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jmcneill@invisible.ca said:
> we really need to look at this USB issue

For me, the appended patch helps. Don't know what this
"dying" stuff is good for. In our situation it is
clearly wrong.

best regards
Matthias





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Forschungszentrum Juelich GmbH
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Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzende des Aufsichtsrats: MinDirig'in Baerbel Brumme-Bothe
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Dr. Ulrich Krafft (stellv. Vorsitzender), Dr. Sebastian M. Schmidt
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Content-Type: text/plain ; name="uhci.txt"; charset=us-ascii
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Content-Disposition: attachment; filename="uhci.txt"

#
# old_revision [0a771c46bfc69659df8e7e5ad7974204d8db8c5e]
#
# patch "sys/dev/usb/uhci.c"
#  from [38ae96c726e1a49959f585b2acae84bb049a27d5]
#    to [c942d5d432bbc177f736ac52d3938dcd2e13ed36]
#
============================================================
--- sys/dev/usb/uhci.c	38ae96c726e1a49959f585b2acae84bb049a27d5
+++ sys/dev/usb/uhci.c	c942d5d432bbc177f736ac52d3938dcd2e13ed36
@@ -1249,7 +1249,7 @@ uhci_intr1(uhci_softc_t *sc)
 		       USBDEVNAME(sc->sc_bus.bdev));
 	}
 	if (status & UHCI_STS_HCH) {
-		/* no acknowledge needed */
+		ack |= UHCI_STS_HCH;
 		if (!sc->sc_dying) {
 			printf("%s: host controller halted\n",
 			    USBDEVNAME(sc->sc_bus.bdev));
@@ -1257,7 +1257,6 @@ uhci_intr1(uhci_softc_t *sc)
 			uhci_dump_all(sc);
 #endif
 		}
-		sc->sc_dying = 1;
 	}
 
 	if (!ack)

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