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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>
(cherry picked from commit cf1f81691d)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Hans de Goede 2012-09-03 12:17:48 +02:00 committed by Michael Roth
parent e2ab86fe2d
commit 77c3d59256
1 changed files with 4 additions and 1 deletions
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5
hw/usb/hcd-ehci.c
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@ -2045,7 +2045,10 @@ static int ehci_state_fetchqtd(EHCIQueue *q)
ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH); ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
break; break;
case EHCI_ASYNC_FINISHED: 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); ehci_set_state(q->ehci, q->async, EST_EXECUTING);
break; break;
} }