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

Trivial manual merge fixup for usb_find_interface clashes.

Documentation/powerpc/eeh-pci-error-recovery.txt

···
 At this time, a generic EEH recovery mechanism has been implemented,
 so that individual device drivers do not need to be modified to support
 EEH recovery.  This generic mechanism piggy-backs on the PCI hotplug
-infrastructure,  and percolates events up through the hotplug/udev
+infrastructure,  and percolates events up through the userspace/udev
 infrastructure.  Followiing is a detailed description of how this is
 accomplished.
 
···
 drivers/pci/hotplug/pSeries_pci.c, called handle_eeh_events().
 It saves the device BAR's and then calls rpaphp_unconfig_pci_adapter().
 This last call causes the device driver for the card to be stopped,
-which causes hotplug events to go out to user space. This triggers
+which causes uevents to go out to user space. This triggers
 user-space scripts that might issue commands such as "ifdown eth0"
 for ethernet cards, and so on.  This handler then sleeps for 5 seconds,
 hoping to give the user-space scripts enough time to complete.
···
     calls
     pci_destroy_dev (struct pci_dev *) {
       calls
-      device_unregister (&dev->dev) {      // in /drivers/base/core.c
+      device_unregister (&dev->dev) {        // in /drivers/base/core.c
         calls
-        device_del(struct device * dev) {  // in /drivers/base/core.c
+        device_del(struct device * dev) {    // in /drivers/base/core.c
           calls
-          kobject_del() {                  //in /libs/kobject.c
+          kobject_del() {                    //in /libs/kobject.c
             calls
-            kobject_hotplug() {            // in /libs/kobject.c
+            kobject_uevent() {               // in /libs/kobject.c
               calls
-              kset_hotplug() {             // in /lib/kobject.c
+              kset_uevent() {                // in /lib/kobject.c
                 calls
-                kset->hotplug_ops->hotplug() which is really just
+                kset->uevent_ops->uevent()   // which is really just
                 a call to
-                dev_hotplug() {           // in /drivers/base/core.c
+                dev_uevent() {               // in /drivers/base/core.c
                   calls
-                  dev->bus->hotplug() which is really just a call to
-                  pci_hotplug () {      // in drivers/pci/hotplug.c
+                  dev->bus->uevent() which is really just a call to
+                  pci_uevent () {            // in drivers/pci/hotplug.c
                     which prints device name, etc....
                  }
                }
-               then kset_hotplug() calls
-                call_usermodehelper () with
-                   argv[0]=hotplug_path[] which is "/sbin/hotplug"
-             --> event to userspace,
+               then kobject_uevent() sends a netlink uevent to userspace
+               --> userspace uevent
+               (during early boot, nobody listens to netlink events and
+               kobject_uevent() executes uevent_helper[], which runs the
+               event process /sbin/hotplug)
            }
          }
          kobject_del() then calls sysfs_remove_dir(), which would

MAINTAINERS

···
 W:	http://www.cse.unsw.edu.au/~neilb/patches/linux-devel/
 S:	Maintained
 
-KERNEL EVENT LAYER (KOBJECT_UEVENT)
-P:	Robert Love
-M:	[e-mail]
-L:	[e-mail]
-S:	Maintained
-
 KEXEC
 P:	Eric Biederman
 P:	Randy Dunlap

arch/arm/common/amba.c

···
 }
 
 #ifdef CONFIG_HOTPLUG
-static int amba_hotplug(struct device *dev, char **envp, int nr_env, char *buf, int bufsz)
+static int amba_uevent(struct device *dev, char **envp, int nr_env, char *buf, int bufsz)
 {
 	struct amba_device *pcdev = to_amba_device(dev);
 
···
 	return 0;
 }
 #else
-#define amba_hotplug NULL
+#define amba_uevent NULL
 #endif
 
 static int amba_suspend(struct device *dev, pm_message_t state)
···
 static struct bus_type amba_bustype = {
 	.name		= "amba",
 	.match		= amba_match,
-	.hotplug	= amba_hotplug,
+	.uevent		= amba_uevent,
 	.suspend	= amba_suspend,
 	.resume		= amba_resume,
 };

arch/ia64/sn/kernel/tiocx.c

···
 
 }
 
-static int tiocx_hotplug(struct device *dev, char **envp, int num_envp,
+static int tiocx_uevent(struct device *dev, char **envp, int num_envp,
 			 char *buffer, int buffer_size)
 {
 	return -ENODEV;
···
 struct bus_type tiocx_bus_type = {
 	.name = "tiocx",
 	.match = tiocx_match,
-	.hotplug = tiocx_hotplug,
+	.uevent = tiocx_uevent,
 };
 
 /**

arch/powerpc/kernel/vio.c

···
 
 struct bus_type vio_bus_type = {
 	.name = "vio",
-	.hotplug = vio_hotplug,
+	.uevent = vio_hotplug,
 	.match = vio_bus_match,
 };

block/genhd.c

···
 static ssize_t disk_uevent_store(struct gendisk * disk,
 				 const char *buf, size_t count)
 {
-	kobject_hotplug(&disk->kobj, KOBJ_ADD);
+	kobject_uevent(&disk->kobj, KOBJ_ADD);
 	return count;
 }
 static ssize_t disk_dev_read(struct gendisk * disk, char *page)
···
 
 extern struct kobj_type ktype_part;
 
-static int block_hotplug_filter(struct kset *kset, struct kobject *kobj)
+static int block_uevent_filter(struct kset *kset, struct kobject *kobj)
 {
 	struct kobj_type *ktype = get_ktype(kobj);
 
 	return ((ktype == &ktype_block) || (ktype == &ktype_part));
 }
 
-static int block_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
+static int block_uevent(struct kset *kset, struct kobject *kobj, char **envp,
 			 int num_envp, char *buffer, int buffer_size)
 {
 	struct kobj_type *ktype = get_ktype(kobj);
···
 
 	if (ktype == &ktype_block) {
 		disk = container_of(kobj, struct gendisk, kobj);
-		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
-				    &length, "MINOR=%u", disk->first_minor);
+		add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
+			       &length, "MINOR=%u", disk->first_minor);
 	} else if (ktype == &ktype_part) {
 		disk = container_of(kobj->parent, struct gendisk, kobj);
 		part = container_of(kobj, struct hd_struct, kobj);
-		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
-				    &length, "MINOR=%u",
-				    disk->first_minor + part->partno);
+		add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
+			       &length, "MINOR=%u",
+			       disk->first_minor + part->partno);
 	} else
 		return 0;
 
-	add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size, &length,
-			    "MAJOR=%u", disk->major);
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "MAJOR=%u", disk->major);
 
 	/* add physical device, backing this device  */
 	physdev = disk->driverfs_dev;
 	if (physdev) {
 		char *path = kobject_get_path(&physdev->kobj, GFP_KERNEL);
 
-		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
-				    &length, "PHYSDEVPATH=%s", path);
+		add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
+			       &length, "PHYSDEVPATH=%s", path);
 		kfree(path);
 
 		if (physdev->bus)
-			add_hotplug_env_var(envp, num_envp, &i,
-					    buffer, buffer_size, &length,
-					    "PHYSDEVBUS=%s",
-					    physdev->bus->name);
+			add_uevent_var(envp, num_envp, &i,
+				       buffer, buffer_size, &length,
+				       "PHYSDEVBUS=%s",
+				       physdev->bus->name);
 
 		if (physdev->driver)
-			add_hotplug_env_var(envp, num_envp, &i,
-					    buffer, buffer_size, &length,
-					    "PHYSDEVDRIVER=%s",
-					    physdev->driver->name);
+			add_uevent_var(envp, num_envp, &i,
+				       buffer, buffer_size, &length,
+				       "PHYSDEVDRIVER=%s",
+				       physdev->driver->name);
 	}
 
 	/* terminate, set to next free slot, shrink available space */
···
 	return 0;
 }
 
-static struct kset_hotplug_ops block_hotplug_ops = {
-	.filter		= block_hotplug_filter,
-	.hotplug	= block_hotplug,
+static struct kset_uevent_ops block_uevent_ops = {
+	.filter		= block_uevent_filter,
+	.uevent		= block_uevent,
 };
 
 /* declare block_subsys. */
-static decl_subsys(block, &ktype_block, &block_hotplug_ops);
+static decl_subsys(block, &ktype_block, &block_uevent_ops);
 
 
 /*

drivers/acpi/container.c

···
 			if (ACPI_FAILURE(status) || !device) {
 				result = container_device_add(&device, handle);
 				if (!result)
-					kobject_hotplug(&device->kobj,
-							KOBJ_ONLINE);
+					kobject_uevent(&device->kobj,
+						       KOBJ_ONLINE);
 				else
 					printk("Failed to add container\n");
 			}
 		} else {
 			if (ACPI_SUCCESS(status)) {
 				/* device exist and this is a remove request */
-				kobject_hotplug(&device->kobj, KOBJ_OFFLINE);
+				kobject_uevent(&device->kobj, KOBJ_OFFLINE);
 			}
 		}
 		break;
 	case ACPI_NOTIFY_EJECT_REQUEST:
 		if (!acpi_bus_get_device(handle, &device) && device) {
-			kobject_hotplug(&device->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&device->kobj, KOBJ_OFFLINE);
 		}
 		break;
 	default:

drivers/acpi/processor_core.c

···
 		return_VALUE(-ENODEV);
 
 	if ((pr->id >= 0) && (pr->id < NR_CPUS)) {
-		kobject_hotplug(&(*device)->kobj, KOBJ_ONLINE);
+		kobject_uevent(&(*device)->kobj, KOBJ_ONLINE);
 	}
 	return_VALUE(0);
 }
···
 		}
 
 		if (pr->id >= 0 && (pr->id < NR_CPUS)) {
-			kobject_hotplug(&device->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&device->kobj, KOBJ_OFFLINE);
 			break;
 		}
 
 		result = acpi_processor_start(device);
 		if ((!result) && ((pr->id >= 0) && (pr->id < NR_CPUS))) {
-			kobject_hotplug(&device->kobj, KOBJ_ONLINE);
+			kobject_uevent(&device->kobj, KOBJ_ONLINE);
 		} else {
 			ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 					  "Device [%s] failed to start\n",
···
 		}
 
 		if ((pr->id < NR_CPUS) && (cpu_present(pr->id)))
-			kobject_hotplug(&device->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&device->kobj, KOBJ_OFFLINE);
 		break;
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,

drivers/acpi/scan.c

···
 	.release = acpi_device_release,
 };
 
-static int namespace_hotplug(struct kset *kset, struct kobject *kobj,
+static int namespace_uevent(struct kset *kset, struct kobject *kobj,
 			     char **envp, int num_envp, char *buffer,
 			     int buffer_size)
 {
···
 	if (!dev->driver)
 		return 0;
 
-	if (add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size, &len,
-				"PHYSDEVDRIVER=%s", dev->driver->name))
+	if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
+			   "PHYSDEVDRIVER=%s", dev->driver->name))
 		return -ENOMEM;
 
 	envp[i] = NULL;
···
 	return 0;
 }
 
-static struct kset_hotplug_ops namespace_hotplug_ops = {
-	.hotplug = &namespace_hotplug,
+static struct kset_uevent_ops namespace_uevent_ops = {
+	.uevent = &namespace_uevent,
 };
 
 static struct kset acpi_namespace_kset = {
···
 		 },
 	.subsys = &acpi_subsys,
 	.ktype = &ktype_acpi_ns,
-	.hotplug_ops = &namespace_hotplug_ops,
+	.uevent_ops = &namespace_uevent_ops,
 };
 
 static void acpi_device_register(struct acpi_device *device,
···
 }
 
 /* --------------------------------------------------------------------------
-		ACPI hotplug sysfs device file support
+		ACPI sysfs device file support
    -------------------------------------------------------------------------- */
 static ssize_t acpi_eject_store(struct acpi_device *device,
 				const char *buf, size_t count);

drivers/base/Kconfig

···
 	  If unsure say Y here.
 
 config FW_LOADER
-	tristate "Hotplug firmware loading support"
+	tristate "Userspace firmware loading support"
 	select HOTPLUG
 	---help---
 	  This option is provided for the case where no in-kernel-tree modules
-	  require hotplug firmware loading support, but a module built outside
+	  require userspace firmware loading support, but a module built outside
 	  the kernel tree does.
 
 config DEBUG_DRIVER

drivers/base/bus.c

···
 
 	dev = bus_find_device(bus, NULL, (void *)buf, driver_helper);
 	if (dev && dev->driver == drv) {
+		if (dev->parent)	/* Needed for USB */
+			down(&dev->parent->sem);
 		device_release_driver(dev);
+		if (dev->parent)
+			up(&dev->parent->sem);
 		err = count;
 	}
 	put_device(dev);
···
 
 	dev = bus_find_device(bus, NULL, (void *)buf, driver_helper);
 	if (dev && dev->driver == NULL) {
+		if (dev->parent)	/* Needed for USB */
+			down(&dev->parent->sem);
 		down(&dev->sem);
 		err = driver_probe_device(drv, dev);
 		up(&dev->sem);
+		if (dev->parent)
+			up(&dev->parent->sem);
 	}
 	put_device(dev);
 	put_bus(bus);
···
 	}
 }
 
+#ifdef CONFIG_HOTPLUG
+/*
+ * Thanks to drivers making their tables __devinit, we can't allow manual
+ * bind and unbind from userspace unless CONFIG_HOTPLUG is enabled.
+ */
+static void add_bind_files(struct device_driver *drv)
+{
+	driver_create_file(drv, &driver_attr_unbind);
+	driver_create_file(drv, &driver_attr_bind);
+}
+
+static void remove_bind_files(struct device_driver *drv)
+{
+	driver_remove_file(drv, &driver_attr_bind);
+	driver_remove_file(drv, &driver_attr_unbind);
+}
+#else
+static inline void add_bind_files(struct device_driver *drv) {}
+static inline void remove_bind_files(struct device_driver *drv) {}
+#endif
 
 /**
  *	bus_add_driver - Add a driver to the bus.
···
 		module_add_driver(drv->owner, drv);
 
 		driver_add_attrs(bus, drv);
-		driver_create_file(drv, &driver_attr_unbind);
-		driver_create_file(drv, &driver_attr_bind);
+		add_bind_files(drv);
 	}
 	return error;
 }
···
 void bus_remove_driver(struct device_driver * drv)
 {
 	if (drv->bus) {
-		driver_remove_file(drv, &driver_attr_bind);
-		driver_remove_file(drv, &driver_attr_unbind);
+		remove_bind_files(drv);
 		driver_remove_attrs(drv->bus, drv);
 		klist_remove(&drv->knode_bus);
 		pr_debug("bus %s: remove driver %s\n", drv->bus->name, drv->name);
···
 /* Helper for bus_rescan_devices's iter */
 static int bus_rescan_devices_helper(struct device *dev, void *data)
 {
-	if (!dev->driver)
+	if (!dev->driver) {
+		if (dev->parent)	/* Needed for USB */
+			down(&dev->parent->sem);
 		device_attach(dev);
+		if (dev->parent)
+			up(&dev->parent->sem);
+	}
 	return 0;
 }
 

drivers/base/class.c

···
 }
 
 /* needed to allow these devices to have parent class devices */
-static int class_device_create_hotplug(struct class_device *class_dev,
+static int class_device_create_uevent(struct class_device *class_dev,
 				       char **envp, int num_envp,
 				       char *buffer, int buffer_size)
 {
···
 	.release	= class_dev_release,
 };
 
