diff options
Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index ce4cac706dd..711dd83fd3b 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -68,7 +68,7 @@ static cpuidle_enter_t cpuidle_enter_ops; int cpuidle_play_dead(void) { struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices); - struct cpuidle_driver *drv = cpuidle_get_driver(); + struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev); int i, dead_state = -1; int power_usage = -1; @@ -128,7 +128,7 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, int cpuidle_idle_call(void) { struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices); - struct cpuidle_driver *drv = cpuidle_get_driver(); + struct cpuidle_driver *drv; int next_state, entered_state; if (off) @@ -141,6 +141,8 @@ int cpuidle_idle_call(void) if (!dev || !dev->enabled) return -EBUSY; + drv = cpuidle_get_cpu_driver(dev); + /* ask the governor for the next state */ next_state = cpuidle_curr_governor->select(drv, dev); if (need_resched()) { @@ -312,15 +314,19 @@ static void poll_idle_init(struct cpuidle_driver *drv) {} int cpuidle_enable_device(struct cpuidle_device *dev) { int ret, i; - struct cpuidle_driver *drv = cpuidle_get_driver(); + struct cpuidle_driver *drv; if (!dev) return -EINVAL; if (dev->enabled) return 0; + + drv = cpuidle_get_cpu_driver(dev); + if (!drv || !cpuidle_curr_governor) return -EIO; + if (!dev->state_count) dev->state_count = drv->state_count; @@ -335,7 +341,8 @@ int cpuidle_enable_device(struct cpuidle_device *dev) poll_idle_init(drv); - if ((ret = cpuidle_add_state_sysfs(dev))) + ret = cpuidle_add_device_sysfs(dev); + if (ret) return ret; if (cpuidle_curr_governor->enable && @@ -356,7 +363,7 @@ int cpuidle_enable_device(struct cpuidle_device *dev) return 0; fail_sysfs: - cpuidle_remove_state_sysfs(dev); + cpuidle_remove_device_sysfs(dev); return ret; } @@ -372,17 +379,20 @@ EXPORT_SYMBOL_GPL(cpuidle_enable_device); */ void cpuidle_disable_device(struct cpuidle_device *dev) { + struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev); + if (!dev || !dev->enabled) return; - if (!cpuidle_get_driver() || !cpuidle_curr_governor) + + if (!drv || !cpuidle_curr_governor) return; dev->enabled = 0; if (cpuidle_curr_governor->disable) - cpuidle_curr_governor->disable(cpuidle_get_driver(), dev); + cpuidle_curr_governor->disable(drv, dev); - cpuidle_remove_state_sysfs(dev); + cpuidle_remove_device_sysfs(dev); enabled_devices--; } @@ -398,9 +408,9 @@ EXPORT_SYMBOL_GPL(cpuidle_disable_device); static int __cpuidle_register_device(struct cpuidle_device *dev) { int ret; - struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver(); + struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev); - if (!try_module_get(cpuidle_driver->owner)) + if (!try_module_get(drv->owner)) return -EINVAL; per_cpu(cpuidle_devices, dev->cpu) = dev; @@ -421,7 +431,7 @@ err_coupled: err_sysfs: list_del(&dev->device_list); per_cpu(cpuidle_devices, dev->cpu) = NULL; - module_put(cpuidle_driver->owner); + module_put(drv->owner); return ret; } @@ -460,7 +470,7 @@ EXPORT_SYMBOL_GPL(cpuidle_register_device); */ void cpuidle_unregister_device(struct cpuidle_device *dev) { - struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver(); + struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev); if (dev->registered == 0) return; @@ -477,7 +487,7 @@ void cpuidle_unregister_device(struct cpuidle_device *dev) cpuidle_resume_and_unlock(); - module_put(cpuidle_driver->owner); + module_put(drv->owner); } EXPORT_SYMBOL_GPL(cpuidle_unregister_device); |