#12779 NORM Future : XO-4 custom build hangs SD bus for mmc0 on resume

[Zarro Boogs per Child]

#12779: XO-4 custom build hangs SD bus for mmc0 on resume
--------------------------------+-------------------------------------------
           Reporter:  Quozl     |       Owner:  Quozl                            
               Type:  defect    |      Status:  assigned                         
           Priority:  normal    |   Milestone:  Future Release                   
          Component:  kernel    |     Version:  Development build as of this date
         Resolution:            |    Keywords:                                   
        Next_action:  diagnose  |    Verified:  0                                
Deployment_affected:  au        |   Blockedby:                                   
           Blocking:            |  
--------------------------------+-------------------------------------------

Comment(by Quozl):

 * all 24 instances of the problem use the ARM ''wfi'' instruction and were
 not "suspend avoided", per pm-mmp3.c,
  * in a test removing icmp from iptables netactivity target, and sending
 10 Hz pings of 1400 bytes in order to provoke short wakes, a unit reported
 "mwifiex_sdio_host_to_card: no wr_port available" and continued to reissue
 the "Wireless Key Required" dialog; solved by sleep and wake using power
 button.

-- 
Ticket URL: <http://dev.laptop.org/ticket/12779#comment:14>
One Laptop per Child <http://laptop.org/>
One Laptop per Child bug tracking system