Re: [PATCH net-next v2 3/3] net: mdio: treat PSE EPROBE_DEFER as non-fatal during PHY registration

[Oleksij Rempel]

Hi,

On Fri, Apr 03, 2026 at 03:38:49PM +0200, Kory Maincent wrote:
> On Fri,  3 Apr 2026 15:31:11 +0200
> Carlo Szelinsky <github@xxxxxxxxxxxx> wrote:
> 
> > Hi Andrew,
> > 
> > Thx for helping me! 
> > I thought of keeping the eager path so we still catch broken DT bindings
> > early at boot instead of silently failing later on first ethtool access.
> > But you're right, dropping it would simplify things quite a bit. Do you
> > think that trade-off is worth it? I will follow your lead. 
> 
> On my side I thinks that's a good idea, and I don't see any issue with that for
> now. Oleksij you introduced it here in the first place, is it ok for you?

If I see it correctly - this patch kills all notifications originated
from the PSE core to the users space, until some one calls get/set path
from user space. Means, kernel update may break UAPI behavior of
existing devices.

On other hand, I agree that PSE is not a strickt requirement for PHY
functionality in most cases. At the early stage, as initial PSE support
was introduced, PHYs was kind of representation of the port and related
ethernet interface (needed for LLDP). Are there better methods to solve
it now?

Best Regards,
Oleksij
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