net/mlx5e: Remove overzealous validations in netlink EEPROM query

[ Upstream commit 970adfb76095fa719778d70a6b86030d2feb88dd ]

Unlike the legacy EEPROM callbacks, when using the netlink EEPROM query
(get_module_eeprom_by_page) the driver should not try to validate the
query parameters, but just perform the read requested by the userspace.

Recent discussion in the mailing list:
https://lore.kernel.org/netdev/20220120093051.70845141@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net/

Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index 7b16a11..fd79860 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -433,35 +433,12 @@ int mlx5_query_module_eeprom_by_page(struct mlx5_core_dev *dev,
                                     struct mlx5_module_eeprom_query_params *params,
                                     u8 *data)
 {
-       u8 module_id;
        int err;
 
        err = mlx5_query_module_num(dev, &params->module_number);
        if (err)
                return err;
 
-       err = mlx5_query_module_id(dev, params->module_number, &module_id);
-       if (err)
-               return err;
-
-       switch (module_id) {
-       case MLX5_MODULE_ID_SFP:
-               if (params->page > 0)
-                       return -EINVAL;
-               break;
-       case MLX5_MODULE_ID_QSFP:
-       case MLX5_MODULE_ID_QSFP28:
-       case MLX5_MODULE_ID_QSFP_PLUS:
-               if (params->page > 3)
-                       return -EINVAL;
-               break;
-       case MLX5_MODULE_ID_DSFP:
-               break;
-       default:
-               mlx5_core_err(dev, "Module ID not recognized: 0x%x\n", module_id);
-               return -EINVAL;
-       }
-
        if (params->i2c_address != MLX5_I2C_ADDR_HIGH &&
            params->i2c_address != MLX5_I2C_ADDR_LOW) {
                mlx5_core_err(dev, "I2C address not recognized: 0x%x\n", params->i2c_address);