net: fjes: constify and use eth_hw_addr_set()

Get it ready for constant netdev->dev_addr.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

drivers/net/fjes/fjes_hw.c

@@ -137,7 +137,8 @@ static void fjes_hw_free_epbuf(struct epbuf_handler *epbh)
 	epbh->ring = NULL;
 }
 
-void fjes_hw_setup_epbuf(struct epbuf_handler *epbh, u8 *mac_addr, u32 mtu)
+void fjes_hw_setup_epbuf(struct epbuf_handler *epbh, const u8 *mac_addr,
+			 u32 mtu)
 {
 	union ep_buffer_info *info = epbh->info;
 	u16 vlan_id[EP_BUFFER_SUPPORT_VLAN_MAX];

drivers/net/fjes/fjes_hw.h

@@ -330,7 +330,7 @@ int fjes_hw_register_buff_addr(struct fjes_hw *, int,
 int fjes_hw_unregister_buff_addr(struct fjes_hw *, int);
 void fjes_hw_init_command_registers(struct fjes_hw *,
 				    struct fjes_device_command_param *);
-void fjes_hw_setup_epbuf(struct epbuf_handler *, u8 *, u32);
+void fjes_hw_setup_epbuf(struct epbuf_handler *, const u8 *, u32);
 int fjes_hw_raise_interrupt(struct fjes_hw *, int, enum REG_ICTL_MASK);
 void fjes_hw_set_irqmask(struct fjes_hw *, enum REG_ICTL_MASK, bool);
 u32 fjes_hw_capture_interrupt_status(struct fjes_hw *);

drivers/net/fjes/fjes_main.c

@@ -1203,6 +1203,7 @@ static int fjes_probe(struct platform_device *plat_dev)
 	struct net_device *netdev;
 	struct resource *res;
 	struct fjes_hw *hw;
+	u8 addr[ETH_ALEN];
 	int err;
 
 	err = -ENOMEM;
@@ -1266,12 +1267,13 @@ static int fjes_probe(struct platform_device *plat_dev)
 		goto err_free_control_wq;
 
 	/* setup MAC address (02:00:00:00:00:[epid])*/
-	netdev->dev_addr[0] = 2;
-	netdev->dev_addr[1] = 0;
-	netdev->dev_addr[2] = 0;
-	netdev->dev_addr[3] = 0;
-	netdev->dev_addr[4] = 0;
-	netdev->dev_addr[5] = hw->my_epid; /* EPID */
+	addr[0] = 2;
+	addr[1] = 0;
+	addr[2] = 0;
+	addr[3] = 0;
+	addr[4] = 0;
+	addr[5] = hw->my_epid; /* EPID */
+	eth_hw_addr_set(netdev, addr);
 
 	err = register_netdev(netdev);
 	if (err)