linux-kernel - Re: [PATCH linux-next] drm/nouveau/disp: switch to use kmemdup() helper

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Date: Mon, 8 Jan 2024 18:18:53 +0100
From: Danilo Krummrich <dakr@...hat.com>
To: yang.guang5@....com.cn
Cc: jiang.xuexin@....com.cn, chen.haonan2@....com.cn, cgel.zte@...il.com,
 lyude@...hat.com, airlied@...il.com, daniel@...ll.ch, bskeggs@...hat.com,
 keescook@...omium.org, dri-devel@...ts.freedesktop.org,
 nouveau@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 kherbst@...hat.com
Subject: Re: [PATCH linux-next] drm/nouveau/disp: switch to use kmemdup()
 helper

Hi Yang,

On 12/14/23 13:03, yang.guang5@....com.cn wrote:
> From: Yang Guang <yang.guang5@....com.cn>
> 
> Use kmemdup() helper instead of open-coding to
> simplify the code.
> 
> Signed-off-by: Chen Haonan <chen.haonan2@....com.cn>

Please add your "Signed-off-by" tag to this patch. If the above is intended to indicate
that Chan was involved in creating this patch (e.g. as co-author, reporter, etc.) please
use the corresponding tag instead. See also [1].

Once this is fixed, I'll apply the patch.

- Danilo

[1] https://www.kernel.org/doc/html/v4.17/process/submitting-patches.html#sign-your-work-the-developer-s-certificate-of-origin

> ---
>   drivers/gpu/drm/nouveau/nvif/outp.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/nouveau/nvif/outp.c b/drivers/gpu/drm/nouveau/nvif/outp.c
> index 5d3190c05250..6daeb7f0b09b 100644
> --- a/drivers/gpu/drm/nouveau/nvif/outp.c
> +++ b/drivers/gpu/drm/nouveau/nvif/outp.c
> @@ -452,13 +452,12 @@ nvif_outp_edid_get(struct nvif_outp *outp, u8 **pedid)
>   	if (ret)
>   		goto done;
> 
> -	*pedid = kmalloc(args->size, GFP_KERNEL);
> +	*pedid = kmemdup(args->data, args->size, GFP_KERNEL);
>   	if (!*pedid) {
>   		ret = -ENOMEM;
>   		goto done;
>   	}
> 
> -	memcpy(*pedid, args->data, args->size);
>   	ret = args->size;
>   done:
>   	kfree(args);