From: Shyam Saini <mayhs11saini@gmail.com>
Date: Fri, 23 Dec 2016 19:14:58 +0000 (+0530)
Subject: net: Use kmemdup instead of kmalloc and memcpy
X-Git-Tag: v4.11-rc1~94^2~146
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=801822d1beea4f11a38df991b420ca917f6a917b;p=karo-tx-linux.git

net: Use kmemdup instead of kmalloc and memcpy

when some other buffer is immediately copied into allocated region.
Replace calls to kmalloc followed by a memcpy with a direct
call to kmemdup.

Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 4a105006ca63..2cea022e6e6e 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1236,10 +1236,9 @@ static int virtnet_set_mac_address(struct net_device *dev, void *p)
 	struct sockaddr *addr;
 	struct scatterlist sg;
 
-	addr = kmalloc(sizeof(*addr), GFP_KERNEL);
+	addr = kmemdup(p, sizeof(*addr), GFP_KERNEL);
 	if (!addr)
 		return -ENOMEM;
-	memcpy(addr, p, sizeof(*addr));
 
 	ret = eth_prepare_mac_addr_change(dev, addr);
 	if (ret)