4.9-stable review patch. If anyone has any objections, please let me know.
------------------ From: Tarick Bedeir <[email protected]> [ Upstream commit 57f6f99fdad9984801cde05c1db68fe39b474a10 ] 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") Signed-off-by: Tarick Bedeir <[email protected]> Reviewed-by: Leon Romanovsky <[email protected]> Reviewed-by: Tariq Toukan <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/net/ethernet/mellanox/mlx4/main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -2983,6 +2983,7 @@ static int mlx4_init_port_info(struct ml 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 ml &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)
