v4.19.13 snapshot.
diff --git a/include/linux/attribute_container.h b/include/linux/attribute_container.h
new file mode 100644
index 0000000..896c689
--- /dev/null
+++ b/include/linux/attribute_container.h
@@ -0,0 +1,72 @@
+/*
+ * attribute_container.h - a generic container for all classes
+ *
+ * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
+ *
+ * This file is licensed under GPLv2
+ */
+
+#ifndef _ATTRIBUTE_CONTAINER_H_
+#define _ATTRIBUTE_CONTAINER_H_
+
+#include <linux/list.h>
+#include <linux/klist.h>
+
+struct device;
+
+struct attribute_container {
+ struct list_head node;
+ struct klist containers;
+ struct class *class;
+ const struct attribute_group *grp;
+ struct device_attribute **attrs;
+ int (*match)(struct attribute_container *, struct device *);
+#define ATTRIBUTE_CONTAINER_NO_CLASSDEVS 0x01
+ unsigned long flags;
+};
+
+static inline int
+attribute_container_no_classdevs(struct attribute_container *atc)
+{
+ return atc->flags & ATTRIBUTE_CONTAINER_NO_CLASSDEVS;
+}
+
+static inline void
+attribute_container_set_no_classdevs(struct attribute_container *atc)
+{
+ atc->flags |= ATTRIBUTE_CONTAINER_NO_CLASSDEVS;
+}
+
+int attribute_container_register(struct attribute_container *cont);
+int __must_check attribute_container_unregister(struct attribute_container *cont);
+void attribute_container_create_device(struct device *dev,
+ int (*fn)(struct attribute_container *,
+ struct device *,
+ struct device *));
+void attribute_container_add_device(struct device *dev,
+ int (*fn)(struct attribute_container *,
+ struct device *,
+ struct device *));
+void attribute_container_remove_device(struct device *dev,
+ void (*fn)(struct attribute_container *,
+ struct device *,
+ struct device *));
+void attribute_container_device_trigger(struct device *dev,
+ int (*fn)(struct attribute_container *,
+ struct device *,
+ struct device *));
+void attribute_container_trigger(struct device *dev,
+ int (*fn)(struct attribute_container *,
+ struct device *));
+int attribute_container_add_attrs(struct device *classdev);
+int attribute_container_add_class_device(struct device *classdev);
+int attribute_container_add_class_device_adapter(struct attribute_container *cont,
+ struct device *dev,
+ struct device *classdev);
+void attribute_container_remove_attrs(struct device *classdev);
+void attribute_container_class_device_del(struct device *classdev);
+struct attribute_container *attribute_container_classdev_to_container(struct device *);
+struct device *attribute_container_find_class_device(struct attribute_container *, struct device *);
+struct device_attribute **attribute_container_classdev_to_attrs(const struct device *classdev);
+
+#endif