Executing cmd 'rmmod rtl8150' does not return(if your device connects
to host), the root cause is tasklet_disable() causes tasklet_kill()
block, remove it from rtl8150_disconnect().
Signed-off-by: Huajun Li <huajun.li.lee@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
        usb_set_intfdata(intf, NULL);
        if (dev) {
                set_bit(RTL8150_UNPLUG, &dev->flags);
-               tasklet_disable(&dev->tl);
                tasklet_kill(&dev->tl);
                unregister_netdev(dev->netdev);
                unlink_all_urbs(dev);