diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index 105701a..ee568c8 100644
--- a/drivers/gpio/pl061.c
+++ b/drivers/gpio/pl061.c
@@ -164,7 +164,7 @@
 	unsigned long flags;
 	u8 gpiois, gpioibe, gpioiev;
 
-	if (offset < 0 || offset > PL061_GPIO_NR)
+	if (offset < 0 || offset >= PL061_GPIO_NR)
 		return -EINVAL;
 
 	spin_lock_irqsave(&chip->irq_lock, flags);