linux-kernel - Re: [PATCH] message/fusion/mptbase.c: Use kmemdup instead of memcpy and kmalloc

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Date:   Wed, 22 May 2019 04:48:33 -0700
From:   Joe Perches <joe@...ches.com>
To:     Bharath Vedartham <linux.bhar@...il.com>,
        sathya.prakash@...adcom.com, chaitra.basappa@...adcom.com
Cc:     MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] message/fusion/mptbase.c: Use kmemdup instead of memcpy
 and kmalloc

On Wed, 2019-05-22 at 15:23 +0530, Bharath Vedartham wrote:
> Replace kmalloc + memcpy with kmemdup.
> This was reported by coccinelle.
[]
> diff --git 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);

You should remove the unnecessary cast here.