1 files changed, 61 insertions, 0 deletions
diff --git a/c00.patch b/c00.patch
new file mode 100644
index 00000000000000..116d73d3265cf1
--- /dev/null
+++ b/c00.patch
@@ -0,0 +1,61 @@
+---
+ drivers/base/class.c   |   15 +++++++++++++++
+ include/linux/device.h |    2 ++
+ 2 files changed, 17 insertions(+)
+
+--- a/drivers/base/class.c
++++ b/drivers/base/class.c
+@@ -163,6 +163,18 @@ static void klist_class_dev_put(struct k
+ 	put_device(dev);
+ }
+ 
++static int class_add_groups(struct class *cls,
++			    const struct attribute_group **groups)
++{
++	return sysfs_create_groups(&cls->p->subsys.kobj, groups);
++}
++
++static void class_remove_groups(struct class *cls,
++				const struct attribute_group **groups)
++{
++	return sysfs_remove_groups(&cls->p->subsys.kobj, groups);
++}
++
+ int __class_register(struct class *cls, struct lock_class_key *key)
+ {
+ 	struct subsys_private *cp;
+@@ -203,6 +215,8 @@ int __class_register(struct class *cls,
+ 		kfree(cp);
+ 		return error;
+ 	}
++	error = class_add_groups(class_get(cls), cls->class_groups);
++	class_put(cls);
+ 	error = add_class_attrs(class_get(cls));
+ 	class_put(cls);
+ 	return error;
+@@ -213,6 +227,7 @@ void class_unregister(struct class *cls)
+ {
+ 	pr_debug("device class '%s': unregistering\n", cls->name);
+ 	remove_class_attrs(cls);
++	class_remove_groups(cls, cls->class_groups);
+ 	kset_unregister(&cls->p->subsys);
+ }
+ 
+--- a/include/linux/device.h
++++ b/include/linux/device.h
+@@ -360,6 +360,7 @@ int subsys_virtual_register(struct bus_t
+  * @name:	Name of the class.
+  * @owner:	The module owner.
+  * @class_attrs: Default attributes of this class.
++ * @class_groups: Default attributes of this class.
+  * @dev_groups:	Default attributes of the devices that belong to the class.
+  * @dev_kobj:	The kobject that represents this class and links it into the hierarchy.
+  * @dev_uevent:	Called when a device is added, removed from this class, or a
+@@ -388,6 +389,7 @@ struct class {
+ 	struct module		*owner;
+ 
+ 	struct class_attribute		*class_attrs;
++	const struct attribute_group	**class_groups;
+ 	const struct attribute_group	**dev_groups;
+ 	struct kobject			*dev_kobj;
+