Commit a0bcbe96 authored Oct 15, 2015 by Pawel Moll Committed by Arnd Bergmann Oct 15, 2015

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: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

parent b20519fd

drivers/bus/arm-ccn.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1188,6 +1188,7 @@ 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);
		if (ccn->irq)
		WARN_ON(irq_set_affinity(ccn->irq, &dt->cpu) != 0);
		default:
		break;

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