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driver core: remove class_attrs from struct class

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This field is no longer used or needed (use class_groups instead), so it
can be removed along with the driver core functionality that created and
removed these files.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2017-06-08 10:12:42 +02:00
parent dc307f921f
commit ecbaa83ee8
2 changed files with 0 additions and 35 deletions
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33
drivers/base/class.c
View File

@ -119,36 +119,6 @@ static void class_put(struct class *cls)
kset_put(&cls->p->subsys);
}
static int add_class_attrs(struct class *cls)
{
int i;
int error = 0;
if (cls->class_attrs) {
for (i = 0; cls->class_attrs[i].attr.name; i++) {
error = class_create_file(cls, &cls->class_attrs[i]);
if (error)
goto error;
}
}
done:
return error;
error:
while (--i >= 0)
class_remove_file(cls, &cls->class_attrs[i]);
goto done;
}
static void remove_class_attrs(struct class *cls)
{
int i;
if (cls->class_attrs) {
for (i = 0; cls->class_attrs[i].attr.name; i++)
class_remove_file(cls, &cls->class_attrs[i]);
}
}
static void klist_class_dev_get(struct klist_node *n)
{
struct device *dev = container_of(n, struct device, knode_class);
@ -217,8 +187,6 @@ int __class_register(struct class *cls, struct lock_class_key *key)
}
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;
}
EXPORT_SYMBOL_GPL(__class_register);
@ -226,7 +194,6 @@ EXPORT_SYMBOL_GPL(__class_register);
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);
}

2
include/linux/device.h
View File

@ -365,7 +365,6 @@ int subsys_virtual_register(struct bus_type *subsys,
* struct class - device classes
* @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.
@ -394,7 +393,6 @@ struct class {
const char *name;
struct module *owner;
struct class_attribute *class_attrs;
const struct attribute_group **class_groups;
const struct attribute_group **dev_groups;
struct kobject *dev_kobj;