netdev - Re: [PATCH mlx5-next 02/24] net/mlx5: Update cq.c to new cmd interface

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Date:   Wed, 22 Apr 2020 15:32:14 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Leon Romanovsky <leonro@...lanox.com>
Cc:     Doug Ledford <dledford@...hat.com>, linux-rdma@...r.kernel.org,
        Moshe Shemesh <moshe@...lanox.com>, netdev@...r.kernel.org,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: Re: [PATCH mlx5-next 02/24] net/mlx5: Update cq.c to new cmd
 interface

On Wed, Apr 22, 2020 at 07:49:48PM +0300, Leon Romanovsky wrote:
> >  int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
> >  			u32 *in, int inlen)
> >  {
> > -	u32 out[MLX5_ST_SZ_DW(modify_cq_out)] = {0};
> > -
> >  	MLX5_SET(modify_cq_in, in, opcode, MLX5_CMD_OP_MODIFY_CQ);
> >  	MLX5_SET(modify_cq_in, in, uid, cq->uid);
> > -	return mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
> > +	return mlx5_cmd_exec_in(dev, modify_cq, in);
> >  }
> >  EXPORT_SYMBOL(mlx5_core_modify_cq);
> >
> 
> This hunk needs this fixup:
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cq.c b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
> index 1a6f1f14da97..8379b24cb838 100644
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
> @@ -187,9 +187,11 @@ EXPORT_SYMBOL(mlx5_core_query_cq);
>  int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
>                         u32 *in, int inlen)
>  {
> +       u32 out[MLX5_ST_SZ_DW(modify_cq_out)] = {};
> +
>         MLX5_SET(modify_cq_in, in, opcode, MLX5_CMD_OP_MODIFY_CQ);
>         MLX5_SET(modify_cq_in, in, uid, cq->uid);
> -       return mlx5_cmd_exec_in(dev, modify_cq, in);
> +       return mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
>  }
>  EXPORT_SYMBOL(mlx5_core_modify_cq);

Why doesn't this one work with the helper?

Jason