From patchwork Fri Mar 1 08:56:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10834703 X-Patchwork-Delegate: horms@verge.net.au Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1476D1399 for ; Fri, 1 Mar 2019 08:57:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 02A432F672 for ; Fri, 1 Mar 2019 08:57:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EA3C12F6E1; Fri, 1 Mar 2019 08:57:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 878752F672 for ; Fri, 1 Mar 2019 08:57:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387518AbfCAI5S (ORCPT ); Fri, 1 Mar 2019 03:57:18 -0500 Received: from out1.zte.com.cn ([202.103.147.172]:59786 "EHLO mxct.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387462AbfCAI5S (ORCPT ); Fri, 1 Mar 2019 03:57:18 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 7924E8CB0EA339EE6CBB; Fri, 1 Mar 2019 16:57:14 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x218v4C8086834; Fri, 1 Mar 2019 16:57:04 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019030116574332-2498980 ; Fri, 1 Mar 2019 16:57:43 +0800 From: Wen Yang To: liviu.dudau@arm.com Cc: sudeep.holla@arm.com, lorenzo.pieralisi@arm.com, linux@armlinux.org.uk, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kgene@kernel.org, krzk@kernel.org, linux-samsung-soc@vger.kernel.org, michal.simek@xilinx.com, afaerber@suse.de, manivannan.sadhasivam@linaro.org, dinguyen@kernel.org, heiko@sntech.de, linux-rockchip@lists.infradead.org, f.fainelli@gmail.com, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, linus.walleij@linaro.org, avifishman70@gmail.com, tmaimon77@gmail.com, venture@google.com, yuenn@google.com, brendanhiggins@google.com, openbmc@lists.ozlabs.org, xuwei5@hisilicon.com, maxime.ripard@bootlin.com, wens@csie.org, catalin.marinas@arm.com, will.deacon@arm.com, horms@verge.net.au, magnus.damm@gmail.com, linux-renesas-soc@vger.kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, fabio.estevam@nxp.com, linux-imx@nxp.com, wang.yi59@zte.com.cn, Wen Yang Subject: [PATCH 06/15] arm: npcm: fix a leaked reference by addingmissing of_node_put Date: Fri, 1 Mar 2019 16:56:47 +0800 Message-Id: <1551430616-42014-6-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1551430616-42014-1-git-send-email-wen.yang99@zte.com.cn> References: <1551430616-42014-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-03-01 16:57:43, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-03-01 16:56:49, Serialize complete at 2019-03-01 16:56:49 X-MAIL: mse01.zte.com.cn x218v4C8086834 Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_get_next_child returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./arch/arm/mach-npcm/platsmp.c:52:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 31, but without a corresponding object release within this function. ./arch/arm/mach-npcm/platsmp.c:68:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 60, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Avi Fishman Cc: Tomer Maimon Cc: Patrick Venture Cc: Nancy Yuen Cc: Brendan Higgins Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org Cc: openbmc@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Avi Fishman --- arch/arm/mach-npcm/platsmp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-npcm/platsmp.c b/arch/arm/mach-npcm/platsmp.c index 21633c7..fe63edc 100644 --- a/arch/arm/mach-npcm/platsmp.c +++ b/arch/arm/mach-npcm/platsmp.c @@ -35,6 +35,7 @@ static int npcm7xx_smp_boot_secondary(unsigned int cpu, goto out; } gcr_base = of_iomap(gcr_np, 0); + of_node_put(gcr_np); if (!gcr_base) { pr_err("could not iomap gcr"); ret = -ENOMEM; @@ -63,6 +64,7 @@ static void __init npcm7xx_smp_prepare_cpus(unsigned int max_cpus) return; } scu_base = of_iomap(scu_np, 0); + of_node_put(scu_np); if (!scu_base) { pr_err("could not iomap scu"); return;