On Wed, Aug 25, 2021 at 4:40 AM Geert Uytterhoeven <geert+renesas@xxxxxxxxx> wrote: > > On ia64/allmodconfig: > > drivers/of/fdt.c:609:20: error: conflicting types for 'reserve_elfcorehdr'; have 'void(void)' > 609 | static void __init reserve_elfcorehdr(void) > | ^~~~~~~~~~~~~~~~~~ > arch/ia64/include/asm/meminit.h:43:12: note: previous declaration of 'reserve_elfcorehdr' with type 'int(u64 *, u64 *)' {aka 'int(long long unsigned int *, long long unsigned int *)'} > 43 | extern int reserve_elfcorehdr(u64 *start, u64 *end); > | ^~~~~~~~~~~~~~~~~~ There's no need for the ia64 version to be non-static. Just needs a forward declaration. arch/ia64/include/asm/meminit.h:extern int reserve_elfcorehdr(u64 *start, u64 *end); arch/ia64/kernel/setup.c: if (reserve_elfcorehdr(&rsvd_region[n].start, arch/ia64/kernel/setup.c:int __init reserve_elfcorehdr(u64 *start, u64 *end) Rob