3 files changed, 6 insertions, 8 deletions

diff --git a/arch/x86/include/asm/idle.h b/arch/x86/include/asm/idle.h
index 44c89c3a23e9..38d87379e270 100644
--- a/arch/x86/include/asm/idle.h
+++ b/arch/x86/include/asm/idle.h
@@ -8,8 +8,13 @@ struct notifier_block;
 void idle_notifier_register(struct notifier_block *n);
 void idle_notifier_unregister(struct notifier_block *n);
 
+#ifdef CONFIG_X86_64
 void enter_idle(void);
 void exit_idle(void);
+#else /* !CONFIG_X86_64 */
+static inline void enter_idle(void) { }
+static inline void exit_idle(void) { }
+#endif /* CONFIG_X86_64 */
 
 void c1e_remove_cpu(int cpu);
 
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 16f94879b525..0fd083713f62 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -814,9 +814,7 @@ void smp_apic_timer_interrupt(struct pt_regs *regs)
          * Besides, if we don't timer interrupts ignore the global
          * interrupt lock, which is the WrongThing (tm) to do.
          */
-#ifdef CONFIG_X86_64
         exit_idle();
-#endif
         irq_enter();
         local_apic_timer_interrupt();
         irq_exit();
@@ -1682,9 +1680,7 @@ void smp_spurious_interrupt(struct pt_regs *regs)
 {
         u32 v;
 
-#ifdef CONFIG_X86_64
         exit_idle();
-#endif
         irq_enter();
         /*
          * Check if this really is a spurious interrupt and ACK it
@@ -1713,9 +1709,7 @@ void smp_error_interrupt(struct pt_regs *regs)
 {
         u32 v, v1;
 
-#ifdef CONFIG_X86_64
         exit_idle();
-#endif
         irq_enter();
         /* First tickle the hardware, only then report what went on. -- REW */
         v = apic_read(APIC_ESR);
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index 9043251210fb..679e7bbbbcd6 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -2216,10 +2216,9 @@ static void set_ir_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
 asmlinkage void smp_irq_move_cleanup_interrupt(void)
 {
         unsigned vector, me;
+
         ack_APIC_irq();
-#ifdef CONFIG_X86_64
         exit_idle();
-#endif
         irq_enter();
 
         me = smp_processor_id();