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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 C641FC32793 for ; Sat, 28 Sep 2019 17:48:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A2EDE20880 for ; Sat, 28 Sep 2019 17:48:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728617AbfI1Rsk (ORCPT ); Sat, 28 Sep 2019 13:48:40 -0400 Received: from sauhun.de ([88.99.104.3]:36250 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725965AbfI1Rsk (ORCPT ); Sat, 28 Sep 2019 13:48:40 -0400 Received: from localhost (unknown [46.183.103.17]) by pokefinder.org (Postfix) with ESMTPSA id B52AB2C0489; Sat, 28 Sep 2019 19:48:26 +0200 (CEST) Date: Sat, 28 Sep 2019 19:48:08 +0200 From: Wolfram Sang To: Lee Jones Cc: alokc@codeaurora.org, agross@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, bjorn.andersson@linaro.org, vkoul@kernel.org, linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org Subject: Re: [RESEND v3 1/1] i2c: qcom-geni: Disable DMA processing on the Lenovo Yoga C630 Message-ID: <20190928174801.GA2196@kunai> References: <20190905192412.23116-1-lee.jones@linaro.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="jRHKVT23PllUwdXP" Content-Disposition: inline In-Reply-To: <20190905192412.23116-1-lee.jones@linaro.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org --jRHKVT23PllUwdXP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Sep 05, 2019 at 08:24:12PM +0100, Lee Jones wrote: > We have a production-level laptop (Lenovo Yoga C630) which is exhibiting > a rather horrific bug. When I2C HID devices are being scanned for at > boot-time the QCom Geni based I2C (Serial Engine) attempts to use DMA. > When it does, the laptop reboots and the user never sees the OS. >=20 > Attempts are being made to debug the reason for the spontaneous reboot. > No luck so far, hence the requirement for this hot-fix. This workaround > will be removed once we have a viable fix. >=20 > Signed-off-by: Lee Jones Applied to for-current, thanks! --jRHKVT23PllUwdXP Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAl2PnM0ACgkQFA3kzBSg KbZ89w//RAjbjnkY/ZBQx8eGD0B0WRlQ/Yu+vD3JZxj+76bqaqqvw0Y/uidr6l9T nGCdfBF7lGcxgO2tmfUVLNLVCmjcBi44XuVDeDbruWPqwpAoGLJ5rw+vzczavdE1 l39g8hyiwCMZcvjAbdM03AlY/ARdt2a5noIvkKn22gtu1m/66+7BUEGc2YlpoBiO 9SuFmlSHS2xG6SvJFeMid+CIAagC5Bz6gFo6us3oI54Wr+qZ/cOfIuVZwSzeY1RC Bcn0SkLYH0SmCEJzam5lDufEXW8tgvSB/Jr8FGX2AU+kNLAa2/EEfgf4WLc2adyF WiMzCrLX88KIEQc3XTCKTV7mHLuOzD+l7rskpIxbt2Rauk8OB1Wf9N4A0XUd5+zs IjLmKmJ/KfmYiZnXkaRAfybx2z+TNfdPm3/wr9eJrWDuM5KJsjc8y/V5haUnRr1q eg+Gt7QMz0TGgwAT8OBoSFugaQqrLw+XbMR57leVkhQGkJ4BZgQIUj4q8tI6eevt t0KlF/S8VEHLbhWmwUR1A8iz493/GAQnBbXqOMKRauX4IsIcLa2y3nFsBkVRbqyE 4anx/8psj9PsyOpa6hyyJNVY2GXOIvudeWze81sHJq7scz5l8T7VkiCYCp8s1Td1 lEa7CgP0PIg2dXpA6n+iQqBYP+B3S2WZbHqiel3sQYZ6GzkafVA= =0des -----END PGP SIGNATURE----- --jRHKVT23PllUwdXP--