Name
pci_prepare_to_sleep — 
     prepare PCI device for system-wide transition into a sleep state
 
Synopsis
| int pci_prepare_to_sleep ( | struct pci_dev * dev ); | 
 
Description
   Choose the power state appropriate for the device depending on whether
   it can wake up the system and/or is power manageable by the platform
   (PCI_D3hot is the default) and put the device into that state.