From: Heiner Kallweit hkallweit1@gmail.com
[ Upstream commit 62bdc8fd1c21d4263ebd18bec57f82532d09249f ]
As reported in [0] at least one RTL8168dp version has problems establishing a link. This chip version has an integrated RTL8211b PHY, however the chip seems to report a wrong PHY ID, resulting in a wrong PHY driver (for Generic Realtek PHY) being loaded. Work around this issue by adding a hook to r8168dp_2_mdio_read() for returning the correct PHY ID.
[0] https://bbs.archlinux.org/viewtopic.php?id=246508
Fixes: 242cd9b5866a ("r8169: use phy_resume/phy_suspend") Signed-off-by: Heiner Kallweit hkallweit1@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/realtek/r8169.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -1010,6 +1010,10 @@ static int r8168dp_2_mdio_read(struct rt { int value;
+ /* Work around issue with chip reporting wrong PHY ID */ + if (reg == MII_PHYSID2) + return 0xc912; + r8168dp_2_mdio_start(tp);
value = r8169_mdio_read(tp, reg);