diff --git a/kernel/cpu.c b/kernel/cpu.c
index a1860d42aacf..0db8938fbb23 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -126,15 +126,6 @@ struct cpuhp_step {
 static DEFINE_MUTEX(cpuhp_state_mutex);
 static struct cpuhp_step cpuhp_hp_states[];
 
-static bool cpuhp_is_ap_state(enum cpuhp_state state)
-{
-	/*
-	 * The extra check for CPUHP_TEARDOWN_CPU is only for documentation
-	 * purposes as that state is handled explicitly in cpu_down.
-	 */
-	return state > CPUHP_BRINGUP_CPU && state != CPUHP_TEARDOWN_CPU;
-}
-
 static struct cpuhp_step *cpuhp_get_step(enum cpuhp_state state)
 {
 	return cpuhp_hp_states + state;
@@ -235,6 +226,15 @@ err:
 }
 
 #ifdef CONFIG_SMP
+static bool cpuhp_is_ap_state(enum cpuhp_state state)
+{
+	/*
+	 * The extra check for CPUHP_TEARDOWN_CPU is only for documentation
+	 * purposes as that state is handled explicitly in cpu_down.
+	 */
+	return state > CPUHP_BRINGUP_CPU && state != CPUHP_TEARDOWN_CPU;
+}
+
 static inline void wait_for_ap_thread(struct cpuhp_cpu_state *st, bool bringup)
 {
 	struct completion *done = bringup ? &st->done_up : &st->done_down;