From: Jakub Kicinski <kuba@kernel.org>
Date: Thu, 21 Oct 2021 06:12:12 -0700
Subject: net: plip: use eth_hw_addr_set()
Patch-mainline: v5.16-rc1
Git-commit: 7996acffd7cc83504eb300e791c80ac9c7f7e893
References: jsc#PED-1565

Get it ready for constant netdev->dev_addr.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/plip/plip.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/net/plip/plip.c
+++ b/drivers/net/plip/plip.c
@@ -282,12 +282,16 @@ static const struct net_device_ops plip_
 static void
 plip_init_netdev(struct net_device *dev)
 {
+	static const u8 addr_init[ETH_ALEN] = {
+		0xfc, 0xfc, 0xfc,
+		0xfc, 0xfc, 0xfc,
+	};
 	struct net_local *nl = netdev_priv(dev);
 
 	/* Then, override parts of it */
 	dev->tx_queue_len 	 = 10;
 	dev->flags	         = IFF_POINTOPOINT|IFF_NOARP;
-	memset(dev->dev_addr, 0xfc, ETH_ALEN);
+	eth_hw_addr_set(dev, addr_init);
 
 	dev->netdev_ops		 = &plip_netdev_ops;
 	dev->header_ops          = &plip_header_ops;
@@ -1107,7 +1111,7 @@ plip_open(struct net_device *dev)
 		   plip_init_dev(). */
 		const struct in_ifaddr *ifa = rcu_dereference(in_dev->ifa_list);
 		if (ifa != NULL) {
-			memcpy(dev->dev_addr+2, &ifa->ifa_local, 4);
+			dev_addr_mod(dev, 2, &ifa->ifa_local, 4);
 		}
 	}