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

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits)
  Driver core: show drivers in /sys/module/
  Documentation/driver-model/platform.txt update/rewrite
  Driver core: platform_driver_probe(), can save codespace
  driver core: Use klist_remove() in device_move()
  driver core: Introduce device_move(): move a device to a new parent.
  Driver core: make drivers/base/core.c:setup_parent() static
  driver core: Introduce device_find_child().
  sysfs: sysfs_write_file() writes zero terminated data
  cpu topology: consider sysfs_create_group return value
  Driver core: Call platform_notify_remove later
  ACPI: Change ACPI to use dev_archdata instead of firmware_data
  Driver core: add dev_archdata to struct device
  Driver core: convert sound core to use struct device
  Driver core: change mem class_devices to be real devices
  Driver core: convert fb code to use struct device
  Driver core: convert firmware code to use struct device
  Driver core: convert mmc code to use struct device
  Driver core: convert ppdev code to use struct device
  Driver core: convert PPP code to use struct device
  Driver core: convert cpuid code to use struct device
  ...

Documentation/driver-model/platform.txt

 Platform Devices and Drivers
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+See <linux/platform_device.h> for the driver model interface to the
+platform bus:  platform_device, and platform_driver.  This pseudo-bus
+is used to connect devices on busses with minimal infrastructure,
+like those used to integrate peripherals on many system-on-chip
+processors, or some "legacy" PC interconnects; as opposed to large
+formally specified ones like PCI or USB.
+
 
 Platform devices
 ~~~~~~~~~~~~~~~~
 Platform devices are devices that typically appear as autonomous
 entities in the system. This includes legacy port-based devices and
-host bridges to peripheral buses. 
-
-
-Platform drivers
-~~~~~~~~~~~~~~~~
-Drivers for platform devices are typically very simple and
-unstructured. Either the device was present at a particular I/O port
-and the driver was loaded, or it was not. There was no possibility
-of hotplugging or alternative discovery besides probing at a specific
-I/O address and expecting a specific response.
+host bridges to peripheral buses, and most controllers integrated
+into system-on-chip platforms.  What they usually have in common
+is direct addressing from a CPU bus.  Rarely, a platform_device will
+be connected through a segment of some other kind of bus; but its
+registers will still be directly addressible.
 
+Platform devices are given a name, used in driver binding, and a
+list of resources such as addresses and IRQs.
 
-Other Architectures, Modern Firmware, and new Platforms
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-These devices are not always at the legacy I/O ports. This is true on
-other architectures and on some modern architectures. In most cases,
-the drivers are modified to discover the devices at other well-known
-ports for the given platform. However, the firmware in these systems
-does usually know where exactly these devices reside, and in some
-cases, it's the only way of discovering them. 
+struct platform_device {
+	const char	*name;
+	u32		id;
+	struct device	dev;
+	u32		num_resources;
+	struct resource	*resource;
+};
 
 
-The Platform Bus
-~~~~~~~~~~~~~~~~
-A platform bus has been created to deal with these issues. First and
-foremost, it groups all the legacy devices under a common bus, and
-gives them a common parent if they don't already have one. 
-
-But, besides the organizational benefits, the platform bus can also
-accommodate firmware-based enumeration. 
-
-
-Device Discovery
+Platform drivers
 ~~~~~~~~~~~~~~~~
-The platform bus has no concept of probing for devices. Devices
-discovery is left up to either the legacy drivers or the
-firmware. These entities are expected to notify the platform of
-devices that it discovers via the bus's add() callback:
-
-	platform_bus.add(parent,bus_id).
-
-
-Bus IDs
-~~~~~~~
-Bus IDs are the canonical names for the devices. There is no globally
-standard addressing mechanism for legacy devices. In the IA-32 world,
-we have Pnp IDs to use, as well as the legacy I/O ports. However,
-neither tell what the device really is or have any meaning on other
-platforms. 
-
-Since both PnP IDs and the legacy I/O ports (and other standard I/O
-ports for specific devices) have a 1:1 mapping, we map the
-platform-specific name or identifier to a generic name (at least
-within the scope of the kernel).
-
-For example, a serial driver might find a device at I/O 0x3f8. The
-ACPI firmware might also discover a device with PnP ID (_HID)
-PNP0501. Both correspond to the same device and should be mapped to the
-canonical name 'serial'. 
-
-The bus_id field should be a concatenation of the canonical name and
-the instance of that type of device. For example, the device at I/O
-port 0x3f8 should have a bus_id of "serial0". This places the
-responsibility of enumerating devices of a particular type up to the
-discovery mechanism. But, they are the entity that should know best
-(as opposed to the platform bus driver).
-
-
-Drivers 
-~~~~~~~
-Drivers for platform devices should have a name that is the same as
-the canonical name of the devices they support. This allows the
-platform bus driver to do simple matching with the basic data
-structures to determine if a driver supports a certain device. 
-
-For example, a legacy serial driver should have a name of 'serial' and
-register itself with the platform bus. 
-
-
-Driver Binding
-~~~~~~~~~~~~~~
-Legacy drivers assume they are bound to the device once they start up
-and probe an I/O port. Divorcing them from this will be a difficult
-process. However, that shouldn't prevent us from implementing
-firmware-based enumeration. 
-
-The firmware should notify the platform bus about devices before the
-legacy drivers have had a chance to load. Once the drivers are loaded,
-they driver model core will attempt to bind the driver to any
-previously-discovered devices. Once that has happened, it will be free
-to discover any other devices it pleases.
+Platform drivers follow the standard driver model convention, where
+discovery/enumeration is handled outside the drivers, and drivers
+provide probe() and remove() methods.  They support power management
+and shutdown notifications using the standard conventions.
+
+struct platform_driver {
+	int (*probe)(struct platform_device *);
+	int (*remove)(struct platform_device *);
+	void (*shutdown)(struct platform_device *);
+	int (*suspend)(struct platform_device *, pm_message_t state);
+	int (*suspend_late)(struct platform_device *, pm_message_t state);
+	int (*resume_early)(struct platform_device *);
+	int (*resume)(struct platform_device *);
+	struct device_driver driver;
+};
+
+Note that probe() should general verify that the specified device hardware
+actually exists; sometimes platform setup code can't be sure.  The probing
+can use device resources, including clocks, and device platform_data.
+
+Platform drivers register themselves the normal way:
+
+	int platform_driver_register(struct platform_driver *drv);
+
+Or, in common situations where the device is known not to be hot-pluggable,
+the probe() routine can live in an init section to reduce the driver's
+runtime memory footprint:
+
+	int platform_driver_probe(struct platform_driver *drv,
+			  int (*probe)(struct platform_device *))
+
+
+Device Enumeration
+~~~~~~~~~~~~~~~~~~
+As a rule, platform specific (and often board-specific) setup code wil
+register platform devices:
+
+	int platform_device_register(struct platform_device *pdev);
+
+	int platform_add_devices(struct platform_device **pdevs, int ndev);
+
+The general rule is to register only those devices that actually exist,
+but in some cases extra devices might be registered.  For example, a kernel
+might be configured to work with an external network adapter that might not
+be populated on all boards, or likewise to work with an integrated controller
+that some boards might not hook up to any peripherals.
+
+In some cases, boot firmware will export tables describing the devices
+that are populated on a given board.   Without such tables, often the
+only way for system setup code to set up the correct devices is to build
+a kernel for a specific target board.  Such board-specific kernels are
+common with embedded and custom systems development.
+
+In many cases, the memory and IRQ resources associated with the platform
+device are not enough to let the device's driver work.  Board setup code
+will often provide additional information using the device's platform_data
+field to hold additional information.
+
+Embedded systems frequently need one or more clocks for platform devices,
+which are normally kept off until they're actively needed (to save power).
+System setup also associates those clocks with the device, so that that
+calls to clk_get(&pdev->dev, clock_name) return them as needed.
+
+
+Device Naming and Driver Binding
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+The platform_device.dev.bus_id is the canonical name for the devices.
+It's built from two components:
+
+    * platform_device.name ... which is also used to for driver matching.
+
+    * platform_device.id ... the device instance number, or else "-1"
+      to indicate there's only one.
+
+These are catenated, so name/id "serial"/0 indicates bus_id "serial.0", and
+"serial/3" indicates bus_id "serial.3"; both would use the platform_driver
+named "serial".  While "my_rtc"/-1 would be bus_id "my_rtc" (no instance id)
+and use the platform_driver called "my_rtc".
+
+Driver binding is performed automatically by the driver core, invoking
+driver probe() after finding a match between device and driver.  If the
+probe() succeeds, the driver and device are bound as usual.  There are
+three different ways to find such a match:
+
+    - Whenever a device is registered, the drivers for that bus are
+      checked for matches.  Platform devices should be registered very
+      early during system boot.
+
+    - When a driver is registered using platform_driver_register(), all
+      unbound devices on that bus are checked for matches.  Drivers
+      usually register later during booting, or by module loading.
+
+    - Registering a driver using platform_driver_probe() works just like
+      using platform_driver_register(), except that the the driver won't
+      be probed later if another device registers.  (Which is OK, since
+      this interface is only for use with non-hotpluggable devices.)
 

arch/i386/kernel/cpuid.c

@@ -156,14 +156,14 @@ static struct file_operations cpuid_fops = {
 	.open = cpuid_open,
 };
 
-static int cpuid_class_device_create(int i)
+static int cpuid_device_create(int i)
 {
 	int err = 0;
-	struct class_device *class_err;
+	struct device *dev;
 
-	class_err = class_device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, i), NULL, "cpu%d",i);
-	if (IS_ERR(class_err))
-		err = PTR_ERR(class_err);
+	dev = device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, i), "cpu%d",i);
+	if (IS_ERR(dev))
+		err = PTR_ERR(dev);
 	return err;
 }
 
@@ -174,10 +174,10 @@ static int cpuid_class_cpu_callback(struct notifier_block *nfb, unsigned long ac
 
 	switch (action) {
 	case CPU_ONLINE:
-		cpuid_class_device_create(cpu);
+		cpuid_device_create(cpu);
 		break;
 	case CPU_DEAD:
-		class_device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
+		device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
 		break;
 	}
 	return NOTIFY_OK;
@@ -206,7 +206,7 @@ static int __init cpuid_init(void)
 		goto out_chrdev;
 	}
 	for_each_online_cpu(i) {
-		err = cpuid_class_device_create(i);
+		err = cpuid_device_create(i);
 		if (err != 0) 
 			goto out_class;
 	}
@@ -218,7 +218,7 @@ static int __init cpuid_init(void)
 out_class:
 	i = 0;
 	for_each_online_cpu(i) {
-		class_device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, i));
+		device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, i));
 	}
 	class_destroy(cpuid_class);
 out_chrdev:
@@ -232,7 +232,7 @@ static void __exit cpuid_exit(void)
 	int cpu = 0;
 
 	for_each_online_cpu(cpu)
-		class_device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
+		device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
 	class_destroy(cpuid_class);
 	unregister_chrdev(CPUID_MAJOR, "cpu/cpuid");
 	unregister_hotcpu_notifier(&cpuid_class_cpu_notifier);

arch/i386/kernel/msr.c

@@ -239,14 +239,14 @@ static struct file_operations msr_fops = {
 	.open = msr_open,
 };
 
-static int msr_class_device_create(int i)
+static int msr_device_create(int i)
 {
 	int err = 0;
-	struct class_device *class_err;
+	struct device *dev;
 
-	class_err = class_device_create(msr_class, NULL, MKDEV(MSR_MAJOR, i), NULL, "msr%d",i);
-	if (IS_ERR(class_err)) 
-		err = PTR_ERR(class_err);
+	dev = device_create(msr_class, NULL, MKDEV(MSR_MAJOR, i), "msr%d",i);
+	if (IS_ERR(dev))
+		err = PTR_ERR(dev);
 	return err;
 }
 
@@ -258,10 +258,10 @@ static int msr_class_cpu_callback(struct notifier_block *nfb,
 
 	switch (action) {
 	case CPU_ONLINE:
-		msr_class_device_create(cpu);
+		msr_device_create(cpu);
 		break;
 	case CPU_DEAD:
-		class_device_destroy(msr_class, MKDEV(MSR_MAJOR, cpu));
+		device_destroy(msr_class, MKDEV(MSR_MAJOR, cpu));
 		break;
 	}
 	return NOTIFY_OK;
@@ -290,7 +290,7 @@ static int __init msr_init(void)
 		goto out_chrdev;
 	}
 	for_each_online_cpu(i) {
-		err = msr_class_device_create(i);
+		err = msr_device_create(i);
 		if (err != 0)
 			goto out_class;
 	}
@@ -302,7 +302,7 @@ static int __init msr_init(void)
 out_class:
 	i = 0;
 	for_each_online_cpu(i)
-		class_device_destroy(msr_class, MKDEV(MSR_MAJOR, i));
+		device_destroy(msr_class, MKDEV(MSR_MAJOR, i));
 	class_destroy(msr_class);
 out_chrdev:
 	unregister_chrdev(MSR_MAJOR, "cpu/msr");
@@ -314,7 +314,7 @@ static void __exit msr_exit(void)
 {
 	int cpu = 0;
 	for_each_online_cpu(cpu)
-		class_device_destroy(msr_class, MKDEV(MSR_MAJOR, cpu));
+		device_destroy(msr_class, MKDEV(MSR_MAJOR, cpu));
 	class_destroy(msr_class);
 	unregister_chrdev(MSR_MAJOR, "cpu/msr");
 	unregister_hotcpu_notifier(&msr_class_cpu_notifier);

drivers/acpi/glue.c

@@ -267,9 +267,9 @@ static int acpi_bind_one(struct device *dev, acpi_handle handle)
 {
 	acpi_status status;
 
