diff mbox series

drm/exynos: Clear drvdata after component unbind

Message ID 20171009084401.7237-1-m.szyprowski@samsung.com
State Accepted
Commit 238604ca0b708319e089e22545bcda39afb5faa8
Headers show
Series drm/exynos: Clear drvdata after component unbind | expand

Commit Message

Marek Szyprowski Oct. 9, 2017, 8:44 a.m. UTC 
When components are unbound, DRM driver is unregistered and freed,
so clear drvdata to avoid potential use-after-free issue in
suspend/resume paths.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

---
 drivers/gpu/drm/exynos/exynos_drm_drv.c | 1 +
 1 file changed, 1 insertion(+)

-- 
2.14.2

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diff mbox series

Patch

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index aa770bb0153c..82b72425a42f 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -430,6 +430,7 @@  static void exynos_drm_unbind(struct device *dev)
 
 	kfree(drm->dev_private);
 	drm->dev_private = NULL;
+	dev_set_drvdata(dev, NULL);
 
 	drm_dev_unref(drm);
 }