linux-kernel - [PATCH 5.15 052/135] ethtool: Fix get module eeprom fallback

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Message-Id: <20220627111939.669448904@linuxfoundation.org>
Date:   Mon, 27 Jun 2022 13:20:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ivan Vecera <ivecera@...hat.com>,
        Ido Schimmel <idosch@...dia.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 052/135] ethtool: Fix get module eeprom fallback

From: Ivan Vecera <ivecera@...hat.com>

[ 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@...hat.com>
Reviewed-by: Ido Schimmel <idosch@...dia.com>
Link: https://lore.kernel.org/r/20220616160856.3623273-1-ivecera@redhat.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 net/ethtool/eeprom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ethtool/eeprom.c b/net/ethtool/eeprom.c
index 7e6b37a54add..1c94bb8ea03f 100644
--- 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;
 
-- 
2.35.1