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 2784DC433F5 for ; Tue, 28 Sep 2021 06:00:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0ABDA6108F for ; Tue, 28 Sep 2021 06:00:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239170AbhI1GB3 (ORCPT ); Tue, 28 Sep 2021 02:01:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:48780 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238978AbhI1F7b (ORCPT ); Tue, 28 Sep 2021 01:59:31 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 301A261353; Tue, 28 Sep 2021 05:56:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632808618; bh=wFYGAkwb4/WUJWCk1IRMUqwJzEIWLJ7Jffepp7pbjqQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Les5pIBIiXmeptNewofLvTvRlsNuIF1akK9KdfjU4H63smOFDU/ijYmjCz0lJP3wf LMqvgYa6N9INH9jtyHrsDxqMjy4539czIp5Dk36xX6rR1ocscATaksbu5Ndku7ilj9 yHQU7MD01Wx1UzNMV3tw0/79P0fWFmFWvnpe0GHPQz3aEUvkT5V+05RVt5KwhuT0rC UvWrQE9pfqMz1soKC5UgtLr5dCJZC5idWuOZYe/Fd4AnuJ8xNu8OeWMfkW1+uUWLBj vwOs5iMZgtcigolj6ZiAzMzk4Y54yBC0M5V9oabgTyOEtlYO8zK4cALWzCYkEQOEwu xU403oXZ17vjQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Shuah Khan , Paolo Bonzini , Sasha Levin , shuah@kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH AUTOSEL 5.10 16/23] selftests:kvm: fix get_warnings_count() ignoring fscanf() return warn Date: Tue, 28 Sep 2021 01:56:37 -0400 Message-Id: <20210928055645.172544-16-sashal@kernel.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210928055645.172544-1-sashal@kernel.org> References: <20210928055645.172544-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore 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