PCI_PRI_CTRL
pci_write_config_word(pdev, pri + PCI_PRI_CTRL, control);
pci_read_config_word(pdev, pri + PCI_PRI_CTRL, &control);
pci_write_config_word(pdev, pri + PCI_PRI_CTRL, control);
pci_write_config_word(pdev, pri + PCI_PRI_CTRL, control);
pci_write_config_word(pdev, pri + PCI_PRI_CTRL, control);