From b66514686a8745ee36a4384dec044d3ae31d7dcb Mon Sep 17 00:00:00 2001
From: Shell <wangxiaoyao@rt-thread.com>
Date: Wed, 28 Jun 2023 09:11:17 +0800
Subject: [components/tty] fix bug on foreground app switch (#7726)

---
 components/drivers/tty/include/tty.h | 4 ++--
 components/drivers/tty/tty.c         | 5 +++--
 2 files changed, 5 insertions(+), 4 deletions(-)

(limited to 'components/drivers')

diff --git a/components/drivers/tty/include/tty.h b/components/drivers/tty/include/tty.h
index 298b033373..1c0fa09ca3 100644
--- a/components/drivers/tty/include/tty.h
+++ b/components/drivers/tty/include/tty.h
@@ -179,8 +179,8 @@ enum
 #define TTY_DRIVER_TYPE_SYSTEM      0x0001
 #define TTY_DRIVER_TYPE_CONSOLE     0x0002
 #define TTY_DRIVER_TYPE_SERIAL      0x0003
-#define TTY_DRIVER_TYPE_PTY     0x0004
-#define TTY_DRIVER_TYPE_SCC     0x0005  /* scc driver */
+#define TTY_DRIVER_TYPE_PTY         0x0004
+#define TTY_DRIVER_TYPE_SCC         0x0005  /* scc driver */
 #define TTY_DRIVER_TYPE_SYSCONS     0x0006
 
 /* tty magic number */
diff --git a/components/drivers/tty/tty.c b/components/drivers/tty/tty.c
index 10683b5f9d..748be743cb 100644
--- a/components/drivers/tty/tty.c
+++ b/components/drivers/tty/tty.c
@@ -5,7 +5,8 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2021.12.07     linzhenxing      first version
+ * 2021-12-07     linzhenxing  first version
+ * 2023-06-26     WangXiaoyao  fix bug on foreground app switch
  */
 #include <dfs_file.h>
 #include <dfs_fs.h>
@@ -41,7 +42,7 @@ const struct termios tty_std_termios = {  /* for the benefit of tty drivers  */
 void tty_initstack(struct tty_node *node)
 {
     node->lwp = RT_NULL;
-    node->next = node;
+    node->next = RT_NULL;
 }
 
 static struct tty_node tty_node_cache = { RT_NULL, RT_NULL };
-- 
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