[PATCH 9/9] net/txgbe: fix KR auto-negotiation

[Jiawen Wu]

Fix failure to enter auto-negotiation mode on some firmware versions for
KR NICs.

Fixes: f611dada1af8 ("net/txgbe: update link setup process of backplane NICs")
Cc: stable at dpdk.org

Signed-off-by: Jiawen Wu <jiawenwu at trustnetic.com>
---
 drivers/net/txgbe/base/txgbe_phy.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/txgbe/base/txgbe_phy.c b/drivers/net/txgbe/base/txgbe_phy.c
index 3f5229ecc2..3fb929f37a 100644
--- a/drivers/net/txgbe/base/txgbe_phy.c
+++ b/drivers/net/txgbe/base/txgbe_phy.c
@@ -1455,6 +1455,10 @@ txgbe_set_link_to_kr(struct txgbe_hw *hw, bool autoneg)
 		if (!(hw->devarg.auto_neg == 1)) {
 			wr32_epcs(hw, SR_AN_CTRL, 0);
 			wr32_epcs(hw, VR_AN_KR_MODE_CL, 0);
+		} else {
+			value = rd32_epcs(hw, TXGBE_PHY_TX_EQ_CTL1);
+			value &= ~(1 << 6);
+			wr32_epcs(hw, TXGBE_PHY_TX_EQ_CTL1, value);
 		}
 		if (hw->devarg.present == 1) {
 			value = rd32_epcs(hw, TXGBE_PHY_TX_EQ_CTL1);
-- 
2.21.0.windows.1