From a431bb45791993bd6e6239b6621aa09ee43558c1 Mon Sep 17 00:00:00 2001
From: LiPeng <lipeng@espressif.com>
Date: Fri, 15 Sep 2023 23:49:20 +0800
Subject: [PATCH] fix(vfs): Fix event_write may not exit critical section

This commit fixes the event_write() function where the critical section
was unbalanced.

Merges https://github.com/espressif/esp-idf/pull/12258
---
 components/vfs/vfs_eventfd.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/components/vfs/vfs_eventfd.c b/components/vfs/vfs_eventfd.c
index a4f088352b47..11ff2fb7e7c0 100644
--- a/components/vfs/vfs_eventfd.c
+++ b/components/vfs/vfs_eventfd.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -267,14 +267,14 @@ static ssize_t event_write(int fd, const void *data, size_t size)
             s_events[fd].value += *val;
             ret = size;
             trigger_select_for_event(&s_events[fd]);
-
-            if (s_events[fd].support_isr) {
-                portEXIT_CRITICAL(&s_events[fd].data_spin_lock);
-            }
         } else {
             errno = EBADF;
             ret = -1;
         }
+
+        if (s_events[fd].support_isr) {
+            portEXIT_CRITICAL(&s_events[fd].data_spin_lock);
+        }
         _lock_release_recursive(&s_events[fd].lock);
     }
     return ret;