-static int class_hotplug_filter(struct kset *kset, struct kobject *kobj)
+static int class_uevent_filter(struct kset *kset, struct kobject *kobj)
 {
 	struct kobj_type *ktype = get_ktype(kobj);
 
···
 	return 0;
 }
 
-static const char *class_hotplug_name(struct kset *kset, struct kobject *kobj)
+static const char *class_uevent_name(struct kset *kset, struct kobject *kobj)
 {
 	struct class_device *class_dev = to_class_dev(kobj);
 
 	return class_dev->class->name;
 }
 
-static int class_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
+static int class_uevent(struct kset *kset, struct kobject *kobj, char **envp,
 			 int num_envp, char *buffer, int buffer_size)
 {
 	struct class_device *class_dev = to_class_dev(kobj);
···
 		struct device *dev = class_dev->dev;
 		char *path = kobject_get_path(&dev->kobj, GFP_KERNEL);
 
-		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
-				    &length, "PHYSDEVPATH=%s", path);
+		add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
+			       &length, "PHYSDEVPATH=%s", path);
 		kfree(path);
 
 		if (dev->bus)
-			add_hotplug_env_var(envp, num_envp, &i,
-					    buffer, buffer_size, &length,
-					    "PHYSDEVBUS=%s", dev->bus->name);
+			add_uevent_var(envp, num_envp, &i,
+				       buffer, buffer_size, &length,
+				       "PHYSDEVBUS=%s", dev->bus->name);
 
 		if (dev->driver)
-			add_hotplug_env_var(envp, num_envp, &i,
-					    buffer, buffer_size, &length,
-					    "PHYSDEVDRIVER=%s", dev->driver->name);
+			add_uevent_var(envp, num_envp, &i,
+				       buffer, buffer_size, &length,
+				       "PHYSDEVDRIVER=%s", dev->driver->name);
 	}
 
 	if (MAJOR(class_dev->devt)) {
-		add_hotplug_env_var(envp, num_envp, &i,
-				    buffer, buffer_size, &length,
-				    "MAJOR=%u", MAJOR(class_dev->devt));
+		add_uevent_var(envp, num_envp, &i,
+			       buffer, buffer_size, &length,
+			       "MAJOR=%u", MAJOR(class_dev->devt));
 
-		add_hotplug_env_var(envp, num_envp, &i,
-				    buffer, buffer_size, &length,
-				    "MINOR=%u", MINOR(class_dev->devt));
+		add_uevent_var(envp, num_envp, &i,
+			       buffer, buffer_size, &length,
+			       "MINOR=%u", MINOR(class_dev->devt));
 	}
 
 	/* terminate, set to next free slot, shrink available space */
···
 	buffer = &buffer[length];
 	buffer_size -= length;
 
-	if (class_dev->hotplug) {
+	if (class_dev->uevent) {
 		/* have the class device specific function add its stuff */
-		retval = class_dev->hotplug(class_dev, envp, num_envp,
+		retval = class_dev->uevent(class_dev, envp, num_envp,
 					    buffer, buffer_size);
 		if (retval)
-			pr_debug("class_dev->hotplug() returned %d\n", retval);
-	} else if (class_dev->class->hotplug) {
+			pr_debug("class_dev->uevent() returned %d\n", retval);
+	} else if (class_dev->class->uevent) {
 		/* have the class specific function add its stuff */
-		retval = class_dev->class->hotplug(class_dev, envp, num_envp,
+		retval = class_dev->class->uevent(class_dev, envp, num_envp,
 						   buffer, buffer_size);
 		if (retval)
-			pr_debug("class->hotplug() returned %d\n", retval);
+			pr_debug("class->uevent() returned %d\n", retval);
 	}
 
 	return retval;
 }
 
-static struct kset_hotplug_ops class_hotplug_ops = {
-	.filter =	class_hotplug_filter,
-	.name =		class_hotplug_name,
-	.hotplug =	class_hotplug,
+static struct kset_uevent_ops class_uevent_ops = {
+	.filter =	class_uevent_filter,
+	.name =		class_uevent_name,
+	.uevent =	class_uevent,
 };
 
-static decl_subsys(class_obj, &ktype_class_device, &class_hotplug_ops);
+static decl_subsys(class_obj, &ktype_class_device, &class_uevent_ops);
 
 
 static int class_device_add_attrs(struct class_device * cd)
···
 static ssize_t store_uevent(struct class_device *class_dev,
 			    const char *buf, size_t count)
 {
-	kobject_hotplug(&class_dev->kobj, KOBJ_ADD);
+	kobject_uevent(&class_dev->kobj, KOBJ_ADD);
 	return count;
 }
 
···
 				  class_name);
 	}
 
-	kobject_hotplug(&class_dev->kobj, KOBJ_ADD);
+	kobject_uevent(&class_dev->kobj, KOBJ_ADD);
 
 	/* notify any interfaces this device is now here */
 	if (parent_class) {
···
 	class_dev->class = cls;
 	class_dev->parent = parent;
 	class_dev->release = class_device_create_release;
-	class_dev->hotplug = class_device_create_hotplug;
+	class_dev->uevent = class_device_create_uevent;
 
 	va_start(args, fmt);
 	vsnprintf(class_dev->class_id, BUS_ID_SIZE, fmt, args);
···
 		class_device_remove_file(class_dev, class_dev->devt_attr);
 	class_device_remove_attrs(class_dev);
 
-	kobject_hotplug(&class_dev->kobj, KOBJ_REMOVE);
+	kobject_uevent(&class_dev->kobj, KOBJ_REMOVE);
 	kobject_del(&class_dev->kobj);
 
 	class_device_put(parent_device);

drivers/base/core.c

···
 };
 
 
-static int dev_hotplug_filter(struct kset *kset, struct kobject *kobj)
+static int dev_uevent_filter(struct kset *kset, struct kobject *kobj)
 {
 	struct kobj_type *ktype = get_ktype(kobj);
 
···
 	return 0;
 }
 
-static const char *dev_hotplug_name(struct kset *kset, struct kobject *kobj)
+static const char *dev_uevent_name(struct kset *kset, struct kobject *kobj)
 {
 	struct device *dev = to_dev(kobj);
 
 	return dev->bus->name;
 }
 
-static int dev_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
+static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp,
 			int num_envp, char *buffer, int buffer_size)
 {
 	struct device *dev = to_dev(kobj);
···
 
 	/* add bus name of physical device */
 	if (dev->bus)
-		add_hotplug_env_var(envp, num_envp, &i,
-				    buffer, buffer_size, &length,
-				    "PHYSDEVBUS=%s", dev->bus->name);
+		add_uevent_var(envp, num_envp, &i,
+			       buffer, buffer_size, &length,
+			       "PHYSDEVBUS=%s", dev->bus->name);
 
 	/* add driver name of physical device */
 	if (dev->driver)
-		add_hotplug_env_var(envp, num_envp, &i,
-				    buffer, buffer_size, &length,
-				    "PHYSDEVDRIVER=%s", dev->driver->name);
+		add_uevent_var(envp, num_envp, &i,
+			       buffer, buffer_size, &length,
+			       "PHYSDEVDRIVER=%s", dev->driver->name);
 
 	/* terminate, set to next free slot, shrink available space */
 	envp[i] = NULL;
···
 	buffer = &buffer[length];
 	buffer_size -= length;
 
-	if (dev->bus && dev->bus->hotplug) {
+	if (dev->bus && dev->bus->uevent) {
 		/* have the bus specific function add its stuff */
-		retval = dev->bus->hotplug (dev, envp, num_envp, buffer, buffer_size);
+		retval = dev->bus->uevent(dev, envp, num_envp, buffer, buffer_size);
 			if (retval) {
-			pr_debug ("%s - hotplug() returned %d\n",
+			pr_debug ("%s - uevent() returned %d\n",
 				  __FUNCTION__, retval);
 		}
 	}
···
 	return retval;
 }
 
-static struct kset_hotplug_ops device_hotplug_ops = {
-	.filter =	dev_hotplug_filter,
-	.name =		dev_hotplug_name,
-	.hotplug =	dev_hotplug,
+static struct kset_uevent_ops device_uevent_ops = {
+	.filter =	dev_uevent_filter,
+	.name =		dev_uevent_name,
+	.uevent =	dev_uevent,
 };
 
 static ssize_t store_uevent(struct device *dev, struct device_attribute *attr,
 			    const char *buf, size_t count)
 {
-	kobject_hotplug(&dev->kobj, KOBJ_ADD);
+	kobject_uevent(&dev->kobj, KOBJ_ADD);
 	return count;
 }
 
···
  *	device_subsys - structure to be registered with kobject core.
  */
 
-decl_subsys(devices, &ktype_device, &device_hotplug_ops);
+decl_subsys(devices, &ktype_device, &device_uevent_ops);
 
 
 /**
···
 	dev->uevent_attr.store = store_uevent;
 	device_create_file(dev, &dev->uevent_attr);
 
-	kobject_hotplug(&dev->kobj, KOBJ_ADD);
+	kobject_uevent(&dev->kobj, KOBJ_ADD);
 	if ((error = device_pm_add(dev)))
 		goto PMError;
 	if ((error = bus_add_device(dev)))
···
  BusError:
 	device_pm_remove(dev);
  PMError:
-	kobject_hotplug(&dev->kobj, KOBJ_REMOVE);
+	kobject_uevent(&dev->kobj, KOBJ_REMOVE);
 	kobject_del(&dev->kobj);
  Error:
 	if (parent)
···
 		platform_notify_remove(dev);
 	bus_remove_device(dev);
 	device_pm_remove(dev);
-	kobject_hotplug(&dev->kobj, KOBJ_REMOVE);
+	kobject_uevent(&dev->kobj, KOBJ_REMOVE);
 	kobject_del(&dev->kobj);
 	if (parent)
 		put_device(parent);

drivers/base/cpu.c

···
 	case '0':
 		ret = cpu_down(cpu->sysdev.id);
 		if (!ret)
-			kobject_hotplug(&dev->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&dev->kobj, KOBJ_OFFLINE);
 		break;
 	case '1':
 		ret = smp_prepare_cpu(cpu->sysdev.id);
 		if (!ret)
 			ret = cpu_up(cpu->sysdev.id);
 		if (!ret)
-			kobject_hotplug(&dev->kobj, KOBJ_ONLINE);
+			kobject_uevent(&dev->kobj, KOBJ_ONLINE);
 		break;
 	default:
 		ret = -EINVAL;

drivers/base/dd.c

···
  *	This function returns 1 if a match is found, an error if one
  *	occurs (that is not -ENODEV or -ENXIO), and 0 otherwise.
  *
- *	This function must be called with @dev->sem held.
+ *	This function must be called with @dev->sem held.  When called
+ *	for a USB interface, @dev->parent->sem must be held as well.
  */
 int driver_probe_device(struct device_driver * drv, struct device * dev)
 {
···
  *
  *	Returns 1 if the device was bound to a driver;
  *	0 if no matching device was found; error code otherwise.
+ *
+ *	When called for a USB interface, @dev->parent->sem must be held.
  */
 int device_attach(struct device * dev)
 {
···
 	 * is an error.
 	 */
 
+	if (dev->parent)	/* Needed for USB */
+		down(&dev->parent->sem);
 	down(&dev->sem);
 	if (!dev->driver)
 		driver_probe_device(drv, dev);
 	up(&dev->sem);
+	if (dev->parent)
+		up(&dev->parent->sem);
 
 	return 0;
 }
···
  *	Manually detach device from driver.
  *
  *	__device_release_driver() must be called with @dev->sem held.
+ *	When called for a USB interface, @dev->parent->sem must be held
+ *	as well.
  */
 
 static void __device_release_driver(struct device * dev)
···
 		get_device(dev);
 		spin_unlock(&drv->klist_devices.k_lock);
 
+		if (dev->parent)	/* Needed for USB */
+			down(&dev->parent->sem);
 		down(&dev->sem);
 		if (dev->driver == drv)
 			__device_release_driver(dev);
 		up(&dev->sem);
+		if (dev->parent)
+			up(&dev->parent->sem);
 		put_device(dev);
 	}
 }

drivers/base/firmware_class.c

···
 static CLASS_ATTR(timeout, 0644, firmware_timeout_show, firmware_timeout_store);
 
 static void  fw_class_dev_release(struct class_device *class_dev);
-int firmware_class_hotplug(struct class_device *dev, char **envp,
+int firmware_class_uevent(struct class_device *dev, char **envp,
 			   int num_envp, char *buffer, int buffer_size);
 
 static struct class firmware_class = {
 	.name		= "firmware",
-	.hotplug	= firmware_class_hotplug,
+	.uevent	= firmware_class_uevent,
 	.release	= fw_class_dev_release,
 };
 
 int
-firmware_class_hotplug(struct class_device *class_dev, char **envp,
+firmware_class_uevent(struct class_device *class_dev, char **envp,
 		       int num_envp, char *buffer, int buffer_size)
 {
 	struct firmware_priv *fw_priv = class_get_devdata(class_dev);
···
 	if (!test_bit(FW_STATUS_READY, &fw_priv->status))
 		return -ENODEV;
 
-	if (add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size, &len,
-			"FIRMWARE=%s", fw_priv->fw_id))
+	if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
+			   "FIRMWARE=%s", fw_priv->fw_id))
 		return -ENOMEM;
-	if (add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size, &len,
-			"TIMEOUT=%i", loading_timeout))
+	if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
+			   "TIMEOUT=%i", loading_timeout))
 		return -ENOMEM;
-
 	envp[i] = NULL;
 
 	return 0;
···
 
 static int
 fw_setup_class_device(struct firmware *fw, struct class_device **class_dev_p,
-		      const char *fw_name, struct device *device, int hotplug)
+		      const char *fw_name, struct device *device, int uevent)
 {
 	struct class_device *class_dev;
 	struct firmware_priv *fw_priv;
···
 		goto error_unreg;
 	}
 
-	if (hotplug)
+	if (uevent)
                 set_bit(FW_STATUS_READY, &fw_priv->status);
         else
                 set_bit(FW_STATUS_READY_NOHOTPLUG, &fw_priv->status);
···
 
 static int
 _request_firmware(const struct firmware **firmware_p, const char *name,
-		 struct device *device, int hotplug)
+		 struct device *device, int uevent)
 {
 	struct class_device *class_dev;
 	struct firmware_priv *fw_priv;
···
 	}
 
 	retval = fw_setup_class_device(firmware, &class_dev, name, device,
-		hotplug);
+				       uevent);
 	if (retval)
 		goto error_kfree_fw;
 
 	fw_priv = class_get_devdata(class_dev);
 
-	if (hotplug) {
+	if (uevent) {
 		if (loading_timeout > 0) {
 			fw_priv->timeout.expires = jiffies + loading_timeout * HZ;
 			add_timer(&fw_priv->timeout);
 		}
 
