From patchwork Thu Apr 26 13:13:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 905065 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=embeddedor.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40Wykn3B04z9s02 for ; Thu, 26 Apr 2018 23:36:01 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756344AbeDZNf6 (ORCPT ); Thu, 26 Apr 2018 09:35:58 -0400 Received: from gateway36.websitewelcome.com ([192.185.199.121]:38286 "EHLO gateway36.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756008AbeDZNfz (ORCPT ); Thu, 26 Apr 2018 09:35:55 -0400 X-Greylist: delayed 1234 seconds by postgrey-1.27 at vger.kernel.org; Thu, 26 Apr 2018 09:35:55 EDT Received: from cm11.websitewelcome.com (cm11.websitewelcome.com [100.42.49.5]) by gateway36.websitewelcome.com (Postfix) with ESMTP id BE9E2411B781D for ; Thu, 26 Apr 2018 08:13:28 -0500 (CDT) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id BgiGfRuUYA3CSBgiGfXU59; Thu, 26 Apr 2018 08:13:28 -0500 X-Authority-Reason: nr=8 Received: from [189.145.33.162] (port=41440 helo=embeddedor) by gator4166.hostgator.com with esmtpa (Exim 4.89_1) (envelope-from ) id 1fBgiG-00370h-B6; Thu, 26 Apr 2018 08:13:28 -0500 Date: Thu, 26 Apr 2018 08:13:24 -0500 From: "Gustavo A. R. Silva" To: Amitkumar Karwar , Kalle Valo Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] rsi_91x_usb: fix uninitialized variable Message-ID: <20180426131324.GA982@embeddedor.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.145.33.162 X-Source-L: No X-Exim-ID: 1fBgiG-00370h-B6 X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedor) [189.145.33.162]:41440 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 9 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org There is a potential execution path in which variable ret is returned without being properly initialized previously. Fix this by storing the value returned by function rsi_usb_master_reg_write into _ret_. Addresses-Coverity-ID: 1468407 ("Uninitialized scalar variable") Fixes: 16d3bb7b2f37 ("rsi: disable fw watchdog timer during reset") Signed-off-by: Gustavo A. R. Silva --- drivers/net/wireless/rsi/rsi_91x_usb.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/rsi/rsi_91x_usb.c b/drivers/net/wireless/rsi/rsi_91x_usb.c index b065438..6ce6b75 100644 --- a/drivers/net/wireless/rsi/rsi_91x_usb.c +++ b/drivers/net/wireless/rsi/rsi_91x_usb.c @@ -687,9 +687,10 @@ static int rsi_reset_card(struct rsi_hw *adapter) */ msleep(100); - if (rsi_usb_master_reg_write(adapter, SWBL_REGOUT, - RSI_FW_WDT_DISABLE_REQ, - RSI_COMMON_REG_SIZE) < 0) { + ret = rsi_usb_master_reg_write(adapter, SWBL_REGOUT, + RSI_FW_WDT_DISABLE_REQ, + RSI_COMMON_REG_SIZE); + if (ret < 0) { rsi_dbg(ERR_ZONE, "Disabling firmware watchdog timer failed\n"); goto fail; }