diff options
Diffstat (limited to 'target/linux/bcm4908/patches-5.4/078-v6.1-0001-net-broadcom-bcm4908_enet-handle-EPROBE_DEFER-when-g.patch')
| -rw-r--r-- | target/linux/bcm4908/patches-5.4/078-v6.1-0001-net-broadcom-bcm4908_enet-handle-EPROBE_DEFER-when-g.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/bcm4908/patches-5.4/078-v6.1-0001-net-broadcom-bcm4908_enet-handle-EPROBE_DEFER-when-g.patch b/target/linux/bcm4908/patches-5.4/078-v6.1-0001-net-broadcom-bcm4908_enet-handle-EPROBE_DEFER-when-g.patch new file mode 100644 index 0000000000..f97a9094ee --- /dev/null +++ b/target/linux/bcm4908/patches-5.4/078-v6.1-0001-net-broadcom-bcm4908_enet-handle-EPROBE_DEFER-when-g.patch @@ -0,0 +1,61 @@ +From e93a766da57fff3273bcb618edf5dfca1fb86b89 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Thu, 15 Sep 2022 15:30:13 +0200 +Subject: [PATCH] net: broadcom: bcm4908_enet: handle -EPROBE_DEFER when + getting MAC +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +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> +--- + drivers/net/ethernet/broadcom/bcm4908_enet.c | 13 +++++++++---- + 1 file changed, 9 insertions(+), 4 deletions(-) + +--- a/drivers/net/ethernet/broadcom/bcm4908_enet.c ++++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c +@@ -714,10 +714,14 @@ static int bcm4908_enet_probe(struct pla + + SET_NETDEV_DEV(netdev, &pdev->dev); + mac = of_get_mac_address(dev->of_node); +- if (!IS_ERR(mac)) ++ if (!IS_ERR(mac)) { + ether_addr_copy(netdev->dev_addr, mac); +- else ++ } else if (PTR_ERR(mac) == -EPROBE_DEFER) { ++ err = -EPROBE_DEFER; ++ goto err_dma_free; ++ } else { + eth_hw_addr_random(netdev); ++ } + netdev->netdev_ops = &bcm4908_enet_netdev_ops; + netdev->min_mtu = ETH_ZLEN; + netdev->mtu = ETH_DATA_LEN; +@@ -726,14 +730,17 @@ static int bcm4908_enet_probe(struct pla + 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) |