From patchwork Tue Mar 15 07:07:10 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 33478 X-Patchwork-Delegate: hverkuil@xs4all.nl Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.84_2) (envelope-from ) id 1afj57-00051z-KS; Tue, 15 Mar 2016 07:07:53 +0000 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.76/mailfrontend-8) with esmtp id 1afj55-0005Sc-lN; Tue, 15 Mar 2016 08:07:53 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933539AbcCOHH3 (ORCPT + 1 other); Tue, 15 Mar 2016 03:07:29 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:46485 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933033AbcCOHH0 (ORCPT ); Tue, 15 Mar 2016 03:07:26 -0400 Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u2F77Klv024369 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 15 Mar 2016 07:07:21 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userv0022.oracle.com (8.14.4/8.13.8) with ESMTP id u2F77KR2025923 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Tue, 15 Mar 2016 07:07:20 GMT Received: from abhmp0014.oracle.com (abhmp0014.oracle.com [141.146.116.20]) by userv0121.oracle.com (8.13.8/8.13.8) with ESMTP id u2F77Jqh016279; Tue, 15 Mar 2016 07:07:19 GMT Received: from mwanda (/154.0.139.178) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 15 Mar 2016 00:07:18 -0700 Date: Tue, 15 Mar 2016 10:07:10 +0300 From: Dan Carpenter To: Kyungmin Park Cc: Heungjun Kim , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [patch] [media] m5mols: potential uninitialized variable Message-ID: <20160315070710.GD13560@mwanda> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2016.3.15.70019 X-PMX-Spam: Gauge=IIIIIIIII, Probability=9%, Report=' MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, MSGID_ADDED_BY_MTA 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1000_1099 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, INVALID_MSGID_NO_FQDN 0, NO_URI_HTTPS 0, SINGLE_URI_IN_BODY 0, URI_ENDS_IN_HTML 0, __ANY_URI 0, __CD 0, __CP_URI_IN_BODY 0, __CT 0, __CT_TEXT_PLAIN 0, __DATE_TZ_RU 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILING_LIST 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __MULTIPLE_RCPTS_CC_X2 0, __SANE_MSGID 0, __SINGLE_URI_TEXT 0, __SUBJ_ALPHA_END 0, __TO_MALFORMED_2 0, __URI_IN_BODY 0, __URI_NO_WWW 0, __URI_NS , __URI_WITH_PATH 0, __USER_AGENT 0' Smatch complains that there are some paths where "status" isn't initialized. The code does assume that m5mols_read_u8() can fail so it seems as if Smatch is correct. Let's initialize it to REG_ISO_AUTO which is zero. Signed-off-by: Dan Carpenter --- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/media/i2c/m5mols/m5mols_controls.c b/drivers/media/i2c/m5mols/m5mols_controls.c index a60931e..c2218c0 100644 --- a/drivers/media/i2c/m5mols/m5mols_controls.c +++ b/drivers/media/i2c/m5mols/m5mols_controls.c @@ -405,7 +405,7 @@ static int m5mols_g_volatile_ctrl(struct v4l2_ctrl *ctrl) struct v4l2_subdev *sd = to_sd(ctrl); struct m5mols_info *info = to_m5mols(sd); int ret = 0; - u8 status; + u8 status = REG_ISO_AUTO; v4l2_dbg(1, m5mols_debug, sd, "%s: ctrl: %s (%d)\n", __func__, ctrl->name, info->isp_ready);