We need to hold the rps lock around punit access.
Reported-by: NKenneth Graunke <kenneth@whitecape.org>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>