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| author | Vadim Pasternak | 2019-05-18 17:58:28 +0200 |
|---|---|---|
| committer | David S. Miller | 2019-05-18 22:13:40 +0200 |
| commit | c52ecff7e6439ca8c9b03282e8869a005aa94831 (patch) | |
| tree | cffa70b715b8591ee1c7b6b362ea942779839f0d /drivers/net/ethernet/mellanox/mlxsw/core.h | |
| parent | vsock/virtio: Initialize core virtio vsock before registering the driver (diff) | |
| download | kernel-qcow2-linux-c52ecff7e6439ca8c9b03282e8869a005aa94831.tar.gz kernel-qcow2-linux-c52ecff7e6439ca8c9b03282e8869a005aa94831.tar.xz kernel-qcow2-linux-c52ecff7e6439ca8c9b03282e8869a005aa94831.zip | |
mlxsw: core: Prevent QSFP module initialization for old hardware
Old Mellanox silicons, like switchx-2, switch-ib do not support reading
QSFP modules temperature through MTMP register. Attempt to access this
register on systems equipped with the this kind of silicon will cause
initialization flow failure.
Test for hardware resource capability is added in order to distinct
between old and new silicon - old silicons do not have such capability.
Fixes: 6a79507cfe94 ("mlxsw: core: Extend thermal module with per QSFP module thermal zones")
Fixes: 5c42eaa07bd0 ("mlxsw: core: Extend hwmon interface with QSFP module temperature attributes")
Reported-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/core.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index 917be621c904..e3832cb5bdda 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -28,6 +28,8 @@ unsigned int mlxsw_core_max_ports(const struct mlxsw_core *mlxsw_core); void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core); +bool mlxsw_core_res_query_enabled(const struct mlxsw_core *mlxsw_core); + int mlxsw_core_driver_register(struct mlxsw_driver *mlxsw_driver); void mlxsw_core_driver_unregister(struct mlxsw_driver *mlxsw_driver); |