Re: [PATCH net-next v4 2/2] net: dsa: microchip: Add drive strength configuration

Oleksij Rempel
2023-09-12T06:47:27Z

On Tue, Sep 12, 2023 at 07:22:21AM +0200, Christophe JAILLET wrote:
...
> > +static void ksz_drive_strength_error(struct ksz_device *dev,
> > + const struct ksz_drive_strength *array,
> > + size_t array_size, int milliamp)
> > +{
> > + char supported_values[100];
> > + size_t remaining_size;
> > + int added_len;
> > + char *ptr;
> > + int i;
> > +
> > + remaining_size = sizeof(supported_values);
> > + ptr = supported_values;
> > +
> > + for (i = 0; i < array_size; i++) {
> > + added_len = snprintf(ptr, remaining_size,
> > + i == 0 ? "%d" : ", %d", array[i].milliamp);
> > +
> > + if (added_len < 0 || added_len >= remaining_size)
>
> Nit: snprintf() does not return negatives value.

thx! will fix it

...
> > +static int ksz_parse_drive_strength(struct ksz_device *dev)
> > +{
> > + struct ksz_driver_strength_prop of_props[] = {
> > + [KSZ_DRIVER_STRENGTH_HI] = {
> > + .name = "microchip,hi-drive-strength-microamp",
> > + .offset = SW_HI_SPEED_DRIVE_STRENGTH_S,
> > + .value = -1
> > + },
> > + [KSZ_DRIVER_STRENGTH_LO] = {
> > + .name = "microchip,lo-drive-strength-microamp",
> > + .offset = SW_LO_SPEED_DRIVE_STRENGTH_S,
> > + .value = -1
> > + },
> > + [KSZ_DRIVER_STRENGTH_IO] = {
> > + .name = "microchip,io-drive-strength-microamp",
> > + .offset = 0, /* don't care */
> > + .value = -1
> > + },
> > + };
> > + struct device_node *np = dev->dev->of_node;
> > + bool found = false;
> > + int i, ret;
> > +
> > + for (i = 0; i < ARRAY_SIZE(of_props); i++) {
> > + ret = of_property_read_u32(np, of_props[i].name,
> > + &of_props[i].value);
> > + if (ret && ret != -EINVAL)
> > + dev_warn(dev->dev, "Failed to read %s\n",
> > + of_props[i].name);
> > + if (ret)
> > + continue;
> > +
> > + found = true;
>
> Nit: break?

No, we may have more then one property.

Regards,
Oleksij
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |