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;
         }