-	if (dev->firmware_data) {
+	if (dev->archdata.acpi_handle) {
 		printk(KERN_WARNING PREFIX
-		       "Drivers changed 'firmware_data' for %s\n", dev->bus_id);
+		       "Drivers changed 'acpi_handle' for %s\n", dev->bus_id);
 		return -EINVAL;
 	}
 	get_device(dev);
@@ -278,25 +278,26 @@ static int acpi_bind_one(struct device *dev, acpi_handle handle)
 		put_device(dev);
 		return -EINVAL;
 	}
-	dev->firmware_data = handle;
+	dev->archdata.acpi_handle = handle;
 
 	return 0;
 }
 
 static int acpi_unbind_one(struct device *dev)
 {
-	if (!dev->firmware_data)
+	if (!dev->archdata.acpi_handle)
 		return 0;
-	if (dev == acpi_get_physical_device(dev->firmware_data)) {
+	if (dev == acpi_get_physical_device(dev->archdata.acpi_handle)) {
 		/* acpi_get_physical_device increase refcnt by one */
 		put_device(dev);
-		acpi_detach_data(dev->firmware_data, acpi_glue_data_handler);
-		dev->firmware_data = NULL;
+		acpi_detach_data(dev->archdata.acpi_handle,
+				 acpi_glue_data_handler);
+		dev->archdata.acpi_handle = NULL;
 		/* acpi_bind_one increase refcnt by one */
 		put_device(dev);
 	} else {
 		printk(KERN_ERR PREFIX
-		       "Oops, 'firmware_data' corrupt for %s\n", dev->bus_id);
+		       "Oops, 'acpi_handle' corrupt for %s\n", dev->bus_id);
 	}
 	return 0;
 }
@@ -328,7 +329,8 @@ static int acpi_platform_notify(struct device *dev)
 	if (!ret) {
 		struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
-		acpi_get_name(dev->firmware_data, ACPI_FULL_PATHNAME, &buffer);
+		acpi_get_name(dev->archdata.acpi_handle,
+			      ACPI_FULL_PATHNAME, &buffer);
 		DBG("Device %s -> %s\n", dev->bus_id, (char *)buffer.pointer);
 		kfree(buffer.pointer);
 	} else

drivers/base/bus.c

@@ -355,6 +355,21 @@ static void device_remove_attrs(struct bus_type * bus, struct device * dev)
 	}
 }
 
+#ifdef CONFIG_SYSFS_DEPRECATED
+static int make_deprecated_bus_links(struct device *dev)
+{
+	return sysfs_create_link(&dev->kobj,
+				 &dev->bus->subsys.kset.kobj, "bus");
+}
+
+static void remove_deprecated_bus_links(struct device *dev)
+{
+	sysfs_remove_link(&dev->kobj, "bus");
+}
+#else
+static inline int make_deprecated_bus_links(struct device *dev) { return 0; }
+static inline void remove_deprecated_bus_links(struct device *dev) { }
+#endif
 
 /**
  *	bus_add_device - add device to bus
@@ -381,8 +396,7 @@ int bus_add_device(struct device * dev)
 				&dev->bus->subsys.kset.kobj, "subsystem");
 		if (error)
 			goto out_subsys;
-		error = sysfs_create_link(&dev->kobj,
-				&dev->bus->subsys.kset.kobj, "bus");
+		error = make_deprecated_bus_links(dev);
 		if (error)
 			goto out_deprecated;
 	}
@@ -436,7 +450,7 @@ void bus_remove_device(struct device * dev)
 {
 	if (dev->bus) {
 		sysfs_remove_link(&dev->kobj, "subsystem");
-		sysfs_remove_link(&dev->kobj, "bus");
+		remove_deprecated_bus_links(dev);
 		sysfs_remove_link(&dev->bus->devices.kobj, dev->bus_id);
 		device_remove_attrs(dev->bus, dev);
 		if (dev->is_registered) {
@@ -724,6 +738,8 @@ int bus_register(struct bus_type * bus)
 {
 	int retval;
 
+	BLOCKING_INIT_NOTIFIER_HEAD(&bus->bus_notifier);
+
 	retval = kobject_set_name(&bus->subsys.kset.kobj, "%s", bus->name);
 	if (retval)
 		goto out;
@@ -782,6 +798,18 @@ void bus_unregister(struct bus_type * bus)
 	subsystem_unregister(&bus->subsys);
 }
 
+int bus_register_notifier(struct bus_type *bus, struct notifier_block *nb)
+{
+	return blocking_notifier_chain_register(&bus->bus_notifier, nb);
+}
+EXPORT_SYMBOL_GPL(bus_register_notifier);
+
+int bus_unregister_notifier(struct bus_type *bus, struct notifier_block *nb)
+{
+	return blocking_notifier_chain_unregister(&bus->bus_notifier, nb);
+}
+EXPORT_SYMBOL_GPL(bus_unregister_notifier);
+
 int __init buses_init(void)
 {
 	return subsystem_register(&bus_subsys);

drivers/base/class.c

@@ -352,6 +352,92 @@ static const char *class_uevent_name(struct kset *kset, struct kobject *kobj)
 	return class_dev->class->name;
 }
 
+#ifdef CONFIG_SYSFS_DEPRECATED
+char *make_class_name(const char *name, struct kobject *kobj)
+{
+	char *class_name;
+	int size;
+
+	size = strlen(name) + strlen(kobject_name(kobj)) + 2;
+
+	class_name = kmalloc(size, GFP_KERNEL);
+	if (!class_name)
+		return ERR_PTR(-ENOMEM);
+
+	strcpy(class_name, name);
+	strcat(class_name, ":");
+	strcat(class_name, kobject_name(kobj));
+	return class_name;
+}
+
+static int deprecated_class_uevent(char **envp, int num_envp, int *cur_index,
+				   char *buffer, int buffer_size,
+				   int *cur_len,
+				   struct class_device *class_dev)
+{
+	struct device *dev = class_dev->dev;
+	char *path;
+
+	if (!dev)
+		return 0;
+
+	/* add device, backing this class device (deprecated) */
+	path = kobject_get_path(&dev->kobj, GFP_KERNEL);
+
+	add_uevent_var(envp, num_envp, cur_index, buffer, buffer_size,
+		       cur_len, "PHYSDEVPATH=%s", path);
+	kfree(path);
+
+	if (dev->bus)
+		add_uevent_var(envp, num_envp, cur_index,
+			       buffer, buffer_size, cur_len,
+			       "PHYSDEVBUS=%s", dev->bus->name);
+
+	if (dev->driver)
+		add_uevent_var(envp, num_envp, cur_index,
+			       buffer, buffer_size, cur_len,
+			       "PHYSDEVDRIVER=%s", dev->driver->name);
+	return 0;
+}
+
+static int make_deprecated_class_device_links(struct class_device *class_dev)
+{
+	char *class_name;
+	int error;
+
+	if (!class_dev->dev)
+		return 0;
+
+	class_name = make_class_name(class_dev->class->name, &class_dev->kobj);
+	error = sysfs_create_link(&class_dev->dev->kobj, &class_dev->kobj,
+				  class_name);
+	kfree(class_name);
+	return error;
+}
+
+static void remove_deprecated_class_device_links(struct class_device *class_dev)
+{
+	char *class_name;
+
+	if (!class_dev->dev)
+		return;
+
+	class_name = make_class_name(class_dev->class->name, &class_dev->kobj);
+	sysfs_remove_link(&class_dev->dev->kobj, class_name);
+	kfree(class_name);
+}
+#else
+static inline int deprecated_class_uevent(char **envp, int num_envp,
+					  int *cur_index, char *buffer,
+					  int buffer_size, int *cur_len,
+					  struct class_device *class_dev)
+{ return 0; }
+static inline int make_deprecated_class_device_links(struct class_device *cd)
+{ return 0; }
+static void remove_deprecated_class_device_links(struct class_device *cd)
+{ }
+#endif
+
 static int class_uevent(struct kset *kset, struct kobject *kobj, char **envp,
 			 int num_envp, char *buffer, int buffer_size)
 {
@@ -362,25 +448,8 @@ static int class_uevent(struct kset *kset, struct kobject *kobj, char **envp,
 
 	pr_debug("%s - name = %s\n", __FUNCTION__, class_dev->class_id);
 
-	if (class_dev->dev) {
-		/* add device, backing this class device (deprecated) */
-		struct device *dev = class_dev->dev;
-		char *path = kobject_get_path(&dev->kobj, GFP_KERNEL);
-
-		add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
-			       &length, "PHYSDEVPATH=%s", path);
-		kfree(path);
-
-		if (dev->bus)
-			add_uevent_var(envp, num_envp, &i,
-				       buffer, buffer_size, &length,
-				       "PHYSDEVBUS=%s", dev->bus->name);
-
-		if (dev->driver)
-			add_uevent_var(envp, num_envp, &i,
-				       buffer, buffer_size, &length,
-				       "PHYSDEVDRIVER=%s", dev->driver->name);
-	}
+	deprecated_class_uevent(envp, num_envp, &i, buffer, buffer_size,
+				&length, class_dev);
 
 	if (MAJOR(class_dev->devt)) {
 		add_uevent_var(envp, num_envp, &i,
@@ -506,29 +575,11 @@ void class_device_initialize(struct class_device *class_dev)
 	INIT_LIST_HEAD(&class_dev->node);
 }
 
-char *make_class_name(const char *name, struct kobject *kobj)
-{
-	char *class_name;
-	int size;
-
-	size = strlen(name) + strlen(kobject_name(kobj)) + 2;
-
-	class_name = kmalloc(size, GFP_KERNEL);
-	if (!class_name)
-		return ERR_PTR(-ENOMEM);
-
-	strcpy(class_name, name);
-	strcat(class_name, ":");
-	strcat(class_name, kobject_name(kobj));
-	return class_name;
-}
-
 int class_device_add(struct class_device *class_dev)
 {
 	struct class *parent_class = NULL;
 	struct class_device *parent_class_dev = NULL;
 	struct class_interface *class_intf;
-	char *class_name = NULL;
 	int error = -EINVAL;
 
 	class_dev = class_device_get(class_dev);
@@ -599,19 +650,17 @@ int class_device_add(struct class_device *class_dev)
 		goto out5;
 
 	if (class_dev->dev) {
-		class_name = make_class_name(class_dev->class->name,
-					     &class_dev->kobj);
 		error = sysfs_create_link(&class_dev->kobj,
 					  &class_dev->dev->kobj, "device");
 		if (error)
 			goto out6;
-		error = sysfs_create_link(&class_dev->dev->kobj, &class_dev->kobj,
-					  class_name);
-		if (error)
-			goto out7;
 	}
 
 	error = class_device_add_groups(class_dev);
+	if (error)
+		goto out7;
+
+	error = make_deprecated_class_device_links(class_dev);
 	if (error)
 		goto out8;
 
@@ -629,8 +678,7 @@ int class_device_add(struct class_device *class_dev)
 	goto out1;
 
  out8:
-	if (class_dev->dev)
-		sysfs_remove_link(&class_dev->kobj, class_name);
+	class_device_remove_groups(class_dev);
  out7:
 	if (class_dev->dev)
 		sysfs_remove_link(&class_dev->kobj, "device");
@@ -649,7 +697,6 @@ int class_device_add(struct class_device *class_dev)
 	class_put(parent_class);
  out1:
 	class_device_put(class_dev);
-	kfree(class_name);
 	return error;
 }
 
@@ -726,7 +773,6 @@ void class_device_del(struct class_device *class_dev)
 	struct class *parent_class = class_dev->class;
 	struct class_device *parent_device = class_dev->parent;
 	struct class_interface *class_intf;
-	char *class_name = NULL;
 
 	if (parent_class) {
 		down(&parent_class->sem);
@@ -738,10 +784,8 @@ void class_device_del(struct class_device *class_dev)
 	}
 
 	if (class_dev->dev) {
-		class_name = make_class_name(class_dev->class->name,
-					     &class_dev->kobj);
+		remove_deprecated_class_device_links(class_dev);
 		sysfs_remove_link(&class_dev->kobj, "device");
-		sysfs_remove_link(&class_dev->dev->kobj, class_name);
 	}
 	sysfs_remove_link(&class_dev->kobj, "subsystem");
 	class_device_remove_file(class_dev, &class_dev->uevent_attr);
@@ -755,7 +799,6 @@ void class_device_del(struct class_device *class_dev)
 
 	class_device_put(parent_device);
 	class_put(parent_class);
-	kfree(class_name);
 }
 
 void class_device_unregister(struct class_device *class_dev)
@@ -804,14 +847,17 @@ int class_device_rename(struct class_device *class_dev, char *new_name)
 	pr_debug("CLASS: renaming '%s' to '%s'\n", class_dev->class_id,
 		 new_name);
 
+#ifdef CONFIG_SYSFS_DEPRECATED
 	if (class_dev->dev)
 		old_class_name = make_class_name(class_dev->class->name,
 						 &class_dev->kobj);
+#endif
 
 	strlcpy(class_dev->class_id, new_name, KOBJ_NAME_LEN);
 
 	error = kobject_rename(&class_dev->kobj, new_name);
 
+#ifdef CONFIG_SYSFS_DEPRECATED
 	if (class_dev->dev) {
 		new_class_name = make_class_name(class_dev->class->name,
 						 &class_dev->kobj);
@@ -819,6 +865,7 @@ int class_device_rename(struct class_device *class_dev, char *new_name)
 				  new_class_name);
 		sysfs_remove_link(&class_dev->dev->kobj, old_class_name);
 	}
+#endif
 	class_device_put(class_dev);
 
 	kfree(old_class_name);
@@ -893,23 +940,6 @@ void class_interface_unregister(struct class_interface *class_intf)
 	class_put(parent);
 }
 
-int virtual_device_parent(struct device *dev)
-{
-	if (!dev->class)
-		return -ENODEV;
-
-	if (!dev->class->virtual_dir) {
-		static struct kobject *virtual_dir = NULL;
-
-		if (!virtual_dir)
-			virtual_dir = kobject_add_dir(&devices_subsys.kset.kobj, "virtual");
-		dev->class->virtual_dir = kobject_add_dir(virtual_dir, dev->class->name);
-	}
-
-	dev->kobj.parent = dev->class->virtual_dir;
-	return 0;
-}
-
 int __init classes_init(void)
 {
 	int retval;

drivers/base/dd.c

@@ -26,33 +26,28 @@
 #define to_drv(node) container_of(node, struct device_driver, kobj.entry)
 
