From 84cb21791face87ba8633b03582e9f4d4bc9bb18 Mon Sep 17 00:00:00 2001
From: Jukka Laitinen <jukka.laitinen@tii.ae>
Date: Thu, 3 Apr 2025 11:30:52 +0300
Subject: [PATCH] libc/semaphore: Read semaphore value by using NXSEM_COUNT
 macro

We should not access semaphore internals directly outside sched/semaphore.

Just read it via the NXSEM_COUNT macro provided.

Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
---
 libs/libc/semaphore/sem_getvalue.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libs/libc/semaphore/sem_getvalue.c b/libs/libc/semaphore/sem_getvalue.c
index 194f5fa1ef..14706cea05 100644
--- a/libs/libc/semaphore/sem_getvalue.c
+++ b/libs/libc/semaphore/sem_getvalue.c
@@ -29,6 +29,7 @@
 #include <errno.h>
 
 #include <nuttx/semaphore.h>
+#include <nuttx/atomic.h>
 
 /****************************************************************************
  * Public Functions
@@ -64,7 +65,7 @@ int nxsem_get_value(FAR sem_t *sem, FAR int *sval)
 {
   if (sem != NULL && sval != NULL)
     {
-      *sval = sem->semcount;
+      *sval = atomic_read(NXSEM_COUNT(sem));
       return OK;
     }