| From 01284dbae3d4711b67b1dfd230c45d54b5049af0 Mon Sep 17 00:00:00 2001 |
| From: Heiner Kallweit <hkallweit1@gmail.com> |
| Date: Fri, 1 Nov 2019 00:10:21 +0100 |
| Subject: [PATCH] r8169: fix wrong PHY ID issue with RTL8168dp |
| |
| commit 62bdc8fd1c21d4263ebd18bec57f82532d09249f upstream. |
| |
| 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: Paul Gortmaker <paul.gortmaker@windriver.com> |
| |
| diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c |
| index 36261b2959b4..a2ff23f0288f 100644 |
| --- a/drivers/net/ethernet/realtek/r8169.c |
| +++ b/drivers/net/ethernet/realtek/r8169.c |
| @@ -1006,6 +1006,10 @@ static int r8168dp_2_mdio_read(struct rtl8169_private *tp, int reg) |
| { |
| 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); |
| -- |
| 2.7.4 |
| |
