ARM: 8351/1: 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 <[e-mail]>
Reviewed-by: Maxime Ripard <[e-mail]>
Signed-off-by: Will Deacon <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

arch/arm/kernel/perf_event_cpu.c

···
 
 static int of_pmu_irq_cfg(struct platform_device *pdev)
 {
-	int i;
+	int i, irq;
 	int *irqs = kcalloc(pdev->num_resources, sizeof(*irqs), GFP_KERNEL);
 
 	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;