2 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_82598.c b/drivers/net/ixgbe/ixgbe_82598.c
index e2d5343..204177d 100644
--- a/drivers/net/ixgbe/ixgbe_82598.c
+++ b/drivers/net/ixgbe/ixgbe_82598.c
@@ -510,6 +510,40 @@ static s32 ixgbe_start_mac_link_82598(struct ixgbe_hw *hw,
 }
 
 /**
+ *  ixgbe_validate_link_ready - Function looks for phy link
+ *  @hw: pointer to hardware structure
+ *
+ *  Function indicates success when phy link is available. If phy is not ready
+ *  within 5 seconds of MAC indicating link, the function returns error.
+ **/
+static s32 ixgbe_validate_link_ready(struct ixgbe_hw *hw)
+{
+	u32 timeout;
+	u16 an_reg;
+
+	if (hw->device_id != IXGBE_DEV_ID_82598AT2)
+		return 0;
+
+	for (timeout = 0;
+	     timeout < IXGBE_VALIDATE_LINK_READY_TIMEOUT; timeout++) {
+		hw->phy.ops.read_reg(hw, MDIO_STAT1, MDIO_MMD_AN, &an_reg);
+
+		if ((an_reg & MDIO_AN_STAT1_COMPLETE) &&
+		    (an_reg & MDIO_STAT1_LSTATUS))
+			break;
+
+		msleep(100);
+	}
+
+	if (timeout == IXGBE_VALIDATE_LINK_READY_TIMEOUT) {
+		hw_dbg(hw, "Link was indicated but link is down\n");
+		return IXGBE_ERR_LINK_SETUP;
+	}
+
+	return 0;
+}
+
+/**
  *  ixgbe_check_mac_link_82598 - Get link/speed status
  *  @hw: pointer to hardware structure
  *  @speed: pointer to link speed
@@ -589,6 +623,10 @@ static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw,
 	else
 		*speed = IXGBE_LINK_SPEED_1GB_FULL;
 
+	if ((hw->device_id == IXGBE_DEV_ID_82598AT2) && (*link_up == true) &&
+	    (ixgbe_validate_link_ready(hw) != 0))
+		*link_up = false;
+
 	/* if link is down, zero out the current_mode */
 	if (*link_up == false) {
 		hw->fc.current_mode = ixgbe_fc_none;
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index f3e8d52..84650c6 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -841,6 +841,8 @@
 #define IXGBE_MPVC      0x04318
 #define IXGBE_SGMIIC    0x04314
 
+#define IXGBE_VALIDATE_LINK_READY_TIMEOUT 50
+
 /* Omer CORECTL */
 #define IXGBE_CORECTL           0x014F00
 /* BARCTRL */