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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 E1191C4167B for ; Fri, 4 Dec 2020 12:59:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B545522AAD for ; Fri, 4 Dec 2020 12:59:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388208AbgLDM6r (ORCPT ); Fri, 4 Dec 2020 07:58:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:58176 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730240AbgLDM6r (ORCPT ); Fri, 4 Dec 2020 07:58:47 -0500 Date: Fri, 4 Dec 2020 13:59:22 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1607086686; bh=T9P6YNvJNBVRp2cBN+iSfyjc2OXEDnJ1F6QbORkDUkI=; h=From:To:Cc:Subject:References:In-Reply-To:From; b=1rOdLUSAyMehMfxu0QGULg7JLrQns9N5Zo8xqMs7B3V9pgcgSrLGxWnbJrmlen4Aq QI9NONPyOonqGM2MxkVNx8AtsibYsF0xqfAWR6VnVyK07RbeYrayQFi8D1/Fxdx6T/ Z0hJEsI+dQSG0BVPDXg04jlUW3cr4PdtSryjxgZY= From: Greg KH To: Leon Romanovsky Cc: Dan Williams , broonie@kernel.org, lgirdwood@gmail.com, davem@davemloft.net, kuba@kernel.org, jgg@nvidia.com, Kiran Patil , Ranjani Sridharan , Fred Oh , Dave Ertman , Pierre-Louis Bossart , Shiraz Saleem , Parav Pandit , Martin Habets , linux-rdma@vger.kernel.org, netdev@vger.kernel.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: Re: [resend/standalone PATCH v4] Add auxiliary bus support Message-ID: References: <160695681289.505290.8978295443574440604.stgit@dwillia2-desk3.amr.corp.intel.com> <20201204123207.GH16543@unreal> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201204123207.GH16543@unreal> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Fri, Dec 04, 2020 at 02:32:07PM +0200, Leon Romanovsky wrote: > On Fri, Dec 04, 2020 at 12:42:46PM +0100, Greg KH wrote: > > On Wed, Dec 02, 2020 at 04:54:24PM -0800, Dan Williams wrote: > > > From: Dave Ertman > > > > > > Add support for the Auxiliary Bus, auxiliary_device and auxiliary_driver. > > > It enables drivers to create an auxiliary_device and bind an > > > auxiliary_driver to it. > > > > > > The bus supports probe/remove shutdown and suspend/resume callbacks. > > > Each auxiliary_device has a unique string based id; driver binds to > > > an auxiliary_device based on this id through the bus. > > > > > > Co-developed-by: Kiran Patil > > > Co-developed-by: Ranjani Sridharan > > > Co-developed-by: Fred Oh > > > Co-developed-by: Leon Romanovsky > > > Signed-off-by: Kiran Patil > > > Signed-off-by: Ranjani Sridharan > > > Signed-off-by: Fred Oh > > > Signed-off-by: Leon Romanovsky > > > Signed-off-by: Dave Ertman > > > Reviewed-by: Pierre-Louis Bossart > > > Reviewed-by: Shiraz Saleem > > > Reviewed-by: Parav Pandit > > > Reviewed-by: Dan Williams > > > Reviewed-by: Martin Habets > > > Link: https://lore.kernel.org/r/20201113161859.1775473-2-david.m.ertman@intel.com > > > Signed-off-by: Dan Williams > > > --- > > > This patch is "To:" the maintainers that have a pending backlog of > > > driver updates dependent on this facility, and "Cc:" Greg. Greg, I > > > understand you have asked for more time to fully review this and apply > > > it to driver-core.git, likely for v5.12, but please consider Acking it > > > for v5.11 instead. It looks good to me and several other stakeholders. > > > Namely, stakeholders that have pressure building up behind this facility > > > in particular Mellanox RDMA, but also SOF, Intel Ethernet, and later on > > > Compute Express Link. > > > > > > I will take the blame for the 2 months of silence that made this awkward > > > to take through driver-core.git, but at the same time I do not want to > > > see that communication mistake inconvenience other parties that > > > reasonably thought this was shaping up to land in v5.11. > > > > > > I am willing to host this version at: > > > > > > git://git.kernel.org/pub/scm/linux/kernel/git/djbw/linux tags/auxiliary-bus-for-5.11 > > > > > > ...for all the independent drivers to have a common commit baseline. It > > > is not there yet pending Greg's Ack. > > > > > > For example implementations incorporating this patch, see Dave Ertman's > > > SOF series: > > > > > > https://lore.kernel.org/r/20201113161859.1775473-2-david.m.ertman@intel.com > > > > > > ...and Leon's mlx5 series: > > > > > > http://lore.kernel.org/r/20201026111849.1035786-1-leon@kernel.org > > > > > > PS: Greg I know I promised some review on newcomer patches to help with > > > your queue, unfortunately Intel-internal review is keeping my plate > > > full. Again, I do not want other stakeholder to be waiting on me to > > > resolve that backlog. > > > > Ok, I spent some hours today playing around with this. I wrote up a > > small test-patch for this (how did anyone test this thing???). > > We are running all verifications tests that we have over our > mlx5 driver. It includes devices reloads, power failures, FW > reconfiguration to emulate different devices with and without error > injections and many more. Up till now, no new bugs that are not known > to us were found. Yes, sorry, I was implying that the authors here had to create _some_ code to test this with, it would have been nice to include that as well here. We are collecting more and more in-kernel tests, having one for this code would be nice to also have so we make sure not to break any functionality in the future. thanks, greg k-h