From f58d3c5200d5a51a39503c5311422e2fb99d3d20 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 5 Feb 2023 18:35:33 -0500
Subject: rt_device_write/read return data type as rt_ssize_t rt_ssize_t can
 give negative error code, which follows the unix style correctly

---
 src/device.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/device.c b/src/device.c
index beba062952..9665788c77 100644
--- a/src/device.c
+++ b/src/device.c
@@ -311,7 +311,7 @@ RTM_EXPORT(rt_device_close);
  *
  * @note the unit of size/pos is a block for block device.
  */
-rt_size_t rt_device_read(rt_device_t dev,
+rt_ssize_t rt_device_read(rt_device_t dev,
                          rt_off_t    pos,
                          void       *buffer,
                          rt_size_t   size)
@@ -354,7 +354,7 @@ RTM_EXPORT(rt_device_read);
  *
  * @note the unit of size/pos is a block for block device.
  */
-rt_size_t rt_device_write(rt_device_t dev,
+rt_ssize_t rt_device_write(rt_device_t dev,
                           rt_off_t    pos,
                           const void *buffer,
                           rt_size_t   size)
-- 
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