#1554 BLOC Untriag: dcon timeout on B3 resume

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#1554: dcon timeout on B3 resume
----------------------+-----------------------------------------------------
 Reporter:  dilinger  |       Owner:  dilinger 
     Type:  defect    |      Status:  new      
 Priority:  blocker   |   Milestone:  Untriaged
Component:  kernel    |     Version:           
 Keywords:            |    Verified:  0        
----------------------+-----------------------------------------------------
 On a B3 that Dave brought back from Quanta, we see the following problem
 during resume:
 {{{
 [  107.834795] Stopping tasks ... done.
 [  107.839189] Suspending console(s)
 +r[  107.884279] olpc_do_sleep!
 [    0.132119] gamebutton data: 0 down
 [    0.200596] OLPC PCI: Config write to devfn 7b reg d value 40
 [    1.250464] olpc-dcon:  Timeout entering CPU mode
 [    1.268457] Restarting tasks ... done.
 }}}

 The DCON source switch error is then reproducible:
 {{{
 -bash-3.1# echo 1 > /sys/devices/platform/dcon/source
  [  520.965802] olpc-dcon:  Timeout entering CPU mode
 }}}

 Prior to suspend, manually switching the DCON source mode does not time
 out.  OFW also suspends/resumes just fine, without any DCON problems.

 This is with OFW Q2C13 and kernel-2.6.21-20070521.1.olpc.f2e17ac2cb98ab3.

-- 
Ticket URL: <http://dev.laptop.org/ticket/1554>
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