Re: [PATCH] staging: nvec: Silence unused argument warning in NVEC_PHD macro

[Geert Uytterhoeven]

Hi Mohammed,

On Mon, 18 Aug 2025 at 17:10, Mohammed Guermoud
<mohammed.guermoud@xxxxxxxxx> wrote:
> The NVEC_PHD macro was defined with three arguments (str, buf, len)
> that were not used in its empty body, causing a compiler warning.
>
> This patch silences the warning by explicitly casting the unused
> arguments to (void), making the intent clear without changing
> functionality.
>
> Signed-off-by: Mohammed Guermoud <mohammed.guermoud@xxxxxxxxx>

Thanks for your patch!

> --- a/drivers/staging/nvec/nvec_ps2.c
> +++ b/drivers/staging/nvec/nvec_ps2.c
> @@ -28,7 +28,7 @@
>         print_hex_dump(KERN_DEBUG, str, DUMP_PREFIX_NONE, \
>                         16, 1, buf, len, false)
>  #else
> -#define NVEC_PHD(str, buf, len) do { } while (0)
> +#define NVEC_PHD(str, buf, len) do { (void)str; (void)buf; (void)len; } while (0)
>  #endif
>
>  enum ps2_subcmds {

The proper solution would be to remove the custom NVEC_PHD() macro (and
NVEC_PS2_DEBUG), and just call print_hex_dump_debug() directly instead.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds