Re: [PATCH net v4 0/4] net: phy: dp83640: fix shared clock lifetime and probe error cleanup

Hi Richard,

在 2026/8/11 21:11, Richard Cochran 写道:
> On Fri, Aug 07, 2026 at 03:07:25PM +0800, [email protected] wrote:
>> From: Xuanqiang Luo <[email protected]>
>>
>> The DP83640 driver shares one PTP clock between all PHYs on the same MII
>> bus.
>>
>> Its driver-local clock lookup and removal scheme can leak the shared clock
>> on probe failure or free it while another probe is acquiring it.
> Is this an actual problem that you have seen in the real world?
>
> Thanks,
> Richard

No, I have not observed this on real hardware. I found both issues by
code inspection. The probe error path has a definite resource leak, while
the concurrent probe/remove path has a potential race. I have not
reproduced the latter.

Thanks,
Xuanqiang