linux-kernel - Re: [PATCH] spi: s3c64xx: Extract FIFO depth calculation to a dedicated macro

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Date: Sun, 21 Jan 2024 16:11:21 -0600
From: Sam Protsenko <semen.protsenko@...aro.org>
To: Andi Shyti <andi.shyti@...nel.org>
Cc: Mark Brown <broonie@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, Alim Akhtar <alim.akhtar@...sung.com>, 
	linux-spi@...r.kernel.org, linux-samsung-soc@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: s3c64xx: Extract FIFO depth calculation to a
 dedicated macro

On Sun, Jan 21, 2024 at 2:24 PM Andi Shyti <andi.shyti@...nel.org> wrote:
>
> Hi Sam,
>
> >       void __iomem *regs = sdd->regs;
> >       unsigned long val = 1;
> >       u32 status;
> > -
> > -     /* max fifo depth available */
> > -     u32 max_fifo = (FIFO_LVL_MASK(sdd) >> 1) + 1;
> > +     u32 max_fifo = FIFO_DEPTH(sdd);
>
> Why have you removed the comment? Perhaps you could place it on
> the side in order to remove that awful space.
>

The fact that `max_fifo' contains max FIFO depth is already coded in
the variable name itself. And with that new FIFO_DEPTH() macro, it
would be basically stating the same thing the third time on the same
string. Thought the removal of that comment only made the code easier
to read. If you think I should bring the comment back, please let me
know and I'll send v2.

> Not a biding comment, though:
>
> Reviewed-by: Andi Shyti <andi.shyti@...nel.org>
>
> Andi