linux-kernel - [PATCH] drm/amdgpu: make kobj

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Message-Id: <20230216-kobj_type-amdgpu-v1-1-b382ab606dc7@weissschuh.net>
Date:   Thu, 16 Feb 2023 01:07:27 +0000
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH] drm/amdgpu: 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/gpu/drm/amd/amdgpu/amdgpu_discovery.c | 10 +++++-----
 drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c      |  2 +-
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
index 1bbd56029a4f..8e04952e5144 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
@@ -704,7 +704,7 @@ static void ip_hw_instance_release(struct kobject *kobj)
 	kfree(ip_hw_instance);
 }
 
-static struct kobj_type ip_hw_instance_ktype = {
+static const struct kobj_type ip_hw_instance_ktype = {
 	.release = ip_hw_instance_release,
 	.sysfs_ops = &ip_hw_instance_sysfs_ops,
 	.default_groups = ip_hw_instance_groups,
@@ -723,7 +723,7 @@ static void ip_hw_id_release(struct kobject *kobj)
 	kfree(ip_hw_id);
 }
 
-static struct kobj_type ip_hw_id_ktype = {
+static const struct kobj_type ip_hw_id_ktype = {
 	.release = ip_hw_id_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 };
@@ -786,18 +786,18 @@ static const struct sysfs_ops ip_die_entry_sysfs_ops = {
 	.show = ip_die_entry_attr_show,
 };
 
-static struct kobj_type ip_die_entry_ktype = {
+static const struct kobj_type ip_die_entry_ktype = {
 	.release = ip_die_entry_release,
 	.sysfs_ops = &ip_die_entry_sysfs_ops,
 	.default_groups = ip_die_entry_groups,
 };
 
-static struct kobj_type die_kobj_ktype = {
+static const struct kobj_type die_kobj_ktype = {
 	.release = die_kobj_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 };
 
-static struct kobj_type ip_discovery_ktype = {
+static const struct kobj_type ip_discovery_ktype = {
 	.release = ip_disc_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 };
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
index 4b9e7b050ccd..6d13ce6ec9cc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
@@ -228,7 +228,7 @@ static const struct sysfs_ops amdgpu_xgmi_hive_ops = {
 	.show = amdgpu_xgmi_show_attrs,
 };
 
-struct kobj_type amdgpu_xgmi_hive_type = {
+static const struct kobj_type amdgpu_xgmi_hive_type = {
 	.release = amdgpu_xgmi_hive_release,
 	.sysfs_ops = &amdgpu_xgmi_hive_ops,
 	.default_groups = amdgpu_xgmi_hive_groups,

---
base-commit: 033c40a89f55525139fd5b6342281b09b97d05bf
change-id: 20230216-kobj_type-amdgpu-4d3f0e1e05d4

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