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path: root/drivers/cpuidle/cpuidle.c
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Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
-rw-r--r--drivers/cpuidle/cpuidle.c17
1 files changed, 4 insertions, 13 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)
69{ 69{
70 struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices); 70 struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
71 struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev); 71 struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
72 int i, dead_state = -1; 72 int i;
73 int power_usage = INT_MAX;
74 73
75 if (!drv) 74 if (!drv)
76 return -ENODEV; 75 return -ENODEV;
77 76
78 /* Find lowest-power state that supports long-term idle */ 77 /* Find lowest-power state that supports long-term idle */
79 for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++) { 78 for (i = drv->state_count - 1; i >= CPUIDLE_DRIVER_STATE_START; i--)
80 struct cpuidle_state *s = &drv->states[i]; 79 if (drv->states[i].enter_dead)
81 80 return drv->states[i].enter_dead(dev, i);
82 if (s->power_usage < power_usage && s->enter_dead) {
83 power_usage = s->power_usage;
84 dead_state = i;
85 }
86 }
87
88 if (dead_state != -1)
89 return drv->states[dead_state].enter_dead(dev, dead_state);
90 81
91 return -ENODEV; 82 return -ENODEV;
92} 83}