netdev - [PATCH net-next 09/13] net: axienet: Make missing MAC address non-fatal

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Message-Id: <1559326545-28825-10-git-send-email-hancock@sedsystems.ca>
Date:   Fri, 31 May 2019 12:15:41 -0600
From:   Robert Hancock <hancock@...systems.ca>
To:     netdev@...r.kernel.org
Cc:     anirudh@...inx.com, John.Linn@...inx.com,
        Robert Hancock <hancock@...systems.ca>
Subject: [PATCH net-next 09/13] net: axienet: Make missing MAC address non-fatal

Failing initialization on a missing MAC address property is excessive.
We can just fall back to using a random MAC instead, which at least
leaves the interface in a functioning state.

Signed-off-by: Robert Hancock <hancock@...systems.ca>
---
 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 9949e67..947fa5d 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -308,7 +308,7 @@ static void axienet_set_mac_address(struct net_device *ndev,
 {
 	struct axienet_local *lp = netdev_priv(ndev);
 
-	if (address)
+	if (!IS_ERR(address))
 		memcpy(ndev->dev_addr, address, ETH_ALEN);
 	if (!is_valid_ether_addr(ndev->dev_addr))
 		eth_hw_addr_random(ndev);
@@ -1730,8 +1730,7 @@ static int axienet_probe(struct platform_device *pdev)
 	/* Retrieve the MAC address */
 	mac_addr = of_get_mac_address(pdev->dev.of_node);
 	if (IS_ERR(mac_addr)) {
-		dev_err(&pdev->dev, "could not find MAC address\n");
-		goto free_netdev;
+		dev_warn(&pdev->dev, "could not find MAC address property\n");
 	}
 	axienet_set_mac_address(ndev, mac_addr);
 
-- 
1.8.3.1