[U-Boot] [PATCH] mmc: show error message when "mmc dev" command fails

[Stefan Roese <sr@denx.de>]

On 10.02.2016 13:46, Masahiro Yamada wrote:
> Currently, "mmc dev" can silently fail.  In case of failure, tell
> the user about it.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---
>
>   cmd/mmc.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/cmd/mmc.c b/cmd/mmc.c
> index 1c7156f..87a9fb6 100644
> --- a/cmd/mmc.c
> +++ b/cmd/mmc.c
> @@ -463,8 +463,10 @@ static int do_mmc_dev(cmd_tbl_t *cmdtp, int flag,
>   	}
>
>   	mmc = init_mmc_device(dev, true);
> -	if (!mmc)
> +	if (!mmc) {
> +		printf("could not switch to mmc%d\n", dev);
>   		return CMD_RET_FAILURE;
> +	}
>
>   	ret = mmc_select_hwpart(dev, part);
>   	printf("switch to partitions #%d, %s\n",
>

Reviewed-by: Stefan Roese <sr@denx.de>

Thanks,
Stefan