linux-kernel - [PATCH] kobject: make dynamic_kobj_ktype and kset

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Message-Id: <20230204-kobj_type-kobj-v1-1-ddd1b4ef8ab5@weissschuh.net>
Date:   Sat, 04 Feb 2023 21:59:50 +0000
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH] kobject: make dynamic_kobj_ktype and kset_ktype const

Since commit ee6d3dd4ed48 ("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@...ssschuh.net>
---
 lib/kobject.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/kobject.c b/lib/kobject.c
index 985ee1c4f2c6..52e2f9634f61 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -729,7 +729,7 @@ static void dynamic_kobj_release(struct kobject *kobj)
 	kfree(kobj);
 }
 
-static struct kobj_type dynamic_kobj_ktype = {
+static const struct kobj_type dynamic_kobj_ktype = {
 	.release	= dynamic_kobj_release,
 	.sysfs_ops	= &kobj_sysfs_ops,
 };
@@ -913,7 +913,7 @@ static void kset_get_ownership(const struct kobject *kobj, kuid_t *uid, kgid_t *
 		kobject_get_ownership(kobj->parent, uid, gid);
 }
 
-static struct kobj_type kset_ktype = {
+static const struct kobj_type kset_ktype = {
 	.sysfs_ops	= &kobj_sysfs_ops,
 	.release	= kset_release,
 	.get_ownership	= kset_get_ownership,

---
base-commit: db27c22251e7c8f3a9d5bfb55c9c8c701a70bbb3
change-id: 20230204-kobj_type-kobj-d1f02471bbac

Best regards,
-- 
Thomas Weißschuh <linux@...ssschuh.net>