In Arch Linux
mkinitcpio -p linux
shows
Possibly missing firmware for module: aic94xx
Possibly missing firmware for module: wd719x
git clone https://aur.archlinux.org/aic94xx-firmware.git
cd aic94xx-firmware
makepkg -sri
git clone https://aur.archlinux.org/wd719x-firmware.git
cd wd719x-firmware
makepkg -sri
and then mkinitcpio -p linux
again.
No need to be aggressive, I think you misunderstood my point. The warnings are not "inevitable". As I said, there are many drivers that it doesn't warn about. So I'm simply asking why it is that these two trigger a warning when none of the others do.