#11041 NORM 1.75-fi: XO-1.75 A3 #4 accelerometer may hang

[Zarro Boogs per Child]

#11041: XO-1.75 A3 #4 accelerometer may hang
--------------------------+-------------------------------------------------
 Reporter:  Quozl         |                 Owner:               
     Type:  defect        |                Status:  new          
 Priority:  normal        |             Milestone:  1.75-firmware
Component:  not assigned  |               Version:  not specified
 Keywords:                |           Next_action:  never set    
 Verified:  0             |   Deployment_affected:               
Blockedby:                |              Blocking:               
--------------------------+-------------------------------------------------
 Sometimes the accelerometer may hang.  The triggering conditions have not
 been determined.

 When it hangs, an open of the device stalls the process in D state and
 several lines appear in dmesg:
 {{{
 i2c i2c-5: i2c_pxa: timeout waiting for bus free
 }}}

 which are followed by one line of
 {{{
 lis3: power on failure
 }}}

 and the cycle repeats.

 The symptom was cleared by removing power and main battery from the
 laptop.

 (The power on failure message is from lis3_i2c_init.  The device is
 connected directly to the SoC, so only the device should be responsible
 for bus not free.)

 os19 runin-accelerometer

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Ticket URL: <http://dev.laptop.org/ticket/11041>
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