From: Mark Brown <broonie@kernel.org>
To: Doug Anderson <dianders@chromium.org>
Cc: Marco Felsch <m.felsch@pengutronix.de>,
Chunyan Zhang <zhang.chunyan@linaro.org>,
Liam Girdwood <lgirdwood@gmail.com>,
ckeepax@opensource.cirrus.com,
LKML <linux-kernel@vger.kernel.org>,
Sascha Hauer <kernel@pengutronix.de>
Subject: Re: [PATCH 1/3] regulator: core: fix boot-on regulators use_count usage
Date: Tue, 24 Sep 2019 11:27:58 -0700 [thread overview]
Message-ID: <20190924182758.GC2036@sirena.org.uk> (raw)
In-Reply-To: <CAD=FV=VkaXDn034EFnJWYvWwyLgvq7ajfgMRm9mbhQeRKmPDRQ@mail.gmail.com>
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On Mon, Sep 23, 2019 at 03:40:09PM -0700, Doug Anderson wrote:
> On Mon, Sep 23, 2019 at 11:49 AM Mark Brown <broonie@kernel.org> wrote:
> > On Mon, Sep 23, 2019 at 11:36:11AM -0700, Doug Anderson wrote:
> > > 1. Would it be valid to say that it's always incorrect to set this
> > > property if there is a way to read the status back from the regulator?
> > As originally intended, yes. I'm now not 100% sure that it won't
> > break any existing systems though :/
> Should I change the bindings doc to say that?
Sure.
> > It should be possible to do a regulator_disable() though I'm not
> > sure anyone actually uses that. The pattern for a regular
> > consumer should be the normal enable/disable pair to handle
> > shared usage, only an exclusive consumer should be able to use
> > just a straight disable.
> Ah, I see, I wasn't aware of the "exclusive" special case! Marco: is
> this working for you? I wonder if we need to match
> "regulator->enable_count" to "rdev->use_count" at the end of
> _regulator_get() in the exclusive case...
Yes, I think that case has been missed when adding the enable
counts - I've never actually had a system myself that made any
use of this stuff. It probably needs an audit of the users to
make sure nobody's relying on the current behaviour though I
can't think how they would.
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next prev parent reply other threads:[~2019-09-24 18:28 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-17 15:40 [PATCH 0/3] Regulator core fixes Marco Felsch
2019-09-17 15:40 ` [PATCH 1/3] regulator: core: fix boot-on regulators use_count usage Marco Felsch
2019-09-23 18:02 ` Doug Anderson
2019-09-23 18:14 ` Mark Brown
2019-09-23 18:36 ` Doug Anderson
2019-09-23 18:49 ` Mark Brown
2019-09-23 22:40 ` Doug Anderson
2019-09-24 18:27 ` Mark Brown [this message]
2019-09-26 19:44 ` Doug Anderson
2019-09-27 8:47 ` Marco Felsch
2019-10-01 19:57 ` Doug Anderson
2019-10-04 6:34 ` Matti Vaittinen
2019-10-04 11:32 ` Mark Brown
2019-10-04 12:03 ` Vaittinen, Matti
2019-10-04 15:01 ` Mark Brown
2019-10-07 9:34 ` Marco Felsch
2019-10-07 18:29 ` Mark Brown
2019-10-08 6:03 ` Marco Felsch
2019-10-08 12:51 ` Mark Brown
2019-10-08 14:56 ` Marco Felsch
2019-10-08 15:42 ` Mark Brown
2019-10-08 16:16 ` Marco Felsch
2019-10-08 16:23 ` Mark Brown
2019-10-08 20:16 ` Marco Felsch
2019-10-09 9:54 ` Mark Brown
2019-09-17 15:40 ` [PATCH 2/3] regulator: of: fix suspend-min/max-voltage parsing Marco Felsch
2019-09-17 16:02 ` Applied "regulator: of: fix suspend-min/max-voltage parsing" to the regulator tree Mark Brown
2019-09-17 15:40 ` [PATCH 3/3] regulator: core: make regulator_register() EPROBE_DEFER aware Marco Felsch
2019-09-17 16:02 ` Applied "regulator: core: make regulator_register() EPROBE_DEFER aware" to the regulator tree Mark Brown
2019-09-18 0:57 ` [PATCH 3/3] regulator: core: make regulator_register() EPROBE_DEFER aware Dmitry Torokhov
2019-09-18 8:18 ` Marco Felsch
2019-09-18 15:53 ` Dmitry Torokhov
2019-09-18 16:06 ` Marco Felsch
2019-09-18 16:08 ` Mark Brown
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