linux-kernel - Re: [PATCH v1] soc/tegra: regulators: Fix locking up when voltage-spread is out of range

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Message-ID: <YFyYY00uNyfrq6UW@orome.fritz.box>
Date:   Thu, 25 Mar 2021 15:04:19 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Jonathan Hunter <jonathanh@...dia.com>,
        Peter Geis <pgwipeout@...il.com>,
        Matt Merhar <mattmerhar@...tonmail.com>,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] soc/tegra: regulators: Fix locking up when
 voltage-spread is out of range

On Tue, Mar 02, 2021 at 04:18:00PM +0300, Dmitry Osipenko wrote:
> Fix voltage coupler lockup which happens when voltage-spread is out
> of range due to a bug in the code. The max-spread requirement shall be
> accounted when CPU regulator doesn't have consumers. This problem is
> observed on Tegra30 Ouya game console once system-wide DVFS is enabled
> in a device-tree.
> 
> Fixes: 783807436f36 ("soc/tegra: regulators: Add regulators coupler for Tegra30")
> Cc: stable@...r.kernel.org
> Reported-by: Peter Geis <pgwipeout@...il.com>
> Tested-by: Peter Geis <pgwipeout@...il.com> # Ouya T30
> Tested-by: Matt Merhar <mattmerhar@...tonmail.com> # Ouya T30
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/soc/tegra/regulators-tegra30.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.

Thierry

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