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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

April 2019 Kernel Hackers Manual 4.9.