From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 13 Nov 2012 16:20:05 +0000 (+0100)
Subject: ehci: keep the frame timer running in case the guest asked for frame list rollover... 
X-Git-Tag: v1.3.0-rc0~7^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=40862309a9d733cb0e878c79f477de003897b5d2;p=thirdparty%2Fqemu.git

ehci: keep the frame timer running in case the guest asked for frame list rollover interrupts

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---

diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index 287a066d0a4..14269dafed2 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -964,6 +964,9 @@ static void ehci_opreg_write(void *ptr, hwaddr addr,
 
     case USBINTR:
         val &= USBINTR_MASK;
+        if (ehci_enabled(s) && (USBSTS_FLR & val)) {
+            qemu_bh_schedule(s->async_bh);
+        }
         break;
 
     case FRINDEX:
@@ -2220,6 +2223,10 @@ static void ehci_frame_timer(void *opaque)
         ehci->async_stepdown = 0;
     }
 
+    if (ehci_enabled(ehci) && (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 */