diff --git a/drivers/isp116x-hcd.c b/drivers/isp116x-hcd.c
index d57b8ece2e..8e2bc7adcc 100644
--- a/drivers/isp116x-hcd.c
+++ b/drivers/isp116x-hcd.c
@@ -550,6 +550,7 @@ static int isp116x_interrupt(struct isp116x *isp116x)
 
 	if (irqstat & HCuPINT_ATL) {
 		DBG(">>>>>> HCuPINT_ATL <<<<<<");
+		udelay(500);
 		ret = 1;
 	}