 
-/**
- *	device_bind_driver - bind a driver to one device.
- *	@dev:	device.
- *
- *	Allow manual attachment of a driver to a device.
- *	Caller must have already set @dev->driver.
- *
- *	Note that this does not modify the bus reference count
- *	nor take the bus's rwsem. Please verify those are accounted
- *	for before calling this. (It is ok to call with no other effort
- *	from a driver's probe() method.)
- *
- *	This function must be called with @dev->sem held.
- */
-int device_bind_driver(struct device *dev)
+static void driver_bound(struct device *dev)
 {
-	int ret;
-
 	if (klist_node_attached(&dev->knode_driver)) {
 		printk(KERN_WARNING "%s: device %s already bound\n",
 			__FUNCTION__, kobject_name(&dev->kobj));
-		return 0;
+		return;
 	}
 
 	pr_debug("bound device '%s' to driver '%s'\n",
 		 dev->bus_id, dev->driver->name);
+
+	if (dev->bus)
+		blocking_notifier_call_chain(&dev->bus->bus_notifier,
+					     BUS_NOTIFY_BOUND_DRIVER, dev);
+
 	klist_add_tail(&dev->knode_driver, &dev->driver->klist_devices);
+}
+
+static int driver_sysfs_add(struct device *dev)
+{
+	int ret;
+
 	ret = sysfs_create_link(&dev->driver->kobj, &dev->kobj,
 			  kobject_name(&dev->kobj));
 	if (ret == 0) {
@@ -65,6 +60,36 @@ int device_bind_driver(struct device *dev)
 	return ret;
 }
 
+static void driver_sysfs_remove(struct device *dev)
+{
+	struct device_driver *drv = dev->driver;
+
+	if (drv) {
+		sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
+		sysfs_remove_link(&dev->kobj, "driver");
+	}
+}
+
+/**
+ *	device_bind_driver - bind a driver to one device.
+ *	@dev:	device.
+ *
+ *	Allow manual attachment of a driver to a device.
+ *	Caller must have already set @dev->driver.
+ *
+ *	Note that this does not modify the bus reference count
+ *	nor take the bus's rwsem. Please verify those are accounted
+ *	for before calling this. (It is ok to call with no other effort
+ *	from a driver's probe() method.)
+ *
+ *	This function must be called with @dev->sem held.
+ */
+int device_bind_driver(struct device *dev)
+{
+	driver_bound(dev);
+	return driver_sysfs_add(dev);
+}
+
 struct stupid_thread_structure {
 	struct device_driver *drv;
 	struct device *dev;
@@ -85,30 +110,32 @@ static int really_probe(void *void_data)
 		 drv->bus->name, drv->name, dev->bus_id);
 
 	dev->driver = drv;
+	if (driver_sysfs_add(dev)) {
+		printk(KERN_ERR "%s: driver_sysfs_add(%s) failed\n",
+			__FUNCTION__, dev->bus_id);
+		goto probe_failed;
+	}
+
 	if (dev->bus->probe) {
 		ret = dev->bus->probe(dev);
-		if (ret) {
-			dev->driver = NULL;
+		if (ret)
 			goto probe_failed;
-		}
 	} else if (drv->probe) {
 		ret = drv->probe(dev);
-		if (ret) {
-			dev->driver = NULL;
+		if (ret)
 			goto probe_failed;
-		}
-	}
-	if (device_bind_driver(dev)) {
-		printk(KERN_ERR "%s: device_bind_driver(%s) failed\n",
-			__FUNCTION__, dev->bus_id);
-		/* How does undo a ->probe?  We're screwed. */
 	}
+
+	driver_bound(dev);
 	ret = 1;
 	pr_debug("%s: Bound Device %s to Driver %s\n",
 		 drv->bus->name, dev->bus_id, drv->name);
 	goto done;
 
 probe_failed:
+	driver_sysfs_remove(dev);
+	dev->driver = NULL;
+
 	if (ret == -ENODEV || ret == -ENXIO) {
 		/* Driver matched, but didn't support device
 		 * or device not found.
@@ -284,10 +311,15 @@ static void __device_release_driver(struct device * dev)
 	drv = dev->driver;
 	if (drv) {
 		get_driver(drv);
-		sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
+		driver_sysfs_remove(dev);
 		sysfs_remove_link(&dev->kobj, "driver");
 		klist_remove(&dev->knode_driver);
 
+		if (dev->bus)
+			blocking_notifier_call_chain(&dev->bus->bus_notifier,
+						     BUS_NOTIFY_UNBIND_DRIVER,
+						     dev);
+
 		if (dev->bus && dev->bus->remove)
 			dev->bus->remove(dev);
 		else if (drv->remove)

drivers/base/firmware_class.c

@@ -21,6 +21,8 @@
 #include <linux/firmware.h>
 #include "base.h"
 
+#define to_dev(obj) container_of(obj, struct device, kobj)
+
 MODULE_AUTHOR("Manuel Estrada Sainz <ranty@debian.org>");
 MODULE_DESCRIPTION("Multi purpose firmware loading support");
 MODULE_LICENSE("GPL");
@@ -86,12 +88,12 @@ firmware_timeout_store(struct class *class, const char *buf, size_t count)
 
 static CLASS_ATTR(timeout, 0644, firmware_timeout_show, firmware_timeout_store);
 
-static void  fw_class_dev_release(struct class_device *class_dev);
+static void fw_dev_release(struct device *dev);
 
-static int firmware_class_uevent(struct class_device *class_dev, char **envp,
-				 int num_envp, char *buffer, int buffer_size)
+static int firmware_uevent(struct device *dev, char **envp, int num_envp,
+			   char *buffer, int buffer_size)
 {
-	struct firmware_priv *fw_priv = class_get_devdata(class_dev);
+	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
 	int i = 0, len = 0;
 
 	if (!test_bit(FW_STATUS_READY, &fw_priv->status))
@@ -110,21 +112,21 @@ static int firmware_class_uevent(struct class_device *class_dev, char **envp,
 
 static struct class firmware_class = {
 	.name		= "firmware",
-	.uevent		= firmware_class_uevent,
-	.release	= fw_class_dev_release,
+	.dev_uevent	= firmware_uevent,
+	.dev_release	= fw_dev_release,
 };
 
-static ssize_t
-firmware_loading_show(struct class_device *class_dev, char *buf)
+static ssize_t firmware_loading_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
 {
-	struct firmware_priv *fw_priv = class_get_devdata(class_dev);
+	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
 	int loading = test_bit(FW_STATUS_LOADING, &fw_priv->status);
 	return sprintf(buf, "%d\n", loading);
 }
 
 /**
  * firmware_loading_store - set value in the 'loading' control file
- * @class_dev: class_device pointer
+ * @dev: device pointer
  * @buf: buffer to scan for loading control value
  * @count: number of bytes in @buf
  *
@@ -134,11 +136,11 @@ firmware_loading_show(struct class_device *class_dev, char *buf)
  *	 0: Conclude the load and hand the data to the driver code.
  *	-1: Conclude the load with an error and discard any written data.
  **/
-static ssize_t
-firmware_loading_store(struct class_device *class_dev,
-		       const char *buf, size_t count)
+static ssize_t firmware_loading_store(struct device *dev,
+				      struct device_attribute *attr,
+				      const char *buf, size_t count)
 {
-	struct firmware_priv *fw_priv = class_get_devdata(class_dev);
+	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
 	int loading = simple_strtol(buf, NULL, 10);
 
 	switch (loading) {
@@ -174,15 +176,14 @@ firmware_loading_store(struct class_device *class_dev,
 	return count;
 }
 
-static CLASS_DEVICE_ATTR(loading, 0644,
-			firmware_loading_show, firmware_loading_store);
+static DEVICE_ATTR(loading, 0644, firmware_loading_show, firmware_loading_store);
 
 static ssize_t
 firmware_data_read(struct kobject *kobj,
 		   char *buffer, loff_t offset, size_t count)
 {
-	struct class_device *class_dev = to_class_dev(kobj);
-	struct firmware_priv *fw_priv = class_get_devdata(class_dev);
+	struct device *dev = to_dev(kobj);
+	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
 	struct firmware *fw;
 	ssize_t ret_count = count;
 
@@ -234,7 +235,7 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
 
 /**
  * firmware_data_write - write method for firmware
- * @kobj: kobject for the class_device
+ * @kobj: kobject for the device
  * @buffer: buffer being written
  * @offset: buffer offset for write in total data store area
  * @count: buffer size
@@ -246,8 +247,8 @@ static ssize_t
 firmware_data_write(struct kobject *kobj,
 		    char *buffer, loff_t offset, size_t count)
 {
-	struct class_device *class_dev = to_class_dev(kobj);
-	struct firmware_priv *fw_priv = class_get_devdata(class_dev);
+	struct device *dev = to_dev(kobj);
+	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
 	struct firmware *fw;
 	ssize_t retval;
 
@@ -280,13 +281,12 @@ static struct bin_attribute firmware_attr_data_tmpl = {
 	.write = firmware_data_write,
 };
 
-static void
-fw_class_dev_release(struct class_device *class_dev)
+static void fw_dev_release(struct device *dev)
 {
-	struct firmware_priv *fw_priv = class_get_devdata(class_dev);
+	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
 
 	kfree(fw_priv);
-	kfree(class_dev);
+	kfree(dev);
 
 	module_put(THIS_MODULE);
 }
@@ -298,26 +298,23 @@ firmware_class_timeout(u_long data)
 	fw_load_abort(fw_priv);
 }
 
-static inline void
-fw_setup_class_device_id(struct class_device *class_dev, struct device *dev)
+static inline void fw_setup_device_id(struct device *f_dev, struct device *dev)
 {
 	/* XXX warning we should watch out for name collisions */
-	strlcpy(class_dev->class_id, dev->bus_id, BUS_ID_SIZE);
+	strlcpy(f_dev->bus_id, dev->bus_id, BUS_ID_SIZE);
 }
 
-static int
-fw_register_class_device(struct class_device **class_dev_p,
-			 const char *fw_name, struct device *device)
+static int fw_register_device(struct device **dev_p, const char *fw_name,
+			      struct device *device)
 {
 	int retval;
 	struct firmware_priv *fw_priv = kzalloc(sizeof(*fw_priv),
 						GFP_KERNEL);
-	struct class_device *class_dev = kzalloc(sizeof(*class_dev),
-						 GFP_KERNEL);
+	struct device *f_dev = kzalloc(sizeof(*f_dev), GFP_KERNEL);
 
-	*class_dev_p = NULL;
+	*dev_p = NULL;
 
-	if (!fw_priv || !class_dev) {
+	if (!fw_priv || !f_dev) {
 		printk(KERN_ERR "%s: kmalloc failed\n", __FUNCTION__);
 		retval = -ENOMEM;
 		goto error_kfree;
@@ -331,55 +328,54 @@ fw_register_class_device(struct class_device **class_dev_p,
 	fw_priv->timeout.data = (u_long) fw_priv;
 	init_timer(&fw_priv->timeout);
 
-	fw_setup_class_device_id(class_dev, device);
-	class_dev->dev = device;
-	class_dev->class = &firmware_class;
-	class_set_devdata(class_dev, fw_priv);
-	retval = class_device_register(class_dev);
+	fw_setup_device_id(f_dev, device);
+	f_dev->parent = device;
+	f_dev->class = &firmware_class;
+	dev_set_drvdata(f_dev, fw_priv);
+	retval = device_register(f_dev);
 	if (retval) {
-		printk(KERN_ERR "%s: class_device_register failed\n",
+		printk(KERN_ERR "%s: device_register failed\n",
 		       __FUNCTION__);
 		goto error_kfree;
 	}
-	*class_dev_p = class_dev;
+	*dev_p = f_dev;
 	return 0;
 
 error_kfree:
 	kfree(fw_priv);
-	kfree(class_dev);
+	kfree(f_dev);
 	return retval;
 }
 
-static int
-fw_setup_class_device(struct firmware *fw, struct class_device **class_dev_p,
-		      const char *fw_name, struct device *device, int uevent)
+static int fw_setup_device(struct firmware *fw, struct device **dev_p,
+			   const char *fw_name, struct device *device,
+			   int uevent)
 {
-	struct class_device *class_dev;
+	struct device *f_dev;
 	struct firmware_priv *fw_priv;
 	int retval;
 
-	*class_dev_p = NULL;
-	retval = fw_register_class_device(&class_dev, fw_name, device);
+	*dev_p = NULL;
+	retval = fw_register_device(&f_dev, fw_name, device);
 	if (retval)
 		goto out;
 
 	/* Need to pin this module until class device is destroyed */
 	__module_get(THIS_MODULE);
 
-	fw_priv = class_get_devdata(class_dev);
+	fw_priv = dev_get_drvdata(f_dev);
 
 	fw_priv->fw = fw;
-	retval = sysfs_create_bin_file(&class_dev->kobj, &fw_priv->attr_data);
+	retval = sysfs_create_bin_file(&f_dev->kobj, &fw_priv->attr_data);
 	if (retval) {
 		printk(KERN_ERR "%s: sysfs_create_bin_file failed\n",
 		       __FUNCTION__);
 		goto error_unreg;
 	}
 
-	retval = class_device_create_file(class_dev,
-					  &class_device_attr_loading);
+	retval = device_create_file(f_dev, &dev_attr_loading);
 	if (retval) {
-		printk(KERN_ERR "%s: class_device_create_file failed\n",
+		printk(KERN_ERR "%s: device_create_file failed\n",
 		       __FUNCTION__);
 		goto error_unreg;
 	}
@@ -388,11 +384,11 @@ fw_setup_class_device(struct firmware *fw, struct class_device **class_dev_p,
                 set_bit(FW_STATUS_READY, &fw_priv->status);
         else
                 set_bit(FW_STATUS_READY_NOHOTPLUG, &fw_priv->status);
-	*class_dev_p = class_dev;
+	*dev_p = f_dev;
 	goto out;
 
 error_unreg:
-	class_device_unregister(class_dev);
+	device_unregister(f_dev);
 out:
 	return retval;
 }
@@ -401,7 +397,7 @@ static int
 _request_firmware(const struct firmware **firmware_p, const char *name,
 		 struct device *device, int uevent)
 {
-	struct class_device *class_dev;
+	struct device *f_dev;
 	struct firmware_priv *fw_priv;
 	struct firmware *firmware;
 	int retval;
@@ -417,12 +413,11 @@ _request_firmware(const struct firmware **firmware_p, const char *name,
 		goto out;
 	}
 
-	retval = fw_setup_class_device(firmware, &class_dev, name, device,
-				       uevent);
+	retval = fw_setup_device(firmware, &f_dev, name, device, uevent);
 	if (retval)
 		goto error_kfree_fw;
 
