[PATCH net-next 7/8] net: phy: realtek: check validity of 10GbE link-partner advertisement

Daniel Golle
2023-05-10T23:01:49Z

Only use link-partner advertisement bits for 10GbE modes if they are
actually valid. Check LOCALOK and REMOTEOK bits and clear 10GbE modes
unless both of them are set.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/net/phy/realtek.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index cde61a30ac4c..29168f98f451 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -715,6 +715,10 @@ static int rtl822x_read_status(struct phy_device *phydev)
if (lpadv < 0)
return lpadv;

+ if (!(lpadv & MDIO_AN_10GBT_STAT_REMOK) ||
+ !(lpadv & MDIO_AN_10GBT_STAT_LOCOK))
+ lpadv = 0;
+
mii_10gbt_stat_mod_linkmode_lpa_t(phydev->lp_advertising, lpadv);
}

--
2.40.0