posix-users/message_passing.rst: Add status for cannot block in ISR

Updates #3857.
This commit is contained in:
Joel Sherrill 2020-01-24 07:59:38 -06:00
parent 55d69ad1fb
commit 565df31263

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@ -550,6 +550,8 @@ mq_receive - Receive a Message from a Message Queue
- The msg_len is less than the ``mq_msgsize`` attribute of the message queue
* - ``EAGAIN``
- The message queue is non-blocking, and the queue is empty
* - ``EAGAIN``
- The operation would block but has been called from an ISR
* - ``EINTR``
- The message queue is blocking. While the process was waiting for a message
to arrive on the queue, a signal arrived that interrupted the wait.