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ehci: Assert state machine is sane w.r.t. EHCIQueue 

Coverity worries the EHCIQueue pointer could be null when we pass it
to functions that reference it.  The state machine ensures it can't be
null then.  Assert that, to hush the checker.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Markus Armbruster 2013-01-10 14:33:23 +01:00 committed by Gerd Hoffmann
parent 0cb41e2c5e
commit cc8d2b65c7
1 changed files with 4 additions and 0 deletions
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hw/usb/hcd-ehci.c
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@ -2092,18 +2092,22 @@ static void ehci_advance_state(EHCIState *ehci, int async)
break;
case EST_ADVANCEQUEUE:
assert(q != NULL);
again = ehci_state_advqueue(q);
break;
case EST_FETCHQTD:
assert(q != NULL);
again = ehci_state_fetchqtd(q);
break;
case EST_HORIZONTALQH:
assert(q != NULL);
again = ehci_state_horizqh(q);
break;
case EST_EXECUTE:
assert(q != NULL);
again = ehci_state_execute(q);
if (async) {
ehci->async_stepdown = 0;