.TH "pci_request_region" 9 "pci_request_region" "25 May 1998" "Kernel Hacker's Manual" LINUX
.SH NAME
pci_request_region \-  Reserved PCI I/O and memory resource
.SH SYNOPSIS
.B "int" pci_request_region
.BI "(struct pci_dev *" pdev ","
.BI "int " bar ","
.BI "char *" res_name ");"
.SH ARGUMENTS
.IP "pdev" 12
 PCI device whose resources are to be reserved
.IP "bar" 12
 BAR to be reserved
.IP "res_name" 12
 Name to be associated with resource.
.SH "DESCRIPTION"
Mark the PCI region associated with PCI device \fIpdev\fP BR \fIbar\fP as
being reserved by owner \fIres_name\fP.  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.