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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 9E277C07E9C for ; Sat, 10 Jul 2021 02:20:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8834B613BE for ; Sat, 10 Jul 2021 02:20:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231952AbhGJCXS (ORCPT ); Fri, 9 Jul 2021 22:23:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:37906 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232544AbhGJCWG (ORCPT ); Fri, 9 Jul 2021 22:22:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E930B61402; Sat, 10 Jul 2021 02:19:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625883560; bh=CTqiA0nCJ1PAXq3EDSd5kAAfEFa48FGUGn2VsY6ulMs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SNfgpv2NhGPIUaexNoRRK8tw7nGQDuU+PlT6tT8ESU3NW9F9uJmWsyJ9SksnYepek asbNwfqDTsT1KkIwf5ki1Xjh5L8bSqneP9Mq0HfymL0tSiR5IJTaTra8WF32kJ5Lue UjZLjK4tBX/5XcalUiuGRRVRtWLc2IP4tT5alkQWwgVgT8Ir6RqDbxY1Uq/NUuWMcM 7iliGbz+dVgjxq5nKXbOwaJytW3/tXS0cpiyrSKd6O2xrzVYQ7XvjrfaqGmliHTojC SK95/6KOO1wDd2ee1S7xkxHYaUsw6mRMFYmJBzBUXfcoNGymF/qbs261X0yLB51w46 kZHt/V9PcKJlw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jaroslav Kysela , Takashi Iwai , Sasha Levin , alsa-devel@alsa-project.org Subject: [PATCH AUTOSEL 5.13 068/114] ALSA: control_led - fix initialization in the mode show callback Date: Fri, 9 Jul 2021 22:17:02 -0400 Message-Id: <20210710021748.3167666-68-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210710021748.3167666-1-sashal@kernel.org> References: <20210710021748.3167666-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jaroslav Kysela [ Upstream commit e381a14c3e3a4e90e293d4eaa5a3ab8ae98b9973 ] The str variable should be always initialized before use even if the switch covers all cases. This is a minimalistic fix: Assign NULL, the sprintf() may print '(null)' if something is corrupted. Signed-off-by: Jaroslav Kysela Link: https://lore.kernel.org/r/20210614071710.1786866-1-perex@perex.cz Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/core/control_led.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/core/control_led.c b/sound/core/control_led.c index a90e31dbde61..ff7fd5e29551 100644 --- a/sound/core/control_led.c +++ b/sound/core/control_led.c @@ -397,7 +397,7 @@ static ssize_t show_mode(struct device *dev, struct device_attribute *attr, char *buf) { struct snd_ctl_led *led = container_of(dev, struct snd_ctl_led, dev); - const char *str; + const char *str = NULL; switch (led->mode) { case MODE_FOLLOW_MUTE: str = "follow-mute"; break; -- 2.30.2