-		kobject_hotplug(&class_dev->kobj, KOBJ_ADD);
+		kobject_uevent(&class_dev->kobj, KOBJ_ADD);
 		wait_for_completion(&fw_priv->completion);
 		set_bit(FW_STATUS_DONE, &fw_priv->status);
 		del_timer_sync(&fw_priv->timeout);
···
 }
 
 /**
- * request_firmware: - request firmware to hotplug and wait for it
+ * request_firmware: - send firmware request and wait for it
  * @firmware_p: pointer to firmware image
  * @name: name of firmware file
  * @device: device for which firmware is being loaded
···
  *
  *      Should be called from user context where sleeping is allowed.
  *
- *      @name will be used as $FIRMWARE in the hotplug environment and
+ *      @name will be used as $FIRMWARE in the uevent environment and
  *      should be distinctive enough not to be confused with any other
  *      firmware image for this or any other device.
  **/
···
 request_firmware(const struct firmware **firmware_p, const char *name,
                  struct device *device)
 {
-        int hotplug = 1;
-        return _request_firmware(firmware_p, name, device, hotplug);
+        int uevent = 1;
+        return _request_firmware(firmware_p, name, device, uevent);
 }
 
 /**
···
 	struct device *device;
 	void *context;
 	void (*cont)(const struct firmware *fw, void *context);
-	int hotplug;
+	int uevent;
 };
 
 static int
···
 	}
 	daemonize("%s/%s", "firmware", fw_work->name);
 	ret = _request_firmware(&fw, fw_work->name, fw_work->device,
-		fw_work->hotplug);
+		fw_work->uevent);
 	if (ret < 0)
 		fw_work->cont(NULL, fw_work->context);
 	else {
···
 /**
  * request_firmware_nowait: asynchronous version of request_firmware
  * @module: module requesting the firmware
- * @hotplug: invokes hotplug event to copy the firmware image if this flag
+ * @uevent: sends uevent to copy the firmware image if this flag
  *	is non-zero else the firmware copy must be done manually.
  * @name: name of firmware file
  * @device: device for which firmware is being loaded
···
  **/
 int
 request_firmware_nowait(
-	struct module *module, int hotplug,
+	struct module *module, int uevent,
 	const char *name, struct device *device, void *context,
 	void (*cont)(const struct firmware *fw, void *context))
 {
···
 		.device = device,
 		.context = context,
 		.cont = cont,
-		.hotplug = hotplug,
+		.uevent = uevent,
 	};
 
 	ret = kernel_thread(request_firmware_work_func, fw_work,

drivers/base/memory.c

···
 	set_kset_name(MEMORY_CLASS_NAME),
 };
 
-static char *memory_hotplug_name(struct kset *kset, struct kobject *kobj)
+static const char *memory_uevent_name(struct kset *kset, struct kobject *kobj)
 {
 	return MEMORY_CLASS_NAME;
 }
 
-static int memory_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
+static int memory_uevent(struct kset *kset, struct kobject *kobj, char **envp,
 			int num_envp, char *buffer, int buffer_size)
 {
 	int retval = 0;
···
 	return retval;
 }
 
-static struct kset_hotplug_ops memory_hotplug_ops = {
-	.name		= memory_hotplug_name,
-	.hotplug	= memory_hotplug,
+static struct kset_uevent_ops memory_uevent_ops = {
+	.name		= memory_uevent_name,
+	.uevent		= memory_uevent,
 };
 
 static struct notifier_block *memory_chain;
···
 	unsigned int i;
 	int ret;
 
-	memory_sysdev_class.kset.hotplug_ops = &memory_hotplug_ops;
+	memory_sysdev_class.kset.uevent_ops = &memory_uevent_ops;
 	ret = sysdev_class_register(&memory_sysdev_class);
 
 	/*

drivers/base/platform.c

···
 struct device platform_bus = {
 	.bus_id		= "platform",
 };
+EXPORT_SYMBOL_GPL(platform_bus);
 
 /**
  *	platform_get_resource - get a resource for a device
···
 	}
 	return NULL;
 }
+EXPORT_SYMBOL_GPL(platform_get_resource);
 
 /**
  *	platform_get_irq - get an IRQ for a device
···
 
 	return r ? r->start : 0;
 }
+EXPORT_SYMBOL_GPL(platform_get_irq);
 
 /**
  *	platform_get_resource_byname - get a resource for a device by name
···
 	}
 	return NULL;
 }
+EXPORT_SYMBOL_GPL(platform_get_resource_byname);
 
 /**
  *	platform_get_irq - get an IRQ for a device
···
 
 	return r ? r->start : 0;
 }
+EXPORT_SYMBOL_GPL(platform_get_irq_byname);
 
 /**
  *	platform_add_devices - add a numbers of platform devices
···
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(platform_add_devices);
 
 struct platform_object {
 	struct platform_device pdev;
···
 		pa->pdev.dev.release = platform_device_release;
 	}
 
-	return pa ? &pa->pdev : NULL;	
+	return pa ? &pa->pdev : NULL;
 }
 EXPORT_SYMBOL_GPL(platform_device_alloc);
 
···
 				p = &ioport_resource;
 		}
 
-		if (p && request_resource(p, r)) {
+		if (p && insert_resource(p, r)) {
 			printk(KERN_ERR
 			       "%s: failed to claim resource %d\n",
 			       pdev->dev.bus_id, i);
···
 EXPORT_SYMBOL_GPL(platform_device_add);
 
 /**
- *	platform_device_register - add a platform-level device
- *	@pdev:	platform device we're adding
- *
- */
-int platform_device_register(struct platform_device * pdev)
-{
-	device_initialize(&pdev->dev);
-	return platform_device_add(pdev);
-}
-
-/**
- *	platform_device_unregister - remove a platform-level device
+ *	platform_device_del - remove a platform-level device
  *	@pdev:	platform device we're removing
  *
  *	Note that this function will also release all memory- and port-based
  *	resources owned by the device (@dev->resource).
  */
-void platform_device_unregister(struct platform_device * pdev)
+void platform_device_del(struct platform_device *pdev)
 {
 	int i;
 
···
 				release_resource(r);
 		}
 
-		device_unregister(&pdev->dev);
+		device_del(&pdev->dev);
 	}
 }
+EXPORT_SYMBOL_GPL(platform_device_del);
+
+/**
+ *	platform_device_register - add a platform-level device
+ *	@pdev:	platform device we're adding
+ *
+ */
+int platform_device_register(struct platform_device * pdev)
+{
+	device_initialize(&pdev->dev);
+	return platform_device_add(pdev);
+}
+EXPORT_SYMBOL_GPL(platform_device_register);
+
+/**
+ *	platform_device_unregister - unregister a platform-level device
+ *	@pdev:	platform device we're unregistering
+ *
+ *	Unregistration is done in 2 steps. Fisrt we release all resources
+ *	and remove it from the sybsystem, then we drop reference count by
+ *	calling platform_device_put().
+ */
+void platform_device_unregister(struct platform_device * pdev)
+{
+	platform_device_del(pdev);
+	platform_device_put(pdev);
+}
+EXPORT_SYMBOL_GPL(platform_device_unregister);
 
 /**
  *	platform_device_register_simple
···
 	platform_device_put(pdev);
 	return ERR_PTR(retval);
 }
+EXPORT_SYMBOL_GPL(platform_device_register_simple);
 
 static int platform_drv_probe(struct device *_dev)
 {
···
 	.suspend	= platform_suspend,
 	.resume		= platform_resume,
 };
+EXPORT_SYMBOL_GPL(platform_bus_type);
 
 int __init platform_bus_init(void)
 {
···
 }
 EXPORT_SYMBOL_GPL(dma_get_required_mask);
 #endif
-
-EXPORT_SYMBOL_GPL(platform_bus);
-EXPORT_SYMBOL_GPL(platform_bus_type);
-EXPORT_SYMBOL_GPL(platform_add_devices);
-EXPORT_SYMBOL_GPL(platform_device_register);
-EXPORT_SYMBOL_GPL(platform_device_register_simple);
-EXPORT_SYMBOL_GPL(platform_device_unregister);
-EXPORT_SYMBOL_GPL(platform_get_irq);
-EXPORT_SYMBOL_GPL(platform_get_resource);
-EXPORT_SYMBOL_GPL(platform_get_irq_byname);
-EXPORT_SYMBOL_GPL(platform_get_resource_byname);

drivers/base/power/runtime.c

···
 }
 
 
+#if 0
 /**
  *	dpm_set_power_state - Update power_state field.
  *	@dev:	Device.
···
 	dev->power.power_state = state;
 	up(&dpm_sem);
 }
+#endif  /*  0  */

drivers/ide/ide-cd.c

···
 	return driver_register(&ide_cdrom_driver.gen_driver);
 }
 
+MODULE_ALIAS("ide:*m-cdrom*");
 module_init(ide_cdrom_init);
 module_exit(ide_cdrom_exit);
 MODULE_LICENSE("GPL");

drivers/ide/ide-disk.c

···
 	return driver_register(&idedisk_driver.gen_driver);
 }
 
+MODULE_ALIAS("ide:*m-disk*");
 module_init(idedisk_init);
 module_exit(idedisk_exit);
 MODULE_LICENSE("GPL");

drivers/ide/ide-floppy.c

···
 	return driver_register(&idefloppy_driver.gen_driver);
 }
 
+MODULE_ALIAS("ide:*m-floppy*");
 module_init(idefloppy_init);
 module_exit(idefloppy_exit);
 MODULE_LICENSE("GPL");

drivers/ide/ide-tape.c

···
 	return error;
 }
 
+MODULE_ALIAS("ide:*m-tape*");
 module_init(idetape_init);
 module_exit(idetape_exit);
 MODULE_ALIAS_CHARDEV_MAJOR(IDETAPE_MAJOR);

drivers/ide/ide.c

···
 	return 1;
 }
 
+static char *media_string(ide_drive_t *drive)
+{
+	switch (drive->media) {
+	case ide_disk:
+		return "disk";
+	case ide_cdrom:
+		return "cdrom";
+	case ide_tape:
+		return "tape";
+	case ide_floppy:
+		return "floppy";
+	default:
+		return "UNKNOWN";
+	}
+}
+
+static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	ide_drive_t *drive = to_ide_device(dev);
+	return sprintf(buf, "%s\n", media_string(drive));
+}
+
+static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	ide_drive_t *drive = to_ide_device(dev);
+	return sprintf(buf, "%s\n", drive->name);
+}
+
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	ide_drive_t *drive = to_ide_device(dev);
+	return sprintf(buf, "ide:m-%s\n", media_string(drive));
+}
+
+static struct device_attribute ide_dev_attrs[] = {
+	__ATTR_RO(media),
+	__ATTR_RO(drivename),
+	__ATTR_RO(modalias),
+	__ATTR_NULL
+};
+
+static int ide_uevent(struct device *dev, char **envp, int num_envp,
+		      char *buffer, int buffer_size)
+{
+	ide_drive_t *drive = to_ide_device(dev);
+	int i = 0;
+	int length = 0;
+
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "MEDIA=%s", media_string(drive));
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "DRIVENAME=%s", drive->name);
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "MODALIAS=ide:m-%s", media_string(drive));
+	envp[i] = NULL;
+	return 0;
+}
+
 struct bus_type ide_bus_type = {
 	.name		= "ide",
 	.match		= ide_bus_match,
+	.uevent		= ide_uevent,
+	.dev_attrs	= ide_dev_attrs,
 	.suspend	= generic_ide_suspend,
 	.resume		= generic_ide_resume,
 };

drivers/ieee1394/nodemgr.c

···
 };
 
 static int nodemgr_bus_match(struct device * dev, struct device_driver * drv);
-static int nodemgr_hotplug(struct class_device *cdev, char **envp, int num_envp,
-			   char *buffer, int buffer_size);
+static int nodemgr_uevent(struct class_device *cdev, char **envp, int num_envp,
+			  char *buffer, int buffer_size);
 static void nodemgr_resume_ne(struct node_entry *ne);
 static void nodemgr_remove_ne(struct node_entry *ne);
 static struct node_entry *find_entry_by_guid(u64 guid);
···
 static struct class nodemgr_ud_class = {
 	.name		= "ieee1394",
 	.release	= ud_cls_release,
-	.hotplug	= nodemgr_hotplug,
+	.uevent		= nodemgr_uevent,
 };
 
 static struct hpsb_highlevel nodemgr_highlevel;
···
 				if (ud_child == NULL)
 					break;
 				
-				/* inherit unspecified values so hotplug picks it up */
+				/* inherit unspecified values, the driver core picks it up */
 				if ((ud->flags & UNIT_DIRECTORY_MODEL_ID) &&
 				    !(ud_child->flags & UNIT_DIRECTORY_MODEL_ID))
 				{
···
 
 #ifdef CONFIG_HOTPLUG
 
-static int nodemgr_hotplug(struct class_device *cdev, char **envp, int num_envp,
-			   char *buffer, int buffer_size)
+static int nodemgr_uevent(struct class_device *cdev, char **envp, int num_envp,
+			  char *buffer, int buffer_size)
 {
 	struct unit_directory *ud;
 	int i = 0;
···
 
 #else
 
-static int nodemgr_hotplug(struct class_device *cdev, char **envp, int num_envp,
-			   char *buffer, int buffer_size)
+static int nodemgr_uevent(struct class_device *cdev, char **envp, int num_envp,
+			  char *buffer, int buffer_size)
 {
 	return -ENODEV;
 }
···
 
 		/* Scan our nodes to get the bus options and create node
 		 * entries. This does not do the sysfs stuff, since that
-		 * would trigger hotplug callbacks and such, which is a
-		 * bad idea at this point. */
+		 * would trigger uevents and such, which is a bad idea at
+		 * this point. */
 		nodemgr_node_scan(hi, generation);
 
 		/* This actually does the full probe, with sysfs

drivers/infiniband/core/sysfs.c

···
 	kfree(dev);
 }
 
-static int ib_device_hotplug(struct class_device *cdev, char **envp,
-			     int num_envp, char *buf, int size)
+static int ib_device_uevent(struct class_device *cdev, char **envp,
+			    int num_envp, char *buf, int size)
 {
 	struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
 	int i = 0, len = 0;
 
-	if (add_hotplug_env_var(envp, num_envp, &i, buf, size, &len,
-				"NAME=%s", dev->name))
+	if (add_uevent_var(envp, num_envp, &i, buf, size, &len,
+			   "NAME=%s", dev->name))
 		return -ENOMEM;
 
 	/*
-	 * It might be nice to pass the node GUID to hotplug, but
+	 * It might be nice to pass the node GUID with the event, but
 	 * right now the only way to get it is to query the device
 	 * provider, and this can crash during device removal because
 	 * we are will be running after driver removal has started.
 	 * We could add a node_guid field to struct ib_device, or we
-	 * could just let the hotplug script read the node GUID from
-	 * sysfs when devices are added.
+	 * could just let userspace read the node GUID from sysfs when
+	 * devices are added.
 	 */
 
 	envp[i] = NULL;
···
 static struct class ib_class = {
 	.name    = "infiniband",
 	.release = ib_device_release,
-	.hotplug = ib_device_hotplug,
+	.uevent = ib_device_uevent,
 };
 
 int ib_device_register_sysfs(struct ib_device *device)

drivers/input/input.c

···
 #include <linux/random.h>
 #include <linux/major.h>
 #include <linux/proc_fs.h>
-#include <linux/kobject_uevent.h>
 #include <linux/interrupt.h>
 #include <linux/poll.h>
 #include <linux/device.h>
···
 INPUT_DEV_STRING_ATTR_SHOW(phys);
 INPUT_DEV_STRING_ATTR_SHOW(uniq);
 
