bus: arm-ccn: Handle correctly no-more-cpus case

[firefly-linux-kernel-4.4.55.git] / drivers / bus / arm-ccn.c

diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c
index 7d9879e166cf4c4346402cb353ef3cd002483740..cc322fbde9af69c78f85b359253ea5d8d32f3588 100644 (file)
--- a/drivers/bus/arm-ccn.c
+++ b/drivers/bus/arm-ccn.c
@@ -1184,7 +1184,7 @@ static int arm_ccn_pmu_cpu_notifier(struct notifier_block *nb,
                if (!cpumask_test_and_clear_cpu(cpu, &dt->cpu))
                        break;
                target = cpumask_any_but(cpu_online_mask, cpu);
-               if (target < 0)
+               if (target >= nr_cpu_ids)
                        break;
                perf_pmu_migrate_context(&dt->pmu, cpu, target);
                cpumask_set_cpu(target, &dt->cpu);