Re: [PATCH] gpio: gpio-xgene: simplify probe, return devm_gpiochip_add_data() directly

From: Alexandru Ardelean
Date: Mon May 24 2021 - 03:21:36 EST


On Sun, 23 May 2021 at 21:31, Bartosz Golaszewski
<bgolaszewski@xxxxxxxxxxxx> wrote:
>
> On Fri, May 21, 2021 at 8:10 PM Alexandru Ardelean
> <aardelean@xxxxxxxxxxx> wrote:
> >
> > The handling of the return value from devm_gpiochip_add_data() is a bit
> > redundant. It prints messages on error and success cases.
> > While the success message may be useful, it is more in the area of log
> > spam, and these can be printed with other forms of kernel logging.
> >
> > This change does a direct return with devm_gpiochip_add_data() in the probe
> > function.
> >
> > The platform_set_drvdata() is needed, as this driver uses the stored
> > private date in the PM suspend/resume routines.
> >
> > Signed-off-by: Alexandru Ardelean <aardelean@xxxxxxxxxxx>
> > ---
> > drivers/gpio/gpio-xgene.c | 11 +----------
> > 1 file changed, 1 insertion(+), 10 deletions(-)
> >
> > diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c
> > index 532b0df8a1f2..fb4b0c67aeef 100644
> > --- a/drivers/gpio/gpio-xgene.c
> > +++ b/drivers/gpio/gpio-xgene.c
> > @@ -159,7 +159,6 @@ static SIMPLE_DEV_PM_OPS(xgene_gpio_pm, xgene_gpio_suspend, xgene_gpio_resume);
> > static int xgene_gpio_probe(struct platform_device *pdev)
> > {
> > struct xgene_gpio *gpio;
> > - int err = 0;
> >
> > gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
> > if (!gpio)
> > @@ -183,15 +182,7 @@ static int xgene_gpio_probe(struct platform_device *pdev)
> >
> > platform_set_drvdata(pdev, gpio);
> >
> > - err = devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);
> > - if (err) {
> > - dev_err(&pdev->dev,
> > - "failed to register gpiochip.\n");
> > - return err;
> > - }
> > -
> > - dev_info(&pdev->dev, "X-Gene GPIO driver registered.\n");
> > - return 0;
> > + return devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);
> > }
> >
> > static const struct of_device_id xgene_gpio_of_match[] = {
> > --
> > 2.31.1
> >
>
> Applied, thanks.
>
> For the future: the subject should be: "gpio: xgene: ..." here and
> everywhere else.

ack
will keep that in mind

thanks :)
Alex

>
> Bart