#12569 NORM Not Tri: mwifiex/8787 non-functional on resume after powered suspend, with "mwifiex_sdio mmc0:0001:1: GET_CMD_NODE: cmd node not available" kernel error message

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#12569: mwifiex/8787 non-functional on resume after powered suspend, with
"mwifiex_sdio mmc0:0001:1: GET_CMD_NODE: cmd node not available" kernel
error message
--------------------+-------------------------------------------------------
 Reporter:  shep    |                 Owner:  shep                              
     Type:  defect  |                Status:  new                               
 Priority:  normal  |             Milestone:  Not Triaged                       
Component:  kernel  |               Version:  Development source as of this date
 Keywords:          |           Next_action:  never set                         
 Verified:  0       |   Deployment_affected:                                    
Blockedby:          |              Blocking:                                    
--------------------+-------------------------------------------------------
 While testing mwifiex/8787 suspend resume with wake-on-lan wakeups over
 the last couple of days (using kernel
 a92e022840e7e044fc9a45003f0772314a308191 ), I have twice had the
 mwifiex/8787 wireless interface fail to work after the resume (and
 continue to fail to work after subsequent resumes), with the following
 error messages appearing on the console on resume:

 {{{
 [ 1716.275081] mwifiex_sdio mmc0:0001:1: GET_CMD_NODE: cmd node not
 available
 [ 1716.275087] mwifiex_sdio mmc0:0001:1: PREP_CMD: no free cmd node
 }}}

 I did manage to recover use of the wireless interface after one such
 failure by stopping my suspend loop and forcing an unpowered suspend with:

 {{{
 bash-4.2# echo 1 | tee
 /sys/module/mwifiex_sdio/parameters/mwifiex_always_poweroff_on_sleep
 bash-4.2# rtcwake -m mem -s 5
 bash-4.2# echo 0 | tee
 /sys/module/mwifiex_sdio/parameters/mwifiex_always_poweroff_on_sleep
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/12569>
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