+static int print_modalias_bits(char *buf, char prefix, unsigned long *arr,
+			       unsigned int min, unsigned int max)
+{
+	int len, i;
+
+	len = sprintf(buf, "%c", prefix);
+	for (i = min; i < max; i++)
+		if (arr[LONG(i)] & BIT(i))
+			len += sprintf(buf+len, "%X,", i);
+	return len;
+}
+
+static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf)
+{
+	struct input_dev *id = to_input_dev(dev);
+	ssize_t len = 0;
+
+	len += sprintf(buf+len, "input:b%04Xv%04Xp%04Xe%04X-",
+		       id->id.bustype,
+		       id->id.vendor,
+		       id->id.product,
+		       id->id.version);
+
+	len += print_modalias_bits(buf+len, 'e', id->evbit, 0, EV_MAX);
+	len += print_modalias_bits(buf+len, 'k', id->keybit,
+				   KEY_MIN_INTERESTING, KEY_MAX);
+	len += print_modalias_bits(buf+len, 'r', id->relbit, 0, REL_MAX);
+	len += print_modalias_bits(buf+len, 'a', id->absbit, 0, ABS_MAX);
+	len += print_modalias_bits(buf+len, 'm', id->mscbit, 0, MSC_MAX);
+	len += print_modalias_bits(buf+len, 'l', id->ledbit, 0, LED_MAX);
+	len += print_modalias_bits(buf+len, 's', id->sndbit, 0, SND_MAX);
+	len += print_modalias_bits(buf+len, 'f', id->ffbit, 0, FF_MAX);
+	len += print_modalias_bits(buf+len, 'w', id->swbit, 0, SW_MAX);
+	len += sprintf(buf+len, "\n");
+	return len;
+}
+static CLASS_DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL);
+
 static struct attribute *input_dev_attrs[] = {
 	&class_device_attr_name.attr,
 	&class_device_attr_phys.attr,
 	&class_device_attr_uniq.attr,
+	&class_device_attr_modalias.attr,
 	NULL
 };
 
···
 }
 
 /*
- * Input hotplugging interface - loading event handlers based on
+ * Input uevent interface - loading event handlers based on
  * device bitfields.
  */
-static int input_add_hotplug_bm_var(char **envp, int num_envp, int *cur_index,
+static int input_add_uevent_bm_var(char **envp, int num_envp, int *cur_index,
 				    char *buffer, int buffer_size, int *cur_len,
 				    const char *name, unsigned long *bitmap, int max)
 {
···
 
 #define INPUT_ADD_HOTPLUG_VAR(fmt, val...)				\
 	do {								\
-		int err = add_hotplug_env_var(envp, num_envp, &i,	\
+		int err = add_uevent_var(envp, num_envp, &i,	\
 					buffer, buffer_size, &len,	\
 					fmt, val);			\
 		if (err)						\
···
 
 #define INPUT_ADD_HOTPLUG_BM_VAR(name, bm, max)				\
 	do {								\
-		int err = input_add_hotplug_bm_var(envp, num_envp, &i,	\
+		int err = input_add_uevent_bm_var(envp, num_envp, &i,	\
 					buffer, buffer_size, &len,	\
 					name, bm, max);			\
 		if (err)						\
 			return err;					\
 	} while (0)
 
-static int input_dev_hotplug(struct class_device *cdev, char **envp,
-			     int num_envp, char *buffer, int buffer_size)
+static int input_dev_uevent(struct class_device *cdev, char **envp,
+			    int num_envp, char *buffer, int buffer_size)
 {
 	struct input_dev *dev = to_input_dev(cdev);
 	int i = 0;
···
 struct class input_class = {
 	.name			= "input",
 	.release		= input_dev_release,
-	.hotplug		= input_dev_hotplug,
+	.uevent			= input_dev_uevent,
 };
 
 struct input_dev *input_allocate_device(void)

drivers/input/serio/serio.c

···
 
 #ifdef CONFIG_HOTPLUG
 
-#define SERIO_ADD_HOTPLUG_VAR(fmt, val...)				\
+#define SERIO_ADD_UEVENT_VAR(fmt, val...)				\
 	do {								\
-		int err = add_hotplug_env_var(envp, num_envp, &i,	\
+		int err = add_uevent_var(envp, num_envp, &i,	\
 					buffer, buffer_size, &len,	\
 					fmt, val);			\
 		if (err)						\
 			return err;					\
 	} while (0)
 
-static int serio_hotplug(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
+static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
 {
 	struct serio *serio;
 	int i = 0;
···
 
 	serio = to_serio_port(dev);
 
-	SERIO_ADD_HOTPLUG_VAR("SERIO_TYPE=%02x", serio->id.type);
-	SERIO_ADD_HOTPLUG_VAR("SERIO_PROTO=%02x", serio->id.proto);
-	SERIO_ADD_HOTPLUG_VAR("SERIO_ID=%02x", serio->id.id);
-	SERIO_ADD_HOTPLUG_VAR("SERIO_EXTRA=%02x", serio->id.extra);
-	SERIO_ADD_HOTPLUG_VAR("MODALIAS=serio:ty%02Xpr%02Xid%02Xex%02X",
+	SERIO_ADD_UEVENT_VAR("SERIO_TYPE=%02x", serio->id.type);
+	SERIO_ADD_UEVENT_VAR("SERIO_PROTO=%02x", serio->id.proto);
+	SERIO_ADD_UEVENT_VAR("SERIO_ID=%02x", serio->id.id);
+	SERIO_ADD_UEVENT_VAR("SERIO_EXTRA=%02x", serio->id.extra);
+	SERIO_ADD_UEVENT_VAR("MODALIAS=serio:ty%02Xpr%02Xid%02Xex%02X",
 				serio->id.type, serio->id.proto, serio->id.id, serio->id.extra);
 	envp[i] = NULL;
 
 	return 0;
 }
-#undef SERIO_ADD_HOTPLUG_VAR
+#undef SERIO_ADD_UEVENT_VAR
 
 #else
 
-static int serio_hotplug(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
+static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
 {
 	return -ENODEV;
 }
···
 	serio_bus.dev_attrs = serio_device_attrs;
 	serio_bus.drv_attrs = serio_driver_attrs;
 	serio_bus.match = serio_bus_match;
-	serio_bus.hotplug = serio_hotplug;
+	serio_bus.uevent = serio_uevent;
 	serio_bus.resume = serio_resume;
 	bus_register(&serio_bus);
 

drivers/macintosh/macio_asic.c

···
 	return 0;
 }
 
-static int macio_hotplug (struct device *dev, char **envp, int num_envp,
+static int macio_uevent(struct device *dev, char **envp, int num_envp,
                           char *buffer, int buffer_size)
 {
 	struct macio_dev * macio_dev;
···
 struct bus_type macio_bus_type = {
        .name	= "macio",
        .match	= macio_bus_match,
-       .hotplug = macio_hotplug,
+       .uevent = macio_uevent,
        .suspend	= macio_device_suspend,
        .resume	= macio_device_resume,
        .dev_attrs = macio_dev_attrs,

drivers/mmc/mmc_sysfs.c

···
 }
 
 static int
-mmc_bus_hotplug(struct device *dev, char **envp, int num_envp, char *buf,
+mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf,
 		int buf_size)
 {
 	struct mmc_card *card = dev_to_mmc_card(dev);
···
 	.name		= "mmc",
 	.dev_attrs	= mmc_dev_attrs,
 	.match		= mmc_bus_match,
-	.hotplug	= mmc_bus_hotplug,
+	.uevent		= mmc_bus_uevent,
 	.suspend	= mmc_bus_suspend,
 	.resume		= mmc_bus_resume,
 };

drivers/pci/hotplug.c

···
 #include <linux/module.h>
 #include "pci.h"
 
-int pci_hotplug (struct device *dev, char **envp, int num_envp,
-		 char *buffer, int buffer_size)
+int pci_uevent(struct device *dev, char **envp, int num_envp,
+	       char *buffer, int buffer_size)
 {
 	struct pci_dev *pdev;
 	int i = 0;
···
 	if (!pdev)
 		return -ENODEV;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"PCI_CLASS=%04X", pdev->class))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "PCI_CLASS=%04X", pdev->class))
 		return -ENOMEM;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"PCI_ID=%04X:%04X", pdev->vendor, pdev->device))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "PCI_ID=%04X:%04X", pdev->vendor, pdev->device))
 		return -ENOMEM;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor,
-				pdev->subsystem_device))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor,
+			   pdev->subsystem_device))
 		return -ENOMEM;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"PCI_SLOT_NAME=%s", pci_name(pdev)))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "PCI_SLOT_NAME=%s", pci_name(pdev)))
 		return -ENOMEM;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x",
-				pdev->vendor, pdev->device,
-				pdev->subsystem_vendor, pdev->subsystem_device,
-				(u8)(pdev->class >> 16), (u8)(pdev->class >> 8),
-				(u8)(pdev->class)))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x",
+			   pdev->vendor, pdev->device,
+			   pdev->subsystem_vendor, pdev->subsystem_device,
+			   (u8)(pdev->class >> 16), (u8)(pdev->class >> 8),
+			   (u8)(pdev->class)))
 		return -ENOMEM;
 
 	envp[i] = NULL;

drivers/pci/pci-driver.c

···
 }
 
 #ifndef CONFIG_HOTPLUG
-int pci_hotplug (struct device *dev, char **envp, int num_envp,
-		 char *buffer, int buffer_size)
+int pci_uevent(struct device *dev, char **envp, int num_envp,
+	       char *buffer, int buffer_size)
 {
 	return -ENODEV;
 }
···
 struct bus_type pci_bus_type = {
 	.name		= "pci",
 	.match		= pci_bus_match,
-	.hotplug	= pci_hotplug,
+	.uevent		= pci_uevent,
 	.suspend	= pci_device_suspend,
 	.resume		= pci_device_resume,
 	.dev_attrs	= pci_dev_attrs,

drivers/pci/pci.h

···
 /* Functions internal to the PCI core code */
 
-extern int pci_hotplug (struct device *dev, char **envp, int num_envp,
-			 char *buffer, int buffer_size);
+extern int pci_uevent(struct device *dev, char **envp, int num_envp,
+		      char *buffer, int buffer_size);
 extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
 extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
 extern void pci_cleanup_rom(struct pci_dev *dev);

drivers/pcmcia/cs.c

···
 EXPORT_SYMBOL(pcmcia_insert_card);
 
 
-static int pcmcia_socket_hotplug(struct class_device *dev, char **envp,
-				int num_envp, char *buffer, int buffer_size)
+static int pcmcia_socket_uevent(struct class_device *dev, char **envp,
+			        int num_envp, char *buffer, int buffer_size)
 {
 	struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev);
 	int i = 0, length = 0;
 
-	if (add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
-				&length, "SOCKET_NO=%u", s->sock))
+	if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size,
+			   &length, "SOCKET_NO=%u", s->sock))
 		return -ENOMEM;
 
 	envp[i] = NULL;
···
 
 struct class pcmcia_socket_class = {
 	.name = "pcmcia_socket",
-        .hotplug = pcmcia_socket_hotplug,
+	.uevent = pcmcia_socket_uevent,
 	.release = pcmcia_release_socket,
 	.class_release = pcmcia_release_socket_class,
 };

drivers/pcmcia/ds.c

···
 
 #ifdef CONFIG_HOTPLUG
 
-static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
-			      char *buffer, int buffer_size)
+static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
+			     char *buffer, int buffer_size)
 {
 	struct pcmcia_device *p_dev;
 	int i, length = 0;
···
 
 	i = 0;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"SOCKET_NO=%u",
-				p_dev->socket->sock))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "SOCKET_NO=%u",
+			   p_dev->socket->sock))
 		return -ENOMEM;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"DEVICE_NO=%02X",
-				p_dev->device_no))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "DEVICE_NO=%02X",
+			   p_dev->device_no))
 		return -ENOMEM;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
-				"pa%08Xpb%08Xpc%08Xpd%08X",
-				p_dev->has_manf_id ? p_dev->manf_id : 0,
-				p_dev->has_card_id ? p_dev->card_id : 0,
-				p_dev->has_func_id ? p_dev->func_id : 0,
-				p_dev->func,
-				p_dev->device_no,
-				hash[0],
-				hash[1],
-				hash[2],
-				hash[3]))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
+			   "pa%08Xpb%08Xpc%08Xpd%08X",
+			   p_dev->has_manf_id ? p_dev->manf_id : 0,
+			   p_dev->has_card_id ? p_dev->card_id : 0,
+			   p_dev->has_func_id ? p_dev->func_id : 0,
+			   p_dev->func,
+			   p_dev->device_no,
+			   hash[0],
+			   hash[1],
+			   hash[2],
+			   hash[3]))
 		return -ENOMEM;
 
 	envp[i] = NULL;
···
 
 #else
 
-static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
+static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
 			      char *buffer, int buffer_size)
 {
 	return -ENODEV;
···
 
 struct bus_type pcmcia_bus_type = {
 	.name = "pcmcia",
-	.hotplug = pcmcia_bus_hotplug,
+	.uevent = pcmcia_bus_uevent,
 	.match = pcmcia_bus_match,
 	.dev_attrs = pcmcia_dev_attrs,
 };

drivers/pnp/pnpbios/core.c

···
 #include <linux/mm.h>
 #include <linux/smp.h>
 #include <linux/slab.h>
-#include <linux/kobject_uevent.h>
 #include <linux/completion.h>
 #include <linux/spinlock.h>
 #include <linux/dmi.h>
···
 	char *argv [3], **envp, *buf, *scratch;
 	int i = 0, value;
 
-	if (!hotplug_path [0])
-		return -ENOENT;
 	if (!current->fs->root) {
 		return -EAGAIN;
 	}
···
 		return -ENOMEM;
 	}
 
-	/* only one standardized param to hotplug command: type */
-	argv [0] = hotplug_path;
+	/* FIXME: if there are actual users of this, it should be integrated into
+	 * the driver core and use the usual infrastructure like sysfs and uevents */
+	argv [0] = "/sbin/pnpbios";
 	argv [1] = "dock";
 	argv [2] = NULL;
 

drivers/s390/cio/ccwgroup.c

···
 	return 0;
 }
 static int
-ccwgroup_hotplug (struct device *dev, char **envp, int num_envp, char *buffer,
+ccwgroup_uevent (struct device *dev, char **envp, int num_envp, char *buffer,
 		  int buffer_size)
 {
 	/* TODO */
···
 static struct bus_type ccwgroup_bus_type = {
 	.name    = "ccwgroup",
 	.match   = ccwgroup_bus_match,
-	.hotplug = ccwgroup_hotplug,
+	.uevent = ccwgroup_uevent,
 };
 
 static inline void

drivers/s390/cio/device.c

···
  * Heavily modeled on pci and usb hotplug.
  */
 static int
-ccw_hotplug (struct device *dev, char **envp, int num_envp,
+ccw_uevent (struct device *dev, char **envp, int num_envp,
 	     char *buffer, int buffer_size)
 {
 	struct ccw_device *cdev = to_ccwdev(dev);
···
 struct bus_type ccw_bus_type = {
 	.name  = "ccw",
 	.match = &ccw_bus_match,
-	.hotplug = &ccw_hotplug,
+	.uevent = &ccw_uevent,
 };
 
 static int io_subchannel_probe (struct device *);

drivers/s390/crypto/z90main.c

···
 #include <linux/miscdevice.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/kobject_uevent.h>
 #include <linux/proc_fs.h>
 #include <linux/syscalls.h>
 #include "z90crypt.h"

drivers/scsi/ipr.c

···
 	}
 
 	spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
-	kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL);
+	kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
 	LEAVE;
 }
 

drivers/usb/core/usb.c

···
 	iface->condition = USB_INTERFACE_UNBOUND;
 	mark_quiesced(iface);
 }
+
 struct find_interface_arg {
 	int minor;
 	struct usb_interface *interface;
···
 #ifdef	CONFIG_HOTPLUG
 
 /*
- * USB hotplugging invokes what /proc/sys/kernel/hotplug says
- * (normally /sbin/hotplug) when USB devices get added or removed.
- *
- * This invokes a user mode policy agent, typically helping to load driver
+ * This sends an uevent to userspace, typically helping to load driver
  * or other modules, configure the device, and more.  Drivers can provide
  * a MODULE_DEVICE_TABLE to help with module loading subtasks.
  *
···
  * delays in event delivery.  Use sysfs (and DEVPATH) to make sure the
  * device (and this configuration!) are still present.
  */
-static int usb_hotplug (struct device *dev, char **envp, int num_envp,
-			char *buffer, int buffer_size)
+static int usb_uevent(struct device *dev, char **envp, int num_envp,
+		      char *buffer, int buffer_size)
 {
 	struct usb_interface *intf;
 	struct usb_device *usb_dev;
···
 		return -ENODEV;
 
 	/* driver is often null here; dev_dbg() would oops */
-	pr_debug ("usb %s: hotplug\n", dev->bus_id);
+	pr_debug ("usb %s: uevent\n", dev->bus_id);
 
 	/* Must check driver_data here, as on remove driver is always NULL */
 	if ((dev->driver == &usb_generic_driver) || 
···
 	 *
 	 * FIXME reduce hardwired intelligence here
 	 */
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"DEVICE=/proc/bus/usb/%03d/%03d",
-				usb_dev->bus->busnum, usb_dev->devnum))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "DEVICE=/proc/bus/usb/%03d/%03d",
+			   usb_dev->bus->busnum, usb_dev->devnum))
 		return -ENOMEM;
 #endif
 
 	/* per-device configurations are common */
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"PRODUCT=%x/%x/%x",
-				le16_to_cpu(usb_dev->descriptor.idVendor),
-				le16_to_cpu(usb_dev->descriptor.idProduct),
-				le16_to_cpu(usb_dev->descriptor.bcdDevice)))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "PRODUCT=%x/%x/%x",
+			   le16_to_cpu(usb_dev->descriptor.idVendor),
+			   le16_to_cpu(usb_dev->descriptor.idProduct),
+			   le16_to_cpu(usb_dev->descriptor.bcdDevice)))
 		return -ENOMEM;
 
 	/* class-based driver binding models */
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"TYPE=%d/%d/%d",
-				usb_dev->descriptor.bDeviceClass,
-				usb_dev->descriptor.bDeviceSubClass,
-				usb_dev->descriptor.bDeviceProtocol))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "TYPE=%d/%d/%d",
+			   usb_dev->descriptor.bDeviceClass,
+			   usb_dev->descriptor.bDeviceSubClass,
+			   usb_dev->descriptor.bDeviceProtocol))
 		return -ENOMEM;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"INTERFACE=%d/%d/%d",
-				alt->desc.bInterfaceClass,
-				alt->desc.bInterfaceSubClass,
-				alt->desc.bInterfaceProtocol))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "INTERFACE=%d/%d/%d",
+			   alt->desc.bInterfaceClass,
+			   alt->desc.bInterfaceSubClass,
+			   alt->desc.bInterfaceProtocol))
 		return -ENOMEM;
 
-	if (add_hotplug_env_var(envp, num_envp, &i,
-				buffer, buffer_size, &length,
-				"MODALIAS=usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X",
-				le16_to_cpu(usb_dev->descriptor.idVendor),
-				le16_to_cpu(usb_dev->descriptor.idProduct),
-				le16_to_cpu(usb_dev->descriptor.bcdDevice),
-				usb_dev->descriptor.bDeviceClass,
-				usb_dev->descriptor.bDeviceSubClass,
-				usb_dev->descriptor.bDeviceProtocol,
-				alt->desc.bInterfaceClass,
-				alt->desc.bInterfaceSubClass,
-				alt->desc.bInterfaceProtocol))
+	if (add_uevent_var(envp, num_envp, &i,
+			   buffer, buffer_size, &length,
+			   "MODALIAS=usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X",
+			   le16_to_cpu(usb_dev->descriptor.idVendor),
+			   le16_to_cpu(usb_dev->descriptor.idProduct),
+			   le16_to_cpu(usb_dev->descriptor.bcdDevice),
+			   usb_dev->descriptor.bDeviceClass,
+			   usb_dev->descriptor.bDeviceSubClass,
+			   usb_dev->descriptor.bDeviceProtocol,
+			   alt->desc.bInterfaceClass,
+			   alt->desc.bInterfaceSubClass,
+			   alt->desc.bInterfaceProtocol))
 		return -ENOMEM;
 
 	envp[i] = NULL;
···
 
 #else
 
-static int usb_hotplug (struct device *dev, char **envp,
+static int usb_uevent(struct device *dev, char **envp,
 			int num_envp, char *buffer, int buffer_size)
 {
 	return -ENODEV;
···
 struct bus_type usb_bus_type = {
 	.name =		"usb",
 	.match =	usb_device_match,
-	.hotplug =	usb_hotplug,
+	.uevent =	usb_uevent,
 	.suspend =	usb_generic_suspend,
 	.resume =	usb_generic_resume,
 };

drivers/usb/host/hc_crisv10.c

···
         device_initialize(&fake_device);
         kobject_set_name(&fake_device.kobj, "etrax_usb");
         kobject_add(&fake_device.kobj);
-        kobject_hotplug(&fake_device.kobj, KOBJ_ADD);
+	kobject_uevent(&fake_device.kobj, KOBJ_ADD);
         hc->bus->controller = &fake_device;
 	usb_register_bus(hc->bus);
 

drivers/w1/w1.c

···
 /* Default family */
 static struct w1_family w1_default_family;
 
-static int w1_hotplug(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size);
+static int w1_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size);
 
 static struct bus_type w1_bus_type = {
 	.name = "w1",
 	.match = w1_master_match,
-	.hotplug = w1_hotplug,
+	.uevent = w1_uevent,
 };
 
 struct device_driver w1_master_driver = {
···
 }
 
 #ifdef CONFIG_HOTPLUG
-static int w1_hotplug(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
+static int w1_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
 {
 	struct w1_master *md = NULL;
 	struct w1_slave *sl = NULL;
···
 		event_owner = "slave";
 		name = sl->name;
 	} else {
-		dev_dbg(dev, "Unknown hotplug event.\n");
+		dev_dbg(dev, "Unknown event.\n");
 		return -EINVAL;
 	}
 
···
 	if (dev->driver != &w1_slave_driver || !sl)
 		return 0;
 
-	err = add_hotplug_env_var(envp, num_envp, &cur_index, buffer, buffer_size, &cur_len, "W1_FID=%02X", sl->reg_num.family);
+	err = add_uevent_var(envp, num_envp, &cur_index, buffer, buffer_size, &cur_len, "W1_FID=%02X", sl->reg_num.family);
 	if (err)
 		return err;
 
-	err = add_hotplug_env_var(envp, num_envp, &cur_index, buffer, buffer_size, &cur_len, "W1_SLAVE_ID=%024LX", (u64)sl->reg_num.id);
+	err = add_uevent_var(envp, num_envp, &cur_index, buffer, buffer_size, &cur_len, "W1_SLAVE_ID=%024LX", (u64)sl->reg_num.id);
 	if (err)
 		return err;
 
 	return 0;
 };
 #else
-static int w1_hotplug(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
+static int w1_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
 {
 	return 0;
 }

fs/partitions/check.c

···
 static ssize_t part_uevent_store(struct hd_struct * p,
 				 const char *page, size_t count)
 {
-	kobject_hotplug(&p->kobj, KOBJ_ADD);
+	kobject_uevent(&p->kobj, KOBJ_ADD);
 	return count;
 }
 static ssize_t part_dev_read(struct hd_struct * p, char *page)
···
 	disk->part[part-1] = p;
 }
 
+static char *make_block_name(struct gendisk *disk)
+{
+	char *name;
+	static char *block_str = "block:";
+	int size;
+
+	size = strlen(block_str) + strlen(disk->disk_name) + 1;
+	name = kmalloc(size, GFP_KERNEL);
+	if (!name)
+		return NULL;
+	strcpy(name, block_str);
+	strcat(name, disk->disk_name);
+	return name;
+}
+
 static void disk_sysfs_symlinks(struct gendisk *disk)
 {
 	struct device *target = get_device(disk->driverfs_dev);
 	if (target) {
+		char *disk_name = make_block_name(disk);
 		sysfs_create_link(&disk->kobj,&target->kobj,"device");
-		sysfs_create_link(&target->kobj,&disk->kobj,"block");
+		if (disk_name) {
+			sysfs_create_link(&target->kobj,&disk->kobj,disk_name);
+			kfree(disk_name);
+		}
 	}
 }
 
···
 	if ((err = kobject_add(&disk->kobj)))
 		return;
 	disk_sysfs_symlinks(disk);
-	kobject_hotplug(&disk->kobj, KOBJ_ADD);
+	kobject_uevent(&disk->kobj, KOBJ_ADD);
 
 	/* No minors to use for partitions */
 	if (disk->minors == 1) {
···
 	devfs_remove_disk(disk);
 
 	if (disk->driverfs_dev) {
+		char *disk_name = make_block_name(disk);
 		sysfs_remove_link(&disk->kobj, "device");
-		sysfs_remove_link(&disk->driverfs_dev->kobj, "block");
+		if (disk_name) {
+			sysfs_remove_link(&disk->driverfs_dev->kobj, disk_name);
+			kfree(disk_name);
+		}
 		put_device(disk->driverfs_dev);
 	}
-	kobject_hotplug(&disk->kobj, KOBJ_REMOVE);
+	kobject_uevent(&disk->kobj, KOBJ_REMOVE);
 	kobject_del(&disk->kobj);
 }

fs/super.c

···
 	return (void *)s->s_bdev == data;
 }
 
-static void bdev_uevent(struct block_device *bdev, enum kobject_action action)
-{
-	if (bdev->bd_disk) {
-		if (bdev->bd_part)
-			kobject_uevent(&bdev->bd_part->kobj, action, NULL);
-		else
-			kobject_uevent(&bdev->bd_disk->kobj, action, NULL);
-	}
-}
-
 struct super_block *get_sb_bdev(struct file_system_type *fs_type,
 	int flags, const char *dev_name, void *data,
 	int (*fill_super)(struct super_block *, void *, int))
···
 			up_write(&s->s_umount);
 			deactivate_super(s);
 			s = ERR_PTR(error);
-		} else {
+		} else
 			s->s_flags |= MS_ACTIVE;
-			bdev_uevent(bdev, KOBJ_MOUNT);
-		}
 	}
 
 	return s;
···
 {
 	struct block_device *bdev = sb->s_bdev;
 
-	bdev_uevent(bdev, KOBJ_UMOUNT);
 	generic_shutdown_super(sb);
 	sync_blockdev(bdev);
 	close_bdev_excl(bdev);

fs/sysfs/dir.c

···
 			}
 		}
 		if (error && (error != -EEXIST)) {
-			sysfs_put((*d)->d_fsdata);
+			struct sysfs_dirent *sd = (*d)->d_fsdata;
+			if (sd) {
+ 				list_del_init(&sd->s_sibling);
+				sysfs_put(sd);
+			}
 			d_drop(*d);
 		}
 		dput(*d);

include/linux/device.h

···
 	struct driver_attribute	* drv_attrs;
 
 	int		(*match)(struct device * dev, struct device_driver * drv);
-	int		(*hotplug) (struct device *dev, char **envp, 
-				    int num_envp, char *buffer, int buffer_size);
+	int		(*uevent)(struct device *dev, char **envp,
+				  int num_envp, char *buffer, int buffer_size);
 	int		(*suspend)(struct device * dev, pm_message_t state);
 	int		(*resume)(struct device * dev);
 };
···
 	struct class_attribute		* class_attrs;
 	struct class_device_attribute	* class_dev_attrs;
 
-	int	(*hotplug)(struct class_device *dev, char **envp, 
+	int	(*uevent)(struct class_device *dev, char **envp,
 			   int num_envp, char *buffer, int buffer_size);
 
 	void	(*release)(struct class_device *dev);
···
  * set, this will be called instead of the class specific release function.
  * Only use this if you want to override the default release function, like
  * when you are nesting class_device structures.
- * @hotplug: pointer to a hotplug function for this struct class_device.  If
- * set, this will be called instead of the class specific hotplug function.
- * Only use this if you want to override the default hotplug function, like
+ * @uevent: pointer to a uevent function for this struct class_device.  If
+ * set, this will be called instead of the class specific uevent function.
+ * Only use this if you want to override the default uevent function, like
  * when you are nesting class_device structures.
  */
 struct class_device {
···
 	struct class_device	*parent;	/* parent of this child device, if there is one */
 
 	void	(*release)(struct class_device *dev);
-	int	(*hotplug)(struct class_device *dev, char **envp,
+	int	(*uevent)(struct class_device *dev, char **envp,
 			   int num_envp, char *buffer, int buffer_size);
 	char	class_id[BUS_ID_SIZE];	/* unique to this class */
 };

include/linux/firmware.h

···
 int request_firmware(const struct firmware **fw, const char *name,
 		     struct device *device);
 int request_firmware_nowait(
-	struct module *module, int hotplug,
+	struct module *module, int uevent,
 	const char *name, struct device *device, void *context,
 	void (*cont)(const struct firmware *fw, void *context));
 

include/linux/input.h

···
 #include <linux/time.h>
 #include <linux/list.h>
 #include <linux/device.h>
+#include <linux/mod_devicetable.h>
 #else
 #include <sys/time.h>
 #include <sys/ioctl.h>
···
 #define KEY_FN_S		0x1e3
 #define KEY_FN_B		0x1e4
 
+/* We avoid low common keys in module aliases so they don't get huge. */
+#define KEY_MIN_INTERESTING	KEY_MUTE
 #define KEY_MAX			0x1ff
 
