1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.c b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
index 1e82529e0c41..36dde9691274 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_iommu.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
@@ -97,6 +97,11 @@ int drm_iommu_attach_device(struct drm_device *drm_dev,
         if (!priv->mapping)
                 return 0;
 
+        if (get_dma_ops(priv->dma_dev) != get_dma_ops(subdrv_dev)) {
+                DRM_ERROR("Device %s lacks support for IOMMU\n",
+                          dev_name(subdrv_dev));
+                return -EINVAL;
+        }
 
         ret = configure_dma_max_seg_size(subdrv_dev);
         if (ret)