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uhci: When the guest marks a pending td non-active, cancel the queue

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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede 2012-10-24 18:31:17 +02:00 • committed by Gerd Hoffmann
parent 8c75a899f8
commit 420ca987d5
1 changed files with 4 additions and 0 deletions
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4
hw/usb/hcd-uhci.c
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@ -821,6 +821,10 @@ static int uhci_handle_td(UHCIState *s, UHCIQueue *q, uint32_t qh_addr,
/* Is active ? */ /* Is active ? */
if (!(td->ctrl & TD_CTRL_ACTIVE)) { if (!(td->ctrl & TD_CTRL_ACTIVE)) {
if (async) {
/* Guest marked a pending td non-active, cancel the queue */
uhci_queue_free(async->queue, "pending td non-active");
}
/* /*
* ehci11d spec page 22: "Even if the Active bit in the TD is already * ehci11d spec page 22: "Even if the Active bit in the TD is already
* cleared when the TD is fetched ... an IOC interrupt is generated" * cleared when the TD is fetched ... an IOC interrupt is generated"