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USB: EHCI: don't refcount QHs

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This patch (as1567) removes ehci-hcd's reference counting of QH
structures.  It's not necessary to refcount these things because they
always get deallocated at exactly one spot in ehci_endpoint_disable()
(except for two special QHs, ehci->async and ehci->dummy) and are
never used again.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern 2012-07-11 11:21:25 -04:00 • committed by Greg Kroah-Hartman
parent 15be105b4a
commit c83e1a9ff6
5 changed files with 8 additions and 44 deletions
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2
drivers/usb/host/ehci-hcd.c
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@ -1179,7 +1179,7 @@ idle_timeout:
if (qh->clearing_tt)
goto idle_timeout;
if (list_empty (&qh->qtd_list)) {
qh_put (qh);
qh_destroy(ehci, qh);
break;
}
/* else FALL THROUGH */