From patchwork Wed Nov 4 14:00:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 11880717 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 B3EC5697 for ; Wed, 4 Nov 2020 14:01:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9AB7121734 for ; Wed, 4 Nov 2020 14:01:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730158AbgKDOAf (ORCPT ); Wed, 4 Nov 2020 09:00:35 -0500 Received: from mga11.intel.com ([192.55.52.93]:11983 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730074AbgKDOAe (ORCPT ); Wed, 4 Nov 2020 09:00:34 -0500 IronPort-SDR: yGGcITX5S5aUVzuNfIu10xaHHyvhrORMg7CCWSTapSKNHpAQPUrdIec468AVK5uV21iKJh+bR4 FU3mLDcfWxzg== X-IronPort-AV: E=McAfee;i="6000,8403,9794"; a="165711170" X-IronPort-AV: E=Sophos;i="5.77,451,1596524400"; d="scan'208";a="165711170" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Nov 2020 06:00:33 -0800 IronPort-SDR: SMt0g0IDCdg3TgoxxBQ+WVpNwYkpkSq/7d90U6faiPxZnf5ffOfgpsqBGirdeqTfia6/b9Cq2G XuQ9ctNSkOXA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,451,1596524400"; d="scan'208";a="306424180" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga007.fm.intel.com with ESMTP; 04 Nov 2020 06:00:31 -0800 Received: by black.fi.intel.com (Postfix, from userid 1001) id F19411C5; Wed, 4 Nov 2020 16:00:30 +0200 (EET) From: Mika Westerberg To: linux-usb@vger.kernel.org Cc: Michael Jamet , Yehezkel Bernat , Andreas Noever , Isaac Hazan , Lukas Wunner , "David S . Miller" , Mika Westerberg , netdev@vger.kernel.org Subject: [PATCH 03/10] thunderbolt: Create XDomain devices for loops back to the host Date: Wed, 4 Nov 2020 17:00:23 +0300 Message-Id: <20201104140030.6853-4-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201104140030.6853-1-mika.westerberg@linux.intel.com> References: <20201104140030.6853-1-mika.westerberg@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org It is perfectly possible to have loops back from the routers to the host, or even from one host port to another. Instead of ignoring these, we create XDomain devices for each. This allows creating services such as DMA traffic test that is used in manufacturing for example. Signed-off-by: Mika Westerberg --- drivers/thunderbolt/xdomain.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c index e2866248f389..7c61d2aeaac9 100644 --- a/drivers/thunderbolt/xdomain.c +++ b/drivers/thunderbolt/xdomain.c @@ -960,10 +960,8 @@ static void tb_xdomain_get_uuid(struct work_struct *work) return; } - if (uuid_equal(&uuid, xd->local_uuid)) { + if (uuid_equal(&uuid, xd->local_uuid)) dev_dbg(&xd->dev, "intra-domain loop detected\n"); - return; - } /* * If the UUID is different, there is another domain connected