From patchwork Fri Feb 22 07:15:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10825339 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 60391922 for ; Fri, 22 Feb 2019 07:17:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 432052E895 for ; Fri, 22 Feb 2019 07:17:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 32F202E6E2; Fri, 22 Feb 2019 07:17:13 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D0F502E6E2 for ; Fri, 22 Feb 2019 07:17:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=DFbbMt4+DV33IShnNXZXWet0noqa251PtdLBw1R5mck=; b=UfcpvRkR7RxJfu/aiJJBVxYvkl phwFoCohbPO2ra0RbXFLg2JKatDtiVyijwA0W1gpbVIrLJSWmp8QwvqEQrklu5+ONp7AARJKn4D2u Cbg98eyTSXckX5gDXU0dz1si4jM/oszKHB4e1DpSXtAc+5m3eL7LsIFGc/QfE+kVk3cQoE9yWl3AZ x0geMudi17aXDWE/QGW2uAX2s7/RcdmuH1/1dNEj0p3ElHQjZxUHTapEtF0BeH25XrRWV2+qOnuGk J0UNXlnPYRrnI2aquForZJhRpDAMMSfFHqqRhHtTGWQXNYjuGCUzBftx2rgG+sw1vSDIqNP+j2KQR wbnyL/mQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gx54w-0003gg-CN; Fri, 22 Feb 2019 07:17:02 +0000 Received: from mxhk.zte.com.cn ([63.217.80.70]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gx53q-0002NV-QI; Fri, 22 Feb 2019 07:15:58 +0000 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 0775689F7E63BE8FA48E; Fri, 22 Feb 2019 15:15:43 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x1M7FONF037279; Fri, 22 Feb 2019 15:15:24 +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 2019022215160221-1228878 ; Fri, 22 Feb 2019 15:16:02 +0800 From: Wen Yang To: linus.walleij@linaro.org Subject: [PATCH 2/5] net: mscc: ocelot: fix a leaked reference by adding a missing of_node_put Date: Fri, 22 Feb 2019 15:15:39 +0800 Message-Id: <1550819742-32155-2-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1550819742-32155-1-git-send-email-wen.yang99@zte.com.cn> References: <1550819742-32155-1-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 2019-02-22 15:16:02, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-02-22 15:15:08, Serialize complete at 2019-02-22 15:15:08 X-MAIL: mse01.zte.com.cn x1M7FONF037279 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190221_231555_041048_D35469F2 X-CRM114-Status: GOOD ( 11.81 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wang.yi59@zte.com.cn, andrew@lunn.ch, alexandre.belloni@bootlin.com, f.fainelli@gmail.com, michal.simek@xilinx.com, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, davem@davemloft.net, Wen Yang , matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, anirudh@xilinx.com, lorenzo.bianconi83@gmail.com, UNGLinuxDriver@microchip.com, John.Linn@xilinx.com, vivien.didelot@gmail.com, kvalo@codeaurora.org, nbd@nbd.name MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./drivers/net/ethernet/mscc/ocelot_board.c:293:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 249, but without a corresponding object release within this function. ./drivers/net/ethernet/mscc/ocelot_board.c:312:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 249, but without a corresponding object release within this function. ./drivers/net/ethernet/mscc/ocelot_board.c:336:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 249, but without a corresponding object release within this function. ./drivers/net/ethernet/mscc/ocelot_board.c:339:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 249, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Alexandre Belloni Cc: Microchip Linux Driver Support Cc: "David S. Miller" Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/net/ethernet/mscc/ocelot_board.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mscc/ocelot_board.c b/drivers/net/ethernet/mscc/ocelot_board.c index ca3ea2f..f1485a6 100644 --- a/drivers/net/ethernet/mscc/ocelot_board.c +++ b/drivers/net/ethernet/mscc/ocelot_board.c @@ -290,7 +290,7 @@ static int mscc_ocelot_probe(struct platform_device *pdev) err = ocelot_probe_port(ocelot, port, regs, phy); if (err) - return err; + goto err_probe_ports; err = of_get_phy_mode(portnp); if (err < 0) @@ -309,7 +309,8 @@ static int mscc_ocelot_probe(struct platform_device *pdev) dev_err(ocelot->dev, "invalid phy mode for port%d, (Q)SGMII only\n", port); - return -EINVAL; + err = -EINVAL; + goto err_probe_ports; } serdes = devm_of_phy_get(ocelot->dev, portnp, NULL); @@ -328,6 +329,7 @@ static int mscc_ocelot_probe(struct platform_device *pdev) ocelot->ports[port]->serdes = serdes; } + of_node_put(ports); register_netdevice_notifier(&ocelot_netdevice_nb); register_switchdev_blocking_notifier(&ocelot_switchdev_blocking_nb); @@ -336,6 +338,7 @@ static int mscc_ocelot_probe(struct platform_device *pdev) return 0; err_probe_ports: + of_node_put(ports); return err; }