (dev->driver != &w1_slave_driver || !sl)
                 return 0;
@@ -605,8 +605,7 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
         sl->dev.bus = &w1_bus_type;
         sl->dev.release = &w1_slave_release;
 
-        snprintf(&sl->dev.bus_id[0], sizeof(sl->dev.bus_id),
-                 "%02x-%012llx",
+        dev_set_name(&sl->dev, "%02x-%012llx",
                  (unsigned int) sl->reg_num.family,
                  (unsigned long long) sl->reg_num.id);
         snprintf(&sl->name[0], sizeof(sl->name),
@@ -615,13 +614,13 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
                  (unsigned long long) sl->reg_num.id);
 
         dev_dbg(&sl->dev, "%s: registering %s as %p.\n", __func__,
-                &sl->dev.bus_id[0], sl);
+                dev_name(&sl->dev), sl);
 
         err = device_register(&sl->dev);
         if (err < 0) {
                 dev_err(&sl->dev,
                         "Device registration [%s] failed. err=%d\n",
-                        sl->dev.bus_id, err);
+                        dev_name(&sl->dev), err);
                 return err;
         }
 
@@ -630,7 +629,7 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
         if (err < 0) {
                 dev_err(&sl->dev,
                         "sysfs file creation for [%s] failed. err=%d\n",
-                        sl->dev.bus_id, err);
+                        dev_name(&sl->dev), err);
                 goto out_unreg;
         }
 
@@ -639,7 +638,7 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
         if (err < 0) {
                 dev_err(&sl->dev,
                         "sysfs file creation for [%s] failed. err=%d\n",
-                        sl->dev.bus_id, err);
+                        dev_name(&sl->dev), err);
                 goto out_rem1;
         }
 
@@ -648,7 +647,7 @@ static int __w1_attach_slave_device(struct w1_slave *sl)
             ((err = sl->family->fops->add_slave(sl)) < 0)) {
                 dev_err(&sl->dev,
                         "sysfs file creation for [%s] failed. err=%d\n",
-                        sl->dev.bus_id, err);
+                        dev_name(&sl->dev), err);
                 goto out_rem2;
         }
 
diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
index a3a54567bfba..4a46ed58ece9 100644
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -75,8 +75,7 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
         mutex_init(&dev->mutex);
 
         memcpy(&dev->dev, device, sizeof(struct device));
-        snprintf(dev->dev.bus_id, sizeof(dev->dev.bus_id),
-                  "w1_bus_master%u", dev->id);
+        dev_set_name(&dev->dev, "w1_bus_master%u", dev->id);
         snprintf(dev->name, sizeof(dev->name), "w1_bus_master%u", dev->id);
 
         dev->driver = driver;
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 7f24a98a446f..b2a03184a246 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -99,15 +99,15 @@ static int xenbus_uevent(struct device *_dev, struct kobj_uevent_env *env)
 }
 
 /* device/<type>/<id> => <type>-<id> */
-static int frontend_bus_id(char bus_id[BUS_ID_SIZE], const char *nodename)
+static int frontend_bus_id(char bus_id[XEN_BUS_ID_SIZE], const char *nodename)
 {
         nodename = strchr(nodename, '/');
-        if (!nodename || strlen(nodename + 1) >= BUS_ID_SIZE) {
+        if (!nodename || strlen(nodename + 1) >= XEN_BUS_ID_SIZE) {
                 printk(KERN_WARNING "XENBUS: bad frontend %s\n", nodename);
                 return -EINVAL;
         }
 
-        strlcpy(bus_id, nodename + 1, BUS_ID_SIZE);
+        strlcpy(bus_id, nodename + 1, XEN_BUS_ID_SIZE);
         if (!strchr(bus_id, '/')) {
                 printk(KERN_WARNING "XENBUS: bus_id %s no slash\n", bus_id);
                 return -EINVAL;
@@ -460,6 +460,7 @@ int xenbus_probe_node(struct xen_bus_type *bus,
                       const char *type,
                       const char *nodename)
 {
+        char devname[XEN_BUS_ID_SIZE];
         int err;
         struct xenbus_device *xendev;
         size_t stringlen;
@@ -494,10 +495,12 @@ int xenbus_probe_node(struct xen_bus_type *bus,
         xendev->dev.bus = &bus->bus;
         xendev->dev.release = xenbus_dev_release;
 
