diff options
| -rw-r--r-- | drivers/usb/host/ohci-q.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c index 177a213790d4..7482cfbe8c5e 100644 --- a/drivers/usb/host/ohci-q.c +++ b/drivers/usb/host/ohci-q.c @@ -1128,6 +1128,25 @@ dl_done_list (struct ohci_hcd *ohci) while (td) { struct td *td_next = td->next_dl_td; + struct ed *ed = td->ed; + + /* + * Some OHCI controllers (NVIDIA for sure, maybe others) + * occasionally forget to add TDs to the done queue. Since + * TDs for a given endpoint are always processed in order, + * if we find a TD on the donelist then all of its + * predecessors must be finished as well. + */ + for (;;) { + struct td *td2; + + td2 = list_first_entry(&ed->td_list, struct td, + td_list); + if (td2 == td) + break; + takeback_td(ohci, td2); + } + takeback_td(ohci, td); td = td_next; } |