Hi Greg, > > +obj-y += fujitsu/ > > Why a sub directory for just one .c file? As Arnd mentioned, I placed the sub directory following the convention of drivers/soc. > > + help > > + Say Y here if you want to enable diag interrupt on Fujitsu A64FX. > > + > > + If unsure, say N. > > You need to provide more information about what this driver does and what it is > here. OK, I will add a description. Thank you. Hitomi Hasegawa