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platform/x86: think-lmi: Fix sysfs group cleanup

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commit 4f30f946f27b7f044cf8f3f1f353dee1dcd3517a upstream.

Many error paths in tlmi_sysfs_init() lead to sysfs groups being removed
when they were not even created.

Fix this by letting the kobject core manage these groups through their
kobj_type's defult_groups.

Fixes: a40cd7ef22 ("platform/x86: think-lmi: Add WMI interface support on Lenovo platforms")
Cc: stable@vger.kernel.org
Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Link: https://lore.kernel.org/r/20250630-lmi-fix-v3-3-ce4f81c9c481@gmail.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kurt Borja
2025-06-30 14:31:21 -03:00
committed by Greg Kroah-Hartman
parent 98002f1ac9
commit 4b91b77af2
1 changed files with 4 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/platform/x86/think-lmi.c
View File

@@ -916,6 +916,7 @@ static const struct attribute_group auth_attr_group = {
.is_visible = auth_attr_is_visible,
.attrs = auth_attrs,
};
__ATTRIBUTE_GROUPS(auth_attr);
/* ---- Attributes sysfs --------------------------------------------------------- */
static ssize_t display_name_show(struct kobject *kobj, struct kobj_attribute *attr,
@@ -1119,6 +1120,7 @@ static const struct attribute_group tlmi_attr_group = {
.is_visible = attr_is_visible,
.attrs = tlmi_attrs,
};
__ATTRIBUTE_GROUPS(tlmi_attr);
static void tlmi_attr_setting_release(struct kobject *kobj)
{
@@ -1138,11 +1140,13 @@ static void tlmi_pwd_setting_release(struct kobject *kobj)
static const struct kobj_type tlmi_attr_setting_ktype = {
.release = &tlmi_attr_setting_release,
.sysfs_ops = &kobj_sysfs_ops,
.default_groups = tlmi_attr_groups,
};
static const struct kobj_type tlmi_pwd_setting_ktype = {
.release = &tlmi_pwd_setting_release,
.sysfs_ops = &kobj_sysfs_ops,
.default_groups = auth_attr_groups,
};
static ssize_t pending_reboot_show(struct kobject *kobj, struct kobj_attribute *attr,
@@ -1213,14 +1217,8 @@ static struct kobj_attribute debug_cmd = __ATTR_WO(debug_cmd);
static void tlmi_release_attr(void)
{
struct kobject *pos, *n;
int i;
/* Attribute structures */
for (i = 0; i < TLMI_SETTINGS_COUNT; i++) {
if (tlmi_priv.setting[i]) {
sysfs_remove_group(&tlmi_priv.setting[i]->kobj, &tlmi_attr_group);
}
}
sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &pending_reboot.attr);
if (tlmi_priv.can_debug_cmd && debug_support)
sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &debug_cmd.attr);
@@ -1235,15 +1233,6 @@ static void tlmi_release_attr(void)
kfree(tlmi_priv.pwd_admin->save_signature);
/* Authentication structures */
sysfs_remove_group(&tlmi_priv.pwd_admin->kobj, &auth_attr_group);
sysfs_remove_group(&tlmi_priv.pwd_power->kobj, &auth_attr_group);
if (tlmi_priv.opcode_support) {
sysfs_remove_group(&tlmi_priv.pwd_system->kobj, &auth_attr_group);
sysfs_remove_group(&tlmi_priv.pwd_hdd->kobj, &auth_attr_group);
sysfs_remove_group(&tlmi_priv.pwd_nvme->kobj, &auth_attr_group);
}
list_for_each_entry_safe(pos, n, &tlmi_priv.authentication_kset->list, entry)
kobject_put(pos);
@@ -1314,10 +1303,6 @@ static int tlmi_sysfs_init(void)
NULL, "%s", tlmi_priv.setting[i]->display_name);
if (ret)
goto fail_create_attr;
ret = sysfs_create_group(&tlmi_priv.setting[i]->kobj, &tlmi_attr_group);
if (ret)
goto fail_create_attr;
}
ret = sysfs_create_file(&tlmi_priv.attribute_kset->kobj, &pending_reboot.attr);
@@ -1337,20 +1322,12 @@ static int tlmi_sysfs_init(void)
if (ret)
goto fail_create_attr;
ret = sysfs_create_group(&tlmi_priv.pwd_admin->kobj, &auth_attr_group);
if (ret)
goto fail_create_attr;
tlmi_priv.pwd_power->kobj.kset = tlmi_priv.authentication_kset;
ret = kobject_init_and_add(&tlmi_priv.pwd_power->kobj, &tlmi_pwd_setting_ktype,
NULL, "%s", "Power-on");
if (ret)
goto fail_create_attr;
ret = sysfs_create_group(&tlmi_priv.pwd_power->kobj, &auth_attr_group);
if (ret)
goto fail_create_attr;
if (tlmi_priv.opcode_support) {
tlmi_priv.pwd_system->kobj.kset = tlmi_priv.authentication_kset;
ret = kobject_init_and_add(&tlmi_priv.pwd_system->kobj, &tlmi_pwd_setting_ktype,
@@ -1358,29 +1335,17 @@ static int tlmi_sysfs_init(void)
if (ret)
goto fail_create_attr;
ret = sysfs_create_group(&tlmi_priv.pwd_system->kobj, &auth_attr_group);
if (ret)
goto fail_create_attr;
tlmi_priv.pwd_hdd->kobj.kset = tlmi_priv.authentication_kset;
ret = kobject_init_and_add(&tlmi_priv.pwd_hdd->kobj, &tlmi_pwd_setting_ktype,
NULL, "%s", "HDD");
if (ret)
goto fail_create_attr;
ret = sysfs_create_group(&tlmi_priv.pwd_hdd->kobj, &auth_attr_group);
if (ret)
goto fail_create_attr;
tlmi_priv.pwd_nvme->kobj.kset = tlmi_priv.authentication_kset;
ret = kobject_init_and_add(&tlmi_priv.pwd_nvme->kobj, &tlmi_pwd_setting_ktype,
NULL, "%s", "NVMe");
if (ret)
goto fail_create_attr;
ret = sysfs_create_group(&tlmi_priv.pwd_nvme->kobj, &auth_attr_group);
if (ret)
goto fail_create_attr;
}
return ret;