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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 25963C282C8 for ; Mon, 28 Jan 2019 17:41:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E896C2147A for ; Mon, 28 Jan 2019 17:41:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548697288; bh=DFqmGOJ3LBP+z8Wjz8u/2EGfM5QptJOFDIpszZXQ/0A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=oCa+p4i+Kl1sx60ffiZUytPI+xWSlhajQUTQ8qgBNDGRKtYuvaTt8RVo4xtz038hf 2hPHdfJ2PHh/Bo4DjXJg0I4gSYVrlPvuzGuHsLyaEJzkhzlyzqslP0vHHHLI38Uvb5 Tg6NCksmZujbvaKK+nBJ9+pDvPqumND0S9Hf2vxs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729240AbfA1Rl0 (ORCPT ); Mon, 28 Jan 2019 12:41:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:37724 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728552AbfA1PvD (ORCPT ); Mon, 28 Jan 2019 10:51:03 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 25E122147A; Mon, 28 Jan 2019 15:50:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548690662; bh=DFqmGOJ3LBP+z8Wjz8u/2EGfM5QptJOFDIpszZXQ/0A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A9Owtn/FTRoSWicFs7mdTH3Pl+XonWVQZlqdCJADLOkAD7EkS9WmuN+sObMx9H6PD lrAv0ScTwMTvmXQ3e4qXFkIcWGgENj5h++PX5BMvvXBG0DUEc5CFRdnmgWnw+DqPb3 sCNjUjyas3mub3UK9cQmcEGud7fsZ0ekQL6Hh8og= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yangtao Li , "Rafael J . Wysocki" , Sasha Levin , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 4.20 158/304] cpuidle: big.LITTLE: fix refcount leak Date: Mon, 28 Jan 2019 10:41:15 -0500 Message-Id: <20190128154341.47195-158-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128154341.47195-1-sashal@kernel.org> References: <20190128154341.47195-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yangtao Li [ Upstream commit 9456823c842f346c74265fcd98d008d87a7eb6f5 ] of_find_node_by_path() acquires a reference to the node returned by it and that reference needs to be dropped by its caller. bl_idle_init() doesn't do that, so fix it. Signed-off-by: Yangtao Li Acked-by: Daniel Lezcano Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/cpuidle/cpuidle-big_little.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/cpuidle/cpuidle-big_little.c b/drivers/cpuidle/cpuidle-big_little.c index db2ede565f1a..b44476a1b7ad 100644 --- a/drivers/cpuidle/cpuidle-big_little.c +++ b/drivers/cpuidle/cpuidle-big_little.c @@ -167,6 +167,7 @@ static int __init bl_idle_init(void) { int ret; struct device_node *root = of_find_node_by_path("/"); + const struct of_device_id *match_id; if (!root) return -ENODEV; @@ -174,7 +175,11 @@ static int __init bl_idle_init(void) /* * Initialize the driver just for a compliant set of machines */ - if (!of_match_node(compatible_machine_match, root)) + match_id = of_match_node(compatible_machine_match, root); + + of_node_put(root); + + if (!match_id) return -ENODEV; if (!mcpm_is_available()) -- 2.19.1