-	fw_priv = class_get_devdata(class_dev);
+	fw_priv = dev_get_drvdata(f_dev);
 
 	if (uevent) {
 		if (loading_timeout > 0) {
@@ -430,7 +425,7 @@ _request_firmware(const struct firmware **firmware_p, const char *name,
 			add_timer(&fw_priv->timeout);
 		}
 
-		kobject_uevent(&class_dev->kobj, KOBJ_ADD);
+		kobject_uevent(&f_dev->kobj, KOBJ_ADD);
 		wait_for_completion(&fw_priv->completion);
 		set_bit(FW_STATUS_DONE, &fw_priv->status);
 		del_timer_sync(&fw_priv->timeout);
@@ -445,7 +440,7 @@ _request_firmware(const struct firmware **firmware_p, const char *name,
 	}
 	fw_priv->fw = NULL;
 	mutex_unlock(&fw_lock);
-	class_device_unregister(class_dev);
+	device_unregister(f_dev);
 	goto out;
 
 error_kfree_fw:

drivers/base/platform.c

@@ -388,6 +388,11 @@ static int platform_drv_probe(struct device *_dev)
 	return drv->probe(dev);
 }
 
+static int platform_drv_probe_fail(struct device *_dev)
+{
+	return -ENXIO;
+}
+
 static int platform_drv_remove(struct device *_dev)
 {
 	struct platform_driver *drv = to_platform_driver(_dev->driver);
@@ -451,6 +456,49 @@ void platform_driver_unregister(struct platform_driver *drv)
 }
 EXPORT_SYMBOL_GPL(platform_driver_unregister);
 
+/**
+ * platform_driver_probe - register driver for non-hotpluggable device
+ * @drv: platform driver structure
+ * @probe: the driver probe routine, probably from an __init section
+ *
+ * Use this instead of platform_driver_register() when you know the device
+ * is not hotpluggable and has already been registered, and you want to
+ * remove its run-once probe() infrastructure from memory after the driver
+ * has bound to the device.
+ *
+ * One typical use for this would be with drivers for controllers integrated
+ * into system-on-chip processors, where the controller devices have been
+ * configured as part of board setup.
+ *
+ * Returns zero if the driver registered and bound to a device, else returns
+ * a negative error code and with the driver not registered.
+ */
+int platform_driver_probe(struct platform_driver *drv,
+		int (*probe)(struct platform_device *))
+{
+	int retval, code;
+
+	/* temporary section violation during probe() */
+	drv->probe = probe;
+	retval = code = platform_driver_register(drv);
+
+	/* Fixup that section violation, being paranoid about code scanning
+	 * the list of drivers in order to probe new devices.  Check to see
+	 * if the probe was successful, and make sure any forced probes of
+	 * new devices fail.
+	 */
+	spin_lock(&platform_bus_type.klist_drivers.k_lock);
+	drv->probe = NULL;
+	if (code == 0 && list_empty(&drv->driver.klist_devices.k_list))
+		retval = -ENODEV;
+	drv->driver.probe = platform_drv_probe_fail;
+	spin_unlock(&platform_bus_type.klist_drivers.k_lock);
+
+	if (code != retval)
+		platform_driver_unregister(drv);
+	return retval;
+}
+EXPORT_SYMBOL_GPL(platform_driver_probe);
 
 /* modalias support enables more hands-off userspace setup:
  * (a) environment variable lets new-style hotplug events work once system is

drivers/base/topology.c

@@ -94,54 +94,63 @@ static struct attribute_group topology_attr_group = {
 	.name = "topology"
 };
 
+static cpumask_t topology_dev_map = CPU_MASK_NONE;
+
 /* Add/Remove cpu_topology interface for CPU device */
-static int __cpuinit topology_add_dev(struct sys_device * sys_dev)
+static int __cpuinit topology_add_dev(unsigned int cpu)
 {
-	return sysfs_create_group(&sys_dev->kobj, &topology_attr_group);
+	int rc;
+	struct sys_device *sys_dev = get_cpu_sysdev(cpu);
+
+	rc = sysfs_create_group(&sys_dev->kobj, &topology_attr_group);
+	if (!rc)
+		cpu_set(cpu, topology_dev_map);
+	return rc;
 }
 
-static int __cpuinit topology_remove_dev(struct sys_device * sys_dev)
+#ifdef CONFIG_HOTPLUG_CPU
+static void __cpuinit topology_remove_dev(unsigned int cpu)
 {
+	struct sys_device *sys_dev = get_cpu_sysdev(cpu);
+
+	if (!cpu_isset(cpu, topology_dev_map))
+		return;
+	cpu_clear(cpu, topology_dev_map);
 	sysfs_remove_group(&sys_dev->kobj, &topology_attr_group);
-	return 0;
 }
 
 static int __cpuinit topology_cpu_callback(struct notifier_block *nfb,
-		unsigned long action, void *hcpu)
+					   unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
-	struct sys_device *sys_dev;
+	int rc = 0;
 
-	sys_dev = get_cpu_sysdev(cpu);
 	switch (action) {
-	case CPU_ONLINE:
-		topology_add_dev(sys_dev);
+	case CPU_UP_PREPARE:
+		rc = topology_add_dev(cpu);
 		break;
+	case CPU_UP_CANCELED:
 	case CPU_DEAD:
-		topology_remove_dev(sys_dev);
+		topology_remove_dev(cpu);
 		break;
 	}
-	return NOTIFY_OK;
+	return rc ? NOTIFY_BAD : NOTIFY_OK;
 }
-
-static struct notifier_block __cpuinitdata topology_cpu_notifier =
-{
-	.notifier_call = topology_cpu_callback,
-};
+#endif
 
 static int __cpuinit topology_sysfs_init(void)
 {
-	int i;
+	int cpu;
+	int rc;
 
-	for_each_online_cpu(i) {
-		topology_cpu_callback(&topology_cpu_notifier, CPU_ONLINE,
-				(void *)(long)i);
+	for_each_online_cpu(cpu) {
+		rc = topology_add_dev(cpu);
+		if (rc)
+			return rc;
 	}
-
-	register_hotcpu_notifier(&topology_cpu_notifier);
+	hotcpu_notifier(topology_cpu_callback, 0);
 
 	return 0;
 }
 
 device_initcall(topology_sysfs_init);
-

drivers/char/hw_random/core.c

@@ -162,7 +162,8 @@ static struct miscdevice rng_miscdev = {
 };
 
 
-static ssize_t hwrng_attr_current_store(struct class_device *class,
+static ssize_t hwrng_attr_current_store(struct device *dev,
+					struct device_attribute *attr,
 					const char *buf, size_t len)
 {
 	int err;
@@ -192,7 +193,8 @@ static ssize_t hwrng_attr_current_store(struct class_device *class,
 	return err ? : len;
 }
 
-static ssize_t hwrng_attr_current_show(struct class_device *class,
+static ssize_t hwrng_attr_current_show(struct device *dev,
+				       struct device_attribute *attr,
 				       char *buf)
 {
 	int err;
@@ -210,7 +212,8 @@ static ssize_t hwrng_attr_current_show(struct class_device *class,
 	return ret;
 }
 
-static ssize_t hwrng_attr_available_show(struct class_device *class,
+static ssize_t hwrng_attr_available_show(struct device *dev,
+					 struct device_attribute *attr,
 					 char *buf)
 {
 	int err;
@@ -234,20 +237,18 @@ static ssize_t hwrng_attr_available_show(struct class_device *class,
 	return ret;
 }
 
-static CLASS_DEVICE_ATTR(rng_current, S_IRUGO | S_IWUSR,
-			 hwrng_attr_current_show,
-			 hwrng_attr_current_store);
-static CLASS_DEVICE_ATTR(rng_available, S_IRUGO,
-			 hwrng_attr_available_show,
-			 NULL);
+static DEVICE_ATTR(rng_current, S_IRUGO | S_IWUSR,
+		   hwrng_attr_current_show,
+		   hwrng_attr_current_store);
+static DEVICE_ATTR(rng_available, S_IRUGO,
+		   hwrng_attr_available_show,
+		   NULL);
 
 
 static void unregister_miscdev(void)
 {
-	class_device_remove_file(rng_miscdev.class,
-				 &class_device_attr_rng_available);
-	class_device_remove_file(rng_miscdev.class,
-				 &class_device_attr_rng_current);
+	device_remove_file(rng_miscdev.this_device, &dev_attr_rng_available);
+	device_remove_file(rng_miscdev.this_device, &dev_attr_rng_current);
 	misc_deregister(&rng_miscdev);
 }
 
@@ -258,20 +259,19 @@ static int register_miscdev(void)
 	err = misc_register(&rng_miscdev);
 	if (err)
 		goto out;
-	err = class_device_create_file(rng_miscdev.class,
-				       &class_device_attr_rng_current);
+	err = device_create_file(rng_miscdev.this_device,
+				 &dev_attr_rng_current);
 	if (err)
 		goto err_misc_dereg;
-	err = class_device_create_file(rng_miscdev.class,
-				       &class_device_attr_rng_available);
+	err = device_create_file(rng_miscdev.this_device,
+				 &dev_attr_rng_available);
 	if (err)
 		goto err_remove_current;
 out:
 	return err;
 
 err_remove_current:
-	class_device_remove_file(rng_miscdev.class,
-				 &class_device_attr_rng_current);
+	device_remove_file(rng_miscdev.this_device, &dev_attr_rng_current);
 err_misc_dereg:
 	misc_deregister(&rng_miscdev);
 	goto out;

drivers/char/mem.c

@@ -980,10 +980,10 @@ static int __init chr_dev_init(void)
 
 	mem_class = class_create(THIS_MODULE, "mem");
 	for (i = 0; i < ARRAY_SIZE(devlist); i++)
-		class_device_create(mem_class, NULL,
-					MKDEV(MEM_MAJOR, devlist[i].minor),
-					NULL, devlist[i].name);
-	
+		device_create(mem_class, NULL,
+			      MKDEV(MEM_MAJOR, devlist[i].minor),
+			      devlist[i].name);
+
 	return 0;
 }
 

drivers/char/misc.c

@@ -169,11 +169,6 @@ static int misc_open(struct inode * inode, struct file * file)
 	return err;
 }
 
-/* 
- * TODO for 2.7:
- *  - add a struct kref to struct miscdevice and make all usages of
- *    them dynamic.
- */
 static struct class *misc_class;
 
 static const struct file_operations misc_fops = {
@@ -228,10 +223,10 @@ int misc_register(struct miscdevice * misc)
 		misc_minors[misc->minor >> 3] |= 1 << (misc->minor & 7);
 	dev = MKDEV(MISC_MAJOR, misc->minor);
 
-	misc->class = class_device_create(misc_class, NULL, dev, misc->dev,
+	misc->this_device = device_create(misc_class, misc->parent, dev,
 					  "%s", misc->name);
-	if (IS_ERR(misc->class)) {
-		err = PTR_ERR(misc->class);
+	if (IS_ERR(misc->this_device)) {
+		err = PTR_ERR(misc->this_device);
 		goto out;
 	}
 
@@ -264,7 +259,7 @@ int misc_deregister(struct miscdevice * misc)
 
 	down(&misc_sem);
 	list_del(&misc->list);
-	class_device_destroy(misc_class, MKDEV(MISC_MAJOR, misc->minor));
+	device_destroy(misc_class, MKDEV(MISC_MAJOR, misc->minor));
 	if (i < DYNAMIC_MINORS && i>0) {
 		misc_minors[i>>3] &= ~(1 << (misc->minor & 7));
 	}

drivers/char/ppdev.c

@@ -752,13 +752,13 @@ static const struct file_operations pp_fops = {
 
 static void pp_attach(struct parport *port)
 {
-	class_device_create(ppdev_class, NULL, MKDEV(PP_MAJOR, port->number),
-			NULL, "parport%d", port->number);
+	device_create(ppdev_class, NULL, MKDEV(PP_MAJOR, port->number),
+			"parport%d", port->number);
 }
 
 static void pp_detach(struct parport *port)
 {
-	class_device_destroy(ppdev_class, MKDEV(PP_MAJOR, port->number));
+	device_destroy(ppdev_class, MKDEV(PP_MAJOR, port->number));
 }
 
 static struct parport_driver pp_driver = {

drivers/char/raw.c

@@ -127,9 +127,9 @@ raw_ioctl(struct inode *inode, struct file *filp,
 
 static void bind_device(struct raw_config_request *rq)
 {
-	class_device_destroy(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor));
-	class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor),
-				      NULL, "raw%d", rq->raw_minor);
+	device_destroy(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor));
+	device_create(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor),
+		      "raw%d", rq->raw_minor);
 }
 
 /*
@@ -200,7 +200,7 @@ static int raw_ctl_ioctl(struct inode *inode, struct file *filp,
 			if (rq.block_major == 0 && rq.block_minor == 0) {
 				/* unbind */
 				rawdev->binding = NULL;
-				class_device_destroy(raw_class,
+				device_destroy(raw_class,
 						MKDEV(RAW_MAJOR, rq.raw_minor));
 			} else {
 				rawdev->binding = bdget(dev);
@@ -283,7 +283,7 @@ static int __init raw_init(void)
 		ret = PTR_ERR(raw_class);
 		goto error_region;
 	}
-	class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl");
+	device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), "rawctl");
 
 	return 0;
 
@@ -295,7 +295,7 @@ static int __init raw_init(void)
 
 static void __exit raw_exit(void)
 {
-	class_device_destroy(raw_class, MKDEV(RAW_MAJOR, 0));
+	device_destroy(raw_class, MKDEV(RAW_MAJOR, 0));
 	class_destroy(raw_class);
 	cdev_del(&raw_cdev);
 	unregister_chrdev_region(MKDEV(RAW_MAJOR, 0), MAX_RAW_MINORS);

drivers/char/tpm/tpm.c

@@ -1130,7 +1130,7 @@ struct tpm_chip *tpm_register_hardware(struct device *dev, const struct tpm_vend
 	scnprintf(devname, DEVNAME_SIZE, "%s%d", "tpm", chip->dev_num);
 	chip->vendor.miscdev.name = devname;
 
