centos man page for pci_release_regions

PCI_RELEASE_REGIONS(9)						Hardware Interfaces					    PCI_RELEASE_REGIONS(9)

NAME
       pci_release_regions - Release reserved PCI I/O and memory resources

SYNOPSIS
       void pci_release_regions(struct pci_dev * pdev);

ARGUMENTS
       pdev
	   PCI device whose resources were previously reserved by pci_request_regions

DESCRIPTION
       Releases all PCI I/O and memory resources previously reserved by a successful call to pci_request_regions. Call this function only after
       all use of the PCI regions has ceased.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						    PCI_RELEASE_REGIONS(9)