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@xxxxxxxxxx > > 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 <jeffy.chen@xxxxxxxxxxxxxx> > Cc: Robin Murphy <robin.murphy@xxxxxxx> > Cc: Vicente Bergas <vicencb@xxxxxxxxx> > Cc: Marc Zyngier <marc.zyngier@xxxxxxx> > Cc: Heiko Stuebner <heiko@xxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Brian Norris <briannorris@xxxxxxxxxxxx> 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