-	chip->vendor.miscdev.dev = dev;
+	chip->vendor.miscdev.parent = dev;
 	chip->dev = get_device(dev);
 
 	if (misc_register(&chip->vendor.miscdev)) {

drivers/char/tty_io.c

@@ -3612,7 +3612,8 @@ static struct class *tty_class;
  *		This field is optional, if there is no known struct device
  *		for this tty device it can be set to NULL safely.
  *
- *	Returns a pointer to the class device (or ERR_PTR(-EFOO) on error).
+ *	Returns a pointer to the struct device for this tty device
+ *	(or ERR_PTR(-EFOO) on error).
  *
  *	This call is required to be made to register an individual tty device
  *	if the tty driver's flags have the TTY_DRIVER_DYNAMIC_DEV bit set.  If
@@ -3622,8 +3623,8 @@ static struct class *tty_class;
  *	Locking: ??
  */
 
-struct class_device *tty_register_device(struct tty_driver *driver,
-					 unsigned index, struct device *device)
+struct device *tty_register_device(struct tty_driver *driver, unsigned index,
+				   struct device *device)
 {
 	char name[64];
 	dev_t dev = MKDEV(driver->major, driver->minor_start) + index;
@@ -3639,7 +3640,7 @@ struct class_device *tty_register_device(struct tty_driver *driver,
 	else
 		tty_line_name(driver, index, name);
 
-	return class_device_create(tty_class, NULL, dev, device, "%s", name);
+	return device_create(tty_class, device, dev, name);
 }
 
 /**
@@ -3655,7 +3656,7 @@ struct class_device *tty_register_device(struct tty_driver *driver,
 
 void tty_unregister_device(struct tty_driver *driver, unsigned index)
 {
-	class_device_destroy(tty_class, MKDEV(driver->major, driver->minor_start) + index);
+	device_destroy(tty_class, MKDEV(driver->major, driver->minor_start) + index);
 }
 
 EXPORT_SYMBOL(tty_register_device);
@@ -3895,20 +3896,20 @@ static int __init tty_init(void)
 	if (cdev_add(&tty_cdev, MKDEV(TTYAUX_MAJOR, 0), 1) ||
 	    register_chrdev_region(MKDEV(TTYAUX_MAJOR, 0), 1, "/dev/tty") < 0)
 		panic("Couldn't register /dev/tty driver\n");
-	class_device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 0), NULL, "tty");
+	device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 0), "tty");
 
 	cdev_init(&console_cdev, &console_fops);
 	if (cdev_add(&console_cdev, MKDEV(TTYAUX_MAJOR, 1), 1) ||
 	    register_chrdev_region(MKDEV(TTYAUX_MAJOR, 1), 1, "/dev/console") < 0)
 		panic("Couldn't register /dev/console driver\n");
-	class_device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 1), NULL, "console");
+	device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 1), "console");
 
 #ifdef CONFIG_UNIX98_PTYS
 	cdev_init(&ptmx_cdev, &ptmx_fops);
 	if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) ||
 	    register_chrdev_region(MKDEV(TTYAUX_MAJOR, 2), 1, "/dev/ptmx") < 0)
 		panic("Couldn't register /dev/ptmx driver\n");
-	class_device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 2), NULL, "ptmx");
+	device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 2), "ptmx");
 #endif
 
 #ifdef CONFIG_VT
@@ -3916,7 +3917,7 @@ static int __init tty_init(void)
 	if (cdev_add(&vc0_cdev, MKDEV(TTY_MAJOR, 0), 1) ||
 	    register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1, "/dev/vc/0") < 0)
 		panic("Couldn't register /dev/tty0 driver\n");
-	class_device_create(tty_class, NULL, MKDEV(TTY_MAJOR, 0), NULL, "tty0");
+	device_create(tty_class, NULL, MKDEV(TTY_MAJOR, 0), "tty0");
 
 	vty_init();
 #endif

drivers/char/vc_screen.c

@@ -476,16 +476,16 @@ static struct class *vc_class;
 
 void vcs_make_sysfs(struct tty_struct *tty)
 {
-	class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 1),
-			NULL, "vcs%u", tty->index + 1);
-	class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 129),
-			NULL, "vcsa%u", tty->index + 1);
+	device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 1),
+			"vcs%u", tty->index + 1);
+	device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 129),
+			"vcsa%u", tty->index + 1);
 }
 
 void vcs_remove_sysfs(struct tty_struct *tty)
 {
-	class_device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 1));
-	class_device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 129));
+	device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 1));
+	device_destroy(vc_class, MKDEV(VCS_MAJOR, tty->index + 129));
 }
 
 int __init vcs_init(void)
@@ -494,7 +494,7 @@ int __init vcs_init(void)
 		panic("unable to get major %d for vcs device", VCS_MAJOR);
 	vc_class = class_create(THIS_MODULE, "vc");
 
-	class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 0), NULL, "vcs");
-	class_device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 128), NULL, "vcsa");
+	device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 0), "vcs");
+	device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 128), "vcsa");
 	return 0;
 }

drivers/char/vt.c

@@ -112,7 +112,7 @@
 struct con_driver {
 	const struct consw *con;
 	const char *desc;
-	struct class_device *class_dev;
+	struct device *dev;
 	int node;
 	int first;
 	int last;
@@ -3023,10 +3023,10 @@ static inline int vt_unbind(struct con_driver *con)
 }
 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */
 
-static ssize_t store_bind(struct class_device *class_device,
+static ssize_t store_bind(struct device *dev, struct device_attribute *attr,
 			  const char *buf, size_t count)
 {
-	struct con_driver *con = class_get_devdata(class_device);
+	struct con_driver *con = dev_get_drvdata(dev);
 	int bind = simple_strtoul(buf, NULL, 0);
 
 	if (bind)
@@ -3037,17 +3037,19 @@ static ssize_t store_bind(struct class_device *class_device,
 	return count;
 }
 
-static ssize_t show_bind(struct class_device *class_device, char *buf)
+static ssize_t show_bind(struct device *dev, struct device_attribute *attr,
+			 char *buf)
 {
-	struct con_driver *con = class_get_devdata(class_device);
+	struct con_driver *con = dev_get_drvdata(dev);
 	int bind = con_is_bound(con->con);
 
 	return snprintf(buf, PAGE_SIZE, "%i\n", bind);
 }
 
-static ssize_t show_name(struct class_device *class_device, char *buf)
+static ssize_t show_name(struct device *dev, struct device_attribute *attr,
+			 char *buf)
 {
-	struct con_driver *con = class_get_devdata(class_device);
+	struct con_driver *con = dev_get_drvdata(dev);
 
 	return snprintf(buf, PAGE_SIZE, "%s %s\n",
 			(con->flag & CON_DRIVER_FLAG_MODULE) ? "(M)" : "(S)",
@@ -3055,43 +3057,40 @@ static ssize_t show_name(struct class_device *class_device, char *buf)
 
 }
 
-static struct class_device_attribute class_device_attrs[] = {
+static struct device_attribute device_attrs[] = {
 	__ATTR(bind, S_IRUGO|S_IWUSR, show_bind, store_bind),
 	__ATTR(name, S_IRUGO, show_name, NULL),
 };
 
-static int vtconsole_init_class_device(struct con_driver *con)
+static int vtconsole_init_device(struct con_driver *con)
 {
 	int i;
 	int error = 0;
 
 	con->flag |= CON_DRIVER_FLAG_ATTR;
-	class_set_devdata(con->class_dev, con);
-	for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++) {
-		error = class_device_create_file(con->class_dev,
-					 &class_device_attrs[i]);
+	dev_set_drvdata(con->dev, con);
+	for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
+		error = device_create_file(con->dev, &device_attrs[i]);
 		if (error)
 			break;
 	}
 
 	if (error) {
 		while (--i >= 0)
-			class_device_remove_file(con->class_dev,
-					 &class_device_attrs[i]);
+			device_remove_file(con->dev, &device_attrs[i]);
 		con->flag &= ~CON_DRIVER_FLAG_ATTR;
 	}
 
 	return error;
 }
 
-static void vtconsole_deinit_class_device(struct con_driver *con)
+static void vtconsole_deinit_device(struct con_driver *con)
 {
 	int i;
 
 	if (con->flag & CON_DRIVER_FLAG_ATTR) {
-		for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
-			class_device_remove_file(con->class_dev,
-						 &class_device_attrs[i]);
+		for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
+			device_remove_file(con->dev, &device_attrs[i]);
 		con->flag &= ~CON_DRIVER_FLAG_ATTR;
 	}
 }
@@ -3179,18 +3178,17 @@ int register_con_driver(const struct consw *csw, int first, int last)
 	if (retval)
 		goto err;
 
-	con_driver->class_dev = class_device_create(vtconsole_class, NULL,
-						    MKDEV(0, con_driver->node),
-						    NULL, "vtcon%i",
-						    con_driver->node);
+	con_driver->dev = device_create(vtconsole_class, NULL,
+					MKDEV(0, con_driver->node),
+					"vtcon%i", con_driver->node);
 
-	if (IS_ERR(con_driver->class_dev)) {
-		printk(KERN_WARNING "Unable to create class_device for %s; "
+	if (IS_ERR(con_driver->dev)) {
+		printk(KERN_WARNING "Unable to create device for %s; "
 		       "errno = %ld\n", con_driver->desc,
-		       PTR_ERR(con_driver->class_dev));
-		con_driver->class_dev = NULL;
+		       PTR_ERR(con_driver->dev));
+		con_driver->dev = NULL;
 	} else {
-		vtconsole_init_class_device(con_driver);
+		vtconsole_init_device(con_driver);
 	}
 
 err:
@@ -3226,12 +3224,12 @@ int unregister_con_driver(const struct consw *csw)
 
 		if (con_driver->con == csw &&
 		    con_driver->flag & CON_DRIVER_FLAG_MODULE) {
-			vtconsole_deinit_class_device(con_driver);
-			class_device_destroy(vtconsole_class,
-					     MKDEV(0, con_driver->node));
+			vtconsole_deinit_device(con_driver);
+			device_destroy(vtconsole_class,
+				       MKDEV(0, con_driver->node));
 			con_driver->con = NULL;
 			con_driver->desc = NULL;
-			con_driver->class_dev = NULL;
+			con_driver->dev = NULL;
 			con_driver->node = 0;
 			con_driver->flag = 0;
 			con_driver->first = 0;
@@ -3289,19 +3287,18 @@ static int __init vtconsole_class_init(void)
 	for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
 		struct con_driver *con = &registered_con_driver[i];
 
-		if (con->con && !con->class_dev) {
-			con->class_dev =
-				class_device_create(vtconsole_class, NULL,
-						    MKDEV(0, con->node), NULL,
-						    "vtcon%i", con->node);
+		if (con->con && !con->dev) {
+			con->dev = device_create(vtconsole_class, NULL,
+						 MKDEV(0, con->node),
+						 "vtcon%i", con->node);
 
-			if (IS_ERR(con->class_dev)) {
+			if (IS_ERR(con->dev)) {
 				printk(KERN_WARNING "Unable to create "
-				       "class_device for %s; errno = %ld\n",
-				       con->desc, PTR_ERR(con->class_dev));
-				con->class_dev = NULL;
+				       "device for %s; errno = %ld\n",
+				       con->desc, PTR_ERR(con->dev));
+				con->dev = NULL;
 			} else {
-				vtconsole_init_class_device(con);
+				vtconsole_init_device(con);
 			}
 		}
 	}

drivers/i2c/i2c-dev.c

@@ -42,7 +42,7 @@ static struct i2c_driver i2cdev_driver;
 struct i2c_dev {
 	struct list_head list;
 	struct i2c_adapter *adap;
-	struct class_device *class_dev;
+	struct device *dev;
 };
 
 #define I2C_MINORS	256
@@ -92,15 +92,16 @@ static void return_i2c_dev(struct i2c_dev *i2c_dev)
 	spin_unlock(&i2c_dev_list_lock);
 }
 
-static ssize_t show_adapter_name(struct class_device *class_dev, char *buf)
+static ssize_t show_adapter_name(struct device *dev,
+				 struct device_attribute *attr, char *buf)
 {
-	struct i2c_dev *i2c_dev = i2c_dev_get_by_minor(MINOR(class_dev->devt));
+	struct i2c_dev *i2c_dev = i2c_dev_get_by_minor(MINOR(dev->devt));
 
 	if (!i2c_dev)
 		return -ENODEV;
 	return sprintf(buf, "%s\n", i2c_dev->adap->name);
 }
-static CLASS_DEVICE_ATTR(name, S_IRUGO, show_adapter_name, NULL);
+static DEVICE_ATTR(name, S_IRUGO, show_adapter_name, NULL);
 
 static ssize_t i2cdev_read (struct file *file, char __user *buf, size_t count,
                             loff_t *offset)
@@ -413,15 +414,14 @@ static int i2cdev_attach_adapter(struct i2c_adapter *adap)
 		return PTR_ERR(i2c_dev);
 
 	/* register this i2c device with the driver core */
-	i2c_dev->class_dev = class_device_create(i2c_dev_class, NULL,
-						 MKDEV(I2C_MAJOR, adap->nr),
-						 &adap->dev, "i2c-%d",
-						 adap->nr);
-	if (!i2c_dev->class_dev) {
+	i2c_dev->dev = device_create(i2c_dev_class, &adap->dev,
+				     MKDEV(I2C_MAJOR, adap->nr),
+				     "i2c-%d", adap->nr);
+	if (!i2c_dev->dev) {
 		res = -ENODEV;
 		goto error;
 	}
-	res = class_device_create_file(i2c_dev->class_dev, &class_device_attr_name);
+	res = device_create_file(i2c_dev->dev, &dev_attr_name);
 	if (res)
 		goto error_destroy;
 
@@ -429,7 +429,7 @@ static int i2cdev_attach_adapter(struct i2c_adapter *adap)
 		 adap->name, adap->nr);
 	return 0;
 error_destroy:
-	class_device_destroy(i2c_dev_class, MKDEV(I2C_MAJOR, adap->nr));
+	device_destroy(i2c_dev_class, MKDEV(I2C_MAJOR, adap->nr));
 error:
 	return_i2c_dev(i2c_dev);
 	kfree(i2c_dev);
@@ -444,9 +444,9 @@ static int i2cdev_detach_adapter(struct i2c_adapter *adap)
 	if (!i2c_dev) /* attach_adapter must have failed */
 		return 0;
 
