diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 5bf8dd6198bb..16d3a6467d14 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -610,7 +610,7 @@ static int max310x_set_ref_clk(struct device *dev, struct max310x_port *s,
 
 	/* Wait for crystal */
 	if (xtal) {
-		unsigned int val;
+		unsigned int val = 0;
 		msleep(10);
 		regmap_read(s->regmap, MAX310X_STS_IRQSTS_REG, &val);
 		if (!(val & MAX310X_STS_CLKREADY_BIT)) {