r8152: fix rtl8152_post_reset function

BugLink: http://bugs.launchpad.net/bugs/1698817

[ Upstream commit 2c561b2b ]

The rtl8152_post_reset() should sumbit rx urb and interrupt transfer,
otherwise the rx wouldn't work and the linking change couldn't be
detected.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

drivers/net/usb/r8152.c

@@ -3491,12 +3491,14 @@ static int rtl8152_post_reset(struct usb_interface *intf)
 	if (netif_carrier_ok(netdev)) {
 		mutex_lock(&tp->control);
 		tp->rtl_ops.enable(tp);
+		rtl_start_rx(tp);
 		rtl8152_set_rx_mode(netdev);
 		mutex_unlock(&tp->control);
 		netif_wake_queue(netdev);
 	}
 
 	napi_enable(&tp->napi);
+	usb_submit_urb(tp->intr_urb, GFP_KERNEL);
 
 	return 0;
 }