Commit a0bcbe96 authored by Pawel Moll's avatar Pawel Moll Committed by Arnd Bergmann

bus: arm-ccn: Fix irq affinity setting on CPU migration

When PMU context is migrating between CPUs, interrupt affinity is set as
well. Only this should not happen when the CCN interrupt is not being
used at all (the driver is using a hrtimer tick instead).

Fixed now.

Cc: <stable@vger.kernel.org> # 4.2+
Signed-off-by: default avatarPawel Moll <pawel.moll@arm.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent b20519fd
......@@ -1188,7 +1188,8 @@ static int arm_ccn_pmu_cpu_notifier(struct notifier_block *nb,
break;
perf_pmu_migrate_context(&dt->pmu, cpu, target);
cpumask_set_cpu(target, &dt->cpu);
WARN_ON(irq_set_affinity(ccn->irq, &dt->cpu) != 0);
if (ccn->irq)
WARN_ON(irq_set_affinity(ccn->irq, &dt->cpu) != 0);
default:
break;
}
......
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