netdev - [PATCH net-next 2/6] net: atheros: use pci_zalloc

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Date:   Tue, 5 Jun 2018 20:28:47 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <jcliburn@...il.com>, <chris.snook@...il.com>, <benve@...co.com>,
        <jdmason@...zu.us>, <chessman@....org>, <jes@...ined-monkey.org>,
        <rahul.verma@...ium.com>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH net-next 2/6] net: atheros: use pci_zalloc_consistent

use pci_zalloc_consistent to remove unnecessary memset

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/net/ethernet/atheros/atl1e/atl1e_main.c | 2 +-
 drivers/net/ethernet/atheros/atlx/atl1.c        | 8 +++-----
 drivers/net/ethernet/atheros/atlx/atl2.c        | 5 ++---
 3 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
index 9dc6da0..41da42f 100644
--- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
+++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
@@ -829,7 +829,7 @@ static int atl1e_setup_ring_resources(struct atl1e_adapter *adapter)
 						       &adapter->ring_dma);
 	if (adapter->ring_vir_addr == NULL) {
 		netdev_err(adapter->netdev,
-			   "pci_alloc_consistent failed, size = D%d\n", size);
+			   "pci_zalloc_consistent failed, size = D%d\n", size);
 		return -ENOMEM;
 	}
 
diff --git a/drivers/net/ethernet/atheros/atlx/atl1.c b/drivers/net/ethernet/atheros/atlx/atl1.c
index b81fbf11..c72ef33 100644
--- a/drivers/net/ethernet/atheros/atlx/atl1.c
+++ b/drivers/net/ethernet/atheros/atlx/atl1.c
@@ -1069,16 +1069,14 @@ static s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
 		+ sizeof(struct stats_msg_block)
 		+ 40;
 
-	ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
-		&ring_header->dma);
+	ring_header->desc = pci_zalloc_consistent(pdev, ring_header->size,
+						  &ring_header->dma);
 	if (unlikely(!ring_header->desc)) {
 		if (netif_msg_drv(adapter))
-			dev_err(&pdev->dev, "pci_alloc_consistent failed\n");
+			dev_err(&pdev->dev, "pci_zalloc_consistent failed\n");
 		goto err_nomem;
 	}
 
-	memset(ring_header->desc, 0, ring_header->size);
-
 	/* init TPD ring */
 	tpd_ring->dma = ring_header->dma;
 	offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0;
diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c
index db4bcc5..d430dc9 100644
--- a/drivers/net/ethernet/atheros/atlx/atl2.c
+++ b/drivers/net/ethernet/atheros/atlx/atl2.c
@@ -300,11 +300,10 @@ static s32 atl2_setup_ring_resources(struct atl2_adapter *adapter)
 		adapter->txs_ring_size * 4 + 7 +	/* dword align */
 		adapter->rxd_ring_size * 1536 + 127;	/* 128bytes align */
 
-	adapter->ring_vir_addr = pci_alloc_consistent(pdev, size,
-		&adapter->ring_dma);
+	adapter->ring_vir_addr = pci_zalloc_consistent(pdev, size,
+						       &adapter->ring_dma);
 	if (!adapter->ring_vir_addr)
 		return -ENOMEM;
-	memset(adapter->ring_vir_addr, 0, adapter->ring_size);
 
 	/* Init TXD Ring */
 	adapter->txd_dma = adapter->ring_dma ;
-- 
2.7.0