ethernet: enetc: use eth_hw_addr_set()

Commit 406f42fa ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

Pass a netdev into the helper instead of just the address,
read the address into an array on the stack, then call
eth_hw_addr_set().
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/enetc/enetc_hw.h

@@ -635,10 +635,14 @@ struct enetc_cmd_rfse {
 #define ENETC_RFSE_EN	BIT(15)
 #define ENETC_RFSE_MODE_BD	2
 
-static inline void enetc_get_primary_mac_addr(struct enetc_hw *hw, u8 *addr)
+static inline void enetc_load_primary_mac_addr(struct enetc_hw *hw,
+					       struct net_device *ndev)
 {
+	u8 addr[ETH_ALEN] __aligned(4);
+
 	*(u32 *)addr = __raw_readl(hw->reg + ENETC_SIPMAR0);
 	*(u16 *)(addr + 4) = __raw_readw(hw->reg + ENETC_SIPMAR1);
+	eth_hw_addr_set(ndev, addr);
 }
 
 #define ENETC_SI_INT_IDX	0

drivers/net/ethernet/freescale/enetc/enetc_pf.c

@@ -783,7 +783,7 @@ static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
 	}
 
 	/* pick up primary MAC address from SI */
-	enetc_get_primary_mac_addr(&si->hw, ndev->dev_addr);
+	enetc_load_primary_mac_addr(&si->hw, ndev);
 }
 
 static int enetc_mdio_probe(struct enetc_pf *pf, struct device_node *np)

drivers/net/ethernet/freescale/enetc/enetc_vf.c

@@ -135,7 +135,7 @@ static void enetc_vf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
 		ndev->hw_features |= NETIF_F_RXHASH;
 
 	/* pick up primary MAC address from SI */
-	enetc_get_primary_mac_addr(&si->hw, ndev->dev_addr);
+	enetc_load_primary_mac_addr(&si->hw, ndev);
 }
 
 static int enetc_vf_probe(struct pci_dev *pdev,