Re: [PATCH v2 net-next 3/5] drivers/net/phy: add connection between ethtool and phylib for PLCA

Andrew Lunn
2023-01-07T17:38:07Z

> + // if not enabling PLCA, skip a few sanity checks
> + if (plca_cfg->enabled <= 0)
> + goto apply_cfg;
> +
> + if (!linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1S_P2MP_Half_BIT,
> + phydev->advertising)) {
> + ret = -EOPNOTSUPP;
> + NL_SET_ERR_MSG(extack,
> + "Point to Multi-Point mode is not enabled");
> + }
> +
> + // allow setting node_id concurrently with enabled
> + if (plca_cfg->node_id >= 0)
> + curr_plca_cfg->node_id = plca_cfg->node_id;
> +
> + if (curr_plca_cfg->node_id >= 255) {
> + NL_SET_ERR_MSG(extack, "PLCA node ID is not set");
> + ret = -EINVAL;
> + goto out_drv;
> + }
> +
> +apply_cfg:
> + ret = phydev->drv->set_plca_cfg(phydev, plca_cfg);

Goto which don't jump to the end of the function is generally frowned
upon. I suggest you put these sanity checks into a little helper, so
you can avoid the goto.

With that change make, feel free to add my reviewed-by.

Andrew