Re: [PATCH v3 5/7] irqchip/loongson-liointc: irqchip add 2.0 version

[zhangqing]

On 03/09/2021 05:10 PM, Marc Zyngier wrote:
> > +
> > +static void __iomem *liointc_get_reg_byname(struct device_node *node,
> > +						const char *name)
> > +{
> > +	int index = of_property_match_string(node, "reg-names", name);
> > +
> > +	return of_iomap(node, index);
> So if of_property_match_string() returns an error, you feed that error
> to of_iomap()? Somehow, I don't think that's a good idea.

Hi, Marc

Thank you for your suggestion, error handling is missing here,

     +    if (index <0)
     +           return NULL;

            return of_iomap(node, index);

It has been fixed in the fourth version, and I will send V4 soon.

> +	if (of_device_is_compatible(node, "loongson,liointc-2.0")) {
> +		base = liointc_get_reg_byname(node, "main");
> +		if (!base) {
> +			err = -ENODEV;
> +			goto out_free_priv;
> +		}
> +		for (i = 0; i < LIOINTC_NUM_CORES; i++) {
> +			priv->core_isr[i] =
> +				liointc_get_reg_byname(node, core_reg_names[i]);
> Please write assignments on a single line.

In addition, write assignments on a single line

                 for (i = 0; i <LIOINTC_NUM_CORES; i++)
                         priv->core_isr[i] = 
liointc_get_reg_byname(node, core_reg_names[i]);

    It is 92 characters, more than 80 characters...


   Thanks

   -Qing

> Thanks,
>
> 	M.