linux-kernel - Re: rsi_91x: Failed to read status register on failed authentication

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Date:   Wed, 6 Dec 2017 12:43:36 +0530
From:   Amitkumar Karwar <amitkarwar@...il.com>
To:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>
Cc:     "amit.karwar@...pinesignals.com" <amit.karwar@...pinesignals.com>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>
Subject: Re: rsi_91x: Failed to read status register on failed authentication

On Tue, Dec 5, 2017 at 9:41 PM, Alexey Brodkin
<Alexey.Brodkin@...opsys.com> wrote:
> Hi Amit,
>
> I'm seeing quite a strange behavior of RedPine module.
> It connects perfectly fine to one of access points but fails
> to connect to another.
>
> Moreover after that failure RSI driver starts to flood me with
> messages saying:
> --------------------->8--------------------
> rsi_91x: rsi_sdio_check_buffer_status: Failed to read status register
> --------------------->8--------------------
>
> Below you may find details of my 2 experiments.
> Note I use vanilla Linux kernel v4.14.4
>
> Any ideas what could be wrong?
>

Could you enable driver debug zones and share dmesg log for analysis?

echo 0xffffffff > /sys/kernel/debug/phy0/debug_zone

Regards,
Amitkumar