diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index 46819af3b062..af279f26c407 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -650,8 +650,6 @@ static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
 
 	if (rx < budget) {
 		netif_rx_complete(mp->dev, napi);
-		wrl(mp, INT_CAUSE(mp->port_num), 0);
-		wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
 		wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
 	}
 
@@ -1796,6 +1794,7 @@ static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
 	 */
 #ifdef MV643XX_ETH_NAPI
 	if (int_cause & INT_RX) {
+		wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_RX));
 		wrl(mp, INT_MASK(mp->port_num), 0x00000000);
 		rdl(mp, INT_MASK(mp->port_num));