Re: [PATCH] spi: bcm2835: add a sentinel at the end of the lookup array

[Bartosz Golaszewski <brgl@xxxxxxxx>]

On Thu, Oct 5, 2023 at 11:10 AM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>
> On Wed, Oct 04, 2023 at 08:39:06PM +0200, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
> >
> > GPIOLIB expects the array of lookup entries to be terminated with an
> > empty member. We need to increase the size of the variable length array
> > in the lookup table by 1.
>
> Right and seems we (used to?) have the same mistake spread over the kernel.

Almost all lookup tables are static and have a sentinel appended. The
temporary lookup hack is only used here and in the int3472 driver
AFAIK so it's not that bad.

> Perhaps a helper at some point?
>

I don't want to make it a habit for people. This is still a hack, just
less bad than what was here before. So I don't think we need a helper
here.

Bart

> Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
>
> --
> With Best Regards,
> Andy Shevchenko
>
>