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

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Date:   Wed, 23 Jan 2019 09:08:03 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     gustavo@...eddedor.com
Cc:     tariqt@...lanox.com, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net/mlx4: Mark expected switch fall-through

From: "Gustavo A. R. Silva" <gustavo@...eddedor.com>
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 <gustavo@...eddedor.com>

Applied.