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authorHans de Goede <hdegoede@redhat.com>2012-09-03 12:17:48 +0200
committerGerd Hoffmann <kraxel@redhat.com>2012-09-11 07:42:59 +0200
commitcf1f81691d1998fa8fe5bfcb8b498fb3723cf3c3 (patch)
tree285ca3997bea0e0ea53fb676fd8ca7dfa740e5be
parenteff6dce79bd7ad3c16d75c5e55b5a2a137ba6a60 (diff)
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ehci: Correct a comment in fetchqtd packet processing
Since my previous comment said "Should never happen", I tried changing the next line to an assert(0), which did not go well, which as the new comments explains is logical if you think about it for a moment. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
-rw-r--r--hw/usb/hcd-ehci.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index 2534394202..2f3e9c03a1 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -2045,7 +2045,10 @@ static int ehci_state_fetchqtd(EHCIQueue *q)
ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
break;
case EHCI_ASYNC_FINISHED:
- /* Should never happen, as this case is caught by fetchqh */
+ /*
+ * We get here when advqueue moves to a packet which is already
+ * finished, which can happen with packets queued up by fill_queue
+ */
ehci_set_state(q->ehci, q->async, EST_EXECUTING);
break;
}