net: bgmac: Start transmit queue in bgmac_open

commit c3897f2a upstream.

The driver does not start the transmit queue in bgmac_open(). If the
queue was stopped prior to closing then re-opening the interface, we
would never be able to wake-up again.

Fixes: dd4544f0 ("bgmac: driver for GBit MAC core on BCMA bus")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

drivers/net/ethernet/broadcom/bgmac.c

@@ -1200,6 +1200,8 @@ static int bgmac_open(struct net_device *net_dev)
 
 	netif_carrier_on(net_dev);
 
+	netif_start_queue(net_dev);
+
 err_out:
 	return err;
 }