From: "Mauro S. M. Rodrigues" <maur...@linux.vnet.ibm.com> Date: Thu, 13 Jun 2019 16:25:40 -0300
> Some transceivers may comply with SFF-8472 even though they do not > implement the Digital Diagnostic Monitoring (DDM) interface described in > the spec. The existence of such area is specified by the 6th bit of byte > 92, set to 1 if implemented. > > Currently, without checking this bit, bnx2x fails trying to read sfp > module's EEPROM with the follow message: > > ethtool -m enP5p1s0f1 > Cannot get Module EEPROM data: Input/output error > > Because it fails to read the additional 256 bytes in which it is assumed > to exist the DDM data. > > This issue was noticed using a Mellanox Passive DAC PN 01FT738. The EEPROM > data was confirmed by Mellanox as correct and similar to other Passive > DACs from other manufacturers. > > Signed-off-by: Mauro S. M. Rodrigues <maur...@linux.vnet.ibm.com> Marvell folks, please review.
