igb: make certain to power on optics for 82576 fiber nics

It appears that a step was missed in the initialization of 82576 fiber nics
that resulted in it not powering on the optics.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c
index f5e2e72..9b367ba 100644 (file)
--- a/drivers/net/igb/e1000_82575.c
+++ b/drivers/net/igb/e1000_82575.c
@@ -1103,6 +1103,13 @@ static s32 igb_setup_fiber_serdes_link_82575(struct e1000_hw *hw)
               E1000_CTRL_SWDPIN1;
        wr32(E1000_CTRL, reg);
 
+       /* Power on phy for 82576 fiber adapters */
+       if (hw->mac.type == e1000_82576) {
+               reg = rd32(E1000_CTRL_EXT);
+               reg &= ~E1000_CTRL_EXT_SDP7_DATA;
+               wr32(E1000_CTRL_EXT, reg);
+       }
+
        /* Set switch control to serdes energy detect */
        reg = rd32(E1000_CONNSW);
        reg |= E1000_CONNSW_ENRGSRC;