From c1e8c2a024eb89fb3acaf8089e5843921a5fe4a7 Mon Sep 17 00:00:00 2001
From: Devaev Maxim <mdevaev@gmail.com>
Date: Fri, 29 Jun 2018 01:55:06 +0300
Subject: [PATCH] fixed os/clean-all

---
 os/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/os/Makefile b/os/Makefile
index ff43bdeb..b3455e08 100644
--- a/os/Makefile
+++ b/os/Makefile
@@ -21,5 +21,6 @@ install: pi-builder
 clean: pi-builder
 	cd pi-builder && make clean
 
-clean-all: clean
+clean-all:
+	-cd pi-builder && make clean
 	rm -rf pi-builder