pci_disable_device(9) centos man page | unix.com

PCI_DISABLE_DEVICE(9)						Hardware Interfaces					     PCI_DISABLE_DEVICE(9)

NAME
       pci_disable_device - Disable PCI device after use

SYNOPSIS
       void pci_disable_device(struct pci_dev * dev);

ARGUMENTS
       dev
	   PCI device to be disabled

DESCRIPTION
       Signal to the system that the PCI device is not in use by the system anymore. This only involves disabling PCI bus-mastering, if active.

       Note we don't actually disable the device until all callers of pci_enable_device have called pci_disable_device.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						     PCI_DISABLE_DEVICE(9)