From patchwork Thu Sep 26 22:56:04 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Denis Efremov (Oracle)" X-Patchwork-Id: 11163437 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6D31D1709 for ; Thu, 26 Sep 2019 22:56:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5585F20835 for ; Thu, 26 Sep 2019 22:56:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728336AbfIZW4S (ORCPT ); Thu, 26 Sep 2019 18:56:18 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:39096 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725943AbfIZW4R (ORCPT ); Thu, 26 Sep 2019 18:56:17 -0400 Received: by mail-wm1-f65.google.com with SMTP id v17so4177714wml.4; Thu, 26 Sep 2019 15:56:16 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=q3J4HBnNW4Hl+Gjxw0HAbYQSV7ljaMhCOnbd8J0BKfw=; b=OGcVLqNDzgAxc2ptvHjEJc0ZnwDU+dw0zjb3h1aCQBF9EI5cq/LjPDZNYcm8rVYcB3 yWUVna7KCPCAomjPQVODfwf2sBswGjY3TYOxR6o2BZ06XNQHTCLYinXTfDrDXwvsVJBW NKQBR/jf7Itslea+zewbR842C8+FDa/rPHIT9dqYDJCjR71WO53XPlZMNUfTyJwkKpVr NzgSobk/sbtPj6Lpwsjp8xAx6AkaVAtHx5B3lLFULed6HdOfoRwCQ6eEKo8Jbn7SUC81 xoCTp2AubiWE+YmzLRFgXGxALTme01kpIocxZ2x80dkidGoFp6X5kUjdemN0pTPT67Xt iTzw== X-Gm-Message-State: APjAAAV6zLbTVlt/pc6MvSipCKYaXTaoYxJPMTZxthHBBq3mNP+5J12p C0M6K4tFSA7eyjqroyjOzfo= X-Google-Smtp-Source: APXvYqxrKsKE3nBWyY+NBDRt5sgGhpX8jpg+uUmLH1ydlfeiF9neM0okf0pfLaVTq7mi5G3PAWSx4w== X-Received: by 2002:a1c:a516:: with SMTP id o22mr5117224wme.116.1569538575651; Thu, 26 Sep 2019 15:56:15 -0700 (PDT) Received: from localhost.localdomain (broadband-188-32-48-208.ip.moscow.rt.ru. [188.32.48.208]) by smtp.googlemail.com with ESMTPSA id f17sm668350wru.29.2019.09.26.15.56.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Sep 2019 15:56:14 -0700 (PDT) From: Denis Efremov Cc: Denis Efremov , ath9k-devel@qca.qualcomm.com, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Rajkumar Manoharan , "John W . Linville" , Kalle Valo , "David S. Miller" , stable@vger.kernel.org Subject: [PATCH] ath9k_hw: fix uninitialized variable data Date: Fri, 27 Sep 2019 01:56:04 +0300 Message-Id: <20190926225604.9342-1-efremov@linux.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Currently, data variable in ar9003_hw_thermo_cal_apply() could be uninitialized if ar9300_otp_read_word() will fail to read the value. Initialize data variable with 0 to prevent an undefined behavior. This will be enough to handle error case when ar9300_otp_read_word() fails. Fixes: 80fe43f2bbd5 ("ath9k_hw: Read and configure thermocal for AR9462") Cc: Rajkumar Manoharan Cc: John W. Linville Cc: Kalle Valo Cc: "David S. Miller" Cc: stable@vger.kernel.org Signed-off-by: Denis Efremov --- drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c index 2b29bf4730f6..b4885a700296 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c @@ -4183,7 +4183,7 @@ static void ar9003_hw_thermometer_apply(struct ath_hw *ah) static void ar9003_hw_thermo_cal_apply(struct ath_hw *ah) { - u32 data, ko, kg; + u32 data = 0, ko, kg; if (!AR_SREV_9462_20_OR_LATER(ah)) return;