[PATCH] net: broadcom: bcm4908_enet: handle -EPROBE_DEFER when getting MAC
From: Rafał Miłecki <zajec5@gmail.com>
Date: 2022-09-15 13:30:36
Subsystem:
broadcom bcm4908 ethernet driver, networking drivers, the rest · Maintainers:
Rafał Miłecki, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Rafał Miłecki <rafal@milecki.pl> 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> --- drivers/net/ethernet/broadcom/bcm4908_enet.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bcm4908_enet.c b/drivers/net/ethernet/broadcom/bcm4908_enet.c
index e5e17a182f9d..489367fa5748 100644
--- a/drivers/net/ethernet/broadcom/bcm4908_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c@@ -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)
--
2.34.1