The LAN865x Ethernet driver is missing an .ndo_eth_ioctl implementation, which is required to handle standard MII ioctl commands such as SIOCGMIIREG and SIOCSMIIREG. These commands are used by userspace tools (e.g., ethtool, mii-tool) to access and configure PHY registers. This patch adds the lan865x_eth_ioctl() function to pass ioctl calls to the PHY layer via phy_mii_ioctl() when the interface is up. Without this handler, MII ioctl operations return -EINVAL, breaking PHY diagnostics and configuration from userspace. Fixes: 5cd2340cb6a3 ("microchip: lan865x: add driver support for Microchip's LAN865X MAC-PHY") Signed-off-by: Parthiban Veerasooran --- drivers/net/ethernet/microchip/lan865x/lan865x.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/ethernet/microchip/lan865x/lan865x.c b/drivers/net/ethernet/microchip/lan865x/lan865x.c index dd436bdff0f8..09e6a0406350 100644 --- a/drivers/net/ethernet/microchip/lan865x/lan865x.c +++ b/drivers/net/ethernet/microchip/lan865x/lan865x.c @@ -314,12 +314,22 @@ static int lan865x_net_open(struct net_device *netdev) return 0; } +static int lan865x_eth_ioctl(struct net_device *netdev, struct ifreq *rq, + int cmd) +{ + if (!netif_running(netdev)) + return -EINVAL; + + return phy_mii_ioctl(netdev->phydev, rq, cmd); +} + static const struct net_device_ops lan865x_netdev_ops = { .ndo_open = lan865x_net_open, .ndo_stop = lan865x_net_close, .ndo_start_xmit = lan865x_send_packet, .ndo_set_rx_mode = lan865x_set_multicast_list, .ndo_set_mac_address = lan865x_set_mac_address, + .ndo_eth_ioctl = lan865x_eth_ioctl, }; static int lan865x_probe(struct spi_device *spi) base-commit: 62a2b3502573091dc5de3f9acd9e47f4b5aac9a1 -- 2.34.1