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cxgb4: Use PCI Express Capability accessors 

Use PCI Express Capability access functions to simplify cxgb4 driver.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Jiang Liu 2012-08-20 13:53:19 -06:00 committed by Bjorn Helgaas
parent c772b44e32
commit e5c8ae5fca
2 changed files with 3 additions and 13 deletions
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10
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -3694,15 +3694,7 @@ static void __devinit print_port_info(const struct net_device *dev)
static void __devinit enable_pcie_relaxed_ordering(struct pci_dev *dev)
{
u16 v;
int pos;
pos = pci_pcie_cap(dev);
if (pos > 0) {
pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &v);
v |= PCI_EXP_DEVCTL_RELAX_EN;
pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, v);
}
pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN);
}
/*

6
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
View File

@ -2741,11 +2741,9 @@ static void __devinit get_pci_mode(struct adapter *adapter,
struct pci_params *p)
{
u16 val;
u32 pcie_cap = pci_pcie_cap(adapter->pdev);
if (pcie_cap) {
pci_read_config_word(adapter->pdev, pcie_cap + PCI_EXP_LNKSTA,
&val);
if (pci_is_pcie(adapter->pdev)) {
pcie_capability_read_word(adapter->pdev, PCI_EXP_LNKSTA, &val);
p->speed = val & PCI_EXP_LNKSTA_CLS;
p->width = (val & PCI_EXP_LNKSTA_NLW) >> 4;
}