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=-4.0 required=3.0 tests=BAYES_00,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 83E16C3CFC2 for ; Tue, 8 Dec 2020 20:23:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61FEF2388C for ; Tue, 8 Dec 2020 20:23:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728147AbgLHUXA convert rfc822-to-8bit (ORCPT ); Tue, 8 Dec 2020 15:23:00 -0500 Received: from mail.kernel.org ([198.145.29.99]:38288 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728750AbgLHUW6 (ORCPT ); Tue, 8 Dec 2020 15:22:58 -0500 From: bugzilla-daemon@bugzilla.kernel.org Authentication-Results: mail.kernel.org; dkim=permerror (bad message/signature format) To: linux-usb@vger.kernel.org Subject: [Bug 210565] New: Regression: Upgrading from 5.9.8 to 5.9.9 stops ME906s LTE mobile modem from working. Date: Tue, 08 Dec 2020 20:22:17 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: high X-Bugzilla-Who: nelg@linuxsolutions.co.nz X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version cf_kernel_version rep_platform op_sys cf_tree bug_status bug_severity priority component assigned_to reporter cf_regression Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=210565 Bug ID: 210565 Summary: Regression: Upgrading from 5.9.8 to 5.9.9 stops ME906s LTE mobile modem from working. Product: Drivers Version: 2.5 Kernel Version: 5.9.9 Hardware: Intel OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: USB Assignee: drivers_usb@kernel-bugs.kernel.org Reporter: nelg@linuxsolutions.co.nz Regression: No The device: 12d1:15c1 Huawei Technologies Co., Ltd. ME906s LTE M.2 Module has been working perfectly, up until kernel release 5.9.9. On 5.9.9, I get errors like: Dec 09 08:40:25 x1 NetworkManager[531]: [1607456425.9474] device (cdc-wdm0): Activation: successful, device activated. Dec 09 08:40:41 x1 ModemManager[570]: [/dev/cdc-wdm0] unexpected port hangup! Dec 09 08:40:41 x1 ModemManager[570]: [/dev/cdc-wdm0] channel destroyed Dec 09 08:40:41 x1 ModemManager[570]: [modem2] connection to mbim-proxy for /dev/cdc-wdm0 lost, reprobing Dec 09 08:40:41 x1 NetworkManager[531]: [1607456441.0644] device (cdc-wdm0): state change: activated -> unmanaged (reason 'removed', sys-iface-state: 'removed') Dec 09 08:41:06 x1 kernel: cdc_ether 1-2:2.0 wwan0: register 'cdc_ether' at usb-0000:00:14.0-2, Mobile Broadband Network Device, 02:1e:10:1f:00:00 Dec 09 08:41:06 x1 kernel: usbcore: registered new interface driver cdc_ether Dec 09 08:41:06 x1 kernel: cdc_ether 1-2:2.0 wwp0s20f0u2c2: renamed from wwan0 Dec 09 08:41:07 x1 kernel: cdc_ether 1-2:2.0 wwp0s20f0u2c2: unregister 'cdc_ether' usb-0000:00:14.0-2, Mobile Broadband Network Device It works fine if I downgrade to 5.9.8. I have also tested 5.9.10, 5.9.11 and 5.9.12, all of which this device no longer works. I can see commit ebc047afe9d2f04fdfd81d74e6c32bb3671b4670 in the change log that touches the cdc driver, so wonder if this is related. -- You are receiving this mail because: You are watching the assignee of the bug.