diff --git a/[refs] b/[refs]
index dda58121d99a..c47a79baa364 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ed5c2b0b78e5467f7948bef92b21f3c76823f392
+refs/heads/master: cbd006cb7d4e7b76c6febf7f51e970bced132914
diff --git a/trunk/drivers/net/e1000e/ethtool.c b/trunk/drivers/net/e1000e/ethtool.c
index 5c6bc6ac069c..c10dc694d733 100644
--- a/trunk/drivers/net/e1000e/ethtool.c
+++ b/trunk/drivers/net/e1000e/ethtool.c
@@ -1249,6 +1249,7 @@ static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
 	u32 ctrl_reg = 0;
 	u32 stat_reg = 0;
 	u16 phy_reg = 0;
+	s32 ret_val = 0;
 
 	hw->mac.autoneg = 0;
 
@@ -1308,7 +1309,13 @@ static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
 	case e1000_phy_82577:
 	case e1000_phy_82578:
 		/* Workaround: K1 must be disabled for stable 1Gbps operation */
+		ret_val = hw->phy.ops.acquire(hw);
+		if (ret_val) {
+			e_err("Cannot setup 1Gbps loopback.\n");
+			return ret_val;
+		}
 		e1000_configure_k1_ich8lan(hw, false);
+		hw->phy.ops.release(hw);
 		break;
 	case e1000_phy_82579:
 		/* Disable PHY energy detect power down */