arm64: perf: don't warn about missing interrupt-affinity property for PPIs

PPIs are affine by nature, so the interrupt-affinity property is not
used and therefore we shouldn't print a warning in its absence.

Reported-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 195991d..2a9cbcb 100644 (file)
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -1310,7 +1310,7 @@ static const struct of_device_id armpmu_of_device_ids[] = {
 
 static int armpmu_device_probe(struct platform_device *pdev)
 {
-       int i, *irqs;
+       int i, irq, *irqs;
 
        if (!cpu_pmu)
                return -ENODEV;
@@ -1319,6 +1319,11 @@ static int armpmu_device_probe(struct platform_device *pdev)
        if (!irqs)
                return -ENOMEM;
 
+       /* Don't bother with PPIs; they're already affine */
+       irq = platform_get_irq(pdev, 0);
+       if (irq >= 0 && irq_is_percpu(irq))
+               return 0;
+
        for (i = 0; i < pdev->num_resources; ++i) {
                struct device_node *dn;
                int cpu;