perf/smmuv3: Remove the leftover put_cpu() in error path

[ Upstream commit 8ae4bcf4821c18a8fbfa0b2c1df26c1085e9d923 ]

In smmu_pmu_probe(), there is put_cpu() in the error path,
which is wrong because we use raw_smp_processor_id() to
get the cpu ID, not get_cpu(), remove it.

While we are at it, kill 'out_cpuhp_err' altogether and
just return err if we fail to add the hotplug instance.

Acked-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/perf/arm_smmuv3_pmu.c b/drivers/perf/arm_smmuv3_pmu.c
index abcf54f..191f410 100644 (file)
--- a/drivers/perf/arm_smmuv3_pmu.c
+++ b/drivers/perf/arm_smmuv3_pmu.c
@@ -815,7 +815,7 @@ static int smmu_pmu_probe(struct platform_device *pdev)
        if (err) {
                dev_err(dev, "Error %d registering hotplug, PMU @%pa\n",
                        err, &res_0->start);
-               goto out_cpuhp_err;
+               return err;
        }
 
        err = perf_pmu_register(&smmu_pmu->pmu, name, -1);
@@ -834,8 +834,6 @@ static int smmu_pmu_probe(struct platform_device *pdev)
 
 out_unregister:
        cpuhp_state_remove_instance_nocalls(cpuhp_state_num, &smmu_pmu->node);
-out_cpuhp_err:
-       put_cpu();
        return err;
 }