diff --git a/Documentation/media/conf_nitpick.py b/Documentation/media/conf_nitpick.py
index 1f3ef3ded2d438c52bae655049eae3afd24939e8..f71bb947eb1505600826f755de2df8c9f6c5f7eb 100644
--- a/Documentation/media/conf_nitpick.py
+++ b/Documentation/media/conf_nitpick.py
@@ -98,4 +98,8 @@ nitpick_ignore = [
     ("c:type", "usb_interface"),
     ("c:type", "v4l2_std_id"),
     ("c:type", "video_system_t"),
+
+    # Opaque structures
+
+    ("c:type", "v4l2_m2m_dev"),
 ]