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ramips: 5.4: handle ERR_PTR properly

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of_get_mac_address can return ERR_PTR since 5.2, so the return pointer should be
checked before used. Otherwise it might cause an oops during boot.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>
This commit is contained in:
Sungbo Eo 2020-04-25 17:35:53 +09:00 committed by Chuanhong Guo
parent 0a05d71f6f
commit f7112a180f
1 changed files with 1 additions and 1 deletions
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2
target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c
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@ -1401,7 +1401,7 @@ static int __init fe_init(struct net_device *dev)
fe_reset_phy(priv);
mac_addr = of_get_mac_address(priv->dev->of_node);
if (mac_addr)
if (!IS_ERR_OR_NULL(mac_addr))
ether_addr_copy(dev->dev_addr, mac_addr);
/* If the mac address is invalid, use random mac address */