[src/trunk]: src/sys/dev/usb Fix race in attachment.

[mlelstv <mlelstv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3fba45494684
branches:  trunk
changeset: 445807:3fba45494684
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Tue Nov 13 10:35:32 2018 +0000

description:
Fix race in attachment.

diffstat:

 sys/dev/usb/if_urtwn.c |  9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diffs (37 lines):

diff -r 5949601cb2c2 -r 3fba45494684 sys/dev/usb/if_urtwn.c
--- a/sys/dev/usb/if_urtwn.c    Tue Nov 13 10:33:03 2018 +0000
+++ b/sys/dev/usb/if_urtwn.c    Tue Nov 13 10:35:32 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_urtwn.c,v 1.64 2018/09/12 21:57:18 christos Exp $   */
+/*     $NetBSD: if_urtwn.c,v 1.65 2018/11/13 10:35:32 mlelstv Exp $    */
 /*     $OpenBSD: if_urtwn.c,v 1.42 2015/02/10 23:25:46 mpi Exp $       */
 
 /*-
@@ -25,7 +25,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_urtwn.c,v 1.64 2018/09/12 21:57:18 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_urtwn.c,v 1.65 2018/11/13 10:35:32 mlelstv Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -484,7 +484,7 @@
        IFQ_SET_READY(&ifp->if_snd);
        memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ);
 
-       if_attach(ifp);
+       if_initialize(ifp);
        ieee80211_ifattach(ic);
 
        /* override default methods */
@@ -509,6 +509,9 @@
        sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
        sc->sc_txtap.wt_ihdr.it_present = htole32(URTWN_TX_RADIOTAP_PRESENT);
 
+       ifp->if_percpuq = if_percpuq_create(ifp);
+       if_register(ifp);
+
        ieee80211_announce(ic);
 
        usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);