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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ACF34C47DD9 for ; Wed, 28 Feb 2024 12:03:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Bw4ZMjJozQ5YqOJcTt3gKT2Vcee0B19IAYRWRCMPhmw=; b=d8Vf4QPKbjk3h+J9cqFzuleFCF 3jWetYlT7lthwjHG9WQ0OW3/BMDqY/E8ndGXMmlhhsOA6HnSHgJcoEr/spdgi7s8dKvwbk/6Fq4I+ DOOHWzGBwF+qqWJHzg1+DjUcGcHBLxrV7W0JL/jfd63uJt2EKlfI4DLzhjqd0DWL86/QjlZq6aQJk pjD5674q8wQQgn9kQgf7kkecbum2PsUsUsn+cg1hFmXKWoXUS237pUJbWoXUDA5b3eUmBqgF69Omg RD/JNjuDVNPjpKZ4qm54bKYRjCSSDNLkv99KwZr7zhH7fkYeyj1F+oVjrPhn6wFzT0/3+w2sZU/fa 889Qe9JA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfIea-00000009Av9-1NpN; Wed, 28 Feb 2024 12:03:16 +0000 Received: from mgamail.intel.com ([192.198.163.12]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfIeW-00000009AuI-35y4; Wed, 28 Feb 2024 12:03:14 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709121793; x=1740657793; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=MpZ+7FpSdhy1jX1Eb1448QYNsWBInrp8KzudyioVXOg=; b=Qt+O4LpRQMfF6w1FL8+tv+H0Mr8UKsCbJUQsFpp0W4kMNtHsmCK2zVJt 7t7XBnRjGr0mHGLqsthIgh6UNOgVZNlqmcKZA88ERWRgcaMNYuN7oLi0w +3nVKNnubCm0ziCBFVSkpuQjTkyfkudOo7lgEz1AP5RDvxd9EAatqDg/7 D+AhyFXoPzn2yzH21/pfRMAle3sKzkveGPmPsyrAZkO+8gtG+NZMKZTZO UaPCFk8K/TQAZW1DxQDgCz/jQ4MwamUS0igvUXn18mobDmmYoopg36zTc Ec7d3vbHZlWrF8olTwWkTPdxqayIc/KbUwpSmH+WDfAiRFFmKsz+lFf3B g==; X-IronPort-AV: E=McAfee;i="6600,9927,10996"; a="7297426" X-IronPort-AV: E=Sophos;i="6.06,190,1705392000"; d="scan'208";a="7297426" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Feb 2024 04:03:09 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,190,1705392000"; d="scan'208";a="11988943" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Feb 2024 04:03:02 -0800 Received: from kekkonen.localdomain (localhost [127.0.0.1]) by kekkonen.fi.intel.com (Postfix) with SMTP id F167911F855; Wed, 28 Feb 2024 14:02:59 +0200 (EET) Date: Wed, 28 Feb 2024 12:02:59 +0000 From: "sakari.ailus@linux.intel.com" To: Andy Shevchenko Cc: Zhi Mao =?utf-8?B?KOavm+aZuik=?= , "heiko@sntech.de" , "tomi.valkeinen@ideasonboard.com" , "robh+dt@kernel.org" , "yunkec@chromium.org" , "linux-kernel@vger.kernel.org" , "dan.scally@ideasonboard.com" , "gerald.loacker@wolfvision.net" , Shengnan Wang =?utf-8?B?KOeOi+Wco+eUtyk=?= , "hdegoede@redhat.com" , "linux-media@vger.kernel.org" , "linus.walleij@linaro.org" , "linux-arm-kernel@lists.infradead.org" , Yaya Chang =?utf-8?B?KOW8tembhea4hSk=?= , "mchehab@kernel.org" , "jacopo.mondi@ideasonboard.com" , "jernej.skrabec@gmail.com" , "linux-mediatek@lists.infradead.org" , "bingbu.cao@intel.com" , Project_Global_Chrome_Upstream_Group , "10572168@qq.com" <10572168@qq.com>, "conor+dt@kernel.org" , "hverkuil-cisco@xs4all.nl" , "krzysztof.kozlowski+dt@linaro.org" , "matthias.bgg@gmail.com" , "laurent.pinchart@ideasonboard.com" , "devicetree@vger.kernel.org" , "angelogioacchino.delregno@collabora.com" , "macromorgan@hotmail.com" Subject: Re: [PATCH v6 2/2] media: i2c: Add GC08A3 image sensor driver Message-ID: References: <20240227013221.21512-1-zhi.mao@mediatek.com> <20240227013221.21512-3-zhi.mao@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240228_040312_843979_A0E8AC49 X-CRM114-Status: GOOD ( 18.38 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Hi Andy, Zhi, On Wed, Feb 28, 2024 at 11:22:13AM +0200, Andy Shevchenko wrote: > > Another, I also reviewed some other sensor driver code(such as > > gc0a08/gc2145 and imx/ov), they are all the same. > > They are also problematic. So what? The situation is the same in a large number of drivers, also outside the media tree. It's also not trivial to figure out which header should be included and it tends to be that if it compiles without warnings, developers won't bother trying to figure out what should still be changed. I wonder if this could be automated by using the C pre-processor and a small Perl script. :-) > > Can we keep this coding style and follow with most of those > > image sensor driver? > > Why? We do NOT want to continue developers to avoid decreasing their > technical debts. I agree. People tend to copy the code from existing drivers and argue "it's just a driver, why bother?". That code will be soon found in a dozen other new driver patchsets and every time must brought up in review and fixed, leading to extra work for reviewers and developers. We've had quite a lot of work improving the current (sensor etc.) drivers and fixing up the use of bad patterns but this area has so far received little attention. -- Regards, Sakari Ailus