openwrt/target/linux/generic/pending-5.4/740-net-sfp-remove-incomplete-100BASE-FX-and-100BASE-LX-.patch
Vladimir Markovets f032601ed7 kernel: backport workaround for Realtek RTL8672 and RTL9601C chips
Adds support for GPON SFP modules based on the Realtek RTL8672 and
RTL9601C chips, including but not limited to:
* V-SOL V2801F
* C-Data FD511GX-RM0
* OPTON GP801R
* BAUDCOM BD-1234-SFM
* CPGOS03-0490 v2.0
* Ubiquiti U-Fiber Instant
* EXOT EGS1

Signed-off-by: Vladimir Markovets <abam_a@yahoo.com>
2021-07-25 13:52:38 +02:00

53 lines
1.8 KiB
Diff

From 29cd215aaf6c2050c43e4de03aee436c16f90b96 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Thu, 21 Nov 2019 17:27:14 +0000
Subject: [PATCH 643/660] net: sfp: remove incomplete 100BASE-FX and 100BASE-LX
support
The 100BASE-FX and 100BASE-LX support assumes a PHY is present; this
is probably an incorrect assumption. In any case, sfp_parse_support()
will fail such a module. Let's stop pretending we support these
modules.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
drivers/net/phy/sfp-bus.c | 4 +---
drivers/net/phy/sfp.c | 13 +------------
2 files changed, 2 insertions(+), 15 deletions(-)
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -342,9 +342,7 @@ phy_interface_t sfp_select_interface(str
if (phylink_test(link_modes, 2500baseX_Full))
return PHY_INTERFACE_MODE_2500BASEX;
- if (id->base.e1000_base_t ||
- id->base.e100_base_lx ||
- id->base.e100_base_fx)
+ if (id->base.e1000_base_t)
return PHY_INTERFACE_MODE_SGMII;
if (phylink_test(link_modes, 1000baseX_Full))
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -1505,18 +1505,7 @@ static void sfp_sm_fault(struct sfp *sfp
static void sfp_sm_probe_for_phy(struct sfp *sfp)
{
- /* Setting the serdes link mode is guesswork: there's no
- * field in the EEPROM which indicates what mode should
- * be used.
- *
- * If it's a gigabit-only fiber module, it probably does
- * not have a PHY, so switch to 802.3z negotiation mode.
- * Otherwise, switch to SGMII mode (which is required to
- * support non-gigabit speeds) and probe for a PHY.
- */
- if (sfp->id.base.e1000_base_t ||
- sfp->id.base.e100_base_lx ||
- sfp->id.base.e100_base_fx)
+ if (sfp->id.base.e1000_base_t)
sfp_sm_probe_phy(sfp);
}