linux-kernel - Re: [PATCH v2] regulator: devres: introduce managed enable and disable operations

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Message-ID: <20170220190258.fympxa43cdrzd44b@sirena.org.uk>
Date:   Mon, 20 Feb 2017 11:02:58 -0800
From:   Mark Brown <broonie@...nel.org>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] regulator: devres: introduce managed enable and
 disable operations

On Mon, Feb 13, 2017 at 10:51:52AM -0800, Dmitry Torokhov wrote:

> I think it is helps if you think about devm_regulator_enable and regular
> regulator_enable as managed and unmanaged *actions*, not resources. So

That's how I see them but it's still not really helping my concern, in
general if you do a thing with devm_ you don't want to also be
interacting with the same resource in the same way with a non-managed
call.

> managed action of enabling regulator will be undone on remove() and you
> have to manually undo unmanaged regulator_disable() on resume(). It is
> not worse than having unbalanced regulator_enable/disable between
> probe()/suspend()/resume()/remove().

I find it that bit harder to think about - tracking balancing of the
same thing is a lot easier than tracking balancing of two different not
quite equivalent things.

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