From df9a23c534f57e6f5b06acfbe6db8b636894e0ad Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Wed, 17 Nov 2021 15:57:15 -0500
Subject: [mutex] use RT_IPC_FLAG_PRIO to replace RT_IPC_FLAG_FIFO

---
 components/drivers/src/pipe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'components/drivers/src')

diff --git a/components/drivers/src/pipe.c b/components/drivers/src/pipe.c
index af90f13c6f..bfb07fa950 100644
--- a/components/drivers/src/pipe.c
+++ b/components/drivers/src/pipe.c
@@ -451,7 +451,7 @@ rt_pipe_t *rt_pipe_create(const char *name, int bufsz)
 
     rt_memset(pipe, 0, sizeof(rt_pipe_t));
     pipe->is_named = RT_TRUE; /* initialize as a named pipe */
-    rt_mutex_init(&(pipe->lock), name, RT_IPC_FLAG_FIFO);
+    rt_mutex_init(&(pipe->lock), name, RT_IPC_FLAG_PRIO);
     rt_wqueue_init(&(pipe->reader_queue));
     rt_wqueue_init(&(pipe->writer_queue));
 
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