Date: Tue, 23 Jan 2018 14:20:16 +0100
From: Stanislaw Gruszka <sgruszka@redhat.com>
To: Tom Psyborg <pozega.tomislav@gmail.com>
Cc: Enrico Mioso <mrkiko.rs@gmail.com>,
        linux-wireless <linux-wireless@vger.kernel.org>,
        Johannes Berg <johannes.berg@intel.com>,
        Daniel Golle <daniel@makrotopia.org>,
        Arnd Bergmann <arnd@arndb.de>, John Crispin <john@phrozen.org>,
        Felix Fietkau <nbd@nbd.name>
Subject: Re: ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Dropping
 frame due to full tx queue...?
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On Thu, Jan 11, 2018 at 05:00:14PM +0100, Tom Psyborg wrote:
> does not help as expected. there was even a crash:

You mean the kernel hangs ? There is a WARNING at the end of the logs
but it's from ath9k not from rt2800. 

> [   92.559018] ieee80211 phy1: rt2800mmio_txstatus_is_spurious: Warning - 4
> spurious TX_FIFO_STATUS interrupt(s)

This is suspicious, we should not get spurious interrupts. Perhaps there
is something wrong on platform lever, maybe with pinmux ? 

> for an empty queue 2, dropping
> [  176.019555] ieee80211 phy1: rt2x00lib_rxdone_read_signal: Warning -
> Frame received with unrecognized signal, mode=0x0001, signal=0x010f, type=4
> [  176.025456] ieee80211 phy1: rt2x00lib_rxdone_read_signal: Warning -

and this indicate that HW/FW do not provide correct frames to 
the driver any longer.

Again - I think we do something that make device no longer possible to
function normally. Changing queue stop/start thresholds will not help
with that.

Cheers
Stanislaw