diff options
| author | Daniel Lezcano <daniel.lezcano@linaro.org> | 2013-06-12 15:08:54 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-07-15 02:09:47 +0200 |
| commit | 5df0aa7341bd94ca2023a60c64c63faeb6ec209d (patch) | |
| tree | a4e6acbd29f402899f80cef9cba2d21ca6b44a78 /drivers/cpuidle | |
| parent | cpuidle: Introduce __cpuidle_unregister_device() (diff) | |
| download | linux-5df0aa7341bd94ca2023a60c64c63faeb6ec209d.tar.xz linux-5df0aa7341bd94ca2023a60c64c63faeb6ec209d.zip | |
cpuidle: Introduce __cpuidle_device_init()
Add __cpuidle_device_init() for initializing the cpuidle_device
structure.
[rjw: Changelog]
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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; |