Message-ID: <8477da83-2441-440c-80f1-66dac9700523@kernel.org>
Date: Sat, 24 Jan 2026 08:24:47 +0100
From: "Christophe Leroy (CS GROUP)" <chleroy@...nel.org>
To: Ethan Nelson-Moore <enelsonmoore@...il.com>,
 Bjorn Helgaas <helgaas@...nel.org>
Cc: netdev@...r.kernel.org, linux-doc@...r.kernel.org,
 linux-pci@...r.kernel.org, linux-mips@...r.kernel.org,
 linux-s390@...r.kernel.org, rust-for-linux@...r.kernel.org,
 Jon Mason <jdmason@...zu.us>, Jonathan Corbet <corbet@....net>,
 Linas Vepstas <linasvepstas@...il.com>,
 Mahesh J Salgaonkar <mahesh@...ux.ibm.com>,
 Oliver O'Halloran <oohall@...il.com>, Bjorn Helgaas <bhelgaas@...gle.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Simon Horman <horms@...nel.org>,
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
 Madhavan Srinivasan <maddy@...ux.ibm.com>,
 Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>,
 Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>,
 Alexander Gordeev <agordeev@...ux.ibm.com>,
 Christian Borntraeger <borntraeger@...ux.ibm.com>,
 Sven Schnelle <svens@...ux.ibm.com>, Andrew Lunn <andrew+netdev@...n.ch>,
 Danilo Krummrich <dakr@...nel.org>,
 Krzysztof Wilczyński <kwilczynski@...nel.org>,
 Miguel Ojeda <ojeda@...nel.org>, Boqun Feng <boqun.feng@...il.com>,
 Gary Guo <gary@...yguo.net>, Björn Roy Baron
 <bjorn3_gh@...tonmail.com>, Benno Lossin <lossin@...nel.org>,
 Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>,
 Trevor Gross <tmgross@...ch.edu>, Andrew Morton <akpm@...ux-foundation.org>,
 Martin Kepplinger-Novaković <martink@...teo.de>,
 Pavel Machek <pavel@....cz>, MD Danish Anwar <danishanwar@...com>,
 Mengyuan Lou <mengyuanlou@...-swift.com>,
 Pablo Neira Ayuso <pablo@...filter.org>, Huacai Chen
 <chenhuacai@...nel.org>, Theodore Ts'o <tytso@....edu>,
 Takashi Iwai <tiwai@...e.de>, Eric Biggers <ebiggers@...gle.com>,
 Madadi Vineeth Reddy <vineethr@...ux.ibm.com>,
 Ard Biesheuvel <ardb@...nel.org>,
 "Martin K. Petersen" <martin.petersen@...cle.com>,
 Frederic Barrat <fbarrat@...ux.ibm.com>, Andrew Donnellan
 <ajd@...ux.ibm.com>, Herbert Xu <herbert@...dor.apana.org.au>,
 Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
 Lorenzo Bianconi <lorenzo@...nel.org>, Dong Yibo <dong100@...se.com>,
 Lukas Bulwahn <lukas.bulwahn@...hat.com>,
 Vivian Wang <wangruikang@...as.ac.cn>, Thomas Gleixner <tglx@...nel.org>,
 Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH net-next] net: ethernet: neterion: s2io: remove unused
 driver



Le 24/01/2026 à 03:01, Ethan Nelson-Moore a écrit :
> [Vous ne recevez pas souvent de courriers de enelsonmoore@...il.com. Découvrez pourquoi ceci est important à https://aka.ms/LearnAboutSenderIdentification ]
> 
> On Fri, Jan 23, 2026 at 10:11 AM Bjorn Helgaas <helgaas@...nel.org> wrote:
>> Not sure there's value in removing the IDs from pci_ids.h.  It may
>> lead to unnecessary conflicts later for stable and other backports.
> 
> Patches to remove drivers are generally not backported to stable
> versions, even if the driver is broken, so I don't think this will be
> an issue. There is no point in keeping unused IDs around.

Yes and that's exactly the reason why removing unused IDs will be a problem.

Let's take an exemple: some patch adds PCI_DEVICE_ID_ARECA_1682 after 
PCI_DEVICE_ID_ARECA_1681 in pci_ids.h in the mainline. That patch needs 
to be backported and it conflicts with PCI_VENDOR_ID_S2IO which is not 
anymore in the mainline but is still in stable.

Christophe

Powered by blists - more mailing lists