Mkinitcpio and missing firmware modules

While updating my arch Linux system today, I got following warnings :

        ==> WARNING: Possibly missing firmware for module: aic94xx
        ==> WARNING: Possibly missing firmware for module: bfa

Didn't know that I would need those modules (no Adaptec SAS nor Brocade Fibre Channel hardware). Google quickly revealed that the messages are due to the new version of mkinitcpio trying to find all firmware files, needed or not.

Ref : http://www.gauthampdas.com/blog/tech/linux/archlinux-mkinitcpio-and-warnings-about-missing-firmware-modules