should be removed by:
commit fca07be1df52595d494c7524d17fb9294c385d5c
Author: Gregory Nutt <gnutt@nuttx.org>
Date: Tue Oct 10 08:43:10 2017 -0600
Squashed commit of the following:
Change all calls to mq_send() and mq_timedsend() in the OS to calls to
nxmq_send() and nxmq_timedsend(), making appropriate changes for differences
in return values.
sched/mqueue: Add internal function nxmq_send() and nxmq_timedsend() that are
equivalent to mq_send() and mq_timedsend() except that they do not create
cancellation points and do to not modify the errno variable.
Signed-off-by: chao.an <anchao@xiaomi.com>
b3d45fd6c0