[PATCH v5 1/3] auxdisplay: Add 7-segment LED display driver
Andy Shevchenko
andy at kernel.org
Thu Mar 7 05:23:29 PST 2024
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 at 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
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