[PATCH] powerpc: Fix build warning

[Guenter Roeck]

On 06/23/2014 09:35 PM, Benjamin Herrenschmidt wrote:
> On Fri, 2014-06-13 at 09:38 -0700, Guenter Roeck wrote:
>> If compiled with W=1, the following warning is seen in powerpc builds.
>>
>> arch/powerpc/kernel/smp.c:750:18: warning:
>> 	type qualifiers ignored on function return type
>> static const int powerpc_smt_flags(void)
>>                   ^
>>
>> This is caused by a function returning 'const int', which doesn't
>> make sense to gcc. Drop 'const' to fix the problem.
>
> This breaks the 64-bit build:
>
> arch/powerpc/kernel/smp.c:764:2: error: initialization from incompatible pointer type [-Werror]
> arch/powerpc/kernel/smp.c:764:2: error: (near initialization for 'powerpc_topology[0].sd_flags') [-Werror]
>
> It appears that the generic definition in sched.h has this function
> defined as const int, so that needs to be fixed too along with all
> instances in all archs.
>

https://lkml.org/lkml/2014/6/12/743

Guenter