diff --git a/drivers/irqchip/irq-gic-v5-irs.c b/drivers/irqchip/irq-gic-v5-irs.c
index b3feb6340b59..53639e6f85bd 100644
--- a/drivers/irqchip/irq-gic-v5-irs.c
+++ b/drivers/irqchip/irq-gic-v5-irs.c
@@ -609,6 +609,10 @@ static int __init gicv5_irs_of_init_affinity(struct device_node *node,
 	u16 iaffid_mask = GENMASK(iaffid_bits - 1, 0);
 	int ret, i, ncpus, niaffids;
 
+	/* An IRS is architecturally allowed to have no cpus associated with it */
+	if (!of_property_present(node, "cpus") && !of_property_present(node, "arm,iaffids"))
+		return 0;
+
 	ncpus = of_count_phandle_with_args(node, "cpus", NULL);
 	if (ncpus < 0)
 		return -EINVAL;