substream_open   1159 sound/usb/midi.c 	return substream_open(substream, 0, 1);
substream_open   1164 sound/usb/midi.c 	return substream_open(substream, 0, 0);
substream_open   1218 sound/usb/midi.c 	return substream_open(substream, 1, 1);
substream_open   1223 sound/usb/midi.c 	return substream_open(substream, 1, 0);