From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 033FEC43381 for ; Mon, 11 Mar 2019 17:26:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD66B214AE for ; Mon, 11 Mar 2019 17:26:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728062AbfCKRZ7 (ORCPT ); Mon, 11 Mar 2019 13:25:59 -0400 Received: from mx2.suse.de ([195.135.220.15]:35802 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727641AbfCKRZ7 (ORCPT ); Mon, 11 Mar 2019 13:25:59 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 9D8C8AFDF; Mon, 11 Mar 2019 17:25:57 +0000 (UTC) Subject: Re: [PATCH v8 0/6] Add Fieldbus subsystem + support HMS Profinet card To: Sven Van Asbroeck Cc: Greg KH , robh+dt@kernel.org, Linus Walleij , Lee Jones , mark.rutland@arm.com, treding@nvidia.com, David Lechner , noralf@tronnes.org, johan@kernel.org, Michal Simek , michal.vokac@ysoft.com, Arnd Bergmann , john.garry@huawei.com, geert+renesas@glider.be, robin.murphy@arm.com, Paul Gortmaker , sebastien.bourdelin@savoirfairelinux.com, icenowy@aosc.io, Stuart Yoder , maxime.ripard@bootlin.com, Linux Kernel Mailing List References: <20190124201251.15159-1-TheSven73@googlemail.com> <20190208121916.GE23483@kroah.com> <20190208141400.GA22162@kroah.com> From: =?UTF-8?Q?Andreas_F=c3=a4rber?= Openpgp: preference=signencrypt Organization: SUSE Linux GmbH Message-ID: Date: Mon, 11 Mar 2019 18:25:56 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 11.03.19 um 18:02 schrieb Sven Van Asbroeck: > On Fri, Feb 8, 2019 at 9:14 AM Greg KH wrote: >> >> Well, who wants this code? Who uses it? Find those people and get them >> to review it. If no one wants it or uses it, that kind of implies that >> it's not needed :) > > We have customers who (will) talk to this ABI from userspace, but they are > not 'Linux-y' enough to come to the mailing list and meaningfully review > the userspace ABI. > > IMHO the current reality of Fieldbus on Linux is companies rolling their own > proprietary out-of-tree interfaces and drivers. They do this partly because > there is no existing community or infrastructure. So there is no incentive > to be involved with mainline, which could also explain why no-one is commenting > on this Fieldbus ABI. > > Chicken-and-egg problem ? > > Greg, could I convince you to take this Fieldbus subsystem in drivers/staging? > Perhaps its presence may kickstart or seed a Linux Fieldbus community. > Being in staging/ also means that we can tweak the userspace ABI to our > heart's content if more people/requirements come in. > > If there's been no meaningful activity in, say, one year from now, you may > decide to send this whole subsystem to /dev/null. I have two unfinished drivers that might benefit, for Hilscher netX 52 (multi-protocol) and Microchip LAN9252 (EtherCAT), as well as a Linux port for Infineon XMC4500 that might be expanded to XMC4800 (EtherCAT). But currently -ENOTIME for review or development, sorry. Staging sounds like a plan, if that allows us to still break the ABI. Can't make any guarantees whether I might get to them within one year, as my LoRa project has been turning into a Black Hole. ;) Are you at Netdev 0x13 later this month? That might be an opportunity to discuss the network-related parts such as Profinet and EtherCAT. Cheers, Andreas https://github.com/afaerber/netx-module https://github.com/afaerber/lan9252-module -- SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg)