[RTEMS Project] #3198: Add lazy update of line control and baud divisor to NS16550 serial driver

[RTEMS trac]

#3198: Add lazy update of line control and baud divisor to NS16550 serial driver
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 Reporter:  Sebastian Huber  |      Owner:  Sebastian Huber
     Type:  enhancement      |     Status:  assigned
 Priority:  normal           |  Milestone:  4.12.0
Component:  dev/serial       |    Version:
 Severity:  normal           |   Keywords:
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 Updates of the line control and baud divisor while transfers are in
 progress may lead to unpredictable behaviour on some chips.  Perform the
 updates only if necessary.

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Ticket URL: <http://devel.rtems.org/ticket/3198>
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