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charset="utf-8" Don't try to set irq affinity if PMU doesn't have an overflow interrupt. Fixes: e37dfd65731d ("perf: arm_cspmu: Add support for ARM CoreSight PMU dr= iver") Signed-off-by: Ilkka Koskinen --- drivers/perf/arm_cspmu/arm_cspmu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/ar= m_cspmu.c index 9021d1878250..62be0956dbba 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.c +++ b/drivers/perf/arm_cspmu/arm_cspmu.c @@ -1250,7 +1250,8 @@ static struct platform_driver arm_cspmu_driver =3D { static void arm_cspmu_set_active_cpu(int cpu, struct arm_cspmu *cspmu) { cpumask_set_cpu(cpu, &cspmu->active_cpu); - WARN_ON(irq_set_affinity(cspmu->irq, &cspmu->active_cpu)); + if (cspmu->irq) + WARN_ON(irq_set_affinity(cspmu->irq, &cspmu->active_cpu)); } =20 static int arm_cspmu_cpu_online(unsigned int cpu, struct hlist_node *node) --=20 2.40.1