From patchwork Mon Mar 10 11:58:56 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 3802591 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id CCA67BF540 for ; Mon, 10 Mar 2014 12:00:03 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 002DE2024F for ; Mon, 10 Mar 2014 12:00:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 21ACE2022A for ; Mon, 10 Mar 2014 12:00:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753458AbaCJL74 (ORCPT ); Mon, 10 Mar 2014 07:59:56 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:50441 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753184AbaCJL7w (ORCPT ); Mon, 10 Mar 2014 07:59:52 -0400 Received: from [201.74.152.26] (helo=smtp.w2.samsung.com) by bombadil.infradead.org with esmtpsa (Exim 4.80.1 #2 (Red Hat Linux)) id 1WMys1-00053x-V4; Mon, 10 Mar 2014 11:59:50 +0000 Received: from mchehab by smtp.w2.samsung.com with local (Exim 4.80.1) (envelope-from ) id 1WMyrN-0001QP-FE; Mon, 10 Mar 2014 08:59:09 -0300 From: Mauro Carvalho Chehab Cc: Mauro Carvalho Chehab , Linux Media Mailing List , Mauro Carvalho Chehab Subject: [PATCH 04/15] drx-j: don't use mc_info before checking if its not NULL Date: Mon, 10 Mar 2014 08:58:56 -0300 Message-Id: <1394452747-5426-5-git-send-email-m.chehab@samsung.com> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1394452747-5426-1-git-send-email-m.chehab@samsung.com> References: <1394452747-5426-1-git-send-email-m.chehab@samsung.com> To: unlisted-recipients:; (no To-header on input) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP smatch warning: drivers/media/dvb-frontends/drx39xyj/drxj.c:20803 drx_ctrl_u_code() warn: variable dereferenced before check 'mc_info' (see line 20800) Reported-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/drx39xyj/drxj.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/dvb-frontends/drx39xyj/drxj.c b/drivers/media/dvb-frontends/drx39xyj/drxj.c index 1e6dab7e5892..a8fd53b612ae 100644 --- a/drivers/media/dvb-frontends/drx39xyj/drxj.c +++ b/drivers/media/dvb-frontends/drx39xyj/drxj.c @@ -20208,12 +20208,14 @@ static int drx_ctrl_u_code(struct drx_demod_instance *demod, const u8 *mc_data_init = NULL; u8 *mc_data = NULL; unsigned size; - char *mc_file = mc_info->mc_file; + char *mc_file; /* Check arguments */ - if (!mc_info || !mc_file) + if (!mc_info || !mc_info->mc_file) return -EINVAL; + mc_file = mc_info->mc_file; + if (!demod->firmware) { const struct firmware *fw = NULL;