From: Ilkka Koskinen Date: Thu, 8 Jun 2023 20:37:42 +0000 (-0700) Subject: perf: arm_cspmu: Set irq affinitiy only if overflow interrupt is used X-Git-Tag: v6.3.13~381 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef0a178643a4a6f8b663228ee3d733e317bd3ef6;p=thirdparty%2Fkernel%2Fstable.git perf: arm_cspmu: Set irq affinitiy only if overflow interrupt is used [ Upstream commit 225d757012e0afa673d8c862e6fb39ed2f429b4d ] 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 Signed-off-by: Sasha Levin --- diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c index e31302ab7e37c..c1b6f4bdb04af 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.c +++ b/drivers/perf/arm_cspmu/arm_cspmu.c @@ -1230,7 +1230,8 @@ 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)