--- a/makefile	2021-05-16 02:02:11.148664390 +0300
+++ b/makefile	2021-05-18 02:04:02.210673988 +0300
@@ -4,8 +4,10 @@
 # additional $(MAKEFLAGS) with 'w' passed
 # use $(filter-out w,$(MAKEFLAGS)) instead of $(MAKEFLAGS)
 
-%: force 
-	@$(MAKE) -f Makefile $(filter-out w,$(MAKEFLAGS)) $@
+%: force
+# -w already filtered by buildroot
+	@$(MAKE) -f Makefile $@
+#	@$(MAKE) -f Makefile $(filter-out w,$(MAKEFLAGS)) $@
 
 %_defconfig: force
 	@echo "Extract CHIP NAME ($(firstword $(subst _, ,$@))) to $(SSTAR_CHIP_FILE)"
@@ -13,7 +15,7 @@
 	@echo $(strip $(firstword $(subst _, ,$@))) > $(SSTAR_CHIP_FILE)
 	@$(MAKE) -f Makefile $(filter-out w,$(MAKEFLAGS)) $@
 
-GNUmakefile: force 
+GNUmakefile: force
 	@$(MAKE) -f Makefile $(filter-out w,$(MAKEFLAGS)) $(filter-out GNUmakefile,$@)
 
 makefile:;