+}
+
+static int device_add_class_symlinks(struct device *dev)
+{
+ int error;
+
+ if (!dev->class)
+ return 0;
+
+ error = sysfs_create_link(&dev->kobj,
+ &dev->class->p->class_subsys.kobj,
+ "subsystem");
+ if (error)
+ goto out;
+
+#ifdef CONFIG_SYSFS_DEPRECATED
+ /* stacked class devices need a symlink in the class directory */
+ if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
+ device_is_not_partition(dev)) {
+ error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
+ &dev->kobj, dev->bus_id);
+ if (error)
+ goto out_subsys;
+ }
+
+ if (dev->parent && device_is_not_partition(dev)) {
+ struct device *parent = dev->parent;
+ char *class_name;
+
+ /*
+ * stacked class devices have the 'device' link
+ * pointing to the bus device instead of the parent
+ */
+ while (parent->class && !parent->bus && parent->parent)
+ parent = parent->parent;
+
+ error = sysfs_create_link(&dev->kobj,
+ &parent->kobj,
+ "device");
+ if (error)
+ goto out_busid;
+
+ class_name = make_class_name(dev->class->name,
+ &dev->kobj);
+ if (class_name)
+ error = sysfs_create_link(&dev->parent->kobj,
+ &dev->kobj, class_name);
+ kfree(class_name);
+ if (error)
+ goto out_device;
+ }
+ return 0;
+
+out_device:
+ if (dev->parent && device_is_not_partition(dev))
+ sysfs_remove_link(&dev->kobj, "device");
+out_busid:
+ if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
+ device_is_not_partition(dev))
+ sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+ dev->bus_id);
+#else
+ /* link in the class directory pointing to the device */
+ error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
+ &dev->kobj, dev->bus_id);
+ if (error)
+ goto out_subsys;
+
+ if (dev->parent && device_is_not_partition(dev)) {
+ error = sysfs_create_link(&dev->kobj, &dev->parent->kobj,
+ "device");
+ if (error)
+ goto out_busid;
+ }
+ return 0;
+
+out_busid:
+ sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
+#endif
+
+out_subsys:
+ sysfs_remove_link(&dev->kobj, "subsystem");
+out:
+ return error;
+}
+
+static void device_remove_class_symlinks(struct device *dev)
+{
+ if (!dev->class)
+ return;
+
+#ifdef CONFIG_SYSFS_DEPRECATED
+ if (dev->parent && device_is_not_partition(dev)) {
+ char *class_name;
+
+ class_name = make_class_name(dev->class->name, &dev->kobj);
+ if (class_name) {
+ sysfs_remove_link(&dev->parent->kobj, class_name);
+ kfree(class_name);
+ }
+ sysfs_remove_link(&dev->kobj, "device");
+ }
+
+ if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
+ device_is_not_partition(dev))
+ sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+ dev->bus_id);
+#else
+ if (dev->parent && device_is_not_partition(dev))
+ sysfs_remove_link(&dev->kobj, "device");
+
+ sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
+#endif
+
+ sysfs_remove_link(&dev->kobj, "subsystem");
+}
+
+/**
+ * dev_set_name - set a device name
+ * @dev: device
+ * @fmt: format string for the device's name
+ */
+int dev_set_name(struct device *dev, const char *fmt, ...)
+{
+ va_list vargs;
+
+ va_start(vargs, fmt);
+ vsnprintf(dev->bus_id, sizeof(dev->bus_id), fmt, vargs);
+ va_end(vargs);