#4131 BLOC First D: WLAN appears to die after some number of suspend/resumes

[Zarro Boogs per Child]

#4131: WLAN appears to die after some number of suspend/resumes
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 Reporter:  wad       |       Owner:  rchokshi              
     Type:  defect    |      Status:  new                   
 Priority:  blocker   |   Milestone:  First Deployment, V1.0
Component:  wireless  |     Version:                        
 Keywords:  mesh      |    Verified:  0                     
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 When running the ping test for #1752, we see units which stop responding
 (resuming) to pings, but which respond fine if the unit is woken manually
 (e.g. with the power button).  We have managed to stop the suspend/resume
 cycling on some machines without crashing the kernel (a difficult feat!),
 and the system thinks that it has a fully operational mesh interface: it
 still shows up on iwconfig and ifconfig.   Attempts to ping a laptop in
 this state, or to ping another mesh node from it fail w. 100% packet loss.

 This problem has been seen on at least four different machines, typically
 after running between 10,000 and 20,000 cycles of suspend/resume.  All
 machines were running build 581, w. OFW q2c28.

 This may be related to a similar problem reported in ticket #3738

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Ticket URL: <https://dev.laptop.org/ticket/4131>
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