Re: [PATCH net-next] net/mlx4: Mark expected switch fall-through

From: Tariq Toukan
Date: Wed Jan 23 2019 - 07:29:21 EST




On 1/23/2019 10:05 AM, Gustavo A. R. Silva wrote:
> In preparation to enabling -Wimplicit-fallthrough, mark switch cases
> where we are expecting to fall through.
>
> This patch fixes the following warning:
>
> drivers/net/ethernet/mellanox/mlx4/eq.c: In function âmlx4_eq_intâ:
> drivers/net/ethernet/mellanox/mlx4/mlx4.h:219:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
> if (mlx4_debug_level) \
> ^
> drivers/net/ethernet/mellanox/mlx4/eq.c:558:4: note: in expansion of macro âmlx4_dbgâ
> mlx4_dbg(dev, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT. srq_no=0x%x, eq 0x%x\n",
> ^~~~~~~~
> drivers/net/ethernet/mellanox/mlx4/eq.c:561:3: note: here
> case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR:
> ^~~~
>
> Warning level 3 was used: -Wimplicit-fallthrough=3
>
> This patch is part of the ongoing efforts to enabling
> -Wimplicit-fallthrough.
>
> Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
> ---
> drivers/net/ethernet/mellanox/mlx4/eq.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
> index 4953c852c247..2f4201023836 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/eq.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
> @@ -558,6 +558,7 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
> mlx4_dbg(dev, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT. srq_no=0x%x, eq 0x%x\n",
> __func__, be32_to_cpu(eqe->event.srq.srqn),
> eq->eqn);
> + /* fall through */
> case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR:
> if (mlx4_is_master(dev)) {
> /* forward only to slave owning the SRQ */
>


Reviewed-by: Tariq Toukan <tariqt@xxxxxxxxxxxx>
Thanks for your patch.