netdev - [net-next 02/12] e1000e: Use standard #defines for PCIe Capability ASPM fields

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Date:	Fri, 18 Jan 2013 07:04:37 -0800
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>, netdev@...r.kernel.org,
	gospo@...hat.com, sassmann@...hat.com,
	e1000-devel@...ts.sourceforge.net,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 02/12] e1000e: Use standard #defines for PCIe Capability ASPM fields

From: Bjorn Helgaas <bhelgaas@...gle.com>

Use the standard #defines for PCIe Capability ASPM fields.

Previously we used PCIE_LINK_STATE_L0S and PCIE_LINK_STATE_L1 directly, but
these are defined for the Linux ASPM interfaces, e.g.,
pci_disable_link_state(), and only coincidentally match the actual register
bits.  PCIE_LINK_STATE_CLKPM, also part of that interface, does not match
the register bit.

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
CC: e1000-devel@...ts.sourceforge.net
Acked-by: Bruce Allan <bruce.w.allan@...el.com>
Tested-by: Aaron Brown <aaron.f.brown@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 05538e6..bf2c84cf 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -5548,14 +5548,21 @@ static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
 #else
 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
 {
+	u16 aspm_ctl = 0;
+
+	if (state & PCIE_LINK_STATE_L0S)
+		aspm_ctl |= PCI_EXP_LNKCTL_ASPM_L0S;
+	if (state & PCIE_LINK_STATE_L1)
+		aspm_ctl |= PCI_EXP_LNKCTL_ASPM_L1;
+
 	/* Both device and parent should have the same ASPM setting.
 	 * Disable ASPM in downstream component first and then upstream.
 	 */
-	pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, state);
+	pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, aspm_ctl);
 
 	if (pdev->bus->self)
 		pcie_capability_clear_word(pdev->bus->self, PCI_EXP_LNKCTL,
-					   state);
+					   aspm_ctl);
 }
 #endif
 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
-- 
1.7.11.7

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