diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c
index e49593437edeb3ca76844a633560193f5c2d384f..85228d308dd35b19e0ebd963f58543237b64f4cd 100644
--- a/drivers/thermal/rcar_gen3_thermal.c
+++ b/drivers/thermal/rcar_gen3_thermal.c
@@ -84,7 +84,7 @@ struct rcar_gen3_thermal_tsc {
 	struct thermal_zone_device *zone;
 	struct equation_coefs coef;
 	int tj_t;
-	int id; /* thermal channel id */
+	unsigned int id; /* thermal channel id */
 };
 
 struct rcar_gen3_thermal_priv {
@@ -398,7 +398,8 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
 	const int *ths_tj_1 = of_device_get_match_data(dev);
 	struct resource *res;
 	struct thermal_zone_device *zone;
-	int ret, i;
+	unsigned int i;
+	int ret;
 
 	/* default values if FUSEs are missing */
 	/* TODO: Read values from hardware on supported platforms */
@@ -467,7 +468,7 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
 		if (ret < 0)
 			goto error_unregister;
 
-		dev_info(dev, "TSC%d: Loaded %d trip points\n", i, ret);
+		dev_info(dev, "TSC%u: Loaded %d trip points\n", i, ret);
 	}
 
 	priv->num_tscs = i;