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Message-ID: <075308b2-7768-40b2-9c00-a5a14df62678@gmail.com>
Date: Wed, 6 Sep 2023 13:37:34 +0200
From: Sergio Callegari <sergio.callegari@...il.com>
To: Bagas Sanjaya <bagasdotme@...il.com>, netdev@...r.kernel.org
Cc: Linux Kernel Mailing list <linux-kernel@...r.kernel.org>,
 Linux Regressions <regressions@...ts.linux.dev>,
 Oliver Neukum <oliver@...kum.org>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: Regression with AX88179A: can't manually set MAC address anymore


On 06/09/2023 03:43, Bagas Sanjaya wrote:
> On Tue, Sep 05, 2023 at 09:34:53PM +0200, Sergio Callegari wrote:
>> I mean that with kernel 5.15 I could use the in-tree module with some
>> glitches (interface occasionally stopping on teleconferencing) as well as
>> the indicated out of tree module with no glitches.
>>
>> With current kernels (certainly from 6.2 on) manually setting a MAC address
>> breaks the interface. Furthermore, even if it compiles and loads fine, it is
>> impossible to use the out of tree module because it does not create the eth
>> device anymore (the eth device now appears with the cdc_ncn module). Being
>> this an out of tree module, this is not very important, though.
> Then can you please file issue against your external module on that
> GH link?

Done, but as mentioned, out-of-tree implementations on GH are less 
interesting than having the in-tree driver working properly.

So if the in-tree driver could be fixed to correctly support the manual 
configuration of the hardware (MAC) address as it used to be that would 
be the best. I hope that Andrew Lunn's hypothesis is correct, and that 
cdc_ncm can be extended to work with AX88179A even when a manual MAC 
addr is configured.

Thanks,

Sergio



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