We didn't start any work yet so we can just return
at that point instead of asserting.

Buglink: https://bugs.launchpad.net/qemu/+bug/1883732
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
 hw/usb/hcd-xhci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 79ce5c4be6c4..d00bb0141dac 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -1904,7 +1904,9 @@ static void xhci_kick_epctx(XHCIEPContext *epctx, 
unsigned int streamid)
         streamid = 0;
         xhci_set_ep_state(xhci, epctx, NULL, EP_RUNNING);
     }
-    assert(ring->dequeue != 0);
+    if (!ring->dequeue) {
+        return;
+    }
 
     epctx->kick_active++;
     while (1) {
-- 
2.27.0


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