From 9d66875636614172f7323c5986bfc3cf93b15c13 Mon Sep 17 00:00:00 2001
From: tmk <hasu@tmk-kbd.com>
Date: Thu, 7 Sep 2017 09:00:57 +0900
Subject: [PATCH] core: Fix dfu-programmer version check

---
 tmk_core/rules.mk | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tmk_core/rules.mk b/tmk_core/rules.mk
index 66b4cbd8..0d0b6afb 100644
--- a/tmk_core/rules.mk
+++ b/tmk_core/rules.mk
@@ -427,7 +427,7 @@ dfu: $(TARGET).hex
 	done
 	@echo
 
-ifneq (, $(findstring 0.7, $(shell dfu-programmer --version 2>&1)))
+ifneq (, $(findstring 0.7, $(shell dfu-programmer 2>/dev/null && dfu-programmer --version 2>&1)))
 	dfu-programmer $(MCU) erase --force
 else
 	dfu-programmer $(MCU) erase
@@ -447,7 +447,7 @@ flip-ee: $(TARGET).hex $(TARGET).eep
 	$(REMOVE) $(TARGET)eep.hex
 
 dfu-ee: $(TARGET).hex $(TARGET).eep
-ifneq (, $(findstring 0.7, $(shell dfu-programmer --version 2>&1)))
+ifneq (, $(findstring 0.7, $(shell dfu-programmer 2>/dev/null && dfu-programmer --version 2>&1)))
 	dfu-programmer $(MCU) flash --eeprom $(TARGET).eep
 else
 	dfu-programmer $(MCU) flash-eeprom $(TARGET).eep
-- 
2.39.3