From 269b7c5ff78264e3728b95828d219e0e0eeaec94 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 19 Jul 2019 01:22:06 +0000 Subject: [PATCH] ag71xx: fix return value check in ag71xx_probe() In case of error, the function of_get_mac_address() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Fixes: d51b6ce441d3 ("net: ethernet: add ag71xx driver") Signed-off-by: Wei Yongjun Reviewed-by: Oleksij Rempel Signed-off-by: David S. Miller --- drivers/net/ethernet/atheros/ag71xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/atheros/ag71xx.c b/drivers/net/ethernet/atheros/ag71xx.c index 31d27808ddee..8b69d0d7e726 100644 --- a/drivers/net/ethernet/atheros/ag71xx.c +++ b/drivers/net/ethernet/atheros/ag71xx.c @@ -1735,9 +1735,9 @@ static int ag71xx_probe(struct platform_device *pdev) ag->stop_desc->next = (u32)ag->stop_desc_dma; mac_addr = of_get_mac_address(np); - if (mac_addr) + if (!IS_ERR(mac_addr)) memcpy(ndev->dev_addr, mac_addr, ETH_ALEN); - if (!mac_addr || !is_valid_ether_addr(ndev->dev_addr)) { + if (IS_ERR(mac_addr) || !is_valid_ether_addr(ndev->dev_addr)) { netif_err(ag, probe, ndev, "invalid MAC address, using random address\n"); eth_random_addr(ndev->dev_addr); } -- 2.20.1