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net: macb: do not copy the mac address if NULL 

This patch fixes the MAC address setup in the probe. The MAC address
retrieved using of_get_mac_address was checked for not containing an
error, but it may also be NULL which wasn't tested. Fix it by replacing
IS_ERR with IS_ERR_OR_NULL.

Fixes: 541ddc66d6 ("net: macb: support of_get_mac_address new ERR_PTR error")
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Antoine Tenart 2019-06-21 17:26:35 +02:00 committed by David S. Miller
parent 55655e3d11
commit 2bf4ecbcc7
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/cadence/macb_main.c
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@ -4180,7 +4180,7 @@ static int macb_probe(struct platform_device *pdev)
if (PTR_ERR(mac) == -EPROBE_DEFER) {
err = -EPROBE_DEFER;
goto err_out_free_netdev;
} else if (!IS_ERR(mac)) {
} else if (!IS_ERR_OR_NULL(mac)) {
ether_addr_copy(bp->dev->dev_addr, mac);
} else {
macb_get_hwaddr(bp);