linux-kernel - Re: PWM regression causing failures with the pwm-atmel driver

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Message-ID: <a2ed99b3-ee2a-6393-de98-3305c57dacc4@axentia.se>
Date:   Tue, 23 May 2023 22:42:34 +0200
From:   Peter Rosin <peda@...ntia.se>
To:     Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-pwm@...r.kernel.org,
        Thorsten Leemhuis <regressions@...mhuis.info>,
        Thierry Reding <thierry.reding@...il.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>
Subject: Re: PWM regression causing failures with the pwm-atmel driver

2023-05-23 at 01:34, Peter Rosin wrote:
> So, I took a step back and can only conclude that there must be some
> another regression to find, and I was confused by that other regression.
> In short, I was on 6.1.<foo> and everything was fine, and then I bumped
> to 6.3 and a process crashed. I went to 6.2 and that same process also
> crashed. I then totally focused on v6.1..v6.2 to figure out the problem.
> I simply assumed v6.3 had the same problem because the symptom from
> 30.000ft was the same (that process died). I failed to go back to v6.3
> to confirm that it was indeed the same problem as I had found in the
> v6.1..v6.2 range.
> 
> My bad, it seems I have another day of bisections lined up.

For closure, I ended up with this:
https://lore.kernel.org/lkml/221d19e2-6b92-7f38-7d8a-a730f54c33ea@axentia.se/

I.e. another v6.1..v6.2 regression that caused sound failures.
The two problems looked very similar to the suffering application.

Anyway, sorry again for the noise.

Cheers,
Peter