[PATCH v3 1/3] ACPI: APEI: GHES: Add devm_ghes_register_vendor_record_notifier()

Kai-Heng Feng
2026-03-30T09:42:32Z

Add a device-managed wrapper around ghes_register_vendor_record_notifier()
so drivers can avoid manual cleanup on device removal or probe failure.

Cc: Shiju Jose <shiju.jose@huawei.com>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Kai-Heng Feng <kaihengf@nvidia.com>
---
v3:
- Change patch title
- Move documentation to header file.
v2:
- New patch.

drivers/acpi/apei/ghes.c | 18 ++++++++++++++++++
include/acpi/ghes.h | 11 +++++++++++
2 files changed, 29 insertions(+)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 8acd2742bb27..3236a3ce79d6 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -689,6 +689,24 @@ void ghes_unregister_vendor_record_notifier(struct notifier_block *nb)
}
EXPORT_SYMBOL_GPL(ghes_unregister_vendor_record_notifier);

+static void ghes_vendor_record_notifier_destroy(void *nb)
+{
+ ghes_unregister_vendor_record_notifier(nb);
+}
+
+int devm_ghes_register_vendor_record_notifier(struct device *dev,
+ struct notifier_block *nb)
+{
+ int ret;
+
+ ret = ghes_register_vendor_record_notifier(nb);
+ if (ret)
+ return ret;
+
+ return devm_add_action_or_reset(dev, ghes_vendor_record_notifier_destroy, nb);
+}
+EXPORT_SYMBOL_GPL(devm_ghes_register_vendor_record_notifier);
+
static void ghes_vendor_record_work_func(struct work_struct *work)
{
struct ghes_vendor_record_entry *entry;
diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h
index 7bea522c0657..8d7e5caef3f1 100644
--- a/include/acpi/ghes.h
+++ b/include/acpi/ghes.h
@@ -71,6 +71,17 @@ int ghes_register_vendor_record_notifier(struct notifier_block *nb);
*/
void ghes_unregister_vendor_record_notifier(struct notifier_block *nb);

+/**
+ * devm_ghes_register_vendor_record_notifier - device-managed vendor
+ * record notifier registration.
+ * @dev: device that owns the notifier lifetime
+ * @nb: pointer to the notifier_block structure of the vendor record handler
+ *
+ * Return: 0 on success, negative errno on failure.
+ */
+int devm_ghes_register_vendor_record_notifier(struct device *dev,
+ struct notifier_block *nb);
+
struct list_head *ghes_get_devices(void);

void ghes_estatus_pool_region_free(unsigned long addr, u32 size);
--
2.50.1 (Apple Git-155)