From 9b2b700fa0e3a8edadb38f09c917a3e3f013347f Mon Sep 17 00:00:00 2001
From: Far <yesiyuan2@huawei.com>
Date: Tue, 27 Apr 2021 16:49:23 +0800
Subject: [PATCH] fix: some branch in format does not release the vnode mutex
 properly

if fatfs_mkfs returns a error, format may return without drop the vnode mutex, which may cause deadlock

Close #I3OFAY
---
 fs/fat/os_adapt/format.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/fat/os_adapt/format.c b/fs/fat/os_adapt/format.c
index 72a1a6f0..e2b3458c 100644
--- a/fs/fat/os_adapt/format.c
+++ b/fs/fat/os_adapt/format.c
@@ -78,6 +78,7 @@ int format(const char *dev, int sectors, int option)
     }
     err = fatfs_mkfs(device, sectors, option);
     if (err < 0) {
+        VnodeDrop();
         set_errno(-err);
         return -1;
     }