static int cpuidle_add_state_sysfs()

in sysfs.c [469:506]

• 33 lines of code
• 5 McCabe index (conditional complexity)

static int cpuidle_add_state_sysfs(struct cpuidle_device *device)
{
	int i, ret = -ENOMEM;
	struct cpuidle_state_kobj *kobj;
	struct cpuidle_device_kobj *kdev = device->kobj_dev;
	struct cpuidle_driver *drv = cpuidle_get_cpu_driver(device);

	/* state statistics */
	for (i = 0; i < drv->state_count; i++) {
		kobj = kzalloc(sizeof(struct cpuidle_state_kobj), GFP_KERNEL);
		if (!kobj) {
			ret = -ENOMEM;
			goto error_state;
		}
		kobj->state = &drv->states[i];
		kobj->state_usage = &device->states_usage[i];
		kobj->device = device;
		init_completion(&kobj->kobj_unregister);

		ret = kobject_init_and_add(&kobj->kobj, &ktype_state_cpuidle,
					   &kdev->kobj, "state%d", i);
		if (ret) {
			kobject_put(&kobj->kobj);
			kfree(kobj);
			goto error_state;
		}
		cpuidle_add_s2idle_attr_group(kobj);
		kobject_uevent(&kobj->kobj, KOBJ_ADD);
		device->kobjs[i] = kobj;
	}

	return 0;

error_state:
	for (i = i - 1; i >= 0; i--)
		cpuidle_free_state_kobj(device, i);
	return ret;
}