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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 C4F72C433E0 for ; Thu, 9 Jul 2020 19:17:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A241207DD for ; Thu, 9 Jul 2020 19:17:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594322245; bh=yzF+W3NuN5vHb++Eg1LQozRb7Fnun3QKYsoWUnQhzUE=; h=Date:From:To:Cc:Subject:List-ID:From; b=AnCBEdX3n0n+OP9xvOZhFmR17ZLHDTfvVZ/DNWoAV+KAb3IRNT+GUxzxLQIYnE3Ed tMZBqlZn13Uv/Cr2cSNJg/MxFATGeg0R8PYn8pY0+oJ3zkm+EYjny9XiVWRhZRrNkQ Z0Up/FU9HwaBgrE3fJLi/T0HQpbFYY0hWcvoU25c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726215AbgGITRZ (ORCPT ); Thu, 9 Jul 2020 15:17:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:48078 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726116AbgGITRY (ORCPT ); Thu, 9 Jul 2020 15:17:24 -0400 Received: from localhost (mobile-166-175-191-139.mycingular.net [166.175.191.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 03BF82078B; Thu, 9 Jul 2020 19:17:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594322244; bh=yzF+W3NuN5vHb++Eg1LQozRb7Fnun3QKYsoWUnQhzUE=; h=Date:From:To:Cc:Subject:From; b=gCdmvTrnzGIBRoy4hFgZ+BfEmqkT/cSJ/Bu1ILlPEUpcyxKfT1McFFER3/97eUY9k EQU7VL7vbC1FrjAlSQenhcPoaNZfw+jqLXei6s5ihxh/sGCcOCVgOIGUEPehnnxZig dFXI9Ud4J74JkiJKle4uF7vVODVTwYXy7t7GAHh4= Date: Thu, 9 Jul 2020 14:17:22 -0500 From: Bjorn Helgaas To: Sean V Kelley Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Thomas Gleixner , Berni Subject: [bugzilla-daemon@bugzilla.kernel.org: [Bug 208507] New: BISECTED: i2c timeout loading module ddbridge with commit d2345d1231d80ecbea5fb764eb43123440861462] Message-ID: <20200709191722.GA6054@bjorn-Precision-5520> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Bisected to Debian commit d2345d1231d8, which is a backport of the upstream commit b88bf6c3b6ff ("PCI: Add boot interrupt quirk mechanism for Xeon chipsets"). Reporter confirmed that reverting the Debian backport from 4.19.132 fixes the problem. ----- Forwarded message from bugzilla-daemon@bugzilla.kernel.org ----- Date: Thu, 09 Jul 2020 15:01:11 +0000 From: bugzilla-daemon@bugzilla.kernel.org To: bjorn@helgaas.com Subject: [Bug 208507] New: BISECTED: i2c timeout loading module ddbridge with commit d2345d1231d80ecbea5fb764eb43123440861462 Message-ID: https://bugzilla.kernel.org/show_bug.cgi?id=208507 Bug ID: 208507 Summary: BISECTED: i2c timeout loading module ddbridge with commit d2345d1231d80ecbea5fb764eb43123440861462 Product: Drivers Version: 2.5 Kernel Version: 4.19.132 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: PCI Assignee: drivers_pci@kernel-bugs.osdl.org Reporter: bernhard@turmann.eu Regression: Yes Created attachment 290179 --> https://bugzilla.kernel.org/attachment.cgi?id=290179&action=edit dmesg on 4.19.132 OS: Debian 10.4 Buster CPU: Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz Hardware: Supermicro Super Server Mainboard: Supermicro X10SDV DVB card: Digital Devices Cine S2 V7 Advanced DVB adapter Issue: ===== Loading kernel module ddbridge fails with i2c timeouts, see attached dmesg. The dvb media adapter is unusable. This happened after Linux kernel upgrade from 4.19.98-1+deb10u1 to 4.19.118-2+deb10u1. A git bisect based on the Debian kernel repo on branch buster identified as first bad commit: [1fb0eb795661ab9e697c3a053b35aa4dc3b81165] Update to 4.19.116. Another git bisect based on upstream Linux kernel repo on branch v4.19.y identified as first bad commit: [d2345d1231d80ecbea5fb764eb43123440861462] PCI: Add boot interrupt quirk mechanism for Xeon chipsets. Other affected Debian kernel version: 5.6.14+2~bpo10+1 I tested this version via buster-backports, because so far I was unable to build my own kernel from 5.6.y or even 5.7.y. Workaround: ========== Reverting the mentioned commit d2345d1231d80ecbea5fb764eb43123440861462 on top of 4.19.132 is fixing the problem. Reverting the same commit on 4.19.118 or 4.19.116 is also fixing the problem. It seems, I can only add one attachment now, so I will add more attachments later after bug is submitted. Thanks and Regards Berni -- You are receiving this mail because: You are watching the assignee of the bug. ----- End forwarded message -----