From mboxrd@z Thu Jan 1 00:00:00 1970 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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 82360C32792 for ; Thu, 3 Oct 2019 17:21:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3E60520830 for ; Thu, 3 Oct 2019 17:21:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570123291; bh=4TiQxJJfR3qDJTi4w87i1jLrhWKWJHCVRA0qnfV3P2g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=t2cq6qT35J6PiPYUS4UL69hnKVE3FH3rujzy2DS1q5GpuMyaSqpYZwgIEiG5bYXhY jG/ERAFj2DljQKzhAZV8Xiyu62IoKU3mSXn+eqUvCX7NLiP0MnyPHZNto8PYK1H7Dj hoLD174w7+bV1i6eDhXvLtIkewd5aRGS6Np+7uUI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389311AbfJCQRp (ORCPT ); Thu, 3 Oct 2019 12:17:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:43568 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389272AbfJCQRg (ORCPT ); Thu, 3 Oct 2019 12:17:36 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B74A120865; Thu, 3 Oct 2019 16:17:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570119455; bh=4TiQxJJfR3qDJTi4w87i1jLrhWKWJHCVRA0qnfV3P2g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Xd/6doLMQLqeHyGtWyxTGjyMa9VnzUmkgRftVaIHD3fK9GD3KMFuVz95Egk3kKA9i cwlwLW4JlUfdOERTArvwL728TudiCH4PzMiNosKacAAC4qar6wwwFOrgZq0XgHL2d1 ZsGSzTEI1O+Ig9SOQHJIWKZb7g57IXc9N/cfmnao= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Matthias Brugger , Houlong Wei , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 4.19 069/211] media: mtk-mdp: fix reference count on old device tree Date: Thu, 3 Oct 2019 17:52:15 +0200 Message-Id: <20191003154504.095569430@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154447.010950442@linuxfoundation.org> References: <20191003154447.010950442@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Matthias Brugger [ Upstream commit 864919ea0380e62adb2503b89825fe358acb8216 ] of_get_next_child() increments the reference count of the returning device_node. Decrement it in the check if we are using the old or the new DTB. Fixes: ba1f1f70c2c0 ("[media] media: mtk-mdp: Fix mdp device tree") Signed-off-by: Matthias Brugger Acked-by: Houlong Wei [hverkuil-cisco@xs4all.nl: use node instead of parent as temp variable] Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/platform/mtk-mdp/mtk_mdp_core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c index bbb24fb95b951..3deb0549b1a13 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c @@ -118,7 +118,9 @@ static int mtk_mdp_probe(struct platform_device *pdev) mutex_init(&mdp->vpulock); /* Old dts had the components as child nodes */ - if (of_get_next_child(dev->of_node, NULL)) { + node = of_get_next_child(dev->of_node, NULL); + if (node) { + of_node_put(node); parent = dev->of_node; dev_warn(dev, "device tree is out of date\n"); } else { -- 2.20.1