-	class_device_remove_file(i2c_dev->class_dev, &class_device_attr_name);
+	device_remove_file(i2c_dev->dev, &dev_attr_name);
 	return_i2c_dev(i2c_dev);
-	class_device_destroy(i2c_dev_class, MKDEV(I2C_MAJOR, adap->nr));
+	device_destroy(i2c_dev_class, MKDEV(I2C_MAJOR, adap->nr));
 	kfree(i2c_dev);
 
 	pr_debug("i2c-dev: adapter [%s] unregistered\n", adap->name);

drivers/input/serio/serio_raw.c

@@ -297,7 +297,7 @@ static int serio_raw_connect(struct serio *serio, struct serio_driver *drv)
 
 	serio_raw->dev.minor = PSMOUSE_MINOR;
 	serio_raw->dev.name = serio_raw->name;
-	serio_raw->dev.dev = &serio->dev;
+	serio_raw->dev.parent = &serio->dev;
 	serio_raw->dev.fops = &serio_raw_fops;
 
 	err = misc_register(&serio_raw->dev);

drivers/isdn/gigaset/common.c

@@ -702,7 +702,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
 	cs->open_count = 0;
 	cs->dev = NULL;
 	cs->tty = NULL;
-	cs->class = NULL;
+	cs->tty_dev = NULL;
 	cs->cidmode = cidmode != 0;
 
 	//if(onechannel) { //FIXME

drivers/isdn/gigaset/gigaset.h

@@ -444,7 +444,7 @@ struct cardstate {
 	struct gigaset_driver *driver;
 	unsigned minor_index;
 	struct device *dev;
-	struct class_device *class;
+	struct device *tty_dev;
 
 	const struct gigaset_ops *ops;
 

drivers/isdn/gigaset/interface.c

@@ -625,13 +625,13 @@ void gigaset_if_init(struct cardstate *cs)
 		return;
 
 	tasklet_init(&cs->if_wake_tasklet, &if_wake, (unsigned long) cs);
-	cs->class = tty_register_device(drv->tty, cs->minor_index, NULL);
+	cs->tty_dev = tty_register_device(drv->tty, cs->minor_index, NULL);
 
-	if (!IS_ERR(cs->class))
-		class_set_devdata(cs->class, cs);
+	if (!IS_ERR(cs->tty_dev))
+		dev_set_drvdata(cs->tty_dev, cs);
 	else {
 		warn("could not register device to the tty subsystem");
-		cs->class = NULL;
+		cs->tty_dev = NULL;
 	}
 }
 
@@ -645,7 +645,7 @@ void gigaset_if_free(struct cardstate *cs)
 
 	tasklet_disable(&cs->if_wake_tasklet);
 	tasklet_kill(&cs->if_wake_tasklet);
-	cs->class = NULL;
+	cs->tty_dev = NULL;
 	tty_unregister_device(drv->tty, cs->minor_index);
 }
 

drivers/isdn/gigaset/proc.c

@@ -16,11 +16,12 @@
 #include "gigaset.h"
 #include <linux/ctype.h>
 
-static ssize_t show_cidmode(struct class_device *class, char *buf)
+static ssize_t show_cidmode(struct device *dev,
+			    struct device_attribute *attr, char *buf)
 {
 	int ret;
 	unsigned long flags;
-	struct cardstate *cs = class_get_devdata(class);
+	struct cardstate *cs = dev_get_drvdata(dev);
 
 	spin_lock_irqsave(&cs->lock, flags);
 	ret = sprintf(buf, "%u\n", cs->cidmode);
@@ -29,10 +30,10 @@ static ssize_t show_cidmode(struct class_device *class, char *buf)
 	return ret;
 }
 
-static ssize_t set_cidmode(struct class_device *class,
+static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr,
 			   const char *buf, size_t count)
 {
-	struct cardstate *cs = class_get_devdata(class);
+	struct cardstate *cs = dev_get_drvdata(dev);
 	long int value;
 	char *end;
 
@@ -64,25 +65,25 @@ static ssize_t set_cidmode(struct class_device *class,
 	return count;
 }
 
-static CLASS_DEVICE_ATTR(cidmode, S_IRUGO|S_IWUSR, show_cidmode, set_cidmode);
+static DEVICE_ATTR(cidmode, S_IRUGO|S_IWUSR, show_cidmode, set_cidmode);
 
 /* free sysfs for device */
 void gigaset_free_dev_sysfs(struct cardstate *cs)
 {
-	if (!cs->class)
+	if (!cs->tty_dev)
 		return;
 
 	gig_dbg(DEBUG_INIT, "removing sysfs entries");
-	class_device_remove_file(cs->class, &class_device_attr_cidmode);
+	device_remove_file(cs->tty_dev, &dev_attr_cidmode);
 }
 
 /* initialize sysfs for device */
 void gigaset_init_dev_sysfs(struct cardstate *cs)
 {
-	if (!cs->class)
+	if (!cs->tty_dev)
 		return;
 
 	gig_dbg(DEBUG_INIT, "setting up sysfs");
-	if (class_device_create_file(cs->class, &class_device_attr_cidmode))
+	if (device_create_file(cs->tty_dev, &dev_attr_cidmode))
 		dev_err(cs->dev, "could not create sysfs attribute\n");
 }

drivers/mmc/mmc_queue.c

@@ -130,8 +130,8 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock
 	u64 limit = BLK_BOUNCE_HIGH;
 	int ret;
 
-	if (host->dev->dma_mask && *host->dev->dma_mask)
-		limit = *host->dev->dma_mask;
+	if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask)
+		limit = *mmc_dev(host)->dma_mask;
 
 	mq->card = card;
 	mq->queue = blk_init_queue(mmc_request, lock);

drivers/mmc/mmc_sysfs.c

@@ -199,7 +199,7 @@ void mmc_init_card(struct mmc_card *card, struct mmc_host *host)
 	memset(card, 0, sizeof(struct mmc_card));
 	card->host = host;
 	device_initialize(&card->dev);
-	card->dev.parent = card->host->dev;
+	card->dev.parent = mmc_dev(host);
 	card->dev.bus = &mmc_bus_type;
 	card->dev.release = mmc_release_card;
 }
@@ -242,7 +242,7 @@ void mmc_remove_card(struct mmc_card *card)
 }
 
 
-static void mmc_host_classdev_release(struct class_device *dev)
+static void mmc_host_classdev_release(struct device *dev)
 {
 	struct mmc_host *host = cls_dev_to_mmc_host(dev);
 	kfree(host);
@@ -250,7 +250,7 @@ static void mmc_host_classdev_release(struct class_device *dev)
 
 static struct class mmc_host_class = {
 	.name		= "mmc_host",
-	.release	= mmc_host_classdev_release,
+	.dev_release	= mmc_host_classdev_release,
 };
 
 static DEFINE_IDR(mmc_host_idr);
@@ -267,10 +267,10 @@ struct mmc_host *mmc_alloc_host_sysfs(int extra, struct device *dev)
 	if (host) {
 		memset(host, 0, sizeof(struct mmc_host) + extra);
 
-		host->dev = dev;
-		host->class_dev.dev = host->dev;
+		host->parent = dev;
+		host->class_dev.parent = dev;
 		host->class_dev.class = &mmc_host_class;
-		class_device_initialize(&host->class_dev);
+		device_initialize(&host->class_dev);
 	}
 
 	return host;
@@ -292,10 +292,10 @@ int mmc_add_host_sysfs(struct mmc_host *host)
 	if (err)
 		return err;
 
-	snprintf(host->class_dev.class_id, BUS_ID_SIZE,
+	snprintf(host->class_dev.bus_id, BUS_ID_SIZE,
 		 "mmc%d", host->index);
 
-	return class_device_add(&host->class_dev);
+	return device_add(&host->class_dev);
 }
 
 /*
@@ -303,7 +303,7 @@ int mmc_add_host_sysfs(struct mmc_host *host)
  */
 void mmc_remove_host_sysfs(struct mmc_host *host)
 {
-	class_device_del(&host->class_dev);
+	device_del(&host->class_dev);
 
 	spin_lock(&mmc_host_lock);
 	idr_remove(&mmc_host_idr, host->index);
@@ -315,7 +315,7 @@ void mmc_remove_host_sysfs(struct mmc_host *host)
  */
 void mmc_free_host_sysfs(struct mmc_host *host)
 {
-	class_device_put(&host->class_dev);
+	put_device(&host->class_dev);
 }
 
 static struct workqueue_struct *workqueue;

drivers/mmc/wbsd.c

@@ -1488,7 +1488,7 @@ static void __devinit wbsd_request_dma(struct wbsd_host *host, int dma)
 	/*
 	 * Translate the address to a physical address.
 	 */
-	host->dma_addr = dma_map_single(host->mmc->dev, host->dma_buffer,
+	host->dma_addr = dma_map_single(mmc_dev(host->mmc), host->dma_buffer,
 		WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
 
 	/*
@@ -1512,7 +1512,7 @@ static void __devinit wbsd_request_dma(struct wbsd_host *host, int dma)
 	 */
 	BUG_ON(1);
 
-	dma_unmap_single(host->mmc->dev, host->dma_addr,
+	dma_unmap_single(mmc_dev(host->mmc), host->dma_addr,
 		WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
 	host->dma_addr = (dma_addr_t)NULL;
 
@@ -1530,7 +1530,7 @@ static void __devinit wbsd_request_dma(struct wbsd_host *host, int dma)
 static void __devexit wbsd_release_dma(struct wbsd_host *host)
 {
 	if (host->dma_addr) {
-		dma_unmap_single(host->mmc->dev, host->dma_addr,
+		dma_unmap_single(mmc_dev(host->mmc), host->dma_addr,
 			WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
 	}
 	kfree(host->dma_buffer);

drivers/net/ppp_generic.c

@@ -860,7 +860,7 @@ static int __init ppp_init(void)
 			err = PTR_ERR(ppp_class);
 			goto out_chrdev;
 		}
-		class_device_create(ppp_class, NULL, MKDEV(PPP_MAJOR, 0), NULL, "ppp");
+		device_create(ppp_class, NULL, MKDEV(PPP_MAJOR, 0), "ppp");
 	}
 
 out:
@@ -2675,7 +2675,7 @@ static void __exit ppp_cleanup(void)
 	cardmap_destroy(&all_ppp_units);
 	if (unregister_chrdev(PPP_MAJOR, "ppp") != 0)
 		printk(KERN_ERR "PPP: failed to unregister PPP device\n");
-	class_device_destroy(ppp_class, MKDEV(PPP_MAJOR, 0));
+	device_destroy(ppp_class, MKDEV(PPP_MAJOR, 0));
 	class_destroy(ppp_class);
 }
 

drivers/video/fbmem.c

@@ -1296,14 +1296,14 @@ register_framebuffer(struct fb_info *fb_info)
 			break;
 	fb_info->node = i;
 
-	fb_info->class_device = class_device_create(fb_class, NULL, MKDEV(FB_MAJOR, i),
-				    fb_info->device, "fb%d", i);
-	if (IS_ERR(fb_info->class_device)) {
+	fb_info->dev = device_create(fb_class, fb_info->device,
+				     MKDEV(FB_MAJOR, i), "fb%d", i);
+	if (IS_ERR(fb_info->dev)) {
 		/* Not fatal */
-		printk(KERN_WARNING "Unable to create class_device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->class_device));
-		fb_info->class_device = NULL;
+		printk(KERN_WARNING "Unable to create device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->dev));
+		fb_info->dev = NULL;
 	} else
-		fb_init_class_device(fb_info);
+		fb_init_device(fb_info);
 
 	if (fb_info->pixmap.addr == NULL) {
 		fb_info->pixmap.addr = kmalloc(FBPIXMAPSIZE, GFP_KERNEL);
@@ -1356,8 +1356,8 @@ unregister_framebuffer(struct fb_info *fb_info)
 	fb_destroy_modelist(&fb_info->modelist);
 	registered_fb[i]=NULL;
 	num_registered_fb--;
-	fb_cleanup_class_device(fb_info);
-	class_device_destroy(fb_class, MKDEV(FB_MAJOR, i));
+	fb_cleanup_device(fb_info);
+	device_destroy(fb_class, MKDEV(FB_MAJOR, i));
 	event.info = fb_info;
 	fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event);
 	return 0;

fs/sysfs/dir.c

@@ -372,6 +372,51 @@ int sysfs_rename_dir(struct kobject * kobj, const char *new_name)
 	return error;
 }
 
+int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent)
+{
+	struct dentry *old_parent_dentry, *new_parent_dentry, *new_dentry;
+	struct sysfs_dirent *new_parent_sd, *sd;
+	int error;
+
+	if (!new_parent)
+		return -EINVAL;
+
+	old_parent_dentry = kobj->parent ?
+		kobj->parent->dentry : sysfs_mount->mnt_sb->s_root;
+	new_parent_dentry = new_parent->dentry;
+
+again:
+	mutex_lock(&old_parent_dentry->d_inode->i_mutex);
+	if (!mutex_trylock(&new_parent_dentry->d_inode->i_mutex)) {
+		mutex_unlock(&old_parent_dentry->d_inode->i_mutex);
+		goto again;
+	}
+
+	new_parent_sd = new_parent_dentry->d_fsdata;
+	sd = kobj->dentry->d_fsdata;
+
+	new_dentry = lookup_one_len(kobj->name, new_parent_dentry,
+				    strlen(kobj->name));
+	if (IS_ERR(new_dentry)) {
+		error = PTR_ERR(new_dentry);
+		goto out;
+	} else
+		error = 0;
+	d_add(new_dentry, NULL);
+	d_move(kobj->dentry, new_dentry);
+	dput(new_dentry);
+
+	/* Remove from old parent's list and insert into new parent's list. */
+	list_del_init(&sd->s_sibling);
+	list_add(&sd->s_sibling, &new_parent_sd->s_children);
+
+out:
+	mutex_unlock(&new_parent_dentry->d_inode->i_mutex);
+	mutex_unlock(&old_parent_dentry->d_inode->i_mutex);
+
+	return error;
+}
+
 static int sysfs_dir_open(struct inode *inode, struct file *file)
 {
 	struct dentry * dentry = file->f_dentry;

fs/sysfs/file.c

@@ -190,6 +190,9 @@ fill_write_buffer(struct sysfs_buffer * buffer, const char __user * buf, size_t
 		count = PAGE_SIZE - 1;
 	error = copy_from_user(buffer->page,buf,count);
 	buffer->needs_read_fill = 1;
+	/* if buf is assumed to contain a string, terminate it by \0,
+	   so e.g. sscanf() can scan the string easily */
+	buffer->page[count] = 0;
 	return error ? -EFAULT : count;
 }
 

include/acpi/acpi_bus.h

@@ -357,7 +357,7 @@ struct device *acpi_get_physical_device(acpi_handle);
 /* helper */
 acpi_handle acpi_get_child(acpi_handle, acpi_integer);
 acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
-#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->firmware_data))
+#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
 
