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, xuanqiang.luo@linux.dev wrote:

quoted

From: Xuanqiang Luo <redacted>

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