net: spider_net: do not read mac address again after setting it

This patch removes the spider_net_get_mac_address() call at the end of
the spider_net_set_mac() function. The dev->dev_addr is instead updated
with a memcpy() from sa->sa_data.

Since spider_net_get_mac_address() is not used anywhere else, this patch
also removes the function.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/toshiba/spider_net.c

@@ -266,34 +266,6 @@ spider_net_set_promisc(struct spider_net_card *card)
 	}
 }
 
-/**
- * spider_net_get_mac_address - read mac address from spider card
- * @card: device structure
- *
- * reads MAC address from GMACUNIMACU and GMACUNIMACL registers
- */
-static int
-spider_net_get_mac_address(struct net_device *netdev)
-{
-	struct spider_net_card *card = netdev_priv(netdev);
-	u32 macl, macu;
-
-	macl = spider_net_read_reg(card, SPIDER_NET_GMACUNIMACL);
-	macu = spider_net_read_reg(card, SPIDER_NET_GMACUNIMACU);
-
-	netdev->dev_addr[0] = (macu >> 24) & 0xff;
-	netdev->dev_addr[1] = (macu >> 16) & 0xff;
-	netdev->dev_addr[2] = (macu >> 8) & 0xff;
-	netdev->dev_addr[3] = macu & 0xff;
-	netdev->dev_addr[4] = (macl >> 8) & 0xff;
-	netdev->dev_addr[5] = macl & 0xff;
-
-	if (!is_valid_ether_addr(&netdev->dev_addr[0]))
-		return -EINVAL;
-
-	return 0;
-}
-
 /**
  * spider_net_get_descr_status -- returns the status of a descriptor
  * @descr: descriptor to look at
@@ -1345,6 +1317,8 @@ spider_net_set_mac(struct net_device *netdev, void *p)
 	if (!is_valid_ether_addr(addr->sa_data))
 		return -EADDRNOTAVAIL;
 
+	memcpy(netdev->dev_addr, addr->sa_data, ETH_ALEN);
+
 	/* switch off GMACTPE and GMACRPE */
 	regvalue = spider_net_read_reg(card, SPIDER_NET_GMACOPEMD);
 	regvalue &= ~((1 << 5) | (1 << 6));
@@ -1364,12 +1338,6 @@ spider_net_set_mac(struct net_device *netdev, void *p)
 
 	spider_net_set_promisc(card);
 
-	/* look up, whether we have been successful */
-	if (spider_net_get_mac_address(netdev))
-		return -EADDRNOTAVAIL;
-	if (memcmp(netdev->dev_addr,addr->sa_data,netdev->addr_len))
-		return -EADDRNOTAVAIL;
-
 	return 0;
 }