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