On Sat, 2019-03-02 at 19:11 +0000, Jonathan Cameron wrote:
> [External]
>
>
> On Fri, 1 Mar 2019 07:38:45 +0000
> "Ardelean, Alexandru" <Alex.Ardelean@xxxxxxxxxx> wrote:
>
> > On Thu, 2019-02-28 at 11:25 -0300, Renato Lui Geh wrote:
> > >
> > >
> > > To maintain consistency between ad7780_probe and ad7780_remove
> > > orders,
> > > regulator initialization has been moved to after GPIO
> > > initializations.
> > >
> > > Signed-off-by: Renato Lui Geh <renatogeh@xxxxxxxxx>
> > > ---
> > > drivers/staging/iio/adc/ad7780.c | 26 +++++++++++++-------------
> > > 1 file changed, 13 insertions(+), 13 deletions(-)
> > >
> > > diff --git a/drivers/staging/iio/adc/ad7780.c
> > > b/drivers/staging/iio/adc/ad7780.c
> > > index ad7617a3a141..12aef0f101bc 100644
> > > --- a/drivers/staging/iio/adc/ad7780.c
> > > +++ b/drivers/staging/iio/adc/ad7780.c
> > > @@ -255,16 +255,6 @@ static int ad7780_probe(struct spi_device *spi)
> > >
> > > ad_sd_init(&st->sd, indio_dev, spi,
> > > &ad7780_sigma_delta_info);
> > >
> > > - st->reg = devm_regulator_get(&spi->dev, "avdd");
> > > - if (IS_ERR(st->reg))
> > > - return PTR_ERR(st->reg);
> > > -
> > > - ret = regulator_enable(st->reg);
> > > - if (ret) {
> > > - dev_err(&spi->dev, "Failed to enable specified AVdd
> > > supply\n");
> > > - return ret;
> > > - }
> > > -
> > > st->chip_info =
> > > &ad7780_chip_info_tbl[spi_get_device_id(spi)-
> > > > driver_data];
> > >
> > > @@ -284,7 +274,7 @@ static int ad7780_probe(struct spi_device *spi)
> > > ret = PTR_ERR(st->powerdown_gpio);
> > > dev_err(&spi->dev, "Failed to request powerdown GPIO:
> > > %d\n",
> > > ret);
> > > - goto error_disable_reg;
> > > + return ret;
> > > }
> > >
> > > if (st->chip_info->is_ad778x) {
> > > @@ -295,7 +285,7 @@ static int ad7780_probe(struct spi_device *spi)
> > > ret = PTR_ERR(st->gain_gpio);
> > > dev_err(&spi->dev, "Failed to request gain
> > > GPIO:
> > > %d\n",
> > > ret);
> > > - goto error_disable_reg;
> > > + return ret;
> > > }
> > >
> > > st->filter_gpio = devm_gpiod_get_optional(&spi->dev,
> > > @@ -306,10 +296,20 @@ static int ad7780_probe(struct spi_device *spi)
> > > dev_err(&spi->dev,
> > > "Failed to request filter GPIO:
> > > %d\n",
> > > ret);
> > > - goto error_disable_reg;
> > > + return ret;
> > > }
> > > }
> > >
> > > + st->reg = devm_regulator_get(&spi->dev, "avdd");
> > > + if (IS_ERR(st->reg))
> > > + return PTR_ERR(st->reg);
> > > +
> > > + ret = regulator_enable(st->reg);
> > > + if (ret) {
> > > + dev_err(&spi->dev, "Failed to enable specified AVdd
> > > supply\n");
> > > + return ret;
> > > + }
> > > +
> >
> > I'm probably missing something, but other than the fact that this moves
> > the
> > regulator init after the GPIOs init, it doesn't change much.
> > The order of the probe & remove is more-or-less the same.
> > The GPIOs will be free'd via devm_ API/stuff.
>
> This is another one from me. I'm a fanatic at times when it comes
> to probe and remove orders being precise reverses. It just makes
> review easier. Nice to not actually have to think.
>
> So I agree there is no 'actual' effect but it is in my view
> still worth doing.
Ack.
Let's leave it
>
> Jonathan
>
> >
> >
> > > ret = ad_sd_setup_buffer_and_trigger(indio_dev);
> > > if (ret)
> > > goto error_disable_reg;
> > > --
> > > 2.21.0
> > >
>
>
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