linux-kernel - [PATCH net-next] ethernet: ucc_geth: Use kmemdup() rather than kmalloc+memcpy

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Message-ID: <20210523075616.14792-1-yuehaibing@huawei.com>
Date:   Sun, 23 May 2021 15:56:16 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <leoyang.li@....com>, <davem@...emloft.net>, <kuba@...nel.org>,
        <rasmus.villemoes@...vas.dk>
CC:     <netdev@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
        <linux-kernel@...r.kernel.org>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH net-next] ethernet: ucc_geth: Use kmemdup() rather than kmalloc+memcpy

Issue identified with Coccinelle.

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/net/ethernet/freescale/ucc_geth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index e0936510fa34..51206272cc25 100644
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@@ -3590,10 +3590,10 @@ static int ucc_geth_probe(struct platform_device* ofdev)
 	if ((ucc_num < 0) || (ucc_num > 7))
 		return -ENODEV;
 
-	ug_info = kmalloc(sizeof(*ug_info), GFP_KERNEL);
+	ug_info = kmemdup(&ugeth_primary_info, sizeof(*ug_info),
+			  GFP_KERNEL);
 	if (ug_info == NULL)
 		return -ENOMEM;
-	memcpy(ug_info, &ugeth_primary_info, sizeof(*ug_info));
 
 	ug_info->uf_info.ucc_num = ucc_num;
 
-- 
2.17.1