diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index b8b4876..f44f05b 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -621,9 +621,12 @@
 		int gpio = -1;
 		enum of_gpio_flags flags;
 
+		button = &pdata->buttons[i++];
+
 		if (!of_find_property(pp, "gpios", NULL)) {
 			button->irq = irq_of_parse_and_map(pp, 0);
 			if (button->irq == 0) {
+				i--;
 				pdata->nbuttons--;
 				dev_warn(dev, "Found button without gpios or irqs\n");
 				continue;
@@ -640,8 +643,6 @@
 			}
 		}
 
-		button = &pdata->buttons[i++];
-
 		button->gpio = gpio;
 		button->active_low = flags & OF_GPIO_ACTIVE_LOW;