linux-kernel - Re: [PATCH AUTOSEL 5.4 105/350] iio: chemical: atlas-ph-sensor: fix iio_triggered_buffer

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Date:   Sun, 15 Dec 2019 15:25:27 -0800
From:   Matt Ranostay <matt.ranostay@...sulko.com>
To:     Jonathan Cameron <jic23@...23.retrosnub.co.uk>
Cc:     Sasha Levin <sashal@...nel.org>,
        open list <linux-kernel@...r.kernel.org>,
        stable@...r.kernel.org,
        Alexandru Ardelean <alexandru.ardelean@...log.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        "open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>
Subject: Re: [PATCH AUTOSEL 5.4 105/350] iio: chemical: atlas-ph-sensor: fix
 iio_triggered_buffer_predisable() position

On Sun, Dec 15, 2019 at 7:53 AM Jonathan Cameron
<jic23@...23.retrosnub.co.uk> wrote:
>
> On Tue, 10 Dec 2019 16:03:30 -0500
> Sasha Levin <sashal@...nel.org> wrote:
>
> > From: Alexandru Ardelean <alexandru.ardelean@...log.com>
> >
> > [ Upstream commit 0c8a6e72f3c04bfe92a64e5e0791bfe006aabe08 ]
> >
> > The iio_triggered_buffer_{predisable,postenable} functions attach/detach
> > the poll functions.
> >
> > The iio_triggered_buffer_predisable() should be called last, to detach the
> > poll func after the devices has been suspended.
> >
> > The position of iio_triggered_buffer_postenable() is correct.
> >
> > Note this is not stable material. It's a fix in the logical
> > model rather fixing an actual bug.  These are being tidied up
> > throughout the subsystem to allow more substantial rework that
> > was blocked by variations in how things were done.
>
> See comment.  This is not what I would consider stable material.
>

Outside of the comment, which really isn't probably enough to avoid
the autoselection script from detecting it (could be "stable" in the
message alone selects it :) ),
is there any way to signal that a patch is "NOT for stable trees"?
Probably don't want to clutter up the commit messages of course.

- Matt

> >
> > Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
> > Acked-by: Matt Ranostay <matt.ranostay@...sulko.com>
> > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> > Signed-off-by: Sasha Levin <sashal@...nel.org>
> > ---
> >  drivers/iio/chemical/atlas-ph-sensor.c | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c
> > index 3a20cb5d9bffc..6c175eb1c7a7f 100644
> > --- a/drivers/iio/chemical/atlas-ph-sensor.c
> > +++ b/drivers/iio/chemical/atlas-ph-sensor.c
> > @@ -323,16 +323,16 @@ static int atlas_buffer_predisable(struct iio_dev *indio_dev)
> >       struct atlas_data *data = iio_priv(indio_dev);
> >       int ret;
> >
> > -     ret = iio_triggered_buffer_predisable(indio_dev);
> > +     ret = atlas_set_interrupt(data, false);
> >       if (ret)
> >               return ret;
> >
> > -     ret = atlas_set_interrupt(data, false);
> > +     pm_runtime_mark_last_busy(&data->client->dev);
> > +     ret = pm_runtime_put_autosuspend(&data->client->dev);
> >       if (ret)
> >               return ret;
> >
> > -     pm_runtime_mark_last_busy(&data->client->dev);
> > -     return pm_runtime_put_autosuspend(&data->client->dev);
> > +     return iio_triggered_buffer_predisable(indio_dev);
> >  }
> >
> >  static const struct iio_trigger_ops atlas_interrupt_trigger_ops = {
>