ring_buff_write_ptr_pos_get
ring_buff_write_ptr_pos_get(softc_p->ring_buff_p);
write_ptr_pos = ring_buff_write_ptr_pos_get(ring_buff_p);
write_ptr_pos = ring_buff_write_ptr_pos_get(ring_buff_p);
if ((ring_buff_write_ptr_pos_get(ring_buff_p) ==
write_pos = ring_buff_write_ptr_pos_get(softc_p->ring_buff_p);
size_t ring_buff_write_ptr_pos_get(ring_buff_t *ring_buff_p);