powerpc: fix -Wimplicit-fallthrough

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.

Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://github.com/ClangBuiltLinux/linux/issues/236
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 38ae593..e9d4eb6 100644 (file)
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -355,6 +355,7 @@ static int __init prom_strtobool(const char *s, bool *res)
                default:
                        break;
                }
+               break;
        default:
                break;
        }

diff --git a/arch/powerpc/kernel/uprobes.c b/arch/powerpc/kernel/uprobes.c
index d200e7d..e8a6371 100644 (file)
--- a/arch/powerpc/kernel/uprobes.c
+++ b/arch/powerpc/kernel/uprobes.c
@@ -141,6 +141,7 @@ int arch_uprobe_exception_notify(struct notifier_block *self,
        case DIE_SSTEP:
                if (uprobe_post_sstep_notifier(regs))
                        return NOTIFY_STOP;
+               break;
        default:
                break;
        }

diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c
index 7b25548..e106909 100644 (file)
--- a/arch/powerpc/perf/imc-pmu.c
+++ b/arch/powerpc/perf/imc-pmu.c
@@ -1500,6 +1500,7 @@ static int update_pmu_ops(struct imc_pmu *pmu)
                pmu->pmu.stop = trace_imc_event_stop;
                pmu->pmu.read = trace_imc_event_read;
                pmu->attr_groups[IMC_FORMAT_ATTR] = &trace_imc_format_group;
+               break;
        default:
                break;
        }