Re: [PATCH 3/5] USB: serial: add sysfs attribute to suppress ready signalling on open

[Andy Shevchenko]

On Mon, Nov 30, 2020 at 5:42 PM Johan Hovold <johan@xxxxxxxxxx> wrote:
>
> Add a nordy sysfs attribute to suppress raising the modem-control lines
> on open to signal DTE readiness.
>
> This can be use to prevent undesirable side-effects on open for
> applications where the DTR and RTS lines are used for non-standard
> purposes such as generating power-on and reset pulses.

...

> +       ret = kstrtouint(buf, 0, &val);
> +       if (ret)
> +               return ret;
> +
> +       if (val > 1)
> +               return -EINVAL;

kstrtobool() ?

-- 
With Best Regards,
Andy Shevchenko