diff --git a/4.18/wacom.h b/4.18/wacom.h
index 792bec17..968ca636 100644
--- a/4.18/wacom.h
+++ b/4.18/wacom.h
@@ -234,6 +234,14 @@ static inline __u32 wacom_s32tou(s32 value, __u8 n)
 	return value & (1 << (n - 1)) ? value & (~(~0U << n)) : value;
 }
 
+static inline u32 wacom_rescale(u32 value, u32 in_max, u32 out_max)
+{
+	if (in_max == 0 || out_max == 0)
+		return 0;
+	value = clamp(value, 0, in_max);
+	return DIV_ROUND_CLOSEST(value * out_max, in_max);
+}
+
 extern const struct hid_device_id wacom_ids[];
 
 void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len);
diff --git a/4.18/wacom_sys.c b/4.18/wacom_sys.c
index b41e6c4c..4880c1b0 100644
--- a/4.18/wacom_sys.c
+++ b/4.18/wacom_sys.c
@@ -1324,10 +1324,10 @@ enum led_brightness wacom_leds_brightness_get(struct wacom_led *led)
 	struct wacom *wacom = led->wacom;
 
 	if (wacom->led.max_hlv)
-		return led->hlv * LED_FULL / wacom->led.max_hlv;
+		return wacom_rescale(led->hlv, wacom->led.max_hlv, LED_FULL);
 
 	if (wacom->led.max_llv)
-		return led->llv * LED_FULL / wacom->led.max_llv;
+		return wacom_rescale(led->llv, wacom->led.max_llv, LED_FULL);
 
 	/* device doesn't support brightness tuning */
 	return LED_FULL;
@@ -1359,8 +1359,8 @@ static int wacom_led_brightness_set(struct led_classdev *cdev,
 		goto out;
 	}
 
-	led->llv = wacom->led.llv = wacom->led.max_llv * brightness / LED_FULL;
-	led->hlv = wacom->led.hlv = wacom->led.max_hlv * brightness / LED_FULL;
+	led->llv = wacom->led.llv = wacom_rescale(brightness, LED_FULL, wacom->led.max_llv);
+	led->hlv = wacom->led.hlv = wacom_rescale(brightness, LED_FULL, wacom->led.max_hlv);
 
 	wacom->led.groups[led->group].select = led->id;