From: Sivaram Nair Date: Tue, 18 Dec 2012 12:52:50 +0000 (+0100) Subject: cpuidle: Fix finding state with min power_usage X-Git-Tag: firefly_0821_release~3680^2~1296^2~3^2~3 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0e5537b30d3029d784226ab51c2b923d1155b553;p=firefly-linux-kernel-4.4.55.git cpuidle: Fix finding state with min power_usage Since cpuidle_state.power_usage is a signed value, use INT_MAX (instead of -1) to init the local copies so that functions that tries to find cpuidle states with minimum power usage works correctly even if they use non-negative values. Signed-off-by: Sivaram Nair Reviewed-by: Rik van Riel Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index 8df53dd8dbe1..fb4a7dd57f94 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -70,7 +70,7 @@ 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 = -1; + int power_usage = INT_MAX; if (!drv) return -ENODEV; diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index bd40b943b6db..20ea33afdda1 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -312,7 +312,7 @@ 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 = -1; + int power_usage = INT_MAX; int i; int multiplier; struct timespec t;