From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 DA0ABC2D0BF for ; Tue, 10 Dec 2019 12:34:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B16C920838 for ; Tue, 10 Dec 2019 12:34:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727778AbfLJMeN (ORCPT ); Tue, 10 Dec 2019 07:34:13 -0500 Received: from mga07.intel.com ([134.134.136.100]:31868 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727325AbfLJMeM (ORCPT ); Tue, 10 Dec 2019 07:34:12 -0500 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Dec 2019 04:34:11 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,299,1571727600"; d="scan'208";a="220214100" Received: from lahna.fi.intel.com (HELO lahna) ([10.237.72.163]) by fmsmga001.fm.intel.com with SMTP; 10 Dec 2019 04:34:09 -0800 Received: by lahna (sSMTP sendmail emulation); Tue, 10 Dec 2019 14:34:08 +0200 Date: Tue, 10 Dec 2019 14:34:08 +0200 From: "mika.westerberg@linux.intel.com" To: Nicholas Johnson Cc: Bjorn Helgaas , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" Subject: Re: Linux v5.5 serious PCI bug Message-ID: <20191210123408.GD2665@lahna.fi.intel.com> References: <20191209131239.GP2665@lahna.fi.intel.com> <20191210072800.GY2665@lahna.fi.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 10, 2019 at 12:00:23PM +0000, Nicholas Johnson wrote: > The following is the culprit responsible for the issues: > > commit 586bc4aab878efcf672536f0cdec3d04b6990c94 > Author: Alex Deucher > Date: Fri Nov 22 16:43:50 2019 -0500 > > ALSA: hda/hdmi - fix vgaswitcheroo detection for AMD > > It is playing with PCI devices. Clearly they did not consider > hot-removal. I am guessing it is seeing the audio PCI func of the AMD > card in that Thunderbolt eGPU enclosure. > > I will collect information, make a bugzilla report and contact the AMD > team. If anybody wants to be cc'd in then let me know. Sorry for > bothering you and Bjorn with something which actually has nothing > directly to do with the PCI subsystem or Thunderbolt. No problem. Thanks for taking time to bisect the issue.