linux-kernel - [PATCH] net: ethernet: ixp4xx: Make use of dma_pool_zalloc() instead of dma_pool

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Message-ID: <20211018131630.328-1-caihuoqing@baidu.com>
Date:   Mon, 18 Oct 2021 21:16:29 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Krzysztof Halasa <khalasa@...p.pl>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] net: ethernet: ixp4xx: Make use of dma_pool_zalloc() instead of dma_pool_alloc/memset()

Replacing dma_pool_alloc/memset() with dma_pool_zalloc()
to simplify the code.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/net/ethernet/xscale/ixp4xx_eth.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/xscale/ixp4xx_eth.c b/drivers/net/ethernet/xscale/ixp4xx_eth.c
index 3e5fd952aeaa..65fdad1107fc 100644
--- a/drivers/net/ethernet/xscale/ixp4xx_eth.c
+++ b/drivers/net/ethernet/xscale/ixp4xx_eth.c
@@ -1103,10 +1103,9 @@ static int init_queues(struct port *port)
 			return -ENOMEM;
 	}
 
-	if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL,
-					      &port->desc_tab_phys)))
+	port->desc_tab = dma_pool_zalloc(dma_pool, GFP_KERNEL, &port->desc_tab_phys);
+	if (!port->desc_tab)
 		return -ENOMEM;
-	memset(port->desc_tab, 0, POOL_ALLOC_SIZE);
 	memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */
 	memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab));
 
-- 
2.25.1