From 15e1636b0c32a0b4c0b85bc8b52ada681eb36a00 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Thu, 1 Mar 2012 16:34:56 +0100
Subject: [PATCH] usb-ehci: Any packet completion except for NAK should set the
 interrupt

As clearly stated in the 2.3.2 of the EHCI spec, any time USBERRINT get
sets then if the td has its IOC bit set USBINT should be set as well.

This means that for any status except for USB_RET_NAK we should set
USBINT if the IOC bit is set.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 hw/usb-ehci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c
index 11eded7..bc5f591 100644
--- a/hw/usb-ehci.c
+++ b/hw/usb-ehci.c
@@ -1338,7 +1338,7 @@ err:
     q->qh.token ^= QTD_TOKEN_DTOGGLE;
     q->qh.token &= ~QTD_TOKEN_ACTIVE;
 
-    if ((q->usb_status >= 0) && (q->qh.token & QTD_TOKEN_IOC)) {
+    if ((q->usb_status != USB_RET_NAK) && (q->qh.token & QTD_TOKEN_IOC)) {
         ehci_record_interrupt(q->ehci, USBSTS_INT);
     }
 }