netdev - [PATCH net-next 1/6] ethernet: netsec: use eth_hw_addr

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Date:   Tue, 19 Oct 2021 08:00:06 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        jaswinder.singh@...aro.org, ilias.apalodimas@...aro.org
Subject: [PATCH net-next 1/6] ethernet: netsec: 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: jaswinder.singh@...aro.org
CC: ilias.apalodimas@...aro.org
---
 drivers/net/ethernet/socionext/netsec.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
index baa9f5d1c549..de7d8bf2c226 100644
--- a/drivers/net/ethernet/socionext/netsec.c
+++ b/drivers/net/ethernet/socionext/netsec.c
@@ -2037,13 +2037,15 @@ static int netsec_probe(struct platform_device *pdev)
 	if (ret && priv->eeprom_base) {
 		void __iomem *macp = priv->eeprom_base +
 					NETSEC_EEPROM_MAC_ADDRESS;
-
-		ndev->dev_addr[0] = readb(macp + 3);
-		ndev->dev_addr[1] = readb(macp + 2);
-		ndev->dev_addr[2] = readb(macp + 1);
-		ndev->dev_addr[3] = readb(macp + 0);
-		ndev->dev_addr[4] = readb(macp + 7);
-		ndev->dev_addr[5] = readb(macp + 6);
+		u8 addr[ETH_ALEN];
+
+		addr[0] = readb(macp + 3);
+		addr[1] = readb(macp + 2);
+		addr[2] = readb(macp + 1);
+		addr[3] = readb(macp + 0);
+		addr[4] = readb(macp + 7);
+		addr[5] = readb(macp + 6);
+		eth_hw_addr_set(ndev, addr);
 	}
 
 	if (!is_valid_ether_addr(ndev->dev_addr)) {
-- 
2.31.1