ethtool: Fix get module eeprom fallback

BugLink: https://bugs.launchpad.net/bugs/1986718
[ Upstream commit a3bb7b63813f674fb62bac321cdd897cc62de094 ]

Function fallback_set_params() checks if the module type returned
by a driver is ETH_MODULE_SFF_8079 and in this case it assumes
that buffer returns a concatenated content of page  A0h and A2h.
The check is wrong because the correct type is ETH_MODULE_SFF_8472.

Fixes: 96d971e307cc ("ethtool: Add fallback to get_module_eeprom from netlink command")
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20220616160856.3623273-1-ivecera@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/net/ethtool/eeprom.c b/net/ethtool/eeprom.c
index 7e6b37a54add3573150a0b4d90f2e16092a873cd..1c94bb8ea03f2358a1ce68c6f8f32fe2901b6ba4 100644 (file)
--- a/net/ethtool/eeprom.c
+++ b/net/ethtool/eeprom.c
@@ -36,7 +36,7 @@ static int fallback_set_params(struct eeprom_req_info *request,
        if (request->page)
                offset = request->page * ETH_MODULE_EEPROM_PAGE_LEN + offset;
 
-       if (modinfo->type == ETH_MODULE_SFF_8079 &&
+       if (modinfo->type == ETH_MODULE_SFF_8472 &&
            request->i2c_address == 0x51)
                offset += ETH_MODULE_EEPROM_PAGE_LEN * 2;