[PATCH] drm/exynos: Clear drvdata after component unbind

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(+)

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); }