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path: root/drivers/cpuidle/governors/ladder.c
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Diffstat (limited to 'drivers/cpuidle/governors/ladder.c')
-rw-r--r--drivers/cpuidle/governors/ladder.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/cpuidle/governors/ladder.c b/drivers/cpuidle/governors/ladder.c
index b6a09ea859b1..2aef26c520bb 100644
--- a/drivers/cpuidle/governors/ladder.c
+++ b/drivers/cpuidle/governors/ladder.c
@@ -88,6 +88,7 @@ static int ladder_select_state(struct cpuidle_driver *drv,
/* consider promotion */
if (last_idx < drv->state_count - 1 &&
+ !dev->states_usage[last_idx + 1].disable &&
last_residency > last_state->threshold.promotion_time &&
drv->states[last_idx + 1].exit_latency <= latency_req) {
last_state->stats.promotion_count++;
@@ -100,7 +101,8 @@ static int ladder_select_state(struct cpuidle_driver *drv,
/* consider demotion */
if (last_idx > CPUIDLE_DRIVER_STATE_START &&
- drv->states[last_idx].exit_latency > latency_req) {
+ (dev->states_usage[last_idx].disable ||
+ drv->states[last_idx].exit_latency > latency_req)) {
int i;
for (i = last_idx - 1; i > CPUIDLE_DRIVER_STATE_START; i--) {