linux-kernel - Re: Checkpatch bad Warning (Re: [PATCH] powerpc/kgdb: add kgdb_arch_set/remove

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Date:   Thu, 20 Sep 2018 23:13:43 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Joe Perches <joe@...ches.com>,
        Christophe Leroy <christophe.leroy@....fr>,
        Andy Whitcroft <apw@...onical.com>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: Checkpatch bad Warning (Re: [PATCH] powerpc/kgdb: add kgdb_arch_set/remove_breakpoint())

Joe Perches <joe@...ches.com> writes:

> On Tue, 2018-09-18 at 09:33 +0000, Christophe Leroy wrote:
>> On the below patch, checkpatch reports
>> 
>> WARNING: struct kgdb_arch should normally be const
>> #127: FILE: arch/powerpc/kernel/kgdb.c:480:
>> +struct kgdb_arch arch_kgdb_ops;
>> 
>> But when I add 'const', I get compilation failure
>
> So don't add const.
>
> checkpatch is stupid.  You are not.
>
> _Always_ take checkpatch bleats with very
> large grains of salt.
>
> Perhaps send a patch to remove kgbd_arch
> from scripts/const_structs.checkpatch as
> it seems not ever to be const.

I think it could/should be const though, it just requires updating all
arches.

cheers