#7922 NORM 8.2.0 (: hang on suspend when USB-ethernet is connected

[Zarro Boogs per Child]

#7922: hang on suspend when USB-ethernet is connected
----------------------------+-----------------------------------------------
 Reporter:  dsd             |         Owner:  dsaxena             
     Type:  defect          |        Status:  new                 
 Priority:  normal          |     Milestone:  8.2.0 (was Update.2)
Component:  kernel          |       Version:  not specified       
 Keywords:  joyride-2281:-  |   Next_action:  never set           
 Verified:  0               |     Blockedby:                      
 Blocking:                  |  
----------------------------+-----------------------------------------------
 I'm running an XO with joyride 2281 and a USB ethernet adapter plugged in.
 When I hit the power button to suspend it, the system crashes somewhere in
 the suspend routine, before the power light goes out.

 Here are the final log messages from serial console:

 {{{
 [  830.949080] olpc-ec:  received 0x92
 [  830.949186] olpc-ec:  running cmd 0x1b
 [  830.958978] olpc-ec:  sending cmd arg 0x90
 [  830.959847] PM: Syncing filesystems ... done.
 [  830.965290] PM: Preparing system for mem sleep
 [  830.969358] Freezing user space processes ... (elapsed 0.00 seconds)
 done.
 [  830.984952] Freezing remaining freezable tasks ... (elapsed 0.00
 seconds) done.
 [  830.992611] PM: Entering mem sleep
 [  830.996022] Suspending console(s)
 }}}

 Power to the usb ethernet adapter remains in place - the blinky lights
 continue to blink even at the point when the system has hung.

 Unsurprisingly it is not possible to resume the system.

 This is reproducible every time, and seems to suspend fine without the
 usb-ethernet adapter connected. It's one of the XO-branded USB ethernet
 adapters floating around the office (uses the asix driver).

-- 
Ticket URL: <http://dev.laptop.org/ticket/7922>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system