Commit e78195d5 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

driver core: class: remove dev_kobj from struct class 



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: default avatarRafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230331093318.82288-5-gregkh@linuxfoundation.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d6bdbbdf

block/genhd.c

+0 −1
Original line number Diff line number Diff line
@@ -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;

drivers/base/class.c

+0 −4
Original line number Diff line number Diff line
@@ -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;

include/linux/device/class.h

+0 −2
Original line number Diff line number Diff line
@@ -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);