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[209.132.180.67]) by mx.google.com with ESMTP id 64-v6si981163pld.465.2018.02.07.04.01.21; Wed, 07 Feb 2018 04:01:48 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753872AbeBGMAb (ORCPT + 99 others); Wed, 7 Feb 2018 07:00:31 -0500 Received: from lb3-smtp-cloud8.xs4all.net ([194.109.24.29]:50914 "EHLO lb3-smtp-cloud8.xs4all.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753738AbeBGMA3 (ORCPT ); Wed, 7 Feb 2018 07:00:29 -0500 Received: from [IPv6:2001:420:44c1:2579:1c80:fbf5:ce1c:2bda] ([IPv6:2001:420:44c1:2579:1c80:fbf5:ce1c:2bda]) by smtp-cloud8.xs4all.net with ESMTPA id jOOles3BSar0wjOOpejXCT; Wed, 07 Feb 2018 13:00:27 +0100 Subject: Re: [PATCH v5 03/16] media: rkisp1: Add user space ABI definitions To: Shunqian Zheng , linux-rockchip@lists.infradead.org, linux-media@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, mchehab@kernel.org, sakari.ailus@linux.intel.com, hans.verkuil@cisco.com, tfiga@chromium.org, laurent.pinchart@ideasonboard.com, zyc@rock-chips.com, eddie.cai.linux@gmail.com, jeffy.chen@rock-chips.com, allon.huang@rock-chips.com, devicetree@vger.kernel.org, heiko@sntech.de, robh+dt@kernel.org, Joao.Pinto@synopsys.com, Luis.Oliveira@synopsys.com, Jose.Abreu@synopsys.com, jacob2.chen@rock-chips.com References: <1514533978-20408-1-git-send-email-zhengsq@rock-chips.com> <1514533978-20408-4-git-send-email-zhengsq@rock-chips.com> From: Hans Verkuil Message-ID: Date: Wed, 7 Feb 2018 13:00:23 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <1514533978-20408-4-git-send-email-zhengsq@rock-chips.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-CMAE-Envelope: MS4wfA/FUoZR2t9WIs/+q42pocHGYxK03AevDX76RIMXgF1QcoEAeiI5KYf+oqFPvwDraXrdXHFH4ia/YRkX1H/8nBJWfRry89vVUkhNBJPBQygJfbNCmFdu rAWM9rSh+VuAKfS9sPOQMo7C6ZBeD+t2pLBF51Jg9XA/ohzDqvI0VbistdSTab1J+GCiqm9l4FqpYjfK/RWUGc7zPLVmANAQQvNI3Rw0NhWBc21tUSubDPzy uPqQk4fRl2Xkr1JIW1M9V0lLS6giFHStEd1HZwzkZ+w5y85YtTmdNjeFQQbYrVaNwMxa5XKgOwFtR846gmwEXQcMzpMyIsHUHKOjGqPV+DEqXss3hMcZr6Vu ti6lVFa2bJhr//VuG9xcHn8BoTV+R07eJOQLvV3NFanEff5ENkAynBnjv3gnHIMyBKirMjyROSnkLVjf92vVPEN9mBH2zGhlE28bi6hTocL1yhCJBsDWaD9q R2EX2o1Zg+UgTeaHUGeV1KCzTsa0FIs7txQ+MMbr7O+0uQOHuEDeEmvWvFedv1Ee+NmoG/Jn1ErT/3TjEMyWG9w5YcliclQOaS3IxHKNm6HWHUeFiIEBFHON FVEjgsB/ycGxk3FIBOMxigiCKbre6zo9yud7n2gfyZ9XOyrwjZCYTZ7OCDKMwRJ0Ku/UOSJDdjazGsBRNoaU/BEaF/ELEduAkWjNMWEJAmq2AqvMm/VdsTZX 4Fo8VJyi/YzVXdAgaGKN/GrRpsoKClFddEJTFh6+QLzqGoQ+nCavTk/Ui3xoTAFUZIfDciThONlKaDjgLzVXyzEvA82S0l1ty1tLZU16TNUR9Dzc0EWijsn4 TWopvHqseFbeOsgPmRgP8SsHx0tMCim7pIpUJCJU4HzEjPZRczQ+bvEs1VmxLnCGE0Hkm1uLKnZaky6tUkSY0y/jV2UhVZCBd/zZHBu2nc3QaIvX8c35s7qz 4z8RzGTrf5LnPl+bsj/8KkgqJRo= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/29/17 08:52, Shunqian Zheng wrote: > From: Jeffy Chen > > Add the header for userspace General note: I saw four cases where this documentation referred to the datasheet. Three comments on that: 1) You don't say which datasheet. 2) I assume the datasheet is under NDA? 3) You do need to give enough information so a reasonable default can be used. I mentioned in an earlier review that creating an initial params struct that can be used as a templete would be helpful (or even required), and that would be a good place to put such defaults. Regards, Hans