2019-01-23 08:08:01

by Gustavo A. R. Silva

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

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 ‘mlx4_eq_int’:
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 ‘mlx4_dbg’
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 <[email protected]>
---
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 */
--
2.20.1

2019-01-23 12:31:19

by Tariq Toukan

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

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 ‘mlx4_eq_int’:
> 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 ‘mlx4_dbg’
> 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 <[email protected]>
> ---
> 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 <[email protected]>
Thanks for your patch.

2019-01-23 17:11:48

by David Miller

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

From: "Gustavo A. R. Silva" <[email protected]>
Date: Wed, 23 Jan 2019 02:05:11 -0600

> 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 ?mlx4_eq_int?:
> 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 ?mlx4_dbg?
> 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 <[email protected]>

Applied.

2019-01-23 18:09:52

by Gustavo A. R. Silva

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

On 1/23/19 11:08 AM, David Miller wrote:
> From: "Gustavo A. R. Silva" <[email protected]>
> Date: Wed, 23 Jan 2019 02:05:11 -0600
>
>> 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 ?mlx4_eq_int?:
>> 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 ?mlx4_dbg?
>> 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 <[email protected]>
>
> Applied.
>

Thank you both, Tariq and David.

--
Gustavo