tooling: Fix parallel kbuild

The define decouples the calling make from the recursively called one.
Fix it by prefixing the latter with "+".

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

diff --git a/Makefile b/Makefile
index 9d12b64da07cb7f1dd010c989108c6fd661bc55e..f312598d49a29ebee43d618dad9ac50e7255f9b5 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,7 @@ INSTALL_MOD_PATH ?= $(DESTDIR)
 export INSTALL_MOD_PATH
 
 define run-kbuild =
-       $(Q)$(MAKE) -C $(KDIR) M=$$PWD $@
+       +$(Q)$(MAKE) -C $(KDIR) M=$$PWD $@
 endef
 
 modules: