Currently, the ftgmac100 driver relies on the probe order to assign network interface names (e.g., eth0, eth1). This patch allows the driver to fetch the "ethernet" alias ID from the device tree via of_alias_get_id() and assign it to netdev->name before registering the netdev. This provides a standard and robust way to achieve deterministic interface naming (e.g., ethernet0 -> eth0) directly from the device tree, preventing potential userspace race conditions during network setup. Signed-off-by: Kyle Hsieh --- Hi all, This patch series introduces deterministic interface naming for the ftgmac100 driver by utilizing device tree aliases. Background: Currently, ftgmac100 assigns interface names strictly based on probe order. On platforms like the ASPEED AST2600, this often leads to naming collisions (e.g., mac2 and mac3 defaulting to eth0 and eth1). While userspace tools like systemd-udevd are typically responsible for renaming, we encounter a severe race condition on BMC systems: the NCSI driver frequently brings the management interface UP before udev can rename it, resulting in the kernel locking the name and rejecting the rename request. Solution: By parsing the "ethernet" alias from the device tree during probe, the driver can now assign the correct name out-of-the-box, completely bypassing the userspace race condition. Testing: - Tested on ASPEED AST2600 BMC. - Verified that device tree aliases (ethernet0 = &mac3, ethernet1 = &mac2) are correctly applied at probe time. Please review and consider for inclusion. Thanks, Kyle Hsieh --- drivers/net/ethernet/faraday/ftgmac100.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index 6d2fe5c2f390..e058a10500ee 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -1949,6 +1949,7 @@ static int ftgmac100_probe(struct platform_device *pdev) struct ftgmac100 *priv; struct device_node *np; int err = 0; + int alias_id; np = pdev->dev.of_node; if (np) { @@ -1973,6 +1974,11 @@ static int ftgmac100_probe(struct platform_device *pdev) if (!netdev) return -ENOMEM; + /* Assign interface name based on DTS alias (e.g., ethernet0 -> eth0) */ + alias_id = of_alias_get_id(pdev->dev.of_node, "ethernet"); + if (alias_id >= 0) + snprintf(netdev->name, IFNAMSIZ, "eth%d", alias_id); + SET_NETDEV_DEV(netdev, &pdev->dev); netdev->ethtool_ops = &ftgmac100_ethtool_ops; --- base-commit: eb3f4b7426cfd2b79d65b7d37155480b32259a11 change-id: 20260527-addethalias-d25e2f188697 Best regards, -- Kyle Hsieh