+++ /dev/null
-From c66f59ee5050447b3da92d36f5385a847990a894 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Micha=C5=82=20Pecio?= <michal.pecio@gmail.com>
-Date: Tue, 7 Jun 2016 12:34:45 +0200
-Subject: USB: OHCI: Don't mark EDs as ED_OPER if scheduling fails
-
-From: MichaĆ Pecio <michal.pecio@gmail.com>
-
-commit c66f59ee5050447b3da92d36f5385a847990a894 upstream.
-
-Since ed_schedule begins with marking the ED as "operational",
-the ED may be left in such state even if scheduling actually
-fails.
-
-This allows future submission attempts to smuggle this ED to the
-hardware behind the scheduler's back and without linking it to
-the ohci->eds_in_use list.
-
-The former causes bandwidth saturation and data loss on isoc
-endpoints, the latter crashes the kernel when attempt is made
-to unlink such ED from this list.
-
-Fix ed_schedule to update ED state only on successful return.
-
-Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
-Acked-by: Alan Stern <stern@rowland.harvard.edu>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-
----
- drivers/usb/host/ohci-q.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
---- a/drivers/usb/host/ohci-q.c
-+++ b/drivers/usb/host/ohci-q.c
-@@ -183,7 +183,6 @@ static int ed_schedule (struct ohci_hcd
- {
- int branch;
-
-- ed->state = ED_OPER;
- ed->ed_prev = NULL;
- ed->ed_next = NULL;
- ed->hwNextED = 0;
-@@ -263,6 +262,8 @@ static int ed_schedule (struct ohci_hcd
- /* the HC may not see the schedule updates yet, but if it does
- * then they'll be properly ordered.
- */
-+
-+ ed->state = ED_OPER;
- return 0;
- }
-