Don't require 'compat_sys_fadvise64_64' when __ARCH_WANT_COMPAT_FADVISE64_64 is not set. Fixes this build error when CONFIG_ADVISE_SYSCALLS is not set: include/uapi/asm-generic/unistd.h:649:49: error: 'compat_sys_fadvise64_64' undeclared here (not in a function); did you mean 'ksys_fadvise64_64'? 649 | __SC_COMP(__NR3264_fadvise64, sys_fadvise64_64, compat_sys_fadvise64_64) arch/riscv/kernel/compat_syscall_table.c:12:42: note: in definition of macro '__SYSCALL' 12 | #define __SYSCALL(nr, call) [nr] = (call), include/uapi/asm-generic/unistd.h:649:1: note: in expansion of macro '__SC_COMP' 649 | __SC_COMP(__NR3264_fadvise64, sys_fadvise64_64, compat_sys_fadvise64_64) Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx> Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx> Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx> Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: linux-arch@xxxxxxxxxxxxxxx Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: linux-mm@xxxxxxxxx --- include/uapi/asm-generic/unistd.h | 2 ++ 1 file changed, 2 insertions(+) --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -645,8 +645,10 @@ __SC_COMP(__NR_execve, sys_execve, compa #define __NR3264_mmap 222 __SC_3264(__NR3264_mmap, sys_mmap2, sys_mmap) /* mm/fadvise.c */ +#ifdef __ARCH_WANT_COMPAT_FADVISE64_64 #define __NR3264_fadvise64 223 __SC_COMP(__NR3264_fadvise64, sys_fadvise64_64, compat_sys_fadvise64_64) +#endif /* mm/, CONFIG_MMU only */ #ifndef __ARCH_NOMMU
