Re: [PATCH] [v2] leds: gpio: make legacy gpiolib interface optional

[Andy Shevchenko]

On Tue, May 05, 2026 at 04:19:36PM +0300, Andy Shevchenko wrote:
> On Tue, May 05, 2026 at 03:10:28PM +0200, Arnd Bergmann wrote:
> > On Mon, May 4, 2026, at 09:31, Andy Shevchenko wrote:
> > > On Thu, Apr 30, 2026 at 11:11:55AM +0200, Arnd Bergmann wrote:

...

> > >> +	return gpiod;
> > >
> > > Do we need to repeat the upper `return gpiod;` statement? With this split
> > > I don't see that we need to have two repetitive return statements.
> > 
> > Right, I've simplified this now to
> > 
> > static struct gpio_desc *gpio_led_get_gpiod(struct device *dev, int idx,
> >                                            const struct gpio_led *template)
> > {
> >        struct gpio_desc *gpiod;
> > 
> >        gpiod = devm_gpiod_get_index_optional(dev, NULL, idx, GPIOD_OUT_LOW);
> 
> >        if (gpiod && !IS_ERR(gpiod));
> 
> And this is not needed. The below is NULL-aware.
> 
> >                gpiod_set_consumer_name(gpiod, template->name);
> > 
> >        return gpiod;
> > }

To be clear

        struct gpio_desc *gpiod;

        gpiod = devm_gpiod_get_index_optional(dev, NULL, idx, GPIOD_OUT_LOW);
        if (!IS_ERR(gpiod))
                gpiod_set_consumer_name(gpiod, template->name);

        return gpiod;

But looking at the original code, I would leave another return, so

	gpiod = devm_gpiod_get_index_optional(dev, NULL, idx, GPIOD_OUT_LOW);
	if (IS_ERR(gpiod))
		return gpiod;

	gpiod_set_consumer_name(gpiod, template->name);
	return gpiod;

> > which still keeps the existing behavior but is a bit more compact.
> > 
> > I think we can actually just remove that function altogether
> > and just pass the name into devm_gpiod_get_index_optional()
> > from the caller like
> > 
> >   gpiod = devm_gpiod_get_index_optional(dev, template->name, i, GPIOD_OUT_LOW);
> > 
> > Did I get that right? If so, I'll fold that in as another

Nope, the con_id != consumer name. Can't be done this way.

> > simplification.

-- 
With Best Regards,
Andy Shevchenko