linux-kernel - Re: [PATCH net-next] ieee802154: ca8210: Use kmemdup instead of duplicating it in ca8210_test_int_driver

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Date:   Mon, 10 Sep 2018 10:08:09 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <davem@...emloft.net>, <h.morris@...coda.com>,
        <alex.aring@...il.com>, <stefan@...enfreihafen.org>
CC:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-wpan@...r.kernel.org>
Subject: Re: [PATCH net-next] ieee802154: ca8210: Use kmemdup instead of
 duplicating it in ca8210_test_int_driver_write

sorry, Pls ignore this duplicated patch.

On 2018/9/6 11:42, YueHaibing wrote:
> Replace calls to kmalloc followed by a memcpy with a direct call tokmemdup.
> 
> Patch found using coccinelle.
> 
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
>  drivers/net/ieee802154/ca8210.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c
> index 58299fb..e21279d 100644
> --- a/drivers/net/ieee802154/ca8210.c
> +++ b/drivers/net/ieee802154/ca8210.c
> @@ -634,10 +634,9 @@ static int ca8210_test_int_driver_write(
>  	for (i = 0; i < len; i++)
>  		dev_dbg(&priv->spi->dev, "%#03x\n", buf[i]);
>  
> -	fifo_buffer = kmalloc(len, GFP_KERNEL);
> +	fifo_buffer = kmemdup(buf, len, GFP_KERNEL);
>  	if (!fifo_buffer)
>  		return -ENOMEM;
> -	memcpy(fifo_buffer, buf, len);
>  	kfifo_in(&test->up_fifo, &fifo_buffer, 4);
>  	wake_up_interruptible(&priv->test.readq);
>  
>