From patchwork Sun Feb 17 17:41:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vadim Pasternak X-Patchwork-Id: 10817183 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EA4C113B5 for ; Sun, 17 Feb 2019 17:42:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D7D8D2A0AB for ; Sun, 17 Feb 2019 17:42:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CB0962A0B1; Sun, 17 Feb 2019 17:42:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7063B2A0AB for ; Sun, 17 Feb 2019 17:42:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727908AbfBQRmB (ORCPT ); Sun, 17 Feb 2019 12:42:01 -0500 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:58720 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725811AbfBQRmB (ORCPT ); Sun, 17 Feb 2019 12:42:01 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from vadimp@mellanox.com) with ESMTPS (AES256-SHA encrypted); 17 Feb 2019 19:41:58 +0200 Received: from r-build-lowlevel.mtr.labs.mlnx. (r-build-lowlevel.mtr.labs.mlnx [10.209.0.190]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x1HHfwM8014822; Sun, 17 Feb 2019 19:41:58 +0200 From: Vadim Pasternak To: linux@roeck-us.net Cc: linux-hwmon@vger.kernel.org, Vadim Pasternak Subject: [PATCH v1 hwmon] hwmon: (pmbus) Fix driver info initialization in probe routine Date: Sun, 17 Feb 2019 17:41:55 +0000 Message-Id: <20190217174155.25829-1-vadimp@mellanox.com> X-Mailer: git-send-email 2.11.0 Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Fix tps53679_probe() by using dynamically allocated "pmbus_driver_info" structure instead of static. Usage of static structures causes overwritten of the field "vrm_version", in case the system is equipped with several tps53679 devices with the different "vrm_version". In such case the last probed device overwrites this field for all others. Fixes: 610526527a13 ("hwmon: (pmbus) Add support for Texas Instruments tps53679 device") Signed-off-by: Vadim Pasternak --- drivers/hwmon/pmbus/tps53679.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/pmbus/tps53679.c b/drivers/hwmon/pmbus/tps53679.c index 85b515cd9df0..45eacc504e2f 100644 --- a/drivers/hwmon/pmbus/tps53679.c +++ b/drivers/hwmon/pmbus/tps53679.c @@ -80,7 +80,15 @@ static struct pmbus_driver_info tps53679_info = { static int tps53679_probe(struct i2c_client *client, const struct i2c_device_id *id) { - return pmbus_do_probe(client, id, &tps53679_info); + struct pmbus_driver_info *info; + + info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + memcpy(info, &tps53679_info, sizeof(*info)); + + return pmbus_do_probe(client, id, info); } static const struct i2c_device_id tps53679_id[] = {