diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c
index 66f7dc37b5970c0a08f8dde008aef56376c59f37..cba527571ca66d3aa6dc652c87e03a19815d1d41 100644
--- a/drivers/gpu/drm/drm_mode_config.c
+++ b/drivers/gpu/drm/drm_mode_config.c
@@ -187,10 +187,14 @@ int drm_mode_getresources(struct drm_device *dev, void *data,
  * @dev: drm device
  *
  * This functions calls all the crtc's, encoder's and connector's ->reset
  * callback. Drivers can use this in e.g. their driver load or resume code to
  * reset hardware and software state.
+ *
+ * Note that @drm_private_obj structures are expected to be stable across
+ * suspend/resume cycles, and @drm_mode_config_reset() does not affect these
+ * structures.
  */
 void drm_mode_config_reset(struct drm_device *dev)
 {
 	struct drm_crtc *crtc;
 	struct drm_colorop *colorop;