From 28c7522e26f2edfb43089f7c013131ae8aec804b Mon Sep 17 00:00:00 2001
From: wdfk-prog <1425075683@qq.com>
Date: Thu, 13 Jun 2024 09:14:24 +0800
Subject: [PATCH] =?UTF-8?q?[drivers][serial=20V1]poll=20tx=20=E5=A2=9E?=
 =?UTF-8?q?=E5=8A=A0=E5=BC=82=E5=B8=B8=E9=80=80=E5=87=BA=E6=9C=BA=E5=88=B6?=
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---
 components/drivers/include/drivers/serial.h | 6 +++---
 components/drivers/serial/serial.c          | 6 ++++--
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/components/drivers/include/drivers/serial.h b/components/drivers/include/drivers/serial.h
index 9438ed43f9..d90b90607c 100644
--- a/components/drivers/include/drivers/serial.h
+++ b/components/drivers/include/drivers/serial.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2023, RT-Thread Development Team
+ * Copyright (c) 2006-2024, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -85,8 +85,8 @@
 #define RT_SERIAL_TX_DATAQUEUE_SIZE     2048
 #define RT_SERIAL_TX_DATAQUEUE_LWM      30
 
-#define RT_SERIAL_FLOWCONTROL_CTSRTS     1
-#define RT_SERIAL_FLOWCONTROL_NONE       0
+#define RT_SERIAL_FLOWCONTROL_CTSRTS    1
+#define RT_SERIAL_FLOWCONTROL_NONE      0
 
 /* Default config for serial_configure structure */
 #define RT_SERIAL_CONFIG_DEFAULT           \
diff --git a/components/drivers/serial/serial.c b/components/drivers/serial/serial.c
index f2e19aa760..19043e2ad2 100644
--- a/components/drivers/serial/serial.c
+++ b/components/drivers/serial/serial.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2023, RT-Thread Development Team
+ * Copyright (c) 2006-2024, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -278,7 +278,9 @@ rt_inline int _serial_poll_tx(struct rt_serial_device *serial, const rt_uint8_t
             serial->ops->putc(serial, '\r');
         }
 
-        serial->ops->putc(serial, *data);
+        if(serial->ops->putc(serial, *data) < 0) {
+            break;
+        }
 
         ++ data;
         -- length;