On Fri, 31 Jul 2020 15:31:45 +0300
Andy Shevchenko <[email protected]> wrote:

> Sparse is not happy about restricted type being assigned:
>   lib/vsprintf.c:1940:23: warning: incorrect type in assignment (different 
> base types)
>   lib/vsprintf.c:1940:23:    expected unsigned long [assigned] flags
>   lib/vsprintf.c:1940:23:    got restricted gfp_t [usertype]
> 
> Force type of flags to make sparse happy.
> 
> Signed-off-by: Andy Shevchenko <[email protected]>
> ---
>  lib/vsprintf.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/vsprintf.c b/lib/vsprintf.c
> index 90d818ef03c5..118e2727d058 100644
> --- a/lib/vsprintf.c
> +++ b/lib/vsprintf.c
> @@ -1937,7 +1937,7 @@ char *flags_string(char *buf, char *end, void 
> *flags_ptr,
>               names = vmaflag_names;
>               break;
>       case 'g':
> -             flags = *(gfp_t *)flags_ptr;
> +             flags = (__force typeof(flags))(*(gfp_t *)flags_ptr);

Do we really need to say "typeof(flags)" ? What about simply using
flags' type?

                flags = (__force unsigned long)(*(gfp_t *)flags_ptr);

?

I mean, it's not like flags is a global. It's defined a few lines above.

-- Steve


>               names = gfpflag_names;
>               break;
>       default:

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