diff options
Diffstat (limited to 'include/drm/drmP.h')
| -rw-r--r-- | include/drm/drmP.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 5ebed3ea10b..5dc98947375 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -665,7 +665,16 @@ struct drm_gem_object { /* dma buf exported from this GEM object */ struct dma_buf *export_dma_buf; - /* dma buf attachment backing this object */ + /** + * import_attach - dma buf attachment backing this object + * + * Any foreign dma_buf imported as a gem object has this set to the + * attachment point for the device. This is invariant over the lifetime + * of a gem object. + * + * The driver's ->gem_free_object callback is responsible for cleaning + * up the dma_buf attachment and references acquired at import time. + */ struct dma_buf_attachment *import_attach; }; |