>From 822934d5118c18707a6781e006c35482186f2b12 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <address@hidden>
Date: Tue, 13 Nov 2012 17:20:05 +0100
Subject: [PATCH] ehci: keep the frame timer running in case the guest asked for frame list rollover interrupts

Signed-off-by: Gerd Hoffmann <address@hidden>
---
 hw/usb/hcd-ehci.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index ee6c9ae..20766d8 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -2209,6 +2209,10 @@ static void ehci_frame_timer(void *opaque)
         ehci->async_stepdown = 0;
     }
 
+    if (ehci->usbintr & USBSTS_FLR) {
+        need_timer++;
+    }
+
     if (need_timer) {
         /* If we've raised int, we speed up the timer, so that we quickly
          * notice any new packets queued up in response */
-- 
1.7.1