driver core: remove no longer used "struct class_device"

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 1 insertions, 648 deletions

diff --git a/drivers/base/base.h b/drivers/base/base.h
index c0444146c09a..2c9ae43e2219 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -64,17 +64,6 @@ extern void sysdev_shutdown(void);
 extern int sysdev_suspend(pm_message_t state);
 extern int sysdev_resume(void);
 
-static inline struct class_device *to_class_dev(struct kobject *obj)
-{
-        return container_of(obj, struct class_device, kobj);
-}
-
-static inline
-struct class_device_attribute *to_class_dev_attr(struct attribute *_attr)
-{
-        return container_of(_attr, struct class_device_attribute, attr);
-}
-
 extern char *make_class_name(const char *name, struct kobject *kobj);
 
 extern int devres_release_all(struct device *dev);
diff --git a/drivers/base/class.c b/drivers/base/class.c
index b4901799308b..0ef00e8d4153 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -179,27 +179,13 @@ static void class_create_release(struct class *cls)
         kfree(cls);
 }
 
-static void class_device_create_release(struct class_device *class_dev)
-{
-        pr_debug("%s called for %s\n", __func__, class_dev->class_id);
-        kfree(class_dev);
-}
-
-/* needed to allow these devices to have parent class devices */
-static int class_device_create_uevent(struct class_device *class_dev,
-                                      struct kobj_uevent_env *env)
-{
-        pr_debug("%s called for %s\n", __func__, class_dev->class_id);
-        return 0;
-}
-
 /**
  * class_create - create a struct class structure
  * @owner: pointer to the module that is to "own" this struct class
  * @name: pointer to a string for the name of this class.
  *
  * This is used to create a struct class pointer that can then be used
- * in calls to class_device_create().
+ * in calls to device_create().
  *
  * Note, the pointer created here is to be destroyed when finished by
  * making a call to class_destroy().
@@ -218,7 +204,6 @@ struct class *class_create(struct module *owner, const char *name)
         cls->name = name;
         cls->owner = owner;
         cls->class_release = class_create_release;
-        cls->release = class_device_create_release;
 
         retval = class_register(cls);
         if (retval)
@@ -246,113 +231,6 @@ void class_destroy(struct class *cls)
         class_unregister(cls);
 }
 
