linux-kernel - Re: [PATCH] gpio: xra1403: remove unneeded spi_set

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Date:   Mon, 30 Nov 2020 17:37:35 +0100
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Alexandru Ardelean <alexandru.ardelean@...log.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Nandor Han <nandor.han@...com>,
        Semi Malinen <semi.malinen@...com>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH] gpio: xra1403: remove unneeded spi_set_drvdata()

On Thu, Nov 19, 2020 at 4:04 PM Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
>
> On Thu, Nov 19, 2020 at 4:17 PM Alexandru Ardelean
> <alexandru.ardelean@...log.com> wrote:
> >
> > There is no matching spi_get_drvdata() call in the driver, so there is no
> > need to do spi_set_drvdata(). This looks like it probably was copied from a
> > driver that used both spi_set_drvdata() & spi_get_drvdata().
>
> While above luckily (*) okay it may not always be the case.
>
> *) it can be paired with dev_get_drvdata() which is usual for PM callbacks.
>
> With amended commit message
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
>

I applied this patch. I wasn't sure exactly how you want the commit
message to be changed - it sounds pretty clear to me so I took it.

Bartosz

> > Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
> > ---
> >  drivers/gpio/gpio-xra1403.c | 10 +---------
> >  1 file changed, 1 insertion(+), 9 deletions(-)
> >
> > diff --git a/drivers/gpio/gpio-xra1403.c b/drivers/gpio/gpio-xra1403.c
> > index e2cac12092af..49c878cfd5c6 100644
> > --- a/drivers/gpio/gpio-xra1403.c
> > +++ b/drivers/gpio/gpio-xra1403.c
> > @@ -186,15 +186,7 @@ static int xra1403_probe(struct spi_device *spi)
> >                 return ret;
> >         }
> >
> > -       ret = devm_gpiochip_add_data(&spi->dev, &xra->chip, xra);
> > -       if (ret < 0) {
> > -               dev_err(&spi->dev, "Unable to register gpiochip\n");
> > -               return ret;
> > -       }
> > -
> > -       spi_set_drvdata(spi, xra);
> > -
> > -       return 0;
> > +       return devm_gpiochip_add_data(&spi->dev, &xra->chip, xra);
> >  }
> >
> >  static const struct spi_device_id xra1403_ids[] = {
> > --
> > 2.17.1