Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756007AbdDFTKx (ORCPT ); Thu, 6 Apr 2017 15:10:53 -0400 Received: from quartz.orcorp.ca ([184.70.90.242]:57174 "EHLO quartz.orcorp.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755366AbdDFTKh (ORCPT ); Thu, 6 Apr 2017 15:10:37 -0400 Date: Thu, 6 Apr 2017 13:10:13 -0600 From: Jason Gunthorpe To: Paul Menzel Cc: "Maciej S. Szmigiero" , tpmdd-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, GNUtoo@no-log.org Subject: Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on Lenovo X60 with coreboot Message-ID: <20170406191013.GA25011@obsidianresearch.com> References: <20170406165557.GD7657@obsidianresearch.com> <3d62bd7d4addc020c2f8e3c2edf3280e@molgen.mpg.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3d62bd7d4addc020c2f8e3c2edf3280e@molgen.mpg.de> User-Agent: Mutt/1.5.24 (2015-08-30) X-Broken-Reverse-DNS: no host name found for IP address 10.0.0.156 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 671 Lines: 17 On Thu, Apr 06, 2017 at 08:26:22PM +0200, Paul Menzel wrote: > >We added direct ACPI binding to the driver in addition to PNP, so if > >you have an ACPI table it goes down that path and does some additional > >validation of what is in the TPM. The BIOS must provide a > >acpi_dev_resource_memory and a ACPI_SIG_TPM2 for the ACPI entry at a > >minimum. > > Is it correct, that this is added in/for 4.11, so just recently? Testing > with Linux 4.10.8, everything is detected just fine. No, it is quite a bit older.. And it should only go for TPM2, which I don't think you have?? Maybe Jarkko has a guess, but sure sounds like something is recently broken in 4.11 Jason