netdev - Re: [PATCH net-next] net: microchip: vcap: use kmemdup() to allocate memory

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Date:   Thu, 19 Jan 2023 18:04:58 -0800
From:   Jesse Brandeburg <jesse.brandeburg@...el.com>
To:     Yang Yingliang <yangyingliang@...wei.com>, <netdev@...r.kernel.org>
CC:     <lars.povlsen@...rochip.com>, <Steen.Hegelund@...rochip.com>,
        <daniel.machon@...rochip.com>, <UNGLinuxDriver@...rochip.com>,
        <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>
Subject: Re: [PATCH net-next] net: microchip: vcap: use kmemdup() to allocate
 memory

On 1/19/2023 1:22 AM, Yang Yingliang wrote:
> Use kmemdup() helper instead of open-coding to simplify
> the code when allocating newckf and newcaf.
> 
> Generated by: scripts/coccinelle/api/memdup.cocci
> 
> Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
> ---
>   drivers/net/ethernet/microchip/vcap/vcap_api.c | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)

I don't like kmemdup much as you have to be very careful to make sure 
the original memory is freed in the error case. However this code seems 
like it works correctly since it was already having to free the source 
memory earlier.

Reviewed-by: Jesse Brandeburg <jesse.brandeburg@...el.com>