diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c
index 9ad01da..abac7b7 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c
@@ -131,8 +131,16 @@ nouveau_therm_update(struct nouveau_therm *therm, int mode)
 		poll = false;
 	}
 
+	nv_debug(therm, "nouveau_therm_update; mode = %d, poll = %d, "
+			"list_empty(&priv->alarm.head) = %d, duty = %d,"
+			"priv->fan->bios.fan_mode = %d\n",
+		 mode, poll, list_empty(&priv->alarm.head),
+		 duty, priv->fan->bios.fan_mode);
+
 	if (list_empty(&priv->alarm.head) && poll)
 		ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm);
+	else
+		nv_debug(therm, "nouveau_therm_update; do not schedule an update!\n");
 	spin_unlock_irqrestore(&priv->lock, flags);
 
 	if (duty >= 0) {