Re: [PATCH] net: stmmac: Fix stmmac_mdio_unregister() build errors

[Maxime Chevallier <maxime.chevallier@bootlin.com>]

Hello,

On Wed,  7 Jun 2023 17:34:40 +0800
Feiyang Chen <chenfeiyang@loongson.cn> wrote:

> When CONFIG_PCS_LYNX is not set, lynx_pcs_destroy() will not be
> exported. Add #ifdef CONFIG_PCS_LYNX around that code to avoid
> build errors like these:
> 
> ld: drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.o: in function `stmmac_mdio_unregister':
> stmmac_mdio.c:(.text+0x1440): undefined reference to `lynx_pcs_destroy'

I have sent a series aiming to fix this yesterday [1], which I'll followup today
addressing the last pieces for the fix. Sorry about this,

Maxime

> Reported-by: Yanteng Si <siyanteng@loongson.cn>
> Fixes: 5d1f3fe7d2d5 ("net: stmmac: dwmac-sogfpga: use the lynx pcs driver")
> Signed-off-by: Feiyang Chen <chenfeiyang@loongson.cn>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> index c784a6731f08..c1a23846a01c 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> @@ -665,8 +665,10 @@ int stmmac_mdio_unregister(struct net_device *ndev)
>  	if (priv->hw->xpcs)
>  		xpcs_destroy(priv->hw->xpcs);
>  
> +#ifdef CONFIG_PCS_LYNX
>  	if (priv->hw->lynx_pcs)
>  		lynx_pcs_destroy(priv->hw->lynx_pcs);
> +#endif
>  
>  	mdiobus_unregister(priv->mii);
>  	priv->mii->priv = NULL;