{
        if (USB_DeviceState != DEVICE_STATE_Configured)
          return ENDPOINT_RWSTREAM_DeviceDisconnected;
        
        Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.DataINEndpointNumber);
 
 {
        if (USB_DeviceState != DEVICE_STATE_Configured)
          return ENDPOINT_RWSTREAM_DeviceDisconnected;
        
        Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.DataINEndpointNumber);