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driver core: class: remove dev_kobj from struct class

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The dev_kobj field in struct class is now only written to, but never
read from, so it can be removed as it is useless.

Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230331093318.82288-5-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-03-31 11:33:16 +02:00
parent d6bdbbdfb0
commit e78195d529
3 changed files with 0 additions and 7 deletions
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1
block/genhd.c
View File

@ -899,7 +899,6 @@ static int __init genhd_device_init(void)
{
int error;
block_class.dev_kobj = sysfs_dev_block_kobj;
error = class_register(&block_class);
if (unlikely(error))
return error;

4
drivers/base/class.c
View File

@ -197,10 +197,6 @@ int class_register(struct class *cls)
return error;
}
/* set the default /sys/dev directory for devices of this class */
if (!cls->dev_kobj)
cls->dev_kobj = sysfs_dev_char_kobj;
cp->subsys.kobj.kset = class_kset;
cp->subsys.kobj.ktype = &class_ktype;
cp->class = cls;

2
include/linux/device/class.h
View File

@ -27,7 +27,6 @@ struct fwnode_handle;
* @name: Name of the 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
* few other things that generate uevents to add the environment
* variables.
@ -55,7 +54,6 @@ struct class {
const struct attribute_group **class_groups;
const struct attribute_group **dev_groups;
struct kobject *dev_kobj;
int (*dev_uevent)(const struct device *dev, struct kobj_uevent_env *env);
char *(*devnode)(const struct device *dev, umode_t *mode);