[PATCH] c-user: Document rtems_semaphore_obtain() errors

[Gedare Bloom]

ok

On Fri, Apr 16, 2021 at 12:59 AM Sebastian Huber
<sebastian.huber at embedded-brains.de> wrote:
>
> 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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