From patchwork Mon Mar 29 07:41:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 12169687 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87420C433DB for ; Mon, 29 Mar 2021 07:42:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C06961936 for ; Mon, 29 Mar 2021 07:42:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231159AbhC2Hlp (ORCPT ); Mon, 29 Mar 2021 03:41:45 -0400 Received: from mga11.intel.com ([192.55.52.93]:58297 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230432AbhC2Hlk (ORCPT ); Mon, 29 Mar 2021 03:41:40 -0400 IronPort-SDR: YqdWr6MaHc7b/qU8GAXVC6sobbbssgqsSJkeXxOzlN174XMjVVGg5woUAdu+daFjAS+R0rCDzJ Y2Mp61yOIGFA== X-IronPort-AV: E=McAfee;i="6000,8403,9937"; a="188231494" X-IronPort-AV: E=Sophos;i="5.81,287,1610438400"; d="scan'208";a="188231494" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Mar 2021 00:41:40 -0700 IronPort-SDR: xs7jpJmXUvJsU1sI+7X93dta2i99jAjzIhXI6u3rjiMmH4lIj1DNwEN1OzfUdKbXO0yyxd73CP WoEsYtEXS3Yw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,287,1610438400"; d="scan'208";a="383471236" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga007.fm.intel.com with ESMTP; 29 Mar 2021 00:41:36 -0700 Received: by black.fi.intel.com (Postfix, from userid 1001) id 9F70AFC; Mon, 29 Mar 2021 10:41:50 +0300 (EEST) From: Mika Westerberg To: linux-usb@vger.kernel.org Cc: Michael Jamet , Yehezkel Bernat , Andreas Noever , Lukas Wunner , Mario Limonciello , Christian Kellner , Benson Leung , Prashant Malani , Diego Rivas , Greg Kroah-Hartman , Mika Westerberg Subject: [PATCH v3 2/3] thunderbolt: Hide authorized attribute if router does not support PCIe tunnels Date: Mon, 29 Mar 2021 10:41:49 +0300 Message-Id: <20210329074150.62622-3-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210329074150.62622-1-mika.westerberg@linux.intel.com> References: <20210329074150.62622-1-mika.westerberg@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org With USB4 devices PCIe tunneling is optional so for device routers without PCIe upstream adapter it does not make much sense to expose the authorized attribute. For this reason hide it if PCIe tunneling is not supported by the device router. Signed-off-by: Mika Westerberg Reviewed-by: Greg Kroah-Hartman --- drivers/thunderbolt/switch.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index a1b4a695080e..fbcc920e327c 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -1746,6 +1746,18 @@ static struct attribute *switch_attrs[] = { NULL, }; +static bool has_port(const struct tb_switch *sw, enum tb_port_type type) +{ + const struct tb_port *port; + + tb_switch_for_each_port(sw, port) { + if (!port->disabled && port->config.type == type) + return true; + } + + return false; +} + static umode_t switch_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n) { @@ -1754,7 +1766,8 @@ static umode_t switch_attr_is_visible(struct kobject *kobj, if (attr == &dev_attr_authorized.attr) { if (sw->tb->security_level == TB_SECURITY_NOPCIE || - sw->tb->security_level == TB_SECURITY_DPONLY) + sw->tb->security_level == TB_SECURITY_DPONLY || + !has_port(sw, TB_TYPE_PCIE_UP)) return 0; } else if (attr == &dev_attr_device.attr) { if (!sw->device)