From patchwork Fri Jul 1 11:34:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liang He X-Patchwork-Id: 12903209 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3700CC433EF for ; Fri, 1 Jul 2022 11:35:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233327AbiGALfL (ORCPT ); Fri, 1 Jul 2022 07:35:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233234AbiGALfK (ORCPT ); Fri, 1 Jul 2022 07:35:10 -0400 Received: from m15111.mail.126.com (m15111.mail.126.com [220.181.15.111]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 40207814AB for ; Fri, 1 Jul 2022 04:35:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=126.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=iXYAj Cez7FimfKnHDWkF9EsiI2KXgUtvzxPYj8CxWXE=; b=gy57wLjgHSi/QVmtUbOsS WLEpX2KsXFif4f1MOCOrLn3r0znTCiZEjuhxa0vRyP9W24jDSU5k9IqIvyGPKfuu hVy9iQDfJY8Zi9suorbQS4FdEH0As0ZBEyvrzUfTXcQwrHYXkfEfWx840413vjjH uI/UoMoja16mF0GV/Ezxkw= Received: from localhost.localdomain (unknown [124.16.139.61]) by smtp1 (Coremail) with SMTP id C8mowABXNibg275itdsZFw--.42148S2; Fri, 01 Jul 2022 19:34:56 +0800 (CST) From: Liang He To: tony@atomide.com, linux@armlinux.org.uk, linux-omap@vger.kernel.org, windhl@126.com Cc: Miaoqian Lin Subject: [PATCH v2] arm: omap2: pm33xx-core: Fix missing of_node_put() in amx3_idle_init() Date: Fri, 1 Jul 2022 19:34:55 +0800 Message-Id: <20220701113455.233531-1-windhl@126.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: C8mowABXNibg275itdsZFw--.42148S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7tr18GrW7CFW7tryrJw1UKFg_yoW8Xr4fpr Z8Ca9Yk348Ww1UG3ySqFZavrWq93WqkrWFyr98Ca1xtan3Ja4fAryFvrZ8uw4fJFySq3Wr Zw10yryDuayDXrUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0zRYYLPUUUUU= X-Originating-IP: [124.16.139.61] X-CM-SenderInfo: hzlqvxbo6rjloofrz/1tbi7R4xF1pEAUXnRAABst Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org To keep refcount balance, we need to call of_node_put() for the reference 'state_node' returned by of_parse_phandle() in fail path or when it is not used anymore. Fixes: 06ee7a950b6a ("ARM: OMAP2+: pm33xx-core: Add cpuidle_ops for am335x/am437x") Co-authored-by: Miaoqian Lin Signed-off-by: Liang He --- changelog: v2: add Co-authored-by Miaoqian Ling and fix tag v1: fix missing of_node_put() bug, but with some error with 'format-patch' arch/arm/mach-omap2/pm33xx-core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/pm33xx-core.c b/arch/arm/mach-omap2/pm33xx-core.c index bf0d25fd2cea..58b98a17746c 100644 --- a/arch/arm/mach-omap2/pm33xx-core.c +++ b/arch/arm/mach-omap2/pm33xx-core.c @@ -393,12 +393,15 @@ static int __init amx3_idle_init(struct device_node *cpu_node, int cpu) if (!state_node) break; - if (!of_device_is_available(state_node)) + if (!of_device_is_available(state_node)) { + of_node_put(state_node); continue; + } if (i == CPUIDLE_STATE_MAX) { pr_warn("%s: cpuidle states reached max possible\n", __func__); + of_node_put(state_node); break; } @@ -408,6 +411,7 @@ static int __init amx3_idle_init(struct device_node *cpu_node, int cpu) states[state_count].wfi_flags |= WFI_FLAG_WAKE_M3 | WFI_FLAG_FLUSH_CACHE; + of_node_put(state_node); state_count++; }