[PATCH] dma-buf: use struct_size macro

[Daniel Vetter]

On Thu, Oct 8, 2020 at 10:10 AM Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
>
> Instead of manually calculating the structure size.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>

Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>

> ---
>  drivers/dma-buf/dma-resv.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
> index 1c8f2581cb09..bb5a42b10c29 100644
> --- a/drivers/dma-buf/dma-resv.c
> +++ b/drivers/dma-buf/dma-resv.c
> @@ -63,7 +63,7 @@ static struct dma_resv_list *dma_resv_list_alloc(unsigned int shared_max)
>  {
>         struct dma_resv_list *list;
>
> -       list = kmalloc(offsetof(typeof(*list), shared[shared_max]), GFP_KERNEL);
> +       list = kmalloc(struct_size(list, shared, shared_max), GFP_KERNEL);
>         if (!list)
>                 return NULL;
>
> --
> 2.17.1
>
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch