kbuild: rpm-pkg: fix jobserver unavailable warning

If "make rpm-pkg" or "make binrpm-pkg" is run with -j[jobs] option,
the following warning message is displayed.

  warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.

Follow the suggestion.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/scripts/package/Makefile b/scripts/package/Makefile
index 73f9f3192b9f..b559671d28ca 100644
--- a/scripts/package/Makefile
+++ b/scripts/package/Makefile
@@ -50,7 +50,7 @@ rpm-pkg rpm: FORCE
         $(MAKE) clean
         $(CONFIG_SHELL) $(MKSPEC) >$(objtree)/kernel.spec
         $(call cmd,src_tar,$(KERNELPATH),kernel.spec)
-        rpmbuild $(RPMOPTS) --target $(UTS_MACHINE) -ta $(KERNELPATH).tar.gz
+        +rpmbuild $(RPMOPTS) --target $(UTS_MACHINE) -ta $(KERNELPATH).tar.gz
         rm $(KERNELPATH).tar.gz kernel.spec
 
 # binrpm-pkg
@@ -58,7 +58,7 @@ rpm-pkg rpm: FORCE
 binrpm-pkg: FORCE
         $(MAKE) KBUILD_SRC=
         $(CONFIG_SHELL) $(MKSPEC) prebuilt > $(objtree)/binkernel.spec
-        rpmbuild $(RPMOPTS) --define "_builddir $(objtree)" --target \
+        +rpmbuild $(RPMOPTS) --define "_builddir $(objtree)" --target \
                 $(UTS_MACHINE) -bb $(objtree)/binkernel.spec
         rm binkernel.spec