[U-Boot] [PATCH] common: fix compiler warning on wrong printf format

[Chris Packham]

On Wed, Aug 27, 2014 at 2:02 AM, Alexey Brodkin
<Alexey.Brodkin at synopsys.com> wrote:
> bounce_buffer->len_aligned is of type "size_t", but on some arches/compilers
> "size_t" might be an alias to whether "int", "long" or their "signed/unsigned"
> flavors.
>
> So to make compiler happy we explicitly cast to "int" which is expected in
> printf for "%d" format.
>
> this fixes following warning:
> --->---
> common/bouncebuf.c: In function ‘addr_aligned’:
> common/bouncebuf.c:26:3: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘size_t’ [-Wformat=]
>    debug("Unaligned buffer length %d\n", /*(int)*/state->len);
>    ^
> --->---
>
> Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
> Cc: Vasili Galka <vvv444 at gmail.com>
> Cc: Tom Rini <trini at ti.com>
> ---
>  common/bouncebuf.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/common/bouncebuf.c b/common/bouncebuf.c
> index 9eece6d..0828d4b 100644
> --- a/common/bouncebuf.c
> +++ b/common/bouncebuf.c
> @@ -23,7 +23,7 @@ static int addr_aligned(struct bounce_buffer *state)
>
>         /* Check if length is aligned */
>         if (state->len != state->len_aligned) {
> -               debug("Unaligned buffer length %d\n", state->len);
> +               debug("Unaligned buffer length %d\n", (int)state->len);

Another way of fixing this would be to use %zu or %zd instead of %d.
Although that is a C99 addition so I'm not sure how much people care
about really old compilers.

http://www.open-std.org/jtc1/sc22/WG14/www/docs/n1256.pdf section
7.19.6.1 if anyone really cares.

>                 return 0;
>         }
>
> --
> 1.9.3
>
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