[RTEMS Project] #2935: Termios task driven mode not compatible with SMP

[RTEMS trac]

#2935: Termios task driven mode not compatible with SMP
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 Reporter:  Martin Aberg  |      Owner:  joel.sherrill@…
     Type:  defect        |     Status:  new
 Priority:  normal        |  Milestone:  4.12
Component:  cpukit        |    Version:  4.12
 Severity:  normal        |   Keywords:  termios smp
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 When the Termios task driven functioning mode is used,
 rtems_termios_open_tty() calls rtems_task_create() with RTEMS_NO_PREEMPT
 in the initial task mode parameter. RTEMS_NO_PREEMPT is not supported on
 SMP.

 rtems_task_create() returns RTEMS_UNSATISFIED in this SMP scenario and
 Termios ends up in rtems_fatal_error_occurred().

 Termios starts the RX and TX tasks successfully on SMP if RTEMS_NO_PREEMPT
 is removed from the initial task modes of these tasks. However, I suspect
 there may be assumptions on the NO_PREEMPT mode for the RX and TX tasks in
 other parts of Termios.

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Ticket URL: <http://devel.rtems.org/ticket/2935>
RTEMS Project <http://www.rtems.org/>
RTEMS Project