pci_disable_device (9) - Linux Manuals
pci_disable_device: Disable PCI device after use
pci_disable_device - Disable PCI device after use
void pci_disable_device(struct pci_dev
- PCI device to be disabled
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.