linux-kernel - [PATCH] of: make of_node

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Message-Id: <20230204-kobj_type-of-v1-1-5910c8ecb7a3@weissschuh.net>
Date:   Sat, 04 Feb 2023 05:47:03 +0000
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH] of: make of_node_ktype constant

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 definition to prevent
modification at runtime.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 drivers/of/kobj.c  | 2 +-
 include/linux/of.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/of/kobj.c b/drivers/of/kobj.c
index 7d3853a5a09a..3dbce1e6f184 100644
--- a/drivers/of/kobj.c
+++ b/drivers/of/kobj.c
@@ -24,7 +24,7 @@ static void of_node_release(struct kobject *kobj)
 }
 #endif /* CONFIG_OF_DYNAMIC */
 
-struct kobj_type of_node_ktype = {
+const struct kobj_type of_node_ktype = {
 	.release = of_node_release,
 };
 
diff --git a/include/linux/of.h b/include/linux/of.h
index 8b9f94386dc3..8bb348666709 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -101,7 +101,7 @@ struct of_reconfig_data {
 };
 
 /* initialize a node */
-extern struct kobj_type of_node_ktype;
+extern const struct kobj_type of_node_ktype;
 extern const struct fwnode_operations of_fwnode_ops;
 static inline void of_node_init(struct device_node *node)
 {

---
base-commit: 0136d86b78522bbd5755f8194c97a987f0586ba5
change-id: 20230204-kobj_type-of-cc701bdb2730

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