From 225d757012e0afa673d8c862e6fb39ed2f429b4d Mon Sep 17 00:00:00 2001 From: Ilkka Koskinen Date: Thu, 8 Jun 2023 13:37:42 -0700 Subject: perf: arm_cspmu: Set irq affinitiy only if overflow interrupt is used 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 driver") Signed-off-by: Ilkka Koskinen Link: https://lore.kernel.org/r/20230608203742.3503486-1-ilkka@os.amperecomputing.com Signed-off-by: Will Deacon --- 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/arm_cspmu.c index a3f1c410b417..d0572162f063 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.c +++ b/drivers/perf/arm_cspmu/arm_cspmu.c @@ -1232,7 +1232,8 @@ static struct platform_driver arm_cspmu_driver = { 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)); } static int arm_cspmu_cpu_online(unsigned int cpu, struct hlist_node *node) -- cgit v1.2.3