Received: by 2002:a05:6a10:eb17:0:0:0:0 with SMTP id hx23csp111134pxb; Tue, 7 Sep 2021 19:14:16 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxcotHFR4mCiT/5vYgB8fAjGG3fYp8/ZupaT3gz5aSQfma8DFJLIR8P5yRFFAoJOy/F4h43 X-Received: by 2002:aa7:c884:: with SMTP id p4mr1339580eds.203.1631067256169; Tue, 07 Sep 2021 19:14:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1631067256; cv=none; d=google.com; s=arc-20160816; b=mXtSeAEeoQLTnb7tDL6/yuFwRO4Bh83gMM1nPobh1XAaYh3dqWXFrKh0s9x9G7YeZ8 y4EaEyKBVuWhYx+D0fSO0QdDF9D1Z4IJO4FWYt6oklK73wmj3DGp+4wit7fysdHKOQMR bYanwIeAJcj5KsAXQ4R5G/IGxsgYVFTNauY73KVY305awab/ihCxKlcSl5TVyO+95bKq pTzPDPYg25knaR92k2/G1qxhGdMWvPkMOVMZjtPH+IH15+Tig0k76w3ISfiaQEpaYM2Z VJZqNXyyLefStxi2RudpKuhqp7VqPDahMyUfA49mHOkeSKvrpneTZ9teb7UblVZhIyNJ YxXA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-language:content-transfer-encoding :in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject; bh=7TxvHrJcMX4Gq6+zZ5UwaryUAo/Fa1/78AlLLb2YQDw=; b=IN6RdlsnCSWBx4il4+HWAiXp/cc+gYXxi0j5RirOCQXFwUWgl+ZjX7bOiqiWBWKgkl TIDhbg1rfZ/gemGLCS93Jgrs9KfrjNhkyLXUYNzOSCPQiO7UTjiXNVnzgE8m5Lh3CfJh so+dDnVbjLPGZMYOQ4NHRxdzF1SMKA424FmpIjB0qNWe74BN1y44AZT2SWJvvrYD9HHh g2AmaqschQ58GUkQfRmHUa0ZUcNf3YihYViOF23DENnCTqVtWM2Ayo12TTx0kAkV/WmF wBWbHk9ml4rbQS6noQPPkH4JssXfRXBqixRylGUk7Dy2vL26h4QqyDHnLPcWbsx8vo61 bdFg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id o21si810271edr.421.2021.09.07.19.13.52; Tue, 07 Sep 2021 19:14:16 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347049AbhIHCIo (ORCPT + 99 others); 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-kernel@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 ?