Wireless instability on ath10k radios after upgrade to 21.02.1

[hnyman]

@flyguy62n

for the WRT3200ACM, it's a Marvell radio I think. It might not be directly related, but it could also point to a common problem.

For WRT3200ACM with 21.02.1 it is likely at least this bug causing various trouble... (already fixed in 21.02 branch, but not in the old 21.02.1 release)

Users needed to test Wi-Fi stability on Linksys WRT3200ACM & WRT32X on OpenWrt 21.02

Update in November 2021: The issue is finally fixed on upstream and OpenWrt master & 21.02 branches! The forthcoming OpenWrt 21.02.2 release includes the fix by @nbd. Huge thanks to @adworacz & @WildByDesign for spending weeks testing and pinpointing the issue to the 5.8 backports. Get the OpenWrt 21.02.2 images which include the fix: WRT3200ACM WRT32X Get the OpenWrt master snapshot images which include the fix: WRT3200ACM WRT32X Information About the Issue I use Linksys WRT32X…