net: phy: deal properly with autoneg incomplete in genphy_c45_read_lpa
authorHeiner Kallweit <hkallweit1@gmail.com>
Sun, 31 Mar 2019 17:54:07 +0000 (19:54 +0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 2 Apr 2019 20:16:17 +0000 (13:16 -0700)
commit372fcc1b8b66148367af8374d09d48b6a0385faf
treeb5bf6c846595526713022e0ee9f82bc05907f9e9
parent5d237a07f131938e3e35635d483397a0ef0901e6
net: phy: deal properly with autoneg incomplete in genphy_c45_read_lpa

The link partner advertisement registers are not guaranteed to contain
valid values if autoneg is incomplete. Therefore, if
MDIO_AN_STAT1_COMPLETE isn't set, let's clear all link partner
capability bits. This also avoids unnecessary register reads if link
is down and phylib is in polling mode.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/phy/phy-c45.c