gianfar: ethernet vanishes after restoring from hibernation

If a gianfar ethernet device is down prior to hibernating a
system, it will no longer be present upon system restore.

For example:

	~# ifconfig eth0 down
	~# echo disk > /sys/power/state

	  <trigger a restore from hibernation>

	~# ifconfig eth0 up
	SIOCSIFFLAGS: No such device

This happens because the restore function bails out early upon
finding devices that were not up at hibernation.  In doing so,
it never gets to the netif_device_attach call at the end of
the restore function.  Adding the netif_device_attach as done
here also makes the gfar_restore code consistent with what is
done in the gfar_resume code.

Cc: Claudiu Manoil <>
Signed-off-by: Wang Dongsheng <>
Signed-off-by: Paul Gortmaker <>
Acked-by: Claudiu Manoil <>
Signed-off-by: David S. Miller <>
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 1d03dcd..19ac096 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -1353,8 +1353,11 @@
 	struct gfar_private *priv = dev_get_drvdata(dev);
 	struct net_device *ndev = priv->ndev;
-	if (!netif_running(ndev))
+	if (!netif_running(ndev)) {
+		netif_device_attach(ndev);
 		return 0;
+	}