From: Hans de Goede <hdego...@redhat.com>

This can happen with usb-redir live-migration when the packet gets re-queued
after the migration and the original queuing from the migration source side
has already finished.

Signed-off-by: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
 hw/usb/core.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/hw/usb/core.c b/hw/usb/core.c
index fe431d0..b9f1f7a 100644
--- a/hw/usb/core.c
+++ b/hw/usb/core.c
@@ -398,7 +398,7 @@ int usb_handle_packet(USBDevice *dev, USBPacket *p)
              * When pipelining is enabled usb-devices must always return async,
              * otherwise packets can complete out of order!
              */
-            assert(!p->ep->pipeline);
+            assert(!p->ep->pipeline || QTAILQ_EMPTY(&p->ep->queue));
             if (ret != USB_RET_NAK) {
                 p->result = ret;
                 usb_packet_set_state(p, USB_PACKET_COMPLETE);
-- 
1.7.1


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