From c8e27adf1f357bf50d41744fde82738b50e1c214 Mon Sep 17 00:00:00 2001
From: tyx <462747508@qq.com>
Date: Tue, 9 Jul 2019 21:34:56 +0800
Subject: [PATCH] =?UTF-8?q?[src][ipc]=E5=AE=8C=E5=96=84=20message=20queue?=
 =?UTF-8?q?=20=E7=9B=B8=E5=85=B3=E5=AE=9A=E4=B9=89?=
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---
 include/rtthread.h | 4 ++--
 src/ipc.c          | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/rtthread.h b/include/rtthread.h
index 955ea51c50..04db77da46 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -378,8 +378,8 @@ rt_mq_t rt_mq_create(const char *name,
                      rt_uint8_t  flag);
 rt_err_t rt_mq_delete(rt_mq_t mq);
 
-rt_err_t rt_mq_send(rt_mq_t mq, void *buffer, rt_size_t size);
-rt_err_t rt_mq_urgent(rt_mq_t mq, void *buffer, rt_size_t size);
+rt_err_t rt_mq_send(rt_mq_t mq, const void *buffer, rt_size_t size);
+rt_err_t rt_mq_urgent(rt_mq_t mq, const void *buffer, rt_size_t size);
 rt_err_t rt_mq_recv(rt_mq_t    mq,
                     void      *buffer,
                     rt_size_t  size,
diff --git a/src/ipc.c b/src/ipc.c
index e293eee8cd..39cf217baa 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -1960,7 +1960,7 @@ RTM_EXPORT(rt_mq_delete);
  *
  * @return the error code
  */
-rt_err_t rt_mq_send(rt_mq_t mq, void *buffer, rt_size_t size)
+rt_err_t rt_mq_send(rt_mq_t mq, const void *buffer, rt_size_t size)
 {
     register rt_ubase_t temp;
     struct rt_mq_message *msg;
@@ -2050,7 +2050,7 @@ RTM_EXPORT(rt_mq_send);
  *
  * @return the error code
  */
-rt_err_t rt_mq_urgent(rt_mq_t mq, void *buffer, rt_size_t size)
+rt_err_t rt_mq_urgent(rt_mq_t mq, const void *buffer, rt_size_t size)
 {
     register rt_ubase_t temp;
     struct rt_mq_message *msg;