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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF3FDC43334 for ; Mon, 13 Jun 2022 13:41:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378366AbiFMNlH (ORCPT ); Mon, 13 Jun 2022 09:41:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1379069AbiFMNjq (ORCPT ); Mon, 13 Jun 2022 09:39:46 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9404979837; Mon, 13 Jun 2022 04:28:37 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 1C69961037; Mon, 13 Jun 2022 11:28:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A576C3411C; Mon, 13 Jun 2022 11:28:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1655119716; bh=VUIwTE/R/gT6QkPadJm9m7QpXLSCUmu6jQ4IQETBtuI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Wdv3Yl2W248cSL+YcyiCiwhLqqqP/DFIsujCsBTvTU2qiiXTMfFBi6TAaRO9jO1a/ E7wqZOtZP5Hyzly3Tz97OnhZvKUgDu2vu4GX2rsf/8q+YPFdzJN6Vdz5WyXnHXG13m r+u7a3pWjaulCPKbNWrdhRPe5FtorJDadYPq6q3A= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaoqian Lin , "David S. Miller" , Sasha Levin Subject: [PATCH 5.18 095/339] net: ethernet: ti: am65-cpsw-nuss: Fix some refcount leaks Date: Mon, 13 Jun 2022 12:08:40 +0200 Message-Id: <20220613094929.394529394@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220613094926.497929857@linuxfoundation.org> References: <20220613094926.497929857@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Miaoqian Lin [ Upstream commit 5dd89d2fc438457811cbbec07999ce0d80051ff5 ] of_get_child_by_name() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. am65_cpsw_init_cpts() and am65_cpsw_nuss_probe() don't release the refcount in error case. Add missing of_node_put() to avoid refcount leak. Fixes: b1f66a5bee07 ("net: ethernet: ti: am65-cpsw-nuss: enable packet timestamping support") Fixes: 93a76530316a ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver") Signed-off-by: Miaoqian Lin Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index 98969070ed4b..6d978dbf708f 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -1797,6 +1797,7 @@ static int am65_cpsw_init_cpts(struct am65_cpsw_common *common) if (IS_ERR(cpts)) { int ret = PTR_ERR(cpts); + of_node_put(node); if (ret == -EOPNOTSUPP) { dev_info(dev, "cpts disabled\n"); return 0; @@ -2673,9 +2674,9 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev) if (!node) return -ENOENT; common->port_num = of_get_child_count(node); + of_node_put(node); if (common->port_num < 1 || common->port_num > AM65_CPSW_MAX_PORTS) return -ENOENT; - of_node_put(node); common->rx_flow_id_base = -1; init_completion(&common->tdown_complete); -- 2.35.1