Re: [PATCH v2 09/16] reset: starfive-jh7100: Add StarFive JH7100 reset driver

[Andy Shevchenko <andy.shevchenko@xxxxxxxxx>]

On Fri, Oct 22, 2021 at 4:35 PM Emil Renner Berthing <kernel@xxxxxxxx> wrote:
> On Fri, 22 Oct 2021 at 14:56, Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote:
> > On Thu, Oct 21, 2021 at 8:43 PM Emil Renner Berthing <kernel@xxxxxxxx> wrote:

...

> > Why all these ugly % 32 against constants?
>
> Because the JH7100_RST_ values goes higher than 31. There is a
> BIT_MASK macro, but that does % BITS_PER_LONG and this is a 64bit
> machine.

And? It's exactly what you have to use!

...

> > Can you convert this to simple
> >
> >   if (assert)
> >     ret = readl_...
> >   else
> >     ret = readl_...
> >
> > below?
>
> I don't see how that would work. We're using the done value in in the
> readl_poll_timeout. Maybe you can be a bit more explicit.

Supply done either == mask or == ^mask. Try it.

-- 
With Best Regards,
Andy Shevchenko