[U-Boot] [PATCH 5/7] dfu:cmd: Support for DFU u-boot command

[Marek Vasut <marex@denx.de>]

Dear Lukasz Majewski,

> Support for u-boot's command line command "dfu <interface> <dev> [list]".
> 
> Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> Cc: Marek Vasut <marex@denx.de>
> ---

[...]

> +int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
> +{
> +	char *str_env = NULL, *env_bkp = NULL;
> +	static char *s = "dfu";
> +	int ret = 0;
> +
> +	if (argc < 3)
> +		return CMD_RET_USAGE;
> +
> +	str_env = getenv("dfu_alt_info");
> +	if (str_env == NULL) {
> +		printf("%s: \"dfu_alt_info\" env variable not defined!\n",
> +		       __func__);

I was always curious if it's not possible to do something like 

puts(__func__ "rest of string");

Maybe it'd help the overhead a bit? Certainly, it's beyond the scope of this 
patchset, I'm just curious :)

> +		return CMD_RET_FAILURE;
> +	}

[...]

Best regards,
Marek Vasut