[PATCH] powerpc: change rheap functions to use long integers instead of pointers

[Scott Wood]

Timur Tabi wrote:
> Scott's right.  rh_attach_region() never supported anything above 
> "(unsigned long) -MAXERR".  Perhaps I should add a check for that?
> 
>     /* Round start up */
>     s = (s + m) & ~m;
> 
> +    if (IS_ERR_VALUE(s))
> +        return -EINVAL;
> 
>     /* Round end down */
>     e = e & ~m;
> 
> The same patch should be applied to rh_detach_region() and 
> rh_alloc_fixed().

You should check "e" instead, and make sure that s < e.

-Scott