[PATCH] drm/rockchip: Fix panic on reboot when DRM device fails to bind
From: Ondřej Jirman <megi@xff.cz>
Date: 2026-07-25 12:04:12
Also in:
linux-rockchip, lkml
Subsystem:
arm/rockchip soc support, drm drivers, drm drivers and misc gpu patches, drm drivers for rockchip, the rest · Maintainers:
Heiko Stuebner, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Sandy Huang, Heiko Stübner, Andy Yan, Linus Torvalds
From: Ondrej Jirman <megi@xff.cz> When DRM device is freed, we need to clear the drvdata pointer, because it now points to invalid memory. Signed-off-by: Ondrej Jirman <megi@xff.cz> --- 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 3099408e9d05..8b9992843162 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c@@ -210,6 +210,7 @@ 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; }
@@ -226,6 +227,7 @@ 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);
--
2.54.0