1 files changed, 7 insertions, 5 deletions

diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 89f3b2abfdc7..cf47805a7448 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -849,7 +849,7 @@ static int __init acpi_irq_penalty_update(char *str, int used)
                 if (irq < 0)
                         continue;
 
-                if (irq >= ACPI_MAX_IRQS)
+                if (irq >= ARRAY_SIZE(acpi_irq_penalty))
                         continue;
 
                 if (used)
@@ -872,10 +872,12 @@ static int __init acpi_irq_penalty_update(char *str, int used)
  */
 void acpi_penalize_isa_irq(int irq, int active)
 {
-        if (active)
-                acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_USED;
-        else
-                acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING;
+        if (irq >= 0 && irq < ARRAY_SIZE(acpi_irq_penalty)) {
+                if (active)
+                        acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_USED;
+                else
+                        acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING;
+        }
 }
 
 /*