usbnet:cdc-phonet: 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>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/net/usb/cdc-phonet.c b/drivers/net/usb/cdc-phonet.c
index d848d4dd5754..187c144c5e5b 100644
--- a/drivers/net/usb/cdc-phonet.c
+++ b/drivers/net/usb/cdc-phonet.c
@@ -394,7 +394,7 @@ int usbpn_probe(struct usb_interface *intf, const struct usb_device_id *id)
         SET_NETDEV_DEV(dev, &intf->dev);
 
         pnd->dev = dev;
-        pnd->usb = usb_get_dev(usbdev);
+        pnd->usb = usbdev;
         pnd->intf = intf;
         pnd->data_intf = data_intf;
         spin_lock_init(&pnd->tx_lock);
@@ -440,7 +440,6 @@ out:
 static void usbpn_disconnect(struct usb_interface *intf)
 {
         struct usbpn_dev *pnd = usb_get_intfdata(intf);
-        struct usb_device *usb = pnd->usb;
 
         if (pnd->disconnected)
                 return;
@@ -449,7 +448,6 @@ static void usbpn_disconnect(struct usb_interface *intf)
         usb_driver_release_interface(&usbpn_driver,
                         (pnd->intf == intf) ? pnd->data_intf : pnd->intf);
         unregister_netdev(pnd->dev);
-        usb_put_dev(usb);
 }
 
 static struct usb_driver usbpn_driver = {