#2621 BLOC Trial-3: wireless suspend/resume failure under high-traffic

[Zarro Boogs per Child]

#2621: wireless suspend/resume failure under high-traffic
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  Reporter:  marcelo   |       Owner:  rchokshi
      Type:  defect    |      Status:  new     
  Priority:  blocker   |   Milestone:  Trial-3 
 Component:  wireless  |     Version:          
Resolution:            |    Keywords:  power   
  Verified:  0         |  
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Comment (by jcardona):

 Replying to [comment:16 cjb]:

 > The idea was to cause the crash, and then see what happens differently
 on the bus
 > when cerr is zero; i.e. the command is retried infinitely.

 We now know that after the failure, EP2 is disabled.  The !XactErr is
 probably the consequence of the endpoint being disabled, and not the cause
 (see question 2 in [http://dev.laptop.org/ticket/2621#comment:13 my
 previous comment]). My guess is that with CERR=0, we'll just see token
 packets from the host and no handshake packets from the device on endpoint
 2.  We need to answer the following question:

 '''Under which conditions the device disables EP2?'''

 So far we just know that it is the USB controller in the device side that
 is disabling the endpoint and not the firmware.  That may be a response to
 certain events on the bus.  Captures that show the moment in which the
 device stops responding to token packets on endpoint 2 could give us a
 hint.

-- 
Ticket URL: <http://dev.laptop.org/ticket/2621#comment:17>
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