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net/mlx4_core: Fix error handling in mlx4_init_port_info.

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[ Upstream commit 57f6f99fda ]

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: 096335b3f9 ("mlx4_core: Allow dynamic MTU configuration for IB ports")
Signed-off-by: Tarick Bedeir <tarick@google.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tarick Bedeir
2018-05-13 16:38:45 -07:00
committed by Greg Kroah-Hartman
parent 2272cdd5d5
commit 97b7270c3d
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/mellanox/mlx4/main.c
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@@ -2983,6 +2983,7 @@ static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
mlx4_err(dev, "Failed to create file for port %d\n", port);
devlink_port_unregister(&info->devlink_port);
info->port = -1;
return err;
}
sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
@@ -3004,9 +3005,10 @@ static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
&info->port_attr);
devlink_port_unregister(&info->devlink_port);
info->port = -1;
return err;
}
return err;
return 0;
}
static void mlx4_cleanup_port_info(struct mlx4_port_info *info)