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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21414C43381 for ; Fri, 15 Feb 2019 02:33:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D968F20840 for ; Fri, 15 Feb 2019 02:33:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550198014; bh=PPcq0NoDP+MltGyd+PyfI2fMVaVNCxi/PSdZHVyrOYs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ePRklTImHJGhKudN7xkFbEBKqbrArwGLx2zS8kL5hAPG10W2FnO1xmgmkrSRZ8J08 p11bDiI4HaRAbDNPoZNavarn52vwUX2bXAj8MhVtQBQ7q6yckLz9yesHW33Iqp5vGW OS+yGFxpUnGNblmfi76KoiajZeYi56UQ/yG31MFI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388491AbfBOCdc (ORCPT ); Thu, 14 Feb 2019 21:33:32 -0500 Received: from mail.kernel.org ([198.145.29.99]:51990 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389268AbfBOCL6 (ORCPT ); Thu, 14 Feb 2019 21:11:58 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9EB7321B68; Fri, 15 Feb 2019 02:11:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550196717; bh=PPcq0NoDP+MltGyd+PyfI2fMVaVNCxi/PSdZHVyrOYs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xcsEBsSCdlRpylc/KTSsM8x9ePPAEhvBdxZZcLUhmGXGEjGBKFKcBmMlq1rzoiOpM MBFdS7pufTu4iUqPzVQVxR/6Ht1FQDThEetvrBQdkVywOQo+IZau6htZnts+DG7nd/ 0PPskQanFntKLhdmEeML/aTrfMEOxU/RrqUucbcg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Geert Uytterhoeven , Shuah Khan , Sasha Levin , linux-gpio@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 23/65] selftests: gpio-mockup-chardev: Check asprintf() for error Date: Thu, 14 Feb 2019 21:10:39 -0500 Message-Id: <20190215021121.177674-23-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190215021121.177674-1-sashal@kernel.org> References: <20190215021121.177674-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Geert Uytterhoeven [ Upstream commit 508cacd7da6659ae7b7bdd0a335f675422277758 ] With gcc 7.3.0: gpio-mockup-chardev.c: In function ‘get_debugfs’: gpio-mockup-chardev.c:62:3: warning: ignoring return value of ‘asprintf’, declared with attribute warn_unused_result [-Wunused-result] asprintf(path, "%s/gpio", mnt_fs_get_target(fs)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Handle asprintf() failures to fix this. Signed-off-by: Geert Uytterhoeven Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin --- tools/testing/selftests/gpio/gpio-mockup-chardev.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/gpio/gpio-mockup-chardev.c b/tools/testing/selftests/gpio/gpio-mockup-chardev.c index f8d468f54e98..aaa1e9f083c3 100644 --- a/tools/testing/selftests/gpio/gpio-mockup-chardev.c +++ b/tools/testing/selftests/gpio/gpio-mockup-chardev.c @@ -37,7 +37,7 @@ static int get_debugfs(char **path) struct libmnt_table *tb; struct libmnt_iter *itr = NULL; struct libmnt_fs *fs; - int found = 0; + int found = 0, ret; cxt = mnt_new_context(); if (!cxt) @@ -58,8 +58,11 @@ static int get_debugfs(char **path) break; } } - if (found) - asprintf(path, "%s/gpio", mnt_fs_get_target(fs)); + if (found) { + ret = asprintf(path, "%s/gpio", mnt_fs_get_target(fs)); + if (ret < 0) + err(EXIT_FAILURE, "failed to format string"); + } mnt_free_iter(itr); mnt_free_context(cxt); -- 2.19.1