CHROMIUM: gobi: Fix races in qc_deregister() once and for all.

drivers/net/usb/gobi/structs.h

 /* structs.h - shared structures
  * Copyright (c) 2010, Code Aurora Forum. All rights reserved.
 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
  * only version 2 as published by the Free Software Foundation.
 
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
 
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  * 02110-1301, USA.
  */
 
 #ifndef QCUSBNET_STRUCTS_H
 #define QCUSBNET_STRUCTS_H
 
 #include <linux/etherdevice.h>
 #include <linux/ethtool.h>
 #include <linux/mii.h>
 #include <linux/usb.h>
 #include <linux/version.h>
 #include <linux/cdev.h>
+#include <linux/kobject.h>
 #include <linux/kthread.h>
 
 #include <linux/usb/usbnet.h>
 
 #include <linux/fdtable.h>
 
 #define DBG(fmt, arg...)                                                \
 do {                                                                    \
         if (qcusbnet_debug == 1)                                        \
                 printk(KERN_INFO "QCUSBNet2k::%s " fmt, __func__, ##arg); \
@@ skipping 33 matching lines @@
 };
 
 enum {
         DOWN_NO_NDIS_CONNECTION = 0,
         DOWN_CDC_CONNECTION_SPEED = 1,
         DOWN_DRIVER_SUSPENDED = 2,
         DOWN_NET_IFACE_STOPPED = 3,
 };
 
 struct qcusbnet {
+        struct list_head node;
+        struct kref refcount;
         struct usbnet *usbnet;
         struct usb_interface *iface;
         int (*open)(struct net_device *);
         int (*stop)(struct net_device *);
         unsigned long down;
         bool valid;
+        bool dying;
         struct qmidev qmi;
         char meid[14];
         struct worker worker;
 };
 
 #endif /* !QCUSBNET_STRUCTS_H */