driver core: make kobj_type structures constant

Since commit ee6d3dd4 ("driver core: make kobj_type constant.")
the driver core allows the usage of const struct kobj_type.

Take advantage of this to constify the structure definitions to prevent
modification at runtime.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20230204-kobj_type-driver-core-v1-1-b9f809419f2c@weissschuh.netSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/bus.c

@@ -91,7 +91,7 @@ static void driver_release(struct kobject *kobj)
 	kfree(drv_priv);
 }
 
-static struct kobj_type driver_ktype = {
+static const struct kobj_type driver_ktype = {
 	.sysfs_ops	= &driver_sysfs_ops,
 	.release	= driver_release,
 };
@@ -159,7 +159,7 @@ static void bus_release(struct kobject *kobj)
 	bus->p = NULL;
 }
 
-static struct kobj_type bus_ktype = {
+static const struct kobj_type bus_ktype = {
 	.sysfs_ops	= &bus_sysfs_ops,
 	.release	= bus_release,
 };

drivers/base/class.c

@@ -77,7 +77,7 @@ static const struct sysfs_ops class_sysfs_ops = {
 	.store	   = class_attr_store,
 };
 
-static struct kobj_type class_ktype = {
+static const struct kobj_type class_ktype = {
 	.sysfs_ops	= &class_sysfs_ops,
 	.release	= class_release,
 	.child_ns_type	= class_child_ns_type,

drivers/base/core.c

@@ -2354,7 +2354,7 @@ static void device_get_ownership(const struct kobject *kobj, kuid_t *uid, kgid_t
 		dev->class->get_ownership(dev, uid, gid);
 }
 
-static struct kobj_type device_ktype = {
+static const struct kobj_type device_ktype = {
 	.release	= device_release,
 	.sysfs_ops	= &dev_sysfs_ops,
 	.namespace	= device_namespace,
@@ -2992,7 +2992,7 @@ struct kobj_ns_type_operations *class_dir_child_ns_type(const struct kobject *ko
 	return dir->class->ns_type;
 }
 
-static struct kobj_type class_dir_ktype = {
+static const struct kobj_type class_dir_ktype = {
 	.release	= class_dir_release,
 	.sysfs_ops	= &kobj_sysfs_ops,
 	.child_ns_type	= class_dir_child_ns_type

drivers/base/swnode.c

@@ -760,7 +760,7 @@ static void software_node_release(struct kobject *kobj)
 	kfree(swnode);
 }
 
-static struct kobj_type software_node_type = {
+static const struct kobj_type software_node_type = {
 	.release = software_node_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 };