usbmidi_out_port 564 sound/usb/usbmidi.c struct usbmidi_out_port* port = &ep->ports[p]; usbmidi_out_port 799 sound/usb/usbmidi.c struct usbmidi_out_port* port = &ep->ports[portnum]; usbmidi_out_port 846 sound/usb/usbmidi.c struct usbmidi_out_port* port = NULL; usbmidi_out_port 872 sound/usb/usbmidi.c struct usbmidi_out_port* port = (struct usbmidi_out_port*)substream->runtime->private_data;