drivers/net: use vzalloc()

Use vzalloc() and vzalloc_node() in net drivers

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/qlcnic/qlcnic_init.c b/drivers/net/qlcnic/qlcnic_init.c
index 0d180c6..3f97018 100644
--- a/drivers/net/qlcnic/qlcnic_init.c
+++ b/drivers/net/qlcnic/qlcnic_init.c
@@ -236,12 +236,11 @@
 	tx_ring->num_desc = adapter->num_txd;
 	tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 
-	cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
+	cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 	if (cmd_buf_arr == NULL) {
 		dev_err(&netdev->dev, "failed to allocate cmd buffer ring\n");
 		goto err_out;
 	}
-	memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
 	tx_ring->cmd_buf_arr = cmd_buf_arr;
 
 	recv_ctx = &adapter->recv_ctx;
@@ -276,13 +275,12 @@
 			break;
 		}
 		rds_ring->rx_buf_arr = (struct qlcnic_rx_buffer *)
-			vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
+			vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 		if (rds_ring->rx_buf_arr == NULL) {
 			dev_err(&netdev->dev, "Failed to allocate "
 				"rx buffer ring %d\n", ring);
 			goto err_out;
 		}
-		memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
 		INIT_LIST_HEAD(&rds_ring->free_list);
 		/*
 		 * Now go through all of them, set reference handles