linux-kernel - Re: [PATCH] net/mlx5: Declare 'rt' as corresponding enum type

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Message-ID: <61418cb7514460e24bfcd431eee9c540e795fcbc.camel@mellanox.com>
Date:   Tue, 10 Sep 2019 17:59:31 +0000
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "austindh.kim@...il.com" <austindh.kim@...il.com>,
        "leon@...nel.org" <leon@...nel.org>
CC:     "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Mark Bloch <markb@...lanox.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Alex Vesker <valex@...lanox.com>,
        Erez Shitrit <erezsh@...lanox.com>
Subject: Re: [PATCH] net/mlx5: Declare 'rt' as corresponding enum type

On Tue, 2019-09-10 at 18:27 +0900, Austin Kim wrote:
> When building kernel with clang, we can observe below warning
> message:
> 
> drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c:1080:9:
> warning: implicit conversion from enumeration type 'enum
> mlx5_reformat_ctx_type'
> to different enumeration type 'enum mlx5dr_action_type' [-   Wenum-
> conversion]
> 	rt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;
>        			  ~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c:1082:9:
> warning: implicit conversion from enumeration type 'enum
> mlx5_reformat_ctx_type'
> to different enumeration type 'enum mlx5dr_action_type' [-   Wenum-
> conversion]
> 	rt = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
>         ~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c:1084:51:
> warning: implicit conversion from enumeration type 'enum
> mlx5dr_action_type'
> to different enumeration type 'enum mlx5_reformat_ctx_type'
> [-  Wenum-conversion]
> 	ret = mlx5dr_cmd_create_reformat_ctx(dmn->mdev, rt, data_sz,
> data,
>          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~            ^~
> 
> Declare 'rt' as corresponding enum mlx5_reformat_ctx_type type.
> 
> Signed-off-by: Austin Kim <austindh.kim@...il.com>
Hi Austin, Thanks for the patch:

We already have a similar patch queued for submission.
https://patchwork.ozlabs.org/patch/1158175/

> ---
>  drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git
> a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
> b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
> index a02f87f..7d81a77 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
> @@ -1074,7 +1074,7 @@ dr_action_create_reformat_action(struct
> mlx5dr_domain *dmn,
>  	case DR_ACTION_TYP_L2_TO_TNL_L2:
>  	case DR_ACTION_TYP_L2_TO_TNL_L3:
>  	{
> -		enum mlx5dr_action_type rt;
> +		enum mlx5_reformat_ctx_type rt;
>  
>  		if (action->action_type == DR_ACTION_TYP_L2_TO_TNL_L2)
>  			rt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;