-/* Class Device Stuff */
-
-int class_device_create_file(struct class_device *class_dev,
-                             const struct class_device_attribute *attr)
-{
-        int error = -EINVAL;
-        if (class_dev)
-                error = sysfs_create_file(&class_dev->kobj, &attr->attr);
-        return error;
-}
-
-void class_device_remove_file(struct class_device *class_dev,
-                              const struct class_device_attribute *attr)
-{
-        if (class_dev)
-                sysfs_remove_file(&class_dev->kobj, &attr->attr);
-}
-
-int class_device_create_bin_file(struct class_device *class_dev,
-                                 struct bin_attribute *attr)
-{
-        int error = -EINVAL;
-        if (class_dev)
-                error = sysfs_create_bin_file(&class_dev->kobj, attr);
-        return error;
-}
-
-void class_device_remove_bin_file(struct class_device *class_dev,
-                                  struct bin_attribute *attr)
-{
-        if (class_dev)
-                sysfs_remove_bin_file(&class_dev->kobj, attr);
-}
-
-static ssize_t class_device_attr_show(struct kobject *kobj,
-                                      struct attribute *attr, char *buf)
-{
-        struct class_device_attribute *class_dev_attr = to_class_dev_attr(attr);
-        struct class_device *cd = to_class_dev(kobj);
-        ssize_t ret = 0;
-
-        if (class_dev_attr->show)
-                ret = class_dev_attr->show(cd, buf);
-        return ret;
-}
-
-static ssize_t class_device_attr_store(struct kobject *kobj,
-                                       struct attribute *attr,
-                                       const char *buf, size_t count)
-{
-        struct class_device_attribute *class_dev_attr = to_class_dev_attr(attr);
-        struct class_device *cd = to_class_dev(kobj);
-        ssize_t ret = 0;
-
-        if (class_dev_attr->store)
-                ret = class_dev_attr->store(cd, buf, count);
-        return ret;
-}
-
-static struct sysfs_ops class_dev_sysfs_ops = {
-        .show   = class_device_attr_show,
-        .store  = class_device_attr_store,
-};
-
-static void class_dev_release(struct kobject *kobj)
-{
-        struct class_device *cd = to_class_dev(kobj);
-        struct class *cls = cd->class;
-
-        pr_debug("device class '%s': release.\n", cd->class_id);
-
-        if (cd->release)
-                cd->release(cd);
-        else if (cls->release)
-                cls->release(cd);
-        else {
-                printk(KERN_ERR "Class Device '%s' does not have a release() "
-                        "function, it is broken and must be fixed.\n",
-                        cd->class_id);
-                WARN_ON(1);
-        }
-}
-
-static struct kobj_type class_device_ktype = {
-        .sysfs_ops      = &class_dev_sysfs_ops,
-        .release        = class_dev_release,
-};
-
-static int class_uevent_filter(struct kset *kset, struct kobject *kobj)
-{
-        struct kobj_type *ktype = get_ktype(kobj);
-
-        if (ktype == &class_device_ktype) {
-                struct class_device *class_dev = to_class_dev(kobj);
-                if (class_dev->class)
-                        return 1;
-        }
-        return 0;
-}
-
-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;
-}
-
 #ifdef CONFIG_SYSFS_DEPRECATED
 char *make_class_name(const char *name, struct kobject *kobj)
 {
@@ -370,445 +248,8 @@ char *make_class_name(const char *name, struct kobject *kobj)
         strcat(class_name, kobject_name(kobj));
         return class_name;
 }
-
-static int make_deprecated_class_device_links(struct class_device *class_dev)
-{
-        char *class_name;
-        int error;
-
-        if (!class_dev->dev)
-                return 0;
-
-        class_name = make_class_name(class_dev->class->name, &class_dev->kobj);
-        if (class_name)
-                error = sysfs_create_link(&class_dev->dev->kobj,
-                                          &class_dev->kobj, class_name);
-        else
-                error = -ENOMEM;
-        kfree(class_name);
-        return error;
-}
-
-static void remove_deprecated_class_device_links(struct class_device *class_dev)
-{
-        char *class_name;
-
-        if (!class_dev->dev)
-                return;
-
-        class_name = make_class_name(class_dev->class->name, &class_dev->kobj);
-        if (class_name)
-                sysfs_remove_link(&class_dev->dev->kobj, class_name);
-        kfree(class_name);
-}
-#else
-static inline int make_deprecated_class_device_links(struct class_device *cd)
-{ return 0; }
-static void remove_deprecated_class_device_links(struct class_device *cd)
-{ }
 #endif
 
