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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 E9770C7618F for ; Mon, 22 Jul 2019 17:52:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C0C1321901 for ; Mon, 22 Jul 2019 17:52:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ft/LapNW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730408AbfGVRwG (ORCPT ); Mon, 22 Jul 2019 13:52:06 -0400 Received: from mail-pl1-f195.google.com ([209.85.214.195]:33737 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727021AbfGVRwG (ORCPT ); Mon, 22 Jul 2019 13:52:06 -0400 Received: by mail-pl1-f195.google.com with SMTP id c14so19448472plo.0 for ; Mon, 22 Jul 2019 10:52:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to :user-agent; bh=aEoRAiP0Qset6Jb+Jxb/ytHPdQ3hKUPOUha9WyAc5Hg=; b=ft/LapNWajj3I2oL5+IEKP/KVQL7zS/HExKEzm5ot6BkP+TysenQ1vzK0XIoHLsfjU JECu8v5BKylk+i0O9GnBc4m8PH9Fr4xHTE223q1s0KIeb+dzYzGWVGGNwFnu2rc6QY45 lTqBgn4hqGe+Hq8Q48YZ6PWE7Qoxusm/6KsZWmcWYIqcVtwW2z9uH2fBY/fYV357//YV dfoDxOyMxBrfo2j78VEh+Q1OVuDkdZ2Dc6dHINiwquIv3rNFKyQIYsu9pqzdh0Kh3sOa w8Idjjo+0tJZ2nsQB5KVRetoBfVHYY9eicmxewoKrMvmHEpWK4AYB2XXFHvl4sV6AU2F osTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition :content-transfer-encoding:in-reply-to:user-agent; bh=aEoRAiP0Qset6Jb+Jxb/ytHPdQ3hKUPOUha9WyAc5Hg=; b=Bi8awOEBQg1ISbHMEeJGGUy89JND54aNeZZG7bhg6v9v6ZxQmKORzIWi75CaSjRBNU veFzFQBzgVzdHX76u7o1e9vxWVnOxGkHPzAUVA6DDkdtW8FVHMO3hsU4TzQLgaiji2oD cCaI6TauvkWn2Aggl8HTx+1hxbcCI0SxGDz9TcuoMKLQ8QOMwo+bhQ6FewnT381Ax9kW lGslCvC9EAkpdW6M2os767XoGyKMWh0qPvc3a0Ym29dnlh5Ki62NcgGJfnBhN0D4ETrm 1BRiQXq0X8yl+OlE27sZDfljAZ2eY5ccQXeqzIttaThqIURffhEyq612tWF58XA95M/V lE0A== X-Gm-Message-State: APjAAAXA7dmLCF72WzrdptxRBDB2Qb90rJ71ChnpE4dm1Ok6MyWRpkVP SIPCztdA1bEwKq3kAt76dUH6vWlQ X-Google-Smtp-Source: APXvYqzvV834vX+epF4+aUGrrwlJ0JNGZ/8I9+brS3DsEprkt3HMRt8RWSWpbVx0525jChmw22BEeg== X-Received: by 2002:a17:902:2006:: with SMTP id n6mr78193360pla.232.1563817925778; Mon, 22 Jul 2019 10:52:05 -0700 (PDT) Received: from localhost ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id s185sm53981056pgs.67.2019.07.22.10.52.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 22 Jul 2019 10:52:04 -0700 (PDT) Date: Mon, 22 Jul 2019 10:52:03 -0700 From: Guenter Roeck To: Valentin =?utf-8?B?VmlkacSH?= Cc: linux-watchdog@vger.kernel.org Subject: Re: iTCO_wdt on Intel NUC Message-ID: <20190722175203.GA12554@roeck-us.net> References: <20190721203047.3jd6slko6guz52fl@valentin-vidic.from.hr> <20190722045557.tndjp4hnpngvlaql@valentin-vidic.from.hr> <20190722154549.GA5166@roeck-us.net> <20190722161026.3bzxwibivomuysqf@valentin-vidic.from.hr> <20190722162152.GB8122@roeck-us.net> <20190722174129.qzlg5exwx5ns3fkw@valentin-vidic.from.hr> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20190722174129.qzlg5exwx5ns3fkw@valentin-vidic.from.hr> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org On Mon, Jul 22, 2019 at 07:41:29PM +0200, Valentin Vidić wrote: > On Mon, Jul 22, 2019 at 09:21:52AM -0700, Guenter Roeck wrote: > > I suspect that the driver may be instantiated from two locations > > on your system. On top of that, there is also wdat_wdt, which > > instantiates a watchdog device through ACPI. Overall there are lots > > of areas where things can go wrong with this driver. > > Yes, it seems to be related to i2c_i801 because that tries to > load iTCO_wdt: > > # modprobe i2c_i801 > [40450.070587] i801_smbus 0000:00:1f.4: SPD Write Disable is set > [40450.070652] i801_smbus 0000:00:1f.4: SMBus using PCI interrupt > [40450.072919] iTCO_vendor_support: vendor-support=0 > [40450.073485] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11 > [40450.073546] iTCO_wdt iTCO_wdt: can't request region for resource [mem 0x00c5fffc-0x00c5ffff] > [40450.073578] iTCO_wdt: probe of iTCO_wdt failed with error -16 > Is this the first mention of iTCO_wdt in the log ? The easiest explanation that this point would be that lpc_ich instantiates iTCO_wdt as well. Guenter