After clearing the status register we also have to update the irq line status. Otherwise a irq which happends to be pending at reset time causes a interrupt storm. And the guest can't stop as the status register doesn't indicate any pending interrupt.
Both NetBSD and FreeBSD hang on shutdown because of that. Cc: qemu-sta...@nongnu.org Reported-by: Andrey Korolyov <and...@xdel.ru> Signed-off-by: Gerd Hoffmann <kra...@redhat.com> --- hw/usb/hcd-ehci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c index d07f228..d2b7fa2 100644 --- a/hw/usb/hcd-ehci.c +++ b/hw/usb/hcd-ehci.c @@ -865,6 +865,7 @@ void ehci_reset(void *opaque) s->usbsts = USBSTS_HALT; s->usbsts_pending = 0; s->usbsts_frindex = 0; + ehci_update_irq(s); s->astate = EST_INACTIVE; s->pstate = EST_INACTIVE; -- 1.8.3.1