From 42b2e418f9a2ef7c8f3681ba544c2da59f4e005d Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Tue, 5 Apr 2022 02:04:04 +0200 Subject: [PATCH] net: ethernet: mv643xx: Fix over zealous checking of_get_mac_address() [ Upstream commit 11f8e7c122ce013fa745029fa8c94c6db69c2e54 ] There is often not a MAC address available in an EEPROM accessible by Linux with Marvell devices. Instead the bootload has the MAC address and directly programs it into the hardware. So don't consider an error from of_get_mac_address() has fatal. However, the check was added for the case where there is a MAC address in an the EEPROM, but the EEPROM has not probed yet, and -EPROBE_DEFER is returned. In that case the error should be returned. So make the check specific to this error code. Cc: Mauri Sandberg Reported-by: Thomas Walther Fixes: 42404d8f1c01 ("net: mv643xx_eth: process retval from of_get_mac_address") Signed-off-by: Andrew Lunn Link: https://lore.kernel.org/r/20220405000404.3374734-1-andrew@lunn.ch Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/marvell/mv643xx_eth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c index 1b61fe2e9b4d5..90fd5588e20dd 100644 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c @@ -2747,7 +2747,7 @@ static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev, } ret = of_get_mac_address(pnp, ppd.mac_addr); - if (ret) + if (ret == -EPROBE_DEFER) return ret; mv643xx_eth_property(pnp, "tx-queue-size", ppd.tx_queue_size); -- 2.30.2