linux-kernel - Re: [PATCH 7/7] regulator: core: Remove loop disabling supplies in regulator_force

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Message-ID: <20181120155458.GG3894@sirena.org.uk>
Date:   Tue, 20 Nov 2018 15:54:58 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>, evgreen@...omium.org,
        swboyd@...omium.org, Dmitry Osipenko <digetx@...il.com>,
        ryandcase@...omium.org, David Collins <collinsd@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/7] regulator: core: Remove loop disabling supplies in
 regulator_force_disable()

On Mon, Nov 19, 2018 at 04:26:54PM -0800, Douglas Anderson wrote:
> In regulator_force_disable() there was a strange loop that looked like:
> 
>   while (rdev->open_count--)
>     regulator_disable(rdev->supply);
> 
> I'm not totally sure what the goal was for this loop, but it seems
> wrong to me.  If anything I think maybe we should have been looping
> over our use_count, but even that might be a little strange.  For now
> let's just remove the code and we can add something back in if someone
> can explain what's expected.

This should be using use_count, what that loop is doing is dropping all
the enables that the regulator being force disabled had propagated up
all the enables it passed up the chain of supplies.

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