linux-kernel - Re: [PATCH] [v2] iio: magnetometer: ak8974: Fix runtime PM imbalance on error

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Message-ID: <CACRpkdZy0Pip1ii0g+PYpnkO21e6=J0ZXzudEgvEycCbmWYJxA@mail.gmail.com>
Date:   Mon, 8 Jun 2020 14:12:18 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     Dinghao Liu <dinghao.liu@....edu.cn>, Kangjie Lu <kjlu@....edu>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] [v2] iio: magnetometer: ak8974: Fix runtime PM imbalance
 on error

Hi Jonathan,

sorry for missing this :(

On Sun, May 31, 2020 at 4:00 PM Jonathan Cameron <jic23@...nel.org> wrote:
> On Tue, 26 May 2020 13:13:56 +0200
> Linus Walleij <linus.walleij@...aro.org> wrote:
>
> > On Tue, May 26, 2020 at 12:47 PM Dinghao Liu <dinghao.liu@....edu.cn> wrote:
> >
> > > When devm_regmap_init_i2c() returns an error code, a pairing
> > > runtime PM usage counter decrement is needed to keep the
> > > counter balanced. For error paths after ak8974_set_power(),
> > > ak8974_detect() and ak8974_reset(), things are the same.
> > >
> > > However, When iio_triggered_buffer_setup() returns an error
> > > code, there will be two PM usgae counter decrements.
> > >
> > > Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
> > > ---
> > >
> > > Changelog:
> > >
> > > v2: - Change 3 goto targets from "power_off" to
> > >       "disabel_pm". Remove unused lable "power_off".
> > >       Move 3 PM runtime related calls to the end of
> > >       the function.
> >
> > Thanks for fixing this Dinghao!
> > Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
>
> Could I have a fixes tag for this one?

It's been  there since the beginning so:
Fixes: 7c94a8b2ee8c ("iio: magn: add a driver for AK8974")

Yours,
Linus Walleij