diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index bff1354..b723f4d 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -2108,6 +2108,8 @@
 	}
 	for(i = 0; i < E100_TEST_LEN; i++)
 		test->flags |= data[i] ? ETH_TEST_FL_FAILED : 0;
+
+	msleep_interruptible(4 * 1000);
 }
 
 static int e100_phys_id(struct net_device *netdev, u32 data)