-static int class_uevent(struct kset *kset, struct kobject *kobj,
-                        struct kobj_uevent_env *env)
-{
-        struct class_device *class_dev = to_class_dev(kobj);
-        struct device *dev = class_dev->dev;
-        int retval = 0;
-
-        pr_debug("%s - name = %s\n", __func__, class_dev->class_id);
-
-        if (MAJOR(class_dev->devt)) {
-                add_uevent_var(env, "MAJOR=%u", MAJOR(class_dev->devt));
-
-                add_uevent_var(env, "MINOR=%u", MINOR(class_dev->devt));
-        }
-
-        if (dev) {
-                const char *path = kobject_get_path(&dev->kobj, GFP_KERNEL);
-                if (path) {
-                        add_uevent_var(env, "PHYSDEVPATH=%s", path);
-                        kfree(path);
-                }
-
-                if (dev->bus)
-                        add_uevent_var(env, "PHYSDEVBUS=%s", dev->bus->name);
-
-                if (dev->driver)
-                        add_uevent_var(env, "PHYSDEVDRIVER=%s",
-                                       dev->driver->name);
-        }
-
-        if (class_dev->uevent) {
-                /* have the class device specific function add its stuff */
-                retval = class_dev->uevent(class_dev, env);
-                if (retval)
-                        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->uevent(class_dev, env);
-                if (retval)
-                        pr_debug("class->uevent() returned %d\n", retval);
-        }
-
-        return retval;
-}
-
-static struct kset_uevent_ops class_uevent_ops = {
-        .filter =       class_uevent_filter,
-        .name =         class_uevent_name,
-        .uevent =       class_uevent,
-};
-
-/*
- * DO NOT copy how this is created, kset_create_and_add() should be
- * called, but this is a hold-over from the old-way and will be deleted
- * entirely soon.
- */
-static struct kset class_obj_subsys = {
-        .uevent_ops = &class_uevent_ops,
-};
-
-static int class_device_add_attrs(struct class_device *cd)
-{
-        int i;
-        int error = 0;
-        struct class *cls = cd->class;
-
-        if (cls->class_dev_attrs) {
-                for (i = 0; attr_name(cls->class_dev_attrs[i]); i++) {
-                        error = class_device_create_file(cd,
-                                                &cls->class_dev_attrs[i]);
-                        if (error)
-                                goto err;
-                }
-        }
-done:
-        return error;
-err:
-        while (--i >= 0)
-                class_device_remove_file(cd, &cls->class_dev_attrs[i]);
-        goto done;
-}
-
-static void class_device_remove_attrs(struct class_device *cd)
-{
-        int i;
-        struct class *cls = cd->class;
-
-        if (cls->class_dev_attrs) {
-                for (i = 0; attr_name(cls->class_dev_attrs[i]); i++)
-                        class_device_remove_file(cd, &cls->class_dev_attrs[i]);
-        }
-}
-
-static int class_device_add_groups(struct class_device *cd)
-{
-        int i;
-        int error = 0;
-
-        if (cd->groups) {
-                for (i = 0; cd->groups[i]; i++) {
-                        error = sysfs_create_group(&cd->kobj, cd->groups[i]);
-                        if (error) {
-                                while (--i >= 0)
-                                        sysfs_remove_group(&cd->kobj,
-                                                           cd->groups[i]);
-                                goto out;
-                        }
-                }
-        }
-out:
-        return error;
-}
-
-static void class_device_remove_groups(struct class_device *cd)
-{
-        int i;
-        if (cd->groups)
-                for (i = 0; cd->groups[i]; i++)
-                        sysfs_remove_group(&cd->kobj, cd->groups[i]);
-}
-
-static ssize_t show_dev(struct class_device *class_dev, char *buf)
-{
-        return print_dev_t(buf, class_dev->devt);
-}
-
-static struct class_device_attribute class_devt_attr =
-        __ATTR(dev, S_IRUGO, show_dev, NULL);
-
-static ssize_t store_uevent(struct class_device *class_dev,
-                            const char *buf, size_t count)
-{
-        kobject_uevent(&class_dev->kobj, KOBJ_ADD);
-        return count;
-}
-
-static struct class_device_attribute class_uevent_attr =
-        __ATTR(uevent, S_IWUSR, NULL, store_uevent);
-
-void class_device_initialize(struct class_device *class_dev)
-{
-        class_dev->kobj.kset = &class_obj_subsys;
-        kobject_init(&class_dev->kobj, &class_device_ktype);
-        INIT_LIST_HEAD(&class_dev->node);
-}
-
-int class_device_add(struct class_device *class_dev)
-{
-        struct class *parent_class = NULL;
-        struct class_device *parent_class_dev = NULL;
-        struct class_interface *class_intf;
-        int error = -EINVAL;
-
-        class_dev = class_device_get(class_dev);
-        if (!class_dev)
-                return -EINVAL;
-
-        if (!strlen(class_dev->class_id))
-                goto out1;
-
-        parent_class = class_get(class_dev->class);
-        if (!parent_class)
-                goto out1;
-
-        parent_class_dev = class_device_get(class_dev->parent);
-
-        pr_debug("CLASS: registering class device: ID = '%s'\n",
-                 class_dev->class_id);
-
-        /* first, register with generic layer. */
-        if (parent_class_dev)
-                class_dev->kobj.parent = &parent_class_dev->kobj;
-        else
-                class_dev->kobj.parent = &parent_class->subsys.kobj;
-
-        error = kobject_add(&class_dev->kobj, class_dev->kobj.parent,
-                            "%s", class_dev->class_id);
-        if (error)
-                goto out2;
-
-        /* add the needed attributes to this device */
-        error = sysfs_create_link(&class_dev->kobj,
-                                  &parent_class->subsys.kobj, "subsystem");
-        if (error)
-                goto out3;
-
-        error = class_device_create_file(class_dev, &class_uevent_attr);
-        if (error)
-                goto out3;
-
-        if (MAJOR(class_dev->devt)) {
-                error = class_device_create_file(class_dev, &class_devt_attr);
-                if (error)
-                        goto out4;
-        }
-
-        error = class_device_add_attrs(class_dev);
-        if (error)
-                goto out5;
-
-        if (class_dev->dev) {
-                error = sysfs_create_link(&class_dev->kobj,
-                                          &class_dev->dev->kobj, "device");
-                if (error)
-                        goto out6;
-        }
-
-        error = class_device_add_groups(class_dev);
-        if (error)
-                goto out7;
-