 #endif /* CONFIG_ACPI */
 

include/asm-alpha/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-arm/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-arm26/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-avr32/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-cris/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-frv/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-generic/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#ifndef _ASM_GENERIC_DEVICE_H
+#define _ASM_GENERIC_DEVICE_H
+
+struct dev_archdata {
+};
+
+#endif /* _ASM_GENERIC_DEVICE_H */

include/asm-h8300/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-i386/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#ifndef _ASM_I386_DEVICE_H
+#define _ASM_I386_DEVICE_H
+
+struct dev_archdata {
+#ifdef CONFIG_ACPI
+	void	*acpi_handle;
+#endif
+};
+
+#endif /* _ASM_I386_DEVICE_H */

include/asm-ia64/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#ifndef _ASM_IA64_DEVICE_H
+#define _ASM_IA64_DEVICE_H
+
+struct dev_archdata {
+#ifdef CONFIG_ACPI
+	void	*acpi_handle;
+#endif
+};
+
+#endif /* _ASM_IA64_DEVICE_H */

include/asm-m32r/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-m68k/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-m68knommu/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-mips/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-parisc/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-powerpc/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-ppc/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-s390/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-sh/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-sh64/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-sparc/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-sparc64/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-um/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-v850/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/asm-x86_64/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#ifndef _ASM_X86_64_DEVICE_H
+#define _ASM_X86_64_DEVICE_H
+
+struct dev_archdata {
+#ifdef CONFIG_ACPI
+	void	*acpi_handle;
+#endif
+};
+
+#endif /* _ASM_X86_64_DEVICE_H */

include/asm-xtensa/device.h

+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+

include/linux/device.h

@@ -21,6 +21,7 @@
 #include <linux/pm.h>
 #include <asm/semaphore.h>
 #include <asm/atomic.h>
+#include <asm/device.h>
 
 #define DEVICE_NAME_SIZE	50
 #define DEVICE_NAME_HALF	__stringify(20)	/* Less than half to accommodate slop */
@@ -42,6 +43,8 @@ struct bus_type {
 	struct klist		klist_devices;
 	struct klist		klist_drivers;
 
+	struct blocking_notifier_head bus_notifier;
+
 	struct bus_attribute	* bus_attrs;
 	struct device_attribute	* dev_attrs;
 	struct driver_attribute	* drv_attrs;
@@ -75,6 +78,29 @@ int __must_check bus_for_each_drv(struct bus_type *bus,
 		struct device_driver *start, void *data,
 		int (*fn)(struct device_driver *, void *));
 
+/*
+ * Bus notifiers: Get notified of addition/removal of devices
+ * and binding/unbinding of drivers to devices.
+ * In the long run, it should be a replacement for the platform
+ * notify hooks.
+ */
+struct notifier_block;
+
+extern int bus_register_notifier(struct bus_type *bus,
+				 struct notifier_block *nb);
+extern int bus_unregister_notifier(struct bus_type *bus,
+				   struct notifier_block *nb);
+
+/* All 4 notifers below get called with the target struct device *
+ * as an argument. Note that those functions are likely to be called
+ * with the device semaphore held in the core, so be careful.
+ */
+#define BUS_NOTIFY_ADD_DEVICE		0x00000001 /* device added */
+#define BUS_NOTIFY_DEL_DEVICE		0x00000002 /* device removed */
+#define BUS_NOTIFY_BOUND_DRIVER		0x00000003 /* driver bound to device */
+#define BUS_NOTIFY_UNBIND_DRIVER	0x00000004 /* driver about to be
+						      unbound */
+
 /* driverfs interface for exporting bus attributes */
 
 struct bus_attribute {
@@ -343,8 +369,6 @@ struct device {
 	void		*driver_data;	/* data private to the driver */
 	void		*platform_data;	/* Platform specific data, device
 					   core doesn't touch it */
-	void		*firmware_data; /* Firmware specific data (e.g. ACPI,
-					   BIOS data),reserved for device core*/
 	struct dev_pm_info	power;
 
 	u64		*dma_mask;	/* dma mask (if dma'able device) */
@@ -358,6 +382,8 @@ struct device {
 
 	struct dma_coherent_mem	*dma_mem; /* internal for coherent mem
 					     override */
+	/* arch specific additions */
+	struct dev_archdata	archdata;
 
 	/* class_device migration path */
 	struct list_head	node;
@@ -395,7 +421,10 @@ extern int __must_check device_add(struct device * dev);
 extern void device_del(struct device * dev);
 extern int device_for_each_child(struct device *, void *,
 		     int (*fn)(struct device *, void *));
+extern struct device *device_find_child(struct device *, void *data,
+					int (*match)(struct device *, void *));
 extern int device_rename(struct device *dev, char *new_name);
+extern int device_move(struct device *dev, struct device *new_parent);
 
 /*
  * Manual binding of a device to driver. See drivers/base/bus.c
@@ -415,8 +444,6 @@ extern struct device *device_create(struct class *cls, struct device *parent,
 				    __attribute__((format(printf,4,5)));
 extern void device_destroy(struct class *cls, dev_t devt);
 
-extern int virtual_device_parent(struct device *dev);
-
 /*
  * Platform "fixup" functions - allow the platform to have their say
  * about devices and actions that the general device layer doesn't

include/linux/fb.h

@@ -774,8 +774,8 @@ struct fb_info {
 #endif
 
 	struct fb_ops *fbops;
-	struct device *device;
-	struct class_device *class_device; /* sysfs per device attrs */
+	struct device *device;		/* This is the parent */
+	struct device *dev;		/* This is this fb device */
 	int class_flag;                    /* private sysfs flags */
 #ifdef CONFIG_FB_TILEBLITTING
 	struct fb_tile_ops *tileops;    /* Tile Blitting */
@@ -910,8 +910,8 @@ static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
 /* drivers/video/fbsysfs.c */
 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
 extern void framebuffer_release(struct fb_info *info);
-extern int fb_init_class_device(struct fb_info *fb_info);
-extern void fb_cleanup_class_device(struct fb_info *head);
+extern int fb_init_device(struct fb_info *fb_info);
+extern void fb_cleanup_device(struct fb_info *head);
 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
 
 /* drivers/video/fbmon.c */

include/linux/kobject.h

@@ -47,6 +47,7 @@ enum kobject_action {
 	KOBJ_UMOUNT	= (__force kobject_action_t) 0x05,	/* umount event for block devices (broken) */
 	KOBJ_OFFLINE	= (__force kobject_action_t) 0x06,	/* device offline */
 	KOBJ_ONLINE	= (__force kobject_action_t) 0x07,	/* device online */
+	KOBJ_MOVE	= (__force kobject_action_t) 0x08,	/* device move */
 };
 
 struct kobject {
@@ -76,6 +77,7 @@ extern int __must_check kobject_add(struct kobject *);
 extern void kobject_del(struct kobject *);
 
 extern int __must_check kobject_rename(struct kobject *, const char *new_name);
+extern int __must_check kobject_move(struct kobject *, struct kobject *);
 
 extern int __must_check kobject_register(struct kobject *);
 extern void kobject_unregister(struct kobject *);
@@ -264,6 +266,8 @@ extern int __must_check subsys_create_file(struct subsystem * ,
 
 #if defined(CONFIG_HOTPLUG)
 void kobject_uevent(struct kobject *kobj, enum kobject_action action);
+void kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
+			char *envp[]);
 
 int add_uevent_var(char **envp, int num_envp, int *cur_index,
 			char *buffer, int buffer_size, int *cur_len,
@@ -271,6 +275,10 @@ int add_uevent_var(char **envp, int num_envp, int *cur_index,
 	__attribute__((format (printf, 7, 8)));
 #else
 static inline void kobject_uevent(struct kobject *kobj, enum kobject_action action) { }
+static inline void kobject_uevent_env(struct kobject *kobj,
+				      enum kobject_action action,
+				      char *envp[])
+{ }
 
 static inline int add_uevent_var(char **envp, int num_envp, int *cur_index,
 				      char *buffer, int buffer_size, int *cur_len, 

include/linux/miscdevice.h

@@ -31,15 +31,14 @@
 #define	HPET_MINOR	     228
 
 struct device;
-struct class_device;
 
 struct miscdevice  {
 	int minor;
 	const char *name;
 	const struct file_operations *fops;
 	struct list_head list;
-	struct device *dev;
-	struct class_device *class;
+	struct device *parent;
+	struct device *this_device;
 };
 
 extern int misc_register(struct miscdevice * misc);

include/linux/mmc/host.h

@@ -74,8 +74,8 @@ struct mmc_card;
 struct device;
 
 struct mmc_host {
-	struct device		*dev;
-	struct class_device	class_dev;
+	struct device		*parent;
+	struct device		class_dev;
 	int			index;
 	const struct mmc_host_ops *ops;
 	unsigned int		f_min;
@@ -125,8 +125,8 @@ static inline void *mmc_priv(struct mmc_host *host)
 	return (void *)host->private;
 }
 
-#define mmc_dev(x)	((x)->dev)
-#define mmc_hostname(x)	((x)->class_dev.class_id)
+#define mmc_dev(x)	((x)->parent)
+#define mmc_hostname(x)	((x)->class_dev.bus_id)
 
 extern int mmc_suspend_host(struct mmc_host *, pm_message_t);
 extern int mmc_resume_host(struct mmc_host *);

include/linux/module.h

@@ -264,6 +264,7 @@ struct module
 	struct module_attribute *modinfo_attrs;
 	const char *version;
 	const char *srcversion;
+	struct kobject *drivers_dir;
 
 	/* Exported symbols */
 	const struct kernel_symbol *syms;

include/linux/platform_device.h

@@ -58,6 +58,12 @@ struct platform_driver {
 extern int platform_driver_register(struct platform_driver *);
 extern void platform_driver_unregister(struct platform_driver *);
 
+/* non-hotpluggable platform devices may use this so that probe() and
+ * its support may live in __init sections, conserving runtime memory.
+ */
+extern int platform_driver_probe(struct platform_driver *driver,
+		int (*probe)(struct platform_device *));
+
 #define platform_get_drvdata(_dev)	dev_get_drvdata(&(_dev)->dev)
 #define platform_set_drvdata(_dev,data)	dev_set_drvdata(&(_dev)->dev, (data))
 

include/linux/sysfs.h

@@ -96,6 +96,9 @@ sysfs_remove_dir(struct kobject *);
 extern int __must_check
 sysfs_rename_dir(struct kobject *, const char *new_name);
 
+extern int __must_check
+sysfs_move_dir(struct kobject *, struct kobject *);
+
 extern int __must_check
 sysfs_create_file(struct kobject *, const struct attribute *);
 
@@ -142,6 +145,11 @@ static inline int sysfs_rename_dir(struct kobject * k, const char *new_name)
 	return 0;
 }
 
+static inline int sysfs_move_dir(struct kobject * k, struct kobject * new_parent)
+{
+	return 0;
+}
+
 static inline int sysfs_create_file(struct kobject * k, const struct attribute * a)
 {
 	return 0;

include/linux/tty.h

@@ -276,9 +276,8 @@ extern int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc);
 extern int tty_unregister_ldisc(int disc);
 extern int tty_register_driver(struct tty_driver *driver);
 extern int tty_unregister_driver(struct tty_driver *driver);
-extern struct class_device *tty_register_device(struct tty_driver *driver,
-						unsigned index,
-						struct device *dev);
+extern struct device *tty_register_device(struct tty_driver *driver,
+					  unsigned index, struct device *dev);
 extern void tty_unregister_device(struct tty_driver *driver, unsigned index);
 extern int tty_read_raw_data(struct tty_struct *tty, unsigned char *bufp,
 			     int buflen);

include/sound/core.h

@@ -132,6 +132,7 @@ struct snd_card {
 	int shutdown;			/* this card is going down */
 	int free_on_last_close;		/* free in context of file_release */
 	wait_queue_head_t shutdown_sleep;
+	struct device *parent;
 	struct device *dev;
 
 #ifdef CONFIG_PM
@@ -187,13 +188,14 @@ struct snd_minor {
 	int device;			/* device number */
 	const struct file_operations *f_ops;	/* file operations */
 	void *private_data;		/* private data for f_ops->open */
-	struct class_device *class_dev;	/* class device for sysfs */
+	struct device *dev;		/* device for sysfs */
 };
 
 /* sound.c */
 
 extern int snd_major;
 extern int snd_ecards_limit;
+extern struct class *sound_class;
 
 void snd_request_card(int card);
 
@@ -203,7 +205,7 @@ int snd_register_device(int type, struct snd_card *card, int dev,
 int snd_unregister_device(int type, struct snd_card *card, int dev);
 void *snd_lookup_minor_data(unsigned int minor, int type);
 int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev,
-			      const struct class_device_attribute *attr);
+			      struct device_attribute *attr);
 
 #ifdef CONFIG_SND_OSSEMUL
 int snd_register_oss_device(int type, struct snd_card *card, int dev,
@@ -255,7 +257,7 @@ int snd_card_file_add(struct snd_card *card, struct file *file);
 int snd_card_file_remove(struct snd_card *card, struct file *file);
 
 #ifndef snd_card_set_dev
-#define snd_card_set_dev(card,devptr) ((card)->dev = (devptr))
+#define snd_card_set_dev(card,devptr) ((card)->parent = (devptr))
 #endif
 
 /* device.c */

init/Kconfig

@@ -249,6 +249,26 @@ config CPUSETS
 
 	  Say N if unsure.
 
