From: Jiri Pirko Date: Thu, 31 Oct 2019 09:42:21 +0000 (+0200) Subject: mlxsw: spectrum: Generalize split count check X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~3423^2~263^2 X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=973b7fdb5ff17e5f19eba9103c3fcb77a01b93df;p=linux.git mlxsw: spectrum: Generalize split count check Make the check generic for any possible value, not only 2 and 4. Signed-off-by: Jiri Pirko Reviewed-by: Shalom Toledo Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 3ce48d0df37f..ea4cc2aa99e0 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -4215,9 +4215,9 @@ static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port, return -EINVAL; } - if (count != 2 && count != 4) { - netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n"); - NL_SET_ERR_MSG_MOD(extack, "Port can only be split into 2 or 4 ports"); + if (count == 1 || !is_power_of_2(count) || count > max_width) { + netdev_err(mlxsw_sp_port->dev, "Invalid split count\n"); + NL_SET_ERR_MSG_MOD(extack, "Invalid split count"); return -EINVAL; }