Ryan Hsu <[email protected]> writes:

> On 01/08/2018 03:28 AM, Rouven Czerwinski wrote:
>
>> Hello,
>>
>> I just experienced a firmware crash:
>> [Mo Jan  8 12:15:44 2018] ath10k_pci 0000:01:00.0: firmware crashed! (guid 
>> 07b97ee6-5eb2-4196-b038-e3cad581c735)
>> [Mo Jan  8 12:15:44 2018] ath10k_pci 0000:01:00.0: qca6174 hw3.2 target 
>> 0x05030000 chip_id 0x00340aff sub 1a56:1535
>> [Mo Jan  8 12:15:44 2018] ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 1 
>> tracing 0 dfs 0 testmode 0
>> [Mo Jan  8 12:15:44 2018] ath10k_pci 0000:01:00.0: firmware ver 
>> WLAN.RM.4.4.1-00051-QCARMSWP-1 api 6 features wowlan,ignore-otp crc32 
>> c3fd4411
>> [Mo Jan  8 12:15:44 2018] ath10k_pci 0000:01:00.0: board_file api 2 bmi_id 
>> N/A crc32 0e26ef70
>> [Mo Jan  8 12:15:44 2018] ath10k_pci 0000:01:00.0: htt-ver 3.44 wmi-op 4 
>> htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
>>
>> Complete dmesg attached.
>>
>> Is this issue fixed in newer firmware versions?
>
> It seems the failure is due to the BANDWIDTH information mismatch in firmware
> when the initial connection is made with narrower PHYMODE and BANDWIDTH and
> then AP changed that later.
>
> I've seen similar issue earlier but I can't reproduce at my setup.
>
> I've sent out a patch to address that, to reconfigure the PHYMODE while
> changing the BANDWIDTH.
>
> Can you help to give it test to see if that helps at your end?

Sure, the failure was pretty reliable on my universities wireless
network. I'll apply and report back, thanks!

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