[RTEMS Project] #2719: pthread_spin_unlock() returns wrong error status in case the lock is unlocked

[RTEMS trac]

#2719: pthread_spin_unlock() returns wrong error status in case the lock is
unlocked
-----------------------------+--------------------
 Reporter:  sebastian.huber  |      Owner:
     Type:  defect           |     Status:  new
 Priority:  normal           |  Milestone:  4.10.3
Component:  General          |    Version:  4.10
 Severity:  normal           |   Keywords:
-----------------------------+--------------------
 POSIX recommends the following:

 "If an implementation detects that the value specified by the lock
 argument to pthread_spin_unlock() refers to a spin lock object for which
 the current thread does not hold the lock, it is recommended that the
 function should fail and report an [EPERM] error."

 http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_spin_unlock.html

 In case the lock is unlocked, then there is no owner, thus the executing
 thread is not the owner of the lock.

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Ticket URL: <http://devel.rtems.org/ticket/2719>
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