On 2/27/2019 8:09 AM, Robert Eshleman wrote:
> This patch replaces a kmalloc/memset(,0) call with a call to kzalloc.
> It also removes a memset(,0) call that always follows a *zalloc call.
> 
> Signed-off-by: Robert Eshleman <bobbyeshle...@gmail.com>
> ---
>   drivers/net/ethernet/mellanox/mlx4/cmd.c   | 1 -
>   drivers/net/ethernet/mellanox/mlx4/en_rx.c | 3 +--
>   2 files changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c 
> b/drivers/net/ethernet/mellanox/mlx4/cmd.c
> index e65bc3c95630..7bfa6e850e5f 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
> @@ -3307,7 +3307,6 @@ int mlx4_get_counter_stats(struct mlx4_dev *dev, int 
> counter_index,
>       if (IS_ERR(mailbox))
>               return PTR_ERR(mailbox);
>   
> -     memset(mailbox->buf, 0, sizeof(struct mlx4_counter));
>       if_stat_in_mod = counter_index;
>       if (reset)
>               if_stat_in_mod |= MLX4_QUERY_IF_STAT_RESET;
> diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c 
> b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> index 9a0881cb7f51..f55805d206ef 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> @@ -1044,7 +1044,7 @@ static int mlx4_en_config_rss_qp(struct mlx4_en_priv 
> *priv, int qpn,
>       struct mlx4_qp_context *context;
>       int err = 0;
>   
> -     context = kmalloc(sizeof(*context), GFP_KERNEL);
> +     context = kzalloc(sizeof(*context), GFP_KERNEL);
>       if (!context)
>               return -ENOMEM;
>   
> @@ -1055,7 +1055,6 @@ static int mlx4_en_config_rss_qp(struct mlx4_en_priv 
> *priv, int qpn,
>       }
>       qp->event = mlx4_en_sqp_event;
>   
> -     memset(context, 0, sizeof(*context));
>       mlx4_en_fill_qp_context(priv, ring->actual_size, ring->stride, 0, 0,
>                               qpn, ring->cqn, -1, context);
>       context->db_rec_addr = cpu_to_be64(ring->wqres.db.dma);
> 

Hi,

Thanks for your patch.
It looks good, but misses one similar point you might want to cover:

in drivers/net/ethernet/mellanox/mlx4/port.c:1780 :
memset(context, 0, sizeof(*context));

Tariq

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