Bug#970679: ath10k and kernel >= 5.6

Hi,

I saw the bug that you reported in Debian wireless-regdb: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970679 .

I am aware of a regression in kernel 5.6 (not yet fixed as of 5.9) which produces the exact symptom you described - impossibility to use AP mode on any 5GHz channel, due to country/regulatory issues.

However the wireless-regdb package is not directly involved in the issue I'm talking about (as I understand it), so rebooting into a 4.x series kernel should immediately fix it (at least, on my Turris Omnia, it does).

Therefore it might or might not be your same issue.

A non-exhaustive list of references:

https://patchwork.kernel.org/project/ath10k/patch/20200527165718.129307-1-briannorris@chromium.org/

https://www.mail-archive.com/ath10k@lists.infradead.org/msg12598.html

https://bbs.archlinux.org/viewtopic.php?id=254535

Culprit commit: https://github.com/torvalds/linux/commit/2dc016599cfa9672a147528ca26d70c3654a5423

I'm just trying to spare you the many many hours of debugging that I spent before finding that out :)

Best regards,

Massimo Maggi