On Tue, Jun 6, 2023, at 11:28, Geert Uytterhoeven wrote: > On Tue, Jun 6, 2023 at 11:16 AM Arnd Bergmann <arnd@xxxxxxxx> wrote: >> On Tue, Jun 6, 2023, at 11:01, Geert Uytterhoeven wrote: >> >> This won't work when PCS_LYNX is a loadable module and >> STMMAC is built-in. I think we should just select PCS_LYNX > > Oops, you're right, forgot about that case. > What about using IS_REACHABLE() instead? > No, that won't work either, as DWMAC_SOCFPGA can be modular, > with STMMAC builtin. It would work because of the 'select PCS_LYNX' below DWMAC_SOCFPGA, but I think that's too fragile and would easily break when another dwmac front-end starts using PCS_LYNX without have the same select statement. I think we should always avoid IS_REACHABLE(). Arnd