e1000_write_pci_cfg
void e1000_write_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value);
e1000_write_pci_cfg(hw, E1000_PCI_PMCSR, &pci_word);
e1000_write_pci_cfg(hw, E1000_PCI_PMCSR, &pci_word);
e1000_write_pci_cfg(hw, PCIX_COMMAND_REGISTER, &pcix_cmd);