Re: [PATCH net] net: dsa: microchip: fix KSZ8765 fiber detection

["Sébastien Royen" <sebastien.royen@armadeus.com>]

Le 06/10/2026 à 16:20, netdev-bot+sinfo@kernel.org a écrit :
> Hi!
>
> This is an automated message. This series looks like a fix, but its
> commit messages seem to be missing some information:
>
>   - How the issue was discovered, e.g. hit in production, hit during
>     development, syzbot report, manual code inspection, LLM or static
>     analysis tool scan.
>
>   - Whether the issue was actually triggered, or is only theoretical
>     (e.g. found by code inspection). If it was triggered please include
>     the symptoms, like the stack trace or error messages.
>
> Please do not repost the series just to address the above. Instead,
> reply to this email with the missing information, so that reviewers
> can take it into account. If the series needs another revision for
> other reasons, please include the information in the commit messages
> then.
>
> The evaluation is done by an LLM so it may be wrong, if you think
> that is the case please reply and explain.

Hi,

This issue was discovered when upgrading an embedded device from kernel 5.10 to 6.16.

The device was using a KSZ8765 device tree configuration and the
corresponding hardware, but during boot the kernel incorrectly detected
it as a KSZ8795.

The issue was reproduced during testing. The relevant boot messages were:

     ksz-switch spi0.0: found switch: KSZ8795, rev 0
     ksz-switch spi0.0: Device tree specifies chip KSZ8765 but found KSZ8795, please fix it!

The fix was then tested manually.

Thanks,