-        error = make_deprecated_class_device_links(class_dev);
-        if (error)
-                goto out8;
-
-        kobject_uevent(&class_dev->kobj, KOBJ_ADD);
-
-        /* notify any interfaces this device is now here */
-        down(&parent_class->sem);
-        list_add_tail(&class_dev->node, &parent_class->children);
-        list_for_each_entry(class_intf, &parent_class->interfaces, node) {
-                if (class_intf->add)
-                        class_intf->add(class_dev, class_intf);
-        }
-        up(&parent_class->sem);
-
-        goto out1;
-
- out8:
-        class_device_remove_groups(class_dev);
- out7:
-        if (class_dev->dev)
-                sysfs_remove_link(&class_dev->kobj, "device");
- out6:
-        class_device_remove_attrs(class_dev);
- out5:
-        if (MAJOR(class_dev->devt))
-                class_device_remove_file(class_dev, &class_devt_attr);
- out4:
-        class_device_remove_file(class_dev, &class_uevent_attr);
- out3:
-        kobject_del(&class_dev->kobj);
- out2:
-        if (parent_class_dev)
-                class_device_put(parent_class_dev);
-        class_put(parent_class);
- out1:
-        class_device_put(class_dev);
-        return error;
-}
-
-int class_device_register(struct class_device *class_dev)
-{
-        class_device_initialize(class_dev);
-        return class_device_add(class_dev);
-}
-
-/**
- * class_device_create - creates a class device and registers it with sysfs
- * @cls: pointer to the struct class that this device should be registered to.
- * @parent: pointer to the parent struct class_device of this new device, if
- * any.
- * @devt: the dev_t for the char device to be added.
- * @device: a pointer to a struct device that is assiociated with this class
- * device.
- * @fmt: string for the class device's name
- *
- * This function can be used by char device classes.  A struct
- * class_device will be created in sysfs, registered to the specified
- * class.
- * A "dev" file will be created, showing the dev_t for the device, if
- * the dev_t is not 0,0.
- * If a pointer to a parent struct class_device is passed in, the newly
- * created struct class_device will be a child of that device in sysfs.
- * The pointer to the struct class_device will be returned from the
- * call.  Any further sysfs files that might be required can be created
- * using this pointer.
- *
- * Note: the struct class passed to this function must have previously
- * been created with a call to class_create().
- */
-struct class_device *class_device_create(struct class *cls,
-                                         struct class_device *parent,
-                                         dev_t devt,
-                                         struct device *device,
-                                         const char *fmt, ...)
-{
-        va_list args;
-        struct class_device *class_dev = NULL;
-        int retval = -ENODEV;
-
-        if (cls == NULL || IS_ERR(cls))
-                goto error;
-
-        class_dev = kzalloc(sizeof(*class_dev), GFP_KERNEL);
-        if (!class_dev) {
-                retval = -ENOMEM;
-                goto error;
-        }
-
-        class_dev->devt = devt;
-        class_dev->dev = device;
-        class_dev->class = cls;
-        class_dev->parent = parent;
-        class_dev->release = class_device_create_release;
-        class_dev->uevent = class_device_create_uevent;
-
-        va_start(args, fmt);
-        vsnprintf(class_dev->class_id, BUS_ID_SIZE, fmt, args);
-        va_end(args);
-        retval = class_device_register(class_dev);
-        if (retval)
-                goto error;
-
-        return class_dev;
-
-error:
-        kfree(class_dev);
-        return ERR_PTR(retval);
-}
-
-void class_device_del(struct class_device *class_dev)
-{
-        struct class *parent_class = class_dev->class;
-        struct class_device *parent_device = class_dev->parent;
-        struct class_interface *class_intf;
-
-        if (parent_class) {
-                down(&parent_class->sem);
-                list_del_init(&class_dev->node);
-                list_for_each_entry(class_intf, &parent_class->interfaces, node)
-                        if (class_intf->remove)
-                                class_intf->remove(class_dev, class_intf);
-                up(&parent_class->sem);
-        }
-
-        if (class_dev->dev) {
-                remove_deprecated_class_device_links(class_dev);
-                sysfs_remove_link(&class_dev->kobj, "device");
-        }
-        sysfs_remove_link(&class_dev->kobj, "subsystem");
-        class_device_remove_file(class_dev, &class_uevent_attr);
-        if (MAJOR(class_dev->devt))
-                class_device_remove_file(class_dev, &class_devt_attr);
-        class_device_remove_attrs(class_dev);
-        class_device_remove_groups(class_dev);
-
-        kobject_uevent(&class_dev->kobj, KOBJ_REMOVE);
-        kobject_del(&class_dev->kobj);
-
-        class_device_put(parent_device);
-        class_put(parent_class);
-}
-
-void class_device_unregister(struct class_device *class_dev)
-{
-        pr_debug("CLASS: Unregistering class device. ID = '%s'\n",
-                 class_dev->class_id);
-        class_device_del(class_dev);
-        class_device_put(class_dev);
-}
-
-/**
- * class_device_destroy - removes a class device that was created with class_device_create()
- * @cls: the pointer to the struct class that this device was registered * with.
- * @devt: the dev_t of the device that was previously registered.
- *
- * This call unregisters and cleans up a class device that was created with a
- * call to class_device_create()
- */
-void class_device_destroy(struct class *cls, dev_t devt)
-{
-        struct class_device *class_dev = NULL;
-        struct class_device *class_dev_tmp;
-
-        down(&cls->sem);
-        list_for_each_entry(class_dev_tmp, &cls->children, node) {
-                if (class_dev_tmp->devt == devt) {
-                        class_dev = class_dev_tmp;
-                        break;
-                }
-        }
-        up(&cls->sem);
-
-        if (class_dev)
-                class_device_unregister(class_dev);
-}
-
-struct class_device *class_device_get(struct class_device *class_dev)
-{
-        if (class_dev)
-                return to_class_dev(kobject_get(&class_dev->kobj));
-        return NULL;
-}
-
-void class_device_put(struct class_device *class_dev)
-{
-        if (class_dev)
-                kobject_put(&class_dev->kobj);
-}
-
 /**
  * class_for_each_device - device iterator
  * @class: the class we're iterating
@@ -897,56 +338,9 @@ struct device *class_find_device(struct class *class, void *data,
 }
 EXPORT_SYMBOL_GPL(class_find_device);
 
-/**
- * class_find_child - device iterator for locating a particular class_device
- * @class: the class we're iterating
- * @data: data for the match function
- * @match: function to check class_device
- *
- * This function returns a reference to a class_device that is 'found' for
- * later use, as determined by the @match callback.
- *
- * The callback should return 0 if the class_device doesn't match and non-zero
- * if it does.  If the callback returns non-zero, this function will
- * return to the caller and not iterate over any more class_devices.
- *
- * Note, you will need to drop the reference with class_device_put() after use.
- *
- * We hold class->sem in this function, so it can not be
- * re-acquired in @match, otherwise it will self-deadlocking. For
- * example, calls to add or remove class members would be verboten.
- */
-struct class_device *class_find_child(struct class *class, void *data,
-                                   int (*match)(struct class_device *, void *))
-{
-        struct class_device *dev;
-        int found = 0;
-
-        if (!class)
-                return NULL;
-
-        down(&class->sem);
-        list_for_each_entry(dev, &class->children, node) {
-                dev = class_device_get(dev);
-                if (dev) {
-                        if (match(dev, data)) {
-                                found = 1;
-                                break;
-                        } else
-                                class_device_put(dev);
-                } else
-                        break;
-        }
-        up(&class->sem);
-
-        return found ? dev : NULL;
-}
-EXPORT_SYMBOL_GPL(class_find_child);
-
 int class_interface_register(struct class_interface *class_intf)
 {
         struct class *parent;
-        struct class_device *class_dev;
         struct device *dev;
 
