sky2: only enable Vaux if capable of wakeup

While perusing vendor driver, I saw that it did not enable the Vaux
power unless device was able to wake from lan for D3cold.
This might help for Rene's power issue.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index d1f3b46a2b08..bab591b418df 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -272,8 +272,9 @@ static void sky2_power_aux(struct sky2_hw *hw)
                             Y2_CLK_GAT_LNK1_DIS | Y2_PCI_CLK_LNK2_DIS |
                             Y2_COR_CLK_LNK2_DIS | Y2_CLK_GAT_LNK2_DIS);
 
-        /* switch power to VAUX */
-        if (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL)
+        /* switch power to VAUX if supported and PME from D3cold */
+        if ( (sky2_read32(hw, B0_CTST) & Y2_VAUX_AVAIL) &&
+             pci_pme_capable(hw->pdev, PCI_D3cold))
                 sky2_write8(hw, B0_POWER_CTRL,
                             (PC_VAUX_ENA | PC_VCC_ENA |
                              PC_VAUX_ON | PC_VCC_OFF));