linux-kernel - Re: [PATCH v4 00/11] ASoC: fsl_ssi: Clean up

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Date:   Mon, 18 Dec 2017 15:02:21 -0800
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     Caleb Crome <caleb@...me.org>, Mark Brown <broonie@...nel.org>
Cc:     Timur Tabi <timur@...i.org>, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, alsa-devel@...a-project.org,
        Liam Girdwood <lgirdwood@...il.com>,
        Fabio Estevam <fabio.estevam@....com>,
        mail@...iej.szmigiero.name,
        Arnaud Mouiche <arnaud.mouiche@...oxia.com>, lukma@...x.de,
        Sascha Hauer <kernel@...gutronix.de>
Subject: Re: [PATCH v4 00/11] ASoC: fsl_ssi: Clean up - coding style level

On Mon, Dec 18, 2017 at 02:19:08PM -0800, Caleb Crome wrote:

> > Acked-by: Timur Tabi <timur@...i.org>

--- To Mark ---

Mark, can you still take these changes first? Since this failed
test that Caleb reported here is already existing on the top of
the mainline tree, I would like to treat this mail as a separate
bug report and fix it with a separate patch.

Besides, this series of changes don't change any function flow.

Thank you


--- To Caleb ---

> I'm re-setting up my loopback test to try to verify these most recent changes.

I really appreciate your verification and help.

> warn:   11a0 11a1 1160 11a3 11a4 11a5 11a6 11a7
> warn: Valid frame after 1 invalid frames
> warn:   11c0 11c1 11c2 11c3 11c4 11c5 11c6 11c7
> warn: first invalid frame while expecting frame 0x00a0
> warn:   13e7 1400 1401 1402 1403 1404 1405 1404
> warn:   1407 1420 1421 1422 1423 1424 1425 1426
> warn:   1427 1440 1441 1442 1443 1444 1445 1484
> warn:   1447 1460 1461 1462 1463 1464 1465 1466
> 
> Those last 4 lines are the channel slips -- the least significant
> nibble should be the channel number:  i.e. should go 0, 1, 2, 3, 4, 5,
> 6, 7.
> 
> Ugh, so it's basically quite broken again -- before these patches.

I remember Arnaud reviewed one of my changes back to September.
So I suppose the test should be fine at that time -- so a change
being merged recently might have impacted the test result.

> I guess I need to go backwards in time and see what rev re-broke it.
> I don't really have time to dig too deep on this again.
> 
> I'd be happy to provide the hardware to anybody that can diagnose and
> debug this more quickly than I can.  I'm very inefficient at kernel
> drivers I think.   My day job is acoustical and electrical
> engineering.
> 
> Here's what the hardware looks like for anybody that's interested.
> Just a single wire loopback on the wandboard header.

I would definitely like to take the hardware to debug it as long
as you are willing to provide me. Can you send me a private mail
to discuss about it?

Thanks
Nicolin