#2362 HIGH Trial-2: xo locks at startupt: EC port 6c output buffer timeout

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#2362: xo locks at startupt: EC port 6c output buffer timeout
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  Reporter:  tomeu                |       Owner:  rsmith 
      Type:  defect               |      Status:  new    
  Priority:  high                 |   Milestone:  Trial-2
 Component:  embedded controller  |     Version:         
Resolution:                       |    Keywords:         
  Verified:  0                    |  
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Changes (by rsmith):

 * cc: David.Lin (added)
  * owner:  David.Lin => rsmith

Comment:

 Replying to [comment:3 jg]:

 The 6c EC timeouts are under investigation.  The core of the problem is
 that sometimes the OBF flag is not cleared.  EC debug logs indicate that
 the code path that clears this flag is followed and the flag only ends up
 uncleared intermittently.  So I suspect there is some EC quirk about
 clearing these flags thats not yet understood.

 The next release of OFW and newer kernels will not treat this as a fatal
 error and will retry the command.  Re-trying will reset the flag state and
 the command will probably succeed on the next try.

 Re-assiging to me since I re-wrote the EC 6c protocol code to support our
 new protocol.

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Ticket URL: <http://dev.laptop.org/ticket/2362#comment:4>
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