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Date: Fri, 27 Apr 2018 08:20:15 -0700 From: Tarick Bedeir <tarick@...gle.com> To: tariqt@...lanox.com, gthelen@...gle.com, netdev@...r.kernel.org, linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org, tarick@...gle.com Cc: Greg Thelen <gthelen@...gle.com>, netdev@...r.kernel.org, linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org, Tarick Bedeir <tarick@...gle.com> Subject: [PATCH] net/mlx4_core: Fix error handling in mlx4_init_port_info. 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. Signed-off-by: Tarick Bedeir <tarick@...gle.com> --- drivers/net/ethernet/mellanox/mlx4/main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 4d84cab77105..e8a3a45d0b53 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -3007,6 +3007,7 @@ 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); @@ -3028,9 +3029,10 @@ 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) -- 2.17.0.441.gb46fe60e1d-goog
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