func: static void ehci_free_packet(EHCIPacket *p)
  
  {
  
      trace_usb_ehci_packet_action(p->queue, p, "free");
  
      if (p->async == EHCI_ASYNC_INFLIGHT) {
  
          usb_cancel_packet(&p->packet);
  
          usb_packet_unmap(&p->packet, &p->sgl);
  
          qemu_sglist_destroy(&p->sgl);
  
  
  
  
  
  
  
  
  
  
  
  
      QTAILQ_REMOVE(&p->queue->packets, p, next);
  
      usb_packet_cleanup(&p->packet);
  
      g_free(p);
  