 /*
···
 
 #define FF_MAX		0x7f
 
+struct input_device_id {
+
+	kernel_ulong_t flags;
+
+	struct input_id id;
+
+	kernel_ulong_t evbit[EV_MAX/BITS_PER_LONG+1];
+	kernel_ulong_t keybit[KEY_MAX/BITS_PER_LONG+1];
+	kernel_ulong_t relbit[REL_MAX/BITS_PER_LONG+1];
+	kernel_ulong_t absbit[ABS_MAX/BITS_PER_LONG+1];
+	kernel_ulong_t mscbit[MSC_MAX/BITS_PER_LONG+1];
+	kernel_ulong_t ledbit[LED_MAX/BITS_PER_LONG+1];
+	kernel_ulong_t sndbit[SND_MAX/BITS_PER_LONG+1];
+	kernel_ulong_t ffbit[FF_MAX/BITS_PER_LONG+1];
+	kernel_ulong_t swbit[SW_MAX/BITS_PER_LONG+1];
+
+	kernel_ulong_t driver_info;
+};
+
+/*
+ * Structure for hotplug & device<->driver matching.
+ */
+
+#define INPUT_DEVICE_ID_MATCH_BUS	1
+#define INPUT_DEVICE_ID_MATCH_VENDOR	2
+#define INPUT_DEVICE_ID_MATCH_PRODUCT	4
+#define INPUT_DEVICE_ID_MATCH_VERSION	8
+
+#define INPUT_DEVICE_ID_MATCH_EVBIT	0x010
+#define INPUT_DEVICE_ID_MATCH_KEYBIT	0x020
+#define INPUT_DEVICE_ID_MATCH_RELBIT	0x040
+#define INPUT_DEVICE_ID_MATCH_ABSBIT	0x080
+#define INPUT_DEVICE_ID_MATCH_MSCIT	0x100
+#define INPUT_DEVICE_ID_MATCH_LEDBIT	0x200
+#define INPUT_DEVICE_ID_MATCH_SNDBIT	0x400
+#define INPUT_DEVICE_ID_MATCH_FFBIT	0x800
+#define INPUT_DEVICE_ID_MATCH_SWBIT	0x1000
+
 #ifdef __KERNEL__
 
 /*
···
 };
 #define to_input_dev(d) container_of(d, struct input_dev, cdev)
 
-/*
- * Structure for hotplug & device<->driver matching.
- */
-
-#define INPUT_DEVICE_ID_MATCH_BUS	1
-#define INPUT_DEVICE_ID_MATCH_VENDOR	2
-#define INPUT_DEVICE_ID_MATCH_PRODUCT	4
-#define INPUT_DEVICE_ID_MATCH_VERSION	8
-
-#define INPUT_DEVICE_ID_MATCH_EVBIT	0x010
-#define INPUT_DEVICE_ID_MATCH_KEYBIT	0x020
-#define INPUT_DEVICE_ID_MATCH_RELBIT	0x040
-#define INPUT_DEVICE_ID_MATCH_ABSBIT	0x080
-#define INPUT_DEVICE_ID_MATCH_MSCIT	0x100
-#define INPUT_DEVICE_ID_MATCH_LEDBIT	0x200
-#define INPUT_DEVICE_ID_MATCH_SNDBIT	0x400
-#define INPUT_DEVICE_ID_MATCH_FFBIT	0x800
-#define INPUT_DEVICE_ID_MATCH_SWBIT	0x1000
-
 #define INPUT_DEVICE_ID_MATCH_DEVICE\
 	(INPUT_DEVICE_ID_MATCH_BUS | INPUT_DEVICE_ID_MATCH_VENDOR | INPUT_DEVICE_ID_MATCH_PRODUCT)
 #define INPUT_DEVICE_ID_MATCH_DEVICE_AND_VERSION\
 	(INPUT_DEVICE_ID_MATCH_DEVICE | INPUT_DEVICE_ID_MATCH_VERSION)
-
-struct input_device_id {
-
-	unsigned long flags;
-
-	struct input_id id;
-
-	unsigned long evbit[NBITS(EV_MAX)];
-	unsigned long keybit[NBITS(KEY_MAX)];
-	unsigned long relbit[NBITS(REL_MAX)];
-	unsigned long absbit[NBITS(ABS_MAX)];
-	unsigned long mscbit[NBITS(MSC_MAX)];
-	unsigned long ledbit[NBITS(LED_MAX)];
-	unsigned long sndbit[NBITS(SND_MAX)];
-	unsigned long ffbit[NBITS(FF_MAX)];
-	unsigned long swbit[NBITS(SW_MAX)];
-
-	unsigned long driver_info;
-};
 
 struct input_handle;
 

include/linux/kobject.h

···
 #include <linux/spinlock.h>
 #include <linux/rwsem.h>
 #include <linux/kref.h>
-#include <linux/kobject_uevent.h>
 #include <linux/kernel.h>
 #include <asm/atomic.h>
 
-#define KOBJ_NAME_LEN	20
+#define KOBJ_NAME_LEN			20
+#define UEVENT_HELPER_PATH_LEN		256
 
-/* counter to tag the hotplug event, read only except for the kobject core */
-extern u64 hotplug_seqnum;
+/* path to the userspace helper executed on an event */
+extern char uevent_helper[];
+
+/* counter to tag the uevent, read only except for the kobject core */
+extern u64 uevent_seqnum;
+
+/* the actions here must match the proper string in lib/kobject_uevent.c */
+typedef int __bitwise kobject_action_t;
+enum kobject_action {
+	KOBJ_ADD	= (__force kobject_action_t) 0x01,	/* exclusive to core */
+	KOBJ_REMOVE	= (__force kobject_action_t) 0x02,	/* exclusive to core */
+	KOBJ_CHANGE	= (__force kobject_action_t) 0x03,	/* device state change */
+	KOBJ_OFFLINE	= (__force kobject_action_t) 0x04,	/* device offline */
+	KOBJ_ONLINE	= (__force kobject_action_t) 0x05,	/* device online */
+};
 
 struct kobject {
 	const char		* k_name;
···
  *	of object; multiple ksets can belong to one subsystem. All 
  *	ksets of a subsystem share the subsystem's lock.
  *
- *      Each kset can support hotplugging; if it does, it will be given
- *      the opportunity to filter out specific kobjects from being
- *      reported, as well as to add its own "data" elements to the
- *      environment being passed to the hotplug helper.
+ *	Each kset can support specific event variables; it can
+ *	supress the event generation or add subsystem specific
+ *	variables carried with the event.
  */
-struct kset_hotplug_ops {
+struct kset_uevent_ops {
 	int (*filter)(struct kset *kset, struct kobject *kobj);
 	const char *(*name)(struct kset *kset, struct kobject *kobj);
-	int (*hotplug)(struct kset *kset, struct kobject *kobj, char **envp,
+	int (*uevent)(struct kset *kset, struct kobject *kobj, char **envp,
 			int num_envp, char *buffer, int buffer_size);
 };
 
···
 	struct list_head	list;
 	spinlock_t		list_lock;
 	struct kobject		kobj;
-	struct kset_hotplug_ops	* hotplug_ops;
+	struct kset_uevent_ops	* uevent_ops;
 };
 
 
···
 	struct rw_semaphore	rwsem;
 };
 
-#define decl_subsys(_name,_type,_hotplug_ops) \
+#define decl_subsys(_name,_type,_uevent_ops) \
 struct subsystem _name##_subsys = { \
 	.kset = { \
 		.kobj = { .name = __stringify(_name) }, \
 		.ktype = _type, \
-		.hotplug_ops =_hotplug_ops, \
+		.uevent_ops =_uevent_ops, \
 	} \
 }
-#define decl_subsys_name(_varname,_name,_type,_hotplug_ops) \
+#define decl_subsys_name(_varname,_name,_type,_uevent_ops) \
 struct subsystem _varname##_subsys = { \
 	.kset = { \
 		.kobj = { .name = __stringify(_name) }, \
 		.ktype = _type, \
-		.hotplug_ops =_hotplug_ops, \
+		.uevent_ops =_uevent_ops, \
 	} \
 }
 
···
 extern int subsys_create_file(struct subsystem * , struct subsys_attribute *);
 extern void subsys_remove_file(struct subsystem * , struct subsys_attribute *);
 
-#ifdef CONFIG_HOTPLUG
-void kobject_hotplug(struct kobject *kobj, enum kobject_action action);
-int add_hotplug_env_var(char **envp, int num_envp, int *cur_index,
+#if defined(CONFIG_HOTPLUG) & defined(CONFIG_NET)
+void kobject_uevent(struct kobject *kobj, enum kobject_action action);
+
+int add_uevent_var(char **envp, int num_envp, int *cur_index,
 			char *buffer, int buffer_size, int *cur_len,
 			const char *format, ...)
 	__attribute__((format (printf, 7, 8)));
 #else
-static inline void kobject_hotplug(struct kobject *kobj, enum kobject_action action) { }
-static inline int add_hotplug_env_var(char **envp, int num_envp, int *cur_index, 
+static inline void kobject_uevent(struct kobject *kobj, enum kobject_action action) { }
+
+static inline int add_uevent_var(char **envp, int num_envp, int *cur_index,
 				      char *buffer, int buffer_size, int *cur_len, 
 				      const char *format, ...)
 { return 0; }

include/linux/kobject_uevent.h

···
-/*
- * kobject_uevent.h - list of kobject user events that can be generated
- *
- * Copyright (C) 2004 IBM Corp.
- * Copyright (C) 2004 Greg Kroah-Hartman <[e-mail]>
- *
- * This file is released under the GPLv2.
- *
- */
-
-#ifndef _KOBJECT_EVENT_H_
-#define _KOBJECT_EVENT_H_
-
-#define HOTPLUG_PATH_LEN	256
-
-/* path to the hotplug userspace helper executed on an event */
-extern char hotplug_path[];
-
-/*
- * If you add an action here, you must also add the proper string to the
- * lib/kobject_uevent.c file.
- */
-typedef int __bitwise kobject_action_t;
-enum kobject_action {
-	KOBJ_ADD	= (__force kobject_action_t) 0x01,	/* add event, for hotplug */
-	KOBJ_REMOVE	= (__force kobject_action_t) 0x02,	/* remove event, for hotplug */
-	KOBJ_CHANGE	= (__force kobject_action_t) 0x03,	/* a sysfs attribute file has changed */
-	KOBJ_MOUNT	= (__force kobject_action_t) 0x04,	/* mount event for block devices */
-	KOBJ_UMOUNT	= (__force kobject_action_t) 0x05,	/* umount event for block devices */
-	KOBJ_OFFLINE	= (__force kobject_action_t) 0x06,	/* offline event for hotplug devices */
-	KOBJ_ONLINE	= (__force kobject_action_t) 0x07,	/* online event for hotplug devices */
-};
-
-
-#ifdef CONFIG_KOBJECT_UEVENT
-int kobject_uevent(struct kobject *kobj,
-		   enum kobject_action action,
-		   struct attribute *attr);
-int kobject_uevent_atomic(struct kobject *kobj,
-			  enum kobject_action action,
-			  struct attribute *attr);
-#else
-static inline int kobject_uevent(struct kobject *kobj,
-				 enum kobject_action action,
-				 struct attribute *attr)
-{
-	return 0;
-}
-static inline int kobject_uevent_atomic(struct kobject *kobj,
-				        enum kobject_action action,
-					struct attribute *attr)
-{
-	return 0;
-}
-#endif
-
-#endif

include/linux/platform_device.h

···
 extern int platform_device_add_resources(struct platform_device *pdev, struct resource *res, unsigned int num);
 extern int platform_device_add_data(struct platform_device *pdev, void *data, size_t size);
 extern int platform_device_add(struct platform_device *pdev);
+extern void platform_device_del(struct platform_device *pdev);
 extern void platform_device_put(struct platform_device *pdev);
 
 struct platform_driver {

include/linux/sysctl.h

···
 	KERN_OVERFLOWUID=46,	/* int: overflow UID */
 	KERN_OVERFLOWGID=47,	/* int: overflow GID */
 	KERN_SHMPATH=48,	/* string: path to shm fs */
-	KERN_HOTPLUG=49,	/* string: path to hotplug policy agent */
+	KERN_HOTPLUG=49,	/* string: path to uevent helper (deprecated) */
 	KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
 	KERN_S390_USER_DEBUG_LOGGING=51,  /* int: dumps of user faults */
 	KERN_CORE_USES_PID=52,		/* int: use core or core.%pid */

include/linux/usb.h

···
  * Device drivers should not attempt to activate configurations.  The choice
  * of which configuration to install is a policy decision based on such
  * considerations as available power, functionality provided, and the user's
- * desires (expressed through hotplug scripts).  However, drivers can call
+ * desires (expressed through userspace tools).  However, drivers can call
  * usb_reset_configuration() to reinitialize the current configuration and
  * all its interfaces.
  */

init/Kconfig

···
 	  can be used independently or with another kernel subsystem,
 	  such as SELinux.
 
-config HOTPLUG
-	bool "Support for hot-pluggable devices" if !ARCH_S390
-	default ARCH_S390
-	help
-	  This option is provided for the case where no in-kernel-tree
-	  modules require HOTPLUG functionality, but a module built
-	  outside the kernel tree does. Such modules require Y here.
-
-config KOBJECT_UEVENT
-	bool "Kernel Userspace Events" if EMBEDDED
-	depends on NET
-	default y
-	help
-	  This option enables the kernel userspace event layer, which is a
-	  simple mechanism for kernel-to-user communication over a netlink
-	  socket.
-	  The goal of the kernel userspace events layer is to provide a simple
-	  and efficient events system, that notifies userspace about kobject
-	  state changes. This will enable applications to just listen for
-	  events instead of polling system devices and files.
-	  Hotplug events (kobject addition and removal) are also available on
-	  the netlink socket in addition to the execution of /sbin/hotplug if
-	  CONFIG_HOTPLUG is enabled.
-
-	  Say Y, unless you are building a system requiring minimal memory
-	  consumption.
-
 config IKCONFIG
 	bool "Kernel .config support"
 	---help---
···
 	   reported.  KALLSYMS_EXTRA_PASS is only a temporary workaround while
 	   you wait for kallsyms to be fixed.
 
