// Parent returns the parent Device, or nil if the receiver has no parent Device
func (d *Device) Parent() *Device {
d.lock()
defer d.unlock()
ptr := C.udev_device_get_parent(d.ptr)
if ptr != nil {
C.udev_device_ref(ptr)
}
return d.u.newDevice(ptr)
}
// ParentWithSubsystemDevtype returns the parent Device with the given subsystem and devtype,
// or nil if the receiver has no such parent device
func (d *Device) ParentWithSubsystemDevtype(subsystem, devtype string) *Device {
d.lock()
defer d.unlock()
ss, dt := C.CString(subsystem), C.CString(devtype)
defer freeCharPtr(ss)
defer freeCharPtr(dt)
ptr := C.udev_device_get_parent_with_subsystem_devtype(d.ptr, ss, dt)
if ptr != nil {
C.udev_device_ref(ptr)
}
return d.u.newDevice(ptr)
}