netdev - [PATCH net-next 4/6] ethernet: tlan: use eth_hw_addr

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Message-Id: <20211019150011.1355755-5-kuba@kernel.org>
Date:   Tue, 19 Oct 2021 08:00:09 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        chessman@....org
Subject: [PATCH net-next 4/6] ethernet: tlan: use eth_hw_addr_set()

Commit 406f42fa0d3c ("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.

Read the address into an array on the stack, do the swapping, then
call eth_hw_addr_set().

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
CC: chessman@....org
---
 drivers/net/ethernet/ti/tlan.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c
index eab7d78d7c72..741c42c6a417 100644
--- a/drivers/net/ethernet/ti/tlan.c
+++ b/drivers/net/ethernet/ti/tlan.c
@@ -817,6 +817,7 @@ static int tlan_init(struct net_device *dev)
 	int		err;
 	int		i;
 	struct tlan_priv	*priv;
+	u8 addr[ETH_ALEN];
 
 	priv = netdev_priv(dev);
 
@@ -842,7 +843,7 @@ static int tlan_init(struct net_device *dev)
 	for (i = 0; i < ETH_ALEN; i++)
 		err |= tlan_ee_read_byte(dev,
 					 (u8) priv->adapter->addr_ofs + i,
-					 (u8 *) &dev->dev_addr[i]);
+					 addr + i);
 	if (err) {
 		pr_err("%s: Error reading MAC from eeprom: %d\n",
 		       dev->name, err);
@@ -850,11 +851,12 @@ static int tlan_init(struct net_device *dev)
 	/* Olicom OC-2325/OC-2326 have the address byte-swapped */
 	if (priv->adapter->addr_ofs == 0xf8) {
 		for (i = 0; i < ETH_ALEN; i += 2) {
-			char tmp = dev->dev_addr[i];
-			dev->dev_addr[i] = dev->dev_addr[i + 1];
-			dev->dev_addr[i + 1] = tmp;
+			char tmp = addr[i];
+			addr[i] = addr[i + 1];
+			addr[i + 1] = tmp;
 		}
 	}
+	eth_hw_addr_set(dev, addr);
 
 	netif_carrier_off(dev);
 
-- 
2.31.1