From: Jakub Kicinski <kuba@kernel.org>
Date: Fri, 15 Oct 2021 15:16:45 -0700
Subject: ethernet: aquantia: use eth_hw_addr_set()
Patch-mainline: v5.16-rc1
Git-commit: 698c33d8b48999bdec6671d664dbd926bb27e474
References: jsc#PED-1565

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.

Use an array on the stack, then call eth_hw_addr_set().
eth_hw_addr_set() is after error checking, this should
be fine, error propagates all the way to failing probe.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/aquantia/atlantic/aq_nic.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
@@ -300,6 +300,7 @@ static bool aq_nic_is_valid_ether_addr(c
 
 int aq_nic_ndev_register(struct aq_nic_s *self)
 {
+	u8 addr[ETH_ALEN];
 	int err = 0;
 
 	if (!self->ndev) {
@@ -316,12 +317,13 @@ int aq_nic_ndev_register(struct aq_nic_s
 #endif
 
 	mutex_lock(&self->fwreq_mutex);
-	err = self->aq_fw_ops->get_mac_permanent(self->aq_hw,
-			    self->ndev->dev_addr);
+	err = self->aq_fw_ops->get_mac_permanent(self->aq_hw, addr);
 	mutex_unlock(&self->fwreq_mutex);
 	if (err)
 		goto err_exit;
 
+	eth_hw_addr_set(self->ndev, addr);
+
 	if (!is_valid_ether_addr(self->ndev->dev_addr) ||
 	    !aq_nic_is_valid_ether_addr(self->ndev->dev_addr)) {
 		netdev_warn(self->ndev, "MAC is invalid, will use random.");