On Tue, Dec 25, 2018 at 11:43:09PM +0100, Tom Psyborg wrote:
> Even with your patches that are currently being tested i had interface
> frozen yesterday. 2 android pads, 2 android phones and laptop with
> intel card on win10. Wlan frozen about half an hour after bootup, had
> to restart interface that revelaed more queue problems:
>
> [  238.715836] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
> [  238.722681] br-lan: port 2(wlan1) entered blocking state
> [  238.728107] br-lan: port 2(wlan1) entered forwarding state
> [ 2403.051342] device wlan1 left promiscuous mode
> [ 2403.056021] br-lan: port 2(wlan1) entered disabled state
> [ 2403.213039] ieee80211 phy1: rt2800_config_channel: Warning - Using
> incomplete support for external PA

Yes, patches will not help if device is not programed properly,
i.e. when external PA is not well configured. I already pointed
this here:
https://lore.kernel.org/linux-wireless/20180815114029.GA1862@redhat.com/

Register programming should be fixed there and also whould be good
to implement watchdog to recover from wifi hung it it happens.

> [ 2403.522622] ieee80211 phy1: rt2x00queue_flush_queue: Warning -
> Queue 0 failed to flush
> [ 2403.817143] ieee80211 phy1: rt2x00queue_flush_queue: Warning -
> Queue 1 failed to flush
> [ 2404.058047] ieee80211 phy1: rt2x00queue_flush_queue: Warning -
> Queue 2 failed to flush
> [ 2404.299509] ieee80211 phy1: rt2x00queue_flush_queue: Warning -
> Queue 3 failed to flush
> [ 2404.566195] ieee80211 phy1: rt2x00queue_flush_queue: Warning -
> Queue 0 failed to flush
> [ 2404.806880] ieee80211 phy1: rt2x00queue_flush_queue: Warning -
> Queue 1 failed to flush
> [ 2405.047624] ieee80211 phy1: rt2x00queue_flush_queue: Warning -
> Queue 2 failed to flush
> [ 2405.288195] ieee80211 phy1: rt2x00queue_flush_queue: Warning -
> Queue 3 failed to flush

Hmm, this one should be gone. Could you check attached patch?

Thanks
Stanislaw