From patchwork Thu Apr 20 10:17:02 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 9690023 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 90B7760383 for ; Thu, 20 Apr 2017 10:17:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7AFD32623C for ; Thu, 20 Apr 2017 10:17:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6F7342841F; Thu, 20 Apr 2017 10:17:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6C2392623C for ; Thu, 20 Apr 2017 10:17:33 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 10722266B2A; Thu, 20 Apr 2017 12:17:30 +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 34F8D266FF6; Thu, 20 Apr 2017 12:17:28 +0200 (CEST) Received: from userp1040.oracle.com (userp1040.oracle.com [156.151.31.81]) by alsa0.perex.cz (Postfix) with ESMTP id E904D2666EC for ; Thu, 20 Apr 2017 12:17:23 +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 v3KAHJld020343 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 20 Apr 2017 10:17:20 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id v3KAHIxC031406 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 20 Apr 2017 10:17:18 GMT Received: from abhmp0014.oracle.com (abhmp0014.oracle.com [141.146.116.20]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id v3KAHFxY000471; Thu, 20 Apr 2017 10:17:15 GMT Received: from mwanda (/197.254.35.146) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 20 Apr 2017 03:17:14 -0700 Date: Thu, 20 Apr 2017 13:17:02 +0300 From: Dan Carpenter To: Liam Girdwood , Jeeja KP Message-ID: <20170420101702.nlq3537xumrseu26@mwanda> MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: NeoMutt/20170113 (1.7.2) X-Source-IP: aserv0022.oracle.com [141.146.126.234] Cc: alsa-devel@alsa-project.org, Dharageswari R , Lukas Wunner , Vinod Koul , Pardha Saradhi K , Jayachandran B , kernel-janitors@vger.kernel.org, Takashi Iwai , Mark Brown , "Subhransu S. Prusty" , Yong Zhi Subject: [alsa-devel] [PATCH] ASoC: Intel: Skylake: Uninitialized variable in probe_codec() 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 My static checker complains that if snd_hdac_bus_get_response() returns -EIO then "res" is uninitialized. Fix this by initializing it to -1 so that the error is handled correctly. Fixes: d8c2dab8381d ("ASoC: Intel: Add Skylake HDA audio driver") Signed-off-by: Dan Carpenter diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index 0c57d4eaae3a..6df3b317a476 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -512,7 +512,7 @@ static int probe_codec(struct hdac_ext_bus *ebus, int addr) struct hdac_bus *bus = ebus_to_hbus(ebus); unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) | (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; - unsigned int res; + unsigned int res = -1; mutex_lock(&bus->cmd_mutex); snd_hdac_bus_send_cmd(bus, cmd);