         if (!class_intf || !class_intf->class)
@@ -958,10 +352,6 @@ int class_interface_register(struct class_interface *class_intf)
 
         down(&parent->sem);
         list_add_tail(&class_intf->node, &parent->interfaces);
-        if (class_intf->add) {
-                list_for_each_entry(class_dev, &parent->children, node)
-                        class_intf->add(class_dev, class_intf);
-        }
         if (class_intf->add_dev) {
                 list_for_each_entry(dev, &parent->devices, node)
                         class_intf->add_dev(dev, class_intf);
@@ -974,7 +364,6 @@ int class_interface_register(struct class_interface *class_intf)
 void class_interface_unregister(struct class_interface *class_intf)
 {
         struct class *parent = class_intf->class;
-        struct class_device *class_dev;
         struct device *dev;
 
         if (!parent)
@@ -982,10 +371,6 @@ void class_interface_unregister(struct class_interface *class_intf)
 
         down(&parent->sem);
         list_del_init(&class_intf->node);
-        if (class_intf->remove) {
-                list_for_each_entry(class_dev, &parent->children, node)
-                        class_intf->remove(class_dev, class_intf);
-        }
         if (class_intf->remove_dev) {
                 list_for_each_entry(dev, &parent->devices, node)
                         class_intf->remove_dev(dev, class_intf);
@@ -1000,13 +385,6 @@ int __init classes_init(void)
         class_kset = kset_create_and_add("class", NULL, NULL);
         if (!class_kset)
                 return -ENOMEM;
-
-        /* ick, this is ugly, the things we go through to keep from showing up
-         * in sysfs... */
-        kset_init(&class_obj_subsys);
-        kobject_set_name(&class_obj_subsys.kobj, "class_obj");
-        if (!class_obj_subsys.kobj.parent)
-                class_obj_subsys.kobj.parent = &class_obj_subsys.kobj;
         return 0;
 }
 
@@ -1017,19 +395,5 @@ EXPORT_SYMBOL_GPL(class_unregister);
 EXPORT_SYMBOL_GPL(class_create);
 EXPORT_SYMBOL_GPL(class_destroy);
 
-EXPORT_SYMBOL_GPL(class_device_register);
-EXPORT_SYMBOL_GPL(class_device_unregister);
-EXPORT_SYMBOL_GPL(class_device_initialize);
-EXPORT_SYMBOL_GPL(class_device_add);
-EXPORT_SYMBOL_GPL(class_device_del);
-EXPORT_SYMBOL_GPL(class_device_get);
-EXPORT_SYMBOL_GPL(class_device_put);
-EXPORT_SYMBOL_GPL(class_device_create);
-EXPORT_SYMBOL_GPL(class_device_destroy);
-EXPORT_SYMBOL_GPL(class_device_create_file);
-EXPORT_SYMBOL_GPL(class_device_remove_file);
-EXPORT_SYMBOL_GPL(class_device_create_bin_file);
-EXPORT_SYMBOL_GPL(class_device_remove_bin_file);
-
 EXPORT_SYMBOL_GPL(class_interface_register);
 EXPORT_SYMBOL_GPL(class_interface_unregister);