DEVEN
pci_write_config_dword(i915->gmch.pdev, DEVEN,
pci_read_config_dword(i915->gmch.pdev, DEVEN,
pci_write_config_dword(i915->gmch.pdev, DEVEN,
pci_read_config_dword(i915->gmch.pdev, DEVEN, &temp);