From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marek.vasut@gmail.com>
Date: Fri, 25 Nov 2011 09:39:35 +0100
Subject: [U-Boot] [PATCH 02/11] MIPS: board.c: fix warning if
	CONFIG_CMD_NET is not defined
In-Reply-To: <1322143076-20349-3-git-send-email-daniel.schwierzeck@googlemail.com>
References: <1322143076-20349-1-git-send-email-daniel.schwierzeck@googlemail.com>
	<1322143076-20349-3-git-send-email-daniel.schwierzeck@googlemail.com>
Message-ID: <201111250939.35663.marek.vasut@gmail.com>
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> board.c: In function 'board_init_r':
> board.c:280:8: warning: unused variable 's'
> 
> Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
> ---
>  arch/mips/lib/board.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/mips/lib/board.c b/arch/mips/lib/board.c
> index 9585db7..aac7690 100644
> --- a/arch/mips/lib/board.c
> +++ b/arch/mips/lib/board.c
> @@ -266,7 +266,6 @@ void board_init_r(gd_t *id, ulong dest_addr)
>  #ifndef CONFIG_ENV_IS_NOWHERE
>  	extern char *env_name_spec;
>  #endif
> -	char *s;
>  	bd_t *bd;
> 
>  	gd = id;
> @@ -347,7 +346,7 @@ void board_init_r(gd_t *id, ulong dest_addr)
>  	/* Initialize from environment */
>  	load_addr = getenv_ulong("loadaddr", 16, load_addr);
>  #if defined(CONFIG_CMD_NET)
> -	s = getenv("bootfile");
> +	const char *s = getenv("bootfile");
>  	if (s)
>  		copy_filename(BootFile, s, sizeof(BootFile));
>  #endif

Are you sure about this "const" thing? Also, try compiling the stuff with 
gcc4.6, it'll reveal more errors.