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