netdev - [PATCH] sky2: only enable Vaux if capable of wakeup

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Message-ID: <20090903091625.2e6aff91@nehalam>
Date:	Thu, 3 Sep 2009 09:16:25 -0700
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	Rene Mayrhofer <rene.mayrhofer@...raltar.at>,
	David Miller <davem@...emloft.net>
Cc:	Mike McCormack <mikem@...g3k.org>, netdev@...r.kernel.org,
	Richard Leitner <leitner@...s.at>
Subject: [PATCH] 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@...tta.com>

--- a/drivers/net/sky2.c	2009-09-03 09:01:24.668473584 -0700
+++ b/drivers/net/sky2.c	2009-09-03 09:10:18.949088574 -0700
@@ -272,8 +272,9 @@ static void sky2_power_aux(struct sky2_h
 			    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));
--
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