[PATCH 1/2] kbuild: do not pass -r to genksyms when *.symref does not exist

[Masahiro Yamada]

There is no need to pass '-r /dev/null', which is no-op.

Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
---

 scripts/Makefile.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 8f423a1faf50..36eae845a3e3 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -110,7 +110,7 @@ $(obj)/%.i: $(obj)/%.c FORCE
 genksyms = scripts/genksyms/genksyms		\
 	$(if $(1), -T $(2))			\
 	$(if $(KBUILD_PRESERVE), -p)		\
-	-r $(or $(wildcard $(2:.symtypes=.symref)), /dev/null)
+	$(addprefix -r , $(wildcard $(2:.symtypes=.symref)))
 
 # These mirror gensymtypes_S and co below, keep them in synch.
 cmd_gensymtypes_c = $(CPP) -D__GENKSYMS__ $(c_flags) $< | $(genksyms)
-- 
2.43.0