Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp367476pxb; Tue, 9 Feb 2021 02:24:19 -0800 (PST) X-Google-Smtp-Source: ABdhPJxIYbTuSGtKnzElD4QmYCbc9UCfAV2nURcHog9CBVg9A3j9Rp48PHmvlpJ8faGm2S0a2/GR X-Received: by 2002:a17:906:4013:: with SMTP id v19mr21631057ejj.5.1612866259429; Tue, 09 Feb 2021 02:24:19 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1612866259; cv=none; d=google.com; s=arc-20160816; b=y5mTRM0QhAAm7tKfX+/c7NbukMWLMS9EJYor+fYFP5yd11C9bZbA7GOzEvPwbrux53 rmR0MlR0qfP34vqDHwrIXqFMNGzfwGk9UPcWHp0E5nA6oR7hXa2cvTCsrQUXSMWxBDWb 7UDuabNPrFe5IBUPKDZWkpoAo/2iq3bri2B71h6s0CNwoCMtoZVCpYo+XI9FTAoE5guy dQFk6zM/ZVTyn4S/oxSRgjl2i1jYiJWoQhs6FY9LRtvEXv/QzXMURY5VSOpB54iNAo2c 926tpLYWehRWoC3Xlr9Iiy6yS2NNEVYgDdV+S745aW1hZJI7GiPKz0pgtYYcs27mmRfK PThA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:organization:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :ironport-sdr:ironport-sdr; bh=34SrvocJPqLEAmuhl4VA89eoHqaXwuFc46G89UICDN4=; b=oM602J1niethtb+iql3UnGEQ41d0qirolhDmkeNqVUwAmg9Siymj2xIyPTBNTa5Urs NXwtvXLvCGTftxqffIYGMPQLdiL2/xXXOaNgLKlkrxWLYV/84j4uGJ2yT7TUHkK/adaI nSLiUhQIR5hknKoTD2AU60vn5iBlwezz7PzyMt0q7Mnnlq6L309RpgsjMdKjuw20P7d3 P0PX1f/Oq8ci6bFrSs3UWEQlB4WRqzI/xfU2iF9afMa4i82hLhOPD8JRRvZHMNNlt6zt ko5gPrU3TeHbBxI7isBsJgZZ725ZcVc/XNZ3GWKyf8pvW+3iNniCTFsYIzNfiD+M1d2/ Ra9Q== 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 o34si12801689eda.345.2021.02.09.02.23.55; Tue, 09 Feb 2021 02:24:19 -0800 (PST) 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 S230294AbhBIKUI (ORCPT + 99 others); Tue, 9 Feb 2021 05:20:08 -0500 Received: from mga11.intel.com ([192.55.52.93]:42487 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230380AbhBIKDs (ORCPT ); Tue, 9 Feb 2021 05:03:48 -0500 IronPort-SDR: DhoDtesRw3tsUc+we5MZ3EGR2F2ds7Jb+0XI4OnZ8T7ULahT4sWs86LEesfYsOfydXcqGIxuzo 0d95hWXXnsVQ== X-IronPort-AV: E=McAfee;i="6000,8403,9889"; a="178346526" X-IronPort-AV: E=Sophos;i="5.81,164,1610438400"; d="scan'208";a="178346526" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Feb 2021 02:01:57 -0800 IronPort-SDR: rnhFjJZUyagX9l6NkVSwVAXDoAYjA0WCGcS4e8PMLA+skaUN9neEPOnOysaFZHrDDu8mqtWyRN FM7iNXXX6yxQ== X-IronPort-AV: E=Sophos;i="5.81,164,1610438400"; d="scan'208";a="509823432" Received: from smile.fi.intel.com (HELO smile) ([10.237.68.40]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Feb 2021 02:01:54 -0800 Received: from andy by smile with local (Exim 4.94) (envelope-from ) id 1l9PqA-003BrA-CZ; Tue, 09 Feb 2021 12:01:50 +0200 Date: Tue, 9 Feb 2021 12:01:50 +0200 From: Andy Shevchenko To: Sakari Ailus Cc: Linux Kernel Mailing List , Linux Media Mailing List , Petr Mladek , Dave Stevenson , dri-devel , Hans Verkuil , Laurent Pinchart , Mauro Carvalho Chehab , Sergey Senozhatsky , Steven Rostedt , Joe Perches , Jani Nikula , Rasmus Villemoes Subject: Re: [PATCH v6 1/3] lib/vsprintf: Add support for printing V4L2 and DRM fourccs Message-ID: References: <20210208200903.28084-1-sakari.ailus@linux.intel.com> <20210208200903.28084-2-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 08, 2021 at 10:58:55PM +0200, Andy Shevchenko wrote: > On Mon, Feb 08, 2021 at 10:43:30PM +0200, Andy Shevchenko wrote: > > On Mon, Feb 8, 2021 at 10:11 PM Sakari Ailus > > wrote: ... > __le32 val; > > val = cpu_to_le32(*fourcc & ~BIT(31)); > > p += string_escape_mem(&val, sizeof(*fourcc), output, sizeof(output), ESCAPE_NP | ESCAPE_HEX, NULL); sizeof(val) and as we are discussing in parallel emails something like skip_trailing_spaces() to be applied after above. The rationale of the above, that we reuse existing code and existing standard for the escaping non-printable characters. -- With Best Regards, Andy Shevchenko