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Date: Thu, 7 Mar 2024 15:23:29 +0200
From: Andy Shevchenko <andy@kernel.org>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>, robh+dt@kernel.org,
	krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
	andrew@lunn.ch, gregory.clement@bootlin.com,
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Subject: Re: [PATCH v5 1/3] auxdisplay: Add 7-segment LED display driver
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References: <20240306235021.976083-1-chris.packham@alliedtelesis.co.nz>
 <20240306235021.976083-2-chris.packham@alliedtelesis.co.nz>
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On Thu, Mar 07, 2024 at 02:13:23PM +0100, Geert Uytterhoeven wrote:
> On Thu, Mar 7, 2024 at 12:50 AM Chris Packham
> <chris.packham@alliedtelesis.co.nz> wrote:

..

> > +       DECLARE_BITMAP(values, 8) = { 0 };

While doing next version, drop this '0', as we have in another terminator
the same approach (i.o.w. for the sake of consistency).

..

> > +       gpiod_set_array_value_cansleep(priv->segment_gpios->ndescs, priv->segment_gpios->desc,
> > +                                      priv->segment_gpios->info, values);
> 
> This may still cause an out-of-bounds access of values if ndescs > 8.

Not really. It will be only for ndescs >= 32 (on 32-bit) or 64
(on 64-bit accordingly).

But good catch, we better to narrow the range down.

-- 
With Best Regards,
Andy Shevchenko