From 41c3a74347f9d6dad0160b570601dc0c05511509 Mon Sep 17 00:00:00 2001 From: Ondrej Jirman Date: Sat, 24 Sep 2022 21:54:23 +0200 Subject: [PATCH 184/389] drm: rockchip: Fix panic on reboot when DRM device fails to bind When DRM device is freed, we need to clear the drvdata pointer, because it now points to invalid memory. Signed-off-by: Ondrej Jirman --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index 813f9f8c8698..bef501d49ef6 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -201,6 +201,7 @@ static int rockchip_drm_bind(struct device *dev) component_unbind_all(dev, drm_dev); err_free: drm_dev_put(drm_dev); + dev_set_drvdata(dev, NULL); return ret; } @@ -217,6 +218,7 @@ static void rockchip_drm_unbind(struct device *dev) rockchip_iommu_cleanup(drm_dev); drm_dev_put(drm_dev); + dev_set_drvdata(dev, NULL); } DEFINE_DRM_GEM_FOPS(rockchip_drm_driver_fops); -- 2.35.3