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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7729FC433FE for ; Fri, 30 Sep 2022 13:43:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231518AbiI3Nm6 (ORCPT ); Fri, 30 Sep 2022 09:42:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54148 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229694AbiI3Nm4 (ORCPT ); Fri, 30 Sep 2022 09:42:56 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9E77A13199F for ; Fri, 30 Sep 2022 06:42:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1664545375; x=1696081375; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=j9Azp0LY6MOpjs+1ZdSjiW2WelSy0gG2nxktoO78hdk=; b=jWzWVUbKnlQf9nGjrOHqJDh4hMW8S+N5cpTZuXu2iZgxQUYZbUeTcZJE 1fY8BTDuC4v0WrlGVeU94JCPYgkJXe81qwZxNa9RJ9seNppaFAMOQ1jmV J8KCso2z4aNhdDR+R3TsZAX0uqj/qDDGcr9E/BbWeMZtquK7joPK6yQOM eU0c99bzin7sOq8c6Y5SgQiJmCggNITwQtOLZ4w5CXg0A+TTNt/ZDcFkF ou6Ex03w6qXxqN6W5cyuD8i3q5uUkDw6Kvyp+PMNfeSj7dos7TDNlpcG4 m9OQ1N1cVFfGbDwI0J9OPCZfqL+DvPj6fRkCl6cWEpgAnL2h4s+wzbIbd Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10486"; a="328575482" X-IronPort-AV: E=Sophos;i="5.93,358,1654585200"; d="scan'208";a="328575482" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2022 06:42:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10486"; a="726864753" X-IronPort-AV: E=Sophos;i="5.93,358,1654585200"; d="scan'208";a="726864753" Received: from smile.fi.intel.com ([10.237.72.54]) by fmsmga002.fm.intel.com with ESMTP; 30 Sep 2022 06:42:50 -0700 Received: from andy by smile.fi.intel.com with local (Exim 4.96) (envelope-from ) id 1oeGHw-000WpE-2P; Fri, 30 Sep 2022 16:42:48 +0300 Date: Fri, 30 Sep 2022 16:42:48 +0300 From: Andy Shevchenko To: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= Cc: Petr Mladek , Rasmus Villemoes , linux-kernel@vger.kernel.org, Steven Rostedt , Sergey Senozhatsky , kernel@pengutronix.de Subject: Re: [PATCH] printf: Emit "SUCCESS" if NULL is passed for %pe Message-ID: References: <20220930111050.1296018-1-u.kleine-koenig@pengutronix.de> <20220930132424.wnnrs4bpwiuukclk@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20220930132424.wnnrs4bpwiuukclk@pengutronix.de> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 30, 2022 at 03:24:24PM +0200, Uwe Kleine-König wrote: > On Fri, Sep 30, 2022 at 02:14:16PM +0200, Petr Mladek wrote: > > On Fri 2022-09-30 13:10:50, Uwe Kleine-König wrote: ... > > If get_bla() returns NULL then it means a super fault. It means > > that get_bla() failed and did not know why. > > OK, I think we agree that a function that might return an error pointer > shouldn't return NULL with the semantic "This is also an error." But it neither means "success". -- With Best Regards, Andy Shevchenko