Re: [PATCH 3/7] videobuf2-dma-sg.c: kvmalloc_array -> kvcalloc

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Hi Hans,

Thank you for the patch.

On Mon, May 09, 2022 at 11:15:49AM +0200, Hans Verkuil wrote:
> Fixes smatch warning:
> 
> drivers/media/common/videobuf2/videobuf2-dma-sg.c:129 vb2_dma_sg_alloc() warn: Please consider using kvcalloc instead
> 
> Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

> ---
>  drivers/media/common/videobuf2/videobuf2-dma-sg.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/media/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
> index f8a21c560ad2..fa69158a65b1 100644
> --- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c
> +++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c
> @@ -126,8 +126,7 @@ static void *vb2_dma_sg_alloc(struct vb2_buffer *vb, struct device *dev,
>  	 * there is no memory consistency guarantee, hence dma-sg ignores DMA
>  	 * attributes passed from the upper layer.
>  	 */
> -	buf->pages = kvmalloc_array(buf->num_pages, sizeof(struct page *),
> -				    GFP_KERNEL | __GFP_ZERO);
> +	buf->pages = kvcalloc(buf->num_pages, sizeof(struct page *), GFP_KERNEL);
>  	if (!buf->pages)
>  		goto fail_pages_array_alloc;
>  

-- 
Regards,

Laurent Pinchart



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