Re: [PATCH 3/4] spi: spidev_test: Use perror() only if errno is not 0

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

On Thu, Feb 13, 2020 at 5:17 AM Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> wrote:
> It is better to use perror() only if errno is not 0, it should use printf()
> when errno is 0, otherwise there exists redudant ": Success".
>
> E.g. without this patch:
>
> $ ./spidev_test -p 1234 --input test.bin
> only one of -p and --input may be selected: Success
> Aborted (core dumped)
>
> With this patch:
>
> $ ./spidev_test -p 1234 --input test.bin
> only one of -p and --input may be selected
> Aborted (core dumped)
>
> Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

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