diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 5458403..d69d77a 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -2026,6 +2026,7 @@
 	acpi_csrt_init();
 	acpi_container_init();
 	acpi_pci_slot_init();
+	acpi_memory_hotplug_init();
 
 	mutex_lock(&acpi_scan_lock);
 	/*