cpuidle_enter_state
entered_state = cpuidle_enter_state(dev, drv,
entered_state = cpuidle_enter_state(dev, drv,
entered_state = cpuidle_enter_state(dev, drv, next_state);
ret = cpuidle_enter_state(dev, drv, index);
extern int cpuidle_enter_state(struct cpuidle_device *dev,