linux-kernel - [PATCH] scsi: message: fusion: Use kmemdup instead of duplicating its function

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Message-Id: <20181206123733.59427-1-wen.yang99@zte.com.cn>
Date:   Thu, 6 Dec 2018 20:37:33 +0800
From:   Wen Yang <wen.yang99@....com.cn>
To:     Sathya Prakash <sathya.prakash@...adcom.com>,
        Chaitra P B <chaitra.basappa@...adcom.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@...adcom.com>
Cc:     MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, zhong.weidong@....com.cn,
        Wen Yang <wen.yang99@....com.cn>
Subject: [PATCH] scsi: message: fusion: Use kmemdup instead of duplicating its function

kmemdup has implemented the function that kmalloc() + memcpy().
We prefer to kmemdup rather than code opened implementation.

This issue was detected with the help of coccinelle.

Signed-off-by: Wen Yang <wen.yang99@....com.cn>
CC: Sathya Prakash <sathya.prakash@...adcom.com>
CC: Chaitra P B <chaitra.basappa@...adcom.com>
CC: Suganath Prabu Subramani <suganath-prabu.subramani@...adcom.com>
CC: MPT-FusionLinux.pdl@...adcom.com
CC: linux-scsi@...r.kernel.org
CC: linux-kernel@...r.kernel.org
---
 drivers/message/fusion/mptbase.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index ba551d8dfba4..f8ec116cb9a4 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -6001,13 +6001,12 @@ mpt_findImVolumes(MPT_ADAPTER *ioc)
 	if (mpt_config(ioc, &cfg) != 0)
 		goto out;
 
-	mem = kmalloc(iocpage2sz, GFP_KERNEL);
+	mem = kmemdup((u8 *)pIoc2, iocpage2sz, GFP_KERNEL);
 	if (!mem) {
 		rc = -ENOMEM;
 		goto out;
 	}
 
-	memcpy(mem, (u8 *)pIoc2, iocpage2sz);
 	ioc->raid_data.pIocPg2 = (IOCPage2_t *) mem;
 
 	mpt_read_ioc_pg_3(ioc);
-- 
2.19.1