+ /* fall-thru */
+ case e1000_pchlan:
+ if (hw->phy.type == e1000_phy_82578) {
+ ret_val = e1000_link_stall_workaround_hv(hw);
+ if (ret_val)
+ goto out;
+ }
+
+ /*
+ * Workaround for PCHx parts in half-duplex:
+ * Set the number of preambles removed from the packet
+ * when it is passed from the PHY to the MAC to prevent
+ * the MAC from misinterpreting the packet type.
+ */
+ e1e_rphy(hw, HV_KMRN_FIFO_CTRLSTA, &phy_reg);
+ phy_reg &= ~HV_KMRN_FIFO_CTRLSTA_PREAMBLE_MASK;
+
+ if ((er32(STATUS) & E1000_STATUS_FD) != E1000_STATUS_FD)
+ phy_reg |= (1 << HV_KMRN_FIFO_CTRLSTA_PREAMBLE_SHIFT);
+
+ e1e_wphy(hw, HV_KMRN_FIFO_CTRLSTA, phy_reg);
+ break;
+ default:
+ break;