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-rw-r--r--drivers/net/phy/phy.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 7c0eaec513..4ea74811c7 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -333,7 +333,15 @@ int genphy_parse_link(struct phy_device *phydev)
} else if (lpa & LPA_10FULL)
phydev->duplex = DUPLEX_FULL;
- if (mii_reg & BMSR_ESTATEN)
+ /*
+ * Extended status may indicate that the PHY supports
+ * 1000BASE-T/X even though the 1000BASE-T registers
+ * are missing. In this case we can't tell whether the
+ * peer also supports it, so we only check extended
+ * status if the 1000BASE-T registers are actually
+ * missing.
+ */
+ if ((mii_reg & BMSR_ESTATEN) && !(mii_reg & BMSR_ERCAP))
estatus = phy_read(phydev, MDIO_DEVAD_NONE,
MII_ESTATUS);
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