drm/exynos/ipp: traverse ipp drivers list safely

On ipp subsystem removal list of ipp drivers is traversed
and their members are deleted. To do it properly safe version
of list_for_each* should be used.

Signed-off-by: Andrzej Hajda <[email protected]>
Signed-off-by: Inki Dae <[email protected]>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_ipp.c b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
index 4f36a9d919261fd5c9bc18e6a8beba0aef34efef..00d74b18f7cbd841f88d252d57ca47eb5d768863 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_ipp.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_ipp.c
@@ -1605,11 +1605,11 @@ err:
 
 static void ipp_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
 {
-       struct exynos_drm_ippdrv *ippdrv;
+       struct exynos_drm_ippdrv *ippdrv, *t;
        struct ipp_context *ctx = get_ipp_context(dev);
 
        /* get ipp driver entry */
-       list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list) {
+       list_for_each_entry_safe(ippdrv, t, &exynos_drm_ippdrv_list, drv_list) {
                if (is_drm_iommu_supported(drm_dev))
                        drm_iommu_detach_device(drm_dev, ippdrv->dev);