From patchwork Mon May 17 14:02:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 440928 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 CF7E4C43460 for ; Mon, 17 May 2021 14:36:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B60016192D for ; Mon, 17 May 2021 14:36:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240283AbhEQOhb (ORCPT ); Mon, 17 May 2021 10:37:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:34328 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240906AbhEQOf0 (ORCPT ); Mon, 17 May 2021 10:35:26 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 831F46192F; Mon, 17 May 2021 14:17:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621261034; bh=Z+su00VV6BzT4yB/RcshKmukqgCEF2W7XMrUIcaYdq0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oNsvtJ/7hNutUb8pYlILiav7I7w1+MAqNSjSNTkaHfFlWL9TLGoeFvGQwH7bpC53z 8KLvkkTYG/K6O+l0JiKlM2W4jHPX1beWzDansos58efLmr7SoH8fWOQ/lFet8o254P pea7DFl/4OgAQk97RyPo0SJILQFohkwEHn6OGJ3Y= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alexandru Tachici , Andy Shevchenko , Guenter Roeck , Sasha Levin Subject: [PATCH 5.12 294/363] hwmon: (ltc2992) Put fwnode in error case during ->probe() Date: Mon, 17 May 2021 16:02:40 +0200 Message-Id: <20210517140312.535276129@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210517140302.508966430@linuxfoundation.org> References: <20210517140302.508966430@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Andy Shevchenko [ Upstream commit 8370e5b093080c03cf89f7ebf0bef6984545429e ] In each iteration fwnode_for_each_available_child_node() bumps a reference counting of a loop variable followed by dropping in on a next iteration, Since in error case the loop is broken, we have to drop a reference count by ourselves. Do it for port_fwnode in error case during ->probe(). Fixes: b0bd407e94b0 ("hwmon: (ltc2992) Add support") Cc: Alexandru Tachici Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210510100136.3303142-1-andy.shevchenko@gmail.com Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin --- drivers/hwmon/ltc2992.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/ltc2992.c b/drivers/hwmon/ltc2992.c index 4382105bf142..2a4bed0ab226 100644 --- a/drivers/hwmon/ltc2992.c +++ b/drivers/hwmon/ltc2992.c @@ -900,11 +900,15 @@ static int ltc2992_parse_dt(struct ltc2992_state *st) fwnode_for_each_available_child_node(fwnode, child) { ret = fwnode_property_read_u32(child, "reg", &addr); - if (ret < 0) + if (ret < 0) { + fwnode_handle_put(child); return ret; + } - if (addr > 1) + if (addr > 1) { + fwnode_handle_put(child); return -EINVAL; + } ret = fwnode_property_read_u32(child, "shunt-resistor-micro-ohms", &val); if (!ret)