[Bug 2153] New: Termios setAttributes callback is broken on SMP

bugzilla-daemon at rtems.org bugzilla-daemon at rtems.org
Tue Nov 26 07:34:11 UTC 2013


             Bug #: 2153
           Summary: Termios setAttributes callback is broken on SMP
    Classification: Unclassified
           Product: RTEMS
           Version: HEAD
          Platform: All
        OS/Version: RTEMS
            Status: NEW
          Severity: normal
          Priority: P3
         Component: cpukit
        AssignedTo: joel.sherrill at oarcorp.com
        ReportedBy: sebastian.huber at embedded-brains.de

The setAttributes callback usually has to modify some control registers using a
read-modify-write sequence.  In case the registers are also used by interrupt
service routines the corresponding ISR lock (rtems_termios_tty::interrupt_lock)
must be used.  The setAttributes callback has no easy access to this lock.

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