-        err = bus->get_bus_id(xendev->dev.bus_id, xendev->nodename);
+        err = bus->get_bus_id(devname, xendev->nodename);
         if (err)
                 goto fail;
 
+        dev_set_name(&xendev->dev, devname);
+
         /* Register with generic device framework. */
         err = device_register(&xendev->dev);
         if (err)
@@ -611,7 +614,7 @@ void xenbus_dev_changed(const char *node, struct xen_bus_type *bus)
 {
         int exists, rootlen;
         struct xenbus_device *dev;
-        char type[BUS_ID_SIZE];
+        char type[XEN_BUS_ID_SIZE];
         const char *p, *root;
 
         if (char_count(node, '/') < 2)
@@ -625,8 +628,8 @@ void xenbus_dev_changed(const char *node, struct xen_bus_type *bus)
 
         /* backend/<type>/... or device/<type>/... */
         p = strchr(node, '/') + 1;
-        snprintf(type, BUS_ID_SIZE, "%.*s", (int)strcspn(p, "/"), p);
-        type[BUS_ID_SIZE-1] = '\0';
+        snprintf(type, XEN_BUS_ID_SIZE, "%.*s", (int)strcspn(p, "/"), p);
+        type[XEN_BUS_ID_SIZE-1] = '\0';
 
         rootlen = strsep_len(node, '/', bus->levels);
         if (rootlen < 0)
@@ -674,7 +677,7 @@ static int suspend_dev(struct device *dev, void *data)
                 err = drv->suspend(xdev);
         if (err)
                 printk(KERN_WARNING
-                       "xenbus: suspend %s failed: %i\n", dev->bus_id, err);
+                       "xenbus: suspend %s failed: %i\n", dev_name(dev), err);
         return 0;
 }
 
@@ -695,7 +698,7 @@ static int suspend_cancel_dev(struct device *dev, void *data)
         if (err)
                 printk(KERN_WARNING
                        "xenbus: suspend_cancel %s failed: %i\n",
-                       dev->bus_id, err);
+                       dev_name(dev), err);
         return 0;
 }
 
@@ -717,7 +720,7 @@ static int resume_dev(struct device *dev, void *data)
         if (err) {
                 printk(KERN_WARNING
                        "xenbus: resume (talk_to_otherend) %s failed: %i\n",
-                       dev->bus_id, err);
+                       dev_name(dev), err);
                 return err;
         }
 
@@ -728,7 +731,7 @@ static int resume_dev(struct device *dev, void *data)
                 if (err) {
                         printk(KERN_WARNING
                                "xenbus: resume %s failed: %i\n",
-                               dev->bus_id, err);
+                               dev_name(dev), err);
                         return err;
                 }
         }
@@ -737,7 +740,7 @@ static int resume_dev(struct device *dev, void *data)
         if (err) {
                 printk(KERN_WARNING
                        "xenbus_probe: resume (watch_otherend) %s failed: "
-                       "%d.\n", dev->bus_id, err);
+                       "%d.\n", dev_name(dev), err);
                 return err;
         }
 
diff --git a/drivers/xen/xenbus/xenbus_probe.h b/drivers/xen/xenbus/xenbus_probe.h
index e09b19415a40..6c5e3185a6a2 100644
--- a/drivers/xen/xenbus/xenbus_probe.h
+++ b/drivers/xen/xenbus/xenbus_probe.h
@@ -34,6 +34,8 @@
 #ifndef _XENBUS_PROBE_H
 #define _XENBUS_PROBE_H
 
+#define XEN_BUS_ID_SIZE                 20
+
 #ifdef CONFIG_XEN_BACKEND
 extern void xenbus_backend_suspend(int (*fn)(struct device *, void *));
 extern void xenbus_backend_resume(int (*fn)(struct device *, void *));
@@ -52,7 +54,7 @@ struct xen_bus_type
 {
         char *root;
         unsigned int levels;
-        int (*get_bus_id)(char bus_id[BUS_ID_SIZE], const char *nodename);
+        int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename);
         int (*probe)(const char *type, const char *dir);
         struct bus_type bus;
 };