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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 084FFC433EF for ; Fri, 8 Oct 2021 11:37:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E250660E95 for ; Fri, 8 Oct 2021 11:37:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242178AbhJHLjl (ORCPT ); Fri, 8 Oct 2021 07:39:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:59490 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242672AbhJHLgI (ORCPT ); Fri, 8 Oct 2021 07:36:08 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9766B6121F; Fri, 8 Oct 2021 11:32:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1633692741; bh=wFYGAkwb4/WUJWCk1IRMUqwJzEIWLJ7Jffepp7pbjqQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UpLFIzHOZIUtrtCg9Aqhzdb/TtgUzkHdHhpADVsDMDRntxS+FlRJHt0xsJnxSVbJj SL2P7o5Uzp6fFHgvwVIyXim6bMeLORl27WqwagPYlsckqjZ/j6Jma2MjdzBVWXFXxF cvczdzLC5O5og+yz5XZrY8Sm5fnc828H8JK7XyqI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Shuah Khan , Paolo Bonzini , Sasha Levin Subject: [PATCH 5.14 23/48] selftests:kvm: fix get_warnings_count() ignoring fscanf() return warn Date: Fri, 8 Oct 2021 13:27:59 +0200 Message-Id: <20211008112720.793084766@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211008112720.008415452@linuxfoundation.org> References: <20211008112720.008415452@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shuah Khan [ Upstream commit 39a71f712d8a13728febd8f3cb3f6db7e1fa7221 ] Fix get_warnings_count() to check fscanf() return value to get rid of the following warning: x86_64/mmio_warning_test.c: In function ‘get_warnings_count’: x86_64/mmio_warning_test.c:85:2: warning: ignoring return value of ‘fscanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 85 | fscanf(f, "%d", &warnings); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Shuah Khan Acked-by: Paolo Bonzini Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin --- tools/testing/selftests/kvm/x86_64/mmio_warning_test.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c b/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c index e6480fd5c4bd..8039e1eff938 100644 --- a/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c +++ b/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c @@ -82,7 +82,8 @@ int get_warnings_count(void) FILE *f; f = popen("dmesg | grep \"WARNING:\" | wc -l", "r"); - fscanf(f, "%d", &warnings); + if (fscanf(f, "%d", &warnings) < 1) + warnings = 0; fclose(f); return warnings; -- 2.33.0