usbnet: remove usb_get/put_dev in .probe and .disconnect

usb_device is parent device of usb_interface in the view of driver
model, so its reference count is always held during .probe/.disconnect
of usb_interface instance.

This patch just removes the unnecessay usb_get/put_dev.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 9f58330f1312059d37deeb072b2d5c32d3d6df03..022c1e72d00444c9860b37a3919127b738407b0b 100644 (file)
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -1307,7 +1307,6 @@ void usbnet_disconnect (struct usb_interface *intf)
        usb_free_urb(dev->interrupt);
 
        free_netdev(net);
-       usb_put_dev (xdev);
 }
 EXPORT_SYMBOL_GPL(usbnet_disconnect);
 
@@ -1363,8 +1362,6 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
        xdev = interface_to_usbdev (udev);
        interface = udev->cur_altsetting;
 
-       usb_get_dev (xdev);
-
        status = -ENOMEM;
 
        // set up our own records
@@ -1493,7 +1490,6 @@ out3:
 out1:
        free_netdev(net);
 out:
-       usb_put_dev(xdev);
        return status;
 }
 EXPORT_SYMBOL_GPL(usbnet_probe);