diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.h b/drivers/gpu/drm/exynos/exynos_drm_iommu.h
index 8341c7a475b4..a90357fc163d 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_iommu.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_iommu.h
@@ -29,13 +29,9 @@ void drm_iommu_detach_device(struct drm_device *dev_dev,
 
 static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
 {
-#ifdef CONFIG_ARM_DMA_USE_IOMMU
 	struct device *dev = drm_dev->dev;
 
 	return dev->archdata.mapping ? true : false;
-#else
-	return false;
-#endif
 }
 
 int drm_iommu_attach_device_if_possible(