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cpuidle: Fix finding state with min power_usage

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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 <sivaramn@nvidia.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sivaram Nair 2012-12-18 13:52:50 +01:00 committed by Rafael J. Wysocki
parent d1c3ed669a
commit 0e5537b30d
2 changed files with 2 additions and 2 deletions
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2
drivers/cpuidle/cpuidle.c
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@ -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;

2
drivers/cpuidle/governors/menu.c
View File

@ -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;