#11529 HIGH 1.75-so: EC SSP reports TX underrun with 11.3.1 os18 runin

[Zarro Boogs per Child]

#11529: EC SSP reports TX underrun with 11.3.1 os18 runin
-----------------------+----------------------------------------------------
 Reporter:  greenfeld  |                 Owner:                                   
     Type:  defect     |                Status:  new                              
 Priority:  high       |             Milestone:  1.75-software                    
Component:  kernel     |               Version:  Development build as of this date
 Keywords:             |           Next_action:  diagnose                         
 Verified:  0          |   Deployment_affected:                                   
Blockedby:             |              Blocking:                                   
-----------------------+----------------------------------------------------
 A SKU202 1.75 (#0 locally) running runin for about 19 hours ran into an EC
 error during a resume cycle, and started doing an infinite loop of kernel
 messages complaining it couldn't talk to the battery anymore.

 {{{
 [55461.427322] PM: suspend of devices complete after 280.909 msecs
 [55461.427642] PM: late suspend of devices complete after 0.296 msecs
 [55461.429125] PM: early resume of devices complete after 0.444 msecs
 [55461.429125] olpc-ec-1.75: SSP reports TX underrun
 [55461.429165] olpc-ec-1.75: SWITCH packet received but no command pending
 [55461.429253] mmp2_pm_finish
 [55461.437275] power_supply olpc-battery: driver failed to report
 `charge_now' property
 [55461.687140] [galcore]: gpu_resume, 1369
 [55461.687593] >>>>>>[_gpu_on]@1153
 [55461.697143] <<<<<<[_gpu_on]@1173
 [55461.737144] usb 1-1: reset high speed USB device number 2 using pxau2o-
 ehci
 [55462.017867] dcon_source_switch to CPU
 [55462.018490] PM: resume of devices complete after 589.124 msecs
 [55462.126660] olpc-dcon: The CPU has control
 [55462.130743] Restarting tasks ...
 [55462.138755] power_supply olpc-battery: driver failed to report `status'
 property
 [55462.180576] power_supply olpc-battery: driver failed to report
 `manufacturer' property
 [55462.197269] power_supply olpc-battery: driver failed to report
 `capacity' property
 [55462.221192] power_supply olpc-battery: driver failed to report
 `manufacturer' property
 [55462.229807] done.
 [55462.246754] power_supply olpc-battery: driver failed to report
 `capacity' property
 [55462.257538] power_supply olpc-battery: driver failed to report
 `manufacturer' property
 }}}

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Ticket URL: <http://dev.laptop.org/ticket/11529>
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