+config SYSFS_DEPRECATED
+	bool "Create deprecated sysfs files"
+	default y
+	help
+	  This option creates deprecated symlinks such as the
+	  "device"-link, the <subsystem>:<name>-link, and the
+	  "bus"-link. It may also add deprecated key in the
+	  uevent environment.
+	  None of these features or values should be used today, as
+	  they export driver core implementation details to userspace
+	  or export properties which can't be kept stable across kernel
+	  releases.
+
+	  If enabled, this option will also move any device structures
+	  that belong to a class, back into the /sys/class heirachy, in
+	  order to support older versions of udev.
+
+	  If you are using a distro that was released in 2006 or later,
+	  it should be safe to say N here.
+
 config RELAY
 	bool "Kernel->user space relay support (formerly relayfs)"
 	help

kernel/module.c

@@ -1086,22 +1086,35 @@ static int mod_sysfs_setup(struct module *mod,
 		goto out;
 	kobj_set_kset_s(&mod->mkobj, module_subsys);
 	mod->mkobj.mod = mod;
-	err = kobject_register(&mod->mkobj.kobj);
+
+	/* delay uevent until full sysfs population */
+	kobject_init(&mod->mkobj.kobj);
+	err = kobject_add(&mod->mkobj.kobj);
 	if (err)
 		goto out;
 
+	mod->drivers_dir = kobject_add_dir(&mod->mkobj.kobj, "drivers");
+	if (!mod->drivers_dir)
+		goto out_unreg;
+
 	err = module_param_sysfs_setup(mod, kparam, num_params);
 	if (err)
-		goto out_unreg;
+		goto out_unreg_drivers;
 
 	err = module_add_modinfo_attrs(mod);
 	if (err)
-		goto out_unreg;
+		goto out_unreg_param;
 
+	kobject_uevent(&mod->mkobj.kobj, KOBJ_ADD);
 	return 0;
 
+out_unreg_drivers:
+	kobject_unregister(mod->drivers_dir);
+out_unreg_param:
+	module_param_sysfs_remove(mod);
 out_unreg:
-	kobject_unregister(&mod->mkobj.kobj);
+	kobject_del(&mod->mkobj.kobj);
+	kobject_put(&mod->mkobj.kobj);
 out:
 	return err;
 }
@@ -1110,6 +1123,7 @@ static void mod_kobject_remove(struct module *mod)
 {
 	module_remove_modinfo_attrs(mod);
 	module_param_sysfs_remove(mod);
+	kobject_unregister(mod->drivers_dir);
 
 	kobject_unregister(&mod->mkobj.kobj);
 }
@@ -2275,11 +2289,14 @@ void print_modules(void)
 
 void module_add_driver(struct module *mod, struct device_driver *drv)
 {
+	int no_warn;
+
 	if (!mod || !drv)
 		return;
 
-	/* Don't check return code; this call is idempotent */
-	sysfs_create_link(&drv->kobj, &mod->mkobj.kobj, "module");
+	/* Don't check return codes; these calls are idempotent */
+	no_warn = sysfs_create_link(&drv->kobj, &mod->mkobj.kobj, "module");
+	no_warn = sysfs_create_link(mod->drivers_dir, &drv->kobj, drv->name);
 }
 EXPORT_SYMBOL(module_add_driver);
 
@@ -2288,6 +2305,8 @@ void module_remove_driver(struct device_driver *drv)
 	if (!drv)
 		return;
 	sysfs_remove_link(&drv->kobj, "module");
+	if (drv->owner && drv->owner->drivers_dir)
+		sysfs_remove_link(drv->owner->drivers_dir, drv->name);
 }
 EXPORT_SYMBOL(module_remove_driver);
 

lib/kobject.c

@@ -310,6 +310,56 @@ int kobject_rename(struct kobject * kobj, const char *new_name)
 	return error;
 }
 
+/**
+ *	kobject_move - move object to another parent
+ *	@kobj:	object in question.
+ *	@new_parent: object's new parent
+ */
+
+int kobject_move(struct kobject *kobj, struct kobject *new_parent)
+{
+	int error;
+	struct kobject *old_parent;
+	const char *devpath = NULL;
+	char *devpath_string = NULL;
+	char *envp[2];
+
+	kobj = kobject_get(kobj);
+	if (!kobj)
+		return -EINVAL;
+	new_parent = kobject_get(new_parent);
+	if (!new_parent) {
+		error = -EINVAL;
+		goto out;
+	}
+	/* old object path */
+	devpath = kobject_get_path(kobj, GFP_KERNEL);
+	if (!devpath) {
+		error = -ENOMEM;
+		goto out;
+	}
+	devpath_string = kmalloc(strlen(devpath) + 15, GFP_KERNEL);
+	if (!devpath_string) {
+		error = -ENOMEM;
+		goto out;
+	}
+	sprintf(devpath_string, "DEVPATH_OLD=%s", devpath);
+	envp[0] = devpath_string;
+	envp[1] = NULL;
+	error = sysfs_move_dir(kobj, new_parent);
+	if (error)
+		goto out;
+	old_parent = kobj->parent;
+	kobj->parent = new_parent;
+	kobject_put(old_parent);
+	kobject_uevent_env(kobj, KOBJ_MOVE, envp);
+out:
+	kobject_put(kobj);
+	kfree(devpath_string);
+	kfree(devpath);
+	return error;
+}
+
 /**
  *	kobject_del - unlink kobject from hierarchy.
  * 	@kobj:	object.

lib/kobject_uevent.c

@@ -50,18 +50,22 @@ static char *action_to_string(enum kobject_action action)
 		return "offline";
 	case KOBJ_ONLINE:
 		return "online";
+	case KOBJ_MOVE:
+		return "move";
 	default:
 		return NULL;
 	}
 }
 
 /**
- * kobject_uevent - notify userspace by ending an uevent
+ * kobject_uevent_env - send an uevent with environmental data
  *
- * @action: action that is happening (usually KOBJ_ADD and KOBJ_REMOVE)
+ * @action: action that is happening (usually KOBJ_MOVE)
  * @kobj: struct kobject that the action is happening to
+ * @envp_ext: pointer to environmental data
  */
-void kobject_uevent(struct kobject *kobj, enum kobject_action action)
+void kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
+			char *envp_ext[])
 {
 	char **envp;
 	char *buffer;
@@ -76,6 +80,7 @@ void kobject_uevent(struct kobject *kobj, enum kobject_action action)
 	char *seq_buff;
 	int i = 0;
 	int retval;
+	int j;
 
 	pr_debug("%s\n", __FUNCTION__);
 
@@ -134,7 +139,8 @@ void kobject_uevent(struct kobject *kobj, enum kobject_action action)
 	scratch += sprintf (scratch, "DEVPATH=%s", devpath) + 1;
 	envp [i++] = scratch;
 	scratch += sprintf(scratch, "SUBSYSTEM=%s", subsystem) + 1;
-
+	for (j = 0; envp_ext && envp_ext[j]; j++)
+		envp[i++] = envp_ext[j];
 	/* just reserve the space, overwrite it after kset call has returned */
 	envp[i++] = seq_buff = scratch;
 	scratch += strlen("SEQNUM=18446744073709551616") + 1;
@@ -200,6 +206,20 @@ void kobject_uevent(struct kobject *kobj, enum kobject_action action)
 	kfree(envp);
 	return;
 }
+
+EXPORT_SYMBOL_GPL(kobject_uevent_env);
+
+/**
+ * kobject_uevent - notify userspace by ending an uevent
+ *
+ * @action: action that is happening (usually KOBJ_ADD and KOBJ_REMOVE)
+ * @kobj: struct kobject that the action is happening to
+ */
+void kobject_uevent(struct kobject *kobj, enum kobject_action action)
+{
+	kobject_uevent_env(kobj, action, NULL);
+}
+
 EXPORT_SYMBOL_GPL(kobject_uevent);
 
 /**

sound/core/init.c

@@ -361,6 +361,8 @@ static int snd_card_do_free(struct snd_card *card)
 		snd_printk(KERN_WARNING "unable to free card info\n");
 		/* Not fatal error */
 	}
+	if (card->dev)
+		device_unregister(card->dev);
 	kfree(card);
 	return 0;
 }
@@ -495,6 +497,12 @@ int snd_card_register(struct snd_card *card)
 	int err;
 
 	snd_assert(card != NULL, return -EINVAL);
+	if (!card->dev) {
+		card->dev = device_create(sound_class, card->parent, 0,
+					  "card%i", card->number);
+		if (IS_ERR(card->dev))
+			card->dev = NULL;
+	}
 	if ((err = snd_device_register_all(card)) < 0)
 		return err;
 	mutex_lock(&snd_card_mutex);

sound/core/pcm.c

@@ -910,7 +910,8 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
 	substream->pstr->substream_opened--;
 }
 
-static ssize_t show_pcm_class(struct class_device *class_device, char *buf)
+static ssize_t show_pcm_class(struct device *dev,
+			      struct device_attribute *attr, char *buf)
 {
 	struct snd_pcm *pcm;
 	const char *str;
@@ -921,7 +922,7 @@ static ssize_t show_pcm_class(struct class_device *class_device, char *buf)
 		[SNDRV_PCM_CLASS_DIGITIZER] = "digitizer",
 	};
 
-	if (! (pcm = class_get_devdata(class_device)) ||
+	if (! (pcm = dev_get_drvdata(dev)) ||
 	    pcm->dev_class > SNDRV_PCM_CLASS_LAST)
 		str = "none";
 	else
@@ -929,7 +930,7 @@ static ssize_t show_pcm_class(struct class_device *class_device, char *buf)
         return snprintf(buf, PAGE_SIZE, "%s\n", str);
 }
 
-static struct class_device_attribute pcm_attrs =
+static struct device_attribute pcm_attrs =
 	__ATTR(pcm_class, S_IRUGO, show_pcm_class, NULL);
 
 static int snd_pcm_dev_register(struct snd_device *device)

sound/core/sound.c

@@ -61,9 +61,6 @@ EXPORT_SYMBOL(snd_ecards_limit);
 static struct snd_minor *snd_minors[SNDRV_OS_MINORS];
 static DEFINE_MUTEX(sound_mutex);
 
-extern struct class *sound_class;
-
-
 #ifdef CONFIG_KMOD
 
 /**
@@ -268,11 +265,10 @@ int snd_register_device(int type, struct snd_card *card, int dev,
 	snd_minors[minor] = preg;
 	if (card)
 		device = card->dev;
-	preg->class_dev = class_device_create(sound_class, NULL,
-					      MKDEV(major, minor),
-					      device, "%s", name);
-	if (preg->class_dev)
-		class_set_devdata(preg->class_dev, private_data);
+	preg->dev = device_create(sound_class, device, MKDEV(major, minor),
+				  "%s", name);
+	if (preg->dev)
+		dev_set_drvdata(preg->dev, private_data);
 
 	mutex_unlock(&sound_mutex);
 	return 0;
@@ -320,7 +316,7 @@ int snd_unregister_device(int type, struct snd_card *card, int dev)
 		return -EINVAL;
 	}
 
-	class_device_destroy(sound_class, MKDEV(major, minor));
+	device_destroy(sound_class, MKDEV(major, minor));
 
 	kfree(snd_minors[minor]);
 	snd_minors[minor] = NULL;
@@ -331,15 +327,15 @@ int snd_unregister_device(int type, struct snd_card *card, int dev)
 EXPORT_SYMBOL(snd_unregister_device);
 
 int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev,
-			      const struct class_device_attribute *attr)
+			      struct device_attribute *attr)
 {
 	int minor, ret = -EINVAL;
-	struct class_device *cdev;
+	struct device *d;
 
 	mutex_lock(&sound_mutex);
 	minor = find_snd_minor(type, card, dev);
-	if (minor >= 0 && (cdev = snd_minors[minor]->class_dev) != NULL)
-		ret = class_device_create_file(cdev, attr);
+	if (minor >= 0 && (d = snd_minors[minor]->dev) != NULL)
+		ret = device_create_file(d, attr);
 	mutex_unlock(&sound_mutex);
 	return ret;
 

sound/oss/soundcard.c

@@ -557,17 +557,17 @@ static int __init oss_init(void)
 	sound_dmap_flag = (dmabuf > 0 ? 1 : 0);
 
 	for (i = 0; i < sizeof (dev_list) / sizeof *dev_list; i++) {
-		class_device_create(sound_class, NULL,
-				    MKDEV(SOUND_MAJOR, dev_list[i].minor),
-				    NULL, "%s", dev_list[i].name);
+		device_create(sound_class, NULL,
+			      MKDEV(SOUND_MAJOR, dev_list[i].minor),
+			      "%s", dev_list[i].name);
 
 		if (!dev_list[i].num)
 			continue;
 
 		for (j = 1; j < *dev_list[i].num; j++)
-			class_device_create(sound_class, NULL,
-					    MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)),
-					    NULL, "%s%d", dev_list[i].name, j);
+			device_create(sound_class, NULL,
+				      MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)),
+				      "%s%d", dev_list[i].name, j);
 	}
 
 	if (sound_nblocks >= 1024)
@@ -581,11 +581,11 @@ static void __exit oss_cleanup(void)
 	int i, j;
 
 	for (i = 0; i < sizeof (dev_list) / sizeof *dev_list; i++) {
-		class_device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor));
+		device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor));
 		if (!dev_list[i].num)
 			continue;
 		for (j = 1; j < *dev_list[i].num; j++)
-			class_device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)));
+			device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)));
 	}
 	
 	unregister_sound_special(1);

sound/sound_core.c

@@ -170,8 +170,8 @@ static int sound_insert_unit(struct sound_unit **list, const struct file_operati
 	else
 		sprintf(s->name, "sound/%s%d", name, r / SOUND_STEP);
 
-	class_device_create(sound_class, NULL, MKDEV(SOUND_MAJOR, s->unit_minor),
-			    dev, s->name+6);
+	device_create(sound_class, dev, MKDEV(SOUND_MAJOR, s->unit_minor),
+		      s->name+6);
 	return r;
 
  fail:
@@ -193,7 +193,7 @@ static void sound_remove_unit(struct sound_unit **list, int unit)
 	p = __sound_remove_unit(list, unit);
 	spin_unlock(&sound_loader_lock);
 	if (p) {
-		class_device_destroy(sound_class, MKDEV(SOUND_MAJOR, p->unit_minor));
+		device_destroy(sound_class, MKDEV(SOUND_MAJOR, p->unit_minor));
 		kfree(p);
 	}
 }