在2022年10月7日十月 下午3:52，Greg KH写道：
[...]
>> +
>> +static int cpuregs_cpu_offline(unsigned int cpu)
>> +{
>> + struct device *dev;
>> + struct cpureg *reg = per_cpu(cpuregs, cpu);
>> +
>> + dev = get_cpu_device(cpu);
>> + if (!dev || !reg)
>> + return -ENODEV;
>> + if (reg->kobj.parent) {
>
> Why are you looking at the parent of a kobject? Why not just always
> remove the kobject if you have a reference to it now? How does the
> parent matter?
Another dummy copy from Arm64 code... kobject_put should be enough here?
Thanks
>
> thanks,
>
> greg k-h
--
- Jiaxun
