From 46a92aeebbe17d2a891b9f28da6d8665c192325d Mon Sep 17 00:00:00 2001
From: SPRESENSE <41312067+SPRESENSE@users.noreply.github.com>
Date: Mon, 11 Apr 2022 18:46:59 +0900
Subject: [PATCH] graphics/nxterm: Avoid accessing freed memory

Fix accessing freed priv data.
---
 graphics/nxterm/nxterm_driver.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/graphics/nxterm/nxterm_driver.c b/graphics/nxterm/nxterm_driver.c
index b7e5489b21d..3df3ad87da7 100644
--- a/graphics/nxterm/nxterm_driver.c
+++ b/graphics/nxterm/nxterm_driver.c
@@ -166,7 +166,9 @@ static int nxterm_close(FAR struct file *filep)
     {
       /* Yes.. Unregister the terminal device */
 
+      nxterm_sempost(priv);
       nxterm_unregister(priv);
+      return OK;
     }
   else
     {
@@ -346,7 +348,9 @@ static int nxterm_unlink(FAR struct inode *inode)
     {
       /* No.. Unregister the terminal device now */
 
+      nxterm_sempost(priv);
       nxterm_unregister(priv);
+      return OK;
     }
 
   nxterm_sempost(priv);