From: Erez Alfasi ereza@mellanox.com
[ Upstream commit 135dd9594f127c8a82d141c3c8430e9e2143216a ]
Querying EEPROM high pages data for SFP module is currently not supported by our driver but is still tried, resulting in invalid FW queries.
Set the EEPROM ethtool data length to 256 for SFP module to limit the reading for page 0 only and prevent invalid FW queries.
Fixes: 7202da8b7f71 ("ethtool, net/mlx4_en: Cable info, get_module_info/eeprom ethtool support") Signed-off-by: Erez Alfasi ereza@mellanox.com Signed-off-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/en_ethtool.c | 4 +++- drivers/net/ethernet/mellanox/mlx4/port.c | 5 ----- 2 files changed, 3 insertions(+), 6 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c @@ -1930,6 +1930,8 @@ static int mlx4_en_set_tunable(struct ne return ret; }
+#define MLX4_EEPROM_PAGE_LEN 256 + static int mlx4_en_get_module_info(struct net_device *dev, struct ethtool_modinfo *modinfo) { @@ -1964,7 +1966,7 @@ static int mlx4_en_get_module_info(struc break; case MLX4_MODULE_ID_SFP: modinfo->type = ETH_MODULE_SFF_8472; - modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; + modinfo->eeprom_len = MLX4_EEPROM_PAGE_LEN; break; default: return -ENOSYS; --- a/drivers/net/ethernet/mellanox/mlx4/port.c +++ b/drivers/net/ethernet/mellanox/mlx4/port.c @@ -1960,11 +1960,6 @@ int mlx4_get_module_info(struct mlx4_dev size -= offset + size - I2C_PAGE_SIZE;
i2c_addr = I2C_ADDR_LOW; - if (offset >= I2C_PAGE_SIZE) { - /* Reset offset to high page */ - i2c_addr = I2C_ADDR_HIGH; - offset -= I2C_PAGE_SIZE; - }
cable_info = (struct mlx4_cable_info *)inmad->data; cable_info->dev_mem_address = cpu_to_be16(offset);