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e1000e: Use PCI Express Capability accessors

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Use PCI Express Capability access functions to simplify e1000e driver.

[bhelgaas: split e1000e and igb into separate patches]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jiang Liu 2012-08-20 13:30:43 -06:00 committed by Bjorn Helgaas
parent 0f49bfbd0f
commit f8c0fcacfe
1 changed files with 8 additions and 19 deletions
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27
drivers/net/ethernet/intel/e1000e/netdev.c
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@ -5570,16 +5570,15 @@ static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
*/
if (adapter->flags & FLAG_IS_QUAD_PORT) {
struct pci_dev *us_dev = pdev->bus->self;
int pos = pci_pcie_cap(us_dev);
u16 devctl;
pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
(devctl & ~PCI_EXP_DEVCTL_CERE));
pcie_capability_read_word(us_dev, PCI_EXP_DEVCTL, &devctl);
pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL,
(devctl & ~PCI_EXP_DEVCTL_CERE));
e1000_power_off(pdev, sleep, wake);
pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl);
} else {
e1000_power_off(pdev, sleep, wake);
}
@ -5593,25 +5592,15 @@ static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
#else
static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
{
int pos;
u16 reg16;
/*
* Both device and parent should have the same ASPM setting.
* Disable ASPM in downstream component first and then upstream.
*/
pos = pci_pcie_cap(pdev);
pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &reg16);
reg16 &= ~state;
pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, state);
if (!pdev->bus->self)
return;
pos = pci_pcie_cap(pdev->bus->self);
pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, &reg16);
reg16 &= ~state;
pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16);
if (pdev->bus->self)
pcie_capability_clear_word(pdev->bus->self, PCI_EXP_LNKCTL,
state);
}
#endif
static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)