From patchwork Mon Jul 12 06:10:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 475657 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 046DCC07E99 for ; Mon, 12 Jul 2021 07:23:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DD13C6146E for ; Mon, 12 Jul 2021 07:23:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243672AbhGLH0G (ORCPT ); Mon, 12 Jul 2021 03:26:06 -0400 Received: from mail.kernel.org ([198.145.29.99]:33134 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244617AbhGLHXR (ORCPT ); Mon, 12 Jul 2021 03:23:17 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 841DD61006; Mon, 12 Jul 2021 07:20:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626074429; bh=dkebn8beVt2hG4JsRPfs3GMgsno86/jY+cJ4qjOL/mM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PXC+7YTMUIJSyV610VV/go5tNUKx8zZdmsTMsle8QFBypMM5hu0P/bq1cGbiWxnO5 matmp4G5eywgaglS0o+PL0JXogxt1FgOHRwLHv00aQJAKefWEDLiVBTTHeBqi+x2D8 beQ7xBOB8lxsu+yyyNC0s3ZYy7UsZ/4TXNczlVZc= 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 5.12 575/700] leds: lp50xx: Put fwnode in error case during ->probe() Date: Mon, 12 Jul 2021 08:10:58 +0200 Message-Id: <20210712061037.228502903@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060924.797321836@linuxfoundation.org> References: <20210712060924.797321836@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 f1e1d532da7e6ef355528a22fb97d9a8fbf76c4e ] fwnode_for_each_child_node() bumps a reference counting of a returned variable. We have to balance it whenever we return to the caller. OTOH, the successful iteration will drop reference count under the hood, no need to do it twice. Fixes: 242b81170fb8 ("leds: lp50xx: Add the LP50XX family of the RGB LED driver") Cc: Dan Murphy Signed-off-by: Andy Shevchenko Signed-off-by: Pavel Machek Signed-off-by: Sasha Levin --- drivers/leds/leds-lp50xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/leds/leds-lp50xx.c b/drivers/leds/leds-lp50xx.c index 06230614fdc5..401df1e2e05d 100644 --- a/drivers/leds/leds-lp50xx.c +++ b/drivers/leds/leds-lp50xx.c @@ -490,6 +490,7 @@ static int lp50xx_probe_dt(struct lp50xx *priv) ret = fwnode_property_read_u32(led_node, "color", &color_id); if (ret) { + fwnode_handle_put(led_node); dev_err(priv->dev, "Cannot read color\n"); goto child_out; } @@ -512,7 +513,6 @@ static int lp50xx_probe_dt(struct lp50xx *priv) goto child_out; } i++; - fwnode_handle_put(child); } return 0;