WL1807MOD: ​ ERROR SW watchdog interrupt

Hi,

I am sorry if this is a repeated question.
In our customer's application when wlan0 is enabled WL18xxMOD gets SW watchdog interrupt.
"ERROR SW watchdog interrupt received! starting recovery"
I am attaching the log file here.QA_WL18xx.xlsx
 
After this error the modules won't work until it is reset forcefully.
We would like to know what could be the possible reason for a SW watchdog interrupt.

We are using very old kernel(below)
Kernel:2.6.38.8
DriverVersion:ol_r8.a6.02
FirmwareVersion:FRev 8.2.0.0.107
FRev 8.2.999.0.135

Currently we are trying to update to the possible latest driver version according to the
below wiki page, but we are not able to port successfully yet.
http://processors.wiki.ti.com/index.php/WL18xx_Driver_Debug#Acquire_WL18xx_driver_and_firmware_version

Please let me know if there is any suggestions looking into the LOG file.

Thanks for the help,

Best Regards
Paddu