[PATCH] net: mv643xx_eth: handle EPROBE_DEFER

[Mauri Sandberg]

Obtaining MAC address may be deferred in cases when the MAC is stored
in NVMEM block and it may now be ready upon the first retrieval attempt
returing EPROBE_DEFER. Handle it here and leave logic otherwise as it
was.

Signed-off-by: Mauri Sandberg <maukka@xxxxxxxxxxxx>
---
 drivers/net/ethernet/marvell/mv643xx_eth.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index 105247582684..0694f53981f2 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -2740,7 +2740,10 @@ static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev,
 		return -EINVAL;
 	}
 
-	of_get_mac_address(pnp, ppd.mac_addr);
+	ret = of_get_mac_address(pnp, ppd.mac_addr);
+
+	if (ret == -EPROBE_DEFER)
+		return ret;
 
 	mv643xx_eth_property(pnp, "tx-queue-size", ppd.tx_queue_size);
 	mv643xx_eth_property(pnp, "tx-sram-addr", ppd.tx_sram_addr);

base-commit: cfb92440ee71adcc2105b0890bb01ac3cddb8507
-- 
2.25.1