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=-3.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 3A4E0C5CFFE for ; Tue, 11 Dec 2018 15:35:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C7302082F for ; Tue, 11 Dec 2018 15:35:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0C7302082F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sntech.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726997AbeLKPfI (ORCPT ); Tue, 11 Dec 2018 10:35:08 -0500 Received: from gloria.sntech.de ([185.11.138.130]:45554 "EHLO gloria.sntech.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726646AbeLKPfH (ORCPT ); Tue, 11 Dec 2018 10:35:07 -0500 Received: from p5b127a5a.dip0.t-ipconnect.de ([91.18.122.90] helo=phil.localnet) by gloria.sntech.de with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gWk3P-0006zm-U2; Tue, 11 Dec 2018 16:34:35 +0100 From: Heiko Stuebner To: Brian Norris Cc: Sandy Huang , dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Sean Paul , Guenter Roeck , Jeffy Chen , Robin Murphy , Vicente Bergas , Marc Zyngier , stable@vger.kernel.org Subject: Re: [PATCH for-4.20] Revert "drm/rockchip: Allow driver to be shutdown on reboot/kexec" Date: Tue, 11 Dec 2018 16:34:35 +0100 Message-ID: <2584922.nx44hha6lV@phil> In-Reply-To: <20181205181657.177703-1-briannorris@chromium.org> References: <20181205181657.177703-1-briannorris@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Mittwoch, 5. Dezember 2018, 19:16:57 CET schrieb Brian Norris: > This reverts commit 7f3ef5dedb146e3d5063b6845781ad1bb59b92b5. > > It causes new warnings [1] on shutdown when running the Google Kevin or > Scarlet (RK3399) boards under Chrome OS. Presumably our usage of DRM is > different than what Marc and Heiko test. > > We're looking at a different approach (e.g., [2]) to replace this, but > IMO the revert should be taken first, as it already propagated to > -stable. > > [1] Report here: > http://lkml.kernel.org/lkml/20181205030127.GA200921@google.com > > WARNING: CPU: 4 PID: 2035 at drivers/gpu/drm/drm_mode_config.c:477 drm_mode_config_cleanup+0x1c4/0x294 > ... > Call trace: > drm_mode_config_cleanup+0x1c4/0x294 > rockchip_drm_unbind+0x4c/0x8c > component_master_del+0x88/0xb8 > rockchip_drm_platform_remove+0x2c/0x44 > rockchip_drm_platform_shutdown+0x20/0x2c > platform_drv_shutdown+0x2c/0x38 > device_shutdown+0x164/0x1b8 > kernel_restart_prepare+0x40/0x48 > kernel_restart+0x20/0x68 > ... > Memory manager not clean during takedown. > WARNING: CPU: 4 PID: 2035 at drivers/gpu/drm/drm_mm.c:950 drm_mm_takedown+0x34/0x44 > ... > drm_mm_takedown+0x34/0x44 > rockchip_drm_unbind+0x64/0x8c > component_master_del+0x88/0xb8 > rockchip_drm_platform_remove+0x2c/0x44 > rockchip_drm_platform_shutdown+0x20/0x2c > platform_drv_shutdown+0x2c/0x38 > device_shutdown+0x164/0x1b8 > kernel_restart_prepare+0x40/0x48 > kernel_restart+0x20/0x68 > ... > > [2] https://patchwork.kernel.org/patch/10556151/ > https://www.spinics.net/lists/linux-rockchip/msg21342.html > [PATCH] drm/rockchip: shutdown drm subsystem on shutdown > > Fixes: 7f3ef5dedb14 ("drm/rockchip: Allow driver to be shutdown on reboot/kexec") > Cc: Jeffy Chen > Cc: Robin Murphy > Cc: Vicente Bergas > Cc: Marc Zyngier > Cc: Heiko Stuebner > Cc: stable@vger.kernel.org > Signed-off-by: Brian Norris So, I've applied this revert to drm-misc-fixes now, so it should still land in 4.20-rc. I'll resurrect Vicentes patch for a later regular inclusion as well, but with more testing involved. Heiko