Re: [RFC PATCH v2 4/5] iio: accel: Support Kionix/ROHM KX022A accelerometer

From: Andy Shevchenko
Date: Mon Oct 10 2022 - 02:15:37 EST


On Sun, Oct 09, 2022 at 01:33:51PM +0100, Jonathan Cameron wrote:
> On Thu, 6 Oct 2022 21:32:11 +0300
> Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> > On Thu, Oct 06, 2022 at 05:38:14PM +0300, Matti Vaittinen wrote:

...

> > > +module_param(g_kx022a_use_buffer, bool, 0);
> > > +MODULE_PARM_DESC(g_kx022a_use_buffer,
> > > + "Buffer samples. Use at own risk. Fifo must not overflow");
> >
> > Why?! We usually do not allow module parameters in the new code.
>
> Badly broken hardware - was my suggestion. Alternatives if there are usecases
> that need to use the fifo, but it can wedge hard in a fashion that is impossible
> to prevent from the driver? My gut feeling is still drop the support entirely
> with a strong comment in the code that the hardware is broken in a fashion we don't
> know how to work around.

I also would drop this from upstream and if anybody curious, provide some kind
of GitHub gist for that. Also it needs some communication with a vendor to
clarify the things.

--
With Best Regards,
Andy Shevchenko