From patchwork Fri Jul 1 11:50:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liang He X-Patchwork-Id: 586434 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 3D723C43334 for ; Fri, 1 Jul 2022 11:51:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235799AbiGALv2 (ORCPT ); Fri, 1 Jul 2022 07:51:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51448 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235719AbiGALv1 (ORCPT ); Fri, 1 Jul 2022 07:51:27 -0400 Received: from m15114.mail.126.com (m15114.mail.126.com [220.181.15.114]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2E6118239F for ; Fri, 1 Jul 2022 04:51:25 -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=yBZrT uif9OaVzCq/OEPy8MkBjfaFCYAioQ3FuqDq1ZI=; b=RUo3M1LOlOlBtB9YZ1nY7 13/KoLpBtaDDZSusoyYMn3N1xetYqMsBrJ4imQmDWo/qH+yLcRauseOYtM4ok0W/ fUGhEfCGB2jot0QeDcBO6KipcCMY/HDh8L0Qmgeo1toJo7NkVChy3pZFI9ww+Aa9 D6FtKeNpL0Ob3heBG0CGPM= Received: from localhost.localdomain (unknown [124.16.139.61]) by smtp7 (Coremail) with SMTP id DsmowABXSNCs375iLQITEQ--.51969S2; Fri, 01 Jul 2022 19:51:09 +0800 (CST) From: Liang He To: tony@atomide.com, linux@armlinux.org.uk, linux-omap@vger.kernel.org, windhl@126.com Subject: [PATCH] arm: omap2: cm_common: Fix refcount balance bugs Date: Fri, 1 Jul 2022 19:50:45 +0800 Message-Id: <20220701115045.233729-1-windhl@126.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: DsmowABXSNCs375iLQITEQ--.51969S2 X-Coremail-Antispam: 1Uf129KBjvdXoWruw15Ar13GF47XF4DJr1kZrb_yoWfXFX_Zw n7Ka4kJF1xKw1Sgw4DJa1rWwsFqaykGrn7Ww1kX3WYga90qF429rZ0ya92v347WrW2krW7 GrZrZryYkw1aqjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUUBWlJUUUUU== X-Originating-IP: [124.16.139.61] X-CM-SenderInfo: hzlqvxbo6rjloofrz/xtbBGgkxF1-HZaxRxAABsw Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org In omap2_cm_base_init(), for_each_matching_node_and_match() will keep refcount balance. However, there is a reference escape into data->np, so we should use the of_node_put() for the old reference and of_node_get() for the new reference. Signed-off-by: Liang He --- arch/arm/mach-omap2/cm_common.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/cm_common.c b/arch/arm/mach-omap2/cm_common.c index 87f2c2d2d754..9d5d92d00484 100644 --- a/arch/arm/mach-omap2/cm_common.c +++ b/arch/arm/mach-omap2/cm_common.c @@ -339,7 +339,8 @@ int __init omap2_cm_base_init(void) mem->offset = data->offset; } - data->np = np; + of_node_put(data->np); + data->np = of_node_get(np); if (data->init && (data->flags & CM_SINGLE_INSTANCE || (cm_base.va && cm2_base.va)))