#11736 NORM Not Tri: Can't boot from external SD card since 39fc327: mmcblk0: error -84 transferring data

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#11736: Can't boot from external SD card since 39fc327: mmcblk0: error -84
transferring data
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           Reporter:  sascha_silbe  |       Owner:                                    
               Type:  defect        |      Status:  new                               
           Priority:  normal        |   Milestone:  Not Triaged                       
          Component:  kernel        |     Version:  Development source as of this date
         Resolution:                |    Keywords:                                    
        Next_action:  never set     |    Verified:  0                                 
Deployment_affected:                |   Blockedby:                                    
           Blocking:                |  
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Comment(by sascha_silbe):

 After reverting 39fc327 the system booted fine three out of four times.
 The failure mode encountered was the second one (initialisation failure)
 from the description.

 Kernel output for successful boots:

  1.
 {{{
 [  663.282799] sdhci: Switching to 1.8V signalling voltage failed,
 retrying with S18R set to 0
 [  663.291514] mmc0: error -110 whilst initialising SD card
 [...]
 [  663.481358] mmc0: new SDHC card at address e624
 [...]
 [  663.502455] mmcblk0: mmc0:e624 SD32G 29.7 GiB
 [...]
 [  663.518789]  mmcblk0: p1 p2 p3
 }}}
  1.
 {{{
 [  663.300437] mmc0: error -84 whilst initialising SD card
 [...]
 [  663.511273] mmc0: new SDHC card at address e624
 [  663.522538] mmcblk0: mmc0:e624 SD32G 29.7 GiB
 [  663.540466]  mmcblk0: p1 p2 p3
 }}}
  1.
 {{{
 [  663.300432] mmc0: error -84 whilst initialising SD card
 [...]
 [  663.510961] mmc0: new SDHC card at address e624
 [  663.525372] mmcblk0: mmc0:e624 SD32G 29.7 GiB
 [  663.543500]  mmcblk0: p1 p2 p3
 }}}

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Ticket URL: <http://dev.laptop.org/ticket/11736#comment:2>
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