#1655 NORM BTest-4: Battery capacity show 0% in sugar by BIOS: Q2C15

[Zarro Boogs per Child]

#1655: Battery capacity show 0% in sugar by BIOS: Q2C15
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  Reporter:  chiaying.lin  |       Owner:  dilinger
      Type:  defect        |      Status:  new     
  Priority:  normal        |   Milestone:  BTest-4 
 Component:  kernel        |     Version:          
Resolution:                |    Keywords:          
  Verified:  0             |  
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Comment (by rsmith):

 Replying to [comment:3 Bryan.Ma]:
 > It could be caused by the newly EC command protocol included in
 Q2C15,[[BR]]
 >
 > let's wait the kernel modification.

 The new EC 6c/68 protocol ignores the locking bit 7 of port 6c.  The new
 protocol does not require a locking scheme to be used.  The kernel will do
 its own locking to prevent multiple threads from accessing the EC at the
 same time.

 The kernel in current builds fails to read the the BMS info because the
 lock bit is set.

 The solution is to use the new kernel that uses the new EC protocol.

-- 
Ticket URL: <http://dev.laptop.org/ticket/1655#comment:4>
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