linux-kernel - Re: [PATCH 1/1] [media] V4L2: Deletion of an unnecessary check before the function call "vb2_put

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Date:	Mon, 01 Dec 2014 10:46:23 +0100
From:	Marek Szyprowski <m.szyprowski@...sung.com>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Pawel Osciak <pawel@...iak.com>, linux-media@...r.kernel.org
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH 1/1] [media] V4L2: Deletion of an unnecessary check before
 the function call "vb2_put_vma"

Hello,

On 2014-11-30 23:23, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Sun, 30 Nov 2014 23:10:51 +0100
>
> The vb2_put_vma() function tests whether its argument is NULL and then
> returns immediately. Thus the test around the call is not needed.
>
> This issue was detected by using the Coccinelle software.
>
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>

Acked-by: Marek Szyprowski <m.szyprowski@...sung.com>

> ---
>   drivers/media/v4l2-core/videobuf2-vmalloc.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
> index 3966b12..fba944e 100644
> --- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
> +++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
> @@ -154,8 +154,7 @@ static void vb2_vmalloc_put_userptr(void *buf_priv)
>   		}
>   		kfree(buf->pages);
>   	} else {
> -		if (buf->vma)
> -			vb2_put_vma(buf->vma);
> +		vb2_put_vma(buf->vma);
>   		iounmap(buf->vaddr);
>   	}
>   	kfree(buf);

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland

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