[src/trunk]: src/sys/dev/usb now that the task threads are created earlier, m...

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

details:   https://anonhg.NetBSD.org/src/rev/8cd3ca69a219
branches:  trunk
changeset: 780354:8cd3ca69a219
user:      mrg <mrg%NetBSD.org@localhost>
date:      Fri Jul 20 23:18:02 2012 +0000

description:
now that the task threads are created earlier, move the call to
usb_create_event_thread() back into usb_doattach(), so that eg,
usb_discover() never operates when the root_hub is not setup.

fixes a crash joerg@ reported.

diffstat:

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

diffs (34 lines):

diff -r a8876a5940da -r 8cd3ca69a219 sys/dev/usb/usb.c
--- a/sys/dev/usb/usb.c Fri Jul 20 21:53:57 2012 +0000
+++ b/sys/dev/usb/usb.c Fri Jul 20 23:18:02 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: usb.c,v 1.134 2012/07/20 07:31:14 mrg Exp $    */
+/*     $NetBSD: usb.c,v 1.135 2012/07/20 23:18:02 mrg Exp $    */
 
 /*
  * Copyright (c) 1998, 2002, 2008, 2012 The NetBSD Foundation, Inc.
@@ -37,7 +37,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.134 2012/07/20 07:31:14 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.135 2012/07/20 23:18:02 mrg Exp $");
 
 #include "opt_compat_netbsd.h"
 #include "opt_usb.h"
@@ -205,7 +205,6 @@
                sc->sc_bus->methods->get_lock(sc->sc_bus, &sc->sc_bus->lock);
        else
                sc->sc_bus->lock = NULL;
-       usb_create_event_thread(self);
 
        RUN_ONCE(&init_control, usb_once_init);
        config_interrupts(self, usb_doattach);
@@ -297,6 +296,7 @@
                        return;
                }
                sc->sc_bus->root_hub = dev;
+               usb_create_event_thread(self);
 #if 1
                /*
                 * Turning this code off will delay attachment of USB devices