[U-Boot] [PATCH 5/6] cmd_nvedit.c: allow board-specific code before/after saving the environment

[Mike Frysinger <vapier@gentoo.org>]

On Friday 04 May 2012 18:21:31 Timur Tabi wrote:
> Introduce board_start_saveenv() and board_finish_saveenv(), two "weak"
> functions that are called before and after saving the environment.  This
> allows for board-specific functions that "prepare" the board for saving
> the environment.  This is useful if, for some reason, the non-volatile
> storage is normally unavailable (e.g. blocked via a mux).

all these board hooks are paper-cutting us to death with unused bloat

> --- a/common/cmd_nvedit.c
> +++ b/common/cmd_nvedit.c
> 
>  #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
> +
> +static int __board_start_saveenv(void)
> +{
> +	return 0;
> +}
> +int board_start_saveenv(void) __attribute__((weak,
> alias("__board_start_saveenv"))); +
> +static void __board_finish_saveenv(void)
> +{
> +}
> +void board_finish_saveenv(void) __attribute__((weak,
> alias("__board_finish_saveenv"))); +
>  int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>  {
> +	int ret;
> +
>  	printf("Saving Environment to %s...\n", env_name_spec);
> 
> -	return saveenv() ? 1 : 0;
> +	ret = board_start_saveenv();
> +	if (ret)
> +		return 0;
> +
> +	ret = saveenv() ? 1 : 0;
> +
> +	board_finish_saveenv();
> +
> +	return ret;
>  }

this is less bloat:
int board_start_saveenv(void) __attribute__((weak, alias("saveenv")));

int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	printf("Saving Environment to %s...\n", env_name_spec);
	return board_saveenv() ? 1 : 0;
}
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