[U-Boot-Users] [PATCH] common/cmd_mii.c: Add sanity argc check

[Shinya Kuribayashi]

Shinya Kuribayashi wrote:
> If type mii command without arguments, we suffer from uninitialized argv[]
> entries; for example we MIPS get stuck by TLB error.
> 
> Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi at necel.com>
> ---
> 
>  common/cmd_mii.c |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)
> 
> diff --git a/common/cmd_mii.c b/common/cmd_mii.c
> index b771322..b99bd06 100644
> --- a/common/cmd_mii.c
> +++ b/common/cmd_mii.c
> @@ -438,6 +438,11 @@ int do_mii (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
>  	int		rcode = 0;
>  	char		*devname;
>  
> +	if (argc < 2) {
> +		printf("Usage:\n%s\n", cmdtp->usage);
> +		return 1;
> +	}
> +
>  #if defined(CONFIG_8xx) || defined(CONFIG_MCF532x)
>  	mii_init ();
>  #endif

By the way, cmd_mii.c has _another_ do_mii() which is enabled for
CONFIG_TERSE_MII user. But it seems there is no CONFIG_TERSE_MII user.
I just wonder that do_mii() is in the transition to the newer version.

thanks,

  Shinya