linux-kernel - Re: [net-next PATCH v3 05/11] net: pcs: lynx: Convert to an MDIO driver

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Message-ID: <39753b36-adfd-4e00-beea-b58c1e5606e3@linux.dev>
Date: Tue, 6 May 2025 18:39:43 -0400
From: Sean Anderson <sean.anderson@...ux.dev>
To: Vladimir Oltean <vladimir.oltean@....com>
Cc: netdev@...r.kernel.org, Andrew Lunn <andrew+netdev@...n.ch>,
 "David S . Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Russell King <linux@...linux.org.uk>,
 upstream@...oha.com, Christian Marangi <ansuelsmth@...il.com>,
 linux-kernel@...r.kernel.org, Kory Maincent <kory.maincent@...tlin.com>,
 Heiner Kallweit <hkallweit1@...il.com>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Clark Wang <xiaoning.wang@....com>, Claudiu Manoil <claudiu.manoil@....com>,
 Ioana Ciornei <ioana.ciornei@....com>, Joyce Ooi <joyce.ooi@...el.com>,
 Madalin Bucur <madalin.bucur@....com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>, UNGLinuxDriver@...rochip.com,
 Wei Fang <wei.fang@....com>, imx@...ts.linux.dev,
 linux-stm32@...md-mailman.stormreply.com
Subject: Re: [net-next PATCH v3 05/11] net: pcs: lynx: Convert to an MDIO
 driver

On 5/6/25 18:29, Vladimir Oltean wrote:
> On Tue, May 06, 2025 at 06:20:32PM -0400, Sean Anderson wrote:
>> On 5/6/25 18:18, Vladimir Oltean wrote:
>> > On Tue, May 06, 2025 at 06:03:35PM -0400, Sean Anderson wrote:
>> >> On 5/6/25 17:58, Vladimir Oltean wrote:
>> >> > Hello Sean,
>> >> > 
>> >> > On Tue, Apr 15, 2025 at 03:33:17PM -0400, Sean Anderson wrote:
>> >> >> diff --git a/drivers/net/pcs/pcs-lynx.c b/drivers/net/pcs/pcs-lynx.c
>> >> >> index 23b40e9eacbb..bacba1dd52e2 100644
>> >> >> --- a/drivers/net/pcs/pcs-lynx.c
>> >> >> +++ b/drivers/net/pcs/pcs-lynx.c
>> >> >> @@ -1,11 +1,15 @@
>> >> >> -// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
>> >> >> -/* Copyright 2020 NXP
>> >> >> +// SPDX-License-Identifier: GPL-2.0+
>> >> >> +/* Copyright (C) 2022 Sean Anderson <seanga2@...il.com>
>> >> >> + * Copyright 2020 NXP
>> >> >>   * Lynx PCS MDIO helpers
>> >> >>   */
>> >> >>  
>> >> >> -MODULE_DESCRIPTION("NXP Lynx PCS phylink library");
>> >> >> -MODULE_LICENSE("Dual BSD/GPL");
>> >> >> +MODULE_DESCRIPTION("NXP Lynx PCS phylink driver");
>> >> >> +MODULE_LICENSE("GPL");
>> >> > 
>> >> > What's the idea with the license change for this code?
>> >> 
>> >> I would like to license my contributions under the GPL in order to
>> >> ensure that they remain free software.
>> >> 
>> >> --Sean
>> > 
>> > But in the process, you are relicensing code which is not yours.
>> > Do you have agreement from the copyright owners of this file that the
>> > license can be changed?
>> 
>> I'm not relicensing anything. It's already (GPL OR BSD-3-Clause). I'm
>> just choosing not to license my contributions under BSD-3-Clause.
>> 
>> --Sean
> 
> You will need to explain that better, because what I see is that the
> "BSD-3-Clause" portion of the license has disappeared and that applies
> file-wide, not just to your contribution.

But I also have the option to just use the GPL-2.0+ license. When you
have an SPDX like (GPL-2.0+ OR BSD-3-Clause) that means the authors gave
permission to relicense it as

- BSD-3-Clause
- GPL-2.0+
- GPL-2.0+ OR BSD-3-Clause
- GPL-2.0
- GPL-2.0 OR BSD-3-Clause
- GPL-3.0
- GPL-3.0 OR BSD-3-Clause
- GPL-4.0 (if it ever happens)

I want my contributions to remain free software, so I don't want to
allow someone to take the BSD-3-Clause option (without the GPL).

--Sean