#12258 NORM 13.1.0: XO-4 runin audio hang on clk_mmp_disable_audio

Zarro Boogs per Child bugtracker at laptop.org
Tue Oct 30 14:02:01 EDT 2012


#12258: XO-4 runin audio hang on clk_mmp_disable_audio
-----------------------+----------------------------------------------------
 Reporter:  greenfeld  |                 Owner:                                   
     Type:  defect     |                Status:  new                              
 Priority:  normal     |             Milestone:  13.1.0                           
Component:  kernel     |               Version:  Development build as of this date
 Keywords:             |           Next_action:  diagnose                         
 Verified:  0          |   Deployment_affected:                                   
Blockedby:             |              Blocking:                                   
-----------------------+----------------------------------------------------
 While running the (updated) runin 0.20.12 on XO-4 with 13.1.0 os8, I
 spotted that the camera output on the display was working but everything
 else seemed to be hung.  Hung items included the MMC test (no access
 flashing), GTK status output, and serial console shell.

 SysRq still worked and when used to view the blocked tasks, "unstuck" the
 system (or held lock) and suddenly everything else in runin started
 updating and running again.

 The last lines seen before the system hung were:

 {{{
 [52918.753269] ^^^ trigger
 [52918.860162] calling clk_mmp_disable_audio
 [53266.925771] calling clk_mmp_enable_audio
 [53266.991146] Enter mmp pcm open
 [53267.043877] ^^^ startup
 [53267.085544] ^^^ mute
 [53267.100192] calling clk_mmp_disable_audio
 [53688.082184] calling clk_mmp_enable_audio
 [53688.086598] Enter mmp pcm open
 [53688.089647] ^^^ startup
 [53689.542218] Enter olpc hw params
 [53689.545681] Exit olpc hw params
 [53689.548830] Early enable of receive
 [53689.749549] ^^^ prepare
 [53689.753007] ^^^ prepare capture
 [53689.800215] ^^^ unmute
 [53689.892732] ^^^ trigger
 [53689.895211] ^^^ trigger
 [53689.976268] calling clk_mmp_disable_audio
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/12258>
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