diff --git a/drivers/clocksource/timer-keystone.c b/drivers/clocksource/timer-keystone.c
index edacf3902e107d9ac60c84cdaba4f4ad1822213c..1cea08cf603eb30d5028e157dc8927aef4a004a9 100644
--- a/drivers/clocksource/timer-keystone.c
+++ b/drivers/clocksource/timer-keystone.c
@@ -152,7 +152,7 @@ static void __init keystone_timer_init(struct device_node *np)
 	int irq, error;
 
 	irq  = irq_of_parse_and_map(np, 0);
-	if (irq == NO_IRQ) {
+	if (!irq) {
 		pr_err("%s: failed to map interrupts\n", __func__);
 		return;
 	}