From 8baf3d98e157a9c2f7742d7d6c7685caa40dac76 Mon Sep 17 00:00:00 2001
From: Bernard Xiong <bernard.xiong@gmail.com>
Date: Sat, 28 Jul 2018 16:34:51 +0800
Subject: [PATCH] [DFS] fix the mkfs issue for multi-mounted fatfs

---
 components/dfs/filesystems/elmfat/dfs_elm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/components/dfs/filesystems/elmfat/dfs_elm.c b/components/dfs/filesystems/elmfat/dfs_elm.c
index a5dfdd0258..2aa8fb6522 100644
--- a/components/dfs/filesystems/elmfat/dfs_elm.c
+++ b/components/dfs/filesystems/elmfat/dfs_elm.c
@@ -269,6 +269,10 @@ int dfs_elm_mkfs(rt_device_t dev_id)
             f_mount(fat, logic_nbr, (BYTE)index);
         }
     }
+    else
+    {
+        logic_nbr[0] = '0' + index;
+    }
 
     /* [IN] Logical drive number */
     /* [IN] Format options */