Re: Checkpatch bad Warning (Re: [PATCH] powerpc/kgdb: add kgdb_arch_set/remove_breakpoint())

From: Christophe Leroy
Date: Thu Sep 20 2018 - 10:07:03 EST


Adding MIPS arch in the loop

On 09/20/2018 01:19 PM, Christophe LEROY wrote:


Le 20/09/2018 Ã 15:13, Michael Ellerman a ÃcritÂ:
Joe Perches <joe@xxxxxxxxxxx> 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.


Yes I was thinking about doing it, but first thing is to change the way MIPS initialises it:


struct kgdb_arch arch_kgdb_ops;

int kgdb_arch_init(void)
{
ÂÂÂÂunion mips_instruction insn = {
ÂÂÂÂÂÂÂ .r_format = {
ÂÂÂÂÂÂÂÂÂÂÂ .opcode = spec_op,
ÂÂÂÂÂÂÂÂÂÂÂ .funcÂÂÂ = break_op,
ÂÂÂÂÂÂÂ }
ÂÂÂÂ};
ÂÂÂÂmemcpy(arch_kgdb_ops.gdb_bpt_instr, insn.byte, BREAK_INSTR_SIZE);


Can this be done staticaly ?

Christophe