diff options
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index d78c6d89272f..5b63185da59b 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -276,7 +276,7 @@ static void poll_idle_init(struct cpuidle_driver *drv) {} */ int cpuidle_enable_device(struct cpuidle_device *dev) { - int ret, i; + int ret; struct cpuidle_driver *drv; if (!dev) @@ -306,12 +306,6 @@ int cpuidle_enable_device(struct cpuidle_device *dev) (ret = cpuidle_curr_governor->enable(drv, dev))) goto fail_sysfs; - for (i = 0; i < dev->state_count; i++) { - dev->states_usage[i].usage = 0; - dev->states_usage[i].time = 0; - } - dev->last_residency = 0; - smp_wmb(); dev->enabled = 1; @@ -364,6 +358,14 @@ static void __cpuidle_unregister_device(struct cpuidle_device *dev) module_put(drv->owner); } +static int __cpuidle_device_init(struct cpuidle_device *dev) +{ + memset(dev->states_usage, 0, sizeof(dev->states_usage)); + dev->last_residency = 0; + + return 0; +} + /** * __cpuidle_register_device - internal register function called before register * and enable routines @@ -405,6 +407,10 @@ int cpuidle_register_device(struct cpuidle_device *dev) mutex_lock(&cpuidle_lock); + ret = __cpuidle_device_init(dev); + if (ret) + goto out_unlock; + ret = __cpuidle_register_device(dev); if (ret) goto out_unlock; |