linux-kernel - Re: [PATCH v2] net/mlx4_core: Fix error handling in mlx4_init_port

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Message-ID: <20180514062109.GK10381@mtr-leonro.mtl.com>
Date:   Mon, 14 May 2018 09:21:09 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Tarick Bedeir <tarick@...gle.com>
Cc:     tariqt@...lanox.com, gthelen@...gle.com, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net/mlx4_core: Fix error handling in
 mlx4_init_port_info.

On Sun, May 13, 2018 at 04:38:45PM -0700, Tarick Bedeir wrote:
> Avoid exiting the function with a lingering sysfs file (if the first
> call to device_create_file() fails while the second succeeds), and avoid
> calling devlink_port_unregister() twice.
>
> In other words, either mlx4_init_port_info() succeeds and returns zero, or
> it fails, returns non-zero, and requires no cleanup.
>
> Fixes: 096335b3f983 ("mlx4_core: Allow dynamic MTU configuration for IB
> ports")

Please don't break "Fixes" lines, it complicates "grep".

IMHO, general cleanup exit point is needed in this function (goto ...),
but your fix is good enough too. Thanks for doing it.

Reviewed-by: Leon Romanovsky <leonro@...lanox.com>

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