Update #3993.
---
c-user/semaphore/directives.rst | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/c-user/semaphore/directives.rst b/c-user/semaphore/directives.rst
index 54f40a4..7c2a9c8 100644
--- a/c-user/semaphore/directives.rst
+++ b/c-user/semaphore/directives.rst
@@ -525,9 +525,17 @@ scheduler.
:c:macro:`RTEMS_INVALID_ID`
There was no semaphore associated with the identifier specified by ``id``.
+:c:macro:`RTEMS_NOT_DEFINED`
+ The semaphore uses a priority ceiling and there was no priority ceiling
+ defined for the :term:`home scheduler` of the calling task.
+
:c:macro:`RTEMS_UNSATISFIED`
The semaphore could not be obtained immediately.
+:c:macro:`RTEMS_INVALID_PRIORITY`
+ The semaphore uses a priority ceiling and the calling task had a current
+ priority less than the priority ceiling.
+
:c:macro:`RTEMS_INCORRECT_STATE`
Acquiring of the local, binary semaphore by the calling task would have
cased a deadlock.
--
2.26.2
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