USBDevice *usb_host_device_open(USBBus *bus, const char *devname) { struct USBAutoFilter filter; USBDevice *dev; char *p; dev = usb_create(bus, "usb-host"); if (strstr(devname, "auto:")) { if (parse_filter(devname, &filter) < 0) { goto fail; } } else { p = strchr(devname, '.'); if (p) { filter.bus_num = strtoul(devname, NULL, 0); filter.addr = strtoul(p + 1, NULL, 0); filter.vendor_id = 0; filter.product_id = 0; } else { p = strchr(devname, ':'); if (p) { filter.bus_num = 0; filter.addr = 0; filter.vendor_id = strtoul(devname, NULL, 16); filter.product_id = strtoul(p + 1, NULL, 16); } else { goto fail; } } } qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num); qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr); qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id); qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id); qdev_init_nofail(&dev->qdev); return dev; fail: object_unparent(OBJECT(dev)); return NULL; }