r8152: check RTL8152_UNPLUG for rtl8152_close

It is unnecessary to accress the hw register if the device is unplugged.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 6667809..aade7b5 100644 (file)
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -3046,7 +3046,7 @@ static int rtl8152_close(struct net_device *netdev)
        netif_stop_queue(netdev);
 
        res = usb_autopm_get_interface(tp->intf);
-       if (res < 0) {
+       if (res < 0 || test_bit(RTL8152_UNPLUG, &tp->flags)) {
                rtl_drop_queued_tx(tp);
                rtl_stop_rx(tp);
        } else {