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net: sparx5: Fix reading of the MAC address

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[ Upstream commit 588ab2dc25 ]

There is an issue with the checking of the return value of
'of_get_mac_address', which returns 0 on success and negative value on
failure. The driver interpretated the result the opposite way. Therefore
if there was a MAC address defined in the DT, then the driver was
generating a random MAC address otherwise it would use address 0.
Fix this by checking correctly the return value of 'of_get_mac_address'

Fixes: b74ef9f9cb ("net: sparx5: Do not use mac_addr uninitialized in mchp_sparx5_probe()")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Horatiu Vultur
2023-01-02 13:12:15 +01:00
committed by Greg Kroah-Hartman
parent 5896f55810
commit 2bab138b44
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/microchip/sparx5/sparx5_main.c
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@@ -824,7 +824,7 @@ static int mchp_sparx5_probe(struct platform_device *pdev)
if (err)
goto cleanup_config;
if (!of_get_mac_address(np, sparx5->base_mac)) {
if (of_get_mac_address(np, sparx5->base_mac)) {
dev_info(sparx5->dev, "MAC addr was not set, use random MAC\n");
eth_random_addr(sparx5->base_mac);
sparx5->base_mac[5] = 0;