From 14a86d288f44180af4575feb5837a668e67f20cd Mon Sep 17 00:00:00 2001
From: dianjixz <dianjixz@m5stack.com>
Date: Fri, 24 May 2024 17:20:04 +0800
Subject: [PATCH] [add] uart Close decision

---
 components/DeviceDriver/party/linux_uart/linux_uart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/DeviceDriver/party/linux_uart/linux_uart.c b/components/DeviceDriver/party/linux_uart/linux_uart.c
index 507e3ec..a48fca6 100644
--- a/components/DeviceDriver/party/linux_uart/linux_uart.c
+++ b/components/DeviceDriver/party/linux_uart/linux_uart.c
@@ -175,7 +175,7 @@ int linux_uart_init(char* dev, void* param)
 void linux_uart_deinit(int fd)
 {
     int res;
-
+    if(fd <= 0) return;
     res = close(fd);
     if (res < 0)
         fprintf(stderr, "uart close fd(%d) err:%s\n", fd, strerror(errno));