polled_device_t
static polled_device_t polled_input_device;
static polled_device_t polled_output_device;
_NOTE(MUTEX_PROTECTS_DATA(polled_device_t::polled_device_lock,
polled_device_t))
static polled_device_t polled_input_device;
static polled_device_t polled_output_device;
_NOTE(MUTEX_PROTECTS_DATA(polled_device_t::polled_device_lock,
polled_device_t))