This can happen today in case the ->complete() callback queues up the
next packet. Also we'll support pipelining soon, which allows to have
multiple packets per queue in flight (aka ASYNC) state.
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
hw/usb.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/hw/usb.c b/hw/usb.c
index 57fc5e3..fc41d62 100644
--- a/hw/usb.c
+++ b/hw/usb.c
@@ -356,6 +356,9 @@ void usb_packet_complete(USBDevice *dev, USBPacket *p)
while (!QTAILQ_EMPTY(&ep->queue)) {
p = QTAILQ_FIRST(&ep->queue);
+ if (p->state == USB_PACKET_ASYNC) {
+ break;
+ }
assert(p->state == USB_PACKET_QUEUED);
ret = usb_process_one(p);
if (ret == USB_RET_ASYNC) {
--
1.7.1
