diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h
index 041f0b97c45b..0bf80c5b440a 100644
--- a/arch/powerpc/include/asm/smp.h
+++ b/arch/powerpc/include/asm/smp.h
@@ -30,7 +30,6 @@ extern int spinning_secondaries;
 extern u32 *cpu_to_phys_id;
 extern bool coregroup_enabled;
 
-extern void cpu_die(void);
 extern int cpu_to_chip_id(int cpu);
 
 #ifdef CONFIG_SMP
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 24b0476c1d4f..4ae767c455b8 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -1492,11 +1492,7 @@ void __cpu_die(unsigned int cpu)
 void arch_cpu_idle_dead(void)
 {
 	sched_preempt_enable_no_resched();
-	cpu_die();
-}
 
-void cpu_die(void)
-{
 	/*
 	 * Disable on the down path. This will be re-enabled by
 	 * start_secondary() via start_secondary_resume() below