diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 8537429d33a6..935eb332bbb4 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1764,34 +1764,6 @@ static int check_cpu_on_node(pg_data_t *pgdat)
 	return 0;
 }
 
-static void unmap_cpu_on_node(pg_data_t *pgdat)
-{
-#ifdef CONFIG_ACPI_NUMA
-	int cpu;
-
-	for_each_possible_cpu(cpu)
-		if (cpu_to_node(cpu) == pgdat->node_id)
-			numa_clear_node(cpu);
-#endif
-}
-
-static int check_and_unmap_cpu_on_node(pg_data_t *pgdat)
-{
-	int ret;
-
-	ret = check_cpu_on_node(pgdat);
-	if (ret)
-		return ret;
-
-	/*
-	 * the node will be offlined when we come here, so we can clear
-	 * the cpu_to_node() now.
-	 */
-
-	unmap_cpu_on_node(pgdat);
-	return 0;
-}
-
 /**
  * try_offline_node
  * @nid: the node ID
@@ -1824,7 +1796,7 @@ void try_offline_node(int nid)
 		return;
 	}
 
-	if (check_and_unmap_cpu_on_node(pgdat))
+	if (check_cpu_on_node(pgdat))
 		return;
 
 	/*