#9601 BLOC Not Tri: Loss of serial Data Carrier Detect signal on suspend/resume

[Zarro Boogs per Child]

#9601: Loss of serial Data Carrier Detect signal on suspend/resume
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           Reporter:  dsaxena       |       Owner:  dsaxena      
               Type:  defect        |      Status:  new          
           Priority:  blocker       |   Milestone:  Not Triaged  
          Component:  not assigned  |     Version:  not specified
         Resolution:                |    Keywords:               
        Next_action:  diagnose      |    Verified:  0            
Deployment_affected:                |   Blockedby:               
           Blocking:  9420, 9458    |  
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Comment(by wmb at firmworks.com):

 DCD is only useful in the context of serial ports connected to modems.
 The Unix tty driver, and possibly the Linux one as well, would block on
 (or maybe fail) an open() until DCD was asserted.  This implemented the
 "wait for a connection to be established" semantics that were useful when
 you had a bank of dialin modems.

 That is soooooo ancient history.

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Ticket URL: <http://dev.laptop.org/ticket/9601#comment:6>
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