On Fri, Mar 03, 2023 at 10:33:50PM +0800, Pin-yen Lin wrote:
> Register USB Type-C mode switches when the "mode-switch" property and
> relevant port are available in Device Tree. Configure the "lane_swap"
> state based on the entered alternate mode for a specific Type-C
> connector, which ends up updating the lane swap registers of the it6505
> chip.
...
> + it6505->port_data = devm_kcalloc(dev, switch_desc->num_typec_switches,
> + sizeof(struct it6505_typec_port_data),
> + GFP_KERNEL);
> +
Same, no need for a blank line here.
> + if (!it6505->port_data) {
> + ret = -ENOMEM;
> + goto unregister_mux;
> + }
...
> + it6505->port_data[i].lane_swap = (dp_lanes[0] / 2 == 1);
' % 2 == 0' ?
...
Wouldn't be better to have
ret = PTR_ERR_OR_ZERO(extcon);
here and amend the following accordingly?
> if (PTR_ERR(extcon) == -EPROBE_DEFER)
> return -EPROBE_DEFER;
> if (IS_ERR(extcon)) {
> - dev_err(dev, "can not get extcon device!");
> - return PTR_ERR(extcon);
> + if (PTR_ERR(extcon) != -ENODEV)
> + dev_warn(dev, "Cannot get extcon device: %ld\n",
> + PTR_ERR(extcon));
> + it6505->extcon = NULL;
> + } else {
> + it6505->extcon = extcon;
> }
>
> - it6505->extcon = extcon;
> + init_completion(&it6505->mux_register);
> + ret = it6505_register_typec_switches(dev, it6505);
> + if (ret) {
> + if (ret != -ENODEV)
> + dev_warn(dev, "Didn't register Type-C switches, err: %d\n",
> + ret);
> + if (!it6505->extcon) {
> + dev_err(dev, "Both extcon and typec-switch are not registered.\n");
> + return -EINVAL;
> + }
> + }
Perhaps
if (ret != -ENODEV)
dev_warn(dev, "Didn't register Type-C switches, err: %d\n", ret);
if (ret && !it6505->extcon) {
dev_err(dev, "Both extcon and typec-switch are not registered.\n");
return ret;
}
?
--
With Best Regards,
Andy Shevchenko
