From patchwork Tue Oct 13 07:10:48 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 7381751 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 4FC94BEEA4 for ; Tue, 13 Oct 2015 07:16:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5E6B820460 for ; Tue, 13 Oct 2015 07:16:15 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 279CC205EC for ; Tue, 13 Oct 2015 07:16:14 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 50456265794; Tue, 13 Oct 2015 09:16:13 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 4646C265611; Tue, 13 Oct 2015 09:13:35 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id C9BE126573C; Tue, 13 Oct 2015 09:13:34 +0200 (CEST) Received: from userp1040.oracle.com (userp1040.oracle.com [156.151.31.81]) by alsa0.perex.cz (Postfix) with ESMTP id E005E265745 for ; Tue, 13 Oct 2015 09:10:59 +0200 (CEST) Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t9D7AvwK029698 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 13 Oct 2015 07:10:58 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserv0022.oracle.com (8.13.8/8.13.8) with ESMTP id t9D7Av8q021592 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Tue, 13 Oct 2015 07:10:57 GMT Received: from abhmp0002.oracle.com (abhmp0002.oracle.com [141.146.116.8]) by aserv0121.oracle.com (8.13.8/8.13.8) with ESMTP id t9D7AvuC027643; Tue, 13 Oct 2015 07:10:57 GMT Received: from mwanda (/154.0.139.178) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 13 Oct 2015 00:10:56 -0700 Date: Tue, 13 Oct 2015 10:10:48 +0300 From: Dan Carpenter To: Liam Girdwood Message-ID: <20151013071048.GG31537@mwanda> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-Source-IP: aserv0022.oracle.com [141.146.126.234] Cc: Krzysztof Kozlowski , Lars-Peter Clausen , Axel Lin , alsa-devel@alsa-project.org, patches@opensource.wolfsonmicro.com, kernel-janitors@vger.kernel.org, Takashi Iwai , Mark Brown , Charles Keepax Subject: [alsa-devel] [patch] ASoC: wm8955: harmless underflow in wm8955_put_deemph() X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Valid values for "deemph" are zero and one, but we mistakenly allow negative values as well. It's harmless but we may as well clean it up. Signed-off-by: Dan Carpenter Acked-by: Charles Keepax diff --git a/sound/soc/codecs/wm8955.c b/sound/soc/codecs/wm8955.c index 12e4435..9db00d5 100644 --- a/sound/soc/codecs/wm8955.c +++ b/sound/soc/codecs/wm8955.c @@ -402,7 +402,7 @@ static int wm8955_put_deemph(struct snd_kcontrol *kcontrol, { struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec); - int deemph = ucontrol->value.integer.value[0]; + unsigned int deemph = ucontrol->value.integer.value[0]; if (deemph > 1) return -EINVAL;