PCI_REQUEST_REGION(9)                  Hardware Interfaces                  PCI_REQUEST_REGION(9)



NAME
       pci_request_region - Reserve PCI I/O and memory resource

SYNOPSIS
       int pci_request_region(struct pci_dev * pdev, int bar, const char * res_name);

ARGUMENTS
       pdev
           PCI device whose resources are to be reserved

       bar
           BAR to be reserved

       res_name
           Name to be associated with resource

DESCRIPTION
       Mark the PCI region associated with PCI device pdev BAR 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.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                     PCI_REQUEST_REGION(9)