cns3xxx: ethernet - clean the tx ring before refilling the rx ring to reduce memory pressure

SVN-Revision: 35953
12 years ago · bd6c9d6252
parent d7a529709a
commit bd6c9d6252
1 changed files with 4 additions and 4 deletions
--- a/target/linux/cns3xxx/files/drivers/net/ethernet/cavium/cns3xxx_eth.c
+++ b/target/linux/cns3xxx/files/drivers/net/ethernet/cavium/cns3xxx_eth.c
@ -718,6 +718,10 @@ static int eth_poll(struct napi_struct *napi, int budget)
 		enable_irq(IRQ_CNS3XXX_SW_R0RXC);
 	}

+	spin_lock_bh(&tx_lock);
+	eth_complete_tx(sw);
+	spin_unlock_bh(&tx_lock);
+
 	cns3xxx_alloc_rx_buf(sw, received);

 	rx_ring->cur_index = i;
@ -725,10 +729,6 @@ static int eth_poll(struct napi_struct *napi, int budget)
 	wmb();
 	enable_rx_dma(sw);

-	spin_lock_bh(&tx_lock);
-	eth_complete_tx(sw);
-	spin_unlock_bh(&tx_lock);
-
 	return received;
 }