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net: broadcom: bcm4908_enet: handle -EPROBE_DEFER when getting MAC

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Reading MAC from OF may return -EPROBE_DEFER if underlaying NVMEM device
isn't ready yet. In such case pass that error code up and "wait" to be
probed later.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Link: https://lore.kernel.org/r/20220915133013.2243-1-zajec5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Rafał Miłecki 2022-09-15 15:30:13 +02:00 committed by Jakub Kicinski
parent caddb4e0d6
commit e93a766da5
1 changed files with 9 additions and 4 deletions
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13
drivers/net/ethernet/broadcom/bcm4908_enet.c
View File

@ -716,6 +716,8 @@ static int bcm4908_enet_probe(struct platform_device *pdev)
SET_NETDEV_DEV(netdev, &pdev->dev);
err = of_get_ethdev_address(dev->of_node, netdev);
if (err == -EPROBE_DEFER)
goto err_dma_free;
if (err)
eth_hw_addr_random(netdev);
netdev->netdev_ops = &bcm4908_enet_netdev_ops;
@ -726,14 +728,17 @@ static int bcm4908_enet_probe(struct platform_device *pdev)
netif_napi_add(netdev, &enet->rx_ring.napi, bcm4908_enet_poll_rx, NAPI_POLL_WEIGHT);
err = register_netdev(netdev);
if (err) {
bcm4908_enet_dma_free(enet);
return err;
}
if (err)
goto err_dma_free;
platform_set_drvdata(pdev, enet);
return 0;
err_dma_free:
bcm4908_enet_dma_free(enet);
return err;
}
static int bcm4908_enet_remove(struct platform_device *pdev)