Use int for Bus/Addr, not uint8.

rawread/main.go

@@ -57,7 +57,7 @@ func parseVIDPID(vidPid string) (usb.ID, usb.ID, error) {
 	return usb.ID(vid), usb.ID(pid), nil
 }
 
-func parseBusAddr(busAddr string) (uint8, uint8, error) {
+func parseBusAddr(busAddr string) (int, int, error) {
 	s := strings.Split(busAddr, ":")
 	if len(s) != 2 {
 		return 0, 0, fmt.Errorf("want bus:addr, two 8-bit decimal unsigned integers separated by colon, e.g. 1:1")
@@ -70,7 +70,7 @@ func parseBusAddr(busAddr string) (uint8, uint8, error) {
 	if err != nil {
 		return 0, 0, fmt.Errorf("device address must be an 8-bit decimal unsigned integer")
 	}
-	return uint8(bus), uint8(addr), nil
+	return int(bus), int(addr), nil
 }
 
 func main() {
@@ -84,7 +84,7 @@ func main() {
 
 	var devName string
 	var vid, pid usb.ID
-	var bus, addr uint8
+	var bus, addr int
 	switch {
 	case *vidPID == "" && *busAddr == "":
 		log.Fatal("You need to specify the device through a --vidpid flag or through a --busaddr flag.")

usb/device.go

@@ -23,8 +23,8 @@ import (
 // Descriptor is a representation of a USB device descriptor.
 type Descriptor struct {
 	// Bus information
-	Bus     uint8 // The bus on which the device was detected
-	Address uint8 // The address of the device on the bus
+	Bus     int // The bus on which the device was detected
+	Address int // The address of the device on the bus
 
 	// Version information
 	Spec   BCD // USB Specification Release Number

usb/libusb.go

@@ -277,8 +277,8 @@ func (libusbImpl) getDeviceDesc(d *libusbDevice) (*Descriptor, error) {
 	}
 
 	return &Descriptor{
-		Bus:      uint8(C.libusb_get_bus_number((*C.libusb_device)(d))),
-		Address:  uint8(C.libusb_get_device_address((*C.libusb_device)(d))),
+		Bus:      int(C.libusb_get_bus_number((*C.libusb_device)(d))),
+		Address:  int(C.libusb_get_device_address((*C.libusb_device)(d))),
 		Spec:     BCD(desc.bcdUSB),
 		Device:   BCD(desc.bcdDevice),
 		Vendor:   ID(desc.idVendor),