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From: Weongyo Jeong <weongyo@FreeBSD.org>
Date: Thu, 9 Sep 2010 00:34:55 +0000 (UTC)
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Subject: svn commit: r212344 - user/weongyo/usb/sys/dev/usb/net
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Author: weongyo
Date: Thu Sep  9 00:34:55 2010
New Revision: 212344
URL: http://svn.freebsd.org/changeset/base/212344

Log:
  Detaching the miibus child should be happen after draining all parent
  tasks because it could access miibus API (e.g. calling mii_tick()).

Modified:
  user/weongyo/usb/sys/dev/usb/net/if_axe.c

Modified: user/weongyo/usb/sys/dev/usb/net/if_axe.c
==============================================================================
--- user/weongyo/usb/sys/dev/usb/net/if_axe.c	Thu Sep  9 00:31:23 2010	(r212343)
+++ user/weongyo/usb/sys/dev/usb/net/if_axe.c	Thu Sep  9 00:34:55 2010	(r212344)
@@ -847,13 +847,12 @@ axe_detach(device_t dev)
 	struct axe_softc *sc = device_get_softc(dev);
 	struct ifnet *ifp = sc->sc_ifp;
 
-	if (sc->sc_miibus != NULL)
-		device_delete_child(sc->sc_dev, sc->sc_miibus);
-
 	sleepout_drain(&sc->sc_watchdog);
 	taskqueue_drain(sc->sc_sleepout.s_taskqueue, &sc->sc_setmulti);
 	usbd_transfer_unsetup(sc->sc_xfer, AXE_N_TRANSFER);
 
+	if (sc->sc_miibus != NULL)
+		device_delete_child(sc->sc_dev, sc->sc_miibus);
 	if (ifp != NULL) {
 		AXE_LOCK(sc);
 		ifp->if_drv_flags &= ~IFF_DRV_RUNNING;