Implement polling.

diff --git a/sys/dev/usb/xhci.c b/sys/dev/usb/xhci.c
index 38e34b0..7a3afac 100644 (file)
--- a/sys/dev/usb/xhci.c
+++ b/sys/dev/usb/xhci.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: xhci.c,v 1.17 2014/08/08 14:17:52 mpi Exp $ */
+/* $OpenBSD: xhci.c,v 1.18 2014/08/08 14:22:45 mpi Exp $ */
 
 /*
  * Copyright (c) 2014 Martin Pieuchot
@@ -575,7 +575,21 @@ xhci_poll(struct usbd_bus *bus)
 void
 xhci_waitintr(struct xhci_softc *sc, struct usbd_xfer *xfer)
 {
-       DPRINTF(("%s: stub\n", __func__));
+       int timo;
+
+       for (timo = xfer->timeout; timo >= 0; timo--) {
+               usb_delay_ms(&sc->sc_bus, 1);
+               if (sc->sc_bus.dying)
+                       break;
+
+               if (xfer->status != USBD_IN_PROGRESS)
+                       return;
+
+               xhci_intr1(sc);
+       }
+
+       xfer->status = USBD_TIMEOUT;
+       usb_transfer_complete(xfer);
 }
 
 void