On wrl8 rcpl1 drivers/edac contains four files: axxia_edac.c axxia_edac-l2_cpu.c axxia_edac-l3.c axxia_edac-mc.c ... axxia_edac.c seems to implement the same thing as the other three files. axxia_edac.c is not part of the makefile and shouldn't be built. The commit history of these files are really, really crappy so it's hard to tell which driver is up to date. Please double check with the author of these drivers that the correct implementation is used and remove the other.