diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index fa2863567eed..5114d8007aa0 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -877,9 +877,17 @@ static int __init acpi_irq_penalty_update(char *str, int used)
  */
 void acpi_penalize_isa_irq(int irq, int active)
 {
-	if (irq >= 0)
-		acpi_irq_add_penalty(irq, active ?
-			PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING);
+	int penalty;
+
+	if (irq < 0)
+		return;
+
+	if (active)
+		penalty = PIRQ_PENALTY_ISA_USED;
+	else
+		penalty = PIRQ_PENALTY_PCI_USING;
+
+	acpi_irq_add_penalty(irq, penalty);
 }
 
 bool acpi_isa_irq_available(int irq)