linux-kernel - Re: Fwd: After kernel 6.3.7 or 6.3.8 b43 driver fails

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Message-Id: <e0a08449-554a-4a28-ac50-7051866eb95e@app.fastmail.com>
Date:   Sun, 25 Jun 2023 20:12:22 +0200
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Sardonimous ." <sardonimous@...mail.com>,
        "Larry Finger" <Larry.Finger@...inger.net>,
        "Bagas Sanjaya" <bagasdotme@...il.com>,
        "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
        "Linux Regressions" <regressions@...ts.linux.dev>,
        "Linux Wireless" <linux-wireless@...r.kernel.org>,
        Netdev <netdev@...r.kernel.org>
Cc:     Michael Büsch <m@...s.ch>,
        "kernel test robot" <lkp@...el.com>,
        "Simon Horman" <simon.horman@...igine.com>,
        "Kalle Valo" <kvalo@...nel.org>
Subject: Re: Fwd: After kernel 6.3.7 or 6.3.8 b43 driver fails

On Sun, Jun 25, 2023, at 18:58, Sardonimous wrote:
> I have been unable to get DMA to work in the past.  So I have been 
> configuring it with PIO=1 (/etc/modprobe,d/b43.conf):
>
>      options b43 pio=1 qos=0
>

I think the qos=0 parameter is what causes the WARN_ON(), as that
causes the use of only one queue, while the warning happens when
tx function iterates over all the queues and warns that they don't
exist.

     Arnd