ath10k: Firmware crash after removing VAP

[Michal Kazior]

Hi Ben,

On 17 July 2013 23:20, Ben Greear <greearb at candelatech.com> wrote:
> I had vap1 on an ath10k NIC, and wlan2 also existed.  I deleted
> the vap1, and very shortly afterwords, the firmware crashed:
>
> ath10k: firmware crashed!
> ath10k: hardware name qca988x hw2.0 version 0x4100016c
> ath10k: firmware version: 1.0.0.636
> ath10k: target register Dump Location: 0x00401930
> ath10k: target Register Dump
> ath10k: [00]: 0x4100016C 0x00000000 0x0098EEF0 0x00000000
> ath10k: [04]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [08]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [12]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [16]: 0x00000000 0x00000000 0x00000000 0x0098EEF0
> ath10k: [20]: 0x00000000 0x00401930 0x00000000 0x00000000
> ath10k: [24]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [28]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [32]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [36]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [40]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [44]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [48]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [52]: 0x00000000 0x00000000 0x00000000 0x00000000
> ath10k: [56]: 0x00000000 0x00000000 0x00000000 0x00000000

This dump looks suspicious. Are you using vanilla kernel or do you
have a ath regulatory hack patch from OpenWRT applied? If so the
channel scan list is not sent to the firmware and this will cause
firmware to crash.


> Kernel is 3.11.0-rc1+
>
>
> Is there any way short of reboot to recover from firmware
> crash currently?

I've posted some patches recently and are currently under review. You
can try applying them yourself and test it.

http://lists.infradead.org/pipermail/ath10k/2013-July/000023.html
http://lists.infradead.org/pipermail/ath10k/2013-July/000035.html


Pozdrawiam / Best regards,
Michał Kazior.