linux-kernel - Re: [PATCH] devfreq: rk3399_dmc: Simplify with dev_err

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Date:   Sat, 27 Feb 2021 17:35:23 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Chanwoo Choi <chanwoo@...nel.org>
Cc:     MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Linux PM list <linux-pm@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] devfreq: rk3399_dmc: Simplify with dev_err_probe()

On Sat, 29 Aug 2020 at 15:10, Chanwoo Choi <chanwoo@...nel.org> wrote:
>
> On Sat, Aug 29, 2020 at 12:31 AM Krzysztof Kozlowski <krzk@...nel.org> wrote:
> >
> > Common pattern of handling deferred probe can be simplified with
> > dev_err_probe().  Less code and the error value gets printed.
> >
> > Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> > ---
> >  drivers/devfreq/rk3399_dmc.c | 20 ++++++--------------
> >  1 file changed, 6 insertions(+), 14 deletions(-)
> >
> > diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c
> > index 027769e39f9b..35b3542f1f7b 100644
> > --- a/drivers/devfreq/rk3399_dmc.c
> > +++ b/drivers/devfreq/rk3399_dmc.c
> > @@ -324,22 +324,14 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
> >         mutex_init(&data->lock);
> >
> >         data->vdd_center = devm_regulator_get(dev, "center");
> > -       if (IS_ERR(data->vdd_center)) {
> > -               if (PTR_ERR(data->vdd_center) == -EPROBE_DEFER)
> > -                       return -EPROBE_DEFER;
> > -
> > -               dev_err(dev, "Cannot get the regulator \"center\"\n");
> > -               return PTR_ERR(data->vdd_center);
> > -       }
> > +       if (IS_ERR(data->vdd_center))
> > +               return dev_err_probe(dev, PTR_ERR(data->vdd_center),
> > +                                    "Cannot get the regulator \"center\"\n");
> >
> >         data->dmc_clk = devm_clk_get(dev, "dmc_clk");
> > -       if (IS_ERR(data->dmc_clk)) {
> > -               if (PTR_ERR(data->dmc_clk) == -EPROBE_DEFER)
> > -                       return -EPROBE_DEFER;
> > -
> > -               dev_err(dev, "Cannot get the clk dmc_clk\n");
> > -               return PTR_ERR(data->dmc_clk);
> > -       }
> > +       if (IS_ERR(data->dmc_clk))
> > +               return dev_err_probe(dev, PTR_ERR(data->dmc_clk),
> > +                                    "Cannot get the clk dmc_clk\n");
> >
> >         data->edev = devfreq_event_get_edev_by_phandle(dev, 0);
> >         if (IS_ERR(data->edev))
> > --
> > 2.17.1
> >
>
> Applied it. Thanks.

Hi Chanwoo,

Do you know what happened with this patch? You replied that it is
applied but I cannot find it in the Linus' or next trees.


Best regards,
Krzysztof