diff options
| -rw-r--r-- | hw/usb/hcd-ehci.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c index eca1431bff..017342b56a 100644 --- a/hw/usb/hcd-ehci.c +++ b/hw/usb/hcd-ehci.c @@ -1987,10 +1987,19 @@ static int ehci_state_fetchqtd(EHCIQueue *q) ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH); again = 1; } else if (p != NULL) { - if (p->async == EHCI_ASYNC_INFLIGHT) { + switch (p->async) { + case EHCI_ASYNC_NONE: + /* Previously nacked packet (likely interrupt ep) */ + ehci_set_state(q->ehci, q->async, EST_EXECUTE); + break; + case EHCI_ASYNC_INFLIGHT: + /* Unfinyshed async handled packet, go horizontal */ ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH); - } else { + break; + case EHCI_ASYNC_FINISHED: + /* Should never happen, as this case is caught by fetchqh */ ehci_set_state(q->ehci, q->async, EST_EXECUTING); + break; } again = 1; } else { |