From patchwork Fri Nov 6 22:17:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 11888165 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0558C921 for ; Fri, 6 Nov 2020 22:18:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE92521556 for ; Fri, 6 Nov 2020 22:18:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604701099; bh=0nZsvJC7bKvsWii/4F8rVLDyxbI5Zs8ZxzeJcfM4j+k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=cNeTAFTKAZaZmKn6nTEzzZ7GAK9n4wfPgWIJfzU3Snnwe1hkYyNHccTxlLMQb0ZlL 0iegzFqJTecBMK8Zv14U54Oys52txeCp2ZZp/v6mCBeznY/Q6w0rDaNBKxoyKa+MDK fOlPGKMY/hVCR8lAU+kTpHdnHRPHxDEa0PD0OWBc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728926AbgKFWSS (ORCPT ); Fri, 6 Nov 2020 17:18:18 -0500 Received: from mail.kernel.org ([198.145.29.99]:41542 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728915AbgKFWSP (ORCPT ); Fri, 6 Nov 2020 17:18:15 -0500 Received: from localhost.localdomain (HSI-KBW-46-223-126-90.hsi.kabel-badenwuerttemberg.de [46.223.126.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 48D73208C7; Fri, 6 Nov 2020 22:18:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604701094; bh=0nZsvJC7bKvsWii/4F8rVLDyxbI5Zs8ZxzeJcfM4j+k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WYhuh1WeMtLDKBKefKeaic5NUOJzadJ53FzEB2UQXzCEHinw7qCsI6CYtNMqeEdoy 6S+yFjM7lHpx1DLzo4Uj1ON7HLGgFJLCfQxucvGzoWLz9fYorSMk3baiAp5pVpG2hb Zn0EDsMTOs9P9nrFdTdwsyIEN5Us7lupQKr+BlvM= From: Arnd Bergmann To: netdev@vger.kernel.org Cc: Arnd Bergmann , linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, bridge@lists.linux-foundation.org, linux-hams@vger.kernel.org, Jakub Kicinski , Christoph Hellwig , Alexander Viro , Johannes Berg , Andrew Lunn , Heiner Kallweit Subject: [RFC net-next 07/28] phonet: use siocdevprivate Date: Fri, 6 Nov 2020 23:17:22 +0100 Message-Id: <20201106221743.3271965-8-arnd@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201106221743.3271965-1-arnd@kernel.org> References: <20201106221743.3271965-1-arnd@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Arnd Bergmann phonet has a single private ioctl that is broken in compat mode on big-endian machines today because the data returned from it is never copied back to user space. Move it over to the ndo_siocdevprivate callback, which also fixes the compat issue. Signed-off-by: Arnd Bergmann --- drivers/net/usb/cdc-phonet.c | 5 +++-- net/phonet/pn_dev.c | 6 +++--- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/net/usb/cdc-phonet.c b/drivers/net/usb/cdc-phonet.c index dba847f28096..5f6d34acf871 100644 --- a/drivers/net/usb/cdc-phonet.c +++ b/drivers/net/usb/cdc-phonet.c @@ -253,7 +253,8 @@ static int usbpn_close(struct net_device *dev) return usb_set_interface(pnd->usb, num, !pnd->active_setting); } -static int usbpn_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +static int usbpn_siocdevprivate(struct net_device *dev, struct ifreq *ifr, + void __user *data, int cmd) { struct if_phonet_req *req = (struct if_phonet_req *)ifr; @@ -269,7 +270,7 @@ static const struct net_device_ops usbpn_ops = { .ndo_open = usbpn_open, .ndo_stop = usbpn_close, .ndo_start_xmit = usbpn_xmit, - .ndo_do_ioctl = usbpn_ioctl, + .ndo_siocdevprivate = usbpn_siocdevprivate, }; static void usbpn_setup(struct net_device *dev) diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c index ac0fae06cc15..876d0ae5f9fd 100644 --- a/net/phonet/pn_dev.c +++ b/net/phonet/pn_dev.c @@ -233,11 +233,11 @@ static int phonet_device_autoconf(struct net_device *dev) struct if_phonet_req req; int ret; - if (!dev->netdev_ops->ndo_do_ioctl) + if (!dev->netdev_ops->ndo_siocdevprivate) return -EOPNOTSUPP; - ret = dev->netdev_ops->ndo_do_ioctl(dev, (struct ifreq *)&req, - SIOCPNGAUTOCONF); + ret = dev->netdev_ops->ndo_siocdevprivate(dev, (struct ifreq *)&req, + NULL, SIOCPNGAUTOCONF); if (ret < 0) return ret;