Re: [PATCH 3/4] gpio: loongson1: Add DT support

[andy.shevchenko@xxxxxxxxx]

Wed, Feb 22, 2023 at 07:12:12PM +0800, Keguang Zhang kirjoitti:
> This patch adds DT support for Loongson-1 GPIO driver,
> including the following changes.
> - Add the of_match_table
> - Parse the ngpios property
> - Parse the alias id

Split!

...

> +	if (of_property_read_u32(dn, "ngpios", &ngpios)) {
> +		dev_err(dev, "Missing ngpios OF property\n");
> +		return -ENODEV;
> +	}

Why?! GPIO library has this already.

...

> +	id = of_alias_get_id(dn, "gpio");
> +	if (id < 0) {
> +		dev_err(dev, "Couldn't get OF id\n");
> +		return id;
> +	}

What is this for?

...

> +	ls1x_gc->gc.base = pdev->id * BITS_PER_LONG;
> -	ls1x_gc->gc.base = pdev->id * 32;

No way. This is change makes me thing that initially it's simply wrong. Please,
just use -1 for the base.

...

> +static const struct of_device_id ls1x_gpio_dt_ids[] = {
> +	{ .compatible = "loongson,ls1x-gpio", },

Inner comma is not needed.

> +	{ /* sentinel */ }
> +};

You missed MODULE_DEVICE_TABLE().

-- 
With Best Regards,
Andy Shevchenko