Re: [PATCH v2] x86/cpu: fix prototype warning

Borislav Petkov
2018-11-08T15:32:40Z

On Thu, Nov 08, 2018 at 04:03:18PM +0100, Borislav Petkov wrote:
> On Thu, Nov 08, 2018 at 09:12:28AM +0800, Yi Wang wrote:
> > This patch fix the following build warnings which because of missing
> > include file:
> >
> > arch/x86/kernel/cpu/cacheinfo.c:647:6: warning: no previous prototype for ‘cacheinfo_amd_init_llc_id’ [-Wmissing-prototypes]
> > arch/x86/kernel/cpu/cacheinfo.c:686:6: warning: no previous prototype for ‘cacheinfo_hygon_init_llc_id’ [-Wmissing-prototypes]
> > arch/x86/kernel/cpu/scattered.c:37:6: warning: no previous prototype for ‘init_scattered_cpuid_features’ [-Wmissing-prototypes]
> > arch/x86/kernel/cpu/scattered.c:60:5: warning: no previous prototype for ‘get_scattered_cpuid_leaf’ [-Wmissing-prototypes]
>
> That function is gone in:
>
> https://git.kernel.org/tip/43500e6f294d175602606c77bfb0d8cd4ea88b4f
>
> You probably should run your test against tip/master.
>
> Also, you should say in your commit message that this is an extra
> warning - -Wmissing-prototypes - which is not enabled by default but a
> W=1 one.

And frankly, I don't see why we should be fixing all those. So what if a
global function does't have a previous prototype declaration?!

Micha, is there anything "useful" that warning bitches about or should
we disable it?

Thx.

--
Regards/Gruss,
Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.