From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:48878 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730483AbeLTJZv (ORCPT ); Thu, 20 Dec 2018 04:25:51 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jeffy Chen , Robin Murphy , Vicente Bergas , Marc Zyngier , Heiko Stuebner , Brian Norris Subject: [PATCH 4.14 16/72] Revert "drm/rockchip: Allow driver to be shutdown on reboot/kexec" Date: Thu, 20 Dec 2018 10:18:15 +0100 Message-Id: <20181220085922.969931485@linuxfoundation.org> In-Reply-To: <20181220085922.332225035@linuxfoundation.org> References: <20181220085922.332225035@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Brian Norris commit 63238173b2faf3d6b85a416f1c69af6c7be2413f upstream. 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 Signed-off-by: Heiko Stuebner Link: https://patchwork.freedesktop.org/patch/msgid/20181205181657.177703-1-briannorris@chromium.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 6 ------ 1 file changed, 6 deletions(-) --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -425,11 +425,6 @@ static int rockchip_drm_platform_remove( return 0; } -static void rockchip_drm_platform_shutdown(struct platform_device *pdev) -{ - rockchip_drm_platform_remove(pdev); -} - static const struct of_device_id rockchip_drm_dt_ids[] = { { .compatible = "rockchip,display-subsystem", }, { /* sentinel */ }, @@ -439,7 +434,6 @@ MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ static struct platform_driver rockchip_drm_platform_driver = { .probe = rockchip_drm_platform_probe, .remove = rockchip_drm_platform_remove, - .shutdown = rockchip_drm_platform_shutdown, .driver = { .name = "rockchip-drm", .of_match_table = rockchip_drm_dt_ids,