3 files changed, 12 insertions, 1 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ed92864d1325..f8caf040650e 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -123,6 +123,9 @@ config GENERIC_TIME_VSYSCALL
 config ARCH_HAS_CPU_RELAX
         def_bool y
 
+config ARCH_HAS_DEFAULT_IDLE
+        def_bool y
+
 config ARCH_HAS_CACHE_LINE_SIZE
         def_bool y
 
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index cf5b1b7b684f..81b40ed5379e 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1587,6 +1587,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 
         if (acpi_idle_bm_check()) {
                 if (dev->safe_state) {
+                        dev->last_state = dev->safe_state;
                         return dev->safe_state->enter(dev, dev->safe_state);
                 } else {
                         local_irq_disable();
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 5ce07b517c58..bb6e3b338043 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -56,7 +56,11 @@ static void cpuidle_idle_call(void)
                 if (pm_idle_old)
                         pm_idle_old();
                 else
+#if defined(CONFIG_ARCH_HAS_DEFAULT_IDLE)
+                        default_idle();
+#else
                         local_irq_enable();
+#endif
                 return;
         }
 
@@ -67,8 +71,11 @@ static void cpuidle_idle_call(void)
         target_state = &dev->states[next_state];
 
         /* enter the state and update stats */
-        dev->last_residency = target_state->enter(dev, target_state);
         dev->last_state = target_state;
+        dev->last_residency = target_state->enter(dev, target_state);
+        if (dev->last_state)
+                target_state = dev->last_state;
+
         target_state->time += (unsigned long long)dev->last_residency;
         target_state->usage++;