[FS#800] ath9k sta and ap mode change. system hang

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - 李鹏 (lipeng) 

Attached to Project - LEDE Project
Summary - ath9k sta  and ap mode  change. system hang
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Critical
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - mips device with ar9580 wireless card sta and ap mode change by use test.sh
test.sh  
while [ 1 ]
do
mv /etc/config/wireless /etc/config/wirelessbak
mv /etc/config/wireless1 /etc/config/wireless
mv /etc/config/wirelessbak /etc/config/wireless1
/etc/init.d/network restart
sleep 50
done

I found the system will  hang , It like  a deadlock but I can't verify


Use the same  shell I change the ath9k code

just delete the full sleep timer

modify ath9k_ps_wakeup  ath9k_ps_restore 
delete  mod_timer(&sc->sc_pm_lock,flags);
detete  del_timer_sync(&sc->sc_pm_lock);
The system run ok
   

 

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=800