On Fri, Mar 03, 2023 at 10:33:43PM +0800, Pin-yen Lin wrote:
> Add helpers to register and unregister Type-C "switches" for bridges
> capable of switching their output between two downstream devices.
>
> The helper registers USB Type-C mode switches when the "mode-switch"
> and the "reg" properties are available in Device Tree.
...
> + port_data->typec_mux = typec_mux_register(dev, &mux_desc);
> + if (IS_ERR(port_data->typec_mux)) {
> + ret = PTR_ERR(port_data->typec_mux);
> + dev_err(dev, "Mode switch register for port %d failed: %d\n",
> + port_num, ret);
> + return ret;
> + }
> +
> + return 0;
Can be simply
port_data->typec_mux = typec_mux_register(dev, &mux_desc);
ret = PTR_ERR_OR_ZERO(port_data->typec_mux);
if (ret)
dev_err(dev, "Mode switch register for port %d failed: %d\n",
port_num, ret);
return ret;
...
> + switch_desc->typec_ports = devm_kcalloc(dev,
> switch_desc->num_typec_switches,
> + sizeof(struct
> drm_dp_typec_port_data),
> + GFP_KERNEL);
> + if (!switch_desc->typec_ports)
> + return -ENOMEM;
How often this function _can_ be called during the runtime?
If it's _possible_ to call it infinite times, consider *not* using devm.
--
With Best Regards,
Andy Shevchenko
