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=-7.6 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 DE4AFC433EF for ; Wed, 8 Sep 2021 02:07:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B90E76115A for ; Wed, 8 Sep 2021 02:07:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347034AbhIHCIo (ORCPT ); Tue, 7 Sep 2021 22:08:44 -0400 Received: from mga05.intel.com ([192.55.52.43]:47820 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347006AbhIHCIn (ORCPT ); Tue, 7 Sep 2021 22:08:43 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10100"; a="305919228" X-IronPort-AV: E=Sophos;i="5.85,276,1624345200"; d="scan'208";a="305919228" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Sep 2021 19:07:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,276,1624345200"; d="scan'208";a="503324076" Received: from dengjie-mobl1.ccr.corp.intel.com (HELO [10.239.154.46]) ([10.239.154.46]) by fmsmga008.fm.intel.com with ESMTP; 07 Sep 2021 19:07:30 -0700 Subject: Re: [PATCH v14] i2c: virtio: add a virtio i2c frontend driver To: Viresh Kumar , "Michael S. Tsirkin" Cc: linux-i2c@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, wsa@kernel.org, wsa+renesas@sang-engineering.com, arnd@arndb.de, jasowang@redhat.com, andriy.shevchenko@linux.intel.com, yu1.wang@intel.com, shuo.a.liu@intel.com, conghui.chen@intel.com, stefanha@redhat.com, gregkh@linuxfoundation.org References: <984ebecaf697058eb73389ed14ead9dd6d38fb53.1625796246.git.jie.deng@intel.com> <20210904160059-mutt-send-email-mst@kernel.org> <20210906044307.se4dcld2wlblieyv@vireshk-i7> From: Jie Deng Message-ID: <5bb91030-c4be-a3c1-fe25-337999348e9a@intel.com> Date: Wed, 8 Sep 2021 10:07:29 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20210906044307.se4dcld2wlblieyv@vireshk-i7> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org On 2021/9/6 12:43, Viresh Kumar wrote: > >> Let's let the dust settle on them then, then >> resubmit? > It doesn't break anything for now since we don't have much users and > we know zero length transfers don't work. I will submit the necessary > changes once spec is finalized. Agree. The currently merged spec and driver are consistent. We can support zero length request once the following spec change is accepted. [PATCH V3] virtio: i2c: Allow zero-length transactions (https://lists.oasis-open.org/archives/virtio-dev/202109/msg00004.html) So, can we start a ballot for this new feature ?