diff options
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_iommu.c | 5 |
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) |