From patchwork Thu Nov 24 07:09:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuan Can X-Patchwork-Id: 13054631 X-Patchwork-Delegate: kuba@kernel.org 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 4B7F5C4332F for ; Thu, 24 Nov 2022 07:31:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229475AbiKXHbm (ORCPT ); Thu, 24 Nov 2022 02:31:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229450AbiKXHbl (ORCPT ); Thu, 24 Nov 2022 02:31:41 -0500 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7974C79921 for ; Wed, 23 Nov 2022 23:31:40 -0800 (PST) Received: from dggpeml500024.china.huawei.com (unknown [172.30.72.55]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4NHq075SnWz15MpP; Thu, 24 Nov 2022 15:10:47 +0800 (CST) Received: from huawei.com (10.175.112.208) by dggpeml500024.china.huawei.com (7.185.36.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Thu, 24 Nov 2022 15:11:19 +0800 From: Yuan Can To: , , , , , , , , , , CC: Subject: [PATCH] net: net_netdev: Fix error handling in ntb_netdev_init_module() Date: Thu, 24 Nov 2022 07:09:17 +0000 Message-ID: <20221124070917.38825-1-yuancan@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.175.112.208] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpeml500024.china.huawei.com (7.185.36.10) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The ntb_netdev_init_module() returns the ntb_transport_register_client() directly without checking its return value, if ntb_transport_register_client() failed, the NTB client device is not unregistered. Fix by unregister NTB client device when ntb_transport_register_client() failed. Fixes: 548c237c0a99 ("net: Add support for NTB virtual ethernet device") Signed-off-by: Yuan Can Reviewed-by: Dave Jiang --- drivers/net/ntb_netdev.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/net/ntb_netdev.c b/drivers/net/ntb_netdev.c index 464d88ca8ab0..a4abea921046 100644 --- a/drivers/net/ntb_netdev.c +++ b/drivers/net/ntb_netdev.c @@ -484,7 +484,14 @@ static int __init ntb_netdev_init_module(void) rc = ntb_transport_register_client_dev(KBUILD_MODNAME); if (rc) return rc; - return ntb_transport_register_client(&ntb_netdev_client); + + rc = ntb_transport_register_client(&ntb_netdev_client); + if (rc) { + ntb_transport_unregister_client_dev(KBUILD_MODNAME); + return rc; + } + + return 0; } module_init(ntb_netdev_init_module);