diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 3f5d63892d90..5240aa28bc90 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -317,6 +317,8 @@ extern struct zone *zone_for_pfn_range(enum mmop online_type,
 extern int arch_create_linear_mapping(int nid, u64 start, u64 size,
 				      struct mhp_params *params);
 void arch_remove_linear_mapping(u64 start, u64 size);
+#else
+static inline enum mmop mhp_get_default_online_type(void) { return MMOP_OFFLINE; }
 #endif /* CONFIG_MEMORY_HOTPLUG */
 
 #endif /* __LINUX_MEMORY_HOTPLUG_H */
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 1dc0a1bb3a75..73c4a1b9895d 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -241,6 +241,7 @@ enum mmop mhp_get_default_online_type(void)
 
 	return mhp_default_online_type;
 }
+EXPORT_SYMBOL_GPL(mhp_get_default_online_type);
 
 void mhp_set_default_online_type(enum mmop online_type)
 {