+
+ if (ehci->use_dummy_qh) {
+ struct ehci_qh_hw *hw;
+ ehci->dummy = ehci_qh_alloc(ehci, flags);
+ if (!ehci->dummy)
+ goto fail;
+
+ hw = ehci->dummy->hw;
+ hw->hw_next = EHCI_LIST_END(ehci);
+ hw->hw_qtd_next = EHCI_LIST_END(ehci);
+ hw->hw_alt_next = EHCI_LIST_END(ehci);
+ hw->hw_token &= ~QTD_STS_ACTIVE;
+ ehci->dummy->hw = hw;
+
+ for (i = 0; i < ehci->periodic_size; i++)
+ ehci->periodic[i] = ehci->dummy->qh_dma;
+ } else {
+ for (i = 0; i < ehci->periodic_size; i++)
+ ehci->periodic[i] = EHCI_LIST_END(ehci);
+ }