Re: [PATCH] media: i2c: max9286: Use dev_err_probe() helper

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On Wed, Dec 08, 2021 at 01:29:57PM +0100, Geert Uytterhoeven wrote:
> On Wed, Dec 8, 2021 at 1:18 PM Niklas Söderlund wrote:
> > Use the dev_err_probe() helper, instead of open-coding the same
> > operation. While at it retrieve the error once and use it from
> > 'ret' instead of retrieving it twice.
> >
> > Suggested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> 
> I guess that's too much credit for me ;-)
> 
> > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> 
> > --- a/drivers/media/i2c/max9286.c
> > +++ b/drivers/media/i2c/max9286.c
> > @@ -1295,11 +1295,9 @@ static int max9286_probe(struct i2c_client *client)
> >
> >         priv->regulator = devm_regulator_get(&client->dev, "poc");
> >         if (IS_ERR(priv->regulator)) {
> > -               if (PTR_ERR(priv->regulator) != -EPROBE_DEFER)
> > -                       dev_err(&client->dev,
> > -                               "Unable to get PoC regulator (%ld)\n",
> > -                               PTR_ERR(priv->regulator));
> >                 ret = PTR_ERR(priv->regulator);
> > +               dev_err_probe(&client->dev, ret,
> > +                             "Unable to get PoC regulator\n");
> 
> You can even combine these two, as dev_err_probe() was designed
> to streamline error handling, and thus returns the error again:
> 
>     ret = dev_err_probe(&client->dev, PTR_ERR(priv->regulator),
>                         "Unable to get PoC regulator\n");

With or witout that,

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

> >                 goto err_powerdown;
> >         }
> 
> Regardless:
> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

-- 
Regards,

Laurent Pinchart



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