diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index f4ef7c25096e69e33a52306a27c6ce4b5ccc430b..08f0c22fa9173d49bf1dcdc706c3dfb51c997213 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -403,9 +403,10 @@ static void hub_tt_kevent (struct work_struct *work)
 	struct usb_hub		*hub =
 		container_of(work, struct usb_hub, tt.kevent);
 	unsigned long		flags;
+	int			limit = 100;
 
 	spin_lock_irqsave (&hub->tt.lock, flags);
-	while (!list_empty (&hub->tt.clear_list)) {
+	while (--limit && !list_empty (&hub->tt.clear_list)) {
 		struct list_head	*temp;
 		struct usb_tt_clear	*clear;
 		struct usb_device	*hdev = hub->hdev;