linux-kernel - Re: [PATCH] [v2] iio: proximity: pulsedlight: Fix rumtime PM imbalance on error

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Message-ID: <20210418104556.6cac5f30@jic23-huawei>
Date:   Sun, 18 Apr 2021 10:45:56 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Dinghao Liu <dinghao.liu@....edu.cn>, Kangjie Lu <kjlu@....edu>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Alexandru Ardelean <alexandru.ardelean@...log.com>,
        Matt Ranostay <matt.ranostay@...sulko.com>,
        linux-iio <linux-iio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] [v2] iio: proximity: pulsedlight: Fix rumtime PM
 imbalance on error

On Mon, 12 Apr 2021 12:23:43 +0300
Andy Shevchenko <andy.shevchenko@...il.com> wrote:

> On Mon, Apr 12, 2021 at 8:32 AM Dinghao Liu <dinghao.liu@....edu.cn> wrote:
> >
> > When lidar_write_control() fails, a pairing PM usage counter
> > decrement is needed to keep the counter balanced.  
> 
> You forgot to collect given tags.
> 
> > Fixes: 4ac4e086fd8c5 ("iio: pulsedlight-lidar-lite: add runtime PM")
> > Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>

I gathered up the tags by hand and applied to the fixes-togreg branch of iio.git

Thanks,

Jonathan

> > ---
> >
> > Changelog:
> >
> > v2: - Add the fix tag.
> > ---
> >  drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
> > index c685f10b5ae4..cc206bfa09c7 100644
> > --- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
> > +++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
> > @@ -160,6 +160,7 @@ static int lidar_get_measurement(struct lidar_data *data, u16 *reg)
> >         ret = lidar_write_control(data, LIDAR_REG_CONTROL_ACQUIRE);
> >         if (ret < 0) {
> >                 dev_err(&client->dev, "cannot send start measurement command");
> > +               pm_runtime_put_noidle(&client->dev);
> >                 return ret;
> >         }
> >
> > --
> > 2.17.1
> >  
> 
>