diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 24612029f4502064b64c53ba52426c52a9337adc..32587cc7630625e80872f5550b1bb34eea465176 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -23,7 +23,6 @@ static DEFINE_PER_CPU(struct cpuid, cpu_id);
  */
 void cpu_init(void)
 {
-	struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
 	struct cpuid *id = &__get_cpu_var(cpu_id);
 
 	get_cpu_id(id);
@@ -31,7 +30,6 @@ void cpu_init(void)
 	current->active_mm = &init_mm;
 	BUG_ON(current->mm);
 	enter_lazy_tlb(&init_mm, current);
-	memset(idle, 0, sizeof(*idle));
 }
 
 /*