netdev - [PATCH net-next 02/12] ethernet: sky2/skge: use eth_hw_addr

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Date:   Mon, 18 Oct 2021 07:29:22 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        mlindner@...vell.com, stephen@...workplumber.org
Subject: [PATCH net-next 02/12] ethernet: sky2/skge: 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, then call
eth_hw_addr_set().

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
CC: mlindner@...vell.com
CC: stephen@...workplumber.org
---
 drivers/net/ethernet/marvell/skge.c | 4 +++-
 drivers/net/ethernet/marvell/sky2.c | 9 ++++++---
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/marvell/skge.c b/drivers/net/ethernet/marvell/skge.c
index ac48dcca268c..0c864e5bf0a6 100644
--- a/drivers/net/ethernet/marvell/skge.c
+++ b/drivers/net/ethernet/marvell/skge.c
@@ -3810,6 +3810,7 @@ static struct net_device *skge_devinit(struct skge_hw *hw, int port,
 {
 	struct skge_port *skge;
 	struct net_device *dev = alloc_etherdev(sizeof(*skge));
+	u8 addr[ETH_ALEN];
 
 	if (!dev)
 		return NULL;
@@ -3862,7 +3863,8 @@ static struct net_device *skge_devinit(struct skge_hw *hw, int port,
 	}
 
 	/* read the mac address */
-	memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port*8, ETH_ALEN);
+	memcpy_fromio(addr, hw->regs + B2_MAC_1 + port*8, ETH_ALEN);
+	eth_hw_addr_set(dev, addr);
 
 	return dev;
 }
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 0da18b3f1c01..5abb55191e8e 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -4721,9 +4721,12 @@ static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port,
 	 * 2) from internal registers set by bootloader
 	 */
 	ret = of_get_ethdev_address(hw->pdev->dev.of_node, dev);
-	if (ret)
-		memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
-			      ETH_ALEN);
+	if (ret) {
+		u8 addr[ETH_ALEN];
+
+		memcpy_fromio(addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
+		eth_hw_addr_set(dev, addr);
+	}
 
 	/* if the address is invalid, use a random value */
 	if (!is_valid_ether_addr(dev->dev_addr)) {
-- 
2.31.1