diff --git a/drivers/leds/leds-st1202.c b/drivers/leds/leds-st1202.c
index 2ecd36aae336..168df5ecf27b 100644
--- a/drivers/leds/leds-st1202.c
+++ b/drivers/leds/leds-st1202.c
@@ -279,13 +279,19 @@ static int st1202_dt_init(struct st1202_chip *chip)
 {
 	struct device *dev = &chip->client->dev;
 	struct st1202_led *led;
-	int err, reg;
+	int err;
+	u32 reg;
 
 	for_each_available_child_of_node_scoped(dev_of_node(dev), child) {
 		err = of_property_read_u32(child, "reg", &reg);
 		if (err)
 			return dev_err_probe(dev, err, "Invalid register\n");
 
+		if (reg >= ST1202_MAX_LEDS)
+			return dev_err_probe(dev, -EINVAL,
+					"LED reg %u out of range [0, %d]\n",
+					reg, ST1202_MAX_LEDS - 1);
+
 		led = &chip->leds[reg];
 		led->is_active = true;
 		led->fwnode = of_fwnode_handle(child);