4.9-stable review patch. If anyone has any objections, please let me know.
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From: Tarick Bedeir tarick@google.com
[ 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 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 --- 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)