diff --git a/hid-lg4ff.c b/hid-lg4ff.c
index 9e6afc6..ba055b2 100644
--- a/hid-lg4ff.c
+++ b/hid-lg4ff.c
@@ -872,15 +872,15 @@ static __always_inline int lg4ff_timer(struct lg4ff_device_entry *entry)
 
 	spin_unlock_irqrestore(&entry->timer_lock, flags);
 
-	parameters[0].level = (long)parameters[0].level * gain / 0xffff;
+	parameters[0].level = (s32)parameters[0].level * (s32)gain / 0xffff;
 	parameters[1].clip = parameters[1].clip * spring_level / 100;
 	parameters[2].clip = parameters[2].clip * damper_level / 100;
 	parameters[3].clip = parameters[3].clip * friction_level / 100;
 
 	ffb_level = abs(parameters[0].level);
 	for (i = 1; i < 4; i++) {
-		parameters[i].k1 = (long)parameters[i].k1 * gain / 0xffff;
-		parameters[i].k2 = (long)parameters[i].k2 * gain / 0xffff;
+		parameters[i].k1 = (s32)parameters[i].k1 * (s32)gain / 0xffff;
+		parameters[i].k2 = (s32)parameters[i].k2 * (s32)gain / 0xffff;
 		parameters[i].clip = parameters[i].clip * gain / 0xffff;
 		ffb_level += parameters[i].clip * 0x7fff / 0xffff;
 	}