Re: [PATCH] ASoC: rt1011: Mark format integer literals as unsigned

[Nick Desaulniers]

On Wed, Jun 5, 2019 at 10:13 PM Nathan Chancellor
<natechancellor@xxxxxxxxx> wrote:
>
> Clang warns:
>
> sound/soc/codecs/rt1011.c:1291:12: warning: integer literal is too large
> to be represented in type 'long', interpreting as 'unsigned long' per
> C89; this literal will have type 'long long' in C99 onwards
> [-Wc99-compat]
>                 format = 2147483648; /* 2^24 * 128 */

This number's bitpattern is a leading one followed by 31 zeros.
`format` is declared as `unsigned int`, and literals in C are signed
unless suffixed, so this patch LGTM.  Maybe a macro declaring such a
bitpattern would improve readability over the existing magic constant
and comment?
Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>

>                          ^
> sound/soc/codecs/rt1011.c:2123:13: warning: integer literal is too large
> to be represented in type 'long', interpreting as 'unsigned long' per
> C89; this literal will have type 'long long' in C99 onwards
> [-Wc99-compat]
>                         format = 2147483648; /* 2^24 * 128 */
>                                  ^
> 2 warnings generated.
>
> Mark the integer literals as unsigned explicitly so that if the kernel
> does ever bump the C standard it uses, the behavior is consitent.

s/consitent/consistent/

:set spell

:P
-- 
Thanks,
~Nick Desaulniers