The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 4f30f946f27b7f044cf8f3f1f353dee1dcd3517a # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2025070829-barometer-imagines-9277@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 4f30f946f27b7f044cf8f3f1f353dee1dcd3517a Mon Sep 17 00:00:00 2001 From: Kurt Borja kuurtb@gmail.com Date: Mon, 30 Jun 2025 14:31:21 -0300 Subject: [PATCH] platform/x86: think-lmi: Fix sysfs group cleanup MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
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: a40cd7ef22fb ("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
diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c index 69f361f21f0f..b73b84fdb15e 100644 --- a/drivers/platform/x86/think-lmi.c +++ b/drivers/platform/x86/think-lmi.c @@ -973,6 +973,7 @@ 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, @@ -1188,6 +1189,7 @@ 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) { @@ -1207,11 +1209,13 @@ 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, @@ -1381,14 +1385,8 @@ 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); sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &save_settings.attr);
@@ -1405,15 +1403,6 @@ 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);
@@ -1484,10 +1473,6 @@ 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); @@ -1511,20 +1496,12 @@ 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, @@ -1532,29 +1509,17 @@ 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;