#10694 NORM 11.3.0: After XO-1 sleep, there is a 3-4min delay before wireless access points appear

[Zarro Boogs per Child]

#10694: After XO-1 sleep, there is a 3-4min delay before wireless access points
appear
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           Reporter:  erikos           |       Owner:  dsd                              
               Type:  defect           |      Status:  new                              
           Priority:  normal           |   Milestone:  11.3.0                           
          Component:  network manager  |     Version:  Development build as of this date
         Resolution:                   |    Keywords:                                   
        Next_action:  diagnose         |    Verified:  0                                
Deployment_affected:                   |   Blockedby:                                   
           Blocking:                   |  
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Comment(by dsd):

 In the upstream kernel, this is already working well. There are some
 corner-cases not handled well in the cases of starting a scan and then
 immediately starting association, but this bug is not present and the use
 of nl80211 avoids the odd behaviour described above anyway. I'll work to
 make this work perfectly upstream.

 For olpc-2.6.35, this is hard to fix. I'm attaching my attempt of making
 association defer itself until ongoing scans have finished. The problem is
 that association is inherently scanning too, and the get_scan handler
 won't send any results to userspace while a scan (or an association) is
 ongoing. Userspace gives up waiting for the scan results. This is fixed
 upstream thanks to cfg80211 which has a nicer separation of these
 concepts. It would be a lot of effort to fix this in 2.6.35, so I think
 I'll probably push it off to a later cycle (where we'll have a new
 kernel).

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Ticket URL: <http://dev.laptop.org/ticket/10694#comment:4>
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