alt_next
td_alt_next = td->alt_next;
td = td->alt_next;
if (td->alt_next != td_alt_next) {
if (td->alt_next) {
td = td->alt_next;
td->alt_next = td_alt_next;
struct ehci_qtd *alt_next;
td->alt_next = td_alt_next;
td_alt_next = td->alt_next;
td = td->alt_next;
if (td->alt_next != td_alt_next) {
td = td->alt_next;
struct ohci_td *alt_next;
td_alt_next = td->alt_next;
td = td->alt_next;
if (td->alt_next != td_alt_next) {
td = td->alt_next;
td_alt_next = td->alt_next;
if (td->alt_next != td_alt_next) {
if (td->alt_next) {
td->alt_next = td_alt_next;
if (td->alt_next == NULL) {
xfer->td_transfer_cache = td->alt_next;
td->alt_next = td_alt_next;
td_alt_next = td->alt_next;
td = td->alt_next;
if (td->alt_next != td_alt_next) {
td = td->alt_next;
struct xhci_td *alt_next;