Documentation/gpu/drm-mm.rst includes from include/drm/drm_syncobj.h with
:export:, but this is a header file without export directives. That
results in this warning:
./include/drm/drm_syncobj.h:1: warning: no structured comments found
...and a failure to obtain the documentation from that file. Switch to
:internal: instead to make both problems go away.
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>