[PATCH net-next 2/2] net: sfp: add quirks for OEM XGSPONST2001 and FS XGS-SFP-ONT-MACI
From: Martino Dell'Ambrogio <hidden>
Date: 2026-07-05 19:00:50
Also in:
lkml
Subsystem:
ethernet phy library, networking drivers, sff/sfp/sfp+ module support, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Russell King, Linus Torvalds
Cheap XGS-PON ONT sticks identifying as vendor "OEM", PN "XGSPONST2001" have broken TX_FAULT and LOS indicators (driven by the ONU serial passthrough wires) and need a longer T_START_UP than the SFF-8472 default. The Fiberstore XGS-SFP-ONT-MACI MAC-mode ONT stick has the same ONT-class TX_FAULT/LOS wiring and startup behaviour. Apply the existing sfp_fixup_potron handler to both, which masks both signals and bumps T_START_UP to T_START_UP_BAD_GPON. Both modules fail to space-pad the EEPROM vendor PN field past the legitimate string as SFF-8472 mandates (the XGSPONST2001 fills it with non-printable garbage), which defeats exact-length matching: sfp_strlen() cannot trim the field, so a plain SFP_QUIRK_F entry would silently never apply and the kernel would honor the spurious TX_FAULT and eventually disable the module. Match both entries as prefixes using SFP_QUIRK_F_PREFIX. Signed-off-by: Martino Dell'Ambrogio <redacted> --- drivers/net/phy/sfp.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index e7ba642..eae0699 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c@@ -555,6 +555,13 @@ static const struct sfp_quirk sfp_quirks[] = { SFP_QUIRK("FS", "GPON-ONU-34-20BI", sfp_quirk_2500basex, sfp_fixup_ignore_tx_fault), + // Fiberstore XGS-SFP-ONT-MACI is a MAC-mode XGS-PON ONT stick with + // ONT-class serial-passthrough TX_FAULT/LOS wiring and slow startup; + // mask both signals and extend T_START_UP via the potron fixup. The + // EEPROM vendor PN field is not space-padded past the legitimate + // string, so match it as a prefix. + SFP_QUIRK_F_PREFIX("FS", "XGS-SFP-ONT-MACI", sfp_fixup_potron), + SFP_QUIRK_F("HALNy", "HL-GSFP", sfp_fixup_halny_gsfp), SFP_QUIRK_F("H-COM", "SPP425H-GAB4", sfp_fixup_potron),
@@ -612,6 +619,14 @@ static const struct sfp_quirk sfp_quirks[] = { SFP_QUIRK_S("OEM", "SFP-2.5G-LH20-A", sfp_quirk_2500basex), SFP_QUIRK_F("OEM", "RTSFP-10", sfp_fixup_rollball_cc), SFP_QUIRK_F("OEM", "RTSFP-10G", sfp_fixup_rollball_cc), + + // OEM XGSPONST2001 is an XGS-PON ONT stick with broken TX_FAULT and + // LOS indicators and slow startup, just like potron. The EEPROM + // vendor PN field is filled with non-printable garbage past the + // legitimate string instead of space padding, so match it as a + // prefix. + SFP_QUIRK_F_PREFIX("OEM", "XGSPONST2001", sfp_fixup_potron), + SFP_QUIRK_F("Turris", "RTSFP-2.5G", sfp_fixup_rollball), SFP_QUIRK_F("Turris", "RTSFP-10", sfp_fixup_rollball), SFP_QUIRK_F("Turris", "RTSFP-10G", sfp_fixup_rollball),
--
2.47.3