add_substream_pair  164 sound/firewire/digi00x/digi00x-midi.c 	err = add_substream_pair(dg00x, DOT_MIDI_OUT_PORTS, DOT_MIDI_IN_PORTS,
add_substream_pair  170 sound/firewire/digi00x/digi00x-midi.c 		err = add_substream_pair(dg00x, 1, 1, true);