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=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 1BB8FC433E7 for ; Mon, 12 Oct 2020 19:52:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B325E2087E for ; Mon, 12 Oct 2020 19:52:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729253AbgJLTwP (ORCPT ); Mon, 12 Oct 2020 15:52:15 -0400 Received: from ms-10.1blu.de ([178.254.4.101]:57284 "EHLO ms-10.1blu.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726676AbgJLTwP (ORCPT ); Mon, 12 Oct 2020 15:52:15 -0400 Received: from [37.201.5.97] (helo=[192.168.1.61]) by ms-10.1blu.de with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kS3rb-0005HB-0n; Mon, 12 Oct 2020 21:52:07 +0200 To: linux-i2c@vger.kernel.org Cc: hdegoede@redhat.com, mika.westerberg@linux.intel.com, wsa@kernel.org, sashal@kernel.org From: Rainer Finke Subject: [Bug 209627] Touchscreen doesn't work anymore since commit 21653a4181ff292480599dad996a2b759ccf050f (regression) Message-ID: Date: Mon, 12 Oct 2020 21:52:06 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:82.0) Gecko/20100101 Thunderbird/82.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Con-Id: 198604 X-Con-U: 0-mail X-Originating-IP: 37.201.5.97 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org After upgrading from Linux 5.4.68 to Linux 5.4.69, the touchscreen of my Huawei Matebook 12 doesn't work anymore. The same issue happens with Linux >= 5.8.13. I've compiled Linux from git to verify if it was fixed, but it doesn't help. But when reverting the commit 21653a4181ff292480599dad996a2b759ccf050f the touchscreen works fine again. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.8.13&id=953fc770d069b167266d9d9ccfef0455fcfdc070 For reference my bug reports: https://bugzilla.kernel.org/show_bug.cgi?id=209627 https://bugs.archlinux.org/task/68178#comment193400 Hardware: - CPU Intel Core m3-6Y30 - GPU Intel Graphics 515 Sorry, I had to resend this message, it was rejected due to some automatic html encoding. Thank you Rainer Finke