linux-kernel - Re: [PATCH 3/3] powerpc: fix -Wimplicit-fallthrough

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Date:   Wed, 18 Nov 2020 10:46:32 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Nick Desaulniers <ndesaulniers@...gle.com>,
        "Gustavo A . R . Silva" <gustavoars@...nel.org>,
        Nathan Chancellor <natechancellor@...il.com>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        clang-built-linux@...glegroups.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: Re: [PATCH 3/3] powerpc: fix -Wimplicit-fallthrough

Nick Desaulniers <ndesaulniers@...gle.com> writes:
> The "fallthrough" pseudo-keyword was added as a portable way to denote
> intentional fallthrough. Clang will still warn on cases where there is a
> fallthrough to an immediate break. Add explicit breaks for those cases.
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/236
> Signed-off-by: Nick Desaulniers <ndesaulniers@...gle.com>
> ---
>  arch/powerpc/kernel/prom_init.c | 1 +
>  arch/powerpc/kernel/uprobes.c   | 1 +
>  arch/powerpc/perf/imc-pmu.c     | 1 +
>  3 files changed, 3 insertions(+)

Acked-by: Michael Ellerman <mpe@...erman.id.au>

cheers