From b4168cc60df215bf316567dd2952de27559f0d35 Mon Sep 17 00:00:00 2001
From: armink <armink.ztl@gmail.com>
Date: Sun, 22 Oct 2017 22:14:55 +0800
Subject: [PATCH] [DFS] Fix `fd_new` failed return value.

---
 components/dfs/src/dfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/dfs/src/dfs.c b/components/dfs/src/dfs.c
index e5a8aa549d..c83aad3e2d 100644
--- a/components/dfs/src/dfs.c
+++ b/components/dfs/src/dfs.c
@@ -128,7 +128,7 @@ int fd_new(void)
     /* can't find an empty fd entry */
     if (idx == DFS_FD_MAX)
     {
-        idx = -1;
+        idx = -(1 + DFS_FD_OFFSET);
         goto __result;
     }