From 45003a1e251a9777a55ab46bc49f6ddf747f7f94 Mon Sep 17 00:00:00 2001
From: Wei Yongjun <weiyongjun1@huawei.com>
Date: Thu, 9 Feb 2017 15:45:42 +0000
Subject: [PATCH] w1: ds2490: use kmemdup rather than duplicating its
 implementation

Use kmemdup rather than duplicating its implementation.

Generated by: scripts/coccinelle/api/memdup.cocci

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/w1/masters/ds2490.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/w1/masters/ds2490.c b/drivers/w1/masters/ds2490.c
index 59d74d1b47a8..be77b7914fad 100644
--- a/drivers/w1/masters/ds2490.c
+++ b/drivers/w1/masters/ds2490.c
@@ -909,11 +909,10 @@ static void ds9490r_write_block(void *data, const u8 *buf, int len)
 	if (len <= 0)
 		return;
 
-	tbuf = kmalloc(len, GFP_KERNEL);
+	tbuf = kmemdup(buf, len, GFP_KERNEL);
 	if (!tbuf)
 		return;
 
-	memcpy(tbuf, buf, len);
 	ds_write_block(dev, tbuf, len);
 
 	kfree(tbuf);