From e6fedb6e9bfbef07c4bcc065a5538d466abee19f Mon Sep 17 00:00:00 2001
From: Bernard Xiong <bernard.xiong@gmail.com>
Date: Sat, 28 Jul 2018 20:22:47 +0800
Subject: [PATCH] [DeviceDrivers] Remove warning in Kconfig

---
 components/drivers/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/components/drivers/Kconfig b/components/drivers/Kconfig
index 4ed6f34d6d..f27c70c481 100755
--- a/components/drivers/Kconfig
+++ b/components/drivers/Kconfig
@@ -283,6 +283,7 @@ menu "Using USB"
                         bool "Enable to use device as CDC device"
                         default n
                     config RT_USB_DEVICE_NONE
+                        bool
                         default y
                     config RT_USB_DEVICE_MSTORAGE
                         bool "Enable to use device as Mass Storage device"