The definition and declaration of GetAcpiRsdpFromMemory doesn't match. We don't get a compile error yet because UINTN is the same as UINT64 on 64bit machines. As the function works on memory addresses, UINTN is the correct type of the input parameters. Signed-off-by: Corvin Köhne <corvink@FreeBSD.org> Tested-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Peter Grehan <grehan@freebsd.org>