linux-kernel - [PATCH] ACPI: make kobj

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Message-Id: <20230214-kobj_type-acpi-v1-1-6dbe3840208b@weissschuh.net>
Date:   Tue, 14 Feb 2023 03:23:52 +0000
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>
Cc:     linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH] ACPI: make kobj_type structures 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 definitions to prevent
modification at runtime.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 drivers/acpi/cppc_acpi.c    | 2 +-
 drivers/acpi/device_sysfs.c | 2 +-
 drivers/acpi/sysfs.c        | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 0f17b1c32718..a8f58b32d66f 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -193,7 +193,7 @@ static struct attribute *cppc_attrs[] = {
 };
 ATTRIBUTE_GROUPS(cppc);
 
-static struct kobj_type cppc_ktype = {
+static const struct kobj_type cppc_ktype = {
 	.sysfs_ops = &kobj_sysfs_ops,
 	.default_groups = cppc_groups,
 };
diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
index 120873dad2cc..c3aa15571f16 100644
--- a/drivers/acpi/device_sysfs.c
+++ b/drivers/acpi/device_sysfs.c
@@ -78,7 +78,7 @@ static void acpi_data_node_release(struct kobject *kobj)
 	complete(&dn->kobj_done);
 }
 
-static struct kobj_type acpi_data_node_ktype = {
+static const struct kobj_type acpi_data_node_ktype = {
 	.sysfs_ops = &acpi_data_node_sysfs_ops,
 	.default_groups = acpi_data_node_default_groups,
 	.release = acpi_data_node_release,
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 7db3b530279b..7f4ff56c9d42 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -953,7 +953,7 @@ static struct attribute *hotplug_profile_attrs[] = {
 };
 ATTRIBUTE_GROUPS(hotplug_profile);
 
-static struct kobj_type acpi_hotplug_profile_ktype = {
+static const struct kobj_type acpi_hotplug_profile_ktype = {
 	.sysfs_ops = &kobj_sysfs_ops,
 	.default_groups = hotplug_profile_groups,
 };

---
base-commit: f6feea56f66d34259c4222fa02e8171c4f2673d1
change-id: 20230214-kobj_type-acpi-3ade041e87cc

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