yamt commented on code in PR #14465:
URL: https://github.com/apache/nuttx/pull/14465#discussion_r1839502661
##########
sched/semaphore/sem_post.c:
##########
@@ -78,21 +78,20 @@ int nxsem_post(FAR sem_t *sem)
uint8_t proto;
#endif
- DEBUGASSERT(sem != NULL);
-
/* The following operations must be performed with interrupts
* disabled because sem_post() may be called from an interrupt
* handler.
*/
flags = enter_critical_section();
- sem_count = sem->semcount;
+ sem_count = atomic_fetch_add(NXSEM_COUNT(sem), 1);
/* Check the maximum allowable value */
if (sem_count >= SEM_VALUE_MAX)
{
Review Comment:
i guess it's safer to use compare xchg.
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