+
+config HOTPLUG
+	bool "Support for hot-pluggable devices" if EMBEDDED
+	default y
+	help
+	  This option is provided for the case where no hotplug or uevent
+	  capabilities is wanted by the kernel.  You should only consider
+	  disabling this option for embedded systems that do not use modules, a
+	  dynamic /dev tree, or dynamic device discovery.  Just say Y.
 
 config PRINTK
 	default y

kernel/ksysfs.c

···
 #include <linux/module.h>
 #include <linux/init.h>
 
+u64 uevent_seqnum;
+char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
+
 #define KERNEL_ATTR_RO(_name) \
 static struct subsys_attribute _name##_attr = __ATTR_RO(_name)
 
···
 	__ATTR(_name, 0644, _name##_show, _name##_store)
 
 #ifdef CONFIG_HOTPLUG
-static ssize_t hotplug_seqnum_show(struct subsystem *subsys, char *page)
+/* current uevent sequence number */
+static ssize_t uevent_seqnum_show(struct subsystem *subsys, char *page)
 {
-	return sprintf(page, "%llu\n", (unsigned long long)hotplug_seqnum);
+	return sprintf(page, "%llu\n", (unsigned long long)uevent_seqnum);
 }
-KERNEL_ATTR_RO(hotplug_seqnum);
+KERNEL_ATTR_RO(uevent_seqnum);
+
+/* uevent helper program, used during early boo */
+static ssize_t uevent_helper_show(struct subsystem *subsys, char *page)
+{
+	return sprintf(page, "%s\n", uevent_helper);
+}
+static ssize_t uevent_helper_store(struct subsystem *subsys, const char *page, size_t count)
+{
+	if (count+1 > UEVENT_HELPER_PATH_LEN)
+		return -ENOENT;
+	memcpy(uevent_helper, page, count);
+	uevent_helper[count] = '\0';
+	if (count && uevent_helper[count-1] == '\n')
+		uevent_helper[count-1] = '\0';
+	return count;
+}
+KERNEL_ATTR_RW(uevent_helper);
 #endif
 
 #ifdef CONFIG_KEXEC
···
 
 static struct attribute * kernel_attrs[] = {
 #ifdef CONFIG_HOTPLUG
-	&hotplug_seqnum_attr.attr,
+	&uevent_seqnum_attr.attr,
+	&uevent_helper_attr.attr,
 #endif
 #ifdef CONFIG_KEXEC
 	&crash_notes_attr.attr,

kernel/sysctl.c

···
 #include <linux/smp_lock.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/kobject.h>
 #include <linux/net.h>
 #include <linux/sysrq.h>
 #include <linux/highuid.h>
···
 
 #ifdef CONFIG_KMOD
 extern char modprobe_path[];
-#endif
-#ifdef CONFIG_HOTPLUG
-extern char hotplug_path[];
 #endif
 #ifdef CONFIG_CHR_DEV_SG
 extern int sg_big_buff;
···
 	{
 		.ctl_name	= KERN_HOTPLUG,
 		.procname	= "hotplug",
-		.data		= &hotplug_path,
-		.maxlen		= HOTPLUG_PATH_LEN,
+		.data		= &uevent_helper,
+		.maxlen		= UEVENT_HELPER_PATH_LEN,
 		.mode		= 0644,
 		.proc_handler	= &proc_dostring,
 		.strategy	= &sysctl_string,

lib/klist.c

···
 	i->i_klist = k;
 	i->i_head = &k->k_list;
 	i->i_cur = n;
+	if (n)
+		kref_get(&n->n_ref);
 }
 
 EXPORT_SYMBOL_GPL(klist_iter_init_node);

lib/kobject.c

···
 			       kobject_name(kobj),error);
 			dump_stack();
 		} else
-			kobject_hotplug(kobj, KOBJ_ADD);
+			kobject_uevent(kobj, KOBJ_ADD);
 	} else
 		error = -EINVAL;
 	return error;
···
 void kobject_unregister(struct kobject * kobj)
 {
 	pr_debug("kobject %s: unregistering\n",kobject_name(kobj));
-	kobject_hotplug(kobj, KOBJ_REMOVE);
+	kobject_uevent(kobj, KOBJ_REMOVE);
 	kobject_del(kobj);
 	kobject_put(kobj);
 }

lib/kobject_uevent.c

···
 #include <linux/skbuff.h>
 #include <linux/netlink.h>
 #include <linux/string.h>
-#include <linux/kobject_uevent.h>
 #include <linux/kobject.h>
 #include <net/sock.h>
 
-#define BUFFER_SIZE	1024	/* buffer for the hotplug env */
+#define BUFFER_SIZE	1024	/* buffer for the variables */
 #define NUM_ENVP	32	/* number of env pointers */
 
-#if defined(CONFIG_KOBJECT_UEVENT) || defined(CONFIG_HOTPLUG)
+#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
+static DEFINE_SPINLOCK(sequence_lock);
+static struct sock *uevent_sock;
+
 static char *action_to_string(enum kobject_action action)
 {
 	switch (action) {
···
 		return "remove";
 	case KOBJ_CHANGE:
 		return "change";
-	case KOBJ_MOUNT:
-		return "mount";
-	case KOBJ_UMOUNT:
-		return "umount";
 	case KOBJ_OFFLINE:
 		return "offline";
 	case KOBJ_ONLINE:
···
 		return NULL;
 	}
 }
-#endif
-
-#ifdef CONFIG_KOBJECT_UEVENT
-static struct sock *uevent_sock;
 
 /**
- * send_uevent - notify userspace by sending event through netlink socket
+ * kobject_uevent - notify userspace by ending an uevent
  *
- * @signal: signal name
- * @obj: object path (kobject)
- * @envp: possible hotplug environment to pass with the message
- * @gfp_mask:
- */
-static int send_uevent(const char *signal, const char *obj,
-		       char **envp, gfp_t gfp_mask)
-{
-	struct sk_buff *skb;
-	char *pos;
-	int len;
-
-	if (!uevent_sock)
-		return -EIO;
-
-	len = strlen(signal) + 1;
-	len += strlen(obj) + 1;
-
-	/* allocate buffer with the maximum possible message size */
-	skb = alloc_skb(len + BUFFER_SIZE, gfp_mask);
-	if (!skb)
-		return -ENOMEM;
-
-	pos = skb_put(skb, len);
-	sprintf(pos, "%s@%s", signal, obj);
-
-	/* copy the environment key by key to our continuous buffer */
-	if (envp) {
-		int i;
-
-		for (i = 2; envp[i]; i++) {
-			len = strlen(envp[i]) + 1;
-			pos = skb_put(skb, len);
-			strcpy(pos, envp[i]);
-		}
-	}
-
-	NETLINK_CB(skb).dst_group = 1;
-	return netlink_broadcast(uevent_sock, skb, 0, 1, gfp_mask);
-}
-
-static int do_kobject_uevent(struct kobject *kobj, enum kobject_action action, 
-			     struct attribute *attr, gfp_t gfp_mask)
-{
-	char *path;
-	char *attrpath;
-	char *signal;
-	int len;
-	int rc = -ENOMEM;
-
-	path = kobject_get_path(kobj, gfp_mask);
-	if (!path)
-		return -ENOMEM;
-
-	signal = action_to_string(action);
-	if (!signal)
-		return -EINVAL;
-
-	if (attr) {
-		len = strlen(path);
-		len += strlen(attr->name) + 2;
-		attrpath = kmalloc(len, gfp_mask);
-		if (!attrpath)
-			goto exit;
-		sprintf(attrpath, "%s/%s", path, attr->name);
-		rc = send_uevent(signal, attrpath, NULL, gfp_mask);
-		kfree(attrpath);
-	} else
-		rc = send_uevent(signal, path, NULL, gfp_mask);
-
-exit:
-	kfree(path);
-	return rc;
-}
-
-/**
- * kobject_uevent - notify userspace by sending event through netlink socket
- * 
- * @signal: signal name
- * @kobj: struct kobject that the event is happening to
- * @attr: optional struct attribute the event belongs to
- */
-int kobject_uevent(struct kobject *kobj, enum kobject_action action,
-		   struct attribute *attr)
-{
-	return do_kobject_uevent(kobj, action, attr, GFP_KERNEL);
-}
-EXPORT_SYMBOL_GPL(kobject_uevent);
-
-int kobject_uevent_atomic(struct kobject *kobj, enum kobject_action action,
-			  struct attribute *attr)
-{
-	return do_kobject_uevent(kobj, action, attr, GFP_ATOMIC);
-}
-EXPORT_SYMBOL_GPL(kobject_uevent_atomic);
-
-static int __init kobject_uevent_init(void)
-{
-	uevent_sock = netlink_kernel_create(NETLINK_KOBJECT_UEVENT, 1, NULL,
-					    THIS_MODULE);
-
-	if (!uevent_sock) {
-		printk(KERN_ERR
-		       "kobject_uevent: unable to create netlink socket!\n");
-		return -ENODEV;
-	}
-
-	return 0;
-}
-
-postcore_initcall(kobject_uevent_init);
-
-#else
-static inline int send_uevent(const char *signal, const char *obj,
-			      char **envp, int gfp_mask)
-{
-	return 0;
-}
-
-#endif /* CONFIG_KOBJECT_UEVENT */
-
-
-#ifdef CONFIG_HOTPLUG
-char hotplug_path[HOTPLUG_PATH_LEN] = "/sbin/hotplug";
-u64 hotplug_seqnum;
-static DEFINE_SPINLOCK(sequence_lock);
-
-/**
- * kobject_hotplug - notify userspace by executing /sbin/hotplug
- *
- * @action: action that is happening (usually "ADD" or "REMOVE")
+ * @action: action that is happening (usually KOBJ_ADD and KOBJ_REMOVE)
  * @kobj: struct kobject that the action is happening to
  */
-void kobject_hotplug(struct kobject *kobj, enum kobject_action action)
+void kobject_uevent(struct kobject *kobj, enum kobject_action action)
 {
-	char *argv [3];
-	char **envp = NULL;
-	char *buffer = NULL;
-	char *seq_buff;
+	char **envp;
+	char *buffer;
 	char *scratch;
+	const char *action_string;
+	const char *devpath = NULL;
+	const char *subsystem;
+	struct kobject *top_kobj;
+	struct kset *kset;
+	struct kset_uevent_ops *uevent_ops;
+	u64 seq;
+	char *seq_buff;
 	int i = 0;
 	int retval;
-	char *kobj_path = NULL;
-	const char *name = NULL;
-	char *action_string;
-	u64 seq;
-	struct kobject *top_kobj = kobj;
-	struct kset *kset;
-	static struct kset_hotplug_ops null_hotplug_ops;
-	struct kset_hotplug_ops *hotplug_ops = &null_hotplug_ops;
 
-	/* If this kobj does not belong to a kset,
-	   try to find a parent that does. */
-	if (!top_kobj->kset && top_kobj->parent) {
-		do {
-			top_kobj = top_kobj->parent;
-		} while (!top_kobj->kset && top_kobj->parent);
-	}
-
-	if (top_kobj->kset)
-		kset = top_kobj->kset;
-	else
-		return;
-
-	if (kset->hotplug_ops)
-		hotplug_ops = kset->hotplug_ops;
-
-	/* If the kset has a filter operation, call it.
-	   Skip the event, if the filter returns zero. */
-	if (hotplug_ops->filter) {
-		if (!hotplug_ops->filter(kset, kobj))
-			return;
-	}
-
-	pr_debug ("%s\n", __FUNCTION__);
+	pr_debug("%s\n", __FUNCTION__);
 
 	action_string = action_to_string(action);
 	if (!action_string)
 		return;
 
-	envp = kmalloc(NUM_ENVP * sizeof (char *), GFP_KERNEL);
+	/* search the kset we belong to */
+	top_kobj = kobj;
+	if (!top_kobj->kset && top_kobj->parent) {
+		do {
+			top_kobj = top_kobj->parent;
+		} while (!top_kobj->kset && top_kobj->parent);
+	}
+	if (!top_kobj->kset)
+		return;
+
+	kset = top_kobj->kset;
+	uevent_ops = kset->uevent_ops;
+
+	/*  skip the event, if the filter returns zero. */
+	if (uevent_ops && uevent_ops->filter)
+		if (!uevent_ops->filter(kset, kobj))
+			return;
+
+	/* environment index */
+	envp = kzalloc(NUM_ENVP * sizeof (char *), GFP_KERNEL);
 	if (!envp)
 		return;
-	memset (envp, 0x00, NUM_ENVP * sizeof (char *));
 
+	/* environment values */
 	buffer = kmalloc(BUFFER_SIZE, GFP_KERNEL);
 	if (!buffer)
 		goto exit;
 
-	if (hotplug_ops->name)
-		name = hotplug_ops->name(kset, kobj);
-	if (name == NULL)
-		name = kobject_name(&kset->kobj);
-
-	argv [0] = hotplug_path;
-	argv [1] = (char *)name; /* won't be changed but 'const' has to go */
-	argv [2] = NULL;
-
-	/* minimal command environment */
-	envp [i++] = "HOME=/";
-	envp [i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
-
-	scratch = buffer;
-
-	envp [i++] = scratch;
-	scratch += sprintf(scratch, "ACTION=%s", action_string) + 1;
-
-	kobj_path = kobject_get_path(kobj, GFP_KERNEL);
-	if (!kobj_path)
+	/* complete object path */
+	devpath = kobject_get_path(kobj, GFP_KERNEL);
+	if (!devpath)
 		goto exit;
 
-	envp [i++] = scratch;
-	scratch += sprintf (scratch, "DEVPATH=%s", kobj_path) + 1;
+	/* originating subsystem */
+	if (uevent_ops && uevent_ops->name)
+		subsystem = uevent_ops->name(kset, kobj);
+	else
+		subsystem = kobject_name(&kset->kobj);
 
-	envp [i++] = scratch;
-	scratch += sprintf(scratch, "SUBSYSTEM=%s", name) + 1;
+	/* event environemnt for helper process only */
+	envp[i++] = "HOME=/";
+	envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
 
-	/* reserve space for the sequence,
-	 * put the real one in after the hotplug call */
+	/* default keys */
+	scratch = buffer;
+	envp [i++] = scratch;
+	scratch += sprintf(scratch, "ACTION=%s", action_string) + 1;
+	envp [i++] = scratch;
+	scratch += sprintf (scratch, "DEVPATH=%s", devpath) + 1;
+	envp [i++] = scratch;
+	scratch += sprintf(scratch, "SUBSYSTEM=%s", subsystem) + 1;
+
+	/* just reserve the space, overwrite it after kset call has returned */
 	envp[i++] = seq_buff = scratch;
 	scratch += strlen("SEQNUM=18446744073709551616") + 1;
 
-	if (hotplug_ops->hotplug) {
-		/* have the kset specific function add its stuff */
-		retval = hotplug_ops->hotplug (kset, kobj,
+	/* let the kset specific function add its stuff */
+	if (uevent_ops && uevent_ops->uevent) {
+		retval = uevent_ops->uevent(kset, kobj,
 				  &envp[i], NUM_ENVP - i, scratch,
 				  BUFFER_SIZE - (scratch - buffer));
 		if (retval) {
-			pr_debug ("%s - hotplug() returned %d\n",
+			pr_debug ("%s - uevent() returned %d\n",
 				  __FUNCTION__, retval);
 			goto exit;
 		}
 	}
 
+	/* we will send an event, request a new sequence number */
 	spin_lock(&sequence_lock);
-	seq = ++hotplug_seqnum;
+	seq = ++uevent_seqnum;
 	spin_unlock(&sequence_lock);
 	sprintf(seq_buff, "SEQNUM=%llu", (unsigned long long)seq);
 
-	pr_debug ("%s: %s %s seq=%llu %s %s %s %s %s\n",
-		  __FUNCTION__, argv[0], argv[1], (unsigned long long)seq,
-		  envp[0], envp[1], envp[2], envp[3], envp[4]);
+	/* send netlink message */
+	if (uevent_sock) {
+		struct sk_buff *skb;
+		size_t len;
 
-	send_uevent(action_string, kobj_path, envp, GFP_KERNEL);
+		/* allocate message with the maximum possible size */
+		len = strlen(action_string) + strlen(devpath) + 2;
+		skb = alloc_skb(len + BUFFER_SIZE, GFP_KERNEL);
+		if (skb) {
+			/* add header */
+			scratch = skb_put(skb, len);
+			sprintf(scratch, "%s@%s", action_string, devpath);
 
-	if (!hotplug_path[0])
-		goto exit;
+			/* copy keys to our continuous event payload buffer */
+			for (i = 2; envp[i]; i++) {
+				len = strlen(envp[i]) + 1;
+				scratch = skb_put(skb, len);
+				strcpy(scratch, envp[i]);
+			}
 
-	retval = call_usermodehelper (argv[0], argv, envp, 0);
-	if (retval)
-		pr_debug ("%s - call_usermodehelper returned %d\n",
-			  __FUNCTION__, retval);
+			NETLINK_CB(skb).dst_group = 1;
+			netlink_broadcast(uevent_sock, skb, 0, 1, GFP_KERNEL);
+		}
+	}
+
+	/* call uevent_helper, usually only enabled during early boot */
+	if (uevent_helper[0]) {
+		char *argv [3];
+
+		argv [0] = uevent_helper;
+		argv [1] = (char *)subsystem;
+		argv [2] = NULL;
+		call_usermodehelper (argv[0], argv, envp, 0);
+	}
 
 exit:
-	kfree(kobj_path);
+	kfree(devpath);
 	kfree(buffer);
 	kfree(envp);
 	return;
 }
-EXPORT_SYMBOL(kobject_hotplug);
+EXPORT_SYMBOL_GPL(kobject_uevent);
 
 /**
- * add_hotplug_env_var - helper for creating hotplug environment variables
+ * add_uevent_var - helper for creating event variables
  * @envp: Pointer to table of environment variables, as passed into
- * hotplug() method.
+ * uevent() method.
  * @num_envp: Number of environment variable slots available, as
- * passed into hotplug() method.
+ * passed into uevent() method.
  * @cur_index: Pointer to current index into @envp.  It should be
- * initialized to 0 before the first call to add_hotplug_env_var(),
+ * initialized to 0 before the first call to add_uevent_var(),
  * and will be incremented on success.
  * @buffer: Pointer to buffer for environment variables, as passed
- * into hotplug() method.
- * @buffer_size: Length of @buffer, as passed into hotplug() method.
+ * into uevent() method.
+ * @buffer_size: Length of @buffer, as passed into uevent() method.
  * @cur_len: Pointer to current length of space used in @buffer.
  * Should be initialized to 0 before the first call to
- * add_hotplug_env_var(), and will be incremented on success.
+ * add_uevent_var(), and will be incremented on success.
  * @format: Format for creating environment variable (of the form
  * "XXX=%x") for snprintf().
  *
  * Returns 0 if environment variable was added successfully or -ENOMEM
  * if no space was available.
  */
-int add_hotplug_env_var(char **envp, int num_envp, int *cur_index,
-			char *buffer, int buffer_size, int *cur_len,
-			const char *format, ...)
+int add_uevent_var(char **envp, int num_envp, int *cur_index,
+		   char *buffer, int buffer_size, int *cur_len,
+		   const char *format, ...)
 {
 	va_list args;
 
 	/*
 	 * We check against num_envp - 1 to make sure there is at
-	 * least one slot left after we return, since the hotplug
-	 * method needs to set the last slot to NULL.
+	 * least one slot left after we return, since kobject_uevent()
+	 * needs to set the last slot to NULL.
 	 */
 	if (*cur_index >= num_envp - 1)
 		return -ENOMEM;
···
 	(*cur_index)++;
 	return 0;
 }
-EXPORT_SYMBOL(add_hotplug_env_var);
+EXPORT_SYMBOL_GPL(add_uevent_var);
+
+static int __init kobject_uevent_init(void)
+{
+	uevent_sock = netlink_kernel_create(NETLINK_KOBJECT_UEVENT, 1, NULL,
+					    THIS_MODULE);
+
+	if (!uevent_sock) {
+		printk(KERN_ERR
+		       "kobject_uevent: unable to create netlink socket!\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+postcore_initcall(kobject_uevent_init);
 
 #endif /* CONFIG_HOTPLUG */

net/bluetooth/hci_sysfs.c

···
 };
 
 #ifdef CONFIG_HOTPLUG
-static int bt_hotplug(struct class_device *cdev, char **envp, int num_envp, char *buf, int size)
+static int bt_uevent(struct class_device *cdev, char **envp, int num_envp, char *buf, int size)
 {
 	struct hci_dev *hdev = class_get_devdata(cdev);
 	int n, i = 0;
···
 	.name		= "bluetooth",
 	.release	= bt_release,
 #ifdef CONFIG_HOTPLUG
-	.hotplug	= bt_hotplug,
+	.uevent		= bt_uevent,
 #endif
 };
 

net/bridge/br_sysfs_if.c

···
 	if (err)
 		goto out2;
 
-	kobject_hotplug(&p->kobj, KOBJ_ADD);
+	kobject_uevent(&p->kobj, KOBJ_ADD);
 	return 0;
  out2:
 	kobject_del(&p->kobj);
···
 {
 	pr_debug("br_sysfs_removeif\n");
 	sysfs_remove_link(&p->br->ifobj, p->dev->name);
-	kobject_hotplug(&p->kobj, KOBJ_REMOVE);
+	kobject_uevent(&p->kobj, KOBJ_REMOVE);
 	kobject_del(&p->kobj);
 }
 

net/core/net-sysfs.c

···
 	return ret;
 }
 
-/* generate a read-only network device class attribute */
-#define NETDEVICE_ATTR(field, format_string)				\
-NETDEVICE_SHOW(field, format_string)					\
-static CLASS_DEVICE_ATTR(field, S_IRUGO, show_##field, NULL)		\
-
-NETDEVICE_ATTR(addr_len, fmt_dec);
-NETDEVICE_ATTR(iflink, fmt_dec);
-NETDEVICE_ATTR(ifindex, fmt_dec);
-NETDEVICE_ATTR(features, fmt_long_hex);
-NETDEVICE_ATTR(type, fmt_dec);
+NETDEVICE_SHOW(addr_len, fmt_dec);
+NETDEVICE_SHOW(iflink, fmt_dec);
+NETDEVICE_SHOW(ifindex, fmt_dec);
+NETDEVICE_SHOW(features, fmt_long_hex);
+NETDEVICE_SHOW(type, fmt_dec);
 
 /* use same locking rules as GIFHWADDR ioctl's */
 static ssize_t format_addr(char *buf, const unsigned char *addr, int len)
···
 	return -EINVAL;
 }
 
-static CLASS_DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
-static CLASS_DEVICE_ATTR(broadcast, S_IRUGO, show_broadcast, NULL);
-static CLASS_DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
-
 /* read-write attributes */
 NETDEVICE_SHOW(mtu, fmt_dec);
 
···
 	return netdev_store(dev, buf, len, change_mtu);
 }
 
-static CLASS_DEVICE_ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu);
-
 NETDEVICE_SHOW(flags, fmt_hex);
 
 static int change_flags(struct net_device *net, unsigned long new_flags)
···
 {
 	return netdev_store(dev, buf, len, change_flags);
 }
-
-static CLASS_DEVICE_ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags);
 
 NETDEVICE_SHOW(tx_queue_len, fmt_ulong);
 
···
 	return netdev_store(dev, buf, len, change_tx_queue_len);
 }
 
-static CLASS_DEVICE_ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len, 
-			 store_tx_queue_len);
-
 NETDEVICE_SHOW(weight, fmt_dec);
 
 static int change_weight(struct net_device *net, unsigned long new_weight)
···
 	return netdev_store(dev, buf, len, change_weight);
 }
 
-static CLASS_DEVICE_ATTR(weight, S_IRUGO | S_IWUSR, show_weight, 
-			 store_weight);
-
-
-static struct class_device_attribute *net_class_attributes[] = {
-	&class_device_attr_ifindex,
-	&class_device_attr_iflink,
-	&class_device_attr_addr_len,
-	&class_device_attr_tx_queue_len,
-	&class_device_attr_features,
-	&class_device_attr_mtu,
-	&class_device_attr_flags,
-	&class_device_attr_weight,
-	&class_device_attr_type,
-	&class_device_attr_address,
-	&class_device_attr_broadcast,
-	&class_device_attr_carrier,
-	NULL
+static struct class_device_attribute net_class_attributes[] = {
+	__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
+	__ATTR(iflink, S_IRUGO, show_iflink, NULL),
+	__ATTR(ifindex, S_IRUGO, show_ifindex, NULL),
+	__ATTR(features, S_IRUGO, show_features, NULL),
+	__ATTR(type, S_IRUGO, show_type, NULL),
+	__ATTR(address, S_IRUGO, show_address, NULL),
+	__ATTR(broadcast, S_IRUGO, show_broadcast, NULL),
+	__ATTR(carrier, S_IRUGO, show_carrier, NULL),
+	__ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu),
+	__ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags),
+	__ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len,
+	       store_tx_queue_len),
+	__ATTR(weight, S_IRUGO | S_IWUSR, show_weight, store_weight),
+	{}
 };
 
 /* Show a given an attribute in the statistics group */
···
 #endif
 
 #ifdef CONFIG_HOTPLUG
-static int netdev_hotplug(struct class_device *cd, char **envp,
-			  int num_envp, char *buf, int size)
+static int netdev_uevent(struct class_device *cd, char **envp,
+			 int num_envp, char *buf, int size)
 {
 	struct net_device *dev = to_net_dev(cd);
 	int i = 0;
 	int n;
 
-	/* pass interface in env to hotplug. */
+	/* pass interface to uevent. */
 	envp[i++] = buf;
 	n = snprintf(buf, size, "INTERFACE=%s", dev->name) + 1;
 	buf += n;
···
 static struct class net_class = {
 	.name = "net",
 	.release = netdev_release,
+	.class_dev_attrs = net_class_attributes,
 #ifdef CONFIG_HOTPLUG
-	.hotplug = netdev_hotplug,
+	.uevent = netdev_uevent,
 #endif
 };
 
···
 int netdev_register_sysfs(struct net_device *net)
 {
 	struct class_device *class_dev = &(net->class_dev);
-	int i;
-	struct class_device_attribute *attr;
 	int ret;
 
 	class_dev->class = &net_class;
···
 	strlcpy(class_dev->class_id, net->name, BUS_ID_SIZE);
 	if ((ret = class_device_register(class_dev)))
 		goto out;
-
-	for (i = 0; (attr = net_class_attributes[i]) != NULL; i++) {
-		if ((ret = class_device_create_file(class_dev, attr)))
-		    goto out_unreg;
-	}
-
 
 	if (net->get_stats &&
 	    (ret = sysfs_create_group(&class_dev->kobj, &netstat_group)))

scripts/mod/file2alias.c

···
  * use either stdint.h or inttypes.h for the rest. */
 #if KERNEL_ELFCLASS == ELFCLASS32
 typedef Elf32_Addr	kernel_ulong_t;
+#define BITS_PER_LONG 32
 #else
 typedef Elf64_Addr	kernel_ulong_t;
+#define BITS_PER_LONG 64
 #endif
 #ifdef __sun__
 #include <inttypes.h>
···
  * even potentially has different endianness and word sizes, since 
  * we handle those differences explicitly below */
 #include "../../include/linux/mod_devicetable.h"
+#include "../../include/linux/input.h"
 
 #define ADD(str, sep, cond, field)                              \
 do {                                                            \
···
 	return 1;
 }
 
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+static void do_input(char *alias,
+		     kernel_ulong_t *arr, unsigned int min, unsigned int max)
+{
+	unsigned int i;
+	for (i = min; i < max; i++) {
+		if (arr[i/BITS_PER_LONG] & (1 << (i%BITS_PER_LONG)))
+			sprintf(alias+strlen(alias), "%X,*", i);
+	}
+}
+
+/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
+static int do_input_entry(const char *filename, struct input_device_id *id,
+			  char *alias)
+{
+	sprintf(alias, "input:");
+
+	ADD(alias, "b", id->flags&INPUT_DEVICE_ID_MATCH_BUS, id->id.bustype);
+	ADD(alias, "v", id->flags&INPUT_DEVICE_ID_MATCH_VENDOR, id->id.vendor);
+	ADD(alias, "p", id->flags&INPUT_DEVICE_ID_MATCH_PRODUCT,
+	    id->id.product);
+	ADD(alias, "e", id->flags&INPUT_DEVICE_ID_MATCH_VERSION,
+	    id->id.version);
+
+	sprintf(alias + strlen(alias), "-e*");
+	if (id->flags&INPUT_DEVICE_ID_MATCH_EVBIT)
+		do_input(alias, id->evbit, 0, EV_MAX);
+	sprintf(alias + strlen(alias), "k*");
+	if (id->flags&INPUT_DEVICE_ID_MATCH_KEYBIT)
+		do_input(alias, id->keybit, KEY_MIN_INTERESTING, KEY_MAX);
+	sprintf(alias + strlen(alias), "r*");
+	if (id->flags&INPUT_DEVICE_ID_MATCH_RELBIT)
+		do_input(alias, id->relbit, 0, REL_MAX);
+	sprintf(alias + strlen(alias), "a*");
+	if (id->flags&INPUT_DEVICE_ID_MATCH_ABSBIT)
+		do_input(alias, id->absbit, 0, ABS_MAX);
+	sprintf(alias + strlen(alias), "m*");
+	if (id->flags&INPUT_DEVICE_ID_MATCH_MSCIT)
+		do_input(alias, id->mscbit, 0, MSC_MAX);
+	sprintf(alias + strlen(alias), "l*");
+	if (id->flags&INPUT_DEVICE_ID_MATCH_LEDBIT)
+		do_input(alias, id->ledbit, 0, LED_MAX);
+	sprintf(alias + strlen(alias), "s*");
+	if (id->flags&INPUT_DEVICE_ID_MATCH_SNDBIT)
+		do_input(alias, id->sndbit, 0, SND_MAX);
+	sprintf(alias + strlen(alias), "f*");
+	if (id->flags&INPUT_DEVICE_ID_MATCH_FFBIT)
+		do_input(alias, id->ffbit, 0, SND_MAX);
+	sprintf(alias + strlen(alias), "w*");
+	if (id->flags&INPUT_DEVICE_ID_MATCH_SWBIT)
+		do_input(alias, id->swbit, 0, SW_MAX);
+	return 1;
+}
+
 /* Ignore any prefix, eg. v850 prepends _ */
 static inline int sym_is(const char *symbol, const char *name)
 {
···
 	else if (sym_is(symname, "__mod_i2c_device_table"))
 		do_table(symval, sym->st_size, sizeof(struct i2c_device_id),
 			 do_i2c_entry, mod);
-
+	else if (sym_is(symname, "__mod_input_device_table"))
+		do_table(symval, sym->st_size, sizeof(struct input_device_id),
+			 do_input_entry, mod);
 }
 
 /* Now add out buffered information to the generated C source */