... which causes modprobe (sys-apps/module-init-tools-3.9?) to show the following warning: WARNING: All config files need .conf: /etc/modprobe.d/wl, it will be ignored in a future release.
I think it is linux-mod.eclass issue.
Created attachment 197984 [details, diff] linux-mod-fix-incorrect-modulesd.patch
Thanks, MATSUU. This patch is committed.