diff options
Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 6887aac5e73d..d7e85b6231b3 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -863,12 +863,18 @@ static void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh) if (!HC_IS_RUNNING(ehci_to_hcd(ehci)->state) && ehci->reclaim) end_unlink_async(ehci); - /* if it's not linked then there's nothing to do */ - if (qh->qh_state != QH_STATE_LINKED) - ; + /* If the QH isn't linked then there's nothing we can do + * unless we were called during a giveback, in which case + * qh_completions() has to deal with it. + */ + if (qh->qh_state != QH_STATE_LINKED) { + if (qh->qh_state == QH_STATE_COMPLETING) + qh->needs_rescan = 1; + return; + } /* defer till later if busy */ - else if (ehci->reclaim) { + if (ehci->reclaim) { struct ehci_qh *last; for (last = ehci->reclaim; @@ -1001,6 +1007,7 @@ rescan: qh->qh_state = QH_STATE_IDLE; switch (qh->qh_state) { case QH_STATE_LINKED: + case QH_STATE_COMPLETING: for (tmp = ehci->async->qh_next.qh; tmp && tmp != qh; tmp = tmp->qh_next.qh) @@ -1065,7 +1072,8 @@ ehci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep) usb_settoggle(qh->dev, epnum, is_out, 0); if (!list_empty(&qh->qtd_list)) { WARN_ONCE(1, "clear_halt for a busy endpoint\n"); - } else if (qh->qh_state == QH_STATE_LINKED) { + } else if (qh->qh_state == QH_STATE_LINKED || + qh->qh_state == QH_STATE_COMPLETING) { /* The toggle value in the QH can't be updated * while the QH is active. Unlink it now; |