From patchwork Thu Sep 10 10:08:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 258582 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4BF85C433E2 for ; Thu, 10 Sep 2020 10:10:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 030EC214F1 for ; Thu, 10 Sep 2020 10:10:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="nnUIPZyd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730460AbgIJKKW (ORCPT ); Thu, 10 Sep 2020 06:10:22 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:38670 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730380AbgIJKKU (ORCPT ); Thu, 10 Sep 2020 06:10:20 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 08A9waUk118560; Thu, 10 Sep 2020 10:10:14 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : mime-version : content-type; s=corp-2020-01-29; bh=dJPdwqxAhYznmHRspV8tsQZer1P2erCXwmDyEJdSu6c=; b=nnUIPZyd6aiOrXWgqNDVnee+AiExuVmYz/JwnoWxusRpxhpRf8fRKv3hvUqRNA6dKw7z rjGT1R5cr2JrWtqWwCegkwifQbH2ZUWr5sTmDn9JhH13xnl4SafuThxdyk2a1Y3xvGiP HgUqIjINvSV2SNwhCng4vNlTyJ0VSYr/smJ+1e3JSRi+VIYU36oQ2FRoiLa/Upw5FcW6 dxRkF/GoaTZyfSqZe7ayZHzrkMT7mWQcwKVu9TUPX2VuOGFJsBmERevwYRrRupHCd/pI EjkJA3WCchPWyCca9/8o3KP/Deydxo/SZM97vvu/5mh4g+lWSLg8L1th/VTWZnKg4Out oQ== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by aserp2120.oracle.com with ESMTP id 33c2mm73g8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 10 Sep 2020 10:10:14 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 08AA6RrF136447; Thu, 10 Sep 2020 10:08:13 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userp3030.oracle.com with ESMTP id 33cmm0pyf7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 10 Sep 2020 10:08:13 +0000 Received: from abhmp0011.oracle.com (abhmp0011.oracle.com [141.146.116.17]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 08AA8CIU011495; Thu, 10 Sep 2020 10:08:12 GMT Received: from mwanda (/41.57.98.10) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 10 Sep 2020 03:08:12 -0700 Date: Thu, 10 Sep 2020 13:08:05 +0300 From: Dan Carpenter To: Andreas Noever Cc: Michael Jamet , Mika Westerberg , Yehezkel Bernat , Gil Fine , Greg Kroah-Hartman , linux-usb@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] thunderbolt: debugfs: Fix uninitialized return in counters_write() Message-ID: <20200910100805.GB79916@mwanda> MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9739 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 phishscore=0 suspectscore=0 spamscore=0 mlxlogscore=999 adultscore=0 malwarescore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009100094 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9739 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 priorityscore=1501 phishscore=0 adultscore=0 bulkscore=0 clxscore=1011 mlxlogscore=999 malwarescore=0 suspectscore=0 lowpriorityscore=0 spamscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009100093 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org If the first line is in an invalid format then the "ret" value is uninitialized. We should return -EINVAL instead. Fixes: 54e418106c76 ("thunderbolt: Add debugfs interface") Signed-off-by: Dan Carpenter --- drivers/thunderbolt/debugfs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c index fdfe6e4afbfe..3680b2784ea1 100644 --- a/drivers/thunderbolt/debugfs.c +++ b/drivers/thunderbolt/debugfs.c @@ -231,6 +231,7 @@ static ssize_t counters_write(struct file *file, const char __user *user_buf, char *line = buf; u32 val, offset; + ret = -EINVAL; while (parse_line(&line, &offset, &val, 1, 4)) { ret = tb_port_write(port, &val, TB_CFG_COUNTERS, offset, 1);