IWH_MAX_WIN_SIZE
if (ring->queued > ring->count - IWH_MAX_WIN_SIZE) {
if (ring->desc_cur < IWH_MAX_WIN_SIZE) {
if (ring->cur < IWH_MAX_WIN_SIZE) {
if (ring->cur < IWH_MAX_WIN_SIZE) {
IWH_MAX_WIN_SIZE];