From 39b25f660ab8beb73aac07ace9d47781e0796731 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Tue, 8 Nov 2022 19:08:31 -0500
Subject: [PATCH] [sensor] use rt_ssize_t as the return value data type

---
 components/drivers/include/drivers/sensor.h | 2 +-
 components/drivers/sensors/sensor.c         | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/components/drivers/include/drivers/sensor.h b/components/drivers/include/drivers/sensor.h
index 615dd1f367..49208c53c8 100644
--- a/components/drivers/include/drivers/sensor.h
+++ b/components/drivers/include/drivers/sensor.h
@@ -238,7 +238,7 @@ struct rt_sensor_data
 
 struct rt_sensor_ops
 {
-    rt_size_t (*fetch_data)(rt_sensor_t sensor, void *buf, rt_size_t len);
+    rt_ssize_t (*fetch_data)(rt_sensor_t sensor, void *buf, rt_size_t len);
     rt_err_t (*control)(rt_sensor_t sensor, int cmd, void *arg);
 };
 
diff --git a/components/drivers/sensors/sensor.c b/components/drivers/sensors/sensor.c
index 25fd5681be..0594dbe1fa 100644
--- a/components/drivers/sensors/sensor.c
+++ b/components/drivers/sensors/sensor.c
@@ -123,15 +123,15 @@ static rt_err_t _sensor_irq_init(rt_sensor_t sensor)
 }
 
 /* sensor local ops */
-static rt_size_t _local_fetch_data(rt_sensor_t sensor, void *buf, rt_size_t len)
+static rt_ssize_t _local_fetch_data(rt_sensor_t sensor, void *buf, rt_size_t len)
 {
     LOG_D("Undefined fetch_data");
-    return 0;
+    return -RT_EINVAL;
 }
 static rt_err_t _local_control(rt_sensor_t sensor, int cmd, void *arg)
 {
     LOG_D("Undefined control");
-    return RT_ERROR;
+    return -RT_EINVAL;
 }
 static struct rt_sensor_ops local_ops =
 {
-- 
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