linux-kernel - Re: [PATCH v5 1/8] i2c: tegra: Fix suspending in active runtime PM state

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Message-ID: <20200115173358.GD1239@ninjato>
Date:   Wed, 15 Jan 2020 18:33:58 +0100
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Mikko Perttunen <cyndis@...si.fi>, linux-i2c@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 1/8] i2c: tegra: Fix suspending in active runtime PM
 state

On Tue, Jan 14, 2020 at 04:34:35AM +0300, Dmitry Osipenko wrote:
> I noticed that sometime I2C clock is kept enabled during suspend-resume.
> This happens because runtime PM defers dynamic suspension and thus it may
> happen that runtime PM is in active state when system enters into suspend.
> In particular I2C controller that is used for CPU's DVFS is often kept ON
> during suspend because CPU's voltage scaling happens quite often.
> 
> Fixes: 8ebf15e9c869 ("i2c: tegra: Move suspend handling to NOIRQ phase")
> Cc: <stable@...r.kernel.org> # v5.4+
> Tested-by: Thierry Reding <treding@...dia.com>
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>

Applied to for-current, thanks!


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