3 files changed, 6 insertions, 44 deletions

diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index fb4a7dd57f94..e1f6860e069c 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -69,24 +69,15 @@ int cpuidle_play_dead(void)
 {
         struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
         struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
-        int i, dead_state = -1;
-        int power_usage = INT_MAX;
+        int i;
 
         if (!drv)
                 return -ENODEV;
 
         /* Find lowest-power state that supports long-term idle */
-        for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++) {
-                struct cpuidle_state *s = &drv->states[i];
-
-                if (s->power_usage < power_usage && s->enter_dead) {
-                        power_usage = s->power_usage;
-                        dead_state = i;
-                }
-        }
-
-        if (dead_state != -1)
-                return drv->states[dead_state].enter_dead(dev, dead_state);
+        for (i = drv->state_count - 1; i >= CPUIDLE_DRIVER_STATE_START; i--)
+                if (drv->states[i].enter_dead)
+                        return drv->states[i].enter_dead(dev, i);
 
         return -ENODEV;
 }
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index c2b281afe0ed..422c7b69ba7c 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -19,34 +19,9 @@ DEFINE_SPINLOCK(cpuidle_driver_lock);
 static void __cpuidle_set_cpu_driver(struct cpuidle_driver *drv, int cpu);
 static struct cpuidle_driver * __cpuidle_get_cpu_driver(int cpu);
 
-static void set_power_states(struct cpuidle_driver *drv)
-{
-        int i;
-
-        /*
-         * cpuidle driver should set the drv->power_specified bit
-         * before registering if the driver provides
-         * power_usage numbers.
-         *
-         * If power_specified is not set,
-         * we fill in power_usage with decreasing values as the
-         * cpuidle code has an implicit assumption that state Cn
-         * uses less power than C(n-1).
-         *
-         * With CONFIG_ARCH_HAS_CPU_RELAX, C0 is already assigned
-         * an power value of -1.  So we use -2, -3, etc, for other
-         * c-states.
-         */
-        for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++)
-                drv->states[i].power_usage = -1 - i;
-}
-
 static void __cpuidle_driver_init(struct cpuidle_driver *drv)
 {
         drv->refcnt = 0;
-
-        if (!drv->power_specified)
-                set_power_states(drv);
 }
 
 static int __cpuidle_register_driver(struct cpuidle_driver *drv, int cpu)
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index 20ea33afdda1..fe343a06b7da 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -312,7 +312,6 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
 {
         struct menu_device *data = &__get_cpu_var(menu_devices);
         int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY);
-        int power_usage = INT_MAX;
         int i;
         int multiplier;
         struct timespec t;
@@ -383,11 +382,8 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
                 if (s->exit_latency * multiplier > data->predicted_us)
                         continue;
 
-                if (s->power_usage < power_usage) {
-                        power_usage = s->power_usage;
-                        data->last_state_idx = i;
-                        data->exit_us = s->exit_latency;
-                }
+                data->last_state_idx = i;
+                data->exit_us = s->exit_latency;
         }
 
         /* not deepest C-state chosen for low predicted residency */