Re: gpiolib: why does gpio_set_bias() suppress ENOTSUPP?

[Andy Shevchenko <andy.shevchenko@xxxxxxxxx>]

On Sun, Apr 3, 2022 at 6:34 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
> On 4/2/22 03:45, Kent Gibson wrote:
> > On Fri, Apr 01, 2022 at 12:36:57PM +0200, Hans de Goede wrote:

...

> > Probably best to extend the uAPI to add a strict mode and leave
> > existing usage unchanged.
>
> Agreed, adding a strict mode to the uAPI seems best.
>
> And if you do it this way, you should probably also make
> the kernel log (using a ratelimited log function) why (e.g.
> bias setting not supported)  the call is failing since errno is
> not going to tell the user enough here I think.

...which reminds me this one: https://lwn.net/Articles/657341/

-- 
With Best Regards,
Andy Shevchenko