From nobody Mon Apr 13 14:28:50 2026 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 D24C9C4332F for ; Mon, 14 Nov 2022 03:05:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235745AbiKNDE6 (ORCPT ); Sun, 13 Nov 2022 22:04:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235657AbiKNDE5 (ORCPT ); Sun, 13 Nov 2022 22:04:57 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 846CF140DF; Sun, 13 Nov 2022 19:04:55 -0800 (PST) Received: from dggpeml500026.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4N9Z0f2f8RzmVxc; Mon, 14 Nov 2022 11:04:34 +0800 (CST) Received: from dggpeml500006.china.huawei.com (7.185.36.76) by dggpeml500026.china.huawei.com (7.185.36.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Mon, 14 Nov 2022 11:04:53 +0800 Received: from localhost.localdomain (10.175.112.70) by dggpeml500006.china.huawei.com (7.185.36.76) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Mon, 14 Nov 2022 11:04:53 +0800 From: Zhang Changzhong To: Vincent Mailhol , Wolfgang Grandegger , Marc Kleine-Budde , "David S. Miller" , Eric Dumazet , "Jakub Kicinski" , Paolo Abeni , "Arunachalam Santhanam" CC: Zhang Changzhong , , , Subject: [PATCH] can: etas_es58x: free netdev when register_candev() failed in es58x_init_netdev() Date: Mon, 14 Nov 2022 11:25:05 +0800 Message-ID: <1668396306-47940-1-git-send-email-zhangchangzhong@huawei.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 X-Originating-IP: [10.175.112.70] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpeml500006.china.huawei.com (7.185.36.76) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In case of register_candev() fails, clear es58x_dev->netdev[channel_idx] and add free_candev(). Otherwise es58x_free_netdevs() will unregister the netdev that has never been registered. Fixes: 1dfb6005a60b ("can: etas_es58x: add support for ETAS ES581.4 CAN USB= interface") Signed-off-by: Zhang Changzhong Acked-by: Vincent Mailhol --- drivers/net/can/usb/etas_es58x/es58x_core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.c b/drivers/net/can/= usb/etas_es58x/es58x_core.c index 25f863b..ddb7c57 100644 --- a/drivers/net/can/usb/etas_es58x/es58x_core.c +++ b/drivers/net/can/usb/etas_es58x/es58x_core.c @@ -2091,8 +2091,11 @@ static int es58x_init_netdev(struct es58x_device *es= 58x_dev, int channel_idx) netdev->dev_port =3D channel_idx; =20 ret =3D register_candev(netdev); - if (ret) + if (ret) { + es58x_dev->netdev[channel_idx] =3D NULL; + free_candev(netdev); return ret; + } =20 netdev_queue_set_dql_min_limit(netdev_get_tx_queue(netdev, 0), es58x_dev->param->dql_min_limit); --=20 2.9.5