From patchwork Mon Jul 12 06:11:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 476237 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=-19.4 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 D2245C07E9E for ; Mon, 12 Jul 2021 06:30:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BC6E8610FA for ; Mon, 12 Jul 2021 06:30:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236552AbhGLGdP (ORCPT ); Mon, 12 Jul 2021 02:33:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:46810 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235734AbhGLG3a (ORCPT ); Mon, 12 Jul 2021 02:29:30 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id DCC5D61156; Mon, 12 Jul 2021 06:25:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626071149; bh=qCAlAkHmVsvmMiHJk0+efinElvhI/Qb+TuZeh4brTOk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dT6S1JEjVCMSHvVE8IwS0vvB1R8LlZIk6BhmPOdPbSjSlTfX9VIdWE+I44ZL6K3T1 MdkNBPPr2Xdf78R7Etu678fEP12NyNiOguVEQLr4DQv6RCeXdayM/NWyCeRXCSUxwZ 3rXz8OY+XzZHUV3OgFEwuAjf8xF5YjQT8B3eZUWM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Murphy , Andy Shevchenko , Pavel Machek , Sasha Levin Subject: [PATCH 5.4 293/348] leds: lm3692x: Put fwnode in any case during ->probe() Date: Mon, 12 Jul 2021 08:11:17 +0200 Message-Id: <20210712060742.559934787@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060659.886176320@linuxfoundation.org> References: <20210712060659.886176320@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 f55db1c7fadc2a29c9fa4ff3aec98dbb111f2206 ] device_get_next_child_node() bumps a reference counting of a returned variable. We have to balance it whenever we return to the caller. Fixes: 9a5c1c64ac0a ("leds: lm3692x: Change DT calls to fwnode calls") Cc: Dan Murphy Signed-off-by: Andy Shevchenko Signed-off-by: Pavel Machek Signed-off-by: Sasha Levin --- drivers/leds/leds-lm3692x.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c index 1ac9a44570ee..cc77ea048d9b 100644 --- a/drivers/leds/leds-lm3692x.c +++ b/drivers/leds/leds-lm3692x.c @@ -358,6 +358,7 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) ret = fwnode_property_read_u32(child, "reg", &led->led_enable); if (ret) { + fwnode_handle_put(child); dev_err(&led->client->dev, "reg DT property missing\n"); return ret; } @@ -368,12 +369,11 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) ret = devm_led_classdev_register_ext(&led->client->dev, &led->led_dev, &init_data); - if (ret) { + if (ret) dev_err(&led->client->dev, "led register err: %d\n", ret); - return ret; - } - return 0; + fwnode_handle_put(init_data.fwnode); + return ret; } static int lm3692x_probe(struct i2c_client *client,