[PATCH] cmd: spi: Judge the number of added parameters

[Simon Glass]

On Wed, 7 Dec 2022 at 03:50, chenzhipeng <chenzhipeng at eswincomputing.com> wrote:
>
> When only sspi is entered, help information can be printed.
>
> Signed-off-by: chenzhipeng <chenzhipeng at eswincomputing.com>
> ---
>  cmd/spi.c | 3 +++
>  1 file changed, 3 insertions(+)
>

Reviewed-by: Simon Glass <sjg at chromium.org>



> diff --git a/cmd/spi.c b/cmd/spi.c
> index 454ebe37d7..f30018f33b 100644
> --- a/cmd/spi.c
> +++ b/cmd/spi.c
> @@ -112,6 +112,9 @@ int do_spi(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
>
>         if ((flag & CMD_FLAG_REPEAT) == 0)
>         {
> +               if (argc < 2)
> +                       return CMD_RET_USAGE;
> +
>                 if (argc >= 2) {
>                         mode = CONFIG_DEFAULT_SPI_MODE;
>                         bus = dectoul(argv[1], &cp);
> --
> 2.25.1
>