Re: [PATCH 02/29] IB/mlx4: Improve another size determination in mlx4_ib_alloc_pv_bufs()

From: Majd Dibbiny
Date: Sun Feb 19 2017 - 12:06:36 EST



> On Feb 18, 2017, at 10:49 PM, SF Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx> wrote:
>
> From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> Date: Fri, 17 Feb 2017 20:05:38 +0100
>
> Replace the specification of a data structure by a pointer dereference
> as the parameter for the operator "sizeof" to make the corresponding size
> determination a bit safer according to the Linux coding style convention.
>
> Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> ---
> drivers/infiniband/hw/mlx4/mad.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
> index 61bd81baeb29..858da8746d49 100644
> --- a/drivers/infiniband/hw/mlx4/mad.c
> +++ b/drivers/infiniband/hw/mlx4/mad.c
> @@ -1607,7 +1607,7 @@ static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx,
> return -ENOMEM;
>
> tun_qp->tx_ring = kcalloc(MLX4_NUM_TUNNEL_BUFS,
> - sizeof (struct mlx4_ib_tun_tx_buf),
> + sizeof(*tun_qp->tx_ring),
> GFP_KERNEL);
> if (!tun_qp->tx_ring) {
> kfree(tun_qp->ring);
> --
> 2.11.1
>
> --
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Thanks,
Reviewed-by: Majd Dibbiny
<majd@xxxxxxxxxxxx>