Provided by: kernel-doc-2.4.27_2.4.27-12_all
pci_request_region - Reserved PCI I/O and memory resource
int pci_request_region (struct pci_dev *pdev, int bar, char *res_name);
pdev PCI device whose resources are to be reserved
bar BAR to be reserved
res_name Name to be associated with resource.
Mark the PCI region associated with PCI device pdev BR bar as being
reserved by owner res_name. Do not access any address inside the PCI
regions unless this call returns successfully.
Returns 0 on success, or EBUSY on